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conio.h: Move initscr() function to conio.c

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Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This commit is contained in:
Joachim Nilsson
2017-11-22 10:28:07 +01:00
parent 94800e7d5c
commit bbb951dc23
3 changed files with 84 additions and 59 deletions
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src/Makefile.am
+1 -1
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@@ -6,7 +6,7 @@ libite_la_LDFLAGS = $(AM_LDFLAGS) -version-info 4:1:0
libite_la_SOURCES = chomp.c copyfile.c dir.c fexist.c fisdir.c fmode.c fparseln.c \
fsendfile.c ifconfig.c lfile.c makepath.c pidfile.c pidfilefn.c \
progress.c reallocarray.c rsync.c strlcpy.c strlcat.c strtonum.c \
tempfile.c tree.c which.c
tempfile.c tree.c which.c conio.c
## Distribute these header files in the <lite/...> name space
pkgincludedir = $(includedir)/lite
src/conio.c
+83
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@@ -0,0 +1,83 @@
/* A conio.h like implementation for VTANSI displays.
*
* Copyright (c) 2009-2017 Joachim Nilsson <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.
*/
#include <poll.h>
#include <stdio.h>
#include <termios.h>
#include <unistd.h>
void initscr(int *row, int *col)
{
if (!row || !col)
return;
#if defined(TCSANOW) && defined(POLLIN)
struct termios tc, saved;
struct pollfd fd = { STDIN_FILENO, POLLIN, 0 };
if (!isatty(STDIN_FILENO) || !isatty(STDOUT_FILENO)) {
*row = 24;
*col = 80;
return;
}
/* Disable echo to terminal while probing */
tcgetattr(STDOUT_FILENO, &tc);
saved = tc;
tc.c_cflag |= (CLOCAL | CREAD);
tc.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);
tcsetattr(STDOUT_FILENO, TCSANOW, &tc);
/*
* Save cursor pos+attr
* Diable top+bottom margins
* Set cursor at the far bottom,right pos
* Query term for resulting pos
*/
fprintf(stdout, "\e7" "\e[r" "\e[999;999H" "\e[6n");
fflush(stdout);
/*
* Wait here for terminal to echo back \e[row,lineR ...
*/
if (poll(&fd, 1, 300) <= 0 || scanf("\e[%d;%dR", row, col) != 2) {
*row = 24;
*col = 80;
}
/*
* Restore above saved cursor pos+attr
*/
fprintf(stdout, "\e8");
fflush(stdout);
/* Restore terminal */
tcsetattr(STDOUT_FILENO, TCSANOW, &saved);
return;
#else
*row = 24;
*col = 80;
#endif
}
/**
* Local Variables:
* indent-tabs-mode: t
* c-file-style: "linux"
* End:
*/
src/conio.h
-58
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@@ -19,8 +19,6 @@
#define CONIO_H_
#include <stdio.h>
#include <termios.h>
#include <unistd.h>
/* Attributes */
#define RESETATTR 0
@@ -86,62 +84,6 @@ static inline void printheader(FILE *fp, const char *line, int nl)
line, SCREEN_WIDTH - (int)strlen(line), "");
}
/* Requries: #inlude <termios.h> and #include <poll.h> */
static inline void initscr(int *row, int *col)
{
if (!row || !col)
return;
#if defined(TCSANOW) && defined(POLLIN)
struct termios tc, saved;
struct pollfd fd = { STDIN_FILENO, POLLIN, 0 };
if (!isatty(STDIN_FILENO) || !isatty(STDOUT_FILENO)) {
*row = 24;
*col = 80;
return;
}
/* Disable echo to terminal while probing */
tcgetattr(STDOUT_FILENO, &tc);
saved = tc;
tc.c_cflag |= (CLOCAL | CREAD);
tc.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);
tcsetattr(STDOUT_FILENO, TCSANOW, &tc);
/*
* Save cursor pos+attr
* Diable top+bottom margins
* Set cursor at the far bottom,right pos
* Query term for resulting pos
*/
fprintf(stdout, "\e7" "\e[r" "\e[999;999H" "\e[6n");
fflush(stdout);
/*
* Wait here for terminal to echo back \e[row,lineR ...
*/
if (poll(&fd, 1, 300) <= 0 || scanf("\e[%d;%dR", row, col) != 2) {
*row = 24;
*col = 80;
}
/*
* Restore above saved cursor pos+attr
*/
fprintf(stdout, "\e8");
fflush(stdout);
/* Restore terminal */
tcsetattr(STDOUT_FILENO, TCSANOW, &saved);
return;
#else
*row = 24;
*col = 80;
#endif
}
#endif /* CONIO_H_ */
/**