394 lines
14 KiB
Python
394 lines
14 KiB
Python
# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2012-2013 Python Software Foundation.
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# See LICENSE.txt and CONTRIBUTORS.txt.
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#
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"""
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Class representing the list of files in a distribution.
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Equivalent to distutils.filelist, but fixes some problems.
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"""
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import fnmatch
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import logging
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import os
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import re
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import sys
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from . import DistlibException
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from .compat import fsdecode
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from .util import convert_path
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__all__ = ['Manifest']
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logger = logging.getLogger(__name__)
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# a \ followed by some spaces + EOL
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_COLLAPSE_PATTERN = re.compile('\\\\w*\n', re.M)
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_COMMENTED_LINE = re.compile('#.*?(?=\n)|\n(?=$)', re.M | re.S)
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#
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# Due to the different results returned by fnmatch.translate, we need
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# to do slightly different processing for Python 2.7 and 3.2 ... this needed
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# to be brought in for Python 3.6 onwards.
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#
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_PYTHON_VERSION = sys.version_info[:2]
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class Manifest(object):
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"""A list of files built by on exploring the filesystem and filtered by
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applying various patterns to what we find there.
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"""
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def __init__(self, base=None):
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"""
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Initialise an instance.
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:param base: The base directory to explore under.
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"""
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self.base = os.path.abspath(os.path.normpath(base or os.getcwd()))
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self.prefix = self.base + os.sep
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self.allfiles = None
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self.files = set()
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#
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# Public API
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#
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def findall(self):
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"""Find all files under the base and set ``allfiles`` to the absolute
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pathnames of files found.
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"""
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from stat import S_ISREG, S_ISDIR, S_ISLNK
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self.allfiles = allfiles = []
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root = self.base
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stack = [root]
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pop = stack.pop
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push = stack.append
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while stack:
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root = pop()
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names = os.listdir(root)
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for name in names:
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fullname = os.path.join(root, name)
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# Avoid excess stat calls -- just one will do, thank you!
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stat = os.stat(fullname)
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mode = stat.st_mode
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if S_ISREG(mode):
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allfiles.append(fsdecode(fullname))
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elif S_ISDIR(mode) and not S_ISLNK(mode):
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push(fullname)
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def add(self, item):
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"""
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Add a file to the manifest.
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:param item: The pathname to add. This can be relative to the base.
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"""
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if not item.startswith(self.prefix):
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item = os.path.join(self.base, item)
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self.files.add(os.path.normpath(item))
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def add_many(self, items):
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"""
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Add a list of files to the manifest.
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:param items: The pathnames to add. These can be relative to the base.
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"""
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for item in items:
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self.add(item)
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def sorted(self, wantdirs=False):
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"""
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Return sorted files in directory order
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"""
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def add_dir(dirs, d):
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dirs.add(d)
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logger.debug('add_dir added %s', d)
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if d != self.base:
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parent, _ = os.path.split(d)
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assert parent not in ('', '/')
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add_dir(dirs, parent)
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result = set(self.files) # make a copy!
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if wantdirs:
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dirs = set()
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for f in result:
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add_dir(dirs, os.path.dirname(f))
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result |= dirs
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return [os.path.join(*path_tuple) for path_tuple in
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sorted(os.path.split(path) for path in result)]
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def clear(self):
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"""Clear all collected files."""
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self.files = set()
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self.allfiles = []
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def process_directive(self, directive):
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"""
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Process a directive which either adds some files from ``allfiles`` to
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``files``, or removes some files from ``files``.
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:param directive: The directive to process. This should be in a format
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compatible with distutils ``MANIFEST.in`` files:
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http://docs.python.org/distutils/sourcedist.html#commands
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"""
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# Parse the line: split it up, make sure the right number of words
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# is there, and return the relevant words. 'action' is always
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# defined: it's the first word of the line. Which of the other
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# three are defined depends on the action; it'll be either
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# patterns, (dir and patterns), or (dirpattern).
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action, patterns, thedir, dirpattern = self._parse_directive(directive)
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# OK, now we know that the action is valid and we have the
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# right number of words on the line for that action -- so we
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# can proceed with minimal error-checking.
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if action == 'include':
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for pattern in patterns:
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if not self._include_pattern(pattern, anchor=True):
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logger.warning('no files found matching %r', pattern)
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elif action == 'exclude':
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for pattern in patterns:
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found = self._exclude_pattern(pattern, anchor=True)
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#if not found:
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# logger.warning('no previously-included files '
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# 'found matching %r', pattern)
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elif action == 'global-include':
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for pattern in patterns:
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if not self._include_pattern(pattern, anchor=False):
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logger.warning('no files found matching %r '
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'anywhere in distribution', pattern)
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elif action == 'global-exclude':
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for pattern in patterns:
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found = self._exclude_pattern(pattern, anchor=False)
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#if not found:
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# logger.warning('no previously-included files '
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# 'matching %r found anywhere in '
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# 'distribution', pattern)
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elif action == 'recursive-include':
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for pattern in patterns:
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if not self._include_pattern(pattern, prefix=thedir):
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logger.warning('no files found matching %r '
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'under directory %r', pattern, thedir)
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elif action == 'recursive-exclude':
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for pattern in patterns:
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found = self._exclude_pattern(pattern, prefix=thedir)
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#if not found:
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# logger.warning('no previously-included files '
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# 'matching %r found under directory %r',
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# pattern, thedir)
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elif action == 'graft':
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if not self._include_pattern(None, prefix=dirpattern):
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logger.warning('no directories found matching %r',
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dirpattern)
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elif action == 'prune':
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if not self._exclude_pattern(None, prefix=dirpattern):
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logger.warning('no previously-included directories found '
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'matching %r', dirpattern)
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else: # pragma: no cover
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# This should never happen, as it should be caught in
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# _parse_template_line
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raise DistlibException(
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'invalid action %r' % action)
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#
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# Private API
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#
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def _parse_directive(self, directive):
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"""
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Validate a directive.
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:param directive: The directive to validate.
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:return: A tuple of action, patterns, thedir, dir_patterns
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"""
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words = directive.split()
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if len(words) == 1 and words[0] not in ('include', 'exclude',
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'global-include',
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'global-exclude',
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'recursive-include',
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'recursive-exclude',
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'graft', 'prune'):
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# no action given, let's use the default 'include'
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words.insert(0, 'include')
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action = words[0]
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patterns = thedir = dir_pattern = None
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if action in ('include', 'exclude',
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'global-include', 'global-exclude'):
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if len(words) < 2:
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raise DistlibException(
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'%r expects <pattern1> <pattern2> ...' % action)
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patterns = [convert_path(word) for word in words[1:]]
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elif action in ('recursive-include', 'recursive-exclude'):
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if len(words) < 3:
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raise DistlibException(
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'%r expects <dir> <pattern1> <pattern2> ...' % action)
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thedir = convert_path(words[1])
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patterns = [convert_path(word) for word in words[2:]]
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elif action in ('graft', 'prune'):
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if len(words) != 2:
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raise DistlibException(
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'%r expects a single <dir_pattern>' % action)
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dir_pattern = convert_path(words[1])
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else:
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raise DistlibException('unknown action %r' % action)
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return action, patterns, thedir, dir_pattern
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def _include_pattern(self, pattern, anchor=True, prefix=None,
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is_regex=False):
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"""Select strings (presumably filenames) from 'self.files' that
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match 'pattern', a Unix-style wildcard (glob) pattern.
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Patterns are not quite the same as implemented by the 'fnmatch'
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module: '*' and '?' match non-special characters, where "special"
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is platform-dependent: slash on Unix; colon, slash, and backslash on
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DOS/Windows; and colon on Mac OS.
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If 'anchor' is true (the default), then the pattern match is more
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stringent: "*.py" will match "foo.py" but not "foo/bar.py". If
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'anchor' is false, both of these will match.
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If 'prefix' is supplied, then only filenames starting with 'prefix'
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(itself a pattern) and ending with 'pattern', with anything in between
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them, will match. 'anchor' is ignored in this case.
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If 'is_regex' is true, 'anchor' and 'prefix' are ignored, and
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'pattern' is assumed to be either a string containing a regex or a
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regex object -- no translation is done, the regex is just compiled
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and used as-is.
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Selected strings will be added to self.files.
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Return True if files are found.
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"""
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# XXX docstring lying about what the special chars are?
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found = False
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pattern_re = self._translate_pattern(pattern, anchor, prefix, is_regex)
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# delayed loading of allfiles list
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if self.allfiles is None:
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self.findall()
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for name in self.allfiles:
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if pattern_re.search(name):
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self.files.add(name)
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found = True
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return found
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def _exclude_pattern(self, pattern, anchor=True, prefix=None,
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is_regex=False):
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"""Remove strings (presumably filenames) from 'files' that match
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'pattern'.
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Other parameters are the same as for 'include_pattern()', above.
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The list 'self.files' is modified in place. Return True if files are
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found.
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This API is public to allow e.g. exclusion of SCM subdirs, e.g. when
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packaging source distributions
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"""
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found = False
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pattern_re = self._translate_pattern(pattern, anchor, prefix, is_regex)
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for f in list(self.files):
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if pattern_re.search(f):
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self.files.remove(f)
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found = True
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return found
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def _translate_pattern(self, pattern, anchor=True, prefix=None,
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is_regex=False):
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"""Translate a shell-like wildcard pattern to a compiled regular
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expression.
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Return the compiled regex. If 'is_regex' true,
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then 'pattern' is directly compiled to a regex (if it's a string)
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or just returned as-is (assumes it's a regex object).
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"""
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if is_regex:
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if isinstance(pattern, str):
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return re.compile(pattern)
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else:
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return pattern
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if _PYTHON_VERSION > (3, 2):
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# ditch start and end characters
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start, _, end = self._glob_to_re('_').partition('_')
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if pattern:
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pattern_re = self._glob_to_re(pattern)
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if _PYTHON_VERSION > (3, 2):
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assert pattern_re.startswith(start) and pattern_re.endswith(end)
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else:
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pattern_re = ''
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base = re.escape(os.path.join(self.base, ''))
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if prefix is not None:
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# ditch end of pattern character
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if _PYTHON_VERSION <= (3, 2):
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empty_pattern = self._glob_to_re('')
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prefix_re = self._glob_to_re(prefix)[:-len(empty_pattern)]
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else:
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prefix_re = self._glob_to_re(prefix)
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assert prefix_re.startswith(start) and prefix_re.endswith(end)
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prefix_re = prefix_re[len(start): len(prefix_re) - len(end)]
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sep = os.sep
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if os.sep == '\\':
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sep = r'\\'
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if _PYTHON_VERSION <= (3, 2):
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pattern_re = '^' + base + sep.join((prefix_re,
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'.*' + pattern_re))
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else:
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pattern_re = pattern_re[len(start): len(pattern_re) - len(end)]
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pattern_re = r'%s%s%s%s.*%s%s' % (start, base, prefix_re, sep,
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pattern_re, end)
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else: # no prefix -- respect anchor flag
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if anchor:
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if _PYTHON_VERSION <= (3, 2):
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pattern_re = '^' + base + pattern_re
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else:
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pattern_re = r'%s%s%s' % (start, base, pattern_re[len(start):])
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return re.compile(pattern_re)
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def _glob_to_re(self, pattern):
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"""Translate a shell-like glob pattern to a regular expression.
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Return a string containing the regex. Differs from
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'fnmatch.translate()' in that '*' does not match "special characters"
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(which are platform-specific).
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"""
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pattern_re = fnmatch.translate(pattern)
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# '?' and '*' in the glob pattern become '.' and '.*' in the RE, which
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# IMHO is wrong -- '?' and '*' aren't supposed to match slash in Unix,
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# and by extension they shouldn't match such "special characters" under
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# any OS. So change all non-escaped dots in the RE to match any
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# character except the special characters (currently: just os.sep).
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sep = os.sep
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if os.sep == '\\':
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# we're using a regex to manipulate a regex, so we need
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# to escape the backslash twice
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sep = r'\\\\'
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escaped = r'\1[^%s]' % sep
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pattern_re = re.sub(r'((?<!\\)(\\\\)*)\.', escaped, pattern_re)
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return pattern_re
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