Mercurial > hgrepos > Python > apps > py-cutils

annotate cutils/util/walk.py @ 203:3a85f7bbe0b1

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Common static method for some alternative encodings
author Franz Glasner <fzglas.hg@dom66.de>
date Tue, 21 Jan 2025 18:57:02 +0100
parents 58d93453c307
children ca9d5a0dc9bb
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1 # -*- coding: utf-8 -*-
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2 # :-
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3 # :Copyright: (c) 2020-2025 Franz Glasner
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4 # :License: BSD-3-Clause
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5 # :-
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6 r"""Utility sub-module to implement a heavily customized :func:`os.walk`.
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7
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8 """
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9
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10 from __future__ import print_function, absolute_import
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11
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13 __all__ = ["WalkDirEntry", "ScanDir", "getfsencoding"]
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14
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15
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16 import os
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17 try:
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18 from os import scandir
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19 except ImportError:
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20 try:
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21 from scandir import scandir
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22 except ImportError:
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23 scandir = None
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24 import sys
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25
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26 from . import PY2
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28
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29 _notset = object()
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30
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31
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32 _FSENCODING = sys.getfilesystemencoding()
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33
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34
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35 if PY2:
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36
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37 def _unix_path(s):
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38 if isinstance(s, bytes):
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39 return s.replace(b"\\", b"/")
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40 return s.replace(u"\\", u"/")
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41
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42 else:
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43
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44 def _unix_path(s):
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45 return s.replace("\\", "/")
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47
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48 class WalkDirEntry(object):
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49
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50 """A :class:`os.DirEntry` alike to be used in :func:`walk` and for
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51 its results.
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52
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53 """
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54
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55 __slots__ = ("_name", "_path", # encoded as given in the ctor
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56 "_is_symlink", "_is_dir", "_stat_result",
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57 "_alt_fsname", "_alt_u8name")
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58
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59 def __init__(self, name, path):
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60 self._name = name # the name as given in the constructor
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61 """The name exactly as given in the ctor"""
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62 self._path = _unix_path(path)
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63 """The path as given in the ctor -- but normalized to have slashes"""
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64 self._is_symlink = self._is_dir = self._stat_result = None
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65 self._alt_fsname = self._alt_u8name = _notset
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66
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67 @property
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68 def name(self):
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69 """The original name exactly as given in the ctor"""
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70 return self._name
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71
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72 @property
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73 def path(self):
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74 """The original path exactly as given in the ctor."""
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75 return self._path
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76
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77 @property
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78 def fsname(self):
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79 """The name as bytes for the filesystem.
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80
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81 :rtype: bytes or None
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82
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83 """
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84 if PY2:
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85 if isinstance(self._name, bytes):
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86 return self._name
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87 try:
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88 return self._name.encode(_FSENCODING, "strict")
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89 except UnicodeError:
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90 return None
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91 else:
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92 return os.fsencode(self._name)
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93
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94 @property
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95 def alt_fsname(self):
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96 """Alternative and "escaped" filesystem name -- always bytes.
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97
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98 :rtype: bytes
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99
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100 """
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101 if self._alt_fsname is _notset:
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102 self._alt_fsname = WalkDirEntry.alt_fs(self._name)
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103 return self._alt_fsname
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104
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105 @property
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106 def fspath(self):
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107 """Always bytes.
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108
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109 :rtype: bytes or None
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110
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111 """
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112 if PY2:
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113 if isinstance(self._path, bytes):
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114 return self._path
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115 try:
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116 return self._path.encode(_FSENCODING, "strict")
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117 except UnicodeError:
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118 return None
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119 else:
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120 return os.fsencode(self._path)
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121
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122 @property
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123 def alt_fspath(self):
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124 """Alternative and "escaped" filesystem path -- always bytes.
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parents: 199
diff changeset
125
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diff changeset
126 :rtype: bytes
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diff changeset
127
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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diff changeset
128 """
203
3a85f7bbe0b1 Common static method for some alternative encodings
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parents: 201
diff changeset
129 return WalkDirEntry.alt_fs(self._path)
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diff changeset
130
3a85f7bbe0b1 Common static method for some alternative encodings
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parents: 201
diff changeset
131 @staticmethod
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parents: 201
diff changeset
132 def alt_fs(what):
201
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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diff changeset
133 if PY2:
203
3a85f7bbe0b1 Common static method for some alternative encodings
Franz Glasner <fzglas.hg@dom66.de>
parents: 201
diff changeset
134 if isinstance(what, bytes):
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Franz Glasner <fzglas.hg@dom66.de>
parents: 201
diff changeset
135 return what
3a85f7bbe0b1 Common static method for some alternative encodings
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parents: 201
diff changeset
136 return what.encode(_FSENCODING, "backslashreplace")
201
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
137 else:
203
3a85f7bbe0b1 Common static method for some alternative encodings
Franz Glasner <fzglas.hg@dom66.de>
parents: 201
diff changeset
138 return os.fsencode(what)
201
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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diff changeset
139
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
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diff changeset
140 @property
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parents: 199
diff changeset
141 def uname(self):
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parents: 199
diff changeset
142 """Always "real", strictly encoded Unicode or `None` if this is not
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
143 possible.
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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diff changeset
144
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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diff changeset
145 :rtype: text or None
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
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diff changeset
146
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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diff changeset
147 """
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diff changeset
148 if PY2:
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diff changeset
149 if isinstance(self._name, bytes):
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diff changeset
150 try:
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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diff changeset
151 return self._name.decode(_FSENCODING, "strict")
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diff changeset
152 except UnicodeError:
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diff changeset
153 return None
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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diff changeset
154 else:
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diff changeset
155 return self._name
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parents: 199
diff changeset
156 else:
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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parents: 199
diff changeset
157 try:
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diff changeset
158 self._name.encode("utf-8", "strict")
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diff changeset
159 except UnicodeError:
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diff changeset
160 return None
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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diff changeset
161 return self._name
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parents: 199
diff changeset
162
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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diff changeset
163 @property
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diff changeset
164 def upath(self):
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diff changeset
165 """Always "real", strictly encoded Unicode or `None` if this is not
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
166 possible.
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
167
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
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diff changeset
168 :rtype: text or None
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
169
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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diff changeset
170 """
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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diff changeset
171 if PY2:
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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parents: 199
diff changeset
172 if isinstance(self._path, bytes):
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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parents: 199
diff changeset
173 try:
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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diff changeset
174 return self._path.decode(_FSENCODING, "strict")
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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parents: 199
diff changeset
175 except UnicodeError:
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
176 return None
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
177 else:
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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parents: 199
diff changeset
178 return self._path
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
179 else:
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
180 try:
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
181 self._path.encode("utf-8", "strict")
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
182 except UnicodeError:
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
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diff changeset
183 return None
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
184 return self._path
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
185
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
186 @property
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
187 def u8name(self):
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
188 """`.uname` as UTF-8 or `None` (as strict as `uname`)"""
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
189 n = self.uname
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
190 return n if n is None else n.encode("utf-8", "strict")
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
191
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
192 @property
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
193 def u8path(self):
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
194 """`.upath` as UTF-8 or `None` (as strict as `upath`"""
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
195 p = self.upath
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
196 return p if p is None else p.encode("utf-8", "strict")
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
197
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
198 @property
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
199 def alt_u8name(self):
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
200 if self._alt_u8name is _notset:
203
3a85f7bbe0b1 Common static method for some alternative encodings
Franz Glasner <fzglas.hg@dom66.de>
parents: 201
diff changeset
201 self._alt_u8name = WalkDirEntry.alt_u8(self._name)
201
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
202 return self._alt_u8name
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
203
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
204 @property
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
205 def alt_u8path(self):
203
3a85f7bbe0b1 Common static method for some alternative encodings
Franz Glasner <fzglas.hg@dom66.de>
parents: 201
diff changeset
206 return WalkDirEntry.alt_u8(self._path)
3a85f7bbe0b1 Common static method for some alternative encodings
Franz Glasner <fzglas.hg@dom66.de>
parents: 201
diff changeset
207
3a85f7bbe0b1 Common static method for some alternative encodings
Franz Glasner <fzglas.hg@dom66.de>
parents: 201
diff changeset
208 @staticmethod
3a85f7bbe0b1 Common static method for some alternative encodings
Franz Glasner <fzglas.hg@dom66.de>
parents: 201
diff changeset
209 def alt_u8(what):
201
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
210 if PY2:
203
3a85f7bbe0b1 Common static method for some alternative encodings
Franz Glasner <fzglas.hg@dom66.de>
parents: 201
diff changeset
211 if isinstance(what, bytes):
201
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
212 try:
203
3a85f7bbe0b1 Common static method for some alternative encodings
Franz Glasner <fzglas.hg@dom66.de>
parents: 201
diff changeset
213 return (what.decode(_FSENCODING, "strict")
201
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
214 .encode("utf-8", "strict"))
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
215 except UnicodeError:
203
3a85f7bbe0b1 Common static method for some alternative encodings
Franz Glasner <fzglas.hg@dom66.de>
parents: 201
diff changeset
216 return (WalkDirEntry.surrogate_decode(what)
201
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
217 .encode("ascii", "backslashreplace"))
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
218 else:
203
3a85f7bbe0b1 Common static method for some alternative encodings
Franz Glasner <fzglas.hg@dom66.de>
parents: 201
diff changeset
219 return what.encode("ascii", "backslashreplace")
201
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
220 else:
203
3a85f7bbe0b1 Common static method for some alternative encodings
Franz Glasner <fzglas.hg@dom66.de>
parents: 201
diff changeset
221 return what.encode("utf-8", "backslashreplace")
121
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
222
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
223 @property
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
224 def is_symlink(self):
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
225 return self._is_symlink
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
226
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
227 @property
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
228 def is_dir(self):
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
229 return self._is_dir
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
230
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
231 @property
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
232 def stat(self):
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
233 return self._stat_result
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
234
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
235 def __repr__(self):
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
236 tag = ""
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
237 if self._is_symlink:
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
238 tag += "l"
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
239 if self._is_dir:
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
240 tag += "d"
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
241 if tag:
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
242 return "<WalkDirEntry %r (%s)>" % (self._name, tag)
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
243 return "<WalkDirEntry %r>" % (self._name,)
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
244
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
245 @classmethod
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
246 def from_direntry(cls_, entry):
201
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
Franz Glasner <fzglas.hg@dom66.de>
parents: 199
diff changeset
247 w = cls_(entry.name, entry.path)
121
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
248 try:
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
249 w._is_dir = entry.is_dir(follow_symlinks=True)
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
250 except OSError:
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
251 #
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
252 # If is_dir() raises an OSError, consider that the entry
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
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253 # is not a directory, same behaviour than os.path.isdir().
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254 #
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255 w._is_dir = False
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diff changeset
256 try:
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257 w._is_symlink = entry.is_symlink()
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258 except OSError:
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259 #
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260 # If is_symlink() raises an OSError, consider that the entry
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261 # is not a symbolic link, same behaviour than os.path.islink().
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262 #
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263 w._is_symlink = False
156
481cc9b26861 Calculate "stat()" for directories also in a WalkDirEntry
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264 # Do not supress errors here and (consistently) follow symlinks
481cc9b26861 Calculate "stat()" for directories also in a WalkDirEntry
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265 w._stat_result = entry.stat(follow_symlinks=True)
121
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266 return w
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267
162
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diff changeset
268 @classmethod
201
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269 def from_path_name(cls_, path, name, _do_stat=True):
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270 """`_nostat` is to be used only for testing purposes"""
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271 w = cls_(name, os.path.join(path, name))
162
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diff changeset
272 try:
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273 w._is_dir = os.path.isdir(w._path)
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274 except OSError:
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275 #
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276 # If is_dir() raises an OSError, consider that the entry
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277 # is not a directory, same behaviour than os.path.isdir().
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278 #
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279 w._is_dir = False
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diff changeset
280 try:
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281 w._is_symlink = os.path.islink(w._path)
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282 except OSError:
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283 #
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284 # If is_symlink() raises an OSError, consider that the entry
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285 # is not a symbolic link, same behaviour than os.path.islink().
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286 #
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287 w._is_symlink = False
201
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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diff changeset
288 if _do_stat:
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diff changeset
289 w._stat_result = os.stat(w._path)
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diff changeset
290 return w
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291
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diff changeset
292 @classmethod
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diff changeset
293 def from_readlink(cls_, path):
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diff changeset
294 w = cls_(os.path.basename(path), path)
162
29dd5528174c Implement walk._walk() using os.listdir() also.
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diff changeset
295 return w
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diff changeset
296
121
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
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297 @staticmethod
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298 def sort_key(entry):
201
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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diff changeset
299 return entry.alt_fsname # because it should never throw
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diff changeset
300
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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diff changeset
301 @staticmethod
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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diff changeset
302 def alt_sort_key(entry):
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diff changeset
303 return entry.alt_u8name # because it should never throw
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diff changeset
304
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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diff changeset
305 if PY2:
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diff changeset
306
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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diff changeset
307 @staticmethod
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diff changeset
308 def surrogate_decode(what):
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diff changeset
309 """Decode the bytes object `what` using surrogates from :pep:`383`
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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diff changeset
310 for all non-ASCII octets.
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diff changeset
311
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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diff changeset
312 """
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diff changeset
313 uwhat = []
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diff changeset
314 assert isinstance(what, bytes)
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diff changeset
315 for ch in what:
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diff changeset
316 chcode = ord(ch)
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diff changeset
317 if chcode <= 0x7f:
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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diff changeset
318 uwhat.append(unichr(chcode)) # noqa: F821 unichr
58d93453c307 Much more encoding-related methods for DirWalkEntry and some unittests
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diff changeset
319 else:
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diff changeset
320 uwhat.append(unichr(0xDC00 + chcode)) # noqa: F821 unichr
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diff changeset
321 return u"".join(uwhat)
121
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322
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
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diff changeset
323
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
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diff changeset
324 if scandir:
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
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diff changeset
325
178
dac26a2d9de5 Cleanup: remove non used walk-code
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diff changeset
326 class ScanDir(object):
175
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
327
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
328 """An :func:`os.scandir` wrapper that is always an iterator and
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
329 a context manager.
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
330
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
331 """
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
332
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
333 __slots__ = ("_scandir_it", )
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
334
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
335 def __init__(self, path):
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
336 super(ScanDir, self).__init__()
195
e5f6f4db9157 Use the imported "scandir()" implementation instead always the "os.scandir"
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diff changeset
337 self._scandir_it = scandir(path)
175
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
338
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
339 def __iter__(self):
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
340 return self
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
341
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
342 def __next__(self):
199
b2aba84ca426 Implement a "close()" method for cutils.util.walk.ScanDir.
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diff changeset
343 if self._scandir_it is None:
b2aba84ca426 Implement a "close()" method for cutils.util.walk.ScanDir.
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diff changeset
344 raise StopIteration("closed")
175
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
345 return WalkDirEntry.from_direntry(next(self._scandir_it))
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
346
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
347 if PY2:
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
348 next = __next__
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
349
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
350 def __enter__(self):
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
351 return self
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
352
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
Franz Glasner <fzglas.hg@dom66.de>
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diff changeset
353 def __exit__(self, *args, **kwds):
199
b2aba84ca426 Implement a "close()" method for cutils.util.walk.ScanDir.
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diff changeset
354 self.close()
b2aba84ca426 Implement a "close()" method for cutils.util.walk.ScanDir.
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diff changeset
355
b2aba84ca426 Implement a "close()" method for cutils.util.walk.ScanDir.
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diff changeset
356 def close(self):
b2aba84ca426 Implement a "close()" method for cutils.util.walk.ScanDir.
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diff changeset
357 if self._scandir_it is not None:
b2aba84ca426 Implement a "close()" method for cutils.util.walk.ScanDir.
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diff changeset
358 if hasattr(self._scandir_it, "close"):
b2aba84ca426 Implement a "close()" method for cutils.util.walk.ScanDir.
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diff changeset
359 self._scandir_it.close()
b2aba84ca426 Implement a "close()" method for cutils.util.walk.ScanDir.
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diff changeset
360 self._scandir_it = None
175
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
Franz Glasner <fzglas.hg@dom66.de>
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diff changeset
361
121
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
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parents:
diff changeset
362 else:
2dc26a2f3d1c A heavily customized "os.walk()" alike to support the coming treeview implementation
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parents:
diff changeset
363
178
dac26a2d9de5 Cleanup: remove non used walk-code
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parents: 177
diff changeset
364 class ScanDir(object):
175
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
Franz Glasner <fzglas.hg@dom66.de>
parents: 164
diff changeset
365
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
Franz Glasner <fzglas.hg@dom66.de>
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diff changeset
366 """An :func:`os.scandir` wrapper that is always an iterator and
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
367 a context manager.
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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parents: 164
diff changeset
368
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
369 """
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
370
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
371 __slots__ = ("_listdir_it", "_path")
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diff changeset
372
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
373 def __init__(self, path):
506d895a8500 Implement cutils.util.walk.Scandir as a wrapper for os.scandir()
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diff changeset
374 super(ScanDir, self).__init__()
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375 self._listdir_it = iter(os.listdir(path))
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376 self._path = path
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377
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378 def __iter__(self):
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379 return self
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380
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381 def __next__(self):
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382 if self._listdir_it is None:
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383 raise StopIteration("closed")
175
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384 return WalkDirEntry.from_path_name(self._path,
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385 next(self._listdir_it))
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386
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387 if PY2:
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388 next = __next__
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389
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390 def __enter__(self):
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391 return self
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392
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393 def __exit__(self, *args, **kwds):
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394 pass
198
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395
199
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396 def close(self):
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397 pass
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398
198
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399
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400 def getfsencoding():
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401 """Return the stored _FSENCODING of this module"""
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402 return _FSENCODING