diff options
| author | Stefano Sabatini <stefano.sabatini-lala@poste.it> | 2010-11-01 09:34:21 +0000 |
|---|---|---|
| committer | Stefano Sabatini <stefano.sabatini-lala@poste.it> | 2010-11-01 09:34:21 +0000 |
| commit | 4cabef0a9db40570e879d144052ad544f1a847df (patch) | |
| tree | 765b28c1b797188bb1dd6085f54a9650b6759359 /libavutil/eval.c | |
| parent | 2b59fbe9b1e3721ba0785fbed9fc62a8049a6830 (diff) | |
| download | ffmpeg-4cabef0a9db40570e879d144052ad544f1a847df.tar.gz | |
Make strmatch() return 1 only if the string compared against the
prefix does not contain other characters which may belong to an
identifier.
This allows to distinguish for example to have different constants
with the same prefix (e.g. "foo" and "foobar").
Originally committed as revision 25626 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavutil/eval.c')
| -rw-r--r-- | libavutil/eval.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libavutil/eval.c b/libavutil/eval.c index 2799160094..a4ae2695d7 100644 --- a/libavutil/eval.c +++ b/libavutil/eval.c @@ -103,13 +103,16 @@ double av_strtod(const char *numstr, char **tail) return d; } +#define IS_IDENTIFIER_CHAR(c) ((c) - '0' <= 9U || (c) - 'a' <= 25U || (c) - 'A' <= 25U || (c) == '_') + static int strmatch(const char *s, const char *prefix) { int i; for (i=0; prefix[i]; i++) { if (prefix[i] != s[i]) return 0; } - return 1; + /* return 1 only if the s identifier is terminated */ + return !IS_IDENTIFIER_CHAR(s[i]); } struct AVExpr { |