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 Params
  21
  22 import python
  23 python.pyobj.s_default_ext.append('.ui')
  24
  25 def set_options (opt):
  26         '''Adds the --pyuic4 build option.'''
  27         opt.add_option ( '--pyuic4', type='string', dest='pyuic4',
  28                         default='', help='path to the pyuic4 binary')
  29
  30 def create_pyuic4_tasks (self, node):
  31         '''Creates the tasks to generate python files.
  32         The 'pyuic4' action is called for this.'''
  33
  34         # Create a pyuic4 task to generate the python .py file
  35         pyuic4task = self.create_task ('pyuic4')
  36         pyuic4task.set_inputs (node)
  37         pyuic4task.set_outputs (node.change_ext ('.py'))
  38
  39         # Add the python compilation tasks
  40         if self.pyc:
  41                 task = self.create_task ('pyc', self.env, 50)
  42                 task.set_inputs (node.change_ext ('.py'))
  43                 task.set_outputs (node.change_ext ('.pyc'))
  44
  45         if self.pyo:
  46                 task = self.create_task ('pyo', self.env, 50)
  47                 task.set_inputs (node.change_ext ('.py'))
  48                 task.set_outputs (node.change_ext ('.pyo'))
  49
  50 def setup (env):
  51         '''Creates a python hook and registers it with the environment.'''
  52         # create the hook action
  53         cmd_template = '${PYUIC4} ${PYUIC4_FLAGS} ${SRC} -o ${TGT}'
  54         cmd_color = 'BLUE'
  55         Action.simple_action ('pyuic4', cmd_template, cmd_color)
  56
  57         # register .ui for use with python
  58         env.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                 return False
  85
  86         # Set the path to pyuic4
  87         env['PYUIC4'] = pyuic4
  88         env['PYUIC4_EXT'] = ['.ui']
  89         env['PYUIC4_FLAGS'] = '-x'
  90
  91         vercmd = env['PYUIC4'] + ' --version 2>&1'
  92         version = os.popen (vercmd).read().strip().split (' ')[-1]
  93         version = version.split('.')[0]
  94         if int(version) < 4:
  95                 conf.check_message ('pyuic version', '(too old)', 0,
  96                                 option= '(%s)' % version)
  97                 return False
  98
  99         conf.check_message ('pyuic4 version', '', 1, option='(%s)' % version)
 100
 101         # all tests passed
 102         return True