mpd-status

commit 2d1c7dd71014cf022f2bd83cffce0b2bc9fd9599
Author: Brian C. Lane <bcl@brianlane.com>
Date:   Sat, 22 Jun 2019 10:48:07 -0700

Initial commit

Diffstat:
A
README.md
 | 
14
++++++++++++++
A
go.mod
 | 
5
+++++
A
go.sum
 | 
2
++
A
mpd-status.go
 | 
99
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

4 files changed, 120 insertions(+), 0 deletions(-)
diff --git a/README.md b/README.md
@@ -0,0 +1,14 @@
+Simple mpd status display
+
+* MPD protocol - https://www.musicpd.org/doc/html/protocol.html
+* mpd package docs - https://godoc.org/github.com/fhs/gompd/mpd
+
+Add this to the tmux status line with:
+
+    set -g status-right "#[fg=green]#(~/bin/mpd-status)#[fg=default] | [#H] %H:%M %e-%b-%g"
+
+Fields available:
+
+	STATUS- map[audio:44100:24:2 bitrate:320 consume:0 duration:223.791 elapsed:160.651 mixrampdb:0.000000 nextsong:5 nextsongid:6 playlist:2 playlistlength:19 random:1 repeat:0 single:0 song:0 songid:1 state:pause time:161:224 volume:75]
+
+	SONG- map[Album:Joe Bonamassa Live From the Royal Albert Hall AlbumArtist:Joe Bonamassa Artist:Joe Bonamassa Date:2009 Disc:1 Genre:Blues Id:1 Last-Modified:2017-10-09T18:21:04Z Pos:0 Time:224 Title:Django (Live) Track:1 duration:223.791 file:Joe Bonamassa/Live From The Royal Albert Hall/01 - Django (Live).mp3]
diff --git a/go.mod b/go.mod
@@ -0,0 +1,5 @@
+module github.com/bcl/mpd-status
+
+go 1.12
+
+require github.com/fhs/gompd v2.0.0+incompatible
diff --git a/go.sum b/go.sum
@@ -0,0 +1,2 @@
+github.com/fhs/gompd v2.0.0+incompatible h1:pv5XKTatya1k3r1woaWLwFQiF0BfAsgWSe5ev2XZ0UM=
+github.com/fhs/gompd v2.0.0+incompatible/go.mod h1:UVZXd9wmFBH5tIXLYeI+CGUIt15ZvtGQvVO6SDHy1os=
diff --git a/mpd-status.go b/mpd-status.go
@@ -0,0 +1,99 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"github.com/fhs/gompd/mpd"
+	"log"
+	"strings"
+	"time"
+	"unicode/utf8"
+)
+
+/* commandline flags */
+type cmdlineArgs struct {
+	Volume  bool // Show volume percentage 0-100
+	Elapsed bool // Show the duration:elapsed time
+	Width   int  // Maximum width
+	Debug   bool // Output debugging info
+}
+
+/* commandline defaults */
+var cfg = cmdlineArgs{
+	Volume:  false,
+	Elapsed: false,
+	Width:   60,
+	Debug:   false,
+}
+
+/* parseArgs handles parsing the cmdline args and setting values in the global cfg struct */
+func parseArgs() {
+	flag.BoolVar(&cfg.Volume, "volume", cfg.Volume, "Include the volume percentage 0-100")
+	flag.BoolVar(&cfg.Elapsed, "elapsed", cfg.Elapsed, "Include the duration:elapsed time")
+	flag.IntVar(&cfg.Width, "width", cfg.Width, "Maximum width of output")
+	flag.BoolVar(&cfg.Debug, "debug", cfg.Debug, "Output debug information")
+
+	flag.Parse()
+}
+
+func main() {
+	parseArgs()
+
+	// Connect to MPD server
+	conn, err := mpd.Dial("tcp", "localhost:6600")
+	if err != nil {
+		log.Fatalln(err)
+	}
+	defer conn.Close()
+
+	// Get the status and current song
+	status, err := conn.Status()
+	if err != nil {
+		log.Fatalln(err)
+	}
+	song, err := conn.CurrentSong()
+	if err != nil {
+		log.Fatalln(err)
+	}
+	// fmt.Printf("STATUS- %s\n", status)
+	// fmt.Printf("SONG- %s\n", song)
+
+	// Build the optional parts of the output
+	var optional strings.Builder
+	if cfg.Volume {
+		fmt.Fprintf(&optional, " %s%%", status["volume"])
+	}
+	if cfg.Elapsed {
+		duration, _ := time.ParseDuration(status["duration"] + "s")
+		elapsed, _ := time.ParseDuration(status["elapsed"] + "s")
+		fmt.Fprintf(&optional, " %s/%s", elapsed.Truncate(time.Second), duration.Truncate(time.Second))
+	}
+
+	// Build the final output string
+	var s strings.Builder
+	switch status["state"] {
+	case "play":
+		s.WriteString("▶ ")
+	case "stop":
+		s.WriteString("◼ ")
+	case "pause":
+		s.WriteString("‖ ")
+	default:
+		s.WriteString("  ")
+	}
+
+	// Build the Artist + title part (do I want to make artist optional? album?)
+	songStr := fmt.Sprintf("%s - %s", song["Artist"], song["Title"])
+
+	// Calculate how much title to trim
+	trim := cfg.Width - utf8.RuneCountInString(optional.String()) - utf8.RuneCountInString(s.String())
+	trim = utf8.RuneCountInString(songStr) - trim
+	if trim < 0 {
+		trim = 0
+	} else if trim > utf8.RuneCountInString(songStr) {
+		trim = utf8.RuneCountInString(songStr)
+	}
+
+	// Trim the title so that it will fit into the width
+	fmt.Printf("%s%s%s", s.String(), songStr[trim:], optional.String())
+}