/
misc.go
388 lines (359 loc) 路 7.92 KB
/
misc.go
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package main
import (
"crypto/cipher"
"fmt"
"io"
"os"
"path/filepath"
"strings"
"text/tabwriter"
"time"
"github.com/aegistudio/shaft"
"github.com/aegistudio/shaft/serpent"
"github.com/pkg/errors"
"github.com/spf13/afero"
"github.com/spf13/cobra"
"github.com/aegistudio/enigma"
)
var cfg = enigma.Config{
PrefixLength: 3,
}
var cmdInit = &cobra.Command{
Use: "init",
Short: "initialize enigma file system at path",
RunE: serpent.Executor(shaft.Invoke(func(
base *baseFsPath, rootKey cipher.AEAD,
) error {
return enigma.Init(base.baseFs, rootKey, base.path, cfg)
})).RunE,
}
func init() {
cmdInit.PersistentFlags().Uint32Var(
&cfg.PrefixLength, "prefix-length", cfg.PrefixLength,
"length of file name's nonce prefix")
rootCmd.AddCommand(cmdInit)
}
var (
mkdirParents bool
mkdirPerm = os.FileMode(0755)
)
var cmdMkdir = &cobra.Command{
Use: "mkdir",
Short: "create directory inside the file system",
Args: cobra.MinimumNArgs(1),
RunE: serpent.Executor(shaft.Module(
withReadWriteOption,
shaft.Invoke(func(
hfs *enigma.Fs, args serpent.CommandArgs,
) error {
mkdir := hfs.Mkdir
if mkdirParents {
mkdir = hfs.MkdirAll
}
for _, dir := range args {
if err := mkdir(dir, mkdirPerm); err != nil {
return err
}
}
return nil
}),
)).RunE,
}
func init() {
cmdMkdir.PersistentFlags().BoolVarP(
&mkdirParents, "parents", "p", mkdirParents,
"make parent directories as needed")
rootCmd.AddCommand(cmdMkdir)
}
var (
teeAppendMode bool
teePerm = os.FileMode(0644)
)
var cmdTee = &cobra.Command{
Use: "tee",
Short: "tee command for enigma file system",
RunE: serpent.Executor(shaft.Module(
withReadWriteOption,
shaft.Invoke(func(
hfs *enigma.Fs, args serpent.CommandArgs,
) error {
var writers []io.Writer
extraMode := os.O_TRUNC
if teeAppendMode {
extraMode = os.O_APPEND
}
for _, name := range args {
f, err := hfs.OpenFile(name,
os.O_RDWR|os.O_CREATE|extraMode, teePerm)
if err != nil {
return err
}
defer func() { _ = f.Close() }()
writers = append(writers, f)
}
writers = append(writers, os.Stdout)
writer := io.MultiWriter(writers...)
_, err := io.Copy(writer, os.Stdin)
return err
}),
)).RunE,
}
func init() {
cmdTee.PersistentFlags().BoolVarP(
&teeAppendMode, "append", "a", teeAppendMode,
"append to the given files insted of overwriting")
rootCmd.AddCommand(cmdTee)
}
var cmdCat = &cobra.Command{
Use: "cat",
Short: "cat command for enigma file system",
RunE: serpent.Executor(shaft.Module(
shaft.Invoke(func(
hfs *enigma.Fs, args serpent.CommandArgs,
) error {
for _, name := range args {
f, err := hfs.Open(name)
if err != nil {
return err
}
defer func() { _ = f.Close() }()
if _, err := io.Copy(os.Stdout, f); err != nil {
return err
}
}
return nil
}),
)).RunE,
}
func init() {
rootCmd.AddCommand(cmdCat)
}
var (
rmRecursive bool
)
var cmdRm = &cobra.Command{
Use: "rm",
Short: "rm command for enigma file system",
RunE: serpent.Executor(shaft.Module(
withReadWriteOption,
shaft.Invoke(func(
hfs *enigma.Fs, args serpent.CommandArgs,
) error {
remove := hfs.Remove
if rmRecursive {
remove = hfs.RemoveAll
}
for _, name := range args {
if err := remove(name); err != nil {
return err
}
}
return nil
}),
)).RunE,
}
func init() {
cmdRm.PersistentFlags().BoolVarP(
&rmRecursive, "recursive", "r", rmRecursive,
"remove directories and their contents recursively")
rootCmd.AddCommand(cmdRm)
}
var (
mvMerge bool
)
var cmdMv = &cobra.Command{
Use: "mv",
Short: "mv command for enigma file system",
Args: cobra.ExactArgs(2),
RunE: serpent.Executor(shaft.Module(
withReadWriteOption,
shaft.Invoke(func(
hfs *enigma.Fs, args serpent.CommandArgs,
) error {
move := hfs.Rename
if mvMerge {
move = hfs.Merge
}
return move(args[0], args[1])
}),
)).RunE,
}
func init() {
cmdMv.PersistentFlags().BoolVarP(
&mvMerge, "merge", "m", mvMerge,
"merge the source dir to the destination dir")
rootCmd.AddCommand(cmdMv)
}
var (
lsLongList bool
lsLineStart = []byte("\xff")
lsLineColumn = []byte("\xff\v\xff")
lsLineEnd = []byte("\xff\n")
)
func listName(infos []os.FileInfo) error {
for _, info := range infos {
fmt.Println(info.Name())
}
return nil
}
func listFull(infos []os.FileInfo) error {
tabWriter := tabwriter.NewWriter(os.Stdout, 1, 1, 1, ' ', 0)
defer func() { _ = tabWriter.Flush() }()
var lines [][]string
now := time.Now()
for _, info := range infos {
var line []string
line = append(line, info.Mode().String())
line = append(line, fmt.Sprintf("%d", info.Size()))
modTime := info.ModTime()
timeFormat := "Jan _2 15:04"
if modTime.Year() != now.Year() {
timeFormat = "Jan _2 2006"
}
line = append(line, modTime.Format(timeFormat))
line = append(line, info.Name())
lines = append(lines, line)
}
for _, line := range lines {
if _, err := tabWriter.Write(lsLineStart); err != nil {
return err
}
for _, col := range line {
if _, err := tabWriter.Write([]byte(col)); err != nil {
return err
}
if _, err := tabWriter.Write(lsLineColumn); err != nil {
return err
}
}
if _, err := tabWriter.Write(lsLineEnd); err != nil {
return err
}
}
return nil
}
var cmdLs = &cobra.Command{
Use: "ls",
Short: "ls command for enigma file system",
RunE: serpent.Executor(shaft.Module(
shaft.Invoke(func(
hfs *enigma.Fs, args serpent.CommandArgs,
) error {
if len(args) == 0 {
args = serpent.CommandArgs([]string{"/"})
}
var files []os.FileInfo
var dirs []string
for _, arg := range args {
info, err := hfs.Stat(arg)
if err != nil {
return err
}
if info.IsDir() {
dirs = append(dirs, arg)
} else {
files = append(files, info)
}
}
list := listName
if lsLongList {
list = listFull
}
if len(files) != 0 {
if err := list(files); err != nil {
return err
}
}
if len(files) == 0 && len(dirs) == 1 {
infos, err := afero.ReadDir(hfs, dirs[0])
if err != nil {
return err
}
return list(infos)
}
firstLine := len(files) == 0
for _, dir := range dirs {
if firstLine {
firstLine = false
} else {
fmt.Println("")
}
infos, err := afero.ReadDir(hfs, dir)
if err != nil {
return err
}
fmt.Printf("%s:\n", dir)
if err := list(infos); err != nil {
return err
}
}
return nil
}),
)).RunE,
}
func init() {
cmdLs.PersistentFlags().BoolVarP(
&lsLongList, "long-list", "l", lsLongList,
"use a long listing format")
rootCmd.AddCommand(cmdLs)
}
var (
findNamePattern string
findType string
)
var cmdFind = &cobra.Command{
Use: "find",
Short: "find command for enigma file system",
Args: cobra.ExactArgs(1),
RunE: serpent.Executor(shaft.Module(
shaft.Invoke(func(
hfs *enigma.Fs, args serpent.CommandArgs,
) error {
if findNamePattern != "" {
if _, err := filepath.Match(
findNamePattern, "/"); err != nil {
return err
}
}
if findType != "" {
if remain := strings.Trim(
findType, "fd"); remain != "" {
return errors.Errorf("unknown type %q", remain)
}
}
return afero.Walk(hfs, args[0], func(
path string, info os.FileInfo, err error,
) error {
if err != nil {
return err
}
if findNamePattern != "" {
if ok, _ := filepath.Match(
findNamePattern, info.Name()); !ok {
return nil
}
}
if findType != "" {
fileType := "f"
if info.IsDir() {
fileType = "d"
}
if !strings.Contains(findType, fileType) {
return nil
}
}
fmt.Println(path)
return nil
})
}),
)).RunE,
}
func init() {
cmdFind.PersistentFlags().StringVar(
&findNamePattern, "name", findNamePattern,
"specify glob pattern for file name")
cmdFind.PersistentFlags().StringVar(
&findType, "type", findType,
"specify acceptable file types")
rootCmd.AddCommand(cmdFind)
}