modify showinfo to handle multiple values

Mentioned in #39.

comp.go

@@ -65,10 +65,10 @@ var (
 		"ifs",
 		"previewer",
 		"shell",
-		"showinfo",
 		"sortby",
 		"timefmt",
 		"ratios",
+		"showinfo",
 	}
 )
 

doc.go

@@ -58,10 +58,10 @@ The following options can be used to customize the behavior of lf:
 	ifs        string  (default "") (not exported if empty)
 	previewer  string  (default "") (not filtered if empty)
 	shell      string  (default "/bin/sh")
-	showinfo   string  (default "none")
 	sortby     string  (default "natural")
 	timefmt    string  (default "Mon Jan _2 15:04:05 2006")
 	ratios     string  (default "1:2:3")
+	showinfo   string  (default "")
 
 The following variables are exported for shell commands:
 

docstring.go

@@ -62,10 +62,10 @@ The following options can be used to customize the behavior of lf:
     ifs        string  (default "") (not exported if empty)
     previewer  string  (default "") (not filtered if empty)
     shell      string  (default "/bin/sh")
-    showinfo   string  (default "none")
     sortby     string  (default "natural")
     timefmt    string  (default "Mon Jan _2 15:04:05 2006")
     ratios     string  (default "1:2:3")
+    showinfo   string  (default "")
 
 The following variables are exported for shell commands:
 

etc/lfrc.example

@@ -21,12 +21,13 @@ map zp set preview!
 map zh set hidden!
 
 # easily select what information to show
-map zn set showinfo none
+map zn set showinfo
 map zs set showinfo size
 map zt set showinfo time
+map za set showinfo size:time
 
 # sort files and show the corresponding info
-map sn :set sortby name; set showinfo none
+map sn :set sortby name; set showinfo
 map ss :set sortby size; set showinfo size
 map st :set sortby time; set showinfo time
 

eval.go

@@ -86,14 +86,6 @@ func (e *setExpr) eval(app *app, args []string) {
 		gOpts.previewer = strings.Replace(e.val, "~", envHome, -1)
 	case "shell":
 		gOpts.shell = e.val
-	case "showinfo":
-		if e.val != "none" && e.val != "size" && e.val != "time" {
-			msg := "showinfo should either be 'none', 'size' or 'time'"
-			app.ui.message = msg
-			log.Print(msg)
-			return
-		}
-		gOpts.showinfo = e.val
 	case "sortby":
 		if e.val != "natural" && e.val != "name" && e.val != "size" && e.val != "time" {
 			msg := "sortby should either be 'natural', 'name', 'size' or 'time'"
@@ -121,6 +113,17 @@ func (e *setExpr) eval(app *app, args []string) {
 		gOpts.ratios = rats
 		app.ui.wins = getWins()
 		app.ui.loadFile(app.nav)
+	case "showinfo":
+		toks := strings.Split(e.val, ":")
+		for _, s := range toks {
+			if s != "" && s != "size" && s != "time" {
+				msg := "showinfo should consist of 'size' or 'time' separated with colon"
+				app.ui.message = msg
+				log.Print(msg)
+				return
+			}
+		}
+		gOpts.showinfo = toks
 	default:
 		msg := fmt.Sprintf("unknown option: %s", e.opt)
 		app.ui.message = msg

opts.go

@@ -13,10 +13,10 @@ var gOpts struct {
 	ifs       string
 	previewer string
 	shell     string
-	showinfo  string
 	sortby    string
 	timefmt   string
 	ratios    []int
+	showinfo  []string
 	keys      map[string]expr
 	cmds      map[string]expr
 }
@@ -30,10 +30,10 @@ func init() {
 	gOpts.tabstop = 8
 	gOpts.filesep = ":"
 	gOpts.shell = "/bin/sh"
-	gOpts.showinfo = "none"
 	gOpts.sortby = "natural"
 	gOpts.timefmt = time.ANSIC
 	gOpts.ratios = []int{1, 2, 3}
+	gOpts.showinfo = nil
 
 	gOpts.keys = make(map[string]expr)
 

ui.go

@@ -286,30 +286,25 @@ func (win *win) printd(dir *dir, marks map[string]int, saves map[string]bool) {
 			}
 		}
 
-		switch gOpts.showinfo {
-		case "none":
-			break
+		var info string
+
+		for _, s := range gOpts.showinfo {
+			switch s {
 			case "size":
-			if win.w > 8 {
-				h := humanize(f.Size())
-				s = runeSliceWidthRange(s, 0, win.w-3-len(h))
-				s = append(s, ' ')
-				for _, r := range h {
-					s = append(s, r)
-				}
-			}
+				info = fmt.Sprintf("%s %4s", info, humanize(f.Size()))
 			case "time":
-			if win.w > 24 {
-				t := f.ModTime().Format("Jan _2 15:04")
-				s = runeSliceWidthRange(s, 0, win.w-3-len(t))
-				s = append(s, ' ')
-				for _, r := range t {
+				info = fmt.Sprintf("%s %12s", info, f.ModTime().Format("Jan _2 15:04"))
+			default:
+				log.Printf("unknown showinfo type: %s", s)
+			}
+		}
+
+		if len(info) > 0 && win.w > 2*len(info) {
+			s = runeSliceWidthRange(s, 0, win.w-2-len(info))
+			for _, r := range info {
 				s = append(s, r)
 			}
 		}
-		default:
-			log.Printf("unknown showinfo type: %s", gOpts.showinfo)
-		}
 
 		// TODO: add a trailing '~' to the name if cut