buildutils/pyuic4.py

   1 #!/usr/bin/env python
   2 # Author: David Aguilar
   3
   4 '''
   5 pyuic4: support for generating .py Python scripts from Qt Designer4 .ui files.
   6
   7 NOTES:
   8
   9 - If PYQT4_ROOT is given(absolute path), the configuration will look
  10   in PYQT4_ROOT/bin first.
  11
  12 - This module hooks adds a python hook that runs
  13   a pyuic4 action when '.ui' files are encoutnered.
  14
  15
  16 '''
  17 import os
  18
  19 import Action
  20 import Object
  21 import Params
  22
  23 import python
  24 python.pyobj.s_default_ext.append('.ui')
  25
  26 def set_options(opt):
  27         '''Adds the --pyuic4 build option.'''
  28         opt.add_option( '--pyuic4', type='string', dest='pyuic4',
  29                         default='', help='path to pyuic4')
  30
  31 def create_pyuic4_tasks(self, node):
  32         '''Creates the tasks to generate python files.
  33         The 'pyuic4' action is called for this.'''
  34
  35         # Create a pyuic4 task to generate the python .py file
  36         pyuic4task = self.create_task('pyuic4')
  37         pyuic4task.set_inputs(node)
  38         pyuic4task.set_outputs(node.change_ext('.py'))
  39
  40         # Add the python compilation tasks
  41         if self.pyc:
  42                 task = self.create_task('pyc', self.env, 50)
  43                 task.set_inputs(node.change_ext('.py'))
  44                 task.set_outputs(node.change_ext('.pyc'))
  45
  46         if self.pyo:
  47                 task = self.create_task('pyo', self.env, 50)
  48                 task.set_inputs(node.change_ext('.py'))
  49                 task.set_outputs(node.change_ext('.pyo'))
  50
  51 def setup(env):
  52         '''Creates a python hook and registers it with the environment.'''
  53         # create the hook action
  54         cmd_template = '${PYUIC4} ${PYUIC4_FLAGS} ${SRC} -o ${TGT}'
  55         Action.simple_action('pyuic4', cmd_template, 'GREEN')
  56
  57         # register .ui for use with python
  58         Object.hook('py', 'PYUIC4_EXT', create_pyuic4_tasks)
  59
  60 def detect(conf):
  61         env = conf.env
  62         opt = Params.g_options
  63
  64         pyuic4 = None
  65         try:
  66                 pyuic4 = opt.pyuic4
  67         except:
  68                 pass
  69
  70         if not pyuic4:
  71                 qtdir = os.environ.get('PYQT4_ROOT', '')
  72                 if qtdir:
  73                         binpath = [qtdir] + os.environ['PATH'].split(':')
  74                 else:
  75                         binpath = os.environ['PATH'].split(':')
  76
  77                 for f in ['pyuic4', 'pyuic-qt4', 'pyuic']:
  78                         pyuic4 = conf.find_program(f, path_list=binpath)
  79                         if pyuic4:
  80                                 break
  81
  82         if not pyuic4:
  83                 conf.check_message('pyuic4 binary', '(not found)', 0)
  84                 Params.fatal('Error: missing PyQt4 development tools.')
  85                 return False
  86
  87         # Set the path to pyuic4
  88         env['PYUIC4'] = pyuic4
  89         env['PYUIC4_EXT'] = ['.ui']
  90         env['PYUIC4_FLAGS'] = '-x'
  91
  92         vercmd = env['PYUIC4'] + ' --version 2>&1'
  93         version = os.popen(vercmd).read().strip().split(' ')[-1]
  94         version = version.split('.')[0]
  95         if not version.isdigit() or int(version) < 4:
  96                 conf.check_message('pyuic4 version', '(not found or too old)', 0,
  97                                 option= '(%s)' % version)
  98                 return False
  99
 100         conf.check_message('pyuic4 version', '', 1, option='(%s)' % version)
 101
 102         # all tests passed
 103         return True