2 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
3 * Copyright (c) 2007 Mans Rullgard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
29 int av_strstart(const char *str, const char *pfx, const char **ptr)
31 while (*pfx && *pfx == *str) {
40 int av_stristart(const char *str, const char *pfx, const char **ptr)
42 while (*pfx && toupper((unsigned)*pfx) == toupper((unsigned)*str)) {
51 char *av_stristr(const char *s1, const char *s2)
54 return (char*)(intptr_t)s1;
57 if (av_stristart(s1, s2, NULL))
58 return (char*)(intptr_t)s1;
64 size_t av_strlcpy(char *dst, const char *src, size_t size)
67 while (++len < size && *src)
71 return len + strlen(src) - 1;
74 size_t av_strlcat(char *dst, const char *src, size_t size)
76 size_t len = strlen(dst);
78 return len + strlen(src);
79 return len + av_strlcpy(dst + len, src, size - len);
82 size_t av_strlcatf(char *dst, size_t size, const char *fmt, ...)
84 int len = strlen(dst);
88 len += vsnprintf(dst + len, size > len ? size - len : 0, fmt, vl);
94 char *av_asprintf(const char *fmt, ...)
101 len = vsnprintf(NULL, 0, fmt, va);
106 p = av_malloc(len + 1);
111 len = vsnprintf(p, len + 1, fmt, va);
120 char *av_d2str(double d)
122 char *str= av_malloc(16);
123 if(str) snprintf(str, 16, "%f", d);
127 #define WHITESPACES " \n\t"
129 char *av_get_token(const char **buf, const char *term)
131 char *out = av_malloc(strlen(*buf) + 1);
132 char *ret= out, *end= out;
133 const char *p = *buf;
134 if (!out) return NULL;
135 p += strspn(p, WHITESPACES);
137 while(*p && !strspn(p, term)) {
143 while(*p && *p != '\'')
156 }while(out >= end && strspn(out, WHITESPACES));
163 char *av_strtok(char *s, const char *delim, char **saveptr)
167 if (!s && !(s = *saveptr))
170 /* skip leading delimiters */
171 s += strspn(s, delim);
173 /* s now points to the first non delimiter char, or to the end of the string */
180 /* skip non delimiters */
181 s += strcspn(s, delim);
192 int av_strcasecmp(const char *a, const char *b)
196 c1 = av_tolower(*a++);
197 c2 = av_tolower(*b++);
198 } while (c1 && c1 == c2);
202 int av_strncasecmp(const char *a, const char *b, size_t n)
204 const char *end = a + n;
207 c1 = av_tolower(*a++);
208 c2 = av_tolower(*b++);
209 } while (a < end && c1 && c1 == c2);
221 printf("Testing av_get_token()\n");
223 const char *strings[] = {
239 "'foo : ' :blahblah",
245 " foo bar : blahblah",
247 "'foo : \\ \\ ' : blahblah",
248 "'\\fo\\o:': blahblah",
249 "\\'fo\\o\\:': foo ' :blahblah"
252 for (i=0; i < FF_ARRAY_ELEMS(strings); i++) {
253 const char *p= strings[i];
255 printf(" -> |%s|", av_get_token(&p, ":"));
256 printf(" + |%s|\n", p);