80 lines
1.8 KiB
Go
80 lines
1.8 KiB
Go
// Copyright (c) 2014, B3log
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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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"os"
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"strings"
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"github.com/golang/glog"
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)
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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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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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glog.Warningf("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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