94 lines
1.8 KiB
Go
94 lines
1.8 KiB
Go
package file
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import (
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"fmt"
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"io/ioutil"
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"mime/multipart"
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"os"
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"path"
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)
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// GetSize get the file size
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func GetSize(f multipart.File) (int, error) {
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content, err := ioutil.ReadAll(f)
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return len(content), err
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}
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// GetExt get the file ext
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func GetExt(fileName string) string {
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return path.Ext(fileName)
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}
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// CheckNotExist check if the file exists
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func CheckNotExist(src string) bool {
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_, err := os.Stat(src)
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return os.IsNotExist(err)
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}
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// CheckPermission check if the file has permission
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func CheckPermission(src string) bool {
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_, err := os.Stat(src)
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return os.IsPermission(err)
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}
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// IsNotExistMkDir create a directory if it does not exist
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func IsNotExistMkDir(src string) error {
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if notExist := CheckNotExist(src); notExist == true {
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if err := MkDir(src); err != nil {
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return err
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}
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}
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return nil
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}
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// MkDir create a directory
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func MkDir(src string) error {
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err := os.MkdirAll(src, os.ModePerm)
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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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// Open a file according to a specific mode
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func Open(name string, flag int, perm os.FileMode) (*os.File, error) {
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f, err := os.OpenFile(name, flag, perm)
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if err != nil {
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return nil, err
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}
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return f, nil
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}
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// MustOpen maximize trying to open the file
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func MustOpen(fileName, filePath string) (*os.File, error) {
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dir, err := os.Getwd()
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if err != nil {
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return nil, fmt.Errorf("os.Getwd err: %v", err)
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}
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src := dir + "/" + filePath
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perm := CheckPermission(src)
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if perm == true {
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return nil, fmt.Errorf("file.CheckPermission Permission denied src: %s", src)
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}
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err = IsNotExistMkDir(src)
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if err != nil {
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return nil, fmt.Errorf("file.IsNotExistMkDir src: %s, err: %v", src, err)
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}
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f, err := Open(src+fileName, os.O_APPEND|os.O_CREATE|os.O_RDWR, 0644)
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if err != nil {
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return nil, fmt.Errorf("Fail to OpenFile :%v", err)
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}
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return f, nil
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}
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