PHP_PGSQL_API int php_pgsql_meta_data(PGconn *pg_link, const char *table_name, zval *meta, zend_bool extended)
{
	PGresult *pg_result;
	char *src, *tmp_name, *tmp_name2 = NULL;
	char *escaped;
	smart_str querystr = {0};
	size_t new_len;
	int i, num_rows;
	zval elem;

	if (!*table_name) {
		php_error_docref(NULL, E_WARNING, "The table name must be specified");
		return FAILURE;
	}

	src = estrdup(table_name);
	tmp_name = php_strtok_r(src, ".", &tmp_name2);
	
	if (!tmp_name2 || !*tmp_name2) {
		/* Default schema */
		tmp_name2 = tmp_name;
		tmp_name = "public";
	}

	if (extended) {
		smart_str_appends(&querystr,
						  "SELECT a.attname, a.attnum, t.typname, a.attlen, a.attnotNULL, a.atthasdef, a.attndims, t.typtype, "
						  "d.description "
						  "FROM pg_class as c "
						  " JOIN pg_attribute a ON (a.attrelid = c.oid) "
						  " JOIN pg_type t ON (a.atttypid = t.oid) "
						  " JOIN pg_namespace n ON (c.relnamespace = n.oid) "
						  " LEFT JOIN pg_description d ON (d.objoid=a.attrelid AND d.objsubid=a.attnum AND c.oid=d.objoid) "
						  "WHERE a.attnum > 0  AND c.relname = '");
	} else {
		smart_str_appends(&querystr,
						  "SELECT a.attname, a.attnum, t.typname, a.attlen, a.attnotnull, a.atthasdef, a.attndims, t.typtype "
						  "FROM pg_class as c "
						  " JOIN pg_attribute a ON (a.attrelid = c.oid) "
						  " JOIN pg_type t ON (a.atttypid = t.oid) "
						  " JOIN pg_namespace n ON (c.relnamespace = n.oid) "
						  "WHERE a.attnum > 0 AND c.relname = '");
	}
	escaped = (char *)safe_emalloc(strlen(tmp_name2), 2, 1);
	new_len = PQescapeStringConn(pg_link, escaped, tmp_name2, strlen(tmp_name2), NULL);
	if (new_len) {
		smart_str_appendl(&querystr, escaped, new_len);
	}
	efree(escaped);

	smart_str_appends(&querystr, "' AND n.nspname = '");
	escaped = (char *)safe_emalloc(strlen(tmp_name), 2, 1);
	new_len = PQescapeStringConn(pg_link, escaped, tmp_name, strlen(tmp_name), NULL);
	if (new_len) {
		smart_str_appendl(&querystr, escaped, new_len);
	}
	efree(escaped);

	smart_str_appends(&querystr, "' ORDER BY a.attnum;");
	smart_str_0(&querystr);
	efree(src);

	pg_result = PQexec(pg_link, querystr.s->val);
	if (PQresultStatus(pg_result) != PGRES_TUPLES_OK || (num_rows = PQntuples(pg_result)) == 0) {
		php_error_docref(NULL, E_WARNING, "Table '%s' doesn't exists", table_name);
		smart_str_free(&querystr);
		PQclear(pg_result);
		return FAILURE;
	}
	smart_str_free(&querystr);

	for (i = 0; i < num_rows; i++) {
		char *name;
		array_init(&elem);
		/* pg_attribute.attnum */
		add_assoc_long_ex(&elem, "num", sizeof("num") - 1, atoi(PQgetvalue(pg_result, i, 1)));
		/* pg_type.typname */
		add_assoc_string_ex(&elem, "type", sizeof("type") - 1, PQgetvalue(pg_result, i, 2));
		/* pg_attribute.attlen */
		add_assoc_long_ex(&elem, "len", sizeof("len") - 1, atoi(PQgetvalue(pg_result,i,3)));
		/* pg_attribute.attnonull */
		add_assoc_bool_ex(&elem, "not null", sizeof("not null") - 1, !strcmp(PQgetvalue(pg_result, i, 4), "t"));
		/* pg_attribute.atthasdef */
		add_assoc_bool_ex(&elem, "has default", sizeof("has default") - 1, !strcmp(PQgetvalue(pg_result,i,5), "t"));
		/* pg_attribute.attndims */
		add_assoc_long_ex(&elem, "array dims", sizeof("array dims") - 1, atoi(PQgetvalue(pg_result, i, 6)));
		/* pg_type.typtype */
		add_assoc_bool_ex(&elem, "is enum", sizeof("is enum") - 1, !strcmp(PQgetvalue(pg_result, i, 7), "e"));
		if (extended) {
			/* pg_type.typtype */
			add_assoc_bool_ex(&elem, "is base", sizeof("is base") - 1, !strcmp(PQgetvalue(pg_result, i, 7), "b"));
			add_assoc_bool_ex(&elem, "is composite", sizeof("is composite") - 1, !strcmp(PQgetvalue(pg_result, i, 7), "c"));
			add_assoc_bool_ex(&elem, "is pesudo", sizeof("is pesudo") - 1, !strcmp(PQgetvalue(pg_result, i, 7), "p"));
			/* pg_description.description */
			add_assoc_string_ex(&elem, "description", sizeof("description") - 1, PQgetvalue(pg_result, i, 8));
		}
		/* pg_attribute.attname */
		name = PQgetvalue(pg_result,i,0);
		add_assoc_zval(meta, name, &elem);
	}
	PQclear(pg_result);
	
	return SUCCESS;
}

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