Update ChangeLog and bump version for v2.6.2 release

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

.codedocs

@@ -0,0 +1,193 @@
+# CodeDocs.xyz Configuration File
+#
+# Rename this example to '.codedocs' and put it in the root directory of your
+# repository. This file is optional, documentation will still be generated
+# without it using sensible defaults.
+
+#---------------------------------------------------------------------------
+# CodeDocs Configuration
+#---------------------------------------------------------------------------
+
+# Include the Doxygen configuration from another file.
+# The file must be a relative path with respect to the root of the repository.
+# If any of the options in this doxyfile include a path (ie, INPUT), these
+# paths will be considered relative to the root of the repository, not the
+# location of the DOXYFILE.
+
+DOXYFILE = doc/Doxyfile
+
+# Specify external repository to link documentation with.
+# This is similar to Doxygen's TAGFILES option, but will automatically link to
+# tags of other repositories already using CodeDocs. List each repository to
+# link with by giving its location in the form of owner/repository.
+# For example:
+#   TAGLINKS = doxygen/doxygen CodeDocs/osg
+# Note: these repositories must already be built on CodeDocs.
+
+TAGLINKS =
+
+#---------------------------------------------------------------------------
+# Doxygen Configuration
+#---------------------------------------------------------------------------
+
+# Doxygen configuration may also be placed in this file.
+# Currently, the following Doxygen configuration options are available. Refer
+# to http://doxygen.org/manual/config.html for detailed explanation of the
+# options. To request support for more options, contact support@codedocs.xyz.
+#
+# ABBREVIATE_BRIEF =
+# ALIASES =
+# ALLEXTERNALS =
+# ALLOW_UNICODE_NAMES =
+# ALPHABETICAL_INDEX =
+# ALWAYS_DETAILED_SEC =
+# AUTOLINK_SUPPORT =
+# BRIEF_MEMBER_DESC =
+# BUILTIN_STL_SUPPORT =
+# CALLER_GRAPH =
+# CALL_GRAPH =
+# CASE_SENSE_NAMES =
+# CITE_BIB_FILES =
+# CLASS_DIAGRAMS =
+# CLASS_GRAPH =
+# COLLABORATION_GRAPH =
+# COLS_IN_ALPHA_INDEX =
+# CPP_CLI_SUPPORT =
+# DIAFILE_DIRS =
+# DIRECTORY_GRAPH =
+# DISABLE_INDEX =
+# DISTRIBUTE_GROUP_DOC =
+# DOTFILE_DIRS =
+# DOT_FONTNAME =
+# DOT_FONTSIZE =
+# DOT_GRAPH_MAX_NODES =
+# DOT_IMAGE_FORMAT =
+# DOT_TRANSPARENT =
+# DOXYFILE_ENCODING =
+# ENABLED_SECTIONS =
+# ENABLE_PREPROCESSING =
+# ENUM_VALUES_PER_LINE =
+# EXAMPLE_PATH =
+# EXAMPLE_PATTERNS =
+# EXAMPLE_RECURSIVE =
+EXCLUDE = src/README.md
+# EXCLUDE_PATTERNS =
+# EXCLUDE_SYMBOLS =
+# EXPAND_AS_DEFINED =
+# EXPAND_ONLY_PREDEF =
+# EXTENSION_MAPPING =
+# EXTERNAL_GROUPS =
+# EXTERNAL_PAGES =
+# EXTRACT_ALL =
+# EXTRACT_ANON_NSPACES =
+# EXTRACT_LOCAL_CLASSES =
+# EXTRACT_LOCAL_METHODS =
+# EXTRACT_PACKAGE =
+# EXTRACT_PRIVATE =
+# EXTRACT_STATIC =
+# EXT_LINKS_IN_WINDOW =
+# FILE_PATTERNS =
+# FORCE_LOCAL_INCLUDES =
+# FORMULA_FONTSIZE =
+# FORMULA_TRANSPARENT =
+# FULL_PATH_NAMES =
+# GENERATE_BUGLIST =
+# GENERATE_DEPRECATEDLIST =
+# GENERATE_LEGEND =
+# GENERATE_TESTLIST =
+# GENERATE_TODOLIST =
+# GENERATE_TREEVIEW =
+# GRAPHICAL_HIERARCHY =
+# GROUP_GRAPHS =
+# GROUP_NESTED_COMPOUNDS =
+# HIDE_COMPOUND_REFERENCE= =
+# HIDE_FRIEND_COMPOUNDS =
+# HIDE_IN_BODY_DOCS =
+# HIDE_SCOPE_NAMES =
+# HIDE_UNDOC_CLASSES =
+# HIDE_UNDOC_MEMBERS =
+# HIDE_UNDOC_RELATIONS =
+# HTML_COLORSTYLE_GAMMA =
+# HTML_COLORSTYLE_HUE =
+# HTML_COLORSTYLE_SAT =
+# HTML_DYNAMIC_SECTIONS =
+# HTML_EXTRA_FILES =
+# HTML_EXTRA_STYLESHEET =
+# HTML_FOOTER =
+# HTML_HEADER =
+# HTML_INDEX_NUM_ENTRIES =
+# HTML_STYLESHEET =
+# HTML_TIMESTAMP =
+# IDL_PROPERTY_SUPPORT =
+# IGNORE_PREFIX =
+# IMAGE_PATH =
+# INCLUDED_BY_GRAPH =
+# INCLUDE_FILE_PATTERNS =
+# INCLUDE_GRAPH =
+# INCLUDE_PATH =
+# INHERIT_DOCS =
+# INLINE_GROUPED_CLASSES =
+# INLINE_INFO =
+# INLINE_INHERITED_MEMB =
+# INLINE_SIMPLE_STRUCTS =
+# INLINE_SOURCES =
+INPUT = src/ README.md doc/API.md
+# INPUT_ENCODING =
+# INTERACTIVE_SVG =
+# INTERNAL_DOCS =
+# JAVADOC_AUTOBRIEF =
+# LAYOUT_FILE =
+# MACRO_EXPANSION =
+# MARKDOWN_SUPPORT =
+# MAX_DOT_GRAPH_DEPTH =
+# MSCFILE_DIRS =
+# MULTILINE_CPP_IS_BRIEF =
+# OPTIMIZE_FOR_FORTRAN =
+# OPTIMIZE_OUTPUT_FOR_C =
+# OPTIMIZE_OUTPUT_JAVA =
+# OPTIMIZE_OUTPUT_VHDL =
+# OUTPUT_LANGUAGE =
+# PLANTUML_JAR_PATH =
+# PREDEFINED =
+# PROJECT_BRIEF =
+# PROJECT_LOGO =
+# PROJECT_NAME =
+# PROJECT_NUMBER =
+# QT_AUTOBRIEF =
+# RECURSIVE =
+# REFERENCED_BY_RELATION =
+# REFERENCES_LINK_SOURCE =
+# REFERENCES_RELATION =
+# REPEAT_BRIEF =
+# SEARCHENGINE =
+# SEARCH_INCLUDES =
+# SEPARATE_MEMBER_PAGES =
+# SHORT_NAMES =
+# SHOW_FILES =
+# SHOW_GROUPED_MEMB_INC =
+# SHOW_INCLUDE_FILES =
+# SHOW_NAMESPACES =
+# SHOW_USED_FILES =
+# SIP_SUPPORT =
+# SKIP_FUNCTION_MACROS =
+# SORT_BRIEF_DOCS =
+# SORT_BY_SCOPE_NAME =
+# SORT_GROUP_NAMES =
+# SORT_MEMBERS_CTORS_1ST =
+# SORT_MEMBER_DOCS =
+# SOURCE_BROWSER =
+# SOURCE_TOOLTIPS =
+# STRICT_PROTO_MATCHING =
+# STRIP_CODE_COMMENTS =
+# STRIP_FROM_INC_PATH =
+# STRIP_FROM_PATH =
+# SUBGROUPING =
+# TAB_SIZE =
+# TEMPLATE_RELATIONS =
+# TREEVIEW_WIDTH =
+# TYPEDEF_HIDES_STRUCT =
+# UML_LIMIT_NUM_FIELDS =
+# UML_LOOK =
+USE_MDFILE_AS_MAINPAGE = README.md
+# VERBATIM_HEADERS =
+#

.github/CONTRIBUTING.md

@@ -0,0 +1,90 @@
+Contributing to the Project
+===========================
+
+Thank you for considering contributing back to [Free Software][1]!
+
+There are a few things we would like you to consider when filing an
+issue or pull request with this project:
+
+1. If you are filing a bug report or feature request
+
+   Please take the time to check if an issue already has been filed
+   matching your problem
+
+2. What version are you running, have you tried the latest release?
+
+   UNIX distributions often package and test software for their
+   particular brand.  If you are using a pre-packaged version,
+   then please file a bug with that distribution instead.
+
+3. Coding Style
+
+   Lines are allowed to be longer than 72 characters these days, there
+   is no enforced max. length.
+
+> **Tip:** Always submit code that follows the style of surrounding code!
+
+   The coding style itself is strictly Linux [KNF][], like GIT it is
+   becoming a de facto standard for C programming
+
+   https://www.kernel.org/doc/Documentation/CodingStyle
+
+4. Logical Change Sets
+
+   Changes should be broken down into logical units that add a feature
+   or fix a bug.  Keep changes separate from each other and do not mix a
+   bug fix with a whitespace cleanup or a new feature addition.
+
+   This is important not only for readability, or for the possibility of
+   maintainers to revert changes, but does also increase your chances of
+   having a change accepted.
+
+5. Commit messages
+
+   Commit messages exist to track *why* a change was made.  Try to be as
+   clear and concise as possible in your commit messages, and always, be
+   proud of your work and set up a proper GIT identity for your commits:
+
+        git config --global user.name "J. Random Hacker"
+        git config --global user.email random.j.hacker@example.com
+
+   See this helpful guide for how to write simple, readable commit
+   messages, or have at least a look at the below example.
+
+   http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html
+
+
+Example
+-------
+
+Example commit message from the [Pro Git][gitbook] online book, notice
+how `git commit -s` is used to automatically add a `Signed-off-by`:
+
+    Capitalized, short (50 chars or less) summary
+
+    More detailed explanatory text, if necessary.  Wrap it to about 72
+    characters or so.  In some contexts, the first line is treated as the
+    subject of an email and the rest of the text as the body.  The blank
+    line separating the summary from the body is critical (unless you omit
+    the body entirely); tools like rebase can get confused if you run the
+    two together.
+
+    Write your commit message in the imperative: "Fix bug" and not "Fixed bug"
+    or "Fixes bug."  This convention matches up with commit messages generated
+    by commands like git merge and git revert.
+
+    Further paragraphs come after blank lines.
+
+    - Bullet points are okay, too
+
+    - Typically a hyphen or asterisk is used for the bullet, followed by a
+      single space, with blank lines in between, but conventions vary here
+
+    - Use a hanging indent
+
+    Signed-off-by: J. Random Hacker <random.j.hacker@example.com>
+
+
+[1]:       http://www.gnu.org/philosophy/free-sw.en.html
+[KNF]:     https://en.wikipedia.org/wiki/Kernel_Normal_Form
+[gitbook]: https://git-scm.com/book/ch5-2.html

.github/FUNDING.yml

@@ -0,0 +1,3 @@
+# These are supported funding model platforms
+
+github: [troglobit]

.github/SECURITY.md

@@ -0,0 +1,12 @@
+# Security Policy
+
+## Supported Versions
+
+libite (-lite) is a small project, as such we have no possibility to support older versions.
+The only supported version is the latest released on GitHub:
+
+<https://github.com/troglobit/libite/releases>
+
+## Reporting a Vulnerability
+
+Contact the project's main author and owner to report and discuss vulnerabilities.

.github/workflows/build.yml

@@ -0,0 +1,71 @@
+name: Bob the Builder
+
+# Run on all branches, including all pull requests, except the 'dev'
+# branch since that's where we run Coverity Scan (limited tokens/day)
+on:
+  push:
+    branches:
+      - '**'
+      - '!dev'
+  pull_request:
+    branches:
+      - '**'
+
+jobs:
+  build:
+    # Verify we can build on latest Ubuntu with both gcc and clang
+    name: ${{ matrix.compiler }}
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        compiler: [gcc, clang]
+      fail-fast: false
+    env:
+      MAKEFLAGS: -j3
+      CC: ${{ matrix.compiler }}
+    steps:
+      - name: Install dependencies
+        run: |
+          sudo apt-get -y update
+          sudo apt-get -y install tree doxygen
+      - uses: actions/checkout@v4
+      - name: Configure
+        run: |
+          ./autogen.sh
+          ./configure --prefix= --disable-silent-rules
+      - name: Build
+        run: |
+          make
+      - name: Install to ~/tmp and Inspect
+        run: |
+          DESTDIR=~/tmp make install-strip
+          tree ~/tmp
+      - name: Run Unit Tests
+        run: |
+          make check || (cat test/test-suite.log; false)
+      - name: Upload Test Results
+        uses: actions/upload-artifact@v4
+        with:
+          name: libite-test-${{ matrix.compiler }}
+          path: test/*
+  debian:
+    name: Verify Debian Package
+    runs-on: ubuntu-latest
+    container: debian:stable
+    env:
+      MAKEFLAGS: -j3
+    steps:
+      - uses: actions/checkout@v4
+      - name: Installing dependencies
+        run: |
+          apt-get update
+          apt-get install -y build-essential autoconf automake pkg-config doxygen \
+                             dpkg-dev debhelper devscripts
+      - name: Building Debian package
+        run: |
+          ./autogen.sh
+          ./configure
+          make check || (cat test/test-suite.log; false)
+          make distcheck
+          make package
+          cat ../*.changes

.github/workflows/coverity.yml

@@ -0,0 +1,80 @@
+name: Coverity Scan
+
+on:
+  push:
+    branches:
+      - 'dev'
+
+env:
+  PROJECT_NAME: libite
+  CONTACT_EMAIL: troglobit@gmail.com
+  COVERITY_NAME: troglobit-libite
+  COVERITY_PROJ: troglobit%2Flibite
+
+jobs:
+  coverity:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Fetch latest Coverity Scan MD5
+        id: var
+        env:
+          TOKEN: ${{ secrets.COVERITY_SCAN_TOKEN }}
+        run: |
+          wget -q https://scan.coverity.com/download/cxx/linux64         \
+               --post-data "token=$TOKEN&project=${COVERITY_PROJ}&md5=1" \
+               -O coverity-latest.tar.gz.md5
+          echo "md5=$(cat coverity-latest.tar.gz.md5)" | tee -a $GITHUB_OUTPUT
+      - uses: actions/cache@v4
+        id: cache
+        with:
+          path: coverity-latest.tar.gz
+          key: ${{ runner.os }}-coverity-${{ steps.var.outputs.md5 }}
+          restore-keys: |
+            ${{ runner.os }}-coverity-${{ steps.var.outputs.md5 }}
+            ${{ runner.os }}-coverity-
+            ${{ runner.os }}-coverity
+      - name: Download Coverity Scan
+        env:
+          TOKEN: ${{ secrets.COVERITY_SCAN_TOKEN }}
+        run: |
+          if [ ! -f coverity-latest.tar.gz ]; then
+            wget -q https://scan.coverity.com/download/cxx/linux64   \
+                 --post-data "token=$TOKEN&project=${COVERITY_PROJ}" \
+                 -O coverity-latest.tar.gz
+          else
+            echo "Latest Coverity Scan available from cache :-)"
+            md5sum coverity-latest.tar.gz
+          fi
+          mkdir coverity
+          tar xzf coverity-latest.tar.gz --strip 1 -C coverity
+      - name: Install dependencies
+        run: |
+          sudo apt-get -y update
+          sudo apt-get -y install pkg-config
+      - name: Configure
+        run: |
+          ./autogen.sh
+          ./configure --prefix= --disable-silent-rules
+      - name: Build
+        run: |
+          export PATH=`pwd`/coverity/bin:$PATH
+          cov-build --dir cov-int make
+      - name: Submit results to Coverity Scan
+        env:
+          TOKEN: ${{ secrets.COVERITY_SCAN_TOKEN }}
+        run: |
+          tar czvf ${PROJECT_NAME}.tgz cov-int
+          curl \
+            --form project=${COVERITY_NAME} \
+            --form token=$TOKEN \
+            --form email=${CONTACT_EMAIL} \
+            --form file=@${PROJECT_NAME}.tgz \
+            --form version=trunk \
+            --form description="${PROJECT_NAME} $(git rev-parse HEAD)" \
+            https://scan.coverity.com/builds?project=${COVERITY_PROJ}
+      - name: Upload build.log
+        uses: actions/upload-artifact@v4
+        with:
+          name: coverity-build.log
+          path: cov-int/build-log.txt

.github/workflows/release.yml

@@ -0,0 +1,37 @@
+name: Release General
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  release:
+    name: Build and upload release tarball
+    if: startsWith(github.ref, 'refs/tags/')
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Installing dependencies ...
+        run: |
+          sudo apt-get -y update
+          sudo apt-get -y install tree doxygen
+      - name: Creating Makefiles ...
+        run: |
+          ./autogen.sh
+          ./configure --prefix=
+      - name: Build release ...
+        run: |
+          make release
+          mkdir -p artifacts/
+          mv ../*.tar.* artifacts/
+      - name: Extract ChangeLog entry ...
+        run: |
+          awk '/-----*/{if (x == 1) exit; x=1;next}x' ChangeLog.md \
+              |head -n -1 > release.md
+          cat release.md
+      - uses: ncipollo/release-action@v1
+        with:
+          name: Libite (-lite) ${{ github.ref_name }}
+          bodyFile: "release.md"
+          artifacts: "artifacts/*"

.travis.yml

@@ -1,39 +0,0 @@
-# Travis CI integration -- https://travis-ci.org/troglobit/libite
-# Defaults to GNU GCC and autotools: ./configure && make && make test
-language: c
-
-# Use docker for quicker builds, it now allows https://docs.travis-ci.com/user/apt/
-sudo: false
-
-# Test build with both GCC and Clang (LLVM)
-compiler:
-  - gcc
-  - clang
-
-env:
-  global:
-   # The next declaration is the encrypted COVERITY_SCAN_TOKEN, created
-   #   via the "travis encrypt" command using the project repo's public key
-   - secure: "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"
-
-before_install:
-  - echo -n | openssl s_client -connect scan.coverity.com:443 | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' | sudo tee -a /etc/ssl/certs/ca-
-
-addons:
-  coverity_scan:
-    project:
-      name: "troglobit/libite"
-      description: "That missing frog DNA you've been looking for"
-    notification_email: troglobit@gmail.com
-    build_command_prepend: "./autogen.sh && ./configure --prefix=/tmp --disable-silent-rules"
-    build_command: "make clean all"
-    branch_pattern: dev
-
-script:
-  - ./autogen.sh
-  - ./configure --prefix=/tmp --disable-silent-rules
-  - make clean
-  - make -j5
-  - make install-strip
-  - ls -lR /tmp
-  - make check

ChangeLog.md

@@ -3,6 +3,142 @@ Change Log
 
 All notable changes to the project are documented in this file.
 
+
+[v2.6.2][] - 2025-11-22
+-----------------------
+
+### Fixes
+- Fix memory leak in `which()` on `realloc()` failure
+- Fix `pidfile()` to handle missing trailing slash in prefix path
+
+
+[v2.6.1][] - 2023-10-15
+-----------------------
+
+### Fixes
+- FTBFS uClibc and musl libc, `lite.h` missing `stdarg.h` include
+
+
+[v2.6.0][] - 2023-09-17
+-----------------------
+
+### Changes
+- New APIs from the [Infix Project](https://github.com/kernelkit/infix):
+  - `fexistf()`
+  - `vfopenf()`
+  - `popenf()`
+  - `vreadsnf()`, `readsnf()`, `writesf()`
+  - `vreadllf()`, `readllf()`, `readdf()`
+  - `writellf()`, `writedf()`
+
+### Fixes
+- Spellchecking of API docs
+
+
+[v2.5.3][] - 2023-04-08
+-----------------------
+
+### Changes
+- Refactor `copyfile()` unit test and verify number of bytes copied
+- Add missing `rsync()` unit test to ensure proper function
+
+### Fixes
+- `rsync()` does not copy single files correctly
+- `copyfile()` does not handle empty source files correctly (error)
+- `copyfile()` does not properly create destination dir
+
+
+[v2.5.2][] - 2022-04-17
+-----------------------
+
+### Changes
+- Add printf format attribute hint to all vararg functions.  This will
+  help users of these functions by telling CC what to look for
+
+### Fixes
+- Fix `fisdir()` segfault on GNU/Hurd
+- Fix `touch)` on Debian/kFreeBSD, use `creat()` instad of `mknod()`
+
+
+[v2.5.1][] - 2021-12-02
+-----------------------
+
+Debian-only fix.
+
+### Fixes
+- Use `dh_link(1)` to install `/usr/include/lite -> libite/`.  The
+  symlink created by libite installer itself is not kept.
+
+
+[v2.5.0][] - 2021-11-30
+-----------------------
+
+> **Note:** namespace change; the -lite library include files have moved
+>           from `lite/*.h` to `libite/*.h` due to an unfortunate clash
+>           with "LiTE is a Toobox Engine", from the DirectFB project.
+>           For a transitional period, however, a compatibility symlink
+>           is installed; `lite -> libite/`.
+
+### Changes
+- Header files have moved from `lite/*.h` to `libite/*.h` to prevent
+  clashing with DirectFB LiTE library.
+- Include guards in header files have been renamed, much in the same
+  fashion as the move (above), from `LITE_foo_H_` to `LIBITE_FOO_H_`
+- Add configure option to disable compatibility symlink, for systems
+  that do not want name clashes with DirectFB/LiTE, or do not need to
+  be backwards compatible; use `configure --without-symlink`
+
+### Fixes
+- Minor, use defensive coding in `strnlen()` replacement.  Only used
+  on systems that do not have a native implementation.
+
+
+[v2.4.1][] - 2021-10-09
+-----------------------
+
+### Changes
+- Add doxygen API documentation to project, included in tarball, and
+  automatically generated at https://codedocs.xyz/troglobit/libite/
+- Relocate `tests/` to `test/` in source tree
+- Relocate `docs/` to `doc/` in source tree
+
+### Fixes
+- Prefix CFLAGS/CPPFLAGS/etc with `AM_` in `test/Makefile.am` to prevent
+  clashing with environment.  Fix imported from libuEv
+- Replace obsolete `AM_CONFIG_HEADER` with `AC_CONFIG_HEADERS`
+- Fix issue with `tempfile()` returning EOPNOTSUPP on Azure, use
+  fallback to `mkostemp()` with `O_CLOEXEC` flag set
+
+
+[v2.4.0][] - 2021-03-27
+-----------------------
+
+### Changes
+
+- Add support for `touchf()`, formatted string support for `touch()`
+- Add support for `erasef()`, formatted string support for `erase()`
+- Add support for `strtrim()`, trims leading and trailing white-space
+  from a string
+
+### Fixes
+
+- Fix `systemf()` improper handling of `system()` return value.  Now
+  checks if exited OK, then returning the exit status of the command, or
+  if not exited OK, then checks if the command was signaled, and returns
+  -1 with `errno` set.  This also allows for returning 127, like
+  `system()`, if the shell, or the program itself, did not exist
+
+
+[v2.3.1][] - 2021-02-12
+-----------------------
+
+### Changes
+- Copyright updates, including LICENSE file, year + author last name
+
+### Fixes
+- Debian packaging fixes only
+
+
 [v2.3.0][] - 2021-02-12
 -----------------------
 
@@ -383,7 +519,17 @@ problems this may cause!
 Initial extraction of frog DNA from [Finit][].  See [README][] for API details.
 
 
-[UNRELEASED]: https://github.com/troglobit/libite/compare/v2.3.0...HEAD
+[UNRELEASED]: https://github.com/troglobit/libite/compare/v2.6.2...HEAD
+[v2.6.2]: https://github.com/troglobit/libite/compare/v2.6.1...v2.6.2
+[v2.6.1]: https://github.com/troglobit/libite/compare/v2.6.0...v2.6.1
+[v2.6.0]: https://github.com/troglobit/libite/compare/v2.5.3...v2.6.0
+[v2.5.3]: https://github.com/troglobit/libite/compare/v2.5.2...v2.5.3
+[v2.5.2]: https://github.com/troglobit/libite/compare/v2.5.1...v2.5.2
+[v2.5.1]: https://github.com/troglobit/libite/compare/v2.5.0...v2.5.1
+[v2.5.0]: https://github.com/troglobit/libite/compare/v2.4.1...v2.5.0
+[v2.4.1]: https://github.com/troglobit/libite/compare/v2.4.0...v2.4.1
+[v2.4.0]: https://github.com/troglobit/libite/compare/v2.3.1...v2.4.0
+[v2.3.1]: https://github.com/troglobit/libite/compare/v2.3.0...v2.3.1
 [v2.3.0]: https://github.com/troglobit/libite/compare/v2.2.1...v2.3.0
 [v2.2.1]: https://github.com/troglobit/libite/compare/v2.2.0...v2.2.1
 [v2.2.0]: https://github.com/troglobit/libite/compare/v2.1.2...v2.2.0

LICENSE

@@ -1,5 +1,5 @@
 Copyright (c) 2008-2010  Claudio Matsuoka <cmatsuoka@gmail.com>
-Copyright (c) 2008-2020  Joachim Nilsson <troglobit@gmail.com>
+Copyright (c) 2008-2023  Joachim Wiberg <troglobit@gmail.com>
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

Makefile.am

@@ -1,14 +1,24 @@
 ACLOCAL_AMFLAGS     = -I m4
-
+SUBDIRS             = src test
 doc_DATA            = README.md LICENSE ChangeLog.md
 EXTRA_DIST          = README.md LICENSE ChangeLog.md
-pkgconfigdir        = $(libdir)/pkgconfig
+
-pkgconfig_DATA      = libite.pc
+if ENABLE_DOXYGEN
-SUBDIRS             = src tests
+SUBDIRS            += doc
+.PHONY: doc
+doc:
+	$(MAKE) -C @top_builddir@/doc $@
+
+## The distribution should include man pages, which are generated
+dist-hook: doc
+else
+doc:
+	@echo "Doxygen documentation (html + man) disabled, skipping ..."
+endif
 
 ## Check if tagged in git
 release-hook:
-	@if [ ! `git tag | grep $(PACKAGE_VERSION)` ]; then				\
+	@if [ ! `git tag -l v$(PACKAGE_VERSION) | grep $(PACKAGE_VERSION)` ]; then	\
 		echo;									\
 		printf "\e[1m\e[41mCannot find release tag $(PACKAGE_VERSION)\e[0m\n";	\
 		printf "\e[1m\e[5mDo release anyway?\e[0m "; read yorn;			\
@@ -24,15 +34,15 @@ release-hook:
 		echo;									\
 	fi
 
-# lintian --profile debian -i -I --show-overrides ../$PKG.changes
+## Generate .deb package
-package build-deb:
+package:
-	@dpkg-buildpackage -uc -us -B
+	@debuild -uc -us -B --lintian-opts --profile debian -i -I --show-overrides
 
 ## Target to run when building a release
-release: release-hook distcheck package
+release: release-hook distcheck
-	@for file in $(DIST_ARCHIVES); do		\
+	@for file in $(DIST_ARCHIVES); do						\
-		md5sum    $$file > ../$$file.md5;	\
+		md5sum    $$file > ../$$file.md5;					\
-		sha256sum $$file > ../$$file.sha256;	\
+		sha256sum $$file > ../$$file.sha256;					\
 	done
 	@mv $(DIST_ARCHIVES) ../
 	@echo

README.md

@@ -1,16 +1,19 @@
 -lite | Frog DNA, basically
 ===========================
-[![Travis Status][]][Travis] [![Coverity Status]][Coverity Scan]
+[![GitHub Status][]][GitHub] [![codedocs status][]][codedocs] [![Coverity Status][]][Coverity Scan]
 
 Table of Contents
 -----------------
 
 * [Introduction](#introduction)
 * [Using -lite](#using--lite)
-* [Helper Macros](#helper-macros)
+* [API](doc/API.md#overview)
-* [Generic Functions](#generic-functions)
+  * [Important Node](doc/API.md#important-note)
-* [OpenBSD Functions](#openbsd-functions)
+  * [Helper Macros](doc/API.md#helper-macros)
-* [Build & Install](#origin--references)
+  * [Generic Functions](doc/API.md#generic-functions)
+  * [GNU Functions](doc/API.md#gnu-functions)
+  * [OpenBSD/NetBSD/FreeBSD Functions](doc/API.md#openbsd-netbsd-freebsd-functions)
+* [Build & Install](#build--install)
 * [Origin & References](#origin--references)
 
 
@@ -33,398 +36,65 @@ recommended when traversing lists to delete/free nodes.
 The code is open sourced under a mix of permissive Open Source licenses:
 [MIT/X11 license][MIT], [ISC license][ISC], and [BSD licenses][BSD].
 
+> **Tip:** have a look at my blog post about other useful UNIX API's!
+>          https://troglobit.com/post/2020-02-22-useful-unix-apis/
+
 
 Using -lite
 -----------
 
 Libite is by default installed as a library and a set of include files.
 To prevent clashing with include files of the same name `-lite` employs
-an include file namespace `lite/`, which is strongly recommended to use
+an include file namespace `libite/`, which is strongly recommended to
-in your applications:
+use in your applications:
 
-    #include <lite/lite.h>
+```C
-    #include <lite/conio.h>
+#include <libite/lite.h>
-    #include <lite/queue.h>
+#include <libite/conio.h>
-    #include <lite/tree.h>
+#include <libite/queue.h>
+#include <libite/tree.h>
+```
 
-The output from the `pkg-config` tool holds no surprises in this regard:
+> **Note:** prior to v2.5.0, the `lite/` namespace was used for headers,
+> which is still available in the default install.  This clashed with
+> the headers of the LiTE library from the DirectFB project.
 
-    $ pkg-config --libs --static --cflags libite
+The output from the `pkg-config` tool holds no surprises:
-    -I/usr/local/include -L/usr/local/lib -lite
+
+```bash
+$ pkg-config --libs --static --cflags libite
+-I/usr/local/include -D_LIBITE_LITE -L/usr/local/lib -lite
+```
+
+> **Note:** `_LIBITE_LITE` is defined since v2.5.0, useful for software
+> that want to be able to build against headers from an older libite:
+>
+> ```C
+> #ifdef _LIBITE_LITE
+> # include <libite/lite.h>
+> #else
+> # include <lite/lite.h>
+> #endif
+> ```
 
 The prefix path `/usr/local/` shown here is only the default.  Use the
 `configure` script to select a different prefix when installing libite.
 
 For GNU autotools based projects, use the following in `configure.ac`:
 
-    # Check for required libraries
+```m4
-    PKG_CHECK_MODULES([lite], [libite >= 1.5.0])
+# Check for required libraries
+PKG_CHECK_MODULES([lite], [libite >= 1.5.0])
+```
 
 and in your `Makefile.am`:
 
-    proggy_CFLAGS = $(lite_CFLAGS)
+```Makefile
-    proggy_LDADD  = $(lite_LIBS)
+proggy_CFLAGS = $(lite_CFLAGS)
+proggy_LDADD  = $(lite_LIBS)
+```
 
-
+> API Documentaion: https://codedocs.xyz/troglobit/libite/
-Important Note
---------------
-
-When using functions like `mkpath()`, `makepath()`, and `makefifo()`,
-make sure your `umask()` is correct so you do not accidentally create
-files and directories accessible to other users than intended.
-
-
-Helper Macros
--------------
-
-- `atonum(str)`
-
-  Convert string to natural number, works for 32-bit non-negative
-  integers.  Returns -1 on error.  (Uses `strtonum()` internally.)
-
-- `blkdev(dev)`
-
-  Create block device
-
-- `chardev(dev)`
-
-  Create character device
-
-- `erase(path)`
-
-  Erase file/directory with `remove()`.  Errors on `stderr`
-
-- `makedir(path)`
-
-  Create directory, like `mkdir()`.  Errors on `stderr`
-
-- `makefifo(path)`
-
-  Create a FIFO, like `mkfifo()`.  Errors on `stderr`
-
-- `min(a,b)`/`max(a,b)`
-
-  These macros take care to avoid double evaluation.
-
-- `touch(path)`
-
-  Create a file, or update mtime.  Errors on `stderr`
-
-- `S_ISEXEC(mode_t m)`
-
-  Mysteriously missing from GLIBC
-
-- `ISCLR(word,bit)`
-
-  Is bit in (integer) word cleared?
-
-- `ISSET(word,bit)`
-
-  Is bit in (integer) word set?
-
-- `ISOTHER(word,bit)`
-
-  Are any other bits, except bit, in (integer) word set?
-
-- `SETBIT(word,bit)`
-
-  Set bit in (integer) word.
-
-- `CLRBIT(word,bit)`
-
-  Clear bit in (integer) word.
-
-- `NELEMS(array)`
-
-  Returns the number of elements in an array.  From the great book, The
-  Practice of Programming, by Kernighan and Pike.
-
-
-Generic Functions
------------------
-
-- `chomp(str)`
-
-  Perl like chomp function, chop off last char if newline.
-
-- `copyfile(src, dst, len, opt)`
-
-  Like the shell `cp(1)` and `dd(1),`, can also copy symlinks and
-  preserve the mtime of the source file.  The opt argument can be
-  a mask of:
-  
-  - `LITE_FOPT_COPYFILE_SYM (0x01)`
-  - `LITE_FOPT_KEEP_MTIME   (0x02)`
-  
-  In releases prior to v2.0 the opt argument was called `symlink`.
-  The APIs are 100% compatible if the value `1` was used to enable
-  the symlink option.
-
-- `dir(dir, ext, filter, list, strip)`
-
-  Wrapper for `scandir()` with optional filter.  Returns a list of
-  names: files and directories that must be freed after use.  See
-  the unit test for an example, or take a look at `glob(3)`, it's
-  probably what you want anyway.
-
-- `fcopyfile(src, dst)`
-
-  Like `copyfile()` but uses already open `FILE *` pointers.  Copies
-  from current file positions to current file positions until EOF.
-
-- `fexist(file)`
-
-  Check for the existence of a file, returns True(1) or False(0).
-
-- `fisdir(path)`
-
-  Check for the existence of a directory, returns True(1) or False(0).
-
-- `fopenf(mode, fmt, ...)`
-
-  Like `fopen()`, but takes a formatted string as argument.  This
-  greatly simplifies operations that usually consist of composing a
-  filename from parts into a dynamic buffer before actually opening
-  the file.
-  
-  > **Notice:** the swapped order of `pathname` and `mode`!
-
-- `fremove(fmt, ...)`
-
-  Like `remove()`, but takes a formatted string as argument.  This
-  greatly simplifies operations that usually consist of composing a
-  filename from parts into a dynamic buffer before actually removing
-  the file.
-
-- `fsendfile(src, dst, len)`
-
-  Copy data between file streams, very similar to `fcopyfile()`, but
-  `dst` is allowed to be `NULL` to be able to read and discard `len`
-  bytes from `src`.
-
-- `ifconfig(ifname, addr, mask, up)`
-
-  Basic ifconfig like operations on an interface.  Only supports IPv4
-  addresses.  Note that mask is not CIDR notation.
-
-- `lfopen(file, sep)`, `lfclose(lf)`
-
-  LITE file API for parsing UNIX style configuration files like
-  `/etc/protocols` and `/etc/services`.
-
-- `lftok(lf)`
-
-  Read tokens, delimited by `sep`, from file opened with `lfopen()`.
-
-- `lfgetkey(lf, key)`
-
-  Find `key` in file opened with `lfopen()`, return value/argument.
-
-- `lfgetint(lf, key)`
-
-  Wrapper for `lfgetkey()`, returns positive integer value to `key`,
-  or `-1` if `key` is not found.
-
-- `fgetint(file, sep, key)`
-
-  Wrapper for `lfopen()`, `lfgetint()`, and `lfclose()`.  Useful for
-  when only reading a single `key` from a file.
-
-- `makepath(dir)`
-
-  Create all components of the specified directory.
-
-- `mkpath(dir, mode)`
-
-  Like `makepath()`, but also takes a `mode_t` permission mode argument.
-
-- `fmkpath(mode, fmt, ...)`
-
-  Like `mkpath()`, but takes a formatted string as argument.
-
-  > **Notice:** the swapped order of `pathname` and `mode`!
-
-- `movefile(src, dst)`
-
-  Like `copyfile()`, but renames `src` to `dst`, or recreates symlink
-  with the `dst` name.  On successful operation the source is removed
-  and the function returns POSIX OK (0).
-
-- `pidfile(name)`
-
-  Create a daemon PID file using either the `name` as a full path, if
-  `name` starts with `/`, or in `_PATH_VARRUN` using `name` as the
-  basename of the application.  If `name` is `NULL`, then `__progname`
-  is used as the basename.  The resulting file name is available to the
-  user as a read-only pointer:
-
-        extern char *__pidfile_name;
-
-  Use this function to create a PID file for your daemon when it is
-  ready to receive signals.  A client application may poll for the
-  existence of this file, so make sure to have your signal handlers
-  properly setup before calling this function.
-
-  The PID file is removed when the program exits, using an `atexit()`
-  handler.  However, depending on how the program terminates the file
-  may still exist even though the program is no longer running.
-
-  Calling this function multiple times updates the mtime of the file.
-  Only one `atexit()` handler is created, regardless of the amount of
-  times the function is called.  If the file is removed, subsequent
-  calls to this function will recreate the file.
-  
-  See below for a link to OpenBSD man page.
-
-- `pidfile_read(pidfile)`
-
-  Read PID from pid file created by `pidfile()`.
-
-- `pidfile_signal(pidfile, signal)`
-
-  Send signal to PID found in pid file created by `pidfile()`.
-
-- `progress(percent, max_width)`
-
-  Simple ASCII progress bar with a spinner.  Start it with `percent=0`
-  and set the `max_width=chars` to indicate width of the progress bar.
-  Called multiple times with the same percentage value cause spinner to
-  spin.
-
-- `rsync(src, dst, opt, *filter())`
-
-  Very simple `rsync()` to copy files and directories recursively.  It
-  supports pruning files from the destination tree that do not exist in
-  the source tree and preserving the mtime of the source files.  The opt
-  argument can be a mask of:
-  
-  - `LITE_FOPT_RSYNC_DELETE (0x01)`
-  - `LITE_FOPT_KEEP_MTIME   (0x02)`
-  
-  In releases prior to v2.0 the argument controlling pruning was called
-  `delete`, it is now called `opt`.  The APIs are 100% compatible if the
-  value `1` was used.
-
-- `strmatch(str, list)`, `strnmatch(str, list, len)`
-
-  Find matching string in an array of strings.  Returns index in array on
-  match, or `-1` on error or not found.  `strnmatch()` takes an extra arg
-  to compare only `len` number of characters from `str`.
-
-- `systemf(fmt, ...)`
-
-  Like `system()`, but takes a formatted string as argument.  This
-  greatly simplifies operations that usually consist of composing a
-  command from parts into a dynamic buffer before calling it.
-
-- `telnet_open(addr, port), telnet_close(ctx), telnet_expect(ctx, script, output)`
-
-  Poor mans telnet expect in C.  Opens connection to a Telnet service;
-  FTP, Telnet, similar, and run an expect-like script.
-
-- `telnet_session(addr, port, script output)`
-
-  Wrapper for the above three in one API.
-
-- `tempfile()`
-
-  Secure replacement for `tmpfile()`.  Creates an invisible temporary
-  file in `/tmp` that is removed when the returned `FILE` pointer is
-  closed.
-  
-  **Note:** Requires Linux v3.11, or later, will fall back to the old
-    and unsafe `tmpfile()` on older systems.
-
-- `truncatef(length, fmt, ...)`
-
-  Like `truncate()`, but takes a formatted string as argument.  This
-  simplifies some operations when the filename otherwise have to be
-  composed from parts into a separate array before calling the real
-  function.
-
-- `which(cmd)`, `whichp(cmd)`
-
-  C implementation of UNIX which(1).  Returns a malloc'ed string with the
-  full path to `cmd` on success, otherwise `NULL`.
-  
-  `whichp()` is a predicate function, returns `TRUE` or `FALSE`.
-
-  **Note:** `which("/bin/ps aux")` will return `/bin/ps`, or `TRUE`,
-  provided of course `/bin/ps` exists.
-
-- `yorn(fmt, ...)`
-
-  Pose a question to user, appended with `(y/N)?`, returns `TRUE` for
-  yes (both `y` and `Y` are handled) and `FALSE` for everything else.
-
-
-GNU Functions
--------------
-
-The following are useful GNU functions, that do not exist on *BSD, and
-some other platforms.
-
-- `strdupa(str)`
-
-  http://man7.org/linux/man-pages/man3/strdupa.3.html
-
-- `strndupa(str)`
-
-  http://man7.org/linux/man-pages/man3/strndupa.3.html
-
-- `strnlen(str, lim)`
-
-  http://man7.org/linux/man-pages/man3/strnlen.3.html
-
-
-OpenBSD/NetBSD/FreeBSD Functions
---------------------------------
-
-The following are popular functions and highly useful macros from the
-*BSD world of UNIX that are sadly missing on Linux.
-
-- `fparseln(fp, *len, *lineno, delim, flags)`
-
-  http://man.openbsd.org/OpenBSD-current/man3/fparseln.3
-
-- `pidfile(basename)`
-
-  http://www.openbsd.org/cgi-bin/man.cgi/OpenBSD-current/man3/pidfile.3
-
-  **Note:** the version of `pidfile()` in -lite has been extended to
-  handle it being called multiple times, i.e. to not create multiple
-  `atexit()` handlers, and also to export a few internal paths:
-
-	- `__pidfile_path`: prefix path, default `_PATH_VARRUN`.  Notice the
-	  trailing slash requirement if you want to override it!
-	- `__pidfile_name`: full path to PID file , similar to `__progname`.
-	  See previous section for details.
-
-- `reallocarray(ptr, nmemb, size)`
-
-  http://man.openbsd.org/OpenBSD-current/man3/reallocarray.3
-
-- `strlcpy(dst, src, len)`
-
-  http://www.openbsd.org/cgi-bin/man.cgi/OpenBSD-current/man3/strlcpy.3
-
-- `strlcat(dst, src, len)`
-
-  http://www.openbsd.org/cgi-bin/man.cgi/OpenBSD-current/man3/strlcat.3
-
-- `strtonum()`
-
-  http://www.openbsd.org/cgi-bin/man.cgi/OpenBSD-current/man3/strtonum.3
-
-- `sys/queue.h` API
-
-  http://www.openbsd.org/cgi-bin/man.cgi/OpenBSD-current/man3/LIST_EMPTY.3
-
-- `sys/tree.h` API
-
-  Niels Provos' famous splay and red-black tree implementation.
-
-  http://www.openbsd.org/cgi-bin/man.cgi/OpenBSD-current/man3/SPLAY_FOREACH.3
 
 
 Build & Install
@@ -433,37 +103,47 @@ Build & Install
 This library was initially built for and developed on GNU/Linux systems
 as a light weight utility library, these days NetBSD should also work.
 
-    ./configure
+```bash
-    make -j5
+$ ./configure
-    sudo make install-strip
+$ make -j5
-    sudo ldconfig
+$ sudo make install-strip
+$ sudo ldconfig
+```
+
+Use <kbd>./configure --without-symlink</kbd> to prevent the install step
+from creating the `lite -> libite/` compatibility symlink for the header
+files, required for systems with DirectFB LiTE.  The default, however,
+is to install the symlink to ensure compatibility with existing software
+that depends on the `-lite` library headers in their previous namespace.
 
 **Note:** When checking out code from GIT, use <kbd>./autogen.sh</kbd>
 to generate a `configure` script.  It is a generated file and otherwise
 only included in released tarballs.
 
+
 Origin & References
 -------------------
 
 Much of the code in libite (-lite) is written by [Claudio Matsuoka][]
-for [Finit][original finit] and released under the MIT/X11 license.
+for the original [Finit][original finit] and released under the MIT/X11
-Joachim Nilsson later improved on the [Finit][] code base and included
+license.  Joachim Wiberg later improved on the [Finit][1] code base and
-pieces of software released under the ISC and BSD licenses.  See each
+included pieces of software released under the ISC and BSD licenses.
-respective file for license details.
+See each respective file for license details.
 
-[1]: https://github.com/troglobit/finit
+[1]:                https://github.com/troglobit/finit
-[2]: http://www.openbsd.org/
+[2]:                http://www.openbsd.org/
-[3]: http://www.openbsd.org/cgi-bin/man.cgi?query=strlcpy
+[3]:                http://www.openbsd.org/cgi-bin/man.cgi?query=strlcpy
-[4]: http://www.openbsd.org/cgi-bin/man.cgi/OpenBSD-current/man3/LIST_EMPTY.3
+[4]:                http://www.openbsd.org/cgi-bin/man.cgi/OpenBSD-current/man3/LIST_EMPTY.3
-[5]: https://developer.gnome.org/glib/
+[5]:                https://developer.gnome.org/glib/
-[7]: http://www.openbsd.org/cgi-bin/man.cgi/OpenBSD-current/man3/SPLAY_FOREACH.3
+[7]:                http://www.openbsd.org/cgi-bin/man.cgi/OpenBSD-current/man3/SPLAY_FOREACH.3
-[MIT]: https://en.wikipedia.org/wiki/MIT_License
+[MIT]:              https://en.wikipedia.org/wiki/MIT_License
-[ISC]: https://en.wikipedia.org/wiki/ISC_license
+[ISC]:              https://en.wikipedia.org/wiki/ISC_license
-[BSD]: https://en.wikipedia.org/wiki/BSD_licenses
+[BSD]:              https://en.wikipedia.org/wiki/BSD_licenses
-[Travis]: https://travis-ci.org/troglobit/libite
+[GitHub]:           https://github.com/troglobit/libite/actions/workflows/build.yml/
-[Travis Status]: https://travis-ci.org/troglobit/libite.png?branch=master
+[GitHub Status]:    https://github.com/troglobit/libite/actions/workflows/build.yml/badge.svg
 [Coverity Scan]:    https://scan.coverity.com/projects/20602
 [Coverity Status]:  https://img.shields.io/coverity/scan/20602.svg
+[codedocs]:         https://codedocs.xyz/troglobit/libite.log
+[codedocs status]:  https://codedocs.xyz/troglobit/libite.svg
 [Claudio Matsuoka]: https://github.com/cmatsuoka
-[original finit]: http://helllabs.org/finit/
+[original finit]:   http://helllabs.org/finit/
-[Finit]: https://github.com/troglobit/finit

TODO.org

@@ -0,0 +1,15 @@
+* TODO Write tests for new APIs
+
+* More formatted variants?
+- symlinkf()
+- accessf()
+- statf() / lstatf()
+
+* Relocate from Finit
+
+- fnread()
+- fnwrite()
+- fngetint()
+- paste()
+- unquote()
+

configure.ac

@@ -1,11 +1,11 @@
-AC_INIT(libite, 2.3.0, https://github.com/troglobit/libite/issues)
+AC_INIT(libite, 2.6.2, https://github.com/troglobit/libite/issues)
 AC_CONFIG_AUX_DIR(aux)
 AM_INIT_AUTOMAKE([1.11 foreign dist-xz])
 AM_SILENT_RULES([yes])
 
 AC_CONFIG_SRCDIR(src/lite.h)
-AM_CONFIG_HEADER(config.h)
+AC_CONFIG_HEADERS(config.h)
-AC_CONFIG_FILES([Makefile src/Makefile tests/Makefile libite.pc])
+AC_CONFIG_FILES([Makefile doc/Makefile doc/Doxyfile src/Makefile src/libite.pc test/Makefile])
 AC_CONFIG_MACRO_DIR([m4])
 
 AC_PROG_CC
@@ -13,4 +13,27 @@ AC_PROG_INSTALL
 m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
 LT_INIT
 
+# Check for Doxygen and enable its features.
+# For details, see m4/ax_prog_doxygen.m4 and
+# http://www.bioinf.uni-freiburg.de/~mmann/HowTo/automake.html#doxygenSupport
+DX_DOXYGEN_FEATURE(ON)
+DX_DOT_FEATURE(OFF)
+DX_CHI_FEATURE(OFF)
+DX_RTF_FEATURE(OFF)
+DX_XML_FEATURE(OFF)
+DX_PDF_FEATURE(OFF)
+DX_PS_FEATURE(OFF)
+DX_CHM_FEATURE(OFF)
+DX_HTML_FEATURE(ON)
+DX_MAN_FEATURE(OFF)
+DX_INIT_DOXYGEN(${PACKAGE_NAME}, [${top_builddir}/doc/Doxyfile], [${top_builddir}/doc])
+
+AC_ARG_WITH([symlink],
+        AS_HELP_STRING([--without-symlink], [Disable compat /usr/include/lite -> libite symlink]),,
+	[with_symlink=yes])
+
+AM_CONDITIONAL([ENABLE_DOXYGEN], [test "x${DX_FLAG_doc}"  = x1])
+AM_CONDITIONAL([ENABLE_HTML],    [test "x${DX_FLAG_html}" = x1])
+AM_CONDITIONAL([COMPAT_SYMLINK], [test "x$with_symlink"  != "xno"])
+
 AC_OUTPUT

debian/changelog

@@ -1,3 +1,70 @@
+libite (2.6.0) stable; urgency=medium
+
+  * New APIs from Infix Project:
+    - fexistf()
+    - vfopenf()
+    - popenf()
+    - vreadsnf(), readsnf(), writesf()
+    - vreadllf(), readllf(), readdf()
+    - writellf(), writedf()
+  * Spellchecking of API docs
+
+ -- Joachim Wiberg <troglobit@gmail.com>  Sun, 17 Sep 2023 12:16:47 +0200
+
+libite (2.5.3) stable; urgency=medium
+
+ * rsync() does not copy single files correctly
+ * copyfile() does not handle empty source files correctly (error)
+ * copyfile() does not properly create destination dir
+ * Add printf format attribute hint to all vararg functions
+ * Fix fisdir() segfault on GNU/Hurd
+ * Fix touch() on Debian/kFreeBSD, use creat() instad of mknod()
+
+ -- Joachim Wiberg <troglobit@gmail.com>  Sat, 08 Apr 2023 07:04:00 +0200
+    
+libite (2.5.1) stable; urgency=medium
+
+  * Use dh_link(1) to install `/usr/include/lite -> libite/`.
+
+ -- Joachim Wiberg <troglobit@gmail.com>  Thu, 02 Dec 2021 00:08:41 +0100
+
+libite (2.5.0) stable; urgency=medium
+
+  * Header files have moved from `lite/*.h` to `libite/*.h` to prevent
+    clashing with DirectFB LiTE library.  For a transitional period,
+    however, a compatibility symlink is installed; `lite -> libite/`.
+
+ -- Joachim Wiberg <troglobit@gmail.com>  Tue, 30 Nov 2021 06:57:17 +0100
+
+libite (2.4.1) stable; urgency=medium
+
+  * Add doxygen documentation, https://codedocs.xyz/troglobit/libite/
+  * Fix issue with tempfile() returning EOPNOTSUP on certain file systems,
+    added fallback that uses mkstemp() with O_CLOEXEC flag set
+
+ -- Joachim Wiberg <troglobit@gmail.com>  Sat, 09 Oct 2021 08:56:43 +0200
+
+libite (2.4.0) stable; urgency=medium
+
+  * New functions:
+    - touchf(), formatted string support for touch()
+    - erasef(), formatted string support for erase()
+    - strtrim(), trims leading and trailing white-space from a string
+  * Fix systemf() improper handling of system() return value.  Now checks
+    if exited OK, then returning the exit status of the command, or if not
+    exited OK, then checks if the command was signaled, and returns -1 with
+    errno set.  This also allows for returning 127, like system(), if the
+    shell, or the program itself, did not exist.
+
+ -- Joachim Wiberg <troglobit@gmail.com>  Sat, 27 Mar 2021 09:12:32 +0100
+
+libite (2.3.1) stable; urgency=medium
+
+  * Minor packaging fixes.
+  * Copyright updates, including LICENSE file, year + author last name
+
+ -- Joachim Wiberg <troglobit@gmail.com>  Fri, 12 Feb 2021 15:10:42 +0100
+
 libite (2.3.0) stable; urgency=medium
 
   * New functions:

debian/control

@@ -1,12 +1,13 @@
 Source: libite
-Priority: optional
-Maintainer: Joachim Nilsson <troglobit@gmail.com>
-Build-Depends: debhelper (>= 10), libtool
-Standards-Version: 4.3.0
 Section: libs
+Priority: optional
+Maintainer: Joachim Wiberg <troglobit@gmail.com>
+Build-Depends: debhelper (>= 10)
+Build-Depends-Indep: doxygen
+Standards-Version: 4.3.0
 Homepage: https://github.com/troglobit/libite/
-Vcs-Git: https://github.com/troglobit/libite.git
 Vcs-Browser: https://github.com/troglobit/libite/
+Vcs-Git: https://github.com/troglobit/libite.git
 
 Package: libite-dev
 Priority: optional

debian/copyright

@@ -4,7 +4,7 @@ Source: https.//github.com/troglobit/libite/
 Files: *
 Copyright:
 2008-2010 Claudio Matsuoka <cmatsuoka@gmail.com>
-2008-2020 Joachim Nilsson <troglobit@gmail.com>
+2008-2021 Joachim Wiberg <troglobit@gmail.com>
 License: MIT
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -25,25 +25,49 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 
 Files: chomp.c
-Copyright: 2014-2020 Joachim Nilsson <troglobit@gmail.com>
+Copyright: 2014-2021 Joachim Wiberg <troglobit@gmail.com>
 License: ISC
 
-Files: conio.h
+Files: conio.?
-Copyright: 2009-2020 Joachim Nilsson <troglobit@gmail.com>
+Copyright: 2009-2021 Joachim Wiberg <troglobit@gmail.com>
 License: ISC
 
 Files: dir.c
-Copyright: 2008-2020 Joachim Nilsson <troglobit@gmail.com>
+Copyright: 2008-2021 Joachim Wiberg <troglobit@gmail.com>
 License: ISC
 
+Files: fopenf.c fremove.c systemf.c truncatef.c
+Copyright: 2021 Joachim Wiberg <troglobit@gmail.com>
+License: ISC
+
+Files: fparseln.c
+Copyright: 1997 Christos Zoulas
+License: BSD-2-clause
+
+Files: fsendfile.c
+Copyright: 2013 Tobias Waldekranz <tobias@waldekranz.com>
+License: MIT
+
 Files: lfile.c
-Copyright: 2015-2020 Joachim Nilsson <troglobit@gmail.com>
+Copyright: 2015-2021 Joachim Wiberg <troglobit@gmail.com>
+License: ISC
+
+Files: makepath.c
+Copyright: 2016-2021 Joachim Wiberg <troglobit@gmail.com>
 License: ISC
 
 Files: pidfile.c
 Copyright: 1999 The NetBSD Foundation, Inc.
 License: BSD-2-clause
 
+Files: pidfilefn.c
+Copyright: 2009-2021 Joachim Wiberg <troglobit@gmail.com>
+License: ISC
+
+Files: progress.c
+Copyright: 2012-2021 Joachim Wiberg <troglobit@gmail.com>
+License: ISC
+
 Files: queue.h
 Copyright: 1991, 1993 The Regents of the University of California.
 License: BSD-3-clause
@@ -53,7 +77,7 @@ Copyright: 2008 Otto Moerbeek <otto@drijf.net>
 License: ISC
 
 Files: rsync.c
-Copyright: 2011-2020 Joachim Nilsson <troglobit@gmail.com>
+Copyright: 2011-2021 Joachim Wiberg <troglobit@gmail.com>
 License: ISC
 
 Files: strdupa.h strndupa.h
@@ -64,12 +88,16 @@ Files: strlcat.c strlcpy.c
 Copyright: 1998, 2015 Todd C. Miller <Todd.Miller@courtesan.com>
 License: MIT
 
+Files: strlite.h
+Copyright: 2008-2021 Joachim Wiberg <troglobit@gmail.com>
+License: MIT
+
 Files: strmatch.c
-Copyright: 2009-2020 Joachim Nilsson <troglobit@gmail.com>
+Copyright: 2009-2021 Joachim Wiberg <troglobit@gmail.com>
 License: ISC
 
 Files: strnlen.c
-Copyright: 2016-2020 Joachim Nilsson <troglobit@gmail.com>
+Copyright: 2016-2021 Joachim Wiberg <troglobit@gmail.com>
 License: ISC
 
 Files: strtonum.c
@@ -77,20 +105,24 @@ Copyright: 2004 Ted Unangst and Todd Miller
 License: ISC
 
 Files: telnet.c
-Copyright: 2010-2020 Joachim Nilsson <troglobit@gmail.com>
+Copyright: 2010-2021 Joachim Wiberg <troglobit@gmail.com>
 License: ISC
 
 Files: tempfile.c
-Copyright: 2015-2020 Joachim Nilsson <troglobit@gmail.com>
+Copyright: 2015-2021 Joachim Wiberg <troglobit@gmail.com>
 License: ISC
 
 Files: tree.h
 Copyright: 2002 Niels Provos <provos@citi.umich.edu>
 License: BSD-2-clause
 
-Files: yorn.c
+Files: which.c
-Copyright: 2009-2020 Joachim Nilsson <troglobit@gmail.com>
+Copyright: 2017-2021 Joachim Wiberg <troglobit@gmail.com>
 License: ISC
 
-Files: tests/*.c
+Files: yorn.c
+Copyright: 2009-2021 Joachim Wiberg <troglobit@gmail.com>
+License: ISC
+
+Files: test/*.c
 License: public-domain

debian/libite-dev.install

@@ -1,4 +1,4 @@
-usr/include/lite/*.h
+usr/include/libite/*.h
 usr/lib/*/lib*.a
 usr/lib/*/lib*.so
 usr/lib/*/pkgconfig/lib*.pc

debian/libite-dev.links

@@ -0,0 +1 @@
+/usr/include/libite	/usr/include/lite

debian/libite5.symbols

@@ -5,6 +5,7 @@ libite.so.5 libite5 #MINVER#
  chomp@Base 2.0.0
  copyfile@Base 2.0.0
  dir@Base 2.0.0
+ erasef@Base 2.4.0
  fcopyfile@Base 2.0.0
  fexist@Base 2.0.0
  fgetint@Base 2.0.0
@@ -32,18 +33,19 @@ libite.so.5 libite5 #MINVER#
  progress_simple@Base 2.0.0
  reallocarray@Base 2.0.0
  rsync@Base 2.0.0
- sdbuf@Base 2.0.0
  strlcat@Base 2.0.0
  strlcpy@Base 2.0.0
  strmatch@Base 2.1.0
  strnmatch@Base 2.1.0
  strtonum@Base 2.1.0
+ strtrim@Base 2.4.0
  systemf@Base 2.2.0
  telnet_close@Base 2.1.0
  telnet_expect@Base 2.1.0
  telnet_open@Base 2.1.0
  telnet_session@Base 2.1.0
  tempfile@Base 2.0.0
+ touchf@Base 2.4.0
  truncatef@Base 2.3.0
  which@Base 2.0.0
  whichp@Base 2.0.0

debian/rules

@@ -6,6 +6,9 @@ export DEB_BUILD_MAINT_OPTIONS = hardening=+all
 %:
 	dh $@ --with autoreconf
 
+override_dh_auto_configure:
+	dh_auto_configure -- --without-symlink
+
 override_dh_installchangelogs:
 	dh_installchangelogs ChangeLog.md
 

doc/.gitignore

@@ -0,0 +1,3 @@
+html/*
+libite.tag
+Doxyfile

doc/API.md

@@ -0,0 +1,459 @@
+API Documentation
+=================
+
+
+Important Note
+--------------
+
+When using functions like `mkpath()`, `makepath()`, and `makefifo()`,
+make sure your `umask()` is correct so you do not accidentally create
+files and directories accessible to other users than intended.
+
+
+Helper Macros
+-------------
+
+- `atonum(str)`
+
+  Convert string to natural number, works for 32-bit non-negative
+  integers.  Returns -1 on error.  (Uses `strtonum()` internally.)
+
+- `blkdev(dev)`
+
+  Create block device
+
+- `chardev(dev)`
+
+  Create character device
+
+- `erase(path)`
+
+  Erase file/directory with `remove()`.  Errors on `stderr`
+
+- `erasef(fmt, ...)`
+
+  Like `erase()` but takes a formatted printf-like string as argument.
+
+- `makedir(path)`
+
+  Create directory, like `mkdir()`.  Errors on `stderr`
+
+- `makefifo(path)`
+
+  Create a FIFO, like `mkfifo()`.  Errors on `stderr`
+
+- `min(a,b)`/`max(a,b)`
+
+  These macros take care to avoid double evaluation.
+
+- `touch(path)`
+
+  Create a file, or update mtime.  Errors on `stderr`
+
+- `touchf(fmt, ...)`
+
+  Like `touch()` but takes a formatted printf-like string as argument.
+
+- `S_ISEXEC(mode_t m)`
+
+  Mysteriously missing from GLIBC
+
+- `ISCLR(word,bit)`
+
+  Is bit in (integer) word cleared?
+
+- `ISSET(word,bit)`
+
+  Is bit in (integer) word set?
+
+- `ISOTHER(word,bit)`
+
+  Are any other bits, except bit, in (integer) word set?
+
+- `SETBIT(word,bit)`
+
+  Set bit in (integer) word.
+
+- `CLRBIT(word,bit)`
+
+  Clear bit in (integer) word.
+
+- `NELEMS(array)`
+
+  Returns the number of elements in an array.  From the great book, The
+  Practice of Programming, by Kernighan and Pike.
+
+
+Generic Functions
+-----------------
+
+- `chomp(str)`
+
+  Perl like chomp function, chop off last char if newline.
+
+- `copyfile(src, dst, len, opt)`
+
+  Like the shell `cp(1)` and `dd(1),`, can also copy symlinks and
+  preserve the mtime of the source file.  The opt argument can be
+  a mask of:
+  
+  - `LITE_FOPT_COPYFILE_SYM (0x01)`
+  - `LITE_FOPT_KEEP_MTIME   (0x02)`
+  
+  In releases prior to v2.0 the opt argument was called `symlink`.
+  The APIs are 100% compatible if the value `1` was used to enable
+  the symlink option.
+
+- `dir(dir, ext, filter, list, strip)`
+
+  Wrapper for `scandir()` with optional filter.  Returns a list of
+  names: files and directories that must be freed after use.  See
+  the unit test for an example, or take a look at `glob(3)`, it's
+  probably what you want anyway.
+
+- `fcopyfile(src, dst)`
+
+  Like `copyfile()` but uses already open `FILE *` pointers.  Copies
+  from current file positions to current file positions until EOF.
+
+- `fexist(file)`
+
+  Check for the existence of a file, returns True(1) or False(0).
+
+- `fisdir(path)`
+
+  Check for the existence of a directory, returns True(1) or False(0).
+
+- `fopenf(mode, fmt, ...)` and `vfopenf(mode, fmt, ap)`
+
+  Like `fopen()`, but takes a formatted string as argument.  This
+  greatly simplifies operations that usually consist of composing a
+  filename from parts into a dynamic buffer before actually opening
+  the file.
+  
+  > **Notice:** the swapped order of `pathname` and `mode`!
+
+- `fremove(fmt, ...)`
+
+  Like `remove()`, but takes a formatted string as argument.  This
+  greatly simplifies operations that usually consist of composing a
+  filename from parts into a dynamic buffer before actually removing
+  the file.
+
+- `fsendfile(src, dst, len)`
+
+  Copy data between file streams, very similar to `fcopyfile()`, but
+  `dst` is allowed to be `NULL` to be able to read and discard `len`
+  bytes from `src`.
+
+- `ifconfig(ifname, addr, mask, up)`
+
+  Basic ifconfig like operations on an interface.  Only supports IPv4
+  addresses.  Note that mask is not CIDR notation.
+
+- `lfopen(file, sep)`, `lfclose(lf)`
+
+  LITE file API for parsing UNIX style configuration files like
+  `/etc/protocols` and `/etc/services`.
+
+- `lftok(lf)`
+
+  Read tokens, delimited by `sep`, from file opened with `lfopen()`.
+
+- `lfgetkey(lf, key)`
+
+  Find `key` in file opened with `lfopen()`, return value/argument.
+
+- `lfgetint(lf, key)`
+
+  Wrapper for `lfgetkey()`, returns positive integer value to `key`,
+  or `-1` if `key` is not found.
+
+- `fgetint(file, sep, key)`
+
+  Wrapper for `lfopen()`, `lfgetint()`, and `lfclose()`.  Useful for
+  when only reading a single `key` from a file.
+
+- `makepath(dir)`
+
+  Create all components of the specified directory.
+
+- `mkpath(dir, mode)`
+
+  Like `makepath()`, but also takes a `mode_t` permission mode argument.
+
+- `fmkpath(mode, fmt, ...)`
+
+  Like `mkpath()`, but takes a formatted string as argument.
+
+  > **Notice:** the swapped order of `pathname` and `mode`!
+
+- `movefile(src, dst)`
+
+  Like `copyfile()`, but renames `src` to `dst`, or recreates symlink
+  with the `dst` name.  On successful operation the source is removed
+  and the function returns POSIX OK (0).
+
+- `pidfile(name)`
+
+  Create a daemon PID file using either the `name` as a full path, if
+  `name` starts with `/`, or in `_PATH_VARRUN` using `name` as the
+  basename of the application.  If `name` is `NULL`, then `__progname`
+  is used as the basename.  The resulting file name is available to the
+  user as a read-only pointer:
+
+        extern char *__pidfile_name;
+
+  Use this function to create a PID file for your daemon when it is
+  ready to receive signals.  A client application may poll for the
+  existence of this file, so make sure to have your signal handlers
+  properly setup before calling this function.
+
+  The PID file is removed when the program exits, using an `atexit()`
+  handler.  However, depending on how the program terminates the file
+  may still exist even though the program is no longer running.
+
+  Calling this function multiple times updates the mtime of the file.
+  Only one `atexit()` handler is created, regardless of the amount of
+  times the function is called.  If the file is removed, subsequent
+  calls to this function will recreate the file.
+  
+  See below for a link to OpenBSD man page.
+
+- `pidfile_read(pidfile)`
+
+  Read PID from pid file created by `pidfile()`.
+
+- `pidfile_signal(pidfile, signal)`
+
+  Send signal to PID found in pid file created by `pidfile()`.
+
+- `progress(percent, max_width)`
+
+  Simple ASCII progress bar with a spinner.  Start it with `percent=0`
+  and set the `max_width=chars` to indicate width of the progress bar.
+  Called multiple times with the same percentage value cause spinner to
+  spin.
+
+- `rsync(src, dst, opt, *filter())`
+
+  Very simple `rsync()` to copy files and directories recursively.  It
+  supports pruning files from the destination tree that do not exist in
+  the source tree and preserving the mtime of the source files.  The opt
+  argument can be a mask of:
+  
+  - `LITE_FOPT_RSYNC_DELETE (0x01)`
+  - `LITE_FOPT_KEEP_MTIME   (0x02)`
+  
+  In releases prior to v2.0 the argument controlling pruning was called
+  `delete`, it is now called `opt`.  The APIs are 100% compatible if the
+  value `1` was used.
+
+- `runbg(cmd, delay)`
+
+  Run a command in the background, after delay microseconds, essentially
+  a background `execvp()` with a delay.  The function employs double-fork
+  to prevent zombies and closes all open files, including stdio.
+  
+```C
+    char *cmd[] = { "sh", "-c", "echo 'hej' >/tmp/foo", NULL};
+
+    runbg(cmd, 200000); /* Create /tmp/foo after 200 millisec */
+    /* Execution continues here immediately */
+```
+
+- `strmatch(str, list)`, `strnmatch(str, list, len)`
+
+  Find matching string in an array of strings.  Returns index in array on
+  match, or `-1` on error or not found.  `strnmatch()` takes an extra arg
+  to compare only `len` number of characters from `str`.
+
+- `strtrim(str)`
+
+  Trims a string from any leading and trailing white-space, returns the
+  trimmed result in the same buffer.
+
+- `systemf(fmt, ...)`
+
+  Like `system()`, but takes a formatted string as argument.  This
+  greatly simplifies operations that usually consist of composing a
+  command from parts into a dynamic buffer before calling it.
+
+- `telnet_open(addr, port), telnet_close(ctx), telnet_expect(ctx, script, output)`
+
+  Poor mans telnet expect in C.  Opens connection to a Telnet service;
+  FTP, Telnet, similar, and run an expect-like script.
+
+- `telnet_session(addr, port, script output)`
+
+  Wrapper for the above three in one API.
+
+- `tempfile()`
+
+  Secure replacement for `tmpfile()`.  Creates an invisible temporary
+  file in `/tmp` that is removed when the returned `FILE` pointer is
+  closed.
+  
+  **Note:** Requires Linux v3.11, or later, will fall back to the old
+    and unsafe `tmpfile()` on older systems.
+
+- `truncatef(length, fmt, ...)`
+
+  Like `truncate()`, but takes a formatted string as argument.  This
+  simplifies some operations when the filename otherwise have to be
+  composed from parts into a separate array before calling the real
+  function.
+
+- `which(cmd)`, `whichp(cmd)`
+
+  C implementation of UNIX which(1).  Returns a malloc'ed string with the
+  full path to `cmd` on success, otherwise `NULL`.
+  
+  `whichp()` is a predicate function, returns `TRUE` or `FALSE`.
+
+  **Note:** `which("/bin/ps aux")` will return `/bin/ps`, or `TRUE`,
+  provided of course `/bin/ps` exists.
+
+- `yorn(fmt, ...)`
+
+  Pose a question to user, appended with `(y/N)?`, returns `TRUE` for
+  yes (both `y` and `Y` are handled) and `FALSE` for everything else.
+
+
+Procfile Functions
+------------------
+
+These functions can be used to simplify access to data in `/proc` and
+`/sys` on a Linux system.
+
+### String Functions
+
+- `readsnf(line, len, fmt, ...)`
+
+  Read first line from a file composed from `fmt`, with optional args.
+  At most `len` bytes from the file are stored in `line`.
+
+  On success this function returns `line` with any trailing newlines
+  `chomp()`ed off.  On error `NULL` is returned.
+
+- `vreadsnf(line, len, fmt, ap)`
+
+  Similar to `readsnf()` but takes a `va_list` argument instead.
+
+- `writesf(str, mode, fmt, ...)`
+
+  Write the string buffer `str`, with an additional newline, to a file
+  composed from `fmt`, with optional args.  The file is opened with the
+  given `mode`, e.g. "w+", which allows for both replacing and appending
+  file content.
+
+  The function returns POSIX OK(0) on success or -1 on failure with the
+  `errno` variable set to a value from either `fopen()` or `fclose()`.
+
+### Integer Functions
+
+Read and write 32-bit and 64-bit signed values from/to files.
+
+- `vreadllf(value, fmt, ap)` and `readllf(value, fmt, ...)`
+
+  Only the first line is read.  If the line has newline that is stripped
+  before calling `strtoll()` on the line.  The arguments to the latter
+  function is such that it can convert also from a hexadecimal value.
+
+  This function may fail and return -1 on opening the file, reading a
+  line, or if the `strtoll()` function fails.  All of which set the
+  `errno` variable.  Otherwise this function return POSIX OK(0).
+
+- `readdf(value, fmt, ...)`
+
+  Read a signed 32-bit value from a file composed from `fmt`, with
+  optional args.  This function use `vreadllf()` with an additional
+  range checking for `INT_MIN` and `INT_MAX`.  Values outside that
+  cause this function to return -1 with `errno` set to `ERANGE`.
+
+- `writedf(value, mode, fmt, ...)`
+
+  Write a signed 32-bit `value` to a file composed from `fmt`, with
+  optional args.  The file is opened with the given `mode`, e.g. "w+",
+  which allows for both replacing and appending file content.
+
+  The function returns POSIX OK(0) on success or -1 on failure with the
+  `errno` variable set to a value from either `fopen()` or `fclose()`.
+
+- `writellf(value, mode, fmt, ...)`
+
+  Write a signed 64-bit `value` to a file composed from `fmt`, with
+  optional args.  The file is opened with the given `mode`, e.g. "w+",
+  which allows for both replacing and appending file content.
+
+  The function returns POSIX OK(0) on success or -1 on failure with the
+  `errno` variable set to a value from either `fopen()` or `fclose()`.
+
+
+GNU Functions
+-------------
+
+The following are useful GNU functions, that do not exist on *BSD, and
+some other platforms.
+
+- `strdupa(str)`
+
+  http://man7.org/linux/man-pages/man3/strdupa.3.html
+
+- `strndupa(str)`
+
+  http://man7.org/linux/man-pages/man3/strndupa.3.html
+
+- `strnlen(str, lim)`
+
+  http://man7.org/linux/man-pages/man3/strnlen.3.html
+
+
+OpenBSD/NetBSD/FreeBSD Functions
+--------------------------------
+
+The following are popular functions and highly useful macros from the
+*BSD world of UNIX that are sadly missing on Linux.
+
+- `fparseln(fp, *len, *lineno, delim, flags)`
+
+  http://man.openbsd.org/OpenBSD-current/man3/fparseln.3
+
+- `pidfile(basename)`
+
+  http://www.openbsd.org/cgi-bin/man.cgi/OpenBSD-current/man3/pidfile.3
+
+  **Note:** the version of `pidfile()` in -lite has been extended to
+  handle it being called multiple times, i.e. to not create multiple
+  `atexit()` handlers, and also to export a few internal paths:
+
+	- `__pidfile_path`: prefix path, default `_PATH_VARRUN`.  Notice the
+	  trailing slash requirement if you want to override it!
+	- `__pidfile_name`: full path to PID file , similar to `__progname`.
+	  See previous section for details.
+
+- `reallocarray(ptr, nmemb, size)`
+
+  http://man.openbsd.org/OpenBSD-current/man3/reallocarray.3
+
+- `strlcpy(dst, src, len)`
+
+  http://www.openbsd.org/cgi-bin/man.cgi/OpenBSD-current/man3/strlcpy.3
+
+- `strlcat(dst, src, len)`
+
+  http://www.openbsd.org/cgi-bin/man.cgi/OpenBSD-current/man3/strlcat.3
+
+- `strtonum()`
+
+  http://www.openbsd.org/cgi-bin/man.cgi/OpenBSD-current/man3/strtonum.3
+
+- `sys/queue.h` API
+
+  http://www.openbsd.org/cgi-bin/man.cgi/OpenBSD-current/man3/LIST_EMPTY.3
+
+- `sys/tree.h` API
+
+  Niels Provos' famous splay and red-black tree implementation.
+
+  http://www.openbsd.org/cgi-bin/man.cgi/OpenBSD-current/man3/SPLAY_FOREACH.3

doc/HACKING.md

@@ -71,13 +71,13 @@ disable your brain and follow the rules, one by one.
 have changed.  The initial version is 1:0:0, we follow the rules above to
 the letter: increase revision, increase current and set revision to zero,
 and finally increase age.  This, rather confusingly, gives us 2:0:1 which
-libtool then translates to `libconfuse.so.1.1.0`.
+libtool then translates to `libite.so.1.1.0`.
 
 **Example #2:** some existing functions are changed, they now return an
 `int` instead of `void`.  The initial version is 0:0:0, and we follow the
 rules again: increment revision, increment current and set revision to
 zero, set age to zero.  This gives us 1:0:0, which is then translated to
- `libconfuse.so.1.0.0`.
+ `libite.so.1.0.0`.
 
 ### Note
 

doc/Makefile.am

@@ -0,0 +1,22 @@
+dist_doc_DATA  = API.md
+EXTRA_DIST     = API.md Doxyfile.in
+DISTCLEANFILES = libite.tag
+
+if ENABLE_HTML
+pkghtmldir     = $(docdir)/html
+pkghtml_DATA   = html/*
+
+#
+# Doxygen rules from m4/ax_prog_doxygen.m4
+#
+@DX_RULES@
+
+$(pkghtml_DATA): doxygen-doc
+
+all-local: doc
+
+clean-local:
+	-rm -rf html libite.tag
+
+doc:  doxygen-doc
+endif

m4/ax_prog_doxygen.m4

@@ -0,0 +1,585 @@
+# ===========================================================================
+#      http://www.gnu.org/software/autoconf-archive/ax_prog_doxygen.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   DX_INIT_DOXYGEN(PROJECT-NAME, [DOXYFILE-PATH], [OUTPUT-DIR], ...)
+#   DX_DOXYGEN_FEATURE(ON|OFF)
+#   DX_DOT_FEATURE(ON|OFF)
+#   DX_HTML_FEATURE(ON|OFF)
+#   DX_CHM_FEATURE(ON|OFF)
+#   DX_CHI_FEATURE(ON|OFF)
+#   DX_MAN_FEATURE(ON|OFF)
+#   DX_RTF_FEATURE(ON|OFF)
+#   DX_XML_FEATURE(ON|OFF)
+#   DX_PDF_FEATURE(ON|OFF)
+#   DX_PS_FEATURE(ON|OFF)
+#
+# DESCRIPTION
+#
+#   The DX_*_FEATURE macros control the default setting for the given
+#   Doxygen feature. Supported features are 'DOXYGEN' itself, 'DOT' for
+#   generating graphics, 'HTML' for plain HTML, 'CHM' for compressed HTML
+#   help (for MS users), 'CHI' for generating a separate .chi file by the
+#   .chm file, and 'MAN', 'RTF', 'XML', 'PDF' and 'PS' for the appropriate
+#   output formats. The environment variable DOXYGEN_PAPER_SIZE may be
+#   specified to override the default 'a4wide' paper size.
+#
+#   By default, HTML, PDF and PS documentation is generated as this seems to
+#   be the most popular and portable combination. MAN pages created by
+#   Doxygen are usually problematic, though by picking an appropriate subset
+#   and doing some massaging they might be better than nothing. CHM and RTF
+#   are specific for MS (note that you can't generate both HTML and CHM at
+#   the same time). The XML is rather useless unless you apply specialized
+#   post-processing to it.
+#
+#   The macros mainly control the default state of the feature. The use can
+#   override the default by specifying --enable or --disable. The macros
+#   ensure that contradictory flags are not given (e.g.,
+#   --enable-doxygen-html and --enable-doxygen-chm,
+#   --enable-doxygen-anything with --disable-doxygen, etc.) Finally, each
+#   feature will be automatically disabled (with a warning) if the required
+#   programs are missing.
+#
+#   Once all the feature defaults have been specified, call DX_INIT_DOXYGEN
+#   with the following parameters: a one-word name for the project for use
+#   as a filename base etc., an optional configuration file name (the
+#   default is '$(srcdir)/Doxyfile', the same as Doxygen's default), and an
+#   optional output directory name (the default is 'doxygen-doc'). To run
+#   doxygen multiple times for different configuration files and output
+#   directories provide more parameters: the second, forth, sixth, etc
+#   parameter are configuration file names and the third, fifth, seventh,
+#   etc parameter are output directories. No checking is done to catch
+#   duplicates.
+#
+#   Automake Support
+#
+#   The DX_RULES substitution can be used to add all needed rules to the
+#   Makefile. Note that this is a substitution without being a variable:
+#   only the @DX_RULES@ syntax will work.
+#
+#   The provided targets are:
+#
+#     doxygen-doc: Generate all doxygen documentation.
+#
+#     doxygen-run: Run doxygen, which will generate some of the
+#                  documentation (HTML, CHM, CHI, MAN, RTF, XML)
+#                  but will not do the post processing required
+#                  for the rest of it (PS, PDF).
+#
+#     doxygen-ps:  Generate doxygen PostScript documentation.
+#
+#     doxygen-pdf: Generate doxygen PDF documentation.
+#
+#   Note that by default these are not integrated into the automake targets.
+#   If doxygen is used to generate man pages, you can achieve this
+#   integration by setting man3_MANS to the list of man pages generated and
+#   then adding the dependency:
+#
+#     $(man3_MANS): doxygen-doc
+#
+#   This will cause make to run doxygen and generate all the documentation.
+#
+#   The following variable is intended for use in Makefile.am:
+#
+#     DX_CLEANFILES = everything to clean.
+#
+#   Then add this variable to MOSTLYCLEANFILES.
+#
+# LICENSE
+#
+#   Copyright (c) 2009 Oren Ben-Kiki <oren@ben-kiki.org>
+#   Copyright (c) 2015 Olaf Mandel <olaf@mandel.name>
+#
+#   Copying and distribution of this file, with or without modification, are
+#   permitted in any medium without royalty provided the copyright notice
+#   and this notice are preserved. This file is offered as-is, without any
+#   warranty.
+
+#serial 20
+
+## ----------##
+## Defaults. ##
+## ----------##
+
+DX_ENV=""
+AC_DEFUN([DX_FEATURE_doc],  ON)
+AC_DEFUN([DX_FEATURE_dot],  OFF)
+AC_DEFUN([DX_FEATURE_man],  OFF)
+AC_DEFUN([DX_FEATURE_html], ON)
+AC_DEFUN([DX_FEATURE_chm],  OFF)
+AC_DEFUN([DX_FEATURE_chi],  OFF)
+AC_DEFUN([DX_FEATURE_rtf],  OFF)
+AC_DEFUN([DX_FEATURE_xml],  OFF)
+AC_DEFUN([DX_FEATURE_pdf],  ON)
+AC_DEFUN([DX_FEATURE_ps],   ON)
+
+## --------------- ##
+## Private macros. ##
+## --------------- ##
+
+# DX_ENV_APPEND(VARIABLE, VALUE)
+# ------------------------------
+# Append VARIABLE="VALUE" to DX_ENV for invoking doxygen and add it
+# as a substitution (but not a Makefile variable). The substitution
+# is skipped if the variable name is VERSION.
+AC_DEFUN([DX_ENV_APPEND],
+[AC_SUBST([DX_ENV], ["$DX_ENV $1='$2'"])dnl
+m4_if([$1], [VERSION], [], [AC_SUBST([$1], [$2])dnl
+AM_SUBST_NOTMAKE([$1])])dnl
+])
+
+# DX_DIRNAME_EXPR
+# ---------------
+# Expand into a shell expression prints the directory part of a path.
+AC_DEFUN([DX_DIRNAME_EXPR],
+         [[expr ".$1" : '\(\.\)[^/]*$' \| "x$1" : 'x\(.*\)/[^/]*$']])
+
+# DX_IF_FEATURE(FEATURE, IF-ON, IF-OFF)
+# -------------------------------------
+# Expands according to the M4 (static) status of the feature.
+AC_DEFUN([DX_IF_FEATURE], [ifelse(DX_FEATURE_$1, ON, [$2], [$3])])
+
+# DX_REQUIRE_PROG(VARIABLE, PROGRAM)
+# ----------------------------------
+# Require the specified program to be found for the DX_CURRENT_FEATURE to work.
+AC_DEFUN([DX_REQUIRE_PROG], [
+AC_PATH_TOOL([$1], [$2])
+if test "$DX_FLAG_[]DX_CURRENT_FEATURE$$1" = 1; then
+    AC_MSG_WARN([$2 not found - will not DX_CURRENT_DESCRIPTION])
+    AC_SUBST(DX_FLAG_[]DX_CURRENT_FEATURE, 0)
+fi
+])
+
+# DX_TEST_FEATURE(FEATURE)
+# ------------------------
+# Expand to a shell expression testing whether the feature is active.
+AC_DEFUN([DX_TEST_FEATURE], [test "$DX_FLAG_$1" = 1])
+
+# DX_CHECK_DEPEND(REQUIRED_FEATURE, REQUIRED_STATE)
+# -------------------------------------------------
+# Verify that a required features has the right state before trying to turn on
+# the DX_CURRENT_FEATURE.
+AC_DEFUN([DX_CHECK_DEPEND], [
+test "$DX_FLAG_$1" = "$2" \
+|| AC_MSG_ERROR([doxygen-DX_CURRENT_FEATURE ifelse([$2], 1,
+                            requires, contradicts) doxygen-DX_CURRENT_FEATURE])
+])
+
+# DX_CLEAR_DEPEND(FEATURE, REQUIRED_FEATURE, REQUIRED_STATE)
+# ----------------------------------------------------------
+# Turn off the DX_CURRENT_FEATURE if the required feature is off.
+AC_DEFUN([DX_CLEAR_DEPEND], [
+test "$DX_FLAG_$1" = "$2" || AC_SUBST(DX_FLAG_[]DX_CURRENT_FEATURE, 0)
+])
+
+# DX_FEATURE_ARG(FEATURE, DESCRIPTION,
+#                CHECK_DEPEND, CLEAR_DEPEND,
+#                REQUIRE, DO-IF-ON, DO-IF-OFF)
+# --------------------------------------------
+# Parse the command-line option controlling a feature. CHECK_DEPEND is called
+# if the user explicitly turns the feature on (and invokes DX_CHECK_DEPEND),
+# otherwise CLEAR_DEPEND is called to turn off the default state if a required
+# feature is disabled (using DX_CLEAR_DEPEND). REQUIRE performs additional
+# requirement tests (DX_REQUIRE_PROG). Finally, an automake flag is set and
+# DO-IF-ON or DO-IF-OFF are called according to the final state of the feature.
+AC_DEFUN([DX_ARG_ABLE], [
+    AC_DEFUN([DX_CURRENT_FEATURE], [$1])
+    AC_DEFUN([DX_CURRENT_DESCRIPTION], [$2])
+    AC_ARG_ENABLE(doxygen-$1,
+                  [AS_HELP_STRING(DX_IF_FEATURE([$1], [--disable-doxygen-$1],
+                                                      [--enable-doxygen-$1]),
+                                  DX_IF_FEATURE([$1], [don't $2], [$2]))],
+                  [
+case "$enableval" in
+#(
+y|Y|yes|Yes|YES)
+    AC_SUBST([DX_FLAG_$1], 1)
+    $3
+;; #(
+n|N|no|No|NO)
+    AC_SUBST([DX_FLAG_$1], 0)
+;; #(
+*)
+    AC_MSG_ERROR([invalid value '$enableval' given to doxygen-$1])
+;;
+esac
+], [
+AC_SUBST([DX_FLAG_$1], [DX_IF_FEATURE([$1], 1, 0)])
+$4
+])
+if DX_TEST_FEATURE([$1]); then
+    $5
+    :
+fi
+if DX_TEST_FEATURE([$1]); then
+    $6
+    :
+else
+    $7
+    :
+fi
+])
+
+## -------------- ##
+## Public macros. ##
+## -------------- ##
+
+# DX_XXX_FEATURE(DEFAULT_STATE)
+# -----------------------------
+AC_DEFUN([DX_DOXYGEN_FEATURE], [AC_DEFUN([DX_FEATURE_doc],  [$1])])
+AC_DEFUN([DX_DOT_FEATURE],     [AC_DEFUN([DX_FEATURE_dot], [$1])])
+AC_DEFUN([DX_MAN_FEATURE],     [AC_DEFUN([DX_FEATURE_man],  [$1])])
+AC_DEFUN([DX_HTML_FEATURE],    [AC_DEFUN([DX_FEATURE_html], [$1])])
+AC_DEFUN([DX_CHM_FEATURE],     [AC_DEFUN([DX_FEATURE_chm],  [$1])])
+AC_DEFUN([DX_CHI_FEATURE],     [AC_DEFUN([DX_FEATURE_chi],  [$1])])
+AC_DEFUN([DX_RTF_FEATURE],     [AC_DEFUN([DX_FEATURE_rtf],  [$1])])
+AC_DEFUN([DX_XML_FEATURE],     [AC_DEFUN([DX_FEATURE_xml],  [$1])])
+AC_DEFUN([DX_XML_FEATURE],     [AC_DEFUN([DX_FEATURE_xml],  [$1])])
+AC_DEFUN([DX_PDF_FEATURE],     [AC_DEFUN([DX_FEATURE_pdf],  [$1])])
+AC_DEFUN([DX_PS_FEATURE],      [AC_DEFUN([DX_FEATURE_ps],   [$1])])
+
+# DX_INIT_DOXYGEN(PROJECT, [CONFIG-FILE], [OUTPUT-DOC-DIR], ...)
+# --------------------------------------------------------------
+# PROJECT also serves as the base name for the documentation files.
+# The default CONFIG-FILE is "$(srcdir)/Doxyfile" and OUTPUT-DOC-DIR is
+# "doxygen-doc".
+# More arguments are interpreted as interleaved CONFIG-FILE and
+# OUTPUT-DOC-DIR values.
+AC_DEFUN([DX_INIT_DOXYGEN], [
+
+# Files:
+AC_SUBST([DX_PROJECT], [$1])
+AC_SUBST([DX_CONFIG], ['ifelse([$2], [], [$(srcdir)/Doxyfile], [$2])'])
+AC_SUBST([DX_DOCDIR], ['ifelse([$3], [], [doxygen-doc], [$3])'])
+m4_if(m4_eval(3 < m4_count($@)), 1, [m4_for([DX_i], 4, m4_count($@), 2,
+      [AC_SUBST([DX_CONFIG]m4_eval(DX_i[/2]),
+                'm4_default_nblank_quoted(m4_argn(DX_i, $@),
+                                          [$(srcdir)/Doxyfile])')])])dnl
+m4_if(m4_eval(3 < m4_count($@)), 1, [m4_for([DX_i], 5, m4_count($@,), 2,
+      [AC_SUBST([DX_DOCDIR]m4_eval([(]DX_i[-1)/2]),
+                'm4_default_nblank_quoted(m4_argn(DX_i, $@),
+                                          [doxygen-doc])')])])dnl
+m4_define([DX_loop], m4_dquote(m4_if(m4_eval(3 < m4_count($@)), 1,
+          [m4_for([DX_i], 4, m4_count($@), 2, [, m4_eval(DX_i[/2])])],
+          [])))dnl
+
+# Environment variables used inside doxygen.cfg:
+DX_ENV_APPEND(SRCDIR, $srcdir)
+DX_ENV_APPEND(PROJECT, $DX_PROJECT)
+DX_ENV_APPEND(VERSION, $PACKAGE_VERSION)
+
+# Doxygen itself:
+DX_ARG_ABLE(doc, [generate any doxygen documentation],
+            [],
+            [],
+            [DX_REQUIRE_PROG([DX_DOXYGEN], doxygen)
+             DX_REQUIRE_PROG([DX_PERL], perl)],
+            [DX_ENV_APPEND(PERL_PATH, $DX_PERL)])
+
+# Dot for graphics:
+DX_ARG_ABLE(dot, [generate graphics for doxygen documentation],
+            [DX_CHECK_DEPEND(doc, 1)],
+            [DX_CLEAR_DEPEND(doc, 1)],
+            [DX_REQUIRE_PROG([DX_DOT], dot)],
+            [DX_ENV_APPEND(HAVE_DOT, YES)
+             DX_ENV_APPEND(DOT_PATH, [`DX_DIRNAME_EXPR($DX_DOT)`])],
+            [DX_ENV_APPEND(HAVE_DOT, NO)])
+
+# Man pages generation:
+DX_ARG_ABLE(man, [generate doxygen manual pages],
+            [DX_CHECK_DEPEND(doc, 1)],
+            [DX_CLEAR_DEPEND(doc, 1)],
+            [],
+            [DX_ENV_APPEND(GENERATE_MAN, YES)],
+            [DX_ENV_APPEND(GENERATE_MAN, NO)])
+
+# RTF file generation:
+DX_ARG_ABLE(rtf, [generate doxygen RTF documentation],
+            [DX_CHECK_DEPEND(doc, 1)],
+            [DX_CLEAR_DEPEND(doc, 1)],
+            [],
+            [DX_ENV_APPEND(GENERATE_RTF, YES)],
+            [DX_ENV_APPEND(GENERATE_RTF, NO)])
+
+# XML file generation:
+DX_ARG_ABLE(xml, [generate doxygen XML documentation],
+            [DX_CHECK_DEPEND(doc, 1)],
+            [DX_CLEAR_DEPEND(doc, 1)],
+            [],
+            [DX_ENV_APPEND(GENERATE_XML, YES)],
+            [DX_ENV_APPEND(GENERATE_XML, NO)])
+
+# (Compressed) HTML help generation:
+DX_ARG_ABLE(chm, [generate doxygen compressed HTML help documentation],
+            [DX_CHECK_DEPEND(doc, 1)],
+            [DX_CLEAR_DEPEND(doc, 1)],
+            [DX_REQUIRE_PROG([DX_HHC], hhc)],
+            [DX_ENV_APPEND(HHC_PATH, $DX_HHC)
+             DX_ENV_APPEND(GENERATE_HTML, YES)
+             DX_ENV_APPEND(GENERATE_HTMLHELP, YES)],
+            [DX_ENV_APPEND(GENERATE_HTMLHELP, NO)])
+
+# Separate CHI file generation.
+DX_ARG_ABLE(chi, [generate doxygen separate compressed HTML help index file],
+            [DX_CHECK_DEPEND(chm, 1)],
+            [DX_CLEAR_DEPEND(chm, 1)],
+            [],
+            [DX_ENV_APPEND(GENERATE_CHI, YES)],
+            [DX_ENV_APPEND(GENERATE_CHI, NO)])
+
+# Plain HTML pages generation:
+DX_ARG_ABLE(html, [generate doxygen plain HTML documentation],
+            [DX_CHECK_DEPEND(doc, 1) DX_CHECK_DEPEND(chm, 0)],
+            [DX_CLEAR_DEPEND(doc, 1) DX_CLEAR_DEPEND(chm, 0)],
+            [],
+            [DX_ENV_APPEND(GENERATE_HTML, YES)],
+            [DX_TEST_FEATURE(chm) || DX_ENV_APPEND(GENERATE_HTML, NO)])
+
+# PostScript file generation:
+DX_ARG_ABLE(ps, [generate doxygen PostScript documentation],
+            [DX_CHECK_DEPEND(doc, 1)],
+            [DX_CLEAR_DEPEND(doc, 1)],
+            [DX_REQUIRE_PROG([DX_LATEX], latex)
+             DX_REQUIRE_PROG([DX_MAKEINDEX], makeindex)
+             DX_REQUIRE_PROG([DX_DVIPS], dvips)
+             DX_REQUIRE_PROG([DX_EGREP], egrep)])
+
+# PDF file generation:
+DX_ARG_ABLE(pdf, [generate doxygen PDF documentation],
+            [DX_CHECK_DEPEND(doc, 1)],
+            [DX_CLEAR_DEPEND(doc, 1)],
+            [DX_REQUIRE_PROG([DX_PDFLATEX], pdflatex)
+             DX_REQUIRE_PROG([DX_MAKEINDEX], makeindex)
+             DX_REQUIRE_PROG([DX_EGREP], egrep)])
+
+# LaTeX generation for PS and/or PDF:
+if DX_TEST_FEATURE(ps) || DX_TEST_FEATURE(pdf); then
+    DX_ENV_APPEND(GENERATE_LATEX, YES)
+else
+    DX_ENV_APPEND(GENERATE_LATEX, NO)
+fi
+
+# Paper size for PS and/or PDF:
+AC_ARG_VAR(DOXYGEN_PAPER_SIZE,
+           [a4wide (default), a4, letter, legal or executive])
+case "$DOXYGEN_PAPER_SIZE" in
+#(
+"")
+    AC_SUBST(DOXYGEN_PAPER_SIZE, "")
+;; #(
+a4wide|a4|letter|legal|executive)
+    DX_ENV_APPEND(PAPER_SIZE, $DOXYGEN_PAPER_SIZE)
+;; #(
+*)
+    AC_MSG_ERROR([unknown DOXYGEN_PAPER_SIZE='$DOXYGEN_PAPER_SIZE'])
+;;
+esac
+
+# Rules:
+AS_IF([[test $DX_FLAG_html -eq 1]],
+[[DX_SNIPPET_html="## ------------------------------- ##
+## Rules specific for HTML output. ##
+## ------------------------------- ##
+
+DX_CLEAN_HTML = \$(DX_DOCDIR)/html]dnl
+m4_foreach([DX_i], [m4_shift(DX_loop)], [[\\
+                \$(DX_DOCDIR]DX_i[)/html]])[
+
+"]],
+[[DX_SNIPPET_html=""]])
+AS_IF([[test $DX_FLAG_chi -eq 1]],
+[[DX_SNIPPET_chi="
+DX_CLEAN_CHI = \$(DX_DOCDIR)/\$(PACKAGE).chi]dnl
+m4_foreach([DX_i], [m4_shift(DX_loop)], [[\\
+               \$(DX_DOCDIR]DX_i[)/\$(PACKAGE).chi]])["]],
+[[DX_SNIPPET_chi=""]])
+AS_IF([[test $DX_FLAG_chm -eq 1]],
+[[DX_SNIPPET_chm="## ------------------------------ ##
+## Rules specific for CHM output. ##
+## ------------------------------ ##
+
+DX_CLEAN_CHM = \$(DX_DOCDIR)/chm]dnl
+m4_foreach([DX_i], [m4_shift(DX_loop)], [[\\
+               \$(DX_DOCDIR]DX_i[)/chm]])[\
+${DX_SNIPPET_chi}
+
+"]],
+[[DX_SNIPPET_chm=""]])
+AS_IF([[test $DX_FLAG_man -eq 1]],
+[[DX_SNIPPET_man="## ------------------------------ ##
+## Rules specific for MAN output. ##
+## ------------------------------ ##
+
+DX_CLEAN_MAN = \$(DX_DOCDIR)/man]dnl
+m4_foreach([DX_i], [m4_shift(DX_loop)], [[\\
+               \$(DX_DOCDIR]DX_i[)/man]])[
+
+"]],
+[[DX_SNIPPET_man=""]])
+AS_IF([[test $DX_FLAG_rtf -eq 1]],
+[[DX_SNIPPET_rtf="## ------------------------------ ##
+## Rules specific for RTF output. ##
+## ------------------------------ ##
+
+DX_CLEAN_RTF = \$(DX_DOCDIR)/rtf]dnl
+m4_foreach([DX_i], [m4_shift(DX_loop)], [[\\
+               \$(DX_DOCDIR]DX_i[)/rtf]])[
+
+"]],
+[[DX_SNIPPET_rtf=""]])
+AS_IF([[test $DX_FLAG_xml -eq 1]],
+[[DX_SNIPPET_xml="## ------------------------------ ##
+## Rules specific for XML output. ##
+## ------------------------------ ##
+
+DX_CLEAN_XML = \$(DX_DOCDIR)/xml]dnl
+m4_foreach([DX_i], [m4_shift(DX_loop)], [[\\
+               \$(DX_DOCDIR]DX_i[)/xml]])[
+
+"]],
+[[DX_SNIPPET_xml=""]])
+AS_IF([[test $DX_FLAG_ps -eq 1]],
+[[DX_SNIPPET_ps="## ----------------------------- ##
+## Rules specific for PS output. ##
+## ----------------------------- ##
+
+DX_CLEAN_PS = \$(DX_DOCDIR)/\$(PACKAGE).ps]dnl
+m4_foreach([DX_i], [m4_shift(DX_loop)], [[\\
+              \$(DX_DOCDIR]DX_i[)/\$(PACKAGE).ps]])[
+
+DX_PS_GOAL = doxygen-ps
+
+doxygen-ps: \$(DX_CLEAN_PS)
+
+]m4_foreach([DX_i], [DX_loop],
+[[\$(DX_DOCDIR]DX_i[)/\$(PACKAGE).ps: \$(DX_DOCDIR]DX_i[)/\$(PACKAGE).tag
+	\$(DX_V_LATEX)cd \$(DX_DOCDIR]DX_i[)/latex; \\
+	rm -f *.aux *.toc *.idx *.ind *.ilg *.log *.out; \\
+	\$(DX_LATEX) refman.tex; \\
+	\$(DX_MAKEINDEX) refman.idx; \\
+	\$(DX_LATEX) refman.tex; \\
+	countdown=5; \\
+	while \$(DX_EGREP) 'Rerun (LaTeX|to get cross-references right)' \\
+	                  refman.log > /dev/null 2>&1 \\
+	   && test \$\$countdown -gt 0; do \\
+	    \$(DX_LATEX) refman.tex; \\
+            countdown=\`expr \$\$countdown - 1\`; \\
+	done; \\
+	\$(DX_DVIPS) -o ../\$(PACKAGE).ps refman.dvi
+
+]])["]],
+[[DX_SNIPPET_ps=""]])
+AS_IF([[test $DX_FLAG_pdf -eq 1]],
+[[DX_SNIPPET_pdf="## ------------------------------ ##
+## Rules specific for PDF output. ##
+## ------------------------------ ##
+
+DX_CLEAN_PDF = \$(DX_DOCDIR)/\$(PACKAGE).pdf]dnl
+m4_foreach([DX_i], [m4_shift(DX_loop)], [[\\
+               \$(DX_DOCDIR]DX_i[)/\$(PACKAGE).pdf]])[
+
+DX_PDF_GOAL = doxygen-pdf
+
+doxygen-pdf: \$(DX_CLEAN_PDF)
+
+]m4_foreach([DX_i], [DX_loop],
+[[\$(DX_DOCDIR]DX_i[)/\$(PACKAGE).pdf: \$(DX_DOCDIR]DX_i[)/\$(PACKAGE).tag
+	\$(DX_V_LATEX)cd \$(DX_DOCDIR]DX_i[)/latex; \\
+	rm -f *.aux *.toc *.idx *.ind *.ilg *.log *.out; \\
+	\$(DX_PDFLATEX) refman.tex; \\
+	\$(DX_MAKEINDEX) refman.idx; \\
+	\$(DX_PDFLATEX) refman.tex; \\
+	countdown=5; \\
+	while \$(DX_EGREP) 'Rerun (LaTeX|to get cross-references right)' \\
+	                  refman.log > /dev/null 2>&1 \\
+	   && test \$\$countdown -gt 0; do \\
+	    \$(DX_PDFLATEX) refman.tex; \\
+	    countdown=\`expr \$\$countdown - 1\`; \\
+	done; \\
+	mv refman.pdf ../\$(PACKAGE).pdf
+
+]])["]],
+[[DX_SNIPPET_pdf=""]])
+AS_IF([[test $DX_FLAG_ps -eq 1 -o $DX_FLAG_pdf -eq 1]],
+[[DX_SNIPPET_latex="## ------------------------------------------------- ##
+## Rules specific for LaTeX (shared for PS and PDF). ##
+## ------------------------------------------------- ##
+
+DX_V_LATEX = \$(_DX_v_LATEX_\$(V))
+_DX_v_LATEX_ = \$(_DX_v_LATEX_\$(AM_DEFAULT_VERBOSITY))
+_DX_v_LATEX_0 = @echo \"  LATEX \" \$][@;
+
+DX_CLEAN_LATEX = \$(DX_DOCDIR)/latex]dnl
+m4_foreach([DX_i], [m4_shift(DX_loop)], [[\\
+                 \$(DX_DOCDIR]DX_i[)/latex]])[
+
+"]],
+[[DX_SNIPPET_latex=""]])
+
+AS_IF([[test $DX_FLAG_doc -eq 1]],
+[[DX_SNIPPET_doc="## --------------------------------- ##
+## Format-independent Doxygen rules. ##
+## --------------------------------- ##
+
+${DX_SNIPPET_html}\
+${DX_SNIPPET_chm}\
+${DX_SNIPPET_man}\
+${DX_SNIPPET_rtf}\
+${DX_SNIPPET_xml}\
+${DX_SNIPPET_ps}\
+${DX_SNIPPET_pdf}\
+${DX_SNIPPET_latex}\
+DX_V_DXGEN = \$(_DX_v_DXGEN_\$(V))
+_DX_v_DXGEN_ = \$(_DX_v_DXGEN_\$(AM_DEFAULT_VERBOSITY))
+_DX_v_DXGEN_0 = @echo \"  DXGEN \" \$<;
+
+.PHONY: doxygen-run doxygen-doc \$(DX_PS_GOAL) \$(DX_PDF_GOAL)
+
+.INTERMEDIATE: doxygen-run \$(DX_PS_GOAL) \$(DX_PDF_GOAL)
+
+doxygen-run:]m4_foreach([DX_i], [DX_loop],
+                         [[ \$(DX_DOCDIR]DX_i[)/\$(PACKAGE).tag]])[
+
+doxygen-doc: doxygen-run \$(DX_PS_GOAL) \$(DX_PDF_GOAL)
+
+]m4_foreach([DX_i], [DX_loop],
+[[\$(DX_DOCDIR]DX_i[)/\$(PACKAGE).tag: \$(DX_CONFIG]DX_i[) \$(pkginclude_HEADERS)
+	\$(DX_V_DXGEN)\$(DX_ENV) DOCDIR=\$(DX_DOCDIR]DX_i[) \$(DX_DOXYGEN) \$(DX_CONFIG]DX_i[)
+	\$(A""M_V_at)echo Timestamp >\$][@
+
+]])dnl
+[DX_CLEANFILES = \\]
+m4_foreach([DX_i], [DX_loop],
+[[	\$(DX_DOCDIR]DX_i[)/doxygen_sqlite3.db \\
+	\$(DX_DOCDIR]DX_i[)/\$(PACKAGE).tag \\
+]])dnl
+[	-r \\
+	\$(DX_CLEAN_HTML) \\
+	\$(DX_CLEAN_CHM) \\
+	\$(DX_CLEAN_CHI) \\
+	\$(DX_CLEAN_MAN) \\
+	\$(DX_CLEAN_RTF) \\
+	\$(DX_CLEAN_XML) \\
+	\$(DX_CLEAN_PS) \\
+	\$(DX_CLEAN_PDF) \\
+	\$(DX_CLEAN_LATEX)"]],
+[[DX_SNIPPET_doc=""]])
+AC_SUBST([DX_RULES],
+["${DX_SNIPPET_doc}"])dnl
+AM_SUBST_NOTMAKE([DX_RULES])
+
+#For debugging:
+#echo DX_FLAG_doc=$DX_FLAG_doc
+#echo DX_FLAG_dot=$DX_FLAG_dot
+#echo DX_FLAG_man=$DX_FLAG_man
+#echo DX_FLAG_html=$DX_FLAG_html
+#echo DX_FLAG_chm=$DX_FLAG_chm
+#echo DX_FLAG_chi=$DX_FLAG_chi
+#echo DX_FLAG_rtf=$DX_FLAG_rtf
+#echo DX_FLAG_xml=$DX_FLAG_xml
+#echo DX_FLAG_pdf=$DX_FLAG_pdf
+#echo DX_FLAG_ps=$DX_FLAG_ps
+#echo DX_ENV=$DX_ENV
+])

src/Makefile.am

@@ -2,26 +2,44 @@ lib_LTLIBRARIES       = libite.la
 
 libite_la_CPPFLAGS    = -D_GNU_SOURCE
 libite_la_CFLAGS      = -W -Wall -Wextra
-libite_la_LDFLAGS     = $(AM_LDFLAGS) -version-info 7:0:2
+libite_la_LDFLAGS     = $(AM_LDFLAGS) -version-info 9:0:4
 libite_la_SOURCES     = chomp.c		copyfile.c			\
-			conio.c		conio.h				\
+			conio.c		conio.h		dir.c		\
-			dir.c		fopenf.c	fremove.c	\
+			erasef.c	fopenf.c	fremove.c	\
 			fexist.c	fisdir.c			\
 			fparseln.c	fsendfile.c			\
 			ifconfig.c	lfile.c				\
-			makepath.c	progress.c			\
+			makepath.c	procval.c	progress.c	\
-			pidfile.c	pidfilefn.c			\
+			pidfile.c	pidfilefn.c	popenf.c	\
-			reallocarray.c	rsync.c				\
+			reallocarray.c	rsync.c		runbg.c		\
 			strlcpy.c 	strlcat.c 	strtonum.c	\
 			strdupa.h	strndupa.h	strnlen.h	\
-			strmatch.c	systemf.c			\
+			strmatch.c	systemf.c	strtrim.c	\
 			telnet.c	tempfile.c	truncatef.c	\
-			yorn.c		which.c				\
+			touchf.c	yorn.c		which.c		\
 			lite.h		strlite.h			\
 			queue.h		tree.h
 
 
-## Distribute these header files in the <lite/...> name space
+## Distribute these header files in the <libite/...> namespace
-pkgincludedir       = $(includedir)/lite
+pkgincludedir       = $(includedir)/libite
 pkginclude_HEADERS  = lite.h queue.h conio.h tree.h strlite.h strdupa.h	\
 		      strndupa.h strnlen.h
+
+pkgconfigdir        = $(libdir)/pkgconfig
+pkgconfig_DATA      = libite.pc
+
+## For compatibility with previous <lite/...> namespace
+if COMPAT_SYMLINK
+install-data-hook:
+	link=$(DESTDIR)$(includedir)/lite;                   \
+	if [ ! -f $$link ]; then                             \
+		$(LN_S) libite $$link;                       \
+	fi
+
+uninstall-hook:
+	link=$(shell readlink $(DESTDIR)$(includedir)/lite); \
+	if [ "$$link" = "libite" ]; then                     \
+		$(RM) $(DESTDIR)$(includedir)/lite;          \
+	fi
+endif

src/chomp.c

@@ -1,6 +1,6 @@
 /* Perl inspired chomp() implementation.
  *
- * Copyright (c) 2014-2020  Joachim Nilsson <troglobit@gmail.com>
+ * Copyright (c) 2014-2021  Joachim Wiberg <troglobit@gmail.com>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -15,19 +15,25 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+/**
+ * @file chomp.c
+ * @author Joachim Wiberg
+ * @date 2014-2021
+ * @copyright ISC License
+ */
+
 #include <errno.h>
 #include <string.h>
 
 /**
- * chomp - Perl like chomp function, chop off last char(s) if newline.
+ * Perl like chomp function, chop off last char(s) if newline.
- * @str: String to chomp
+ * @param str  String to chomp
  *
  * This function is like Perl chomp, but it's set to chop of all
  * trailing newlines.  Useful in combination with fgets().
  *
- * Returns:
+ * @returns @a str, or @c NULL with @a errno set, if @a str is not a valid pointer.
- * If @str is a valid pointer this function returns @str, otherwise
+ * @exception EINVAL if the input argument is not a valid pointer.
- * @errno is set to %EINVAL and this function returns %NULL.
  */
 char *chomp(char *str)
 {

src/conio.c

@@ -1,6 +1,6 @@
 /* A conio.h like implementation for VTANSI displays.
  *
- * Copyright (c) 2009-2020  Joachim Nilsson <troglobit@gmail.com>
+ * Copyright (c) 2009-2021  Joachim Wiberg <troglobit@gmail.com>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -15,11 +15,32 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+/**
+ * @file conio.c
+ * @author Joachim Wiberg
+ * @date 2009-2021
+ * @copyright ISC License
+ */
+
 #include <poll.h>
 #include <stdio.h>
 #include <termios.h>
 #include <unistd.h>
 
+/**
+ * Probe terminal size
+ * @param row pointer to integer to store number of rows
+ * @param col pointer to integer to store number of columns
+ *
+ * This function checks if stdin and stdout isatty() and then sets the
+ * TTY in raw mode to silently ask the size using ANSI escape sequences.
+ * This is achieved by trying to go to corner 999,999 followed by
+ * querying the cursor position.  Afterwards the TTY is returned to the
+ * state if was before, e.g. cooked.  The number of rows and columns is
+ * returned in the input arguments to this function.
+ *
+ * If stdio is @a not a TTY, then a default 24x80 is returned.
+ */
 void initscr(int *row, int *col)
 {
 	if (!row || !col)

src/conio.h

@@ -1,6 +1,6 @@
 /* A conio.h like implementation for VTANSI displays.
  *
- * Copyright (c) 2009-2020  Joachim Nilsson <troglobit@gmail.com>
+ * Copyright (c) 2009-2021  Joachim Wiberg <troglobit@gmail.com>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -15,17 +15,26 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+/**
+ * @file conio.h
+ * @author Joachim Wiberg
+ * @date 2009-2021
+ * @copyright ISC License
+ *
+ * Helper macros and functions for interacting with TTY terminals.
+ */
+
 #ifdef __cplusplus
 extern "C"
 {
 #endif
 
-#ifndef CONIO_H_
+#ifndef LIBITE_CONIO_H_
-#define CONIO_H_
+#define LIBITE_CONIO_H_
 
 #include <stdio.h>
 
-/* Attributes */
+/** Attributes */
 #define RESETATTR    0
 #define BRIGHT       1
 #define DIM          2
@@ -34,7 +43,7 @@ extern "C"
 #define REVERSE      7
 #define HIDDEN       8
 
-/* Colors for text and background */
+/** Colors for text and background */
 #define BLACK        0x0
 #define RED          0x1
 #define GREEN        0x2
@@ -54,39 +63,50 @@ extern "C"
 #define WHITE        0x17
 
 #ifndef SCREEN_WIDTH
-#define SCREEN_WIDTH 80		/* Override using, e.g. #define SCREEN_WIDTH tty_width() */
+#define SCREEN_WIDTH 80	/**< Fallback screen width, possible to override. */
 #endif
 
-/* Esc[2JEsc[1;1H             - Clear screen and move cursor to 1,1 (upper left) pos. */
+/** Clear screen and move cursor to 1,1 (upper left) pos. */
 #define clrscr()              fputs("\033[2J\033[1;1H", stdout)
-/* Esc[K                      - Erases from the current cursor position to the end of the current line. */
+/** Erases from the current cursor position to the end of the current line. */
 #define clreol()              fputs("\033[K", stdout)
-/* Esc[2K                     - Erases the entire current line. */
+/** Erases the entire current line. */
 #define delline()             fputs("\033[2K", stdout)
-/* Esc[Line;ColumnH           - Moves the cursor to the specified position (coordinates) */
+/** Moves the cursor to the specified position (coordinates) */
 #define gotoxy(x,y)           fprintf(stdout, "\033[%d;%dH", y, x)
-/* Esc[?25l (lower case L)    - Hide Cursor */
+/** Hide Cursor */
 #define hidecursor()          fputs("\033[?25l", stdout)
-/* Esc[?25h (lower case H)    - Show Cursor */
+/** Show Cursor */
 #define showcursor()          fputs("\033[?25h", stdout)
 
-/* Esc[Value;...;Valuem       - Set Graphics Mode (attr, color, val) */
+/** Set Graphics Mode (attr, color, val) */
 #define __set_gm(a,c,v)							\
 	if (!c)								\
 		fprintf(stdout, "\033[%dm", a);				\
 	else								\
 		fprintf(stdout, "\033[%d;%dm", c & 0x10 ? 1 : 0, (c & 0xF) + v)
+
+/** Set text attribute */
 #define textattr(attr)        __set_gm(attr, 0, 0)
+/** Set text color */
 #define textcolor(color)      __set_gm(RESETATTR, color, 30)
+/** Set text background */
 #define textbackground(color) __set_gm(RESETATTR, color, 40)
 
 void initscr(int *row, int *col);
 
-/* Print table heading @line to @fp, with optional leading newline
+/**
- * Example:
+ * Print table heading, with optional leading newline.
+ * @param fp    output stream
+ * @param line  string to print
+ * @param nl    leading newline or not
+ * @param attr  attribute
+ *
+ * @verbatim
  * _________________ <-- Empty line with UNDERSCORE to frame first heading
  * First heading     <-- In normal/RESETATTR
  * SUBHEADING        <-- In REVERSE and with capital letters like 'top'
+ * @endverbatim
  */
 static inline void printhdr(FILE *fp, const char *line, int nl, int attr)
 {
@@ -99,12 +119,18 @@ static inline void printhdr(FILE *fp, const char *line, int nl, int attr)
 		SCREEN_WIDTH - (int)strlen(line), "");
 }
 
+/**
+ * Print reverse mode table heading, e.g. black text on white background.
+ * @param fp    output stream
+ * @param line  string to print
+ * @param nl    leading newline or not
+ */
 static inline void printheader(FILE *fp, const char *line, int nl)
 {
 	printhdr(fp, line, nl, REVERSE);
 }
 
-#endif /* CONIO_H_ */
+#endif /* LIBITE_CONIO_H_ */
 
 #ifdef __cplusplus
 }

src/copyfile.c

@@ -21,6 +21,13 @@
  * THE SOFTWARE.
  */
 
+/**
+ * @file copyfile.c
+ * @author Claudio Matsuoka
+ * @date 2008
+ * @copyright MIT License
+ */
+
 #include <errno.h>
 #include <fcntl.h>
 #include <stdlib.h>
@@ -31,6 +38,7 @@ static int adjust_target(const char *src, char **dst)
 {
 	int isdir = 0;
 
+	retry:
 	if (fisdir(*dst)) {
 		int slash = 0;
 		char *tmp, *ptr = strrchr(src, '/');
@@ -51,16 +59,25 @@ static int adjust_target(const char *src, char **dst)
 
 		sprintf(tmp, "%s%s%s", *dst, slash ? "" : "/", ptr);
 		*dst = tmp;
+	} else {
+		struct stat st;
+
+		if (stat(*dst, &st) && fisslashdir(*dst)) {
+			makedir(*dst, 0755);
+			goto retry;
+		}
 	}
 
 	return isdir;
 }
 
-/* Actual copy loop, used by both copyfile() and fcopyfile()
+/*
- * breaks loop on error and EOF */
+ * Actual copy loop, used by both copyfile() and fcopyfile() breaks loop
+ * on error and EOF
+ */
 static ssize_t do_copy(int in, int out, size_t num, char *buffer, size_t len)
 {
-	ssize_t ret = 0, size = 0;
+	ssize_t ret = 0, size = -1;
 
 	do {
 		size_t count = num > len ? len : num;
@@ -69,11 +86,16 @@ static ssize_t do_copy(int in, int out, size_t num, char *buffer, size_t len)
 		if (ret <= 0) {
 			if (ret == -1 && EINTR == errno)
 				continue;
+			if (ret == 0 && size == -1)
+				size = 0;
 			break;
 		}
 
-		if (ret > 0)
+		if (ret > 0) {
+			if (size == -1)
+				size = 0;
 			size += write(out, buffer, ret);
+		}
 		num  -= count;
 	} while (num > 0);
 
@@ -94,28 +116,30 @@ static void set_mtime(int in, int out)
 }
 
 /**
- * copyfile - Copy a file to another.
+ * Copy a file to another.
- * @src: Full path name to source file.
+ * @param src Full path name to source file.
- * @dst: Full path name to target file.
+ * @param dst Full path name to target file.
- * @len: Number of bytes to copy, zero (0) for entire file.
+ * @param len Number of bytes to copy, zero (0) for entire file.
- * @opt: An option mask of %LITE_FOPT_COPYFILE_SYM, %LITE_FOPT_KEEP_MTIME
+ * @param opt An option mask of ::LITE_FOPT_COPYFILE_SYM, ::LITE_FOPT_KEEP_MTIME
  *
  * This is a C implementation of the command line cp(1) utility.  It is one
  * of the classic missing links in the UNIX C library.  This version is from
  * the finit project, http://helllabs.org/finit/, which is a reimplementation
  * of fastinit for the Asus EeePC.
  *
- * The @opt field replaces the @sym argument in previous releases and
+ * The @a opt field replaces the @a sym argument in previous releases
- * works as follows.  To maintain backwards compatibility with @sym
+ * and works as follows.  To maintain backwards compatibility with @a
- * the %LITE_FOPT_COPYFILE_SYM maintains a value of 1:
+ * sym the ::LITE_FOPT_COPYFILE_SYM has a value of @c 1.  Supported
+ * option flags are:
  *
- * %LITE_FOPT_COPYFILE_SYM: Recreate symlink or follow to copy target
+ * - ::LITE_FOPT_COPYFILE_SYM  Recreate symlink or follow to copy target
- * %LITE_FOPT_KEEP_MTIME:   Preserve modification time
+ * - ::LITE_FOPT_KEEP_MTIME    Preserve modification time
  *
- * Returns:
+ * @returns The number of bytes copied, or zero, which may be an error
- * The number of bytes copied, zero may be error (check errno!), but it
+ * (check @a errno, see Exceptions below), but it may also indicate that
- * may also indicate that @src was empty.  If @src is a directory @errno
+ * @a src was empty.  See exceptions, below.
- * will be set to %EISDIR since copyfile() is not recursive.
+ *
+ * @exception EISDIR if @a src is a directory, since copyfile() is not recursive.
  */
 ssize_t copyfile(const char *src, const char *dst, int len, int opt)
 {
@@ -185,7 +209,7 @@ ssize_t copyfile(const char *src, const char *dst, int len, int opt)
 	}
 
 	size = do_copy(in, out, num, buffer, BUFSIZ);
-	if (!size && errno)
+	if (size < 0)
 		saved_errno = errno;
 	else if (keep_mtim)
 		set_mtime(in, out);
@@ -203,20 +227,19 @@ exit:
 }
 
 /**
- * movefile - Move a file to another location
+ * Move a file to another location
- * @src: Source file.
+ * @param src Source file.
- * @dst: Target file, or location.
+ * @param dst Target file, or location.
  *
  * This is a C implementation of the command line mv(1) utility.
  * Usually the rename() API is sufficient, but not when moving across
  * file system boundaries.
  *
- * The @src argument must include the full path to the source file,
+ * The @p src argument must include the full path to the source file,
- * whereas the @dst argument may only be a directory, in which case the
+ * whereas the @p dst argument may only be a directory, in which case
- * same file name from @src is used.
+ * the same file name from @p src is used.
  *
- * Returns:
+ * @returns POSIX OK(0), or non-zero with @a errno set.
- * POSIX OK(0), or non-zero with errno set.
  */
 int movefile(const char *src, const char *dst)
 {
@@ -246,15 +269,11 @@ int movefile(const char *src, const char *dst)
 }
 
 /**
- * fcopyfile - Copy between FILE *fp.
+ * Copy between FILE *fp.
- * @src: Source FILE.
+ * @param src Source FILE.
- * @dst: Destination FILE.
+ * @param dst Destination FILE.
  *
- * Function takes signals into account and will restart the syscalls as
+ * @returns POSIX OK(0), or non-zero with @a errno set on error.
- * long as error is %EINTR.
- *
- * Returns:
- * POSIX OK(0), or non-zero with errno set on error.
  */
 int fcopyfile(FILE *src, FILE *dst)
 {

src/dir.c

@@ -1,6 +1,6 @@
 /* Functions for operating on files in directories.
  *
- * Copyright (c) 2008-2020  Joachim Nilsson <troglobit@gmail.com>
+ * Copyright (c) 2008-2021  Joachim Wiberg <troglobit@gmail.com>
  * 
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -15,6 +15,13 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+/**
+ * @file dir.c
+ * @author Joachim Wiberg
+ * @date 2008-2021
+ * @copyright ISC License
+ */
+
 #include <errno.h>
 #include <dirent.h>
 #include <stdlib.h>
@@ -48,32 +55,29 @@ static int matcher(const struct dirent *entry)
 }
 
 /**
- * dir - List all files of a certain type in the given directory.
+ * List all files of a certain type in the given directory.
- * @dir:   Base directory for dir operation.
+ * @param dir    Base directory for dir operation.
- * @type:  File type suffix, e.g. ".cfg".
+ * @param type   File type suffix, e.g. ".cfg".
- * @filter: Optional file name filter.
+ * @param filter Optional file name filter.
- * @list:  Pointer to an array of file names.
+ * @param list   Pointer to an array of file names.
- * @strip: Flag, if set dir() strips the file type.
+ * @param strip  Flag, if set dir() strips the file type.
  *
- * This function returns a @list of files, matching the @type suffix,
+ * This function returns a @a list of files, matching the @a type
- * in the given directory @dir.
+ * suffix, in the given directory @a dir.
  *
- * The @list argument is a pointer to where to store the dynamically
+ * The @a list argument is a pointer to where to store the dynamically
  * allocated list of file names.  This list should be free'd by first
  * calling free() on each file name and then on the list itself.
  *
- * If @filter is not %NULL it will be called for each file found.  If
+ * If @a filter is not @c NULL it will be called for each file found.
- * @filter returns non-zero the @file argument will be included in the
+ * If @a filter returns non-zero the @a file argument is included in the
- * resulting @list.  If @filter returns zero for given @file it will
+ * resulting @a list.  If @a filter returns zero for given @a file it is
- * be discarded.
+ * discarded.  If the @a strip flag is set the resulting @a list of
+ * files has their file type stripped, including the dot.  So a match
+ * "config0.cfg" would be returned as "config0".
  *
- * If the @strip flag is set the resulting @list of files has their
+ * @returns The number of files in @a list, zero if no matching files of
- * file type stripped, including the dot.  So a match "config0.cfg"
+ * @a type, or non-zero on error with @a errno set.
- * would be returned as "config0".
- *
- * Returns:
- * Number of files in @list, zero if no matching files of @type, or
- * non-zero on error with @errno set.
  */
 int dir(const char *dir, const char *type, int (*filter) (const char *file), char ***list, int strip)
 {

src/erasef.c

@@ -0,0 +1,72 @@
+/* Formatted erase()
+ *
+ * Copyright (c) 2021  Joachim Wiberg <troglobit@gmail.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/**
+ * @file erasef.c
+ * @author Joachim Wiberg
+ * @date 2021
+ * @copyright ISC License
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "lite.h"
+
+/**
+ * Like erase() but with formatted string support.
+ * @param fmt  Formatted string to be composed into a pathname
+ *
+ * This is a wrapper for the erase() function in lite.h, lessening the
+ * burden of having to compose the filename from parts in a seprate
+ * buffer.
+ *
+ * @returns Upon successful completion erasef() returns POSIX OK(0),
+ * otherwise, -1 is returned and @a errno is set to indicate the error.
+ */
+int erasef(const char *fmt, ...)
+{
+	va_list ap;
+	char *file;
+	int len;
+
+	va_start(ap, fmt);
+	len = vsnprintf(NULL, 0, fmt, ap);
+	va_end(ap);
+
+	file = alloca(len + 1);
+	if (!file) {
+		errno = ENOMEM;
+		return -1;
+	}
+
+	va_start(ap, fmt);
+	vsnprintf(file, len + 1, fmt, ap);
+	va_end(ap);
+
+	return erase(file);
+}
+
+/**
+ * Local Variables:
+ *  indent-tabs-mode: t
+ *  c-file-style: "linux"
+ * End:
+ */

src/fexist.c

@@ -21,15 +21,26 @@
  * THE SOFTWARE.
  */
 
+/**
+ * @file fexist.c
+ * @author Claudio Matsuoka
+ * @date 2008
+ * @copyright MIT License
+ */
+
 #include <errno.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdlib.h>
 #include <unistd.h>
 
+#include "lite.h"
+
 /**
- * fexist - Check if a file exists in the file system.
+ * Check if a file exists in the file system.
- * @file: File to look for, with full path.
+ * @param file File to look for, with full path.
  *
- * Returns:
+ * @returns @c TRUE(1) if the @a file exists, otherwise @c FALSE(0).
- * %TRUE(1) if the file exists, otherwise %FALSE(0).
  */
 int fexist(const char *file)
 {
@@ -44,6 +55,39 @@ int fexist(const char *file)
 	return 1;
 }
 
+/**
+ * Like fexist() but with formatted string support
+ * @param fmt  Formatted string to be composed into the file to look for.
+ *
+ * This is a wrapper for the fexist() function in lite.h, lessening the
+ * burden of having to compose the filename from parts in a seprate
+ * buffer.
+ *
+ * @returns @c TRUE(1) if the @a file exists, otherwise @c FALSE(0).
+ */
+int fexistf(const char *fmt, ...)
+{
+	va_list ap;
+	char *file;
+	int len;
+
+	va_start(ap, fmt);
+	len = vsnprintf(NULL, 0, fmt, ap);
+	va_end(ap);
+
+	file = alloca(len + 1);
+	if (!file) {
+		errno = ENOMEM;
+		return -1;
+	}
+
+	va_start(ap, fmt);
+	vsnprintf(file, len + 1, fmt, ap);
+	va_end(ap);
+
+	return fexist(file);
+}
+
 /**
  * Local Variables:
  *  indent-tabs-mode: t

src/fisdir.c

@@ -21,21 +21,27 @@
  * THE SOFTWARE.
  */
 
+/**
+ * @file fisdir.c
+ * @author Claudio Matsuoka
+ * @date 2008
+ * @copyright MIT License
+ */
+
 #include <sys/stat.h>
 #include <unistd.h>
 
 /**
- * fisdir - Check if a path exists and is a directory.
+ * Check if a path exists and is a directory.
- * @path: Path to file or directory
+ * @param path Path to file or directory
  *
- * Returns:
+ * @returns @c TRUE(1) if @p path exists and is a directory, otherwise @c FALSE(0).
- * %TRUE(1) if @path exists and is a directory, otherwise %FALSE(0).
  */
 int fisdir(const char *path)
 {
 	struct stat sb;
 
-	if (!stat(path, &sb) && S_ISDIR(sb.st_mode))
+	if (path && !stat(path, &sb) && S_ISDIR(sb.st_mode))
 		return 1;
 
 	return 0;

src/fopenf.c

@@ -1,6 +1,6 @@
 /* Formatted fopen()
  *
- * Copyright (c) 2020  Joachim Nilsson <troglobit@gmail.com>
+ * Copyright (c) 2021  Joachim Wiberg <troglobit@gmail.com>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -15,32 +15,37 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+/**
+ * @file fopenf.c
+ * @author Joachim Wiberg
+ * @date 2021
+ * @copyright ISC License
+ */
+
 #include <errno.h>
 #include <stdio.h>
 #include <stdarg.h>
 #include <stdlib.h>
 
 /**
- * fopenf - Open a file based on the formatted string and optional arguments
+ * Similar to fopenf() except it takes a @a va_list argument
- * @mode: Last argument in optional list, if omitted EINVAL
+ * @param mode An fopen() mode string, e.g. "w+".
- * @fmt:  Formatted string to be composed into a pathname
+ * @param fmt  Formatted string to be composed into a pathname.
+ * @param ap   List of variable arguemnts from va_start().
  *
- * This function is an extension to the fopen() family, lessening the burden
+ * See fopenf() for details.
- * of first having to compose the filename from parts in a seprate buffer.
  *
- * Returns:
+ * @returns a FILE pointer, or @c NULL on error.
- * Upon successful completion fopenf() a FILE pointer.  Otherwise, NULL
- * is returned and errno is set to indicate the error.
  */
-FILE *fopenf(const char *mode, const char *fmt, ...)
+FILE *vfopenf(const char *mode, const char *fmt, va_list ap)
 {
-	va_list ap;
+	va_list apc;
 	char *file;
 	int len;
 
-	va_start(ap, fmt);
+	va_copy(apc, ap);
-	len = vsnprintf(NULL, 0, fmt, ap);
+	len = vsnprintf(NULL, 0, fmt, apc);
-	va_end(ap);
+	va_end(apc);
 
 	file = alloca(len + 1);
 	if (!file) {
@@ -48,13 +53,39 @@ FILE *fopenf(const char *mode, const char *fmt, ...)
 		return NULL;
 	}
 
-	va_start(ap, fmt);
+	va_copy(apc, ap);
-	vsnprintf(file, len + 1, fmt, ap);
+	vsnprintf(file, len + 1, fmt, apc);
-	va_end(ap);
+	va_end(apc);
 
 	return fopen(file, mode);
 }
 
+/**
+ * Open a file based on the formatted string and optional arguments
+ * @param mode An fopen() mode string, e.g. "w+".
+ * @param fmt  Formatted string to be composed into a pathname.
+ *
+ * This function is an extension to the fopen() family, lessening the burden
+ * of first having to compose the filename from parts in a seprate buffer.
+ *
+ * @returns Upon successful completion, fopenf() returns a FILE pointer.
+ * Otherwise, @c NULL is returned and @a errno is set to indicate the
+ * error.
+ */
+FILE *fopenf(const char *mode, const char *fmt, ...)
+{
+	va_list ap;
+	FILE *fp;
+
+	va_start(ap, fmt);
+	fp = vfopenf(mode, fmt, ap);
+	va_end(ap);
+	if (!fp)
+		return NULL;
+
+	return fp;
+}
+
 /**
  * Local Variables:
  *  indent-tabs-mode: t

src/fparseln.c

@@ -24,6 +24,13 @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+/**
+ * @file fparseln.c
+ * @author Christos Zoulas
+ * @date 1997
+ * @copyright 2-clause BSD License
+ */
+
 #include <assert.h>
 #include <errno.h>
 #include <stdio.h>
@@ -63,10 +70,25 @@ isescaped(const char *sp, const char *p, int esc)
 }
 
 
-/* fparseln():
+/**
- *	Read a line from a file parsing continuations ending in \
+ * Read a line from a file parsing continuations and trailing newlines
- *	and eliminating trailing newlines, or comments starting with
+ * @param fp     FILE pointer to read from
- *	the comment char.
+ * @param size   The resulting length of the string, unused if @c NULL
+ * @param lineno Incremented with number of lines read, unused if @c NULL
+ * @param str    Characters to look for, escape character, continuation, and comment
+ * @param flags  ::FPARSELN_UNESCCOMM, ::FPARSELN_UNESCCONT, ::FPARSELN_UNESCESC, ::FPARSELN_UNESCREST, ::FPARSELN_UNESCALL
+ *
+ * This function reads a line from a file, parsing continuations ending
+ * in '\' and eliminating trailing newlines, or comments starting with
+ * the comment char '#'.
+ *
+ * If @a size is not @c NULL, the resulting length of the returned string
+ * is stored in @a size.
+ *
+ * If @a lineno is not @c NULL, it is incremented for each actual line
+ * read from @a fp.
+ *
+ * @returns the line read from @a fp, or @c NULL on EOF or error.
  */
 char *
 fparseln(FILE *fp, size_t *size, size_t *lineno, const char str[3], int flags)

src/fremove.c

@@ -1,6 +1,6 @@
 /* Formatted fremove()
  *
- * Copyright (c) 2020  Joachim Nilsson <troglobit@gmail.com>
+ * Copyright (c) 2021  Joachim Wiberg <troglobit@gmail.com>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -15,20 +15,27 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+/**
+ * @file fremove.c
+ * @author Joachim Wiberg
+ * @date 2021
+ * @copyright ISC License
+ */
+
 #include <errno.h>
 #include <stdio.h>
 #include <stdarg.h>
 #include <stdlib.h>
 
 /**
- * fremove - Remove a file based on the formatted string and optional arguments
+ * Remove a file based on the formatted string and optional arguments
- * @fmt: Formatted string to be composed into a pathname
+ * @param fmt Formatted string to be composed into a pathname
  *
  * This function is an extension to remove(), lessening the burden of
  * first having to compose the filename from parts in a seprate buffer.
  *
- * Returns:
+ * @returns same as remove(3), with an extra @a errno, @c ENOBUFS if
- * Return value for remove(3).
+ * alloca() fails to get a temporary buffer for composing the file name.
  */
 int fremove(const char *fmt, ...)
 {

src/fsendfile.c

@@ -21,25 +21,32 @@
  * THE SOFTWARE.
  */
 
+/**
+ * @file fsendfile.c
+ * @author Tobias Waldekranz
+ * @date 2013
+ * @copyright MIT License
+ */
+
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
 
 
 /**
- * fsendfile - copy data between file streams
+ * Copy data between file streams.
- * @src: Source stream
+ * @param src  Source stream
- * @dst: Destination stream
+ * @param dst  Destination stream
- * @len: Number of bytes to copy
+ * @param len  Number of bytes to copy
  *
- * @dst may be %NULL, in which case @len bytes are read and discarded
+ * The @p dst argument may be @c NULL, in which case @a len bytes are
- * from @src.  This can be useful for streams where seeking is not
+ * read and discarded from @a src.  This can be useful for streams where
- * permitted.  Additionally, @len may be the special value zero (0), in
+ * seeking is not permitted.  Additionally, @a len may be the special
- * which case fsendfile() will copy until %EOF is seen on @src.
+ * value zero (0), in which case fsendfile() copies until @c EOF is seen
+ * on @a src.
  *
- * Returns:
+ * @returns The number of bytes copied.  If an error is detected -1 is
- * The number of bytes copied.  If an error is detected -1 is returned
+ * returned and @a errno will be set accordingly.
- * and @errno will be set accordingly.
  */
 ssize_t fsendfile(FILE *src, FILE *dst, size_t len)
 {

src/ifconfig.c

@@ -1,7 +1,7 @@
 /* Fastinit (finit) ifconfig() implementation.
  *
  * Copyright (c) 2008-2010  Claudio Matsuoka <http://helllabs.org/finit/>
- * Copyright (C) 2009-2020  Joachim Nilsson <troglobit@gmail.com>
+ * Copyright (C) 2009-2021  Joachim Wiberg <troglobit@gmail.com>
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -22,6 +22,14 @@
  * THE SOFTWARE.
  */
 
+/**
+ * @file ifconfig.c
+ * @author Claudio Matsuoka
+ * @author Joachim Wiberg
+ * @date 2008-2021
+ * @copyright MIT License
+ */
+
 #include <arpa/inet.h>
 #include <errno.h>
 #include <net/if.h>
@@ -34,14 +42,13 @@
 extern size_t strlcpy(char *dst, const char *src, size_t siz);
 
 /**
- * ifconfig - Basic ifconfig like operations on an interface
+ * Basic ifconfig like operations on an interface
- * @ifname: Name of interface to operate on
+ * @param ifname  Name of interface to operate on
- * @addr:   If @up then set this optional IPv4 address
+ * @param addr    If @p up then set this optional IPv4 address
- * @mask:   If @up and @addr, and @addr is not INADDR_ANY, then set netmask
+ * @param mask    If @p up and @p addr, and @p addr is not @c INADDR_ANY, then set netmask
- * @up:     Control %IFF_UP flag on interface
+ * @param up      Control @c IFF_UP flag on interface
  *
- * Returns:
+ * @returns POSIX OK(0) on success, or non-zero on error.
- * POSIX OK(0) on success, or non-zero on error.
  */
 int ifconfig(const char *ifname, const char *addr, const char *mask, int up)
 {

src/lfile.c

@@ -1,6 +1,6 @@
 /* Parse UNIX /etc configuration files like /etc/protocols and /etc/services
  *
- * Copyright (c) 2015-2020  Joachim Nilsson <troglobit@gmail.com>
+ * Copyright (c) 2015-2021  Joachim Wiberg <troglobit@gmail.com>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -15,26 +15,33 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+/**
+ * @file lfile.c
+ * @author Joachim Wiberg
+ * @date 2015-2021
+ * @copyright ISC License
+ */
+
 #include <errno.h>
 #include <stdio.h>		/* FILE */
 #include <stdlib.h>		/* atoi() */
 #include <string.h>		/* strlen(), strncmp(), strtok_r() */
 #include <sys/param.h>		/* MAX() */
 
+/** @private for internal use only */
 typedef struct lfile {
-	FILE *fp;
+	FILE *fp;		/**< FILE pointer to current stream */
-	char buf[256];
+	char buf[256];		/**< Internal buffer, limted to 256 bytes per line */
-	char *save;
+	char *save;		/**< Internal save pointer */
-	const char *sep;
+	const char *sep;	/**< Record separator, from lfopen() */
 } lfile_t;
 
 /**
- * lfopen - Open file and return parsing context
+ * Open file and return parsing context.
- * @file: File to parse
+ * @param file  File to parse
- * @sep:  Separator(s) to use in lftok()
+ * @param sep   Separator(s) to use in lftok()
  *
- * Returns:
+ * @returns Pointer to an @a lfile_t parser context, or @c NULL on error.
- * Pointer to a &lftile_t parser context, or %NULL on error.
  */
 lfile_t *lfopen(const char *file, const char *sep)
 {
@@ -62,8 +69,8 @@ lfile_t *lfopen(const char *file, const char *sep)
 }
 
 /**
- * lfclose - Close a parser context
+ * Close a parser context.
- * @lf: Pointer to &lfile_t context from lfopen()
+ * @param lf: Pointer to @a lfile_t parser context from lfopen()
  */
 void lfclose(lfile_t *lf)
 {
@@ -76,12 +83,11 @@ void lfclose(lfile_t *lf)
 }
 
 /**
- * lftok - Get next token in file
+ * Get next token in file
- * @lf: Pointer to &lfile_t context from lfopen()
+ * @param lf: Pointer to @a lfile_t parser context from lfopen()
  *
- * Returns:
+ * @returns Next token, read from file previously opened with lfopen(),
- * Next token, read from file previously opened with lfopen(),
+ * or @c NULL if EOF.
- * or %NULL if EOF.
  */
 char *lftok(lfile_t *lf)
 {
@@ -110,18 +116,17 @@ char *lftok(lfile_t *lf)
 }
 
 /**
- * lfgetkey - Find key in file
+ * Find key in file
- * @lf:  Pointer to &lfile_t context from lfopen()
+ * @param lf   Pointer to @a lfile_t parser context from lfopen()
- * @key: Key to look for
+ * @param key  Key to look for
  *
- * Locate @key from the current position in the file parser context
+ * Locate @a key from the current position in the file parser context
- * returned from lfopen().  Please note, the search for @key does not
+ * returned from lfopen().  Please note, the search for @a key does not
  * start from the beginning of the file, it searches from the current
  * position.  To restart search from the beginning use rewind() on the
  * lf->fp.
  *
- * Returns:
+ * @returns The value to @a key, or @c NULL if not found.
- * The value to @key, or %NULL if not found.
  */
 char *lfgetkey(lfile_t *lf, const char *key)
 {
@@ -139,15 +144,14 @@ char *lfgetkey(lfile_t *lf, const char *key)
 }
 
 /**
- * lfgetint - Same as lfgetkey() but returns an integer
+ * Same as lfgetkey() but returns an integer.
- * @lf:  Pointer to &lfile_t context from lfopen()
+ * @param lf   Pointer to @a lfile_t parser context from lfopen()
- * @key: Key to look for
+ * @param key  Key to look for
  *
  * This function is the same as lfgetkey() but returns the positive
- * integer value for the matching @key, if found.
+ * integer value for the matching @a key, if found.
  *
- * Returns:
+ * @returns The positive integer value for @a key, or -1 if not found.
- * The positive integer value for @key, or -1 if not found.
  */
 int lfgetint(lfile_t *lf, const char *key)
 {
@@ -160,16 +164,15 @@ int lfgetint(lfile_t *lf, const char *key)
 }
 
 /**
- * fgetint - Find the integer value for key in a file
+ * Find the integer value for key in a file.
- * @file: File to search for @key
+ * @param file  File to search for @a key
- * @sep:  Separator for tokens in @file
+ * @param sep   Separator for tokens in @a file
- * @key:  Key to look for in @file
+ * @param key   Key to look for in @a file
  *
  * This is a convenience wrapper for lfopen(), lfgetint(), and
  * lfclose().
  *
- * Returns:
+ * @returns The positive integer value for @a key, or -1 if not found.
- * The positive integer value for @key, or -1 if not found.
  */
 int fgetint(const char *file, const char *sep, const char *key)
 {

src/libite.pc.in

@@ -8,5 +8,4 @@ Description: Frog DNA, basically
 Version: @VERSION@
 Requires:
 Libs: -L${libdir} -lite
-Cflags: -I${includedir}
+Cflags: -I${includedir} -D_LIBITE_LITE
-

src/lite.h

@@ -1,7 +1,7 @@
 /* Collection of frog DNA
  *
  * Copyright (c) 2008-2010  Claudio Matsuoka <cmatsuoka@gmail.com>
- * Copyright (c) 2008-2020  Joachim Nilsson <troglobit@gmail.com>
+ * Copyright (c) 2008-2023  Joachim Wiberg <troglobit@gmail.com>
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -22,17 +22,29 @@
  * THE SOFTWARE.
  */
 
+/**
+ * Collection of frog DNA
+ * @file lite.h
+ * @author Claudio Matsuoka (2008-2010)
+ * @author Joachim Wiberg (2008-2023)
+ * @copyright MIT License
+ *
+ * The latest version of this manual and the libite (-lite) software
+ * library are available at https://github.com/troglobit/libite/
+ */
+
 #ifdef __cplusplus
 extern "C"
 {
 #endif
 
-#ifndef LITE_H_
+#ifndef LIBITE_LITE_H_
-#define LITE_H_
+#define LIBITE_LITE_H_
 
 #include <errno.h>
 #include <fcntl.h>     /* Definition of AT_* constants for utimensat() */
 #include <stdio.h>
+#include <stdarg.h>
 #include <stdint.h>    /* uint8_t, uint16_t, uint32_t, INT32_MAX, etc. */
 #include <sys/stat.h>
 #include <sys/types.h>
@@ -43,36 +55,51 @@ extern "C"
 /*
  * fparseln() specific operation flags.
  */
-#define FPARSELN_UNESCESC	0x01
+#define FPARSELN_UNESCESC	0x01	/**< Remove escape preceding an escaped comment. */
-#define FPARSELN_UNESCCONT	0x02
+#define FPARSELN_UNESCCONT	0x02	/**< Remove escape preceding an escaped continuation. */
-#define FPARSELN_UNESCCOMM	0x04
+#define FPARSELN_UNESCCOMM	0x04	/**< Remove escape preceding an escaped escape. */
-#define FPARSELN_UNESCREST	0x08
+#define FPARSELN_UNESCREST	0x08	/**< Remove escape preceding any other character. */
-#define FPARSELN_UNESCALL	0x0f
+#define FPARSELN_UNESCALL	0x0f	/**< All of the above. */
 
 /*
  * copyfile() and rsync() option flags
  */
-#define LITE_FOPT_RSYNC_DELETE  0x01
+#define LITE_FOPT_RSYNC_DELETE  0x01	/**< Prune files from destination that are not in source */
-#define LITE_FOPT_COPYFILE_SYM  0x01
+#define LITE_FOPT_COPYFILE_SYM  0x01	/**< Recreate symlink or follow to copy target */
-#define LITE_FOPT_KEEP_MTIME    0x02
+#define LITE_FOPT_KEEP_MTIME    0x02	/**< Preserve modification time */
 
-typedef struct lfile lfile_t;
+typedef struct lfile lfile_t;		/**< Opqaue context struct for lfile APIs */
-typedef struct sdbuf sdbuf_t;
+typedef struct sdbuf sdbuf_t;		/**< Opqaue context struct for telnet APIs */
 
 char   *chomp      (char *str);
+
+int     erasef     (const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
+	
 char   *fparseln   (FILE *, size_t *, size_t *, const char[3], int);
 
 int     fexist     (const char *file);
+int     fexistf    (const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));;
 int     fisdir     (const char *path);
 
-FILE   *fopenf     (const char *mode, const char *fmt, ...);
+FILE   *vfopenf    (const char *mode, const char *fmt, va_list ap);
-int     fremove    (const char *fmt, ...);
+FILE   *fopenf     (const char *mode, const char *fmt, ...) __attribute__ ((format (printf, 2, 3)));
+int     fremove    (const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
 FILE   *tempfile   (void);
 ssize_t copyfile   (const char *src, const char *dst, int len, int opt);
 int     movefile   (const char *src, const char *dst);
 int     fcopyfile  (FILE *src, FILE *dst);
 ssize_t fsendfile  (FILE *src, FILE *dst, size_t len);
-int     truncatef  (off_t length, const char *fmt, ...);
+int     truncatef  (off_t length, const char *fmt, ...) __attribute__ ((format (printf, 2, 3)));
+
+char   *vreadsnf   (char *line, size_t len, const char *fmt, va_list ap);
+char   *readsnf    (char *line, size_t len, const char *fmt, ...);
+int     writesf    (const char *str, const char *mode, const char *fmt, ...);
+
+int     vreadllf   (long long *value, const char *fmt, va_list ap);
+int     readllf    (long long *value, const char *fmt, ...);
+int     readdf     (int *value, const char *fmt, ...);
+int     writellf   (long long value, const char *mode, const char *fmt, ...);
+int     writedf    (int value, const char *mode, const char *fmt, ...);
 
 int     ifconfig   (const char *ifname, const char *addr, const char *mask, int up);
 
@@ -83,13 +110,15 @@ char   *lfgetkey   (lfile_t *lf, const char *key);
 int     lfgetint   (lfile_t *lf, const char *key);
 int     fgetint    (const char *file, const char *sep, const char *key);
 
-int     fmkpath    (mode_t mode, const char *fmt, ...);
+int     fmkpath    (mode_t mode, const char *fmt, ...) __attribute__ ((format (printf, 2, 3)));
 int     mkpath     (const char *dir, mode_t mode);
 int     makepath   (const char *dir);
 
 int     dir        (const char *dir, const char *type, int (*filter) (const char *file), char ***list, int strip);
 int     rsync      (char *src, char *dst, int opt,  int (*filter) (const char *file));
 
+FILE   *popenf     (const char *type, const char *fmt, ...) __attribute__ ((format (printf, 2, 3)));
+
 int     pidfile       (const char *basename);
 int     pidfile_signal(const char *pidfile, int signal);
 pid_t   pidfile_read  (const char *pidfile);
@@ -100,14 +129,17 @@ void   *reallocarray(void *optr, size_t nmemb, size_t size);
 void    progress       (int percent, int max_width);
 void    progress_simple(int percent);
 
-int     systemf        (const char *fmt, ...);
+int     runbg          (char *const cmd[], int delay);
+int     systemf        (const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
 
 sdbuf_t*telnet_open    (int addr, short port);
 int     telnet_close   (sdbuf_t *ctx);
 int     telnet_expect  (sdbuf_t *ctx, char *script[], FILE *output);
 int     telnet_session (int addr, short port, char *script[], FILE *output);
 
-int     yorn       (const char *fmt, ...);
+int     touchf         (const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
+
+int     yorn       (const char *fmt, ...) __attribute__ ((format (printf, 1, 2)));
 
 char   *which      (const char *cmd);
 int     whichp     (const char *cmd);
@@ -115,17 +147,34 @@ int     whichp     (const char *cmd);
 #ifndef touch
 #include <sys/stat.h>		/* utimensat() */
 #include <sys/time.h>		/* utimensat() on *BSD */
+/**
+ * Create a file, ignoring errors for already existing files
+ * @param path  Path to file to create.
+ *
+ * @returns POSIX OK(0), or non-zero on error.
+ */
 static inline int touch(const char *path)
 {
-	if (mknod((path), S_IFREG|0644, 0)) {
+	int fd;
-		if (errno == EEXIST)
+
-			return utimensat(AT_FDCWD, path, NULL, 0);
+	if (utimensat(AT_FDCWD, path, NULL, 0)) {
-		return -1;
+		if (errno != ENOENT)
+			return -1;
+		fd = creat(path, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH);
+		if (fd < 0)
+			return -1;
+		close(fd);
 	}
 	return 0;
 }
 #endif
 #ifndef makedir
+/**
+ * Create a directory, ignoring errors for already existing files
+ * @param path  Path to directory to create.
+ *
+ * @returns POSIX OK(0), or non-zero on error.
+ */
 static inline int makedir(const char *path, mode_t mode)
 {
 	if (mkdir(path, mode) && errno != EEXIST)
@@ -134,6 +183,12 @@ static inline int makedir(const char *path, mode_t mode)
 }
 #endif
 #ifndef makefifo
+/**
+ * Create a FIFO, ignoring errors for already existing files
+ * @param path  Path to FIFO to create.
+ *
+ * @returns POSIX OK(0), or non-zero on error.
+ */
 static inline int makefifo(const char *path, mode_t mode)
 {
 	if (mkfifo(path, mode) && errno != EEXIST)
@@ -142,6 +197,12 @@ static inline int makefifo(const char *path, mode_t mode)
 }
 #endif
 #ifndef erase
+/**
+ * Remove a file, ignoring errors for missing files
+ * @param path  Path to file to remove.
+ *
+ * @returns POSIX OK(0), or non-zero on error.
+ */
 static inline int erase(const char *path)
 {
 	if (remove(path) && errno != ENOENT)
@@ -163,27 +224,32 @@ static inline int erase(const char *path)
 
 /* Unline isset(), setbit() et al, these work with integers/shorts/longwords/etc. */
 #ifndef ISCLR
-#define ISCLR(word,bit)   ((word &   (1 << (bit)) ? 0 : 1))
+#define ISCLR(word,bit)   ((word &   (1 << (bit)) ? 0 : 1)) /**< Is bit cleared in word? */
 #endif
 #ifndef ISSET
-#define ISSET(word,bit)   ((word &   (1 << (bit)) ? 1 : 0))
+#define ISSET(word,bit)   ((word &   (1 << (bit)) ? 1 : 0)) /**< Is bit set in word? */
 #endif
 #ifndef ISOTHER
-#define ISOTHER(word,bit) ((word &  ~(1 << (bit)) ? 1 : 0)) /* Is any other bit set? */
+#define ISOTHER(word,bit) ((word &  ~(1 << (bit)) ? 1 : 0)) /**< Is any other bit set? */
 #endif
 #ifndef SETBIT
-#define SETBIT(word,bit)   (word |=  (1 << (bit)))
+#define SETBIT(word,bit)   (word |=  (1 << (bit)))          /**< Set bit in word. */
 #endif
 #ifndef CLRBIT
-#define CLRBIT(word,bit)   (word &= ~(1 << (bit)))
+#define CLRBIT(word,bit)   (word &= ~(1 << (bit)))          /**< Clear bit in word. */
 #endif
 
 /* From The Practice of Programming, by Kernighan and Pike */
 #ifndef NELEMS
-#define NELEMS(array) (sizeof(array) / sizeof(array[0]))
+#define NELEMS(array) (sizeof(array) / sizeof(array[0]))    /**< Number of elements in array. */
 #endif
 
-/* Does directory end with a slash? */
+/**
+ * Does directory end with a slash?
+ * @param dir  Path string to check.
+ *
+ * @returns @c TRUE(1) or @c FALSE(0)
+ */
 static inline int fisslashdir(const char *dir)
 {
    if (!dir)
@@ -197,10 +263,10 @@ static inline int fisslashdir(const char *dir)
 
 /* Compat */
 #define copy_filep(src, dst)        fcopyfile(src, dst)
-#define pidfile_read_pid(file)      pifile_read(file)
+#define pidfile_read_pid(file)      pidfile_read(file)
 #define signal_pidfile(file, signo) pidfile_signal(file, signo)
 
-#endif /* LITE_H_ */
+#endif /* LIBITE_LITE_H_ */
 
 #ifdef __cplusplus
 }

src/makepath.c

@@ -1,6 +1,6 @@
 /* mkpath() -- Create all components leading up to a given directory
  *
- * Copyright (c) 2013-2016  Joachim Nilsson <troglobit@gmail.com>
+ * Copyright (c) 2013-2021  Joachim Wiberg <troglobit@gmail.com>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -15,6 +15,13 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+/**
+ * @file makepath.c
+ * @author Joachim Wiberg
+ * @date 2013-2021
+ * @copyright ISC License
+ */
+
 #include <errno.h>
 #include <libgen.h>
 #include <stdarg.h>
@@ -24,12 +31,11 @@
 #include "lite.h"
 
 /**
- * mkpath - Like makepath() but takes a mode_t argument
+ * makepath() but takes a mode_t argument.
- * @dir:  Directory to created, relative or absolute
+ * @param dir   Directory to created, relative or absolute
- * @mode: A &mode_t mode to create @dir with
+ * @param mode  A &mode_t mode to create @a dir with
  *
- * Returns:
+ * @returns POSIX OK(0) on success, otherwise -1 with @a errno set.
- * POSIX OK(0) on success, otherwise -1 with @errno set.
  */
 int mkpath(const char *dir, mode_t mode)
 {
@@ -49,15 +55,13 @@ int mkpath(const char *dir, mode_t mode)
 }
 
 /**
- * fmkpath - Formatted version of mkpath()
+ * Formatted version of mkpath().
- * @mode: A &mode_t mode to create directories with
+ * @param mode  A mode_t mode to create directories with
- * @fmt:  Formatted string to be composed into a pathname
+ * @param fmt   Formatted string to be composed into a pathname
  *
- * Note:
+ * @note Notice the swapped arguments, compared to mkpath()!
- * Notice the swapped arguments, compared to mkpath()!
  *
- * Returns:
+ * @returns POSIX OK(0) on success, otherwise -1 with @a errno set.
- * POSIX OK(0) on success, otherwise -1 with @errno set.
  */
 int fmkpath(mode_t mode, const char *fmt, ...)
 {
@@ -83,19 +87,20 @@ int fmkpath(mode_t mode, const char *fmt, ...)
 }
 
 /**
- * makepath - Create all components of the specified directory.
+ * Create all components of the specified directory.
- * @dir: Directory to create.
+ * @param dir  Directory to create.
  *
- * Comment:
+ * @note It is strongly recommended to use mkpath() over this function
- * It is recommended to use mkpath() over this function since it has
+ * since it has the @a mode argument while this function default to
- * the @mode argument while this function instead default ot 0777,
+ * 0777, which in most cases is insecure.
- * which in most cases is insecure.
  *
- * Returns:
+ * @returns POSIX OK (0) on success, otherwise -1 and @a errno set
- * POSIX OK (0) on success, otherwise -1 and errno set appropriately.
+ * appropriately.
- * This function returns EINVAL on bad argument, or ENOMEM when it
+ * 
- * fails allocating temporary memory.  For other error codes see the
+ * @exception EINVAL on bad argument, or
- * mkdir() syscall description.
+ * @exception ENOMEM when it fails allocating temporary memory.
+ *
+ * For other error codes see the mkdir(2) syscall description.
  */
 int makepath(const char *dir)
 {

src/pidfile.c

@@ -31,6 +31,13 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
+/**
+ * @file pidfile.c
+ * @author NetBSD Foundation Inc.
+ * @date 1999
+ * @copyright 2-clause BSD License
+ */
+
 #include <sys/stat.h>		/* utimensat() */
 #include <sys/time.h>		/* utimensat() on *BSD */
 #include <sys/types.h>
@@ -38,6 +45,7 @@
 #include <paths.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
 
 #ifndef pidfile
@@ -50,8 +58,18 @@ const  char *__pidfile_path = _PATH_VARRUN; /* Note: includes trailing slash '/'
 const  char *__pidfile_name = NULL;
 extern char *__progname;
 
-int
+/**
-pidfile(const char *basename)
+ * Create or update mtime of process PID file.
+ * @param basename  Program name, or @c NULL, may start with '/'
+ *
+ * This function is intended to be used by UNIX daemons to save the PID of the main process
+ * responsible for handling signals.  If @p basename is @c NULL the implicit @a __progname
+ * variable from the C-library is used.  The @p basename may also start with '/', in which
+ * case it is interpreted as the absolute path to the PID file.
+ *
+ * @returns POSIX OK(0) on success, otherwise non-zero on error.
+ */
+int pidfile(const char *basename)
 {
 	int save_errno;
 	int atexit_already;
@@ -76,7 +94,10 @@ pidfile(const char *basename)
 	}
 
 	if (basename[0] != '/') {
-		if (asprintf(&pidfile_path, "%s%s.pid", __pidfile_path, basename) == -1)
+		size_t len = strlen(__pidfile_path);
+		int slash = __pidfile_path[len > 0 ? len - 1 : 0] != '/';
+
+		if (asprintf(&pidfile_path, "%s%s%s.pid", __pidfile_path, slash ? "/" : "", basename) == -1)
 			return (-1);
 	} else {
 		if (asprintf(&pidfile_path, "%s", basename) == -1)

src/pidfilefn.c

@@ -1,6 +1,6 @@
 /* Functions for dealing with PID files (client side)
  *
- * Copyright (c) 2009-2020  Joachim Nilsson <troglobit@gmail.com>
+ * Copyright (c) 2009-2021  Joachim Wiberg <troglobit@gmail.com>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -15,6 +15,13 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+/**
+ * @file pidfilefn.c
+ * @author Joachim Wiberg
+ * @date 2009-2021
+ * @copyright ISC License
+ */
+
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -24,16 +31,20 @@
 extern char *chomp(char *str);
 
 /**
- * pidfile_read - Reads a PID value from a pidfile.
+ * Reads a PID value from a pidfile.
- * @pidfile: File containing PID, usually in /var/run/<PROC>.pid
+ * @param pidfile  File containing PID, usually in @c /var/run/PROCNAME.pid
  *
- * This function takes a @pidfile and returns the PID found therein.
+ * This function takes a @p pidfile and returns the PID found therein.
  *
- * Returns:
+ * @returns On invalid @p pidfile, -1 with @a errno set. If the @p
- * On invalid @pidfile -1 and errno set to %EINVAL, when @pidfile does not exist -1
+ * pidfile is empty, or when its contents cannot be translated, this
- * and errno set to %ENOENT.  When the pidfile is empty or when its contents cannot
+ * function returns zero (0), on success this function returns a PID
- * be translated this function returns zero (0), on success this function returns
+ * value greater than one.
- * a PID value greater than one. PID 1 is reserved for the system init process.
+ *
+ * @note PID 1 is reserved for the system init  process.
+ *
+ * @exception EINVAL on invalid @p pidfile, or
+ * @exception ENOENT when @p pidfile does not exist.
  */
 pid_t pidfile_read(const char *pidfile)
 {
@@ -66,15 +77,14 @@ pid_t pidfile_read(const char *pidfile)
 }
 
 /**
- * pidfile_poll - Poll for the existence of a pidfile and return PID
+ * Poll for the existence of a pidfile and return PID.
- * @pidfile: Path to pidfile to poll for
+ * @param pidfile  Path to pidfile to poll for
  *
- * This function polls for the pidfile at @pidfile for at most 5 seconds
+ * This function polls for the pidfile at @p pidfile for at most 5
- * before timing out. If the file is created within that time span the
+ * seconds before timing out. If the file is created within that time
- * file is read and its PID contents returned.
+ * span the file is read and its PID contents returned.
  *
- * Returns:
+ * @returns The PID read from @p pidfile, or zero on timeout.
- * The PID read from @pidfile, or zero on timeout.
  */
 pid_t pidfile_poll(const char *pidfile)
 {
@@ -92,15 +102,14 @@ pid_t pidfile_poll(const char *pidfile)
 }
 
 /**
- * pidfile_signal - Send signal to a PID and cleanup pidfile afterwards
+ * Send signal to a PID and cleanup pidfile afterwards.
- * @pidfile: File containing PID, usually in /var/run/<PROC>.pid
+ * @param pidfile  File containing PID, usually in @c /var/run/PROCNAME.pid
- * @signal: Signal to send to PID found in @pidfile.
+ * @param signal  Signal to send to PID found in @p pidfile.
  *
- * If @signal is any of %SIGTERM, %SIGKILL, or if kill() returns -1 the
+ * If @p signal is any of @c SIGTERM or @c SIGKILL, or if kill(2)
- * @pidfile is removed.
+ * returns -1, the @p pidfile is removed.
  *
- * Returns:
+ * @returns POSIX OK(0) on success, non-zero otherwise.
- * POSIX OK(0) on success, non-zero otherwise.
  */
 int pidfile_signal(const char *pidfile, int signal)
 {

src/popenf.c

@@ -0,0 +1,63 @@
+/* Formatted popen()
+ *
+ * Copyright (c) 2023  Tobias Waldekranz <tobias@waldekranz.com>
+ * Copyright (c) 2023  Joachim Wiberg <troglobit@gmail.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdlib.h>
+
+/**
+ * Formatted pipe stream to or from a process
+ * @param type A popen() type, "r" or "w", can also include "e" for @c O_CLOEXEC.
+ * @param fmt  Formatted string to be composed into a shell command line.
+ *
+ * This function is an extension to popen(), lessening the burden of
+ * first having to compose the filename from parts in a seprate buffer.
+ *
+ * @returns Upon successful completion, popenf() returns a FILE pointer.
+ * Otherwise, @c NULL is returned and @a errno is set to indicate the
+ * error.
+ */
+FILE *popenf(const char *type, const char *fmt, ...)
+{
+	va_list ap;
+	char *cmd;
+	int len;
+
+	va_start(ap, fmt);
+	len = vsnprintf(NULL, 0, fmt, ap);
+	va_end(ap);
+
+	cmd = alloca(len + 1);
+	if (!cmd) {
+		errno = ENOMEM;
+		return NULL;
+	}
+
+	va_start(ap, fmt);
+	vsnprintf(cmd, len + 1, fmt, ap);
+	va_end(ap);
+
+	return popen(cmd, type);
+}

src/procval.c

@@ -0,0 +1,229 @@
+/* Reading and writing values/strings to/from /proc and /sys style files
+ *
+ * Copyright (c) 2023  Tobias Waldekranz <tobias@waldekranz.com>
+ * Copyright (c) 2023  Joachim Wiberg <troglobit@gmail.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/**
+ * @file procval.c
+ * @author Joachim Wiberg
+ * @date 2023
+ * @copyright ISC License
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdlib.h>
+
+#include "lite.h"
+
+/**
+ * Similar to readsnf() except it takes a @a va_list argument
+ * @param line Pointer to line buffer.
+ * @param len  Size of line buffer.
+ * @param fmt  Formatted string to be composed into a pathname.
+ * @param ap   List of variable arguemnts from va_start().
+ *
+ * For details, see readsnf().
+ *
+ * @returns same as readsnf().
+ */
+char *vreadsnf(char *line, size_t len, const char *fmt, va_list ap)
+{
+	va_list apc;
+	FILE *fp;
+
+	va_copy(apc, ap);
+	fp = vfopenf("r", fmt, apc);
+	va_end(apc);
+	if (!fp)
+		return NULL;
+
+	if (!fgets(line, len, fp)) {
+		fclose(fp);
+		return NULL;
+	}
+
+	fclose(fp);
+	return chomp(line);
+}
+
+
+/**
+ * Read first line from a file composed from fmt and optional args.
+ * @param line Pointer to line buffer.
+ * @param len  Size of line buffer.
+ * @param fmt  Formatted string to be composed into a pathname.
+ *
+ * @returns On success, this function returns the @p line read from the
+ * file, with any trailing '\n' chomp()ed out.  On error, @c NULL.
+ */
+char *readsnf(char *line, size_t len, const char *fmt, ...)
+{
+	va_list ap;
+	char *ln;
+
+	va_start(ap, fmt);
+	ln = vreadsnf(line, len, fmt, ap);
+	va_end(ap);
+
+	return ln;
+}
+
+/**
+ * Write a string buffer to a file composed from fmt and optional args.
+ * @param str  Pointer to string buffer, may be multiple lines.
+ * @param mode An fopen() mode string, e.g. "w+".
+ * @param fmt  Formatted string to be composed into a pathname.
+ *
+ * @returns result of operation, with @a errno set on error.
+ */
+int writesf(const char *str, const char *mode, const char *fmt, ...)
+{
+	va_list ap;
+	FILE *fp;
+
+	va_start(ap, fmt);
+	fp = vfopenf(mode, fmt, ap);
+	va_end(ap);
+	if (!fp)
+		return -1;
+
+	fprintf(fp, "%s\n", str);
+	return fclose(fp);
+}
+
+/**
+ * Same as readllf() except it takes a @a va_list argument.
+ */
+int vreadllf(long long *value, const char *fmt, va_list ap)
+{
+	char line[0x100];
+
+	if (!vreadsnf(line, sizeof(line), fmt, ap))
+		return -1;
+
+	errno = 0;
+	*value = strtoll(line, NULL, 0);
+
+	return errno ? -1 : 0;
+}
+
+/**
+ * Read 64-bit integer value from a file composed from fmt and optional args.
+ * @param value Pointer to where to store read 64-bit integer value.
+ * @param mode An fopen() mode string, e.g. "w+".
+ * @param fmt  Formatted string to be composed into a pathname.
+ *
+ * @returns result of operation, with @a errno set on error.
+ */
+int readllf(long long *value, const char *fmt, ...)
+{
+	va_list ap;
+	int rc;
+
+	va_start(ap, fmt);
+	rc = vreadllf(value, fmt, ap);
+	va_end(ap);
+
+	return rc;
+}
+
+
+/**
+ * Read integer value from a file composed from fmt and optional args.
+ * @param value Pointer to where to store read integer value.
+ * @param mode An fopen() mode string, e.g. "w+".
+ * @param fmt  Formatted string to be composed into a pathname.
+ *
+ * @returns result of operation, with @a errno set on error.
+ */
+int readdf(int *value, const char *fmt, ...)
+{
+	long long tmp;
+	va_list ap;
+	int rc;
+
+	va_start(ap, fmt);
+	rc = vreadllf(&tmp, fmt, ap);
+	va_end(ap);
+
+	if (rc)
+		return rc;
+
+	if (tmp < INT_MIN || tmp > INT_MAX) {
+		errno = ERANGE;
+		return -1;
+	}
+
+	*value = tmp;
+	return 0;
+}
+
+/**
+ * Write 64-bit integer value to a file composed from fmt and optional args.
+ * @param value 64-bit integer value to write.
+ * @param mode An fopen() mode string, e.g. "w+".
+ * @param fmt  Formatted string to be composed into a pathname.
+ *
+ * @returns result of operation, with @a errno set on error.
+ */
+int writellf(long long value, const char *mode, const char *fmt, ...)
+{
+	va_list ap;
+	FILE *fp;
+
+	va_start(ap, fmt);
+	fp = vfopenf(mode, fmt, ap);
+	va_end(ap);
+	if (!fp)
+		return -1;
+
+	fprintf(fp, "%lld\n", value);
+	return fclose(fp);
+}
+
+
+/**
+ * Write integer value to a file composed from fmt and optional args.
+ * @param value Integer value to write.
+ * @param mode An fopen() mode string, e.g. "w+".
+ * @param fmt  Formatted string to be composed into a pathname.
+ *
+ * @returns result of operation, with @a errno set on error.
+ */
+int writedf(int value, const char *mode, const char *fmt, ...)
+{
+	va_list ap;
+	FILE *fp;
+
+	va_start(ap, fmt);
+	fp = vfopenf(mode, fmt, ap);
+	va_end(ap);
+	if (!fp)
+		return -1;
+
+	fprintf(fp, "%d\n", value);
+	return fclose(fp);
+}
+
+
+/**
+ * Local Variables:
+ *  indent-tabs-mode: t
+ *  c-file-style: "linux"
+ * End:
+ */

src/progress.c

@@ -1,6 +1,6 @@
 /* Simple termios based progress bar
  *
- * Copyright (c) 2012-2020  Joachim Nilsson <troglobit@gmail.com>
+ * Copyright (c) 2012-2021  Joachim Wiberg <troglobit@gmail.com>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -15,6 +15,13 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+/**
+ * @file progress.c
+ * @author Joachim Wiberg
+ * @date 2012-2021
+ * @copyright ISC License
+ */
+
 #include <limits.h>		/* INT_MAX */
 #include <stdio.h>
 #include <string.h>
@@ -40,21 +47,21 @@ static char spinner(char *style)
 }
 
 /**
- * progress - Advanced ASCII progress bar with spinner
+ * Advanced ASCII progress bar with spinner
- * @percent: Start first call with this set to 0, end with 100
+ * @param percent    Start first call with this set to 0, end with 100
- * @max_width: Max width of progress bar, in total characters.
+ * @param max_width  Max width of progress bar, in total characters.
  *
  * This function draws an advanced ASCII progressbar at the current
  * line.  It always start from the first column.
  *
- * The progress bar will hide the cursor if started with @percent 0 and
+ * The progress bar will hide the cursor if started with @p percent 0
- * show it again at the end, when called with @percent 100.
+ * and show it again at the end, when called with @p percent 100.
  *
  * While being called with the same percentage the spinner will spin,
  * to show the user the process hasn't frozen.
  *
- * If the output TTY cannot interpret control characters, like \r, it is
+ * If the output TTY cannot interpret control characters, like `\r`, it
- * advised to instead used the progress_simple() function.
+ * is advised to instead used the progress_simple() function.
  */
 void progress(int percent, int max_width)
 {
@@ -85,6 +92,10 @@ void progress(int percent, int max_width)
 	}
 }
 
+/**
+ * Alternative progress bar on systems where progress() doesn't work
+ * @param percent  Start first call with this set to 0, end with 100
+ */
 void progress_simple(int percent)
 {
 	static int last = 1;

src/queue.h

@@ -40,7 +40,12 @@ extern "C"
 #ifndef	_SYS_QUEUE_H_
 #define	_SYS_QUEUE_H_
 
-/*
+/**
+ * @file queue.h
+ * @author The Regents of the University of California
+ * @date 1991, 1993
+ * @copyright 3-clause BSD License
+ *
  * This file defines five types of data structures: singly-linked lists,
  * lists, simple queues, tail queues and XOR simple queues.
  *

src/reallocarray.c

@@ -15,6 +15,13 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+/**
+ * @file reallocarray.c
+ * @author Otto Moerbeek
+ * @date 2008
+ * @copyright ISC License
+ */
+
 #include <sys/types.h>
 #include <errno.h>
 #include <stdint.h>
@@ -26,8 +33,15 @@
  */
 #define MUL_NO_OVERFLOW ((size_t)1 << (sizeof(size_t) * 4))
 
-void *
+/**
-reallocarray(void *optr, size_t nmemb, size_t size)
+ * Similar to realloc() but for an array of items, like calloc()
+ * @param optr   Pointer to old (current) array
+ * @param nmemb  Number of elements
+ * @param size   Size of each element, in bytes
+ *
+ * @returns A pointer to the new array, or @c NULL on error.
+ */
+void *reallocarray(void *optr, size_t nmemb, size_t size)
 {
 	if ((nmemb >= MUL_NO_OVERFLOW || size >= MUL_NO_OVERFLOW) &&
 	    nmemb > 0 && SIZE_MAX / nmemb < size) {

src/rsync.c

@@ -1,6 +1,6 @@
 /* Micro "rsync" implementation.
  *
- * Copyright (c) 2011-2020  Joachim Nilsson <troglobit@gmail.com>
+ * Copyright (c) 2011-2021  Joachim Wiberg <troglobit@gmail.com>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -15,6 +15,13 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+/**
+ * @file rsync.c
+ * @author Joachim Wiberg
+ * @date 2011-2021
+ * @copyright ISC License
+ */
+
 #include <errno.h>
 #include <fcntl.h>	/* AT_* macros */
 #include <stdlib.h>	/* NULL, free() */
@@ -34,31 +41,31 @@ static int set_mtime(char *fn, struct stat *st);
 
 
 /**
- * rsync - Synchronize contents and optionally remove non-existing backups
+ * Synchronize contents and optionally remove non-existing backups
- * @src: Source directory
+ * @param src     Source directory
- * @dst: Destination directory
+ * @param dst     Destination directory
- * @opt: An option mask of %LITE_FOPT_RSYNC_DELETE, %LITE_FOPT_KEEP_MTIME
+ * @param opt     An option mask of ::LITE_FOPT_RSYNC_DELETE, ::LITE_FOPT_KEEP_MTIME
- * @filter: Optional filtering function for source directory.
+ * @param filter  Optional filtering function for source directory.
  *
- * This is a miniature implementation of the famous rsync for local use only.
+ * This is a miniature implementation of the famous rsync for local use
- * In fact, it is not even a true rsync since it copies all files from @src
+ * only.  In fact, it is not even a true rsync since it copies all files
- * to @dst.  The @delete option is useful for creating backups, when set all
+ * from @p src to @p dst.  The ::LITE_FOPT_RSYNC_DELETE @p opt flag is
- * files removed from src since last backup are pruned from the destination
+ * useful for creating backups, when set all files removed from src
- * (backup) directory.
+ * since last backup are pruned from the destination (backup) directory.
  *
- * The @opt parameter to rsync() is an option mask for the most common
+ * The @p opt parameter to rsync() is an option mask for the most common
- * rsync(1) options.  Previously this argument was called @delete and
+ * rsync(1) options.  Previously this argument was called @p delete and
  * to maintain backwards compatibility the value 1 is reserved:
  *
- * %LITE_FOPT_RSYNC_DELETE: Prune files from @dst that no longer exist in @src.
+ * %LITE_FOPT_RSYNC_DELETE: Prune files from @p dst that no longer exist in @p src.
  * %LITE_FOPT_KEEP_MTIME:   Preserve modification time
  *
- * The filter callback, @filter, if provided, is used to determine what
+ * The filter callback, @p filter, if provided, is used to determine
- * files to include from the source directory when backing up.  If a
+ * what files to include from the source directory when backing up.  If
- * file is to be skipped the callback should simply return zero.
+ * a file is to be skipped the callback should simply return zero.
  *
  * Returns:
- * POSIX OK(0), or non-zero with @errno set on error.
+ * POSIX OK(0), or non-zero with @a errno set on error.
  */
 int rsync(char *src, char *dst, int opt, int (*filter)(const char *file))
 {
@@ -70,7 +77,9 @@ int rsync(char *src, char *dst, int opt, int (*filter)(const char *file))
 	char **files;		/* Array of file names. */
 	struct stat st;
 
-	if (!fisdir(dst))
+	errno = 0;
+
+	if (stat(dst, &st) && fisslashdir(dst))
 		makedir(dst, 0755);
 
 	if (!fisdir(src)) {
@@ -78,9 +87,9 @@ int rsync(char *src, char *dst, int opt, int (*filter)(const char *file))
 			return 1;
 
 		if (copy(src, dst, keep_mtim))
-			result++;
+			return 1;
 
-		return errno;
+		return 0;
 	}
 
 	/* Copy dir as well? */

src/runbg.c

@@ -0,0 +1,93 @@
+/* Run a command in the background: fork() + usleep() + execvp()
+ *
+ * Copyright (c) 2023  Joachim Wiberg <troglobit@gmail.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/**
+ * @file runbg.c
+ * @author Joachim Wiberg
+ * @date 2023
+ * @copyright ISC License
+ */
+
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+/**
+ * Run command in the background
+ * @param cmd    NULL terminated list of command and optional arguments
+ * @param delay  Microseconds after fork() to wait before calling cmd
+ *
+ * This function forks to run the given command @p cmd in the background.
+ * To ensure there are no lingering zombies the function actuall forks
+ * twice, and also calls setsid(), before it calls usleep() with the @p
+ * delay argument.  The command @p cmd is handed over to execvp().
+ *
+ * Since it runs in the background it is not possible to get the return
+ * code of the command.
+ *
+ * @returns on successful (first) fork(), this function returns POSIX
+ * OK(0), otherwise -1 and @a errno is set to indicate the error.
+ */
+int runbg(char *const cmd[], int delay)
+{
+	int pid = fork();
+	int rc;
+
+	if (!pid) {
+		int fd, maxfd;
+
+		if (setsid() == -1)
+			_exit(errno);
+
+		/* reparent to init */
+		pid = fork();
+		if (pid == -1)
+			_exit(errno);
+		if (pid > 0)
+			_exit(0);
+
+		maxfd = sysconf(_SC_OPEN_MAX);
+		if (maxfd == -1)
+			maxfd = 8192;
+		for (fd = 0; fd < maxfd; fd++)
+			close(fd);
+
+		usleep(delay);
+		_exit(execvp(cmd[0], cmd));
+	}
+
+	if (pid == -1)
+		return -1;
+
+	if (waitpid(pid, &rc, 0) == -1)
+		return -1;
+
+	if (WIFEXITED(rc)) {
+		errno = WEXITSTATUS(rc);
+		if (errno)
+			rc = -1;
+		else
+			rc = 0;
+	} else if (WIFSIGNALED(rc)) {
+		errno = EINTR;
+		rc = -1;
+	} else
+		rc = -1;
+
+	return rc;
+}

src/strdupa.h

@@ -24,13 +24,20 @@
  * ==========================================================================
  */
 
+/**
+ * @file strdupa.h
+ * @author William Ahern
+ * @date 2009
+ * @copyright MIT License
+ */
+
 #ifdef __cplusplus
 extern "C"
 {
 #endif
 
-#ifndef LITE_STRDUPA_H
+#ifndef LIBITE_STRDUPA_H
-#define LITE_STRDUPA_H
+#define LIBITE_STRDUPA_H
 
 #if !defined(HAVE_STRDUPA)
 #if defined(strdupa)
@@ -43,6 +50,11 @@ extern "C"
 #include <stddef.h>	/* size_t */
 #include <string.h>	/* memcpy(3) strlen(3) */
 
+/**
+ * Duplicate string on stack.
+ * @param src string to duplicate
+ * @returns the result of memcpy(3)
+ */
 #define strdupa(src) (__extension__ ({			\
 	size_t len_	= strlen(src);			\
 	char *dst_	= __builtin_alloca(len_ + 1);	\
@@ -55,7 +67,7 @@ extern "C"
 #endif /* __GNUC__ */
 #endif /* !HAVE_STRDUPA */
 
-#endif /* LITE_STRDUPA_H */
+#endif /* LIBITE_STRDUPA_H */
 
 #ifdef __cplusplus
 }

src/strlcat.c

@@ -16,16 +16,30 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+/**
+ * @file strlcat.c
+ * @author Todd C. Miller
+ * @date 1998, 2015
+ * @copyright ISC License
+ */
+
 #include <sys/types.h>
 #include <string.h>
 
 #ifndef strlcat
-/*
+/**
- * Appends src to string dst of size dsize (unlike strncat, dsize is the
+ * Safe version of strncat() from OpenBSD
- * full size of dst, not space left).  At most dsize-1 characters
+ * @param dst   Destination string
- * will be copied.  Always NUL terminates (unless dsize <= strlen(dst)).
+ * @param src   Source string
- * Returns strlen(src) + MIN(dsize, strlen(initial dst)).
+ * @param dsize Total maximum size of @p dst
- * If retval >= dsize, truncation occurred.
+ *
+ * Appends @p src to string @p dst of size @p dsize (unlike strncat(),
+ * @p dsize is the full size of @p dst, not space left).  At most
+ * dsize-1 characters will be copied.  Always NUL terminates (unless
+ * dsize <= strlen(dst)).
+ *
+ * @returns strlen(src) + MIN(dsize, strlen(initial dst)).  
+ *          If retval >= dsize, truncation occurred.
  */
 size_t
 strlcat(char *dst, const char *src, size_t dsize)

src/strlcpy.c

@@ -16,14 +16,29 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+/**
+ * @file strlcpy.c
+ * @author Todd C. Miller
+ * @date 1998, 2015
+ * @copyright ISC License
+ */
+
+
 #include <sys/types.h>
 #include <string.h>
 
 #ifndef strlcpy
-/*
+/**
- * Copy string src to buffer dst of size dsize.  At most dsize-1
+ * Safe version of strncpy() from OpenBSD
- * chars will be copied.  Always NUL terminates (unless dsize == 0).
+ * @param dst   Destination string
- * Returns strlen(src); if retval >= dsize, truncation occurred.
+ * @param src   Source string
+ * @param dsize Total maximum size of @p dst
+ *
+ * This function copies string @p src to buffer @p dst of size @p dsize
+ * bytes.  At most dsize-1 chars will be copied.  Always NUL terminates
+ * (unless dsize==0).
+ *
+ * @returns strlen(src); if retval >= dsize, truncation occurred.
  */
 size_t
 strlcpy(char *dst, const char *src, size_t dsize)

src/strlite.h

@@ -1,6 +1,6 @@
 /* Collection of frog DNA
  *
- * Copyright (c) 2008-2020  Joachim Nilsson <troglobit@gmail.com>
+ * Copyright (c) 2008-2021  Joachim Wiberg <troglobit@gmail.com>
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -21,13 +21,20 @@
  * THE SOFTWARE.
  */
 
+/**
+ * @file strlite.h
+ * @author Joachim Wiberg
+ * @date 2008-2021
+ * @copyright MIT License
+ */
+
 #ifdef __cplusplus
 extern "C"
 {
 #endif
 
-#ifndef LITE_STRING_H_
+#ifndef LIBITE_STRING_H_
-#define LITE_STRING_H_
+#define LIBITE_STRING_H_
 
 #include <stdint.h>    /* uint8_t, uint16_t, uint32_t, INT32_MAX, etc. */
 #include <string.h>
@@ -38,6 +45,7 @@ extern "C"
 #include "strnlen.h"
 
 #ifndef min
+/** Geneirc min() macro, if a < b => a, else b */
 #define min(a,b)				\
 	({					\
 		__typeof__ (a) _a = (a);	\
@@ -46,6 +54,7 @@ extern "C"
 	})
 #endif
 #ifndef max
+/** Geneirc max() macro, if a > b => a, else b */
 #define max(a,b)				\
 	({					\
 		__typeof__ (a) _a = (a);	\
@@ -67,7 +76,13 @@ size_t  strlcat    (char *dst, const char *src, size_t siz);
 long long strtonum (const char *numstr, long long minval, long long maxval, const char **errstrp);
 #endif
 
-/* Convert string to natural number (0-2147483647), returns -1 on error. */
+char   *strtrim    (char *str);
+
+/**
+ * Convert string to natural number (0-2147483647)
+ * @param str string to convert to number.
+ * @returns -1 on error.
+ */
 static inline int atonum(const char *str)
 {
 	int val = -1;
@@ -82,13 +97,22 @@ static inline int atonum(const char *str)
 	return val;
 }
 
-/* Validate string, non NULL and not zero length */
+/**
-static inline int string_valid(const char *s)
+ * Validate string, non NULL and not zero length
+ * @param str string to validate
+ * @returns @c TRUE(1) or @c FALSE(0).
+ */
+static inline int string_valid(const char *str)
 {
-   return s && strlen(s);
+   return str && strlen(str);
 }
 
-/* Relaxed comparison, e.g., sys_string_match("small", "smaller") => TRUE */
+/**
+ * Relaxed comparison, e.g., sys_string_match("small", "smaller") => TRUE
+ * @param a first string
+ * @param b second string
+ * @returns @c TRUE(1) or @c FALSE(0).
+ */
 static inline int string_match(const char *a, const char *b)
 {
    size_t min = MIN(strlen(a), strlen(b));
@@ -96,21 +120,30 @@ static inline int string_match(const char *a, const char *b)
    return !strncasecmp(a, b, min);
 }
 
-/* Strict comparison, e.g., sys_string_match("small", "smaller") => FALSE */
+/**
+ * Strict comparison, e.g., sys_string_match("small", "smaller") => FALSE
+ * @param a first string
+ * @param b second string
+ * @returns @c TRUE(1) or @c FALSE(0).
+ */
 static inline int string_compare(const char *a, const char *b)
 {
    return strlen(a) == strlen(b) && !strcmp(a, b);
 }
 
-/* Strict comparison, like sys_string_compare(), but case insensitive,
+/**
+ * Strict comparison, like sys_string_compare(), but case insensitive,
  * e.g., sys_string_match("small", "SmAlL") => TRUE
+ * @param a first string
+ * @param b second string
+ * @returns @c TRUE(1) or @c FALSE(0).
  */
 static inline int string_case_compare(const char *a, const char *b)
 {
-   return strlen (a) == strlen (b) && !strcasecmp (a, b);
+   return strlen(a) == strlen(b) && !strcasecmp(a, b);
 }
 
-#endif /* LITE_STRING_H_ */
+#endif /* LIBITE_STRING_H_ */
 
 #ifdef __cplusplus
 }

src/strmatch.c

@@ -1,6 +1,6 @@
 /* Simple string matcher function, finds partial matches.
  *
- * Copyright (c) 2009-2020  Joachim Nilsson <troglobit@gmail.com>
+ * Copyright (c) 2009-2021  Joachim Wiberg <troglobit@gmail.com>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -15,24 +15,30 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+/**
+ * @file strmatch.c
+ * @author Joachim Wiberg
+ * @date 2009-2021
+ * @copyright ISC License
+ */
+
 #include <errno.h>
 #include <string.h>
 
 
 /**
- * strnmatch - Finds matching strings from a finite list
+ * Finds matching strings from a finite list
- * @str: String to look for
+ * @param str   String to look for
- * @list: List of strings to search.
+ * @param list  List of strings to search.
- * @num: Number of entries in @list.
+ * @param num   Number of entries in @p list.
  *
- * This function searches the @list of strings for @str.  If a (partial) match
+ * This function searches the @p list of strings for @p str.  If a
- * is found it returns the index in the @list.
+ * (partial) match is found it returns the index in the @p list.
  *
- * Very similar in function to strmatch(), but works for sets of strings that
+ * Very similar in function to strmatch(), but works for sets of strings
- * are not %NULL terminated.
+ * that are not @c NUL terminated.
  *
- * Returns:
+ * @returns -1 on error, otherwise the index to the matching string.
- * -1 on error, otherwise the index to the matching string.
  */
 int strnmatch(const char *str, const char **list, size_t num)
 {
@@ -53,18 +59,17 @@ int strnmatch(const char *str, const char **list, size_t num)
 }
 
 /**
- * strmatch - Finds matching strings from a list
+ * Finds matching strings from a list
- * @str: String to look for
+ * @param str   String to look for.
- * @list: %NULL terminated list of strings to search.
+ * @param list  NUL terminated list of strings to search.
  *
- * This function searches the @list of strings for @str.  If a (partial) match
+ * This function searches the @p list of strings for @p str.  If a
- * is found it returns the index in the @list.
+ * (partial) match is found it returns the index in the @p list.
  *
- * Please note, the @list MUST be terminated by a %NULL element.  If that is
+ * Please note, the @p list MUST be terminated by a NUL element.  If
- * not possible for you, we recommend using strnmatch() instead.
+ * that is not possible, we recommend using strnmatch() instead.
  *
- * Returns:
+ * @returns -1 on error, otherwise the index to the matching string.
- * -1 on error, otherwise the index to the matching string.
  */
 int strmatch(const char *str, const char **list)
 {

src/strndupa.h

@@ -24,13 +24,20 @@
  * ==========================================================================
  */
 
+/**
+ * @file strndupa.h
+ * @author William Ahern
+ * @date 2009
+ * @copyright MIT License
+ */
+
 #ifdef __cplusplus
 extern "C"
 {
 #endif
 
-#ifndef LITE_STRNDUPA_H_
+#ifndef LIBITE_STRNDUPA_H_
-#define LITE_STRNDUPA_H_
+#define LIBITE_STRNDUPA_H_
 
 #if !defined(HAVE_STRNDUPA)
 #if defined(strndupa)
@@ -44,6 +51,12 @@ extern "C"
 #include <string.h>	/* memcpy(3) */
 #include "strnlen.h"
 
+/**
+ * Duplicate part of string on stack
+ * @param src string to duplicate
+ * @param lim number of bytes to dupliate
+ * @returns the result of memcpy(3)
+ */
 #define strndupa(src, lim) (__extension__ ({		\
 	size_t len_	= strnlen(src, lim);		\
 	char *dst_	= __builtin_alloca(len_ + 1);	\
@@ -56,7 +69,7 @@ extern "C"
 #endif /* __GNUC__ */
 #endif /* !HAVE_STRNDUPA */
 
-#endif /* GNU_STRING_STRNDUPA_H */
+#endif /* LIBITE_STRNDUPA_H */
 
 #ifdef __cplusplus
 }

src/strnlen.h

@@ -1,6 +1,6 @@
 /* strnlen.h - Re-implementation of GLIBC strnlen()
  *
- * Copyright (c) 2016-2020  Joachim Nilsson <troglobit@gmail.com>
+ * Copyright (c) 2016-2021  Joachim Wiberg <troglobit@gmail.com>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -15,13 +15,20 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+/**
+ * @file strnlen.h
+ * @author Joachim Wiberg
+ * @date 2016-2021
+ * @copyright ISC License
+ */
+
 #ifdef __cplusplus
 extern "C"
 {
 #endif
 
-#ifndef LITE_STRNLEN_H_
+#ifndef LIBITE_STRNLEN_H_
-#define LITE_STRNLEN_H_
+#define LIBITE_STRNLEN_H_
 
 #if !defined(HAVE_STRNLEN)
 #if defined(strnlen)
@@ -32,20 +39,26 @@ extern "C"
 #if !HAVE_STRNLEN
 #include <stddef.h>	/* size_t */
 
-#define strnlen(str, lim) xstrnlen(str, lim)
+#define strnlen(str, lim) xstrnlen(str, lim) /**< Wrapper for xstrnlen() */
 
+/**
+ * Reimplementation of GLIBC strnlen()
+ * @param str string to return length of
+ * @param lim max number of bytes to read
+ * @returns length of @p str in bytes, but at most @lim bytes.
+ */
 static inline size_t xstrnlen(const char *str, size_t lim)
 {
 	size_t i = 0;
 
-	while (str[i] && i < lim)
+	while (i < lim && str[i])
 		i++;
 
 	return i;
 }
 #endif
 
-#endif /* LITE_STRNLEN_H_ */
+#endif /* LIBITE_STRNLEN_H_ */
 
 #ifdef __cplusplus
 }

src/strtonum.c

@@ -17,24 +17,60 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+/**
+ * @file strtonum.c
+ * @author Ted Unangst
+ * @author Todd Miller
+ * @date 2004
+ * @copyright ISC License
+ */
+
 #include <errno.h>
 #include <limits.h>
 #include <stdlib.h>
 
 #ifndef strtonum
-#define	INVALID		1
+#define	INVALID		1		/**< internal */
-#define	TOOSMALL	2
+#define	TOOSMALL	2		/**< internal */
-#define	TOOLARGE	3
+#define	TOOLARGE	3		/**< internal */
 
 #ifndef LLONG_MAX
-# define LLONG_MAX	0x7fffffffffffffffLL
+# define LLONG_MAX	0x7fffffffffffffffLL        /**< internal */
 #endif
 
 #ifndef LLONG_MIN
-# define LLONG_MIN	(-0x7fffffffffffffffLL - 1)
+# define LLONG_MIN	(-0x7fffffffffffffffLL - 1) /**< internal */
 #endif
 
-
+/**
+ * Reliably convert string value to an integer
+ * @param numstr  String to convert to a number
+ * @param minval  Lower bound to check number against
+ * @param maxval  Upper bound to check number against
+ * @param errstrp Pointer to error string
+ *
+ * This function converts the string in @p numstr to a long long value.
+ * The function was designed to facilitate safe, robust programming and
+ * overcome the shortcomings of the atoi(3) and strtol(3) family of
+ * interfaces.
+ *
+ * The string may begin with an arbitrary amount of whitespace (as
+ * determined by isspace(3)) followed by a single optional ‘+’ or ‘-’
+ * sign.
+ *
+ * The remainder of the string is converted to a long long value
+ * according to base 10.
+ *
+ * The value obtained is then checked against the provided @p minval and
+ * @p maxval bounds. If @p errstrp is non-NULL, strtonum() stores an
+ * error string in @p *errstrp indicating the failure.
+ *
+ * @returns The result of the conversion, unless the value would exceed
+ * the provided bounds or is invalid. On error, 0 is returned, @a errno
+ * is set, and @p errstrp points to an error message. @p *errstr* is set
+ * to @c NULL on success; this fact can be used to differentiate a
+ * successful return of 0 from an error.
+ */
 long long
 strtonum(const char *numstr, long long minval, long long maxval,
     const char **errstrp)

src/strtrim.c

@@ -0,0 +1,77 @@
+/* Trim a string from whitespace
+ *
+ * Copyright (c) 2014  Mattias Walström <lazzer@gmail.com>
+ * Copyright (c) 2021  Joachim Wiberg <troglobit@gmail.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/**
+ * @file strtrim.c
+ * @author Mattias Walström
+ * @author Joachim Wiberg
+ * @date 2014,2021
+ * @copyright ISC License
+ */
+
+#include <ctype.h>
+#include <errno.h>
+#include <stdlib.h>
+
+#include "lite.h"
+
+/**
+ * Strip leading and trailing whitespace from a string
+ * @param str  The string to trim
+ *
+ * Trims a string from any leading and trailing white-space, returns the
+ * trimmed result in the same buffer.
+ *
+ * @returns If @p str is a valid, non-NULL string this function returns
+ * the same string stripped from whitespace.  This function only returns
+ * @c NULL if @p str itself is @c NULL.
+ */
+char *strtrim(char *str)
+{
+	char *start, *end;
+
+	if (!str) {
+		errno = EINVAL;
+		return NULL;
+	}
+
+	start = str;
+	while (isspace(*start))
+		start++;
+
+	if (*start == 0) {
+		str[0] = 0;
+		return str;
+	}
+
+	end = start + strlen(start) - 1;
+	while (end > start && isspace(*end))
+		end--;
+	*(++end) = 0;
+
+	memmove(str, start, end - start + 1);
+
+	return str;
+}
+
+/**
+ * Local Variables:
+ *  indent-tabs-mode: t
+ *  c-file-style: "linux"
+ * End:
+ */

src/systemf.c

@@ -1,6 +1,6 @@
 /* Formatted system() which returns actual return status of command
  *
- * Copyright (c) 2020  Joachim Nilsson <troglobit@gmail.com>
+ * Copyright (c) 2021  Joachim Wiberg <troglobit@gmail.com>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -15,18 +15,38 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+/**
+ * @file systemf.c
+ * @author Joachim Wiberg
+ * @date 2021
+ * @copyright ISC License
+ */
+
 #include <errno.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/wait.h>
 
+/**
+ * Like system(), but takes a formatted string as argument.
+ * @param fmt  printf style format list to command to run
+ *
+ * This system() wrapper greatly simplifies operations that usually
+ * consist of composing a command from parts into a dynamic buffer
+ * before calling it.  The return value from system() is also parsed,
+ * checking for proper exit and signals.
+ *
+ * @returns If the command exits normally, the return code of the command
+ * is returned.  Otherwise, if the command is signalled, the return code
+ * is -1 and @a errno is set to @c EINTR.
+ */
 int systemf(const char *fmt, ...)
 {
 	va_list ap;
 	char *cmd;
-	int len, status;
+	int len;
-	int rc = -1;
+	int rc;
 
 	va_start(ap, fmt);
 	len = vsnprintf(NULL, 0, fmt, ap);
@@ -42,23 +62,16 @@ int systemf(const char *fmt, ...)
 	vsnprintf(cmd, len, fmt, ap);
 	va_end(ap);
 
-	status = system(cmd);
+	rc = system(cmd);
+	if (rc == -1)
+		return -1;
 
-	rc = WEXITSTATUS(status);
+	if (WIFEXITED(rc)) {
-	if (!WIFEXITED(status)) {
+		errno = 0;
-		if (WIFSIGNALED(status) &&
+		rc = WEXITSTATUS(rc);
-		    (WTERMSIG(status) == SIGINT ||
+	} else if (WIFSIGNALED(rc)) {
-		     WTERMSIG(status) == SIGQUIT)) {
+		errno = EINTR;
-			errno = EINTR;
+		rc = -1;
-			rc = -1;
-		} else if (!rc) {
-			/*
-			 * Alert callee that command didn't complete
-			 * successfully.  Some programs don't change
-			 * their exit code when signaled.
-			 */
-			rc = 1;
-		}
 	}
 
 	return rc;

src/telnet.c

@@ -1,6 +1,6 @@
 /* Poor mans telnet expect in C.
  *
- * Copyright (c) 2010-2020  Joachim Nilsson <troglobit@gmail.com>
+ * Copyright (c) 2010-2021  Joachim Wiberg <troglobit@gmail.com>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -15,6 +15,13 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+/**
+ * @file telnet.c
+ * @author Joachim Wiberg
+ * @date 2010-2021
+ * @copyright ISC License
+ */
+
 #include <errno.h>
 #include <poll.h>
 #include <unistd.h>
@@ -33,12 +40,19 @@
 # define TELL(fmt, args...)
 #endif
 
+/** @private for internal use only */
 struct sdbuf {
-	int sd;
+	int   sd;
 	char *buf;
-} sdbuf;
+};
 
-/* Open telnet connection to @addr:@port and connect. */
+/**
+ * Open telnet connection to addr:port and connect.
+ * @param addr  Integer encoded IPv4 address in network byte order
+ * @param port  Internet port number in network byte order
+ *
+ * @returns An @ref sdbuf_t socket buffer context.
+ */
 sdbuf_t *telnet_open(int addr, short port)
 {
 	struct sockaddr_in *sin;
@@ -93,6 +107,12 @@ sdbuf_t *telnet_open(int addr, short port)
 	return ctx;
 }
 
+/**
+ * Close a telnet session previously opened with telnet_open()
+ * @param ctx  An @ref sdbuf_t socket buffer context
+ *
+ * @returns Always returns POSIX OK(0).
+ */
 int telnet_close(sdbuf_t *ctx)
 {
 	free(ctx->buf);
@@ -137,20 +157,19 @@ static int wait_substr(sdbuf_t *ctx, char *str)
 }
 
 /**
- * telnet_expect - Poor man's telnet expect
+ * Poor man's telnet expect
- * @ctx:    Telnet session context from telnet_open()
+ * @param ctx     Telnet session context from telnet_open()
- * @script: %NULL terminated list of expect and response strings
+ * @param script  @c NULL terminated list of expect and response strings
- * @output: Optional output from session
+ * @param output  Optional output from session
  *
- * Issues @script sequence on telnet session specified in @ctx, with
+ * Issues @p script sequence on telnet session specified in @p ctx, with
- * optional @output from session.
+ * optional @p output from session.
  *
- * The @script consists of strings of expect and response pairs.  For
+ * The @p script consists of strings of expect and response pairs.  For
  * example, expect "ogin: " followed by response "root\n", expect
- * "assword: "with response "secret\n", concluded by %NULL.
+ * "assword: "with response "secret\n", concluded by @c NULL.
  *
- * Returns:
+ * @returns POSIX OK(0) or non-zero on error.
- * POSIX OK(0) or non-zero on error.
  */
 int telnet_expect(sdbuf_t *ctx, char *script[], FILE *output)
 {
@@ -258,20 +277,20 @@ int telnet_expect(sdbuf_t *ctx, char *script[], FILE *output)
 }
 
 /**
- * telnet_session - Very simple expect-like implementation for telnet.
+ * Very simple expect-like implementation for telnet.
- * @addr:   Must be in network byte order, use htonl().
+ * @param addr    Integer encoded IPv4 address, in network byte order, use htonl().
- * @port:   IP port to connect to, use htons().
+ * @param port    Internet port to connect to, in network byte order, use htons().
- * @script: Expect like script of paired 'expect', 'response' strings.
+ * @param script  Expect like script of paired 'expect', 'response' strings.
- * @output: A &FILE pointer to a tmpfile() for output from the last command.
+ * @param output  A FILE pointer to a tempfile() for output from the last command.
  *
  * This is a very simple expect-like implementation for querying and
  * operating daemons remotely over telnet.
  *
- * The @script is a query-response type of list of strings leading up to
+ * The @p script is a query-response type of list of strings leading up
- * a final command, which output is then written to the given @output file.
+ * to a final command, which output is then written to the given @p
+ * output file.
  *
- * Returns:
+ * @returns POSIX OK(0), or non-zero with @a errno set on error.
- * POSIX OK(0), or non-zero with errno set on error.
  */
 int telnet_session(int addr, short port, char *script[], FILE *output)
 {

src/tempfile.c

@@ -1,6 +1,6 @@
 /* A secure tmpfile() replacement.
  *
- * Copyright (c) 2015-2020  Joachim Nilsson <troglobit@gmail.com>
+ * Copyright (c) 2015-2021  Joachim Wiberg <troglobit@gmail.com>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -15,23 +15,46 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+/**
+ * @file tempfile.c
+ * @author Joachim Wiberg
+ * @date 2015-2021
+ * @copyright ISC License
+ */
+
+#include <errno.h>
 #include <paths.h>
 #include <fcntl.h>		/* O_TMPFILE requires -D_GNU_SOURCE */
 #include <stdio.h>		/* fdopen() */
+#include <stdlib.h>		/* mkostemp() */
 #include <sys/stat.h>		/* umask() */
 
+static FILE *fallback(void)
+{
+	char nm[15] = _PATH_TMP "XXXXXXXX";
+	int fd;
+
+	fd = mkostemp(nm, O_CLOEXEC);
+	if (-1 == fd)
+		return NULL;
+
+	return fdopen(fd, "w+");
+}
+
 /**
- * tempfile - A secure tmpfile() replacement
+ * A secure tmpfile() replacement
  *
  * This is the secure replacement for tmpfile() that does not exist in
- * GLIBC.  The function uses the Linux specific %O_TMPFILE and %O_EXCL
+ * GLIBC.  It uses the Linux specific @c O_TMPFILE and @c O_EXCL to hide
- * for security.  When the %FILE is fclose()'ed the file contents is
+ * the filename.  When the @c FILE is fclose()'ed, the file contents is
- * lost.  The file is hidden in the %_PATH_TMP directory on the system.
+ * lost.  The file is hidden in the @c _PATH_TMP ("/tmp") directory in
+ * the system.
  *
- * This function requires Linux 3.11, or later, due to %O_TMPFILE.
+ * This function requires Linux 3.11, or later, due to @c O_TMPFILE.
+ * Not all file systems support hidden inodes, in which case this
+ * function defaults to call tmpfile() as a fallback.
  *
- * Returns:
+ * @returns An open @c FILE pointer, or @c NULL on error.
- * An open %FILE pointer, or %NULL on error.
  */
 FILE *tempfile(void)
 {
@@ -42,12 +65,16 @@ FILE *tempfile(void)
 	oldmask = umask(0077);
 	fd = open(_PATH_TMP, O_TMPFILE | O_RDWR | O_EXCL | O_CLOEXEC, S_IRUSR | S_IWUSR);
 	umask(oldmask);
-	if (-1 == fd)
+	if (-1 == fd) {
+		if (errno == EOPNOTSUPP)
+			return fallback();
+
 		return NULL;
+	}
 
 	return fdopen(fd, "w+");
 #else
-	return tmpfile(); /* Fallback on older GLIBC/Linux and actual UNIX systems */
+	return fallback();
 #endif
 }
 

src/touchf.c

@@ -0,0 +1,72 @@
+/* Formatted touch()
+ *
+ * Copyright (c) 2021  Joachim Wiberg <troglobit@gmail.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/**
+ * @file touchf.c
+ * @author Joachim Wiberg
+ * @date 2021
+ * @copyright ISC License
+ */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "lite.h"
+
+/**
+ * Like touch() but with formatted string support
+ * @param fmt  Formatted string to be composed into a pathname
+ *
+ * This is a wrapper for the touch() function in lite.h, lessening the
+ * burden of having to compose the filename from parts in a seprate
+ * buffer.
+ *
+ * @returns Upon successful completion touchf() returns POSIX OK(0),
+ * otherwise, -1 is returned and @a errno is set to indicate error.
+ */
+int touchf(const char *fmt, ...)
+{
+	va_list ap;
+	char *file;
+	int len;
+
+	va_start(ap, fmt);
+	len = vsnprintf(NULL, 0, fmt, ap);
+	va_end(ap);
+
+	file = alloca(len + 1);
+	if (!file) {
+		errno = ENOMEM;
+		return -1;
+	}
+
+	va_start(ap, fmt);
+	vsnprintf(file, len + 1, fmt, ap);
+	va_end(ap);
+
+	return touch(file);
+}
+
+/**
+ * Local Variables:
+ *  indent-tabs-mode: t
+ *  c-file-style: "linux"
+ * End:
+ */

src/tree.h

@@ -32,7 +32,12 @@ extern "C"
 #ifndef	_SYS_TREE_H_
 #define	_SYS_TREE_H_
 
-/*
+/**
+ * @file tree.h
+ * @author Niels Provos
+ * @date 2002
+ * @copyright 2-clause BSD License
+ *
  * This file defines data structures for different types of trees:
  * splay trees and red-black trees.
  *

src/truncatef.c

@@ -1,6 +1,6 @@
 /* Formatted truncate()
  *
- * Copyright (c) 2020  Joachim Nilsson <troglobit@gmail.com>
+ * Copyright (c) 2021  Joachim Wiberg <troglobit@gmail.com>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -15,6 +15,13 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+/**
+ * @file truncatef.c
+ * @author Joachim Wiberg
+ * @date 2021
+ * @copyright ISC License
+ */
+
 #include <errno.h>
 #include <stdio.h>
 #include <stdarg.h>
@@ -22,17 +29,15 @@
 #include <unistd.h>
 
 /**
- * truncatef - Truncate a file based on the formatted string
+ * Truncate a file based on the formatted string
- * @length: Size in bytes to truncate file to, zero to empty it
+ * @param length  Size in bytes to truncate file to, zero to empty it
- * @fmt:  Formatted string to be composed into a pathname
+ * @param fmt     Formatted string to be composed into a pathname
  *
  * This is an extension to the truncate() family, lessening the burden
  * of having to compose the filename from parts in a seprate buffer.
  *
- * Returns:
+ * @returns Upon successful completion truncate() returns POSIX OK(0),
-
+ * otherwise, -1 is returned and @a errno is set to indicate error.
- * Upon successful completion truncate() returns POSIX OK(0), otherwise,
- * -1 is returned and errno is set to indicate the error.
  */
 int truncatef(off_t length, const char *fmt, ...)
 {

src/which.c

@@ -1,6 +1,6 @@
 /* C implementation of UNIX which(1)
  *
- * Copyright (c) 2017-2020  Joachim Nilsson <troglobit@gmail.com>
+ * Copyright (c) 2017-2021  Joachim Wiberg <troglobit@gmail.com>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -15,6 +15,13 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+/**
+ * @file which.c
+ * @author Joachim Wiberg
+ * @date 2017-2021
+ * @copyright ISC License
+ */
+
 #include <ctype.h>
 #include <errno.h>
 #include <stdio.h>		/* snprintf() */
@@ -38,13 +45,17 @@ static char *strip_args(char *path)
 	return path;
 }
 
-/*
+/**
- * Like which(1), returns a malloc'ed path to cmd on success, or NULL
+ * Like which(1), or `command -v foo`
+ * @param cmd  Command to look for in $PATH
+ *
+ * @returns A malloc()'ed path to @a cmd on success, or @c NULL.
  */
 char *which(const char *cmd)
 {
+	char *ptr, *env, *path = NULL;
 	size_t pathlen = 0;
-	char *ptr, *tok, *env, *path = NULL;
+	const char *tok;
 
 	if (!cmd) {
 		errno = EINVAL;
@@ -59,9 +70,7 @@ char *which(const char *cmd)
 		if (!access(path, X_OK))
 			return path;
 
-		if (path)
+		free(path);
-			free(path);
-
 		return NULL;
 	}
 
@@ -78,11 +87,15 @@ char *which(const char *cmd)
 		size_t len = strlen(tok) + strlen(cmd) + 2;
 
 		if (pathlen < len) {
-			path = realloc(path, len);
+			char *tmp = realloc(path, len);
-			if (!path) {
+
+			if (!tmp) {
+				free(path);
 				free(env);
 				return NULL;
 			}
+
+			path = tmp;
 			pathlen = len;
 		}
 
@@ -103,8 +116,11 @@ char *which(const char *cmd)
 	return NULL;
 }
 
-/*
+/**
- * Like which(), above, but only answers TRUE(1)/FALSE(0)
+ * Predicate variant of which()
+ * @param cmd  Command to look for in $PATH
+ *
+ * @returns @c TRUE(1) or @c FALSE(0) if @p cmd exists in $PATH.
  */
 int whichp(const char *cmd)
 {

src/yorn.c

@@ -1,6 +1,6 @@
 /* Safe yes-or-no with prompt
  *
- * Copyright (c) 2009-2020  Joachim Nilsson <troglobit@gmail.com>
+ * Copyright (c) 2009-2021  Joachim Wiberg <troglobit@gmail.com>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -15,6 +15,13 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+/**
+ * @file yorn.c
+ * @author Joachim Wiberg
+ * @date 2009-2021
+ * @copyright ISC License
+ */
+
 #include <stdio.h>
 #include <stdio_ext.h>		/* __fpurge() */
 #include <stdarg.h>
@@ -56,14 +63,13 @@ static char rawgetch(void)
 }
 
 /**
- * yorn - Pose a a Yes or No question and return answer
+ * Pose a a Yes or No question and return answer
- * @fmt: Standard printf() style argument(s).
+ * @param fmt  Standard printf() style argument(s).
  *
  * This function prints the given question on screen, waits for user
  * input in the form of yes or no.
  *
- * Returns:
+ * @returns TRUE(1) or FALSE(0).  True if the answer is yes.
- * True(1) or False(0).  True if the answer is yes.
  */
 int yorn(const char *fmt, ...)
 {

test/.gitignore

@@ -15,6 +15,7 @@
 /printhdr
 /progress
 /rsync
+/runbg
 /str
 /strmatch
 /systemf

test/Makefile.am

@@ -1,8 +1,14 @@
-EXTRA_DIST      = check.h \
+# Ignore warnings about unused result, in e.g. write()
-  data/fexist/dir/.placeholder data/fexist/executable data/fexist/link \
+AM_CFLAGS       = -W -Wall -Wextra -Wno-unused-result
-  data/fexist/regular data/lfile/fstab data/lfile/group data/lfile/passwd \
+AM_CPPFLAGS     = -D_GNU_SOURCE
-  data/lfile/protocols data/lfile/services data/which/executable \
+AM_LDFLAGS      = -L../src/ ../src/libite.la -static
-  data/which/executable-link data/which/regular
+
+EXTRA_DIST      = check.h data/fexist/dir/.placeholder data/fexist/executable
+EXTRA_DIST     += data/fexist/link data/fexist/regular data/lfile/fstab
+EXTRA_DIST     += data/lfile/group data/lfile/passwd data/lfile/protocols
+EXTRA_DIST     += data/lfile/services data/which/executable
+EXTRA_DIST     += data/which/executable-link data/which/regular
+
 CLEANFILES      = *~ *.trs *.log
 
 TESTS_ENVIRONMENT = ([ -d data ] || ln -sf $(srcdir)/data) &&
@@ -24,6 +30,7 @@ TESTS          += pidfile
 TESTS          += printhdr
 TESTS          += progress
 TESTS          += rsync
+TESTS          += runbg
 TESTS          += str
 TESTS          += strmatch
 TESTS          += systemf
@@ -33,9 +40,3 @@ TESTS          += which
 TESTS          += yorn
 
 check_PROGRAMS  = $(TESTS)
-
-# Ignore warnings about unused result, in e.g. write()
-CFLAGS         += -Wno-unused-result
-CPPFLAGS       += -D_GNU_SOURCE
-LDADD           = -L../src/ ../src/libite.la
-LDFLAGS        += -static

test/check.h

@@ -1,5 +1,5 @@
-#ifndef LITE_TESTS_CHECK_H_
+#ifndef LIBLITE_TESTS_CHECK_H_
-#define LITE_TESTS_CHECK_H_
+#define LIBLITE_TESTS_CHECK_H_
 
 #include <stdarg.h>
 #include <stdlib.h>
@@ -78,4 +78,4 @@ static inline char *timespec2str(struct timespec *ts, char *buf, size_t len)
 	return buf;
 }
 
-#endif /* LITE_TESTS_CHECK_H_ */
+#endif /* LIBLITE_TESTS_CHECK_H_ */

test/copyfile.c

@@ -0,0 +1,131 @@
+#include <err.h>
+#include <errno.h>
+#include "check.h"
+
+#define ERR(fmt, args...)  { printf(fmt ": %s\n", ##args, strerror(errno));  rc = 1; }
+#define ERRX(fmt, args...) { printf(fmt "\n", ##args); rc = 1; }
+
+static char *files[] = {
+	"/etc/passwd", "/tmp/mypwd", "/tmp/mypwd",
+	"/etc/passwd", "/tmp/",      "/tmp/passwd",
+	"/etc/passwd", "/tmp",       "/tmp/passwd",
+	NULL
+};
+
+static int one_sz(const char *src, const char *dst, int sz)
+{
+	struct stat st;
+	ssize_t len;
+	int rc = 0;
+
+	len = copyfile(src, dst, sz, 0);
+	if (!len) {
+		ERR("failed copying any bytes from %s", src);
+	} else {
+		if (stat(dst, &st))
+			ERR("copied but cannot find destination %s", dst);
+
+		if (st.st_size != sz)
+			ERR("file only %ld bytes, expected %d", st.st_size, sz);
+
+		if (len != st.st_size)
+			ERRX("copied expected data %d, but copyfile() says %ld", sz, len);
+	}
+
+	return rc;
+}
+
+static int _sz()
+{
+	const int sz = 32768;
+
+	return test(one_sz("/dev/zero", "/tmp/zeroes", sz), "copyfile(/dev/zero, %d)", sz);
+}
+
+static int fcopyfile_one(const char *src, const char *dst, const char *expected)
+{
+	FILE *from, *to;
+	int rc;
+
+	from = fopen(src, "r");
+	to   = fopen(dst, "w");
+
+	rc = fcopyfile(from, to);
+
+	if (from)
+		fclose(from);
+	if (to)
+		fclose(to);
+
+	if (rc) {
+		if (!src || !dst)
+			rc = 0; /* expected */
+		else if (fisdir(dst))
+			rc = 0;	/* expected */
+	} else {
+		if (fexist(expected)) {
+			if (systemf("diff -q %s %s", src, expected))
+				rc = 1;
+		} else
+			ERR("cannot find %s", expected);
+	}       
+
+	erase(expected);
+
+	return rc;
+}
+
+static int _fcopyfile()
+{
+	int i, rc = 0;
+
+	for (i = 0; files[i]; i += 3) {
+		char *src = files[i];
+		char *dst = files[i + 1];
+		char *res = files[i + 2];
+
+		rc += test(fcopyfile_one(src, dst, res), "fcopyfile(%s, %s)", src, dst);
+	}
+
+	return rc;
+}
+
+/* only checks success, correct file size verified by _sz() */
+static int copyfile_one(const char *src, const char *dst, const char *expected)
+{
+	int rc;
+
+	rc = copyfile(src, dst, 0, 0);
+	if (!rc)
+		rc = 1;
+	else if (!fexist(expected))
+		rc = 1;
+	else
+		rc = 0;
+
+	erase(expected);
+
+	return rc;
+}
+
+static int _copyfile()
+{
+	int i, rc = 0;
+
+	for (i = 0; files[i]; i += 3) {
+		char *src = files[i];
+		char *dst = files[i + 1];
+		char *res = files[i + 2];
+
+		rc += test(copyfile_one(src, dst, res), "copyfile(%s, %s)", src, dst);
+	}
+
+	return rc;
+}
+
+int main(void)
+{
+	return	_fcopyfile() ||
+		_copyfile()  ||
+		_sz();
+}

test/pidfile.c

@@ -17,12 +17,16 @@ static struct stat before, after;
 
 static void sigterm_handler(int signo)
 {
+	(void)signo;
+
 	PRINT("Exiting ...\n");
 	remove(PIDFILE);
 }
 
 static void sigalrm_handler(int signo)
 {
+	(void)signo;
+
 	PRINT("Calling pidfile(%s)\n", pidfile_arg ?: "NULL");
 	if (pidfile(pidfile_arg))
 		err(1, "failed creating1 %s", pidfile_arg);
@@ -37,7 +41,7 @@ static int mtime()
 	char buf[80];
 
 	/* Must sleep a while here otherwise we execute too fast => no mtime change :-( */
-	usleep(10000);
+	sleep(2);
 
 	PRINT("Calling pidfile() again to update mtime ...\n");
 	if (pidfile(pidfile_arg))