Add the Nintendo 64 cheats sript

scripts/cht64write.py

@@ -0,0 +1,67 @@
+#!/usr/bin/python
+# public domain by @bparker06
+# https://github.com/libretro/libretro-database/issues/388
+# https://raw.githubusercontent.com/mupen64plus/mupen64plus-core/master/data/mupencheat.txt
+import re, os
+
+cheatfile = ''
+cheats = ''
+game = ''
+gamefile = None
+gamefilename = ''
+cheatnum = -1
+subcheatnum = 0
+
+def slugify(value):
+    # ripped off from Django and modified
+    import unicodedata
+    value = unicodedata.normalize('NFKD', value).encode('ascii', 'ignore')
+    value = unicode(re.sub('[^\w\s\-\.\(\)]', '', value).strip())
+
+    return value
+
+with open('mupencheat.txt', 'rb') as f:
+  cheatfile = f.read()
+
+for line in cheatfile.split('\n'):
+  if line.startswith('gn '):
+    if gamefile is not None:
+      if cheatnum >= 0:
+        gamefile.write('cheats = ' + str(cheatnum + 1) + '\n')
+        gamefile.write(cheats + '\"\n')
+
+      gamefile.close()
+      gamefile = None
+      subcheatnum = 0
+      cheats = ''
+
+      if cheatnum < 0:
+        os.unlink(gamefilename)
+
+      cheatnum = -1
+
+    game = line.split('gn ')[1]
+    game = re.sub(r'^[\s*|=]', '', game)
+    gamefilename = 'cheats/' + str(slugify(unicode(game))) + '.cht'
+    gamefile = open(gamefilename, 'wb')
+  elif line.startswith(' cn '):
+    name = line.split(' cn ')[1]
+    cheatnum += 1
+
+    if subcheatnum > 0:
+      cheats += '\"\n'
+      subcheatnum = 0
+
+    cheats += 'cheat' + str(cheatnum) + '_desc = \"' + name + '\"\n'
+    cheats += 'cheat' + str(cheatnum) + '_enable = false\n'
+  elif line.startswith('  ') and not line.startswith('  cd '):
+    cheat = line.split('  ')[1]
+    cheat = re.sub(r'(\?\?\?\?).*', '\\1', cheat)
+    cheat = re.sub(r'\?\?\?\?', 'XXXX', cheat)
+
+    if subcheatnum == 0:
+      cheats += 'cheat' + str(cheatnum) + '_code = \"' + cheat
+    else:
+      cheats += ';' + cheat
+
+    subcheatnum += 1