def supports_prelaunch():
# This function is called on the prelaunch hotpath. Thus, it needs to avoid importing things like gtk or wx,
# which are what necessitate prelaunching in the first place.
if '--curses' in sys.argv:
return False
# use chrome if specified
if '--chrome' in sys.argv:
return False
# check whether we even have X
if os.getenv('DISPLAY'):
pass
elif sys.platform == 'darwin':
pass
else:
return False
# Try using chrome.
import message_loop_chrome
if message_loop_chrome.supported():
return False
return True
def main(main_name):
"""The main entry point to the bootstrapper. Call this with the module name to
use as your main app."""
# prelaunch should bypass full bootstrap
if prelaunch_client.is_prelaunch_client(sys.argv):
# This is a lightweight import due to lazy initialization of the message loop.
import message_loop
if message_loop.supports_prelaunch():
return sys.exit(prelaunch_client.main(sys.argv))
# Remove the prelaunch command from the argv and proceed as normal.
prelaunch_client.remove_prelaunch_from_sys_argv()
if sys.platform == 'darwin':
if ('--chrome' in sys.argv):
sys.argv.insert(1, '--main-name')
sys.argv.insert(2, main_name)
sys.exit(run())
if ('--curses' in sys.argv):
sys.argv.insert(1, '--main-name')
sys.argv.insert(2, main_name)
sys.exit(run())
# Try using chrome.
import message_loop_chrome
if message_loop_chrome.supported():
sys.argv.insert(1, '--main-name')
sys.argv.insert(2, main_name)
sys.exit(run())
# To use wx-widgets on darwin, we need to be in 32 bit mode. Import of wx
# will fail if you run python in 64 bit mode, which is default in 10.6+. :'(
# It is depressingly hard to force python into 32 bit mode reliably across
# computers, for some reason. So, we try two approaches known to work... one
# after the other.
wx_found_but_failed = False
try:
import wx
except ImportError:
if str(sys.exc_value).find("no appropriate 64-bit") != -1:
wx_found_but_failed = True
if wx_found_but_failed:
# Switch the executable to /usr/bin/python2.6 if we are implicitly running
# 2.6 via /usr/bin/python. For some reason, neither the arch trick nor the
# env trick work if you use /usr/bin/python
if sys.version.startswith(
"2.6") and sys.executable == '/usr/bin/python':
if os.path.exists('/usr/bin/python2.6'):
executable = '/usr/bin/python2.6'
else:
executable = sys.executable
else:
executable = sys.executable
# try using the versioner trick
if '--triedenv' not in sys.argv:
os.putenv('VERSIONER_PYTHON_PREFER_32_BIT', 'yes')
args = [executable, sys.argv[0], '--triedenv']
args.extend(sys.argv[1:])
os.execve(args[0], args, os.environ)
# last chance...
if '--triedarch' not in sys.argv:
args = [
"/usr/bin/arch", "-i386", executable, sys.argv[0],
'--triedarch'
]
args.extend(sys.argv[1:])
os.execv(args[0], args)
# did we already try one of the tricks below? Bail out to prevent recursion...
print "Your system's python is 64 bit, and all the tricks we know to get it into 32b mode failed."
sys.exit(255)
else:
try:
sys.argv.remove('--triedenv')
except:
pass
try:
sys.argv.remove('--triedarch')
except:
pass
sys.argv.insert(1, '--main-name')
sys.argv.insert(2, main_name)
sys.exit(run())
else:
sys.argv.insert(1, '--main-name')
sys.argv.insert(2, main_name)
sys.exit(run())
def main(main_name):
"""The main entry point to the bootstrapper. Call this with the module name to
use as your main app."""
# prelaunch should bypass full bootstrap
if prelaunch_client.is_prelaunch_client(sys.argv):
# This is a lightweight import due to lazy initialization of the message loop.
import message_loop
if message_loop.supports_prelaunch():
return sys.exit(prelaunch_client.main(sys.argv))
# Remove the prelaunch command from the argv and proceed as normal.
prelaunch_client.remove_prelaunch_from_sys_argv()
if sys.platform == 'darwin':
if ('--chrome' in sys.argv):
sys.argv.insert(1, '--main-name')
sys.argv.insert(2, main_name)
sys.exit(run())
if ('--curses' in sys.argv):
sys.argv.insert(1, '--main-name')
sys.argv.insert(2, main_name)
sys.exit(run())
# Try using chrome.
import message_loop_chrome
if message_loop_chrome.supported():
sys.argv.insert(1, '--main-name')
sys.argv.insert(2, main_name)
sys.exit(run())
# To use wx-widgets on darwin, we need to be in 32 bit mode. Import of wx
# will fail if you run python in 64 bit mode, which is default in 10.6+. :'(
# It is depressingly hard to force python into 32 bit mode reliably across
# computers, for some reason. So, we try two approaches known to work... one
# after the other.
wx_found_but_failed = False
try:
import wx
except ImportError:
if str(sys.exc_value).find("no appropriate 64-bit") != -1:
wx_found_but_failed = True
if wx_found_but_failed:
# Switch the executable to /usr/bin/python2.6 if we are implicitly running
# 2.6 via /usr/bin/python. For some reason, neither the arch trick nor the
# env trick work if you use /usr/bin/python
if sys.version.startswith("2.6") and sys.executable == '/usr/bin/python':
if os.path.exists('/usr/bin/python2.6'):
executable = '/usr/bin/python2.6'
else:
executable = sys.executable
else:
executable = sys.executable
# try using the versioner trick
if '--triedenv' not in sys.argv:
os.putenv('VERSIONER_PYTHON_PREFER_32_BIT', 'yes')
args = [executable, sys.argv[0], '--triedenv']
args.extend(sys.argv[1:])
os.execve(args[0], args, os.environ)
# last chance...
if '--triedarch' not in sys.argv:
args = ["/usr/bin/arch", "-i386", executable, sys.argv[0], '--triedarch']
args.extend(sys.argv[1:])
os.execv(args[0], args)
# did we already try one of the tricks below? Bail out to prevent recursion...
print "Your system's python is 64 bit, and all the tricks we know to get it into 32b mode failed."
sys.exit(255)
else:
try:
sys.argv.remove('--triedenv')
except:
pass
try:
sys.argv.remove('--triedarch')
except:
pass
sys.argv.insert(1, '--main-name')
sys.argv.insert(2, main_name)
sys.exit(run())
else:
sys.argv.insert(1, '--main-name')
sys.argv.insert(2, main_name)
sys.exit(run())