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13b7781ec8
* qatar/master: (23 commits) x86inc: use sse versions of common macros instead of sse2 when applicable doc/APIchanges: add missing dates and hashes lavf: don't return from void av_update_cur_dts() Changelog: add more entries. Changelog: update ffmpeg/avconv incompatibility list. avconv: remove some redundant temporary variables. avconv: fix broken indentation avconv: move copy_initial_nonkeyframes to the options context. avconv: use file:stream instead of file.stream in log messages. doc/avconv: elaborate on basic functionality. doc/avconv: -sample_fmts, not -help sample_fmts prints the sample formats openssl: Only use CRYPTO_set_id_callback on OpenSSL < 1.0.0 Call avformat_network_init/deinit in the programs Remove leftover includes of strings.h avutil: Don't allow using strcasecmp/strncasecmp Replace all usage of strcasecmp/strncasecmp avstring: Add locale independent implementations of strcasecmp/strncasecmp avstring: Add locale independent implementations of toupper/tolower cosmetics: insert some spaces in explicit enum value assignments move 8SVX audio codecs to the audio codec list part on the next bump ... Conflicts: avprobe.c doc/APIchanges ffplay.c ffserver.c libavcodec/avcodec.h libavdevice/bktr.c libavdevice/v4l.c libavdevice/v4l2.c libavformat/matroskaenc.c libavformat/wtv.c libavutil/avstring.c libavutil/avstring.h libavutil/avutil.h libswscale/x86/swscale_template.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
264 lines
5.6 KiB
C
264 lines
5.6 KiB
C
/*
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* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
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* Copyright (c) 2007 Mans Rullgard
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#include "avstring.h"
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#include "mem.h"
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int av_strstart(const char *str, const char *pfx, const char **ptr)
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{
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while (*pfx && *pfx == *str) {
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pfx++;
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str++;
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}
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if (!*pfx && ptr)
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*ptr = str;
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return !*pfx;
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}
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int av_stristart(const char *str, const char *pfx, const char **ptr)
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{
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while (*pfx && toupper((unsigned)*pfx) == toupper((unsigned)*str)) {
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pfx++;
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str++;
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}
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if (!*pfx && ptr)
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*ptr = str;
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return !*pfx;
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}
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char *av_stristr(const char *s1, const char *s2)
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{
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if (!*s2)
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return (char*)(intptr_t)s1;
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do {
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if (av_stristart(s1, s2, NULL))
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return (char*)(intptr_t)s1;
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} while (*s1++);
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return NULL;
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}
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size_t av_strlcpy(char *dst, const char *src, size_t size)
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{
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size_t len = 0;
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while (++len < size && *src)
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*dst++ = *src++;
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if (len <= size)
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*dst = 0;
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return len + strlen(src) - 1;
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}
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size_t av_strlcat(char *dst, const char *src, size_t size)
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{
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size_t len = strlen(dst);
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if (size <= len + 1)
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return len + strlen(src);
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return len + av_strlcpy(dst + len, src, size - len);
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}
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size_t av_strlcatf(char *dst, size_t size, const char *fmt, ...)
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{
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int len = strlen(dst);
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va_list vl;
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va_start(vl, fmt);
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len += vsnprintf(dst + len, size > len ? size - len : 0, fmt, vl);
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va_end(vl);
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return len;
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}
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char *av_asprintf(const char *fmt, ...)
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{
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char *p = NULL;
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va_list va;
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int len;
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va_start(va, fmt);
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len = vsnprintf(NULL, 0, fmt, va);
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va_end(va);
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if (len < 0)
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goto end;
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p = av_malloc(len + 1);
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if (!p)
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goto end;
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va_start(va, fmt);
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len = vsnprintf(p, len + 1, fmt, va);
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va_end(va);
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if (len < 0)
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av_freep(&p);
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end:
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return p;
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}
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char *av_d2str(double d)
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{
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char *str= av_malloc(16);
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if(str) snprintf(str, 16, "%f", d);
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return str;
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}
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#define WHITESPACES " \n\t"
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char *av_get_token(const char **buf, const char *term)
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{
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char *out = av_malloc(strlen(*buf) + 1);
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char *ret= out, *end= out;
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const char *p = *buf;
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if (!out) return NULL;
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p += strspn(p, WHITESPACES);
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while(*p && !strspn(p, term)) {
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char c = *p++;
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if(c == '\\' && *p){
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*out++ = *p++;
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end= out;
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}else if(c == '\''){
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while(*p && *p != '\'')
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*out++ = *p++;
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if(*p){
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p++;
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end= out;
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}
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}else{
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*out++ = c;
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}
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}
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do{
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*out-- = 0;
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}while(out >= end && strspn(out, WHITESPACES));
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*buf = p;
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return ret;
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}
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char *av_strtok(char *s, const char *delim, char **saveptr)
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{
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char *tok;
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if (!s && !(s = *saveptr))
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return NULL;
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/* skip leading delimiters */
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s += strspn(s, delim);
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/* s now points to the first non delimiter char, or to the end of the string */
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if (!*s) {
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*saveptr = NULL;
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return NULL;
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}
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tok = s++;
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/* skip non delimiters */
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s += strcspn(s, delim);
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if (*s) {
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*s = 0;
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*saveptr = s+1;
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} else {
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*saveptr = NULL;
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}
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return tok;
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}
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int av_strcasecmp(const char *a, const char *b)
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{
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uint8_t c1, c2;
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do {
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c1 = av_tolower(*a++);
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c2 = av_tolower(*b++);
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} while (c1 && c1 == c2);
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return c1 - c2;
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}
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int av_strncasecmp(const char *a, const char *b, size_t n)
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{
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const char *end = a + n;
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uint8_t c1, c2;
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do {
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c1 = av_tolower(*a++);
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c2 = av_tolower(*b++);
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} while (a < end && c1 && c1 == c2);
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return c1 - c2;
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}
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#ifdef TEST
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#undef printf
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int main(void)
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{
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int i;
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printf("Testing av_get_token()\n");
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{
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const char *strings[] = {
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"''",
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"",
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":",
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"\\",
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"'",
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" '' :",
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" '' '' :",
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"foo '' :",
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"'foo'",
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"foo ",
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" ' foo ' ",
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"foo\\",
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"foo': blah:blah",
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"foo\\: blah:blah",
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"foo\'",
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"'foo : ' :blahblah",
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"\\ :blah",
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" foo",
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" foo ",
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" foo \\ ",
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"foo ':blah",
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" foo bar : blahblah",
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"\\f\\o\\o",
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"'foo : \\ \\ ' : blahblah",
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"'\\fo\\o:': blahblah",
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"\\'fo\\o\\:': foo ' :blahblah"
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};
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for (i=0; i < FF_ARRAY_ELEMS(strings); i++) {
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const char *p= strings[i];
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printf("|%s|", p);
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printf(" -> |%s|", av_get_token(&p, ":"));
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printf(" + |%s|\n", p);
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}
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}
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return 0;
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}
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#endif /* TEST */
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