/
tar.go
123 lines (108 loc) · 3.06 KB
/
tar.go
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// MIT License
//
// Copyright (c) 2021 Lack
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
package ctl
import (
"archive/tar"
"compress/gzip"
"fmt"
"io"
"os"
"path/filepath"
"github.com/spf13/cobra"
)
func tarFn(c *cobra.Command, args []string) error {
outE := os.Stdout
name, _ := c.Flags().GetString("name")
if len(name) == 0 {
return fmt.Errorf("missing name")
}
targets, _ := c.Flags().GetStringSlice("target")
if len(targets) == 0 {
return fmt.Errorf("missing target")
}
fmt.Fprintf(outE, "starting tar %s\n", name)
dest, err := os.Create(name)
if err != nil {
return err
}
defer dest.Close()
gw := gzip.NewWriter(dest)
defer gw.Close()
tw := tar.NewWriter(gw)
defer tw.Close()
for _, t := range targets {
err = compress(t, "", tw, outE)
if err != nil {
return fmt.Errorf("compress %s: %v", t, err)
}
}
fmt.Fprintf(outE, "tar %s successfully!\n", name)
return nil
}
func compress(path string, prefix string, tw *tar.Writer, out io.Writer) error {
fmt.Fprintf(out, "compress %s\n", path)
file, err := os.Open(path)
if err != nil {
return err
}
defer file.Close()
info, err := file.Stat()
if err != nil {
return err
}
if info.IsDir() {
prefix = filepath.Join(prefix, info.Name())
fileInfos, err := file.Readdir(-1)
if err != nil {
return err
}
for _, fi := range fileInfos {
err = compress(filepath.Join(file.Name(), fi.Name()), prefix, tw, out)
if err != nil {
return err
}
}
return nil
}
header, err := tar.FileInfoHeader(info, "")
header.Name = filepath.Join(prefix, header.Name)
if err != nil {
return err
}
err = tw.WriteHeader(header)
if err != nil {
return err
}
_, err = io.Copy(tw, file)
return err
}
func TarCmd() *cobra.Command {
cmd := &cobra.Command{
Use: "tar",
Short: "create a compress package for Install subcommand",
GroupID: "gpm",
RunE: tarFn,
}
cmd.PersistentFlags().StringP("name", "N", "", "the specify the name for package")
cmd.PersistentFlags().StringSliceP("target", "T", []string{}, "the specify the target list for package")
return cmd
}