Add gba_db_builder

.gitignore

@@ -7,5 +7,6 @@ arm9/open_agb_firm9.bin
 arm11/open_agb_firm11.bin
 arm9/open_agb_firm9.elf
 arm11/open_agb_firm11.elf
+resources/gba.xml
 open_agb_firm.firm
 open_agb_firm*.7z

resources/gba_db_builder.py

@@ -0,0 +1,72 @@
+# open_agb_firm gba_db.bin Builder
+# By HTV04
+
+# This script parses MAME's gba.xml (found here: https://github.com/mamedev/mame/blob/master/hash/gba.xml) and converts it to a gba_db.bin file for open_agb_firm.
+# This script should work with any updates to MAME's gba.xml, unless something this script expects is changed.
+
+import math
+
+import xml.etree.ElementTree as ET
+
+root = ET.parse('gba.xml').getroot()
+
+gbadb = b''
+
+for software in root.findall('software'):
+    # Obtain title
+    gbadb = gbadb + software.find('description').text.encode().ljust(200, b'\x00') # Pad to 200 bytes with null bytes
+    
+    # Obtain title ID
+    titleid = b'\x00\x00\x00\x00' # If a title ID can't be found, default to null bytes
+    for info in software.findall('info'):
+        if info.get('name') == 'serial':
+            for i in info.get('value').split('-'): # Hacky script that checks for the part of the serial that has 4 characters, since serials vary
+                s = i.strip().encode()
+                if len(s) == 4:
+                    titleid = s
+            
+            break
+    gbadb = gbadb + titleid
+    
+    for part in software.findall('part'):
+        if part.get('name') == 'cart':
+            # Obtain SHA-1
+            for dataarea in part.findall('dataarea'):
+                if dataarea.get('name') == 'rom':
+                    size = int(dataarea.get('size'), 0)
+                    
+                    gbadb = gbadb + bytes.fromhex(dataarea.find('rom').get('sha1'))
+                    
+                    break
+            
+            # Obtain save type
+            savetype = 15 # If a save type can't be found or is unknown, set to "SAVE_TYPE_NONE"
+            for feature in software.findall('feature'):
+                if feature.get('name') == 'slot':
+                    slottype = feature.get('value')
+                    if slottype == 'gba_eeprom_4k':
+                        savetype = 0 # SAVE_TYPE_EEPROM_8k
+                        if size > 16777216: # If greater than 16 MB, change save type
+                            savetype += 1 # SAVE_TYPE_EEPROM_8k_2
+                    elif slottype == 'gba_eeprom_64k':
+                        savetype = 2 # SAVE_TYPE_EEPROM_64k
+                        if size > 16777216: # If greater than 16 MB, change save type
+                            savetype += 1 # SAVE_TYPE_EEPROM_64k_2
+                    elif slottype == 'gba_flash_rtc':
+                        savetype = 8 # SAVE_TYPE_FLASH_512k_PSC_RTC
+                    elif slottype == 'gba_flash_512':
+                        savetype = 9 # SAVE_TYPE_FLASH_512k_PSC
+                    elif slottype == 'gba_flash_1m_rtc':
+                        savetype = 10 #SAVE_TYPE_FLASH_1m_MRX_RTC
+                    elif slottype == 'gba_flash_1m':
+                        savetype = 11 # SAVE_TYPE_FLASH_1m_MRX
+                    elif slottype == 'gba_sram':
+                        savetype = 14 # SAVE_TYPE_SRAM_256k
+                    
+                    break
+            
+            gbadb = gbadb + (int(math.log(size, 2)) << 27 | savetype).to_bytes(4, 'little') # Save type is stored weirdly
+
+# Create and write to gba_db.bin
+with open('gba_db.bin', 'wb') as f:
+    f.write(gbadb)