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88 lines
3.2 KiB
Python
88 lines
3.2 KiB
Python
"""Check PEP compliance of metadata."""
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from packaging import logger
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from packaging.command.cmd import Command
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from packaging.errors import PackagingSetupError
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from packaging.util import resolve_name
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class check(Command):
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description = "check PEP compliance of metadata"
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user_options = [('metadata', 'm', 'Verify metadata'),
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('all', 'a',
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('runs extended set of checks')),
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('strict', 's',
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'Will exit with an error if a check fails')]
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boolean_options = ['metadata', 'all', 'strict']
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def initialize_options(self):
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"""Sets default values for options."""
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self.all = False
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self.metadata = True
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self.strict = False
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self._warnings = []
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def finalize_options(self):
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pass
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def warn(self, msg, *args):
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"""Wrapper around logging that also remembers messages."""
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# XXX we could use a special handler for this, but would need to test
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# if it works even if the logger has a too high level
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self._warnings.append((msg, args))
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return logger.warning('%s: %s' % (self.get_command_name(), msg), *args)
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def run(self):
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"""Runs the command."""
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# perform the various tests
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if self.metadata:
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self.check_metadata()
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if self.all:
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self.check_restructuredtext()
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self.check_hooks_resolvable()
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# let's raise an error in strict mode, if we have at least
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# one warning
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if self.strict and len(self._warnings) > 0:
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msg = '\n'.join(msg % args for msg, args in self._warnings)
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raise PackagingSetupError(msg)
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def check_metadata(self):
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"""Ensures that all required elements of metadata are supplied.
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name, version, URL, author
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Warns if any are missing.
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"""
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missing, warnings = self.distribution.metadata.check(strict=True)
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if missing != []:
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self.warn('missing required metadata: %s', ', '.join(missing))
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for warning in warnings:
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self.warn(warning)
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def check_restructuredtext(self):
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"""Checks if the long string fields are reST-compliant."""
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missing, warnings = self.distribution.metadata.check(restructuredtext=True)
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if self.distribution.metadata.docutils_support:
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for warning in warnings:
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line = warning[-1].get('line')
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if line is None:
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warning = warning[1]
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else:
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warning = '%s (line %s)' % (warning[1], line)
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self.warn(warning)
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elif self.strict:
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raise PackagingSetupError('The docutils package is needed.')
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def check_hooks_resolvable(self):
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for options in self.distribution.command_options.values():
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for hook_kind in ("pre_hook", "post_hook"):
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if hook_kind not in options:
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break
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for hook_name in options[hook_kind][1].values():
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try:
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resolve_name(hook_name)
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except ImportError:
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self.warn('name %r cannot be resolved', hook_name)
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