Mercurial > repos > guerler > springsuite
annotate planemo/lib/python3.7/site-packages/glob2/impl.py @ 1:56ad4e20f292 draft
"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author | guerler |
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date | Fri, 31 Jul 2020 00:32:28 -0400 |
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1 """Filename globbing utility.""" |
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2 |
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3 from __future__ import absolute_import |
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4 |
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5 import sys |
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6 import os |
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7 import re |
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8 from os.path import join |
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9 from . import fnmatch |
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10 |
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11 try: |
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12 from itertools import imap |
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13 except ImportError: |
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14 imap = map |
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15 |
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16 |
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17 class Globber(object): |
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18 |
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19 listdir = staticmethod(os.listdir) |
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20 isdir = staticmethod(os.path.isdir) |
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21 islink = staticmethod(os.path.islink) |
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22 exists = staticmethod(os.path.lexists) |
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23 |
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24 def walk(self, top, followlinks=False, sep=None): |
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25 """A simplified version of os.walk (code copied) that uses |
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26 ``self.listdir``, and the other local filesystem methods. |
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27 |
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28 Because we don't care about file/directory distinctions, only |
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29 a single list is returned. |
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30 """ |
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31 try: |
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32 names = self.listdir(top) |
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33 except os.error as err: |
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34 return |
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35 |
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36 items = [] |
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37 for name in names: |
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38 items.append(name) |
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39 |
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40 yield top, items |
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41 |
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42 for name in items: |
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43 new_path = _join_paths([top, name], sep=sep) |
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44 if followlinks or not self.islink(new_path): |
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45 for x in self.walk(new_path, followlinks): |
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46 yield x |
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47 |
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48 def glob(self, pathname, with_matches=False, include_hidden=False, recursive=True, |
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49 norm_paths=True, case_sensitive=True, sep=None): |
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50 """Return a list of paths matching a pathname pattern. |
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51 |
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52 The pattern may contain simple shell-style wildcards a la |
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53 fnmatch. However, unlike fnmatch, filenames starting with a |
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54 dot are special cases that are not matched by '*' and '?' |
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55 patterns. |
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56 |
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57 If ``include_hidden`` is True, then files and folders starting with |
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58 a dot are also returned. |
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59 """ |
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60 return list(self.iglob(pathname, with_matches, include_hidden, |
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61 norm_paths, case_sensitive, sep)) |
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62 |
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63 def iglob(self, pathname, with_matches=False, include_hidden=False, recursive=True, |
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64 norm_paths=True, case_sensitive=True, sep=None): |
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65 """Return an iterator which yields the paths matching a pathname |
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66 pattern. |
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67 |
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68 The pattern may contain simple shell-style wildcards a la |
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69 fnmatch. However, unlike fnmatch, filenames starting with a |
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70 dot are special cases that are not matched by '*' and '?' |
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71 patterns. |
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72 |
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73 If ``with_matches`` is True, then for each matching path |
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74 a 2-tuple will be returned; the second element if the tuple |
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75 will be a list of the parts of the path that matched the individual |
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76 wildcards. |
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77 |
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78 If ``include_hidden`` is True, then files and folders starting with |
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79 a dot are also returned. |
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80 """ |
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81 result = self._iglob(pathname, True, include_hidden, |
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82 norm_paths, case_sensitive, sep) |
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83 if with_matches: |
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84 return result |
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85 return imap(lambda s: s[0], result) |
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86 |
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87 def _iglob(self, pathname, rootcall, include_hidden, |
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88 norm_paths, case_sensitive, sep): |
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89 """Internal implementation that backs :meth:`iglob`. |
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90 |
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91 ``rootcall`` is required to differentiate between the user's call to |
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92 iglob(), and subsequent recursive calls, for the purposes of resolving |
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93 certain special cases of ** wildcards. Specifically, "**" is supposed |
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94 to include the current directory for purposes of globbing, but the |
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95 directory itself should never be returned. So if ** is the lastmost |
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96 part of the ``pathname`` given the user to the root call, we want to |
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97 ignore the current directory. For this, we need to know which the root |
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98 call is. |
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99 """ |
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100 |
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101 # Short-circuit if no glob magic |
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102 if not has_magic(pathname): |
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103 if self.exists(pathname): |
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104 yield pathname, () |
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105 return |
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106 |
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107 # If no directory part is left, assume the working directory |
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108 dirname, basename = os.path.split(pathname) |
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109 |
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110 # If the directory is globbed, recurse to resolve. |
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111 # If at this point there is no directory part left, we simply |
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112 # continue with dirname="", which will search the current dir. |
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113 # `os.path.split()` returns the argument itself as a dirname if it is a |
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114 # drive or UNC path. Prevent an infinite recursion if a drive or UNC path |
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115 # contains magic characters (i.e. r'\\?\C:'). |
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116 if dirname != pathname and has_magic(dirname): |
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117 # Note that this may return files, which will be ignored |
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118 # later when we try to use them as directories. |
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119 # Prefiltering them here would only require more IO ops. |
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120 dirs = self._iglob(dirname, False, include_hidden, |
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121 norm_paths, case_sensitive, sep) |
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122 else: |
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123 dirs = [(dirname, ())] |
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124 |
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125 # Resolve ``basename`` expr for every directory found |
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126 for dirname, dir_groups in dirs: |
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127 for name, groups in self.resolve_pattern(dirname, basename, |
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128 not rootcall, include_hidden, |
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129 norm_paths, case_sensitive, sep): |
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130 yield _join_paths([dirname, name], sep=sep), dir_groups + groups |
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131 |
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132 def resolve_pattern(self, dirname, pattern, globstar_with_root, include_hidden, |
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133 norm_paths, case_sensitive, sep): |
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134 """Apply ``pattern`` (contains no path elements) to the |
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135 literal directory in ``dirname``. |
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136 |
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137 If pattern=='', this will filter for directories. This is |
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138 a special case that happens when the user's glob expression ends |
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139 with a slash (in which case we only want directories). It simpler |
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140 and faster to filter here than in :meth:`_iglob`. |
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141 """ |
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142 |
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143 if sys.version_info[0] == 3: |
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144 if isinstance(pattern, bytes): |
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145 dirname = bytes(os.curdir, 'ASCII') |
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146 else: |
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147 if isinstance(pattern, unicode) and not isinstance(dirname, unicode): |
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148 dirname = unicode(dirname, sys.getfilesystemencoding() or |
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149 sys.getdefaultencoding()) |
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150 |
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151 # If no magic, short-circuit, only check for existence |
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152 if not has_magic(pattern): |
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153 if pattern == '': |
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154 if self.isdir(dirname): |
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155 return [(pattern, ())] |
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156 else: |
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157 if self.exists(_join_paths([dirname, pattern], sep=sep)): |
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158 return [(pattern, ())] |
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159 return [] |
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160 |
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161 if not dirname: |
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162 dirname = os.curdir |
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163 |
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164 try: |
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165 if pattern == '**': |
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166 # Include the current directory in **, if asked; by adding |
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167 # an empty string as opposed to '.', we spare ourselves |
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168 # having to deal with os.path.normpath() later. |
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169 names = [''] if globstar_with_root else [] |
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170 for top, entries in self.walk(dirname, sep=sep): |
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171 _mkabs = lambda s: _join_paths([top[len(dirname) + 1:], s], sep=sep) |
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172 names.extend(map(_mkabs, entries)) |
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173 # Reset pattern so that fnmatch(), which does not understand |
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174 # ** specifically, will only return a single group match. |
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175 pattern = '*' |
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176 else: |
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177 names = self.listdir(dirname) |
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178 except os.error: |
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179 return [] |
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180 |
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181 if not include_hidden and not _ishidden(pattern): |
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182 # Remove hidden files, but take care to ensure |
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183 # that the empty string we may have added earlier remains. |
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184 # Do not filter out the '' that we might have added earlier |
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185 names = filter(lambda x: not x or not _ishidden(x), names) |
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186 return fnmatch.filter(names, pattern, norm_paths, case_sensitive, sep) |
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187 |
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188 |
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189 default_globber = Globber() |
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190 glob = default_globber.glob |
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191 iglob = default_globber.iglob |
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192 del default_globber |
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193 |
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194 |
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195 magic_check = re.compile('[*?[]') |
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196 magic_check_bytes = re.compile(b'[*?[]') |
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197 |
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198 |
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199 def has_magic(s): |
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200 if isinstance(s, bytes): |
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201 match = magic_check_bytes.search(s) |
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202 else: |
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203 match = magic_check.search(s) |
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204 return match is not None |
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205 |
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206 |
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207 def _ishidden(path): |
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208 return path[0] in ('.', b'.'[0]) |
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209 |
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210 |
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211 def _join_paths(paths, sep=None): |
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212 path = join(*paths) |
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213 if sep: |
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214 path = re.sub(r'\/', sep, path) # cached internally |
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215 return path |
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216 |