/*!
* \brief Destroy transformation including eventual parameter
* \param t transformation
*/
void tr_destroy(trans_t *t)
{
tr_param_t *tp;
tr_param_t *tp0;
if(t==NULL) return;
tp = t->params;
while(tp)
{
tp0 = tp;
tp = tp->next;
tr_param_free(tp0);
}
memset(t, 0, sizeof(trans_t));
}
/*!
* \brief Helper fuction to parse a kazoo transformation
* \param in parsed string
* \param t transformation
* \return pointer to the end of the transformation in the string - '}', null on error
*/
char* kz_tr_parse(str* in, trans_t *t)
{
char *p;
char *p0;
char *ps;
str name;
str s;
pv_spec_t *spec = NULL;
tr_param_t *tp = NULL;
if(in==NULL || t==NULL)
return NULL;
p = in->s;
name.s = in->s;
t->type = TR_KAZOO;
t->trf = kz_tr_eval;
/* find next token */
while(is_in_str(p, in) && *p!=TR_PARAM_MARKER && *p!=TR_RBRACKET) p++;
if(*p=='\0')
{
LM_ERR("invalid transformation: %.*s\n",
in->len, in->s);
goto error;
}
name.len = p - name.s;
trim(&name);
if(name.len==6 && strncasecmp(name.s, "encode", 6)==0)
{
t->subtype = TR_KAZOO_ENCODE;
goto done;
} else if(name.len==4 && strncasecmp(name.s, "json", 4)==0) {
t->subtype = TR_KAZOO_JSON;
if(*p!=TR_PARAM_MARKER)
{
LM_ERR("invalid json transformation: %.*s!\n", in->len, in->s);
goto error;
}
p++;
_kz_tr_parse_sparam(p, p0, tp, spec, ps, in, s);
t->params = tp;
tp = 0;
while(*p && (*p==' ' || *p=='\t' || *p=='\n')) p++;
if(*p!=TR_RBRACKET)
{
LM_ERR("invalid json transformation: %.*s!!\n",
in->len, in->s);
goto error;
}
goto done;
}
LM_ERR("unknown kazoo transformation: %.*s/%.*s/%d!\n", in->len, in->s,
name.len, name.s, name.len);
error:
if(tp)
tr_param_free(tp);
if(spec)
pv_spec_free(spec);
return NULL;
done:
t->name = name;
return p;
}
