Datum
ltq_regex(PG_FUNCTION_ARGS)
{
ltree *tree = PG_GETARG_LTREE(0);
lquery *query = PG_GETARG_LQUERY(1);
bool res = false;
if (query->flag & LQUERY_HASNOT)
{
FieldNot fn;
fn.q = NULL;
res = checkCond(LQUERY_FIRST(query), query->numlevel,
LTREE_FIRST(tree), tree->numlevel, &fn);
}
else
{
res = checkCond(LQUERY_FIRST(query), query->numlevel,
LTREE_FIRST(tree), tree->numlevel, NULL);
}
PG_FREE_IF_COPY(tree, 0);
PG_FREE_IF_COPY(query, 1);
PG_RETURN_BOOL(res);
}
Datum
_ltq_regex(PG_FUNCTION_ARGS)
{
ArrayType *la = PG_GETARG_ARRAYTYPE_P(0);
lquery *query = PG_GETARG_LQUERY(1);
bool res = array_iterator(la, ltq_regex, (void *) query, NULL);
PG_FREE_IF_COPY(la, 0);
PG_FREE_IF_COPY(query, 1);
PG_RETURN_BOOL(res);
}
Datum
_ltq_extract_regex(PG_FUNCTION_ARGS)
{
ArrayType *la = PG_GETARG_ARRAYTYPE_P(0);
lquery *query = PG_GETARG_LQUERY(1);
ltree *found,
*item;
if (!array_iterator(la, ltq_regex, (void *) query, &found))
{
PG_FREE_IF_COPY(la, 0);
PG_FREE_IF_COPY(query, 1);
PG_RETURN_NULL();
}
item = (ltree *) palloc(VARSIZE(found));
memcpy(item, found, VARSIZE(found));
PG_FREE_IF_COPY(la, 0);
PG_FREE_IF_COPY(query, 1);
PG_RETURN_POINTER(item);
}
Datum
lquery_out(PG_FUNCTION_ARGS)
{
lquery *in = PG_GETARG_LQUERY(0);
char *buf,
*ptr;
int i,
j,
totallen = 1;
lquery_level *curqlevel;
lquery_variant *curtlevel;
curqlevel = LQUERY_FIRST(in);
for (i = 0; i < in->numlevel; i++)
{
totallen++;
if (curqlevel->numvar)
totallen += 1 + (curqlevel->numvar * 4) + curqlevel->totallen;
else
totallen += 2 * 11 + 4;
curqlevel = LQL_NEXT(curqlevel);
}
ptr = buf = (char *) palloc(totallen);
curqlevel = LQUERY_FIRST(in);
for (i = 0; i < in->numlevel; i++)
{
if (i != 0)
{
*ptr = '.';
ptr++;
}
if (curqlevel->numvar)
{
if (curqlevel->flag & LQL_NOT)
{
*ptr = '!';
ptr++;
}
curtlevel = LQL_FIRST(curqlevel);
for (j = 0; j < curqlevel->numvar; j++)
{
if (j != 0)
{
*ptr = '|';
ptr++;
}
memcpy(ptr, curtlevel->name, curtlevel->len);
ptr += curtlevel->len;
if ((curtlevel->flag & LVAR_SUBLEXEME))
{
*ptr = '%';
ptr++;
}
if ((curtlevel->flag & LVAR_INCASE))
{
*ptr = '@';
ptr++;
}
if ((curtlevel->flag & LVAR_ANYEND))
{
*ptr = '*';
ptr++;
}
curtlevel = LVAR_NEXT(curtlevel);
}
}
else
{
if (curqlevel->low == curqlevel->high)
{
sprintf(ptr, "*{%d}", curqlevel->low);
}
else if (curqlevel->low == 0)
{
if (curqlevel->high == 0xffff)
{
*ptr = '*';
*(ptr + 1) = '\0';
}
else
sprintf(ptr, "*{,%d}", curqlevel->high);
}
else if (curqlevel->high == 0xffff)
{
sprintf(ptr, "*{%d,}", curqlevel->low);
}
else
sprintf(ptr, "*{%d,%d}", curqlevel->low, curqlevel->high);
ptr = strchr(ptr, '\0');
}
curqlevel = LQL_NEXT(curqlevel);
}
*ptr = '\0';
PG_FREE_IF_COPY(in, 0);
PG_RETURN_POINTER(buf);
}
