-// parses crit1=val1,crit2=val2|val3,...
-static struct database_criterion *parse_filter(NMEM m, const char *buf)
-{
- struct database_criterion *res = 0;
- char **values;
- int num;
- int i;
-
- if (!buf || !*buf)
- return 0;
- nmem_strsplit(m, ",", buf, &values, &num);
- for (i = 0; i < num; i++)
- {
- char **subvalues;
- int subnum;
- int subi;
- struct database_criterion *new = nmem_malloc(m, sizeof(*new));
- char *eq;
- if ((eq = strchr(values[i], '=')))
- new->type = PAZPAR2_STRING_MATCH;
- else if ((eq = strchr(values[i], '~')))
- new->type = PAZPAR2_SUBSTRING_MATCH;
- else
- {
- yaz_log(YLOG_WARN, "Missing equal-sign/tilde in filter");
- return 0;
- }
- *(eq++) = '\0';
- new->name = values[i];
- nmem_strsplit(m, "|", eq, &subvalues, &subnum);
- new->values = 0;
- for (subi = 0; subi < subnum; subi++)
- {
- struct database_criterion_value *newv
- = nmem_malloc(m, sizeof(*newv));
- newv->value = subvalues[subi];
- newv->next = new->values;
- new->values = newv;
- }
- new->next = res;
- res = new;
- }
- return res;
-}