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#!/usr/bin/env python3
#
# Script to sort the game controller database entries in SDL_gamepad.c
import re
filename = "SDL_gamepad_db.h"
input = open(filename)
output = open(f"{filename}.new", "w")
parsing_controllers = False
controllers = []
controller_guids = {}
conditionals = []
split_pattern = re.compile(r'([^"]*")([^,]*,)([^,]*,)([^"]*)(".*)')
# BUS (1) CRC (3,2) VID (5,4) (6) PID (8,7) (9) VERSION (11,10) MISC (12)
standard_guid_pattern = re.compile(r'^([0-9a-fA-F]{4})([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})(0000)([0-9a-fA-F]{2})([0-9a-fA-F]{2})(0000)([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{4},)$')
# These chipsets are used in multiple controllers with different mappings,
# without enough unique information to differentiate them. e.g.
# https://github.com/gabomdq/SDL_GameControllerDB/issues/202
invalid_controllers = (
('0079', '0006', '0000'), # DragonRise Inc. Generic USB Joystick
('0079', '0006', '6120'), # DragonRise Inc. Generic USB Joystick
('04b4', '2412', 'c529'), # Flydigi Vader 2, Vader 2 Pro, Apex 2, Apex 3, Apex 4
('16c0', '05e1', '0000'), # Xinmotek Controller
)
def find_element(prefix, bindings):
i=0
for element in bindings:
if element.startswith(prefix):
return i
i=(i + 1)
return -1
def get_crc_from_entry(entry):
crc = ""
line = "".join(entry)
bindings = line.split(",")
pos = find_element("crc:", bindings)
if pos >= 0:
crc = bindings[pos][4:]
return crc
def save_controller(line):
global controllers
match = split_pattern.match(line)
entry = [ match.group(1), match.group(2), match.group(3) ]
bindings = sorted(match.group(4).split(","))
if (bindings[0] == ""):
bindings.pop(0)
name = entry[2].rstrip(',')
crc = ""
pos = find_element("crc:", bindings)
if pos >= 0:
crc = bindings[pos] + ","
bindings.pop(pos)
guid_match = standard_guid_pattern.match(entry[1])
if guid_match:
groups = guid_match.groups()
crc_value = groups[2] + groups[1]
vid_value = groups[4] + groups[3]
pid_value = groups[7] + groups[6]
version_value = groups[10] + groups[9]
#print("CRC: %s, VID: %s, PID: %s, VERSION: %s" % (crc_value, vid_value, pid_value, version_value))
if crc_value == "0000":
if crc != "":
crc_value = crc[4:-1]
else:
print("Extracting CRC from GUID of " + name)
entry[1] = groups[0] + "0000" + "".join(groups[3:])
crc = "crc:" + crc_value + ","
if (vid_value, pid_value, crc_value) in invalid_controllers:
print("Controller '%s' not unique, skipping" % name)
return
pos = find_element("type", bindings)
if pos >= 0:
bindings.insert(0, bindings.pop(pos))
pos = find_element("platform", bindings)
if pos >= 0:
bindings.insert(0, bindings.pop(pos))
pos = find_element("sdk", bindings)
if pos >= 0:
bindings.append(bindings.pop(pos))
pos = find_element("hint:", bindings)
if pos >= 0:
bindings.append(bindings.pop(pos))
entry.extend(crc)
entry.extend(",".join(bindings) + ",")
entry.append(match.group(5))
controllers.append(entry)
entry_id = entry[1] + get_crc_from_entry(entry)
if ',sdk' in line or ',hint:' in line:
conditionals.append(entry_id)
def write_controllers():
global controllers
global controller_guids
# Check for duplicates
for entry in controllers:
entry_id = entry[1] + get_crc_from_entry(entry)
if (entry_id in controller_guids and entry_id not in conditionals):
current_name = entry[2]
existing_name = controller_guids[entry_id][2]
print("Warning: entry '%s' is duplicate of entry '%s'" % (current_name, existing_name))
if (not current_name.startswith("(DUPE)")):
entry[2] = f"(DUPE) {current_name}"
if (not existing_name.startswith("(DUPE)")):
controller_guids[entry_id][2] = f"(DUPE) {existing_name}"
controller_guids[entry_id] = entry
for entry in sorted(controllers, key=lambda entry: f"{entry[2]}-{entry[1]}"):
line = "".join(entry) + "\n"
line = line.replace("\t", " ")
if not line.endswith(",\n") and not line.endswith("*/\n") and not line.endswith(",\r\n") and not line.endswith("*/\r\n"):
print("Warning: '%s' is missing a comma at the end of the line" % (line))
output.write(line)
controllers = []
controller_guids = {}
for line in input:
if parsing_controllers:
if (line.startswith("{")):
output.write(line)
elif (line.startswith(" NULL")):
parsing_controllers = False
write_controllers()
output.write(line)
elif (line.startswith("#if")):
print(f"Parsing {line.strip()}")
output.write(line)
elif ("SDL_PRIVATE_GAMEPAD_DEFINITIONS" in line):
write_controllers()
output.write(line)
elif (line.startswith("#endif")):
write_controllers()
output.write(line)
else:
save_controller(line)
else:
if (line.startswith("static const char *")):
parsing_controllers = True
output.write(line)
output.close()
print(f"Finished writing {filename}.new")
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