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# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
#  more details.
# You should have received a copy of the GNU General Public License along
# with this program in the file licence.txt; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-
# 1307 USA
# You can find the licence also on the web at:
# http://www.opensource.org/licenses/gpl-license.php

import sys, os, time, traceback

baseScript = '''
import os, ctypes
from ctypes import c_bool, c_char, c_char_p, c_int, c_uint, c_float, Structure, create_string_buffer, cast, pointer

class StartPos(Structure):
      _fields_ = [('x', c_int), ('y', c_int)]
      def __str__(self):
            return '(%i, %i)' % (self.x, self.y)

class MapInfo(Structure):
      def __init__(self):
            self.author = cast(create_string_buffer(200), c_char_p) # BUG: author field shows up as empty, probably something to do with the fact it's after the startpos structs
            self.description = cast(create_string_buffer(255), c_char_p)

      _fields_ = [('description', c_char_p),
                  ('tidalStrength', c_int),
                  ('gravity', c_int),
                  ('maxMetal', c_float),
                  ('extractorRadius', c_int),
                  ('minWind', c_int),
                  ('maxWind', c_int),
                  ('width', c_int),
                  ('height', c_int),
                  ('posCount', c_int),
                  ('StartPos', StartPos * 16),
                  ('author', c_char_p)]
'''.lstrip() # takes off the leading \n which is just for aesthetics here :)
classBase = '''
class Unitsync:
      def has(self, name):
            """Query whether the loaded unitsync exports a particular procedure."""
            return hasattr(self.unitsync, name)

      def _init(self, name, restype):
            """Load a procedure from unitsync and assign its return type."""
            if self.has(name):
                  getattr(self.unitsync, name).restype = restype

      def __init__(self, location):
            """Load unitsync from location and attempt to load all known procedures.
            Location must end with .so (Linux) or .dll (Windows)"""
            if location.endswith('.so'):
                  self.unitsync = ctypes.cdll.LoadLibrary(location)
            elif location.endswith('.dll'):
                  locationdir = os.path.dirname(location)
                  # load devil first, to avoid dll conflicts
                  ctypes.windll.LoadLibrary(locationdir + "/devil.dll" )
                  # load other dependencies, in case the spring dir is not in PATH
                  ctypes.windll.LoadLibrary(locationdir + "/ILU.dll" )
                  ctypes.windll.LoadLibrary(locationdir + "/SDL.dll" )
                  self.unitsync = ctypes.windll.LoadLibrary(location)

argv = sys.argv
if len(argv) < 2:
      if os.path.isfile('./unitsync_api.h'):
            print 'must be passed unitsync_api.h to generate bindings'
            print 'if on windows, you can simply drag the file onto this one'

name = argv[1]
if not os.path.isfile(name):
      print '%s is not a valid file' % name

f = open(name, 'r')
data = f.read()

typeMap = {
      'char*':          'c_char_p',
      'char':                 'c_char',
      'int':                  'c_int',
      'int*':                 'c_int', # pointer to an int, not sure if ctypes can just use this as a normal int
      'unsigned int': 'c_uint',
      'float':          'c_float',
      'bool':                 'c_bool',
      'void*':          'c_char_p', # not sure how to handle the void pointer to minimap
      'void':                 '', # makes the generated code return (self.unitsync.etc), which doesn't cast it as anything :)

def quickParse(data):
      return data.replace('const', '').strip()

def getType(data):
      if data in typeMap:
            return typeMap[data]
      else: # pass it as a pointer
            return 'pointer'

functions = []

for line in data.split('\n'):
      line = line.strip('\r')
      if line.startswith('EXPORT'):
            returnType, line = line.split('(',1)[1].split(')',1)
            function, args = line.split('(',1)

            args = args.split(')',1)[0]
            if args: args = [quickParse(arg) for arg in args.split(',')]
            else: args = []
            returnType = quickParse(returnType)
            function = quickParse(function)

            returnType = getType(returnType)
            newArgs = []
            for arg in args:
                  argType, argName = arg.rsplit(' ',1)
                  argType = getType(argType)
                  newArgs.append((argType, argName))

            functions.append((function, returnType, newArgs))

            #print 'EXPORT(%s) %s(%s);' % (returnType, function, ', '.join(newArgs))

f = open('unitsync.py', 'w')

for (name, returnType, args) in functions:
      if returnType:
            text = 'self._init("%s", %s)' % (name, returnType)


for (name, returnType, args) in functions:
      defTemp = []
      callTemp = []
      for argType, argName in args:
            if argType == 'pointer':

      callArgs = ', '.join(callTemp)
      defArgs = ('self, '+', '.join(defTemp)) if defTemp else 'self'
      text = 'def %s(%s): return self.unitsync.%s(%s)' % (name, defArgs, name, callArgs)
      #text = 'def %s(%s): return %s(self.unitsync.%s(%s)).value' % (name, defArgs, returnType, name, callArgs)

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