"""distutils.command.check
Implements the Distutils 'check' command.
"""
__revision__ = "$Id$"
from distutils.core import Command
from distutils.dist import PKG_INFO_ENCODING
from distutils.errors import DistutilsSetupError
try:
# docutils is installed
from docutils.utils import Reporter
from docutils.parsers.rst import Parser
from docutils import frontend
from docutils import nodes
from StringIO import StringIO
class SilentReporter(Reporter):
def __init__(self, source, report_level, halt_level, stream=None,
debug=0, encoding='ascii', error_handler='replace'):
self.messages = []
Reporter.__init__(self, source, report_level, halt_level, stream,
debug, encoding, error_handler)
def system_message(self, level, message, *children, **kwargs):
self.messages.append((level, message, children, kwargs))
return nodes.system_message(message, level=level,
type=self.levels[level],
*children, **kwargs)
HAS_DOCUTILS = True
except ImportError:
# docutils is not installed
HAS_DOCUTILS = False
class check(Command):
"""This command checks the meta-data of the package.
"""
description = ("perform some checks on the package")
user_options = [('metadata', 'm', 'Verify meta-data'),
('restructuredtext', 'r',
('Checks if long string meta-data syntax '
'are reStructuredText-compliant')),
('strict', 's',
'Will exit with an error if a check fails')]
boolean_options = ['metadata', 'restructuredtext', 'strict']
def initialize_options(self):
"""Sets default values for options."""
self.restructuredtext = 0
self.metadata = 1
self.strict = 0
self._warnings = 0
def finalize_options(self):
pass
def warn(self, msg):
"""Counts the number of warnings that occurs."""
self._warnings += 1
return Command.warn(self, msg)
def run(self):
"""Runs the command."""
# perform the various tests
if self.metadata:
self.check_metadata()
if self.restructuredtext:
if HAS_DOCUTILS:
self.check_restructuredtext()
elif self.strict:
raise DistutilsSetupError('The docutils package is needed.')
# let's raise an error in strict mode, if we have at least
# one warning
if self.strict and self._warnings > 0:
raise DistutilsSetupError('Please correct your package.')
def check_metadata(self):
"""Ensures that all required elements of meta-data are supplied.
name, version, URL, (author and author_email) or
(maintainer and maintainer_email)).
Warns if any are missing.
"""
metadata = self.distribution.metadata
missing = []
for attr in ('name', 'version', 'url'):
if not (hasattr(metadata, attr) and getattr(metadata, attr)):
missing.append(attr)
if missing:
self.warn("missing required meta-data: %s" % ', '.join(missing))
if metadata.author:
if not metadata.author_email:
self.warn("missing meta-data: if 'author' supplied, " +
"'author_email' must be supplied too")
elif metadata.maintainer:
if not metadata.maintainer_email:
self.warn("missing meta-data: if 'maintainer' supplied, " +
"'maintainer_email' must be supplied too")
else:
self.warn("missing meta-data: either (author and author_email) " +
"or (maintainer and maintainer_email) " +
"must be supplied")
def check_restructuredtext(self):
"""Checks if the long string fields are reST-compliant."""
data = self.distribution.get_long_description()
if not isinstance(data, unicode):
data = data.decode(PKG_INFO_ENCODING)
for warning in self._check_rst_data(data):
line = warning[-1].get('line')
if line is None:
warning = warning[1]
else:
warning = '%s (line %s)' % (warning[1], line)
self.warn(warning)
def _check_rst_data(self, data):
"""Returns warnings when the provided data doesn't compile."""
source_path = StringIO()
parser = Parser()
settings = frontend.OptionParser().get_default_values()
settings.tab_width = 4
settings.pep_references = None
settings.rfc_references = None
reporter = SilentReporter(source_path,
settings.report_level,
settings.halt_level,
stream=settings.warning_stream,
debug=settings.debug,
encoding=settings.error_encoding,
error_handler=settings.error_encoding_error_handler)
document = nodes.document(settings, reporter, source=source_path)
document.note_source(source_path, -1)
try:
parser.parse(data, document)
except AttributeError:
reporter.messages.append((-1, 'Could not finish the parsing.',
'', {}))
return reporter.messages