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// Gulu - Golang common utilities for everyone.
// Copyright (c) 2019-present, b3log.org
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package gulu
import (
"io"
"os"
"path/filepath"
"strings"
)
// GetFileSize get the length in bytes of file of the specified path.
func (*GuluFile) GetFileSize(path string) int64 {
fi, err := os.Stat(path)
if nil != err {
logger.Error(err)
return -1
}
return fi.Size()
}
// IsExist determines whether the file spcified by the given path is exists.
func (*GuluFile) IsExist(path string) bool {
_, err := os.Stat(path)
return err == nil || os.IsExist(err)
}
// IsBinary determines whether the specified content is a binary file content.
func (*GuluFile) IsBinary(content string) bool {
for _, b := range content {
if 0 == b {
return true
}
}
return false
}
// IsImg determines whether the specified extension is a image.
func (*GuluFile) IsImg(extension string) bool {
ext := strings.ToLower(extension)
switch ext {
case ".jpg", ".jpeg", ".bmp", ".gif", ".png", ".svg", ".ico":
return true
default:
return false
}
}
// IsDir determines whether the specified path is a directory.
func (*GuluFile) IsDir(path string) bool {
fio, err := os.Lstat(path)
if os.IsNotExist(err) {
return false
}
if nil != err {
logger.Warnf("Determines whether [%s] is a directory failed: [%v]", path, err)
return false
}
return fio.IsDir()
}
// CopyFile copies the source file to the dest file.
func (*GuluFile) CopyFile(source string, dest string) (err error) {
sourcefile, err := os.Open(source)
if err != nil {
return err
}
defer sourcefile.Close()
destfile, err := os.Create(dest)
if err != nil {
return err
}
defer destfile.Close()
_, err = io.Copy(destfile, sourcefile)
if err == nil {
sourceinfo, err := os.Stat(source)
if err != nil {
err = os.Chmod(dest, sourceinfo.Mode())
}
}
return nil
}
// CopyDir copies the source directory to the dest directory.
func (*GuluFile) CopyDir(source string, dest string) (err error) {
sourceinfo, err := os.Stat(source)
if err != nil {
return err
}
// create dest dir
err = os.MkdirAll(dest, sourceinfo.Mode())
if err != nil {
return err
}
directory, err := os.Open(source)
if err != nil {
return err
}
defer directory.Close()
objects, err := directory.Readdir(-1)
if err != nil {
return err
}
for _, obj := range objects {
srcFilePath := filepath.Join(source, obj.Name())
destFilePath := filepath.Join(dest, obj.Name())
if obj.IsDir() {
// create sub-directories - recursively
err = File.CopyDir(srcFilePath, destFilePath)
if err != nil {
logger.Error(err)
}
} else {
err = File.CopyFile(srcFilePath, destFilePath)
if err != nil {
logger.Error(err)
}
}
}
return nil
}
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