mirror of https://github.com/ouqiang/gocron
93 lines
2.7 KiB
Go
93 lines
2.7 KiB
Go
// Copyright (c) 2012 - Cloud Instruments Co., Ltd.
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this
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// list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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// ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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package seelog
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import (
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"fmt"
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"io"
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"os"
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"path/filepath"
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)
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// fileWriter is used to write to a file.
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type fileWriter struct {
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innerWriter io.WriteCloser
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fileName string
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}
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// Creates a new file and a corresponding writer. Returns error, if the file couldn't be created.
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func NewFileWriter(fileName string) (writer *fileWriter, err error) {
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newWriter := new(fileWriter)
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newWriter.fileName = fileName
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return newWriter, nil
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}
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func (fw *fileWriter) Close() error {
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if fw.innerWriter != nil {
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err := fw.innerWriter.Close()
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if err != nil {
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return err
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}
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fw.innerWriter = nil
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}
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return nil
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}
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// Create folder and file on WriteLog/Write first call
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func (fw *fileWriter) Write(bytes []byte) (n int, err error) {
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if fw.innerWriter == nil {
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if err := fw.createFile(); err != nil {
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return 0, err
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}
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}
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return fw.innerWriter.Write(bytes)
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}
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func (fw *fileWriter) createFile() error {
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folder, _ := filepath.Split(fw.fileName)
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var err error
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if 0 != len(folder) {
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err = os.MkdirAll(folder, defaultDirectoryPermissions)
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if err != nil {
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return err
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}
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}
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// If exists
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fw.innerWriter, err = os.OpenFile(fw.fileName, os.O_WRONLY|os.O_APPEND|os.O_CREATE, defaultFilePermissions)
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if err != nil {
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return err
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}
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return nil
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}
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func (fw *fileWriter) String() string {
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return fmt.Sprintf("File writer: %s", fw.fileName)
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}
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