85 lines
1.2 KiB
Go
85 lines
1.2 KiB
Go
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package pkg
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import (
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"errors"
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"io"
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"mime/multipart"
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"os"
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"packet-ui/pkg/md5"
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"path/filepath"
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)
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func FileSave(r io.Reader, dst string) (err error) {
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var (
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fp string
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out io.WriteCloser
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)
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fp, _ = filepath.Split(dst)
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err = DirCheck(fp)
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out, err = os.Create(dst)
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if err != nil {
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return err
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}
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defer out.Close()
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_, err = io.Copy(out, r)
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return
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}
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// FileMD5 计算文件 md5 值
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func FileMD5(file string) (string, error) {
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f, err := os.Open(file)
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if err != nil {
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return "", err
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}
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info, err := f.Stat()
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if err != nil {
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return "", err
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}
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size := info.Size()
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return md5.Sum(f, size, BlockSize, ChunkSize)
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}
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func MultipartMD5(fh *multipart.FileHeader) (string, error) {
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f, err := fh.Open()
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if err != nil {
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return "", err
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}
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size := fh.Size
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return md5.Sum(f, size, BlockSize, ChunkSize)
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}
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const (
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BlockSize = 1 << 10
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ChunkSize = BlockSize << 2
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)
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var (
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ErrorIsNotDir = errors.New("path is not dir. ")
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)
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func DirCheck(dir string) (err error) {
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var fi os.FileInfo
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if fi, err = os.Stat(dir); err != nil {
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if !os.IsExist(err) || os.IsNotExist(err) {
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return DirMk(dir)
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}
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}
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if !fi.IsDir() {
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err = ErrorIsNotDir
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}
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return
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}
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func DirMk(dir string) error {
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return os.MkdirAll(dir, 0755)
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}
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