#!/usr/bin/env python

#

# Script to sort the game controller database entries in SDL_gamecontroller.c

import re

filename = "SDL_gamecontrollerdb.h"

input = open(filename)

output = open(filename + ".new", "w")

parsing_controllers = False

controllers = []

controller_guids = {}

split_pattern = re.compile(r'([^"]*")([^,]*,)([^,]*,)([^"]*)(".*)')

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)

    entry.extend(",".join(bindings) + ",")

    entry.append(match.group(5))

    controllers.append(entry)

def write_controllers():

    global controllers

    global controller_guids

    for entry in sorted(controllers, key=lambda entry: entry[2]):

        line = "".join(entry) + "\n"

        if not line.endswith(",\n") and not line.endswith("*/\n"):

            print("Warning: '%s' is missing a comma at the end of the line" % (line))

        if (entry[1] in controller_guids):

            print("Warning: entry '%s' is duplicate of entry '%s'" % (entry[2], controller_guids[entry[1]][2]))

        controller_guids[entry[1]] = entry

        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("Parsing " + line.strip())

            output.write(line)

        elif (line.startswith("#endif")):

            write_controllers()

            output.write(line)

        else:

            save_controller(line)

    else:

        if (line.startswith("static const char *s_ControllerMappings")):

            parsing_controllers = True

        output.write(line)

output.close()

print("Finished writing %s.new" % filename)