static int attribute_iterate(const char **item,
struct ustring *name,
struct ustring *value)
{
static const char name_set[] = { USTRING_ALPHA_UPPER, '-', '\0' };
if (unlikely(!item) || unlikely(!*item))
return UBASE_ERR_INVALID;
struct ustring tmp = ustring_from_str(*item);
if (unlikely(ustring_is_empty(tmp))) {
*item = NULL;
return UBASE_ERR_NONE;
}
*name = ustring_split_while(&tmp, name_set);
if (unlikely(!ustring_match_str(tmp, "=")))
return UBASE_ERR_INVALID;
tmp = ustring_shift(tmp, 1);
if (ustring_match_str(tmp, "\"")) {
tmp = ustring_shift(tmp, 1);
*value = ustring_split_until(&tmp, "\"");
if (unlikely(!ustring_match_str(tmp, "\"")))
return UBASE_ERR_INVALID;
tmp = ustring_shift(tmp, 1);
}
else {
*value = ustring_split_until(&tmp, ",");
}
if (ustring_match_str(tmp, ","))
tmp = ustring_shift(tmp, 1);
else if (!ustring_is_empty(tmp))
return UBASE_ERR_INVALID;
*item = tmp.at;
return UBASE_ERR_NONE;
}
/** @internal @This sets the dvbcsa key.
*
* @param upipe description structure of the pipe
* @param key dvbcsa key to set
* @return an error code
*/
static int upipe_dvbcsa_enc_set_key(struct upipe *upipe, const char *key)
{
struct upipe_dvbcsa_enc *upipe_dvbcsa_enc =
upipe_dvbcsa_enc_from_upipe(upipe);
dvbcsa_key_free(upipe_dvbcsa_enc->key);
upipe_dvbcsa_enc->key = NULL;
if (!key)
return UBASE_ERR_NONE;
struct ustring_dvbcsa_cw cw = ustring_to_dvbcsa_cw(ustring_from_str(key));
if (unlikely(ustring_is_empty(cw.str) || strlen(key) != cw.str.len))
return UBASE_ERR_INVALID;
upipe_notice(upipe, "key chanhed");
upipe_dvbcsa_enc->key = dvbcsa_key_alloc();
UBASE_ALLOC_RETURN(upipe_dvbcsa_enc->key);
dvbcsa_key_set(cw.value, upipe_dvbcsa_enc->key);
return UBASE_ERR_NONE;
}