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Joachim Nilsson
b6a9ed3c6d
These two functions look for a string in a (terminate) list of strings and returns the index to that string, or -1 if not found or error. Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
90 lines
2.3 KiB
C
90 lines
2.3 KiB
C
/* Simple string matcher function, finds partial matches.
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*
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* Copyright (c) 2009-2018 Joachim Nilsson <troglobit@gmail.com>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <errno.h>
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#include <string.h>
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/**
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* strnmatch - Finds matching strings from a finite list
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* @str: String to look for
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* @list: List of strings to search.
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* @num: Number of entries in @list.
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*
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* This function searches the @list of strings for @str. If a (partial) match
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* is found it returns the index in the @list.
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*
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* Very similar in function to strmatch(), but works for sets of strings that
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* are not %NULL terminated.
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*
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* Returns:
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* -1 on error, otherwise the index to the matching string.
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*/
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int strnmatch(const char *str, const char **list, size_t num)
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{
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size_t i;
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if (!str || !list) {
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errno = EINVAL;
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return -1;
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}
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for (i = 0; i < num; i++) {
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if (!strncasecmp (str, list[i], strlen (str)))
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return i;
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}
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errno = ENOENT;
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return -1;
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}
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/**
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* strmatch - Finds matching strings from a list
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* @str: String to look for
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* @list: %NULL terminated list of strings to search.
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*
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* This function searches the @list of strings for @str. If a (partial) match
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* is found it returns the index in the @list.
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*
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* Please note, the @list MUST be terminated by a %NULL element. If that is
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* not possible for you, we recommend using strnmatch() instead.
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*
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* Returns:
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* -1 on error, otherwise the index to the matching string.
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*/
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int strmatch(const char *str, const char **list)
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{
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size_t i;
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if (!list) {
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errno = EINVAL;
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return -1;
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}
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for (i = 0; list[i]; i++)
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;
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return strnmatch(str, list, i);
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}
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/**
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* Local Variables:
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* indent-tabs-mode: t
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* c-file-style: "linux"
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* End:
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*/
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