github.com/1aal/kubeblocks@v0.0.0-20231107070852-e1c03e598921/pkg/cli/util/fileutils.go (about)

     1  /*
     2  Copyright (C) 2022-2023 ApeCloud Co., Ltd
     3  
     4  This file is part of KubeBlocks project
     5  
     6  This program is free software: you can redistribute it and/or modify
     7  it under the terms of the GNU Affero General Public License as published by
     8  the Free Software Foundation, either version 3 of the License, or
     9  (at your option) any later version.
    10  
    11  This program is distributed in the hope that it will be useful
    12  but WITHOUT ANY WARRANTY; without even the implied warranty of
    13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    14  GNU Affero General Public License for more details.
    15  
    16  You should have received a copy of the GNU Affero General Public License
    17  along with this program.  If not, see <http://www.gnu.org/licenses/>.
    18  */
    19  
    20  package util
    21  
    22  import (
    23  	"fmt"
    24  	"os"
    25  	filePath "path/filepath"
    26  )
    27  
    28  // FileExists check if a file exists, and return an error otherwise
    29  func FileExists(fileName string) (bool, error) {
    30  	if _, err := os.Stat(fileName); err != nil {
    31  		if os.IsNotExist(err) {
    32  			return false, nil
    33  		}
    34  		return false, err
    35  	}
    36  	return true, nil
    37  }
    38  
    39  func CreateAndCleanFile(file string) (*os.File, error) {
    40  	cleanedFile := filePath.Clean(file)
    41  	if exists, _ := FileExists(cleanedFile); exists {
    42  		return nil, fmt.Errorf("file already exist will not overwrite")
    43  	}
    44  	// create file
    45  	return os.Create(cleanedFile)
    46  }