ssb: Update emojis.json, and add a script to regenerate it.

tools/emojis.py

@@ -0,0 +1,30 @@
+#!/usr/bin/env python3
+
+import json
+import os
+import re
+import urllib.request
+
+if not os.path.exists('out/emoji-test.txt'):
+    urllib.request.urlretrieve('https://unicode.org/Public/emoji/latest/emoji-test.txt', 'out/emoji-test.txt')
+
+doc = {}
+
+with open('out/emoji-test.txt', 'r') as f:
+    for line in f:
+        line = line.strip()
+        if line.startswith('# group: '):
+            group = line[len('# group: '):]
+        elif line.startswith('# subgroup: '):
+            subgroup = line[len('# subgroup: '):]
+        else:
+            m = re.match(r'((?:\s?[0-9A-F]+)+)\s+;.*#.*E\d+\.\d+ (.*)', line)
+            if m:
+                emoji = ''.join(chr(int(g, 16)) for g in m.group(1).split(' '))
+                name = m.group(2)
+                if not group in doc:
+                    doc[group] = {}
+                doc[group][name] = emoji
+
+with open('apps/ssb/emojis.json', 'w') as f:
+    json.dump(doc, f, ensure_ascii = False)