annotate mercurial/pathutil.py @ 47902:4cade5e944c2

dirstatemap: use the default code to handle "removed" case This one is very easy. Differential Revision: https://phab.mercurial-scm.org/D11327
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Fri, 16 Jul 2021 17:23:40 +0200
parents a9f38b144096
children e02f9af7aed1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 from __future__ import absolute_import
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2
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3 import contextlib
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4 import errno
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5 import os
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6 import posixpath
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7 import stat
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8
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9 from .i18n import _
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10 from . import (
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11 encoding,
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12 error,
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13 policy,
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14 pycompat,
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15 util,
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16 )
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17
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18 if pycompat.TYPE_CHECKING:
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19 from typing import (
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20 Any,
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21 Callable,
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22 Iterator,
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23 Optional,
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24 )
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25
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26
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27 rustdirs = policy.importrust('dirstate', 'Dirs')
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28 parsers = policy.importmod('parsers')
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29
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30
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31 def _lowerclean(s):
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32 # type: (bytes) -> bytes
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33 return encoding.hfsignoreclean(s.lower())
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34
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35
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36 class pathauditor(object):
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37 """ensure that a filesystem path contains no banned components.
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38 the following properties of a path are checked:
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39
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40 - ends with a directory separator
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41 - under top-level .hg
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42 - starts at the root of a windows drive
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43 - contains ".."
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44
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45 More check are also done about the file system states:
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46 - traverses a symlink (e.g. a/symlink_here/b)
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47 - inside a nested repository (a callback can be used to approve
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48 some nested repositories, e.g., subrepositories)
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49
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50 The file system checks are only done when 'realfs' is set to True (the
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51 default). They should be disable then we are auditing path for operation on
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52 stored history.
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53
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54 If 'cached' is set to True, audited paths and sub-directories are cached.
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55 Be careful to not keep the cache of unmanaged directories for long because
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56 audited paths may be replaced with symlinks.
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57 """
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58
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59 def __init__(self, root, callback=None, realfs=True, cached=False):
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60 self.audited = set()
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61 self.auditeddir = set()
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62 self.root = root
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63 self._realfs = realfs
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64 self._cached = cached
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65 self.callback = callback
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66 if os.path.lexists(root) and not util.fscasesensitive(root):
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67 self.normcase = util.normcase
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68 else:
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69 self.normcase = lambda x: x
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70
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71 def __call__(self, path, mode=None):
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72 # type: (bytes, Optional[Any]) -> None
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73 """Check the relative path.
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74 path may contain a pattern (e.g. foodir/**.txt)"""
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75
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76 path = util.localpath(path)
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77 normpath = self.normcase(path)
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78 if normpath in self.audited:
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79 return
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80 # AIX ignores "/" at end of path, others raise EISDIR.
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81 if util.endswithsep(path):
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82 raise error.Abort(_(b"path ends in directory separator: %s") % path)
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83 parts = util.splitpath(path)
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84 if (
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85 os.path.splitdrive(path)[0]
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86 or _lowerclean(parts[0]) in (b'.hg', b'.hg.', b'')
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87 or pycompat.ospardir in parts
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88 ):
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89 raise error.Abort(_(b"path contains illegal component: %s") % path)
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90 # Windows shortname aliases
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91 for p in parts:
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92 if b"~" in p:
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93 first, last = p.split(b"~", 1)
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94 if last.isdigit() and first.upper() in [b"HG", b"HG8B6C"]:
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95 raise error.Abort(
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96 _(b"path contains illegal component: %s") % path
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97 )
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98 if b'.hg' in _lowerclean(path):
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99 lparts = [_lowerclean(p) for p in parts]
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100 for p in b'.hg', b'.hg.':
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101 if p in lparts[1:]:
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102 pos = lparts.index(p)
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103 base = os.path.join(*parts[:pos])
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104 raise error.Abort(
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105 _(b"path '%s' is inside nested repo %r")
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106 % (path, pycompat.bytestr(base))
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107 )
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108
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109 normparts = util.splitpath(normpath)
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110 assert len(parts) == len(normparts)
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111
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112 parts.pop()
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113 normparts.pop()
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114 # It's important that we check the path parts starting from the root.
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115 # We don't want to add "foo/bar/baz" to auditeddir before checking if
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116 # there's a "foo/.hg" directory. This also means we won't accidentally
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117 # traverse a symlink into some other filesystem (which is potentially
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118 # expensive to access).
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119 for i in range(len(parts)):
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120 prefix = pycompat.ossep.join(parts[: i + 1])
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121 normprefix = pycompat.ossep.join(normparts[: i + 1])
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122 if normprefix in self.auditeddir:
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123 continue
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124 if self._realfs:
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125 self._checkfs(prefix, path)
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126 if self._cached:
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127 self.auditeddir.add(normprefix)
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Augie Fackler <raf@durin42.com>
parents:
diff changeset
128
33649
377e8ddaebef pathauditor: disable cache of audited paths by default (issue5628)
Yuya Nishihara <yuya@tcha.org>
parents: 33435
diff changeset
129 if self._cached:
377e8ddaebef pathauditor: disable cache of audited paths by default (issue5628)
Yuya Nishihara <yuya@tcha.org>
parents: 33435
diff changeset
130 self.audited.add(normpath)
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Augie Fackler <raf@durin42.com>
parents:
diff changeset
131
27231
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Pierre-Yves David <pierre-yves.david@fb.com>
parents: 26587
diff changeset
132 def _checkfs(self, prefix, path):
46646
5d483e3bb60e typing: add some type annotations to mercurial/pathutil.py
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parents: 45942
diff changeset
133 # type: (bytes, bytes) -> None
27231
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parents: 26587
diff changeset
134 """raise exception if a file system backed check fails"""
6d29ce250a3d pathauditor: move file system specific check in their own function
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parents: 26587
diff changeset
135 curpath = os.path.join(self.root, prefix)
6d29ce250a3d pathauditor: move file system specific check in their own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 26587
diff changeset
136 try:
6d29ce250a3d pathauditor: move file system specific check in their own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 26587
diff changeset
137 st = os.lstat(curpath)
6d29ce250a3d pathauditor: move file system specific check in their own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 26587
diff changeset
138 except OSError as err:
6d29ce250a3d pathauditor: move file system specific check in their own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 26587
diff changeset
139 # EINVAL can be raised as invalid path syntax under win32.
6d29ce250a3d pathauditor: move file system specific check in their own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 26587
diff changeset
140 # They must be ignored for patterns can be checked too.
6d29ce250a3d pathauditor: move file system specific check in their own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 26587
diff changeset
141 if err.errno not in (errno.ENOENT, errno.ENOTDIR, errno.EINVAL):
6d29ce250a3d pathauditor: move file system specific check in their own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 26587
diff changeset
142 raise
6d29ce250a3d pathauditor: move file system specific check in their own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 26587
diff changeset
143 else:
6d29ce250a3d pathauditor: move file system specific check in their own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 26587
diff changeset
144 if stat.S_ISLNK(st.st_mode):
43077
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Augie Fackler <augie@google.com>
parents: 43076
diff changeset
145 msg = _(b'path %r traverses symbolic link %r') % (
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 38592
diff changeset
146 pycompat.bytestr(path),
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 38592
diff changeset
147 pycompat.bytestr(prefix),
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 38592
diff changeset
148 )
27235
054cd38a2f19 pathutil: use temporary variables instead of complicated wrapping
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 27232
diff changeset
149 raise error.Abort(msg)
43076
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parents: 38592
diff changeset
150 elif stat.S_ISDIR(st.st_mode) and os.path.isdir(
43077
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Augie Fackler <augie@google.com>
parents: 43076
diff changeset
151 os.path.join(curpath, b'.hg')
43076
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Augie Fackler <augie@google.com>
parents: 38592
diff changeset
152 ):
27231
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Pierre-Yves David <pierre-yves.david@fb.com>
parents: 26587
diff changeset
153 if not self.callback or not self.callback(curpath):
43077
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Augie Fackler <augie@google.com>
parents: 43076
diff changeset
154 msg = _(b"path '%s' is inside nested repo %r")
36649
d3b893ec5f08 py3: fix formatting of path-auditing errors
Yuya Nishihara <yuya@tcha.org>
parents: 36647
diff changeset
155 raise error.Abort(msg % (path, pycompat.bytestr(prefix)))
27231
6d29ce250a3d pathauditor: move file system specific check in their own function
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 26587
diff changeset
156
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parents:
diff changeset
157 def check(self, path):
46646
5d483e3bb60e typing: add some type annotations to mercurial/pathutil.py
Matt Harbison <matt_harbison@yahoo.com>
parents: 45942
diff changeset
158 # type: (bytes) -> bool
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parents:
diff changeset
159 try:
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
160 self(path)
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
161 return True
26587
56b2bcea2529 error: get Abort from 'error' instead of 'util'
Pierre-Yves David <pierre-yves.david@fb.com>
parents: 25964
diff changeset
162 except (OSError, error.Abort):
20033
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Augie Fackler <raf@durin42.com>
parents:
diff changeset
163 return False
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
164
44865
233ee525dcef grep: reduce the cost of pathauditor checks when grepping working copy
Valentin Gatien-Baron <valentin.gatienbaron@gmail.com>
parents: 44626
diff changeset
165 @contextlib.contextmanager
233ee525dcef grep: reduce the cost of pathauditor checks when grepping working copy
Valentin Gatien-Baron <valentin.gatienbaron@gmail.com>
parents: 44626
diff changeset
166 def cached(self):
233ee525dcef grep: reduce the cost of pathauditor checks when grepping working copy
Valentin Gatien-Baron <valentin.gatienbaron@gmail.com>
parents: 44626
diff changeset
167 if self._cached:
233ee525dcef grep: reduce the cost of pathauditor checks when grepping working copy
Valentin Gatien-Baron <valentin.gatienbaron@gmail.com>
parents: 44626
diff changeset
168 yield
233ee525dcef grep: reduce the cost of pathauditor checks when grepping working copy
Valentin Gatien-Baron <valentin.gatienbaron@gmail.com>
parents: 44626
diff changeset
169 else:
233ee525dcef grep: reduce the cost of pathauditor checks when grepping working copy
Valentin Gatien-Baron <valentin.gatienbaron@gmail.com>
parents: 44626
diff changeset
170 try:
233ee525dcef grep: reduce the cost of pathauditor checks when grepping working copy
Valentin Gatien-Baron <valentin.gatienbaron@gmail.com>
parents: 44626
diff changeset
171 self._cached = True
233ee525dcef grep: reduce the cost of pathauditor checks when grepping working copy
Valentin Gatien-Baron <valentin.gatienbaron@gmail.com>
parents: 44626
diff changeset
172 yield
233ee525dcef grep: reduce the cost of pathauditor checks when grepping working copy
Valentin Gatien-Baron <valentin.gatienbaron@gmail.com>
parents: 44626
diff changeset
173 finally:
233ee525dcef grep: reduce the cost of pathauditor checks when grepping working copy
Valentin Gatien-Baron <valentin.gatienbaron@gmail.com>
parents: 44626
diff changeset
174 self.audited.clear()
233ee525dcef grep: reduce the cost of pathauditor checks when grepping working copy
Valentin Gatien-Baron <valentin.gatienbaron@gmail.com>
parents: 44626
diff changeset
175 self.auditeddir.clear()
233ee525dcef grep: reduce the cost of pathauditor checks when grepping working copy
Valentin Gatien-Baron <valentin.gatienbaron@gmail.com>
parents: 44626
diff changeset
176 self._cached = False
233ee525dcef grep: reduce the cost of pathauditor checks when grepping working copy
Valentin Gatien-Baron <valentin.gatienbaron@gmail.com>
parents: 44626
diff changeset
177
43076
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Augie Fackler <augie@google.com>
parents: 38592
diff changeset
178
20033
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Augie Fackler <raf@durin42.com>
parents:
diff changeset
179 def canonpath(root, cwd, myname, auditor=None):
46646
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Matt Harbison <matt_harbison@yahoo.com>
parents: 45942
diff changeset
180 # type: (bytes, bytes, bytes, Optional[pathauditor]) -> bytes
45942
89a2afe31e82 formating: upgrade to black 20.8b1
Augie Fackler <raf@durin42.com>
parents: 44865
diff changeset
181 """return the canonical path of myname, given cwd and root
34980
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
182
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
183 >>> def check(root, cwd, myname):
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
184 ... a = pathauditor(root, realfs=False)
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
185 ... try:
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
186 ... return canonpath(root, cwd, myname, a)
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
187 ... except error.Abort:
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
188 ... return 'aborted'
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
189 >>> def unixonly(root, cwd, myname, expected='aborted'):
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
190 ... if pycompat.iswindows:
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
191 ... return expected
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
192 ... return check(root, cwd, myname)
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
193 >>> def winonly(root, cwd, myname, expected='aborted'):
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
194 ... if not pycompat.iswindows:
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
195 ... return expected
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
196 ... return check(root, cwd, myname)
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
197 >>> winonly(b'd:\\\\repo', b'c:\\\\dir', b'filename')
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
198 'aborted'
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
199 >>> winonly(b'c:\\\\repo', b'c:\\\\dir', b'filename')
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
200 'aborted'
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
201 >>> winonly(b'c:\\\\repo', b'c:\\\\', b'filename')
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
202 'aborted'
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
203 >>> winonly(b'c:\\\\repo', b'c:\\\\', b'repo\\\\filename',
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
204 ... b'filename')
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
205 'filename'
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
206 >>> winonly(b'c:\\\\repo', b'c:\\\\repo', b'filename', b'filename')
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
207 'filename'
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
208 >>> winonly(b'c:\\\\repo', b'c:\\\\repo\\\\subdir', b'filename',
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
209 ... b'subdir/filename')
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
210 'subdir/filename'
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
211 >>> unixonly(b'/repo', b'/dir', b'filename')
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
212 'aborted'
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
213 >>> unixonly(b'/repo', b'/', b'filename')
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
214 'aborted'
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
215 >>> unixonly(b'/repo', b'/', b'repo/filename', b'filename')
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
216 'filename'
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
217 >>> unixonly(b'/repo', b'/repo', b'filename', b'filename')
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
218 'filename'
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
219 >>> unixonly(b'/repo', b'/repo/subdir', b'filename', b'subdir/filename')
705d0f2bb677 pathutil: add doctests for canonpath()
Matt Harbison <matt_harbison@yahoo.com>
parents: 34965
diff changeset
220 'subdir/filename'
45942
89a2afe31e82 formating: upgrade to black 20.8b1
Augie Fackler <raf@durin42.com>
parents: 44865
diff changeset
221 """
20033
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
222 if util.endswithsep(root):
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
223 rootsep = root
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
224 else:
30614
cfe66dcf45c0 py3: replace os.sep with pycompat.ossep (part 2 of 4)
Pulkit Goyal <7895pulkit@gmail.com>
parents: 30332
diff changeset
225 rootsep = root + pycompat.ossep
20033
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
226 name = myname
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
227 if not os.path.isabs(name):
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
228 name = os.path.join(root, cwd, name)
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
229 name = os.path.normpath(name)
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
230 if auditor is None:
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
231 auditor = pathauditor(root)
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
232 if name != rootsep and name.startswith(rootsep):
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 38592
diff changeset
233 name = name[len(rootsep) :]
20033
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
234 auditor(name)
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
235 return util.pconvert(name)
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
236 elif name == root:
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
237 return b''
20033
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
238 else:
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
239 # Determine whether `name' is in the hierarchy at or beneath `root',
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
240 # by iterating name=dirname(name) until that causes no change (can't
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
241 # check name == '/', because that doesn't work on windows). The list
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
242 # `rel' holds the reversed list of components making up the relative
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
243 # file name we want.
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
244 rel = []
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
245 while True:
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
246 try:
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
247 s = util.samefile(name, root)
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
248 except OSError:
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
249 s = False
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
250 if s:
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
251 if not rel:
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
252 # name was actually the same as root (maybe a symlink)
43077
687b865b95ad formatting: byteify all mercurial/ and hgext/ string literals
Augie Fackler <augie@google.com>
parents: 43076
diff changeset
253 return b''
20033
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
254 rel.reverse()
f962870712da pathutil: tease out a new library to break an import cycle from canonpath use
Augie Fackler <raf@durin42.com>
parents:
diff changeset
255 name = os.path.join(*rel)
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parents:
diff changeset
256 auditor(name)
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257 return util.pconvert(name)
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258 dirname, basename = util.split(name)
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parents:
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259 rel.append(basename)
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parents:
diff changeset
260 if dirname == name:
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parents:
diff changeset
261 break
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262 name = dirname
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263
25011
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parents: 23602
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264 # A common mistake is to use -R, but specify a file relative to the repo
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265 # instead of cwd. Detect that case, and provide a hint to the user.
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266 hint = None
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267 try:
25022
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Matt Mackall <mpm@selenic.com>
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diff changeset
268 if cwd != root:
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269 canonpath(root, root, myname, auditor)
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270 relpath = util.pathto(root, cwd, b'')
38592
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271 if relpath.endswith(pycompat.ossep):
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272 relpath = relpath[:-1]
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273 hint = _(b"consider using '--cwd %s'") % relpath
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274 except error.Abort:
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275 pass
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276
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277 raise error.Abort(
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278 _(b"%s not under root '%s'") % (myname, root), hint=hint
43076
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279 )
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280
21568
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281
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282 def normasprefix(path):
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283 # type: (bytes) -> bytes
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284 """normalize the specified path as path prefix
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285
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286 Returned value can be used safely for "p.startswith(prefix)",
21568
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287 "p[len(prefix):]", and so on.
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288
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289 For efficiency, this expects "path" argument to be already
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290 normalized by "os.path.normpath", "os.path.realpath", and so on.
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291
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292 See also issue3033 for detail about need of this function.
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293
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294 >>> normasprefix(b'/foo/bar').replace(pycompat.ossep, b'/')
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295 '/foo/bar/'
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diff changeset
296 >>> normasprefix(b'/').replace(pycompat.ossep, b'/')
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297 '/'
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298 """
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diff changeset
299 d, p = os.path.splitdrive(path)
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Pulkit Goyal <7895pulkit@gmail.com>
parents: 30332
diff changeset
300 if len(p) != len(pycompat.ossep):
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301 return path + pycompat.ossep
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diff changeset
302 else:
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FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
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diff changeset
303 return path
25281
660b178f49c7 pathutil: add dirname and join functions
Durham Goode <durham@fb.com>
parents: 25022
diff changeset
304
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305
43633
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306 def finddirs(path):
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307 # type: (bytes) -> Iterator[bytes]
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diff changeset
308 pos = path.rfind(b'/')
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diff changeset
309 while pos != -1:
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diff changeset
310 yield path[:pos]
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311 pos = path.rfind(b'/', 0, pos)
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diff changeset
312 yield b''
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313
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314
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diff changeset
315 class dirs(object):
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316 '''a multiset of directory names from a set of file paths'''
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317
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318 def __init__(self, map, skip=None):
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319 """
44626
11f284c8c5e4 pathutil: document that dirs map type implies manifest/dirstate processing
Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
parents: 44358
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320 a dict map indicates a dirstate while a list indicates a manifest
45942
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diff changeset
321 """
43523
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322 self._dirs = {}
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diff changeset
323 addpath = self.addpath
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diff changeset
324 if isinstance(map, dict) and skip is not None:
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diff changeset
325 for f, s in pycompat.iteritems(map):
47541
a9f38b144096 dirstate-item: use the properties in pathutil
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parents: 46646
diff changeset
326 if s.state != skip:
43523
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diff changeset
327 addpath(f)
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diff changeset
328 elif skip is not None:
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parents: 43077
diff changeset
329 raise error.ProgrammingError(
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parents: 43077
diff changeset
330 b"skip character is only supported with a dict source"
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parents: 43077
diff changeset
331 )
c21aca51b392 utils: move the `dirs` definition in pathutil (API)
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parents: 43077
diff changeset
332 else:
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parents: 43077
diff changeset
333 for f in map:
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diff changeset
334 addpath(f)
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diff changeset
335
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diff changeset
336 def addpath(self, path):
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diff changeset
337 # type: (bytes) -> None
43523
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diff changeset
338 dirs = self._dirs
43633
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diff changeset
339 for base in finddirs(path):
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diff changeset
340 if base.endswith(b'/'):
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diff changeset
341 raise ValueError(
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diff changeset
342 "found invalid consecutive slashes in path: %r" % base
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diff changeset
343 )
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diff changeset
344 if base in dirs:
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diff changeset
345 dirs[base] += 1
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diff changeset
346 return
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diff changeset
347 dirs[base] = 1
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diff changeset
348
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diff changeset
349 def delpath(self, path):
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diff changeset
350 # type: (bytes) -> None
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diff changeset
351 dirs = self._dirs
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diff changeset
352 for base in finddirs(path):
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diff changeset
353 if dirs[base] > 1:
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diff changeset
354 dirs[base] -= 1
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diff changeset
355 return
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diff changeset
356 del dirs[base]
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diff changeset
357
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diff changeset
358 def __iter__(self):
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diff changeset
359 return iter(self._dirs)
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diff changeset
360
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diff changeset
361 def __contains__(self, d):
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diff changeset
362 # type: (bytes) -> bool
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diff changeset
363 return d in self._dirs
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diff changeset
364
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parents: 43077
diff changeset
365
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diff changeset
366 if util.safehasattr(parsers, 'dirs'):
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diff changeset
367 dirs = parsers.dirs
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diff changeset
368
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diff changeset
369 if rustdirs is not None:
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diff changeset
370 dirs = rustdirs
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diff changeset
371
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parents: 43077
diff changeset
372
25286
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Augie Fackler <augie@google.com>
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diff changeset
373 # forward two methods from posixpath that do what we need, but we'd
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diff changeset
374 # rather not let our internals know that we're thinking in posix terms
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diff changeset
375 # - instead we'll let them be oblivious.
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diff changeset
376 join = posixpath.join
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diff changeset
377 dirname = posixpath.dirname # type: Callable[[bytes], bytes]