111 lines
2.5 KiB
C
111 lines
2.5 KiB
C
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/*
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* copyright (c) 2009 Stefano Sabatini
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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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/**
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* @file libavfilter/parseutils.c
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* parsing utils
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*/
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#include <string.h>
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#include "libavutil/avutil.h"
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#include "parseutils.h"
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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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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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#ifdef TEST
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#undef printf
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int main()
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{
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int i;
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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': 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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return 0;
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}
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#endif
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