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Move av_get_token() from libavfilter to libavutil.

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Originally committed as revision 25225 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Stefano Sabatini 2010-09-27 16:23:43 +00:00
parent 4a94cfea02
commit 372e288408
8 changed files with 108 additions and 88 deletions
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2
libavfilter/avfilter.h
View File

@ -26,7 +26,7 @@
#define LIBAVFILTER_VERSION_MAJOR 1
#define LIBAVFILTER_VERSION_MINOR 46
#define LIBAVFILTER_VERSION_MICRO 0
#define LIBAVFILTER_VERSION_MICRO 1
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
LIBAVFILTER_VERSION_MINOR, \

1
libavfilter/graphparser.c
View File

@ -23,6 +23,7 @@
#include <ctype.h>
#include <string.h>
#include "libavutil/avstring.h"
#include "graphparser.h"
#include "avfilter.h"
#include "avfiltergraph.h"

71
libavfilter/parseutils.c
View File

@ -28,42 +28,6 @@
#include "libavutil/random_seed.h"
#include "parseutils.h"
#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;
}
typedef struct {
const char *name; ///< a string representing the name of the color
uint8_t rgb_color[3]; ///< RGB values for the color
@ -395,41 +359,6 @@ int main(void)
{
int i;
const char *strings[] = {
"''",
"",
":",
"\\",
"'",
" '' :",
" '' '' :",
"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);
}
printf("\nTesting av_parse_color()\n");
{
uint8_t rgba[4];

15
libavfilter/parseutils.h
View File

@ -27,21 +27,6 @@
#include "libavutil/opt.h"
/**
* Unescape the given string until a non escaped terminating char,
* and return the token corresponding to the unescaped string.
*
* The normal \ and ' escaping is supported. Leading and trailing
* whitespaces are removed.
*
* @param buf the buffer to parse, buf will be updated to point to the
* terminating char
* @param term a 0-terminated list of terminating chars
* @return the malloced unescaped string, which must be av_freed by
* the user, NULL in case of allocation failure
*/
char *av_get_token(const char **buf, const char *term);
/**
* Put the RGBA values that correspond to color_string in rgba_color.
*

1
libavfilter/vf_frei0r.c
View File

@ -26,6 +26,7 @@
#include <dlfcn.h>
#include <frei0r.h>
#include "libavutil/avstring.h"
#include "avfilter.h"
#include "parseutils.h"

88
libavutil/avstring.c
View File

@ -97,3 +97,91 @@ char *av_d2str(double d)
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;
}
#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 */

16
libavutil/avstring.h
View File

@ -114,4 +114,20 @@ size_t av_strlcatf(char *dst, size_t size, const char *fmt, ...);
*/
char *av_d2str(double d);
/**
* Unescape the given string until a non escaped terminating char,
* and return the token corresponding to the unescaped string.
*
* The normal \ and ' escaping is supported. Leading and trailing
* whitespaces are removed, unless they are escaped with '\' or are
* enclosed between ''.
*
* @param buf the buffer to parse, buf will be updated to point to the
* terminating char
* @param term a 0-terminated list of terminating chars
* @return the malloced unescaped string, which must be av_freed by
* the user, NULL in case of allocation failure
*/
char *av_get_token(const char **buf, const char *term);
#endif /* AVUTIL_AVSTRING_H */

2
libavutil/avutil.h
View File

@ -40,7 +40,7 @@
#define AV_VERSION(a, b, c) AV_VERSION_DOT(a, b, c)
#define LIBAVUTIL_VERSION_MAJOR 50
#define LIBAVUTIL_VERSION_MINOR 29
#define LIBAVUTIL_VERSION_MINOR 30
#define LIBAVUTIL_VERSION_MICRO 0
#define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \