feat: add --show-mtime (-M) option

fixes #242

6 files changed, 27 insertions, 0 deletions

diff --git a/README.md b/README.md
index b1c0ec9..b2da1ac 100644
--- a/README.md
+++ b/README.md
@@ -65,6 +65,7 @@ Flags:
   -a, --show-apparent-size            Show apparent size
   -d, --show-disks                    Show all mounted disks
   -C, --show-item-count               Show number of items in directory
+  -M, --show-mtime                    Show latest mtime of items in directory
   -B, --show-relative-size            Show relative size
       --si                            Show sizes with decimal SI prefixes (kB, MB, GB) instead of binary prefixes (KiB, MiB, GiB)
       --storage-path string           Path to persistent key-value storage directory (default is /tmp/badger) (default "/tmp/badger")
diff --git a/cmd/gdu/app/app.go b/cmd/gdu/app/app.go
index 96bc77e..6007cab 100644
--- a/cmd/gdu/app/app.go
+++ b/cmd/gdu/app/app.go
@@ -57,6 +57,7 @@ type Flags struct {
 	ShowRelativeSize   bool     `yaml:"show-relative-size"`
 	ShowVersion        bool     `yaml:"-"`
 	ShowItemCount      bool     `yaml:"show-item-count"`
+	ShowMTime          bool     `yaml:"show-mtime"`
 	NoColor            bool     `yaml:"no-color"`
 	NoMouse            bool     `yaml:"no-mouse"`
 	NonInteractive     bool     `yaml:"non-interactive"`
@@ -277,6 +278,11 @@ func (a *App) createUI() (UI, error) {
 				ui.SetShowItemCount()
 			})
 		}
+		if a.Flags.ShowMTime {
+			opts = append(opts, func(ui *tui.UI) {
+				ui.SetShowMTime()
+			})
+		}
 		if a.Flags.NoDelete {
 			opts = append(opts, func(ui *tui.UI) {
 				ui.SetNoDelete()
diff --git a/cmd/gdu/main.go b/cmd/gdu/main.go
index 4b40fad..f35e641 100644
--- a/cmd/gdu/main.go
+++ b/cmd/gdu/main.go
@@ -67,6 +67,7 @@ func init() {
 	flags.BoolVarP(&af.ShowRelativeSize, "show-relative-size", "B", false, "Show relative size")
 	flags.BoolVarP(&af.NoColor, "no-color", "c", false, "Do not use colorized output")
 	flags.BoolVarP(&af.ShowItemCount, "show-item-count", "C", false, "Show number of items in directory")
+	flags.BoolVarP(&af.ShowMTime, "show-mtime", "M", false, "Show latest mtime of items in directory")
 	flags.BoolVarP(&af.NonInteractive, "non-interactive", "n", false, "Do not run in interactive mode")
 	flags.BoolVarP(&af.NoProgress, "no-progress", "p", false, "Do not show progress in non-interactive mode")
 	flags.BoolVarP(&af.Summarize, "summarize", "s", false, "Show only a total in non-interactive mode")
diff --git a/gdu.1.md b/gdu.1.md
index 2ffd8b1..62af793 100644
--- a/gdu.1.md
+++ b/gdu.1.md
@@ -58,6 +58,8 @@ non-interactive mode
 
 **-C**, **\--show-item-count**\[=false\] Show number of items in directory
 
+**-M**, **\--show-mtime**\[=false\] Show latest mtime of items in directory
+
 **\--si**\[=false\] Show sizes with decimal SI prefixes (kB, MB, GB) instead of binary prefixes (KiB, MiB, GiB)
 
 **\--no-prefix**\[=false\] Show sizes as raw numbers without any prefixes (SI or binary) in non-interactive mode
diff --git a/tui/tui.go b/tui/tui.go
index eae3d6d..c895d3e 100644
--- a/tui/tui.go
+++ b/tui/tui.go
@@ -257,6 +257,11 @@ func (ui *UI) SetShowItemCount() {
 	ui.showItemCount = true
 }
 
+// SetShowMTime sets the flag to show last modification time of items in directory
+func (ui *UI) SetShowMTime() {
+	ui.showMtime = true
+}
+
 // SetNoDelete disables all write operations
 func (ui *UI) SetNoDelete() {
 	ui.noDelete = true
diff --git a/tui/tui_test.go b/tui/tui_test.go
index 46821ec..0e80d7a 100644
--- a/tui/tui_test.go
+++ b/tui/tui_test.go
@@ -760,6 +760,18 @@ func TestSetShowItemCount(t *testing.T) {
 	assert.Equal(t, ui.showItemCount, true)
 }
 
+func TestSetShowMTime(t *testing.T) {
+	simScreen := testapp.CreateSimScreen()
+	defer simScreen.Fini()
+
+	app := testapp.CreateMockedApp(true)
+	ui := CreateUI(app, simScreen, &bytes.Buffer{}, false, true, false, false, false)
+
+	ui.SetShowMTime()
+
+	assert.Equal(t, ui.showMtime, true)
+}
+
 func TestNoDelete(t *testing.T) {
 	simScreen := testapp.CreateSimScreen()
 	defer simScreen.Fini()