gokcehan · gokcehan · Apr 9, 2023 · Mar 21, 2023 · Mar 21, 2023 · Mar 21, 2023
diff --git a/doc.go b/doc.go
@@ -139,6 +139,7 @@ The following options can be used to customize the behavior of lf:
 	incfilter        bool      (default false)
 	incsearch        bool      (default false)
 	info             []string  (default '')
+	ruler            []string  (default '')
 	infotimefmtnew   string    (default 'Jan _2 15:04')
 	infotimefmtold   string    (default 'Jan _2  2006')
 	mouse            bool      (default false)
@@ -744,6 +745,11 @@ List of information shown for directory items at the right side of pane.
 Currently supported information types are 'size', 'time', 'atime', and 'ctime'.
 Information is only shown when the pane width is more than twice the width of information.
 
+	ruler       []string  (default 'acc:progress:selection:ind')
+
+List of information shown in status line ruler.
+Currently supported information types are 'acc', 'progress', 'selection', 'ind' and 'df'.
+
 	infotimefmtnew string    (default 'Jan _2 15:04')
 
 Format string of the file time shown in the info column when it matches this year.

diff --git a/docstring.go b/docstring.go
diff --git a/eval.go b/eval.go
@@ -482,6 +482,21 @@ func (e *setExpr) eval(app *app, args []string) {
 			}
 		}
 		gOpts.info = toks
+	case "ruler":
+		if e.val == "" {
+			gOpts.ruler = nil
+			return
+		}
+		toks := strings.Split(e.val, ":")
+		for _, s := range toks {
+			switch s {
+			case "df", "acc", "progress", "selection", "ind", "tot":
+			default:
+				app.ui.echoerr("ruler: should consist of 'df', 'acc', 'progress', 'selection', or 'ind' separated with colon")
+				return
+			}
+		}
+		gOpts.ruler = toks
 	case "infotimefmtnew":
 		gOpts.infotimefmtnew = e.val
 	case "infotimefmtold":

diff --git a/lf.1 b/lf.1
@@ -158,6 +158,7 @@ The following options can be used to customize the behavior of lf:
     incfilter        bool      (default false)
     incsearch        bool      (default false)
     info             []string  (default '')
+    ruler            []string  (default '')
     infotimefmtnew   string    (default 'Jan _2 15:04')
     infotimefmtold   string    (default 'Jan _2  2006')
     mouse            bool      (default false)
@@ -904,6 +905,12 @@ Apply filter pattern after each keystroke during filtering.
 .PP
 List of information shown for directory items at the right side of pane. Currently supported information types are 'size', 'time', 'atime', and 'ctime'. Information is only shown when the pane width is more than twice the width of information.
 .PP
+.EX
+    ruler       []string  (default 'acc:progress:selection:ind')
+.EE
+.PP
+List of information shown in status line ruler. Currently supported information types are 'acc', 'progress', 'selection', 'ind' and 'df'.
+.PP
 .EX
     infotimefmtnew string    (default 'Jan _2 15:04')
 .EE

diff --git a/opts.go b/opts.go
@@ -74,6 +74,7 @@ var gOpts struct {
 	hiddenfiles      []string
 	history          bool
 	info             []string
+	ruler            []string
 	shellopts        []string
 	keys             map[string]expr
 	cmdkeys          map[string]expr
@@ -131,6 +132,7 @@ func init() {
 	gOpts.hiddenfiles = []string{".*"}
 	gOpts.history = true
 	gOpts.info = nil
+	gOpts.ruler = []string{"acc", "progress", "selection", "ind"}
 	gOpts.shellopts = nil
 	gOpts.sortType = sortType{naturalSort, dirfirstSort}
 	gOpts.tempmarks = "'"

diff --git a/os.go b/os.go
@@ -227,3 +227,14 @@ func exportFiles(f string, fs []string, pwd string) {
 		os.Setenv("fx", envFiles)
 	}
 }
+func diskFree(wd string) string {
+	var stat unix.Statfs_t
+
+	if err := unix.Statfs(wd, &stat); err != nil {
+		log.Printf("diskfree: %s", err)
+		return ""
+	}
+
+	// Available blocks * size per block = available space in bytes
+	return " df: " + humanize(int64(uint64(stat.Bavail)*uint64(stat.Bsize)))
+}
diff --git a/os_windows.go b/os_windows.go
@@ -181,3 +181,19 @@ func exportFiles(f string, fs []string, pwd string) {
 		os.Setenv("fx", envFiles)
 	}
 }
+
+func diskFree(wd string) string {
+	var free uint64
+
+	pathPtr, err := windows.UTF16PtrFromString(wd)
+	if err != nil {
+		log.Printf("diskfree: %s", err)
+		return ""
+	}
+	err = windows.GetDiskFreeSpaceEx(pathPtr, &free, nil, nil) // cwd, free, total, available
+	if err != nil {
+		log.Printf("diskfree: %s", err)
+		return ""
+	}
+	return " df: " + humanize(int64(free))
+}
diff --git a/ui.go b/ui.go
@@ -858,7 +858,22 @@ func (ui *ui) drawStatLine(nav *nav) {
 		progress += fmt.Sprintf("  [%d/%d]", nav.deleteCount, nav.deleteTotal)
 	}
 
-	ruler := fmt.Sprintf("%s%s%s  %d/%d", acc, progress, selection, ind, tot)
+	ruler := ""
+	for _, s := range gOpts.ruler {
+		switch s {
+		case "df":
+			ruler = fmt.Sprintf("%s%s", ruler, diskFree(dir.path))
+		case "acc":
+			ruler = fmt.Sprintf("%s%s", ruler, acc)
+		case "progress":
+			ruler = fmt.Sprintf("%s%s", ruler, progress)
+		case "selection":
+			ruler = fmt.Sprintf("%s%s", ruler, selection)
+		case "ind":
+			ruler = fmt.Sprintf("%s  %d/%d", ruler, ind, tot)
+		}
+
+	}
 
 	ui.msgWin.printRight(ui.screen, 0, st, ruler)
 }