github.com/hasnat/dolt/go@v0.0.0-20210628190320-9eb5d843fbb7/cmd/git-dolt/utils/append_to_file.go (about)

     1  // Copyright 2019 Dolthub, 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 utils
    16  
    17  import (
    18  	"fmt"
    19  	"os"
    20  )
    21  
    22  // AppendToFile appends the given string to the given file in the current
    23  // directory, creating it if it does not exist.
    24  func AppendToFile(f string, s string) error {
    25  	giFile, err := os.OpenFile(f, os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0644)
    26  	if err != nil {
    27  		return fmt.Errorf("error opening %s: %v", f, err)
    28  	}
    29  	defer giFile.Close()
    30  
    31  	if _, err = giFile.WriteString(fmt.Sprintf("%s\n", s)); err != nil {
    32  		return fmt.Errorf("error writing to %s at %v", f, err)
    33  	}
    34  
    35  	return nil
    36  }