pkg/mmv
1
0
Fork 0
mirror of https://github.com/itchyny/mmv.git synced 2025-12-26 22:24:58 +08:00
Code Issues Projects Releases Packages Wiki Activity Actions

add --dry-run option

Browse source
This commit is contained in:
Wenxuan Zhang 2020-01-09 17:59:52 +08:00
parent 407f4d2b0c
commit 8cd5297856
3 changed files with 13 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

8
cmd/mmv/main.go
View file

@ -48,7 +48,9 @@ Options:
fs.PrintDefaults()
}
var showVersion bool
var dryRun bool
fs.BoolVar(&showVersion, "version", false, "print version")
fs.BoolVar(&dryRun, "dry-run", false, "only show the operation that would have been performed")
if err := fs.Parse(args); err != nil {
if err == flag.ErrHelp {
return exitCodeOK
@ -64,14 +66,14 @@ Options:
fmt.Fprintf(os.Stderr, "usage: %s file ...\n", name)
return exitCodeErr
}
if err := rename(args); err != nil {
if err := rename(args, dryRun); err != nil {
fmt.Fprintf(os.Stderr, "%s: %s\n", name, err)
return exitCodeErr
}
return exitCodeOK
}
func rename(args []string) error {
func rename(args []string, dryRun bool) error {
xs := make(map[string]bool, len(args))
for _, src := range args {
if xs[src] {
@ -122,5 +124,5 @@ func rename(args []string) error {
for i, src := range args {
files[src] = got[i]
}
return mmv.Rename(files)
return mmv.Rename(files, dryRun)
}

8
mmv.go
View file

@ -8,11 +8,17 @@ import (
)
// Rename multiple files.
func Rename(files map[string]string) error {
func Rename(files map[string]string, dryRun bool) error {
rs, err := buildRenames(files)
if err != nil {
return err
}
if dryRun {
for _, r := range rs {
fmt.Printf("%s => %s\n", r.src, r.dst)
}
return nil
}
for i, r := range rs {
if err := doRename(r.src, r.dst); err != nil {
// undo on error not to leave the temporary files

2
mmv_test.go
View file

@ -307,7 +307,7 @@ func TestRename(t *testing.T) {
require.NoError(t, setupFiles(tc.contents))
rs, _ := buildRenames(clone(tc.files))
assert.Equal(t, tc.count, len(rs))
err = Rename(tc.files)
err = Rename(tc.files, false)
if tc.err == "" {
assert.NoError(t, err)
} else {