160 lines
3.3 KiB
Go
160 lines
3.3 KiB
Go
// Copyright (c) 2014-2016, b3log.org & hacpai.com
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package util
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import (
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"io"
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"os"
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"path/filepath"
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"strings"
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"github.com/b3log/wide/log"
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)
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// Logger.
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var fileLogger = log.NewLogger(os.Stdout)
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type myfile struct{}
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// File utilities.
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var File = myfile{}
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// GetFileSize get the length in bytes of file of the specified path.
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func (*myfile) GetFileSize(path string) int64 {
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fi, err := os.Stat(path)
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if nil != err {
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fileLogger.Error(err)
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return -1
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}
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return fi.Size()
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}
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// IsExist determines whether the file spcified by the given path is exists.
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func (*myfile) IsExist(path string) bool {
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_, err := os.Stat(path)
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return err == nil || os.IsExist(err)
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}
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// IsBinary determines whether the specified content is a binary file content.
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func (*myfile) IsBinary(content string) bool {
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for _, b := range content {
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if 0 == b {
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return true
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}
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}
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return false
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}
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// IsImg determines whether the specified extension is a image.
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func (*myfile) IsImg(extension string) bool {
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ext := strings.ToLower(extension)
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switch ext {
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case ".jpg", ".jpeg", ".bmp", ".gif", ".png", ".svg", ".ico":
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return true
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default:
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return false
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}
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}
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// IsDir determines whether the specified path is a directory.
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func (*myfile) IsDir(path string) bool {
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fio, err := os.Lstat(path)
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if nil != err {
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fileLogger.Warnf("Determines whether [%s] is a directory failed: [%v]", path, err)
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return false
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}
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return fio.IsDir()
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}
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// CopyFile copies the source file to the dest file.
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func (*myfile) CopyFile(source string, dest string) (err error) {
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sourcefile, err := os.Open(source)
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if err != nil {
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return err
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}
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defer sourcefile.Close()
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destfile, err := os.Create(dest)
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if err != nil {
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return err
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}
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defer destfile.Close()
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_, err = io.Copy(destfile, sourcefile)
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if err == nil {
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sourceinfo, err := os.Stat(source)
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if err != nil {
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err = os.Chmod(dest, sourceinfo.Mode())
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}
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}
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return nil
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}
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// CopyDir copies the source directory to the dest directory.
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func (*myfile) CopyDir(source string, dest string) (err error) {
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sourceinfo, err := os.Stat(source)
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if err != nil {
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return err
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}
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// create dest dir
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err = os.MkdirAll(dest, sourceinfo.Mode())
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if err != nil {
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return err
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}
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directory, err := os.Open(source)
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if err != nil {
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return err
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}
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defer directory.Close()
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objects, err := directory.Readdir(-1)
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if err != nil {
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return err
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}
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for _, obj := range objects {
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srcFilePath := filepath.Join(source, obj.Name())
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destFilePath := filepath.Join(dest, obj.Name())
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if obj.IsDir() {
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// create sub-directories - recursively
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err = File.CopyDir(srcFilePath, destFilePath)
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if err != nil {
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fileLogger.Error(err)
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}
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} else {
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err = File.CopyFile(srcFilePath, destFilePath)
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if err != nil {
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fileLogger.Error(err)
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}
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}
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}
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return nil
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}
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