Enhance keySyms

* Direct translate from X.Org's xproto/keysymdef.h
* Adds the key description as JSON data
* Update examples where the `x11.keySyms` API changes

examples/kbdheatmap/kbdheatmap.js

@@ -12,7 +12,7 @@ var ButtonRelease = x11.eventMask.ButtonRelease;
 // image and coords file from http://www.patrick-wied.at/projects/heatmap-keyboard/
 // TODO: add simple tool to use&tag coords in own keyboard photo
 // jpeg decoder is slightly modified version of https://github.com/notmasteryet/jpgjs
-var kbdImg = require('./node-jpg').readJpeg('./keyboard.jpg');
+var kbdImg = require('./node-jpg').readJpeg(__dirname+'/keyboard.jpg');
 var keycoords = require('./coordinates');
 
 // from https://github.com/substack/node-keysym

examples/smoketest/keyboard/getkeyboardmapping.js

@@ -5,7 +5,7 @@ var keysym = require('keysym');
 var ks = x11.keySyms;
 var ks2Name = {};
 for (var key in ks)
-    ks2Name[ ks[key] ] = key;
+    ks2Name[ ks[key].code ] = key;
 var kk2Name = {};
 
 x11.createClient(function(err, display) {

examples/tetris.js

@@ -250,7 +250,7 @@ x11.createClient(function(err, display) {
     var ks = x11.keySyms;
     var ks2Name = {};
     for (var key in ks)
-        ks2Name[ ks[key] ] = key;
+        ks2Name[ ks[key].code ] = key;
     var kk2Name = {};
     var min = display.min_keycode;
     var max = display.max_keycode;

lib/keysyms.update.sh

@@ -0,0 +1,35 @@
+#!/bin/bash -e
+
+keysymdef_url=http://cgit.freedesktop.org/xorg/proto/xproto/plain/keysymdef.h
+keysymdef=$(mktemp)
+
+wget $keysymdef_url -O $keysymdef
+
+(
+echo "
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\\
+
+   This file is automatically translated from X.Org's xproto/keysymdef.h
+   Please, do not update this file with your hands, run $(basename "$0").
+
+\\* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+module.exports = {
+"
+
+sed -r '
+  s/#ifdef\s+/\/\/ Group /
+  s/#endif.*//
+  s/#define\s+([^ ]+)(\s+)([^ ]+)\s*\/\*\s*([^\*]+[^ ])\s*\*\//  \1:\2{ code: \3, description: "\4" },/
+  s/(\b)U\+([0-9A-F]+)(\b)/\1(\\u\2)\3/i
+  s/#define\s+([^ ]+)(\s+)([^ ]+)/  \1:\2{ code: \3, description: null },/
+  #s/#define\s+([^ ]+)(\s+[^ ]+)/  \1:\2,/
+' $keysymdef
+
+echo -n '
+  NoSymbol: 0
+};'
+
+) > "$(dirname "$0")/keysyms.js"
+
+rm $keysymdef