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"""distutils.command.x
Implements the Distutils 'x' command.
"""
# created 2000/mm/dd, John Doe
__revision__ = "$Id$"
from distutils.core import Command
class DependencyFailure(Exception): pass
class VersionTooOld(DependencyFailure): pass
class VersionNotKnown(DependencyFailure): pass
class checkdep (Command):
# Brief (40-50 characters) description of the command
description = "check package dependencies"
# List of option tuples: long name, short name (None if no short
# name), and help string.
# Later on, we might have auto-fetch and the like here. Feel free.
user_options = []
def initialize_options (self):
self.debug = None
# initialize_options()
def finalize_options (self):
pass
# finalize_options()
def run (self):
from distutils.version import LooseVersion
failed = []
for pkg, ver in self.distribution.metadata.requires:
if pkg == 'python':
if ver is not None:
# Special case the 'python' package
import sys
thisver = LooseVersion('%d.%d.%d'%sys.version_info[:3])
if thisver < ver:
failed.append(((pkg,ver), VersionTooOld(thisver)))
continue
# Kinda hacky - we should do more here
try:
mod = __import__(pkg)
except Exception, e:
failed.append(((pkg,ver), e))
continue
if ver is not None:
if hasattr(mod, '__version__'):
thisver = LooseVersion(mod.__version__)
if thisver < ver:
failed.append(((pkg,ver), VersionTooOld(thisver)))
else:
failed.append(((pkg,ver), VersionNotKnown()))
if failed:
raise DependencyFailure, failed
# run()
# class x
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