plc4go/spi/utils/Regexp.go

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package utils

import (
	"regexp"
	"strconv"
)

func GetSubgroupMatches(r *regexp.Regexp, query string) map[string]string {
	match := r.FindStringSubmatch(query)
	if match == nil {
		return nil
	}
	subMatchMap := make(map[string]string)
	for i, name := range r.SubexpNames()[1:] {
		groupIndex := i + 1
		if name == "" {
			name = "_" + strconv.Itoa(groupIndex)
		}
		subMatchMap[name] = match[groupIndex]
	}
	return subMatchMap
}