Add flag to limit the length of the titlenew-fmt

2 files changed, 10 insertions, 1 deletions

diff --git a/README.md b/README.md
index 0a8712c..b617c52 100644
--- a/README.md
+++ b/README.md
@@ -60,6 +60,7 @@ When running, the program will pipe out json in waybar's format. Add something l
 Usage of ./waybar-mpris:
       --autofocus               Auto switch to currently playing music players.
       --interpolate             Interpolate track position (helpful for players that don't update regularly, e.g mpDris2)
+      --max-title int           Maximum length of title. If the title's longer N-3 characters will be printed and ... will be printed at the end. (default 70)
       --pause string            Pause symbol/text to use. (default "\uf8e3")
       --play string             Play symbol/text to use. (default "▶")
       --replace                 Replace existing waybar-mpris if found. When false, new instance will clone the original instances output.
@@ -83,6 +84,7 @@ Usage of ./waybar-mpris:
 * `--autofocus` makes waybar-mpris automatically focus on currently playing music players.
 * `--position` enables the display of the track position.
 * `--interpolate` increments the track position every second. This is useful for players (e.g mpDris2) that don't regularly update the position.
+* `--max-title` the maximum number of characters before the title cuts off.
 * `--replace`: By default, new instances will attach to the existing one so that the output is identical. This lets this instance replace any others running. It isn't recommended. 
 * `--send` sends commands to an already running waybar-mpris instance via a unix socket. Commands:
   * `player-next`: Switch to displaying and controlling next available player.
diff --git a/main.go b/main.go
index 4593ca2..7597155 100644
--- a/main.go
+++ b/main.go
@@ -41,6 +41,7 @@ var (
 	replace                           = false
 	isSharing                         = false
 	isDataSharing                     = false
+	maxTitleLen                       = 70
 	writer                  io.Writer = os.Stdout
 	shareWriter, dataWriter io.Writer
 )
@@ -184,7 +185,11 @@ func formatOutput(p *player, icon string, fstr string) string {
 			case tokAlbum:
 				buf = append(buf, []byte(p.Album)...)
 			case tokTitle:
-				buf = append(buf, []byte(p.Title)...)
+				title := p.Title
+				if maxTitleLen > 0 && len(title) > maxTitleLen {
+					title = title[:maxTitleLen-3] + "..."
+				}
+				buf = append(buf, []byte(title)...)
 			case tokPosition:
 				position := secondsToString(int(p.Position / 1000000))
 				buf = append(buf, []byte(position)...)
@@ -571,6 +576,8 @@ func main() {
 		"Interpolate track position (helpful for players that don't update regularly, e.g mpDris2)")
 	flag.BoolVar(&replace, "replace", replace,
 		"Replace existing waybar-mpris if found. When false, new instance will clone the original instances output.")
+	flag.IntVar(&maxTitleLen, "max-title", maxTitleLen,
+		"Maximum length of title. If the title's longer N-3 characters will be printed and ... will be printed at the end.")
 	var command string
 	flag.StringVar(&command, "send", "", "send command to already runnning waybar-mpris instance. (options: "+strings.Join(commands, "/")+")")