From ee034271025b809f64b8dcf17a6862e725fa2293 Mon Sep 17 00:00:00 2001
From: Sema <jazz-dev@jazz-soft.net>
Date: Sun, 24 Mar 2024 01:01:03 -0400
Subject: [PATCH] Add compound messages

---
 javascript/JZZ.midi.SMF.js | 31 ++++++++++++++++++++++++++-----
 package.json               |  6 +++---
 test/mocha.js              | 11 +++++++++++
 3 files changed, 40 insertions(+), 8 deletions(-)

diff --git a/javascript/JZZ.midi.SMF.js b/javascript/JZZ.midi.SMF.js
index 301f912..5c18822 100644
--- a/javascript/JZZ.midi.SMF.js
+++ b/javascript/JZZ.midi.SMF.js
@@ -784,19 +784,40 @@
     }
     return a.join('\n  ');
   };
-
+  function _msg(msg) {
+    if (msg.length || msg.isSMF()) return msg;
+    _error('Not a MIDI message');
+  }
   MTrk.prototype.add = function(t, msg) {
     t = parseInt(t);
     if(isNaN(t) || t < 0) _error('Invalid parameter');
-    msg = JZZ.MIDI(msg);
-    msg.tt = t;
+    var i, j, a;
+    try {
+      a = [_msg(JZZ.MIDI(msg))];
+    }
+    catch (e) {
+      try {
+        a = [];
+        for (i = 0; i < msg.length; i++) {
+          a.push(_msg(JZZ.MIDI(msg[i])));
+        }
+        if (!i) throw e;
+      }
+      catch (ee) {
+        throw i ? ee : e;
+      }
+    }
     if (this[this._orig.length - 1].tt < t) this[this._orig.length - 1].tt = t; // end of track
     if (msg.ff == 0x2f || msg[0] > 0xf0 && msg[0] != 0xf7) return this;
-    var i;
     for (i = 0; i < this._orig.length - 1; i++) {
       if (this._orig[i].tt > t) break;
     }
-    this._orig.splice(i, 0, msg);
+    for (j = 0; j < a.length; j++) {
+      msg = a[j];
+      msg.tt = t;
+      this._orig.splice(i, 0, msg);
+      i++;
+    }
     return this;
   };
 
diff --git a/package.json b/package.json
index 6154104..42c179d 100644
--- a/package.json
+++ b/package.json
@@ -25,12 +25,12 @@
     "grunt": "^1.6.1",
     "grunt-contrib-jshint": "^3.2.0",
     "grunt-contrib-uglify": "^5.2.2",
-    "jzz-gui-player": "^1.7.1",
-    "jzz-midi-gm": "^1.3.5",
+    "jzz-gui-player": "^1.7.2",
+    "jzz-midi-gm": "^1.3.6",
     "jzz-synth-tiny": "^1.3.8",
     "mocha": "^10.3.0",
     "nyc": "^15.1.0",
-    "test-midi-files": "^1.0.4"
+    "test-midi-files": "^1.0.5"
   },
   "runkitExampleFilename": "runkit.js",
   "repository": {
diff --git a/test/mocha.js b/test/mocha.js
index f526fa7..7dd0529 100644
--- a/test/mocha.js
+++ b/test/mocha.js
@@ -105,11 +105,22 @@ describe('functions', function() {
     assert.equal(chk.type, 'fake');
     assert.equal(trk.type, 'MTrk');
   });
+  it('add', function() {
+    var t = new JZZ.MIDI.SMF.MTrk();
+    t.add(10, JZZ.MIDI.bank(0, 1, 2));
+    assert.equal(t[0].toString(), 'b0 00 01 -- Bank Select MSB');
+    assert.equal(t[1].toString(), 'b0 20 02 -- Bank Select LSB');
+  });
   it('throw', function() {
     assert.throws(function() { trk.add(); });
+    assert.throws(function() { trk.add(0); });
+    assert.throws(function() { trk.add(0, 'dummy'); });
+    assert.throws(function() { trk.add(0, []); });
+    assert.throws(function() { trk.add(0, [[0x80, 0, 0], []]); });
     assert.throws(function() { trk.tick(); });
     assert.throws(function() { trk.ch(-1); });
     assert.throws(function() { trk.sxId(-1); });
+    trk.add(0, [[0x80, 0, 0], []])
   });
   it('validate', function() {
     var smf = new JZZ.MIDI.SMF(1);