github.com/cloudfoundry/libcfbuildpack@v1.91.23/helper/has_file.go (about) 1 /* 2 * Copyright 2018-2020 the original author or 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 * https://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 helper 18 19 import ( 20 "regexp" 21 ) 22 23 // HasFile searches a directory structure for a file matching the provided pattern, returning true if found. 24 func HasFile(root string, pattern *regexp.Regexp) (bool, error) { 25 f, err := FindFiles(root, pattern) 26 if err != nil { 27 return false, err 28 } 29 30 return len(f) > 0, nil 31 32 }