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
30 int av_strstart(const char *str, const char *pfx, const char **ptr)
32 while (*pfx && *pfx == *str) {
41 int av_stristart(const char *str, const char *pfx, const char **ptr)
43 while (*pfx && toupper((unsigned)*pfx) == toupper((unsigned)*str)) {
52 char *av_stristr(const char *s1, const char *s2)
55 return (char*)(intptr_t)s1;
58 if (av_stristart(s1, s2, NULL))
59 return (char*)(intptr_t)s1;
65 size_t av_strlcpy(char *dst, const char *src, size_t size)
68 while (++len < size && *src)
72 return len + strlen(src) - 1;
75 size_t av_strlcat(char *dst, const char *src, size_t size)
77 size_t len = strlen(dst);
79 return len + strlen(src);
80 return len + av_strlcpy(dst + len, src, size - len);
83 size_t av_strlcatf(char *dst, size_t size, const char *fmt, ...)
85 int len = strlen(dst);
89 len += vsnprintf(dst + len, size > len ? size - len : 0, fmt, vl);
95 char *av_asprintf(const char *fmt, ...)
102 len = vsnprintf(NULL, 0, fmt, va);
107 p = av_malloc(len + 1);
112 len = vsnprintf(p, len + 1, fmt, va);
121 char *av_d2str(double d)
123 char *str= av_malloc(16);
124 if(str) snprintf(str, 16, "%f", d);
128 #define WHITESPACES " \n\t"
130 char *av_get_token(const char **buf, const char *term)
132 char *out = av_malloc(strlen(*buf) + 1);
133 char *ret= out, *end= out;
134 const char *p = *buf;
135 if (!out) return NULL;
136 p += strspn(p, WHITESPACES);
138 while(*p && !strspn(p, term)) {
144 while(*p && *p != '\'')
157 }while(out >= end && strspn(out, WHITESPACES));
164 char *av_strtok(char *s, const char *delim, char **saveptr)
168 if (!s && !(s = *saveptr))
171 /* skip leading delimiters */
172 s += strspn(s, delim);
174 /* s now points to the first non delimiter char, or to the end of the string */
181 /* skip non delimiters */
182 s += strcspn(s, delim);
193 int av_strcasecmp(const char *a, const char *b)
197 c1 = av_tolower(*a++);
198 c2 = av_tolower(*b++);
199 } while (c1 && c1 == c2);
203 int av_strncasecmp(const char *a, const char *b, size_t n)
205 const char *end = a + n;
208 c1 = av_tolower(*a++);
209 c2 = av_tolower(*b++);
210 } while (a < end && c1 && c1 == c2);
223 printf("Testing av_get_token()\n");
225 const char *strings[] = {
241 "'foo : ' :blahblah",
247 " foo bar : blahblah",
249 "'foo : \\ \\ ' : blahblah",
250 "'\\fo\\o:': blahblah",
251 "\\'fo\\o\\:': foo ' :blahblah"
254 for (i=0; i < FF_ARRAY_ELEMS(strings); i++) {
255 const char *p= strings[i];
257 printf(" -> |%s|", av_get_token(&p, ":"));
258 printf(" + |%s|\n", p);