103 lines
3 KiB
Python
103 lines
3 KiB
Python
# Adapted from http://djangosnippets.org/snippets/1762/
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import ast
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import os
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import sys
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from django.core.management.base import BaseCommand
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from pyflakes import checker, messages
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from orchestra.utils.paths import get_orchestra_root
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# BlackHole, PySyntaxError and checking based on
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# https://github.com/patrys/gedit-pyflakes-plugin.git
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class BlackHole(object):
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write = flush = lambda *args, **kwargs: None
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def __enter__(self):
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self.stderr, sys.stderr = sys.stderr, self
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def __exit__(self, *args, **kwargs):
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sys.stderr = self.stderr
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class PySyntaxError(messages.Message):
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message = 'syntax error in line %d: %s'
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def __init__(self, filename, e):
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super(PySyntaxError, self).__init__(filename, e)
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self.message_args = (e.offset, e.text)
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def check(codeString, filename):
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"""
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Check the Python source given by C{codeString} for flakes.
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@param codeString: The Python source to check.
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@type codeString: C{str}
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@param filename: The name of the file the source came from, used to report errors.
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@type filename: C{str}
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@return: The number of warnings emitted.
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@rtype: C{int}
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"""
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try:
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with BlackHole():
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tree = ast.parse(codeString, filename)
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except SyntaxError, e:
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return [PySyntaxError(filename, e)]
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else:
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# Okay, it's syntactically valid. Now parse it into an ast and check it
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w = checker.Checker(tree, filename)
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lines = codeString.split('\n')
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# honour pyflakes: ignore comments
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messages = [message for message in w.messages
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if lines[message.lineno-1].find('pyflakes:ignore') < 0]
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messages.sort(lambda a, b: cmp(a.lineno, b.lineno))
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return messages
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def checkPath(filename):
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"""
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Check the given path, printing out any warnings detected.
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@return: the number of warnings printed
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"""
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try:
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return check(file(filename, 'U').read() + '\n', filename)
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except IOError, msg:
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return ["%s: %s" % (filename, msg.args[1])]
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except TypeError:
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pass
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def checkPaths(filenames):
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warnings = []
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for arg in filenames:
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if os.path.isdir(arg):
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for dirpath, dirnames, filenames in os.walk(arg):
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for filename in filenames:
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if filename.endswith('.py'):
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warnings.extend(checkPath(os.path.join(dirpath, filename)))
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else:
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warnings.extend(checkPath(arg))
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return warnings
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#### pyflakes.scripts.pyflakes ends.
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class Command(BaseCommand):
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help = "Run pyflakes syntax checks."
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args = '[filename [filename [...]]]'
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def handle(self, *filenames, **options):
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if not filenames:
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filenames = [get_orchestra_root(), '.']
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warnings = checkPaths(filenames)
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for warning in warnings:
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print warning
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if warnings:
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print 'Total warnings: %d' % len(warnings)
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raise SystemExit(1)
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