ref: d9fb7e59bdca8b0ee7d1327100d39bb28d013092
parent: 2d9ab829125a3e9d2bc031cf6b2d842f52557e67
author: Bryan Bishop <kanzure@gmail.com>
date: Thu Jan 5 22:22:53 EST 2012
a prototype of a script to parse text scripts hg-commit-id: e879fc3b59e3
--- /dev/null
+++ b/extras/analyze_texts.py
@@ -1,0 +1,118 @@
+#!/usr/bin/python
+#author: Bryan Bishop <kanzure@gmail.com>
+#date: 2012-01-06
+#analyze texts, how many commands are unknown?
+import extract_maps
+from pretty_map_headers import map_name_cleaner
+from operator import itemgetter
+
+#how many times is each command byte called?
+totals = {}+total_text_commands = 0
+should_be_total = 0
+
+def get_text_pointer(texts_pointer, text_id):
+ if type(texts_pointer) == str: texts_pointer = int(texts_pointer, 16)
+ if type(text_id) == str: text_id = int(text_id)
+
+ byte1 = ord(extract_maps.rom[texts_pointer + (2*text_id)])
+ byte2 = ord(extract_maps.rom[texts_pointer + (2*text_id) + 1])
+ pointer = (byte1 + (byte2 << 8))
+
+ return pointer
+
+def how_many_until(byte, starting):
+ index = extract_maps.rom.find(byte, starting)
+ return index-starting
+
+def parse_text_script(text_pointer):
+ offset = text_pointer
+ commands = {}+ command_counter = 0
+ global total_text_commands
+
+ end = False
+ while not end:
+ command = {}+ command_byte = ord(extract_maps.rom[offset])
+
+ if command_byte == 0:
+ #read until $57
+ jump = how_many_until(str(57), offset)
+ end_address = offset + jump
+
+ command = {"type": command_byte,+ "start_address": offset,
+ "end_address": end_address,
+ "size": jump,
+ }
+
+ offset += end_address + 1
+ if not 0x0 in totals.keys(): totals[0x0] = 1
+ else: totals[0x0] += 1
+ total_text_commands += 1
+ elif command_byte == 0x17:
+ #TX_FAR [pointer][bank]
+ pointer_byte1 = ord(extract_maps.rom[offset+1])
+ pointer_byte2 = ord(extract_maps.rom[offset+2])
+ pointer_bank = ord(extract_maps.rom[offset+3])
+
+ pointer = (pointer_byte1 + (pointer_byte2 << 8))
+ pointer = extract_maps.calculate_pointer(pointer, pointer_bank)
+
+ command = {"type": command_byte,+ "start_address": offset,
+ "end_address": offset + 3,
+ "pointer": pointer,
+ }
+
+ offset += 3
+ if not 0x17 in totals.keys(): totals[0x17] = 1
+ else: totals[0x17] += 1
+ total_text_commands += 1
+ else:
+ if not command_byte in totals.keys(): totals[command_byte] = 1
+ else: totals[command_byte] += 1
+ total_text_commands += 1
+
+ end = True
+
+ break
+
+ commands[command_counter] = command
+ command_counter += 1
+ return commands
+
+def analyze_texts():
+ global should_be_total
+
+ texts = {}+ for map_id in extract_maps.map_headers:
+ if map_id in extract_maps.bad_maps: continue #skip
+ map = extract_maps.map_headers[map_id]
+ map["texts"] = {}+ referenced_texts = map["referenced_texts"]
+ should_be_total += len(referenced_texts)
+ texts_pointer = int(map["texts_pointer"], 16)
+
+ for text_id in referenced_texts:
+ #print "Working on map id=" + str(map["id"]) + " and text id=" + str(text_id)
+ text_pointer = get_text_pointer(texts_pointer, text_id)
+ commands = parse_text_script(text_pointer)
+ map["texts"][text_id] = commands
+
+ texts[map_id] = map["texts"]
+ extract_maps.map_headers[map_id]["texts"] = map["texts"]
+ return texts
+
+if __name__ == "__main__":
+ extract_maps.load_rom()
+ extract_maps.load_map_pointers()
+ extract_maps.read_all_map_headers()
+ print analyze_texts()
+
+ print "\n\n---- stats ----\n\n"
+ popular_text_commands = sorted(totals.iteritems(), key=itemgetter(1), reverse=True)
+ print "popular text commands: " + str(popular_text_commands)
+ print "total text commands: " + str(total_text_commands)
+ print "total text scripts: " + str(should_be_total)