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| 1 /* | |
| 2 * Copyright (c) 2007 Mans Rullgard | |
| 3 * | |
| 4 * This file is part of FFmpeg. | |
| 5 * | |
| 6 * FFmpeg is free software; you can redistribute it and/or | |
| 7 * modify it under the terms of the GNU Lesser General Public | |
| 8 * License as published by the Free Software Foundation; either | |
| 9 * version 2.1 of the License, or (at your option) any later version. | |
| 10 * | |
| 11 * FFmpeg is distributed in the hope that it will be useful, | |
| 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 * Lesser General Public License for more details. | |
| 15 * | |
| 16 * You should have received a copy of the GNU Lesser General Public | |
| 17 * License along with FFmpeg; if not, write to the Free Software | |
| 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 19 */ | |
| 20 | |
| 21 #ifndef AVUTIL_AVSTRING_H | |
| 22 #define AVUTIL_AVSTRING_H | |
| 23 | |
| 24 #include <stddef.h> | |
| 25 | |
| 26 /** | |
| 27 * Return non-zero if pfx is a prefix of str. If it is, *ptr is set to | |
| 28 * the address of the first character in str after the prefix. | |
| 29 * | |
| 30 * @param str input string | |
| 31 * @param pfx prefix to test | |
| 32 * @param ptr updated if the prefix is matched inside str | |
| 33 * @return non-zero if the prefix matches, zero otherwise | |
| 34 */ | |
| 35 int av_strstart(const char *str, const char *pfx, const char **ptr); | |
| 36 | |
| 37 /** | |
| 38 * Return non-zero if pfx is a prefix of str independent of case. If | |
| 39 * it is, *ptr is set to the address of the first character in str | |
| 40 * after the prefix. | |
| 41 * | |
| 42 * @param str input string | |
| 43 * @param pfx prefix to test | |
| 44 * @param ptr updated if the prefix is matched inside str | |
| 45 * @return non-zero if the prefix matches, zero otherwise | |
| 46 */ | |
| 47 int av_stristart(const char *str, const char *pfx, const char **ptr); | |
| 48 | |
| 49 /** | |
| 50 * Copy the string src to dst, but no more than size - 1 bytes, and | |
| 51 * null-terminate dst. | |
| 52 * | |
| 53 * This function is the same as BSD strlcpy(). | |
| 54 * | |
| 55 * @param dst destination buffer | |
| 56 * @param src source string | |
| 57 * @param size size of destination buffer | |
| 58 * @return the length of src | |
| 59 */ | |
| 60 size_t av_strlcpy(char *dst, const char *src, size_t size); | |
| 61 | |
| 62 /** | |
| 63 * Append the string src to the string dst, but to a total length of | |
| 64 * no more than size - 1 bytes, and null-terminate dst. | |
| 65 * | |
| 66 * This function is similar to BSD strlcat(), but differs when | |
| 67 * size <= strlen(dst). | |
| 68 * | |
| 69 * @param dst destination buffer | |
| 70 * @param src source string | |
| 71 * @param size size of destination buffer | |
| 72 * @return the total length of src and dst | |
| 73 */ | |
| 74 size_t av_strlcat(char *dst, const char *src, size_t size); | |
| 75 | |
| 76 /** | |
| 77 * Append output to a string, according to a format. Never write out of | |
| 78 * the destination buffer, and and always put a terminating 0 within | |
| 79 * the buffer. | |
| 80 * @param dst destination buffer (string to which the output is | |
| 81 * appended) | |
| 82 * @param size total size of the destination buffer | |
| 83 * @param fmt printf-compatible format string, specifying how the | |
| 84 * following parameters are used | |
| 85 * @return the length of the string that would have been generated | |
| 86 * if enough space had been available | |
| 87 */ | |
| 88 size_t av_strlcatf(char *dst, size_t size, const char *fmt, ...); | |
| 89 | |
| 90 #endif /* AVUTIL_AVSTRING_H */ | |
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