| /* |
| * 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 */ |