github.com/cloudfoundry/libcfbuildpack@v1.91.23/helper/file_exists.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  	"os"
    21  )
    22  
    23  // FileExists returns whether a file exists taking into account various error cases.
    24  func FileExists(file string) (bool, error) {
    25  	_, err := os.Stat(file)
    26  	if err != nil {
    27  		if os.IsNotExist(err) {
    28  			return false, nil
    29  		}
    30  
    31  		return false, err
    32  	}
    33  
    34  	return true, nil
    35  }