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simplify stristart()

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Originally committed as revision 9393 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Måns Rullgård 2007-06-23 00:47:28 +00:00
parent 315a2858b6
commit aa38ada2d4
1 changed files with 6 additions and 14 deletions
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20
libavformat/cutils.c
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@ -44,23 +44,15 @@ int strstart(const char *str, const char *pfx, const char **ptr)
* prefix. * prefix.
* *
* @param str input string * @param str input string
* @param val prefix to test * @param pfx prefix to test
* @param ptr updated after the prefix in str in there is a match * @param ptr updated after the prefix in str in there is a match
* @return TRUE if there is a match */ * @return TRUE if there is a match */
int stristart(const char *str, const char *val, const char **ptr) int stristart(const char *str, const char *pfx, const char **ptr)
{ {
const char *p, *q; while (*pfx && toupper((unsigned)*pfx++) == toupper((unsigned)*str++));
p = str; if (!*pfx && ptr)
q = val; *ptr = str;
while (*q != '\0') { return !*pfx;
if (toupper(*(const unsigned char *)p) != toupper(*(const unsigned char *)q))
return 0;
p++;
q++;
}
if (ptr)
*ptr = p;
return 1;
} }
/** /**