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/*
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
* 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
*/
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "avstring.h"
#include "mem.h"
int av_strstart(const char *str, const char *pfx, const char **ptr)
{
while (*pfx && *pfx == *str) {
pfx++;
str++;
}
if (!*pfx && ptr)
*ptr = str;
return !*pfx;
}
int av_stristart(const char *str, const char *pfx, const char **ptr)
{
while (*pfx && toupper((unsigned)*pfx) == toupper((unsigned)*str)) {
pfx++;
str++;
}
if (!*pfx && ptr)
*ptr = str;
return !*pfx;
}
char *av_stristr(const char *s1, const char *s2)
{
if (!*s2)
return (char*)(intptr_t)s1;
do {
if (av_stristart(s1, s2, NULL))
return (char*)(intptr_t)s1;
} while (*s1++);
return NULL;
}
size_t av_strlcpy(char *dst, const char *src, size_t size)
{
size_t len = 0;
while (++len < size && *src)
*dst++ = *src++;
if (len <= size)
*dst = 0;
return len + strlen(src) - 1;
}
size_t av_strlcat(char *dst, const char *src, size_t size)
{
size_t len = strlen(dst);
if (size <= len + 1)
return len + strlen(src);
return len + av_strlcpy(dst + len, src, size - len);
}
size_t av_strlcatf(char *dst, size_t size, const char *fmt, ...)
{
int len = strlen(dst);
va_list vl;
va_start(vl, fmt);
len += vsnprintf(dst + len, size > len ? size - len : 0, fmt, vl);
va_end(vl);
return len;
}
char *av_asprintf(const char *fmt, ...)
{
char *p = NULL;
va_list va;
int len;
va_start(va, fmt);
len = vsnprintf(NULL, 0, fmt, va);
va_end(va);
if (len < 0)
goto end;
p = av_malloc(len + 1);
if (!p)
goto end;
va_start(va, fmt);
len = vsnprintf(p, len + 1, fmt, va);
va_end(va);
if (len < 0)
av_freep(&p);
end:
return p;
}
char *av_d2str(double d)
{
char *str= av_malloc(16);
if(str) snprintf(str, 16, "%f", d);
return str;
}
#define WHITESPACES " \n\t"
char *av_get_token(const char **buf, const char *term)
{
char *out = av_malloc(strlen(*buf) + 1);
char *ret= out, *end= out;
const char *p = *buf;
if (!out) return NULL;
p += strspn(p, WHITESPACES);
while(*p && !strspn(p, term)) {
char c = *p++;
if(c == '\\' && *p){
*out++ = *p++;
end= out;
}else if(c == '\''){
while(*p && *p != '\'')
*out++ = *p++;
if(*p){
p++;
end= out;
}
}else{
*out++ = c;
}
}
do{
*out-- = 0;
}while(out >= end && strspn(out, WHITESPACES));
*buf = p;
return ret;
}
char *av_strtok(char *s, const char *delim, char **saveptr)
{
char *tok;
if (!s && !(s = *saveptr))
return NULL;
/* skip leading delimiters */
s += strspn(s, delim);
/* s now points to the first non delimiter char, or to the end of the string */
if (!*s) {
*saveptr = NULL;
return NULL;
}
tok = s++;
/* skip non delimiters */
s += strcspn(s, delim);
if (*s) {
*s = 0;
*saveptr = s+1;
} else {
*saveptr = NULL;
}
return tok;
}
#ifdef TEST
#undef printf
int main(void)
{
int i;
printf("Testing av_get_token()\n");
{
const char *strings[] = {
"''",
"",
":",
"\\",
"'",
" '' :",
" '' '' :",
"foo '' :",
"'foo'",
"foo ",
" ' foo ' ",
"foo\\",
"foo': blah:blah",
"foo\\: blah:blah",
"foo\'",
"'foo : ' :blahblah",
"\\ :blah",
" foo",
" foo ",
" foo \\ ",
"foo ':blah",
" foo bar : blahblah",
"\\f\\o\\o",
"'foo : \\ \\ ' : blahblah",
"'\\fo\\o:': blahblah",
"\\'fo\\o\\:': foo ' :blahblah"
};
for (i=0; i < FF_ARRAY_ELEMS(strings); i++) {
const char *p= strings[i];
printf("|%s|", p);
printf(" -> |%s|", av_get_token(&p, ":"));
printf(" + |%s|\n", p);
}
}
return 0;
}
#endif /* TEST */
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