int
oggz_comment_add_byname (OGGZ * oggz, long serialno,
const char * name, const char * value)
{
oggz_stream_t * stream;
OggzComment * new_comment;
if (oggz == NULL) return OGGZ_ERR_BAD_OGGZ;
stream = oggz_get_stream (oggz, serialno);
if (stream == NULL) stream = oggz_add_stream (oggz, serialno);
if (oggz->flags & OGGZ_WRITE) {
if (OGGZ_CONFIG_WRITE) {
if (!oggz_comment_validate_byname (name, value))
return OGGZ_ERR_COMMENT_INVALID;
new_comment = oggz_comment_new (name, value);
_oggz_comment_add (stream, new_comment);
return 0;
} else {
return OGGZ_ERR_DISABLED;
}
} else {
return OGGZ_ERR_INVALID;
}
}
static OggzComment *
_oggz_comment_add_byname (oggz_stream_t * stream, const char * name, const char * value)
{
OggzComment * comment, * new_comment;
int i;
/* Check that the same name=value pair is not already present */
for (i = 0; i < oggz_vector_size (stream->comments); i++) {
comment = (OggzComment *) oggz_vector_nth_p (stream->comments, i);
if (comment->name && !strcasecmp (name, comment->name)) {
if (comment->value == NULL) {
if (value == NULL) return comment;
} else if ((value && !strcmp (value, comment->value)) ||
(value == NULL && comment->value == NULL)) {
return comment;
}
}
}
/* Allocate new comment and insert it */
if ((new_comment = oggz_comment_new (name, value)) == NULL)
return NULL;
return oggz_vector_insert_p (stream->comments, new_comment);
}
int
oggz_comments_decode (OGGZ * oggz, long serialno,
unsigned char * comments, long length)
{
oggz_stream_t * stream;
char *c= (char *)comments;
int len, i, nb_fields, n;
char *end;
char * name, * value, * nvalue = NULL;
OggzComment * comment;
if (length<8)
return -1;
end = c+length;
len=readint(c, 0);
c+=4;
if (c+len>end) return -1;
stream = oggz_get_stream (oggz, serialno);
if (stream == NULL) return OGGZ_ERR_BAD_SERIALNO;
/* Vendor */
nvalue = oggz_strdup_len (c, len);
if (!nvalue) return -1;
_oggz_comment_set_vendor (oggz, serialno, nvalue);
if (nvalue) oggz_free (nvalue);
#ifdef DEBUG
fwrite(c, 1, len, stderr);
fputc ('\n', stderr);
#endif
c+=len;
if (c+4>end) return -1;
nb_fields=readint(c, 0);
c+=4;
for (i=0; i<nb_fields; i++) {
if (c+4>end) return -1;
len=readint(c, 0);
c+=4;
if (c+len>end) return -1;
name = c;
value = oggz_index_len (c, '=', len);
if (value) {
*value = '\0';
value++;
n = c+len - value;
nvalue = oggz_strdup_len (value, n);
#ifdef DEBUG
printf ("oggz_comments_decode: %s -> %s (length %d)\n",
name, nvalue, n);
#endif
comment = oggz_comment_new (name, nvalue);
_oggz_comment_add (stream, comment);
oggz_free (nvalue);
} else {
nvalue = oggz_strdup_len (name, len);
comment = oggz_comment_new (nvalue, NULL);
_oggz_comment_add (stream, comment);
oggz_free (nvalue);
}
c+=len;
}
#ifdef DEBUG
printf ("oggz_comments_decode: done\n");
#endif
return 0;
}
