github.com/erda-project/erda-infra@v1.0.9/pkg/strutil/regexp.go (about)

     1  // Copyright (c) 2021 Terminus, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package strutil
    16  
    17  import "regexp"
    18  
    19  // ReplaceAllStringSubmatchFunc apply handleFunc to all matched substring.
    20  func ReplaceAllStringSubmatchFunc(re *regexp.Regexp, s string, repl func([]string) string) string {
    21  	result := ""
    22  	lastIndex := 0
    23  
    24  	for _, v := range re.FindAllSubmatchIndex([]byte(s), -1) {
    25  		var groups []string
    26  		for i := 0; i < len(v); i += 2 {
    27  			groups = append(groups, s[v[i]:v[i+1]])
    28  		}
    29  
    30  		result += s[lastIndex:v[0]] + repl(groups)
    31  		lastIndex = v[1]
    32  	}
    33  
    34  	return result + s[lastIndex:]
    35  }