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libtags: trim text tags and ignore empty values

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This commit is contained in:
Sigrid 2021-04-30 00:20:39 +02:00
parent e5535fad32
commit dd86214d77
2 changed files with 14 additions and 3 deletions
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13
sys/src/cmd/audio/libtags/tags.c
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@ -36,12 +36,23 @@ static const Getter g[] =
};
void
tagscallcb(Tagctx *ctx, int type, const char *k, const char *s, int offset, int size, Tagread f)
tagscallcb(Tagctx *ctx, int type, const char *k, char *s, int offset, int size, Tagread f)
{
char *e;
if(f == nil && size == 0){
while(*s <= ' ' && *s)
s++;
e = s + strlen(s);
while(e != s && e[-1] <= ' ')
e--;
*e = 0;
}
if(type != Tunknown){
ctx->found |= 1<<type;
ctx->num++;
}
if(*s)
ctx->tag(ctx, type, k, s, offset, size, f);
}

2
sys/src/cmd/audio/libtags/tagspriv.h
View file

@ -39,6 +39,6 @@ int cp437toutf8(char *o, int osz, const char *s, int sz);
*/
void cbvorbiscomment(Tagctx *ctx, char *k, char *v);
void tagscallcb(Tagctx *ctx, int type, const char *k, const char *s, int offset, int size, Tagread f);
void tagscallcb(Tagctx *ctx, int type, const char *k, char *s, int offset, int size, Tagread f);
#define txtcb(ctx, type, k, s) tagscallcb(ctx, type, k, (const char*)s, 0, 0, nil)