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#!/usr/bin/env python3
import os
import datetime
from urllib.request import urlopen
# This script parses the SDL game controller db header file from the
# SDL mercurial repository, and generates a list of mappings to be used
# internally by pyglet. This script may need to be updated if the
# format or url changes.
# Get the raw database header file:
DB_URL = "https://hg.libsdl.org/SDL/raw-file/default/src/joystick/SDL_gamepad_db.h"
raw = urlopen(DB_URL).read().decode('ascii')
# Format the output directory for the pyglet module:
script_dir = os.path.abspath(os.path.dirname(__file__))
output_dir = os.path.join(script_dir, os.path.pardir, 'pyglet', 'input')
output_file = os.path.join(output_dir, 'controller_db.py')
# Parse the Windows section:
win_string = '#ifdef SDL_JOYSTICK_DINPUT'
win_start = raw.find(win_string) + len(win_string)
win_end = raw.find('#endif', win_start)
win_raw = raw[win_start:win_end]
# Parse the Mac OSX section:
mac_string = '#ifdef SDL_PLATFORM_MACOS'
mac_start = raw.find(mac_string) + len(mac_string)
mac_end = raw.find('#endif', mac_start)
mac_raw = raw[mac_start:mac_end]
# Parse the Linux section:
lin_string = '#if defined(SDL_JOYSTICK_LINUX) || defined(SDL_PLATFORM_OPENBSD)'
lin_start = raw.find(lin_string) + len(lin_string)
lin_end = raw.find('#endif', lin_start)
lin_raw = raw[lin_start:lin_end]
def strip_lines(raw_lines):
"""Strip invalid lines and C comments"""
lines = []
for line in raw_lines.splitlines():
line = line.strip()
if '"' in line:
line = line.split('"')[1]
lines.append(line)
return lines
# Create lists of formatted lines:
win_lines = strip_lines(win_raw)
mac_lines = strip_lines(mac_raw)
lin_lines = strip_lines(lin_raw)
# Write out a valid Python module in the pyglet/input directory:
with open(output_file, 'w+') as f:
f.write("from pyglet import compat_platform\n\n\n")
f.write("# This file is automatically generated by 'pyglet/tools/gen_controller_db.py'\n")
f.write("# Generated on: {0}\n\n".format(datetime.datetime.now().strftime('%c')))
f.write("""if compat_platform.startswith("linux"):\n mapping_list = [\n""")
for lin_line in lin_lines:
f.write(f'"{lin_line}",\n')
f.write("]\n")
f.write("""elif compat_platform.startswith("darwin"):\n mapping_list = [\n""")
for mac_line in mac_lines:
f.write(f'"{mac_line}",\n')
f.write("]\n")
f.write("""elif compat_platform.startswith("win"):\n mapping_list = [\n""")
for win_line in win_lines:
f.write(f'"{win_line}",\n')
f.write("]\n")
f.write("else:\n mapping_list = []\n")
print("Saved 'pyglet/input/controller_db.py'")
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