github.com/kubewharf/katalyst-core@v0.5.3/pkg/util/syntax/regexp.go (about) 1 /* 2 Copyright 2022 The Katalyst Authors. 3 4 Licensed under the Apache License, Version 2.0 (the "License"); 5 you may not use this file except in compliance with the License. 6 You may obtain a copy of the License at 7 8 http://www.apache.org/licenses/LICENSE-2.0 9 10 Unless required by applicable law or agreed to in writing, software 11 distributed under the License is distributed on an "AS IS" BASIS, 12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 See the License for the specific language governing permissions and 14 limitations under the License. 15 */ 16 17 package syntax 18 19 import ( 20 "regexp" 21 "strconv" 22 23 "github.com/pkg/errors" 24 ) 25 26 // ExtractIntValue extract int value from a string according regexp. 27 func ExtractIntValue(s string, r *regexp.Regexp) (bool, int, error) { 28 matches := r.FindSubmatch([]byte(s)) 29 if len(matches) == 2 { 30 val, err := strconv.ParseInt(string(matches[1]), 10, 32) 31 if err != nil { 32 return false, -1, errors.Wrap(err, "parse int failed") 33 } 34 35 return true, int(val), nil 36 } 37 38 return false, -1, nil 39 } 40 41 // ExtractStringValue extract string value from a string according regexp. 42 func ExtractStringValue(s string, r *regexp.Regexp) (bool, string, error) { 43 matches := r.FindSubmatch([]byte(s)) 44 if len(matches) == 2 { 45 return true, string(matches[1]), nil 46 } 47 48 return false, "", nil 49 }