From 7eabb39c54b96fca347a0576f501239d89bd8ec6 Mon Sep 17 00:00:00 2001
From: Sergey Matveev <stargrave@stargrave.org>
Date: Fri, 22 Jan 2021 13:57:34 +0300
Subject: [PATCH] cleanup -dry-run

---
 cleanup.go    | 27 ++++++++++++++++++++-------
 doc/news.texi |  7 +++++++
 usage.go      |  4 ++--
 3 files changed, 29 insertions(+), 9 deletions(-)

diff --git a/cleanup.go b/cleanup.go
index 2c4268c..61f028f 100644
--- a/cleanup.go
+++ b/cleanup.go
@@ -18,6 +18,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 package main
 
 import (
+	"flag"
 	"fmt"
 	"io"
 	"log"
@@ -33,6 +34,10 @@ const (
 	CleanupTmp  = "tmp"
 )
 
+var (
+	DryRun = flag.Bool("dry-run", false, "do no delete files during cleanup, just show them")
+)
+
 func redoDirClean(root, what string) error {
 	root, err := filepath.Abs(root)
 	if err != nil {
@@ -57,15 +62,19 @@ func redoDirClean(root, what string) error {
 			case CleanupLog:
 				if strings.HasSuffix(fi.Name(), LogSuffix) {
 					fmt.Println(pth)
-					if err = os.Remove(pth); err != nil {
-						return err
+					if !*DryRun {
+						if err = os.Remove(pth); err != nil {
+							return err
+						}
 					}
 				}
 			case CleanupTmp:
 				if strings.HasPrefix(fi.Name(), TmpPrefix) {
 					fmt.Println(pth)
-					if err = os.Remove(pth); err != nil {
-						return err
+					if !*DryRun {
+						if err = os.Remove(pth); err != nil {
+							return err
+						}
 					}
 				}
 			default:
@@ -101,7 +110,9 @@ func cleanupWalker(root, what string) error {
 				if fi.Name() == RedoDir {
 					if what == CleanupFull {
 						fmt.Println(pthRel)
-						err = os.RemoveAll(pth)
+						if !*DryRun {
+							err = os.RemoveAll(pth)
+						}
 					} else {
 						err = redoDirClean(pth, what)
 					}
@@ -116,8 +127,10 @@ func cleanupWalker(root, what string) error {
 			if (what == CleanupTmp || what == CleanupFull) &&
 				strings.HasPrefix(fi.Name(), TmpPrefix) {
 				fmt.Println(pthRel)
-				if err = os.Remove(pth); err != nil {
-					return err
+				if !*DryRun {
+					if err = os.Remove(pth); err != nil {
+						return err
+					}
 				}
 			}
 		}
diff --git a/doc/news.texi b/doc/news.texi
index 3d5a651..99faeda 100644
--- a/doc/news.texi
+++ b/doc/news.texi
@@ -1,6 +1,13 @@
 @node News
 @unnumbered News
 
+@anchor{Release 1.1.0}
+@section Release 1.1.0
+@itemize
+@item
+    @command{redo-cleanup} has @option{-dry-run} option.
+@end itemize
+
 @anchor{Release 1.0.0}
 @section Release 1.0.0
 @itemize
diff --git a/usage.go b/usage.go
index 5948b69..d31db40 100644
--- a/usage.go
+++ b/usage.go
@@ -26,7 +26,7 @@ import (
 )
 
 const (
-	Version  = "1.0.0"
+	Version  = "1.1.0"
 	Warranty = `This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, version 3 of the License.
@@ -61,7 +61,7 @@ You can create them by running: goredo -symlinks.
   forcefully and *sequentially* build specified targets
 * redo-always
   always build current target. Unusable outside .do
-* redo-cleanup {full,log,tmp} [...]
+* redo-cleanup [-dry-run] {full,log,tmp} [...]
   remove either all goredo's related temporary files, or kept stderr
   logs, or everything (including .redo directories) related
 * redo-dot target [...]
-- 
2.44.0