mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-11 09:35:22 +00:00
134 lines
4.6 KiB
C
134 lines
4.6 KiB
C
/*
|
|
* Copyright (c) 2007 Mans Rullgard
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVUTIL_AVSTRING_H
|
|
#define AVUTIL_AVSTRING_H
|
|
|
|
#include <stddef.h>
|
|
|
|
/**
|
|
* Return non-zero if pfx is a prefix of str. If it is, *ptr is set to
|
|
* the address of the first character in str after the prefix.
|
|
*
|
|
* @param str input string
|
|
* @param pfx prefix to test
|
|
* @param ptr updated if the prefix is matched inside str
|
|
* @return non-zero if the prefix matches, zero otherwise
|
|
*/
|
|
int av_strstart(const char *str, const char *pfx, const char **ptr);
|
|
|
|
/**
|
|
* Return non-zero if pfx is a prefix of str independent of case. If
|
|
* it is, *ptr is set to the address of the first character in str
|
|
* after the prefix.
|
|
*
|
|
* @param str input string
|
|
* @param pfx prefix to test
|
|
* @param ptr updated if the prefix is matched inside str
|
|
* @return non-zero if the prefix matches, zero otherwise
|
|
*/
|
|
int av_stristart(const char *str, const char *pfx, const char **ptr);
|
|
|
|
/**
|
|
* Locate the first case-independent occurrence in the string haystack
|
|
* of the string needle. A zero-length string needle is considered to
|
|
* match at the start of haystack.
|
|
*
|
|
* This function is a case-insensitive version of the standard strstr().
|
|
*
|
|
* @param haystack string to search in
|
|
* @param needle string to search for
|
|
* @return pointer to the located match within haystack
|
|
* or a null pointer if no match
|
|
*/
|
|
char *av_stristr(const char *haystack, const char *needle);
|
|
|
|
/**
|
|
* Copy the string src to dst, but no more than size - 1 bytes, and
|
|
* null-terminate dst.
|
|
*
|
|
* This function is the same as BSD strlcpy().
|
|
*
|
|
* @param dst destination buffer
|
|
* @param src source string
|
|
* @param size size of destination buffer
|
|
* @return the length of src
|
|
*
|
|
* WARNING: since the return value is the length of src, src absolutely
|
|
* _must_ be a properly 0-terminated string, otherwise this will read beyond
|
|
* the end of the buffer and possibly crash.
|
|
*/
|
|
size_t av_strlcpy(char *dst, const char *src, size_t size);
|
|
|
|
/**
|
|
* Append the string src to the string dst, but to a total length of
|
|
* no more than size - 1 bytes, and null-terminate dst.
|
|
*
|
|
* This function is similar to BSD strlcat(), but differs when
|
|
* size <= strlen(dst).
|
|
*
|
|
* @param dst destination buffer
|
|
* @param src source string
|
|
* @param size size of destination buffer
|
|
* @return the total length of src and dst
|
|
*
|
|
* WARNING: since the return value use the length of src and dst, these absolutely
|
|
* _must_ be a properly 0-terminated strings, otherwise this will read beyond
|
|
* the end of the buffer and possibly crash.
|
|
*/
|
|
size_t av_strlcat(char *dst, const char *src, size_t size);
|
|
|
|
/**
|
|
* Append output to a string, according to a format. Never write out of
|
|
* the destination buffer, and always put a terminating 0 within
|
|
* the buffer.
|
|
* @param dst destination buffer (string to which the output is
|
|
* appended)
|
|
* @param size total size of the destination buffer
|
|
* @param fmt printf-compatible format string, specifying how the
|
|
* following parameters are used
|
|
* @return the length of the string that would have been generated
|
|
* if enough space had been available
|
|
*/
|
|
size_t av_strlcatf(char *dst, size_t size, const char *fmt, ...);
|
|
|
|
/**
|
|
* Convert a number to a av_malloced string.
|
|
*/
|
|
char *av_d2str(double d);
|
|
|
|
/**
|
|
* Unescape the given string until a non escaped terminating char,
|
|
* and return the token corresponding to the unescaped string.
|
|
*
|
|
* The normal \ and ' escaping is supported. Leading and trailing
|
|
* whitespaces are removed, unless they are escaped with '\' or are
|
|
* enclosed between ''.
|
|
*
|
|
* @param buf the buffer to parse, buf will be updated to point to the
|
|
* terminating char
|
|
* @param term a 0-terminated list of terminating chars
|
|
* @return the malloced unescaped string, which must be av_freed by
|
|
* the user, NULL in case of allocation failure
|
|
*/
|
|
char *av_get_token(const char **buf, const char *term);
|
|
|
|
#endif /* AVUTIL_AVSTRING_H */
|