zeroinstall/0launch-gui/compile.py

   1 # Copyright (C) 2009, Thomas Leonard
   2 # See the README file for details, or visit http://0install.net.
   3
   4 import os, subprocess
   5 import gobject
   6 import dialog
   7 from logging import info
   8
   9 from zeroinstall.injector import reader, iface_cache, model
  10 from zeroinstall.injector.policy import Policy
  11
  12 XMLNS_0COMPILE = 'http://zero-install.sourceforge.net/2006/namespaces/0compile'
  13
  14 class Command:
  15         def __init__(self):
  16                 self.child = None
  17                 self.error = ""
  18
  19         def run(self, command, success):
  20                 assert self.child is None
  21                 self.success = success
  22                 self.child = subprocess.Popen(command,
  23                                                 stdout = subprocess.PIPE,
  24                                                 stderr = subprocess.STDOUT)
  25                 gobject.io_add_watch(self.child.stdout, gobject.IO_IN | gobject.IO_HUP, self.got_data)
  26
  27         def got_data(self, src, cond):
  28                 data = os.read(src.fileno(), 100)
  29                 if data:
  30                         self.error += data
  31                         return True
  32                 else:
  33                         status = self.child.wait()
  34                         self.child = None
  35
  36                         if os.WIFEXITED(status) and os.WEXITSTATUS(status) == 0:
  37                                 self.success()
  38                         else:
  39                                 if os.WIFEXITED(status):
  40                                         status = os.WEXITSTATUS(status)
  41                                         if status == 1 and not self.error:
  42                                                 return False # Cancelled
  43                                         dialog.alert(None, "Command failed with exit code %d:\n%s\n" %
  44                                                 (status, self.error))
  45                                 else:
  46                                         dialog.alert(None, "Command failed:\n%s\n" % self.error)
  47                         return False
  48
  49 def compile(policy, interface):
  50         def add_feed():
  51                 # A new local feed may have been registered, so update the interface from the cache
  52                 info("0compile command completed successfully. Reloading interface details.")
  53                 reader.update_from_cache(interface)
  54                 policy.recalculate()
  55
  56         def build():
  57                 # Get the chosen versions
  58                 src_policy = Policy(interface.uri, src = True)
  59                 src_policy.freshness = 0
  60
  61                 src_policy.recalculate()
  62                 if not src_policy.ready:
  63                         raise Exception('Internal error: required source components not found!')
  64
  65                 root_iface = iface_cache.iface_cache.get_interface(src_policy.root)
  66                 impl = src_policy.implementation[root_iface]
  67                 min_version = impl.metadata.get(XMLNS_0COMPILE + ' min-version', None)
  68                 if not min_version: min_version = '0.4'
  69                 # Check the syntax is valid and the version is high enough
  70                 if model.parse_version(min_version) < model.parse_version('0.4'):
  71                         min_version = '0.4'
  72
  73                 # Do the whole build-and-register-feed
  74                 c = Command()
  75                 c.run(("0launch",
  76                         '--message', 'Download the 0compile tool, to compile the source code',
  77                         '--not-before=' + min_version,
  78                         "http://0install.net/2006/interfaces/0compile.xml",
  79                         'gui',
  80                         '--no-prompt',
  81                         interface.uri), add_feed)
  82
  83         # Prompt user to choose source version
  84         c = Command()
  85         c.run(['0launch',
  86                 '--message', 'Download the source code to be compiled',
  87                 '--gui', '--source', '--download-only', interface.uri], build)