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annotate planemo/lib/python3.7/site-packages/setuptools/glob.py @ 1:56ad4e20f292 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:32:28 -0400
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1
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1 """
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2 Filename globbing utility. Mostly a copy of `glob` from Python 3.5.
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3
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4 Changes include:
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5 * `yield from` and PEP3102 `*` removed.
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6 * Hidden files are not ignored.
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7 """
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8
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9 import os
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10 import re
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11 import fnmatch
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12
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13 __all__ = ["glob", "iglob", "escape"]
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14
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15
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16 def glob(pathname, recursive=False):
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17 """Return a list of paths matching a pathname pattern.
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18
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19 The pattern may contain simple shell-style wildcards a la
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20 fnmatch. However, unlike fnmatch, filenames starting with a
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21 dot are special cases that are not matched by '*' and '?'
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22 patterns.
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23
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24 If recursive is true, the pattern '**' will match any files and
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25 zero or more directories and subdirectories.
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26 """
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27 return list(iglob(pathname, recursive=recursive))
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28
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29
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30 def iglob(pathname, recursive=False):
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31 """Return an iterator which yields the paths matching a pathname pattern.
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32
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33 The pattern may contain simple shell-style wildcards a la
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34 fnmatch. However, unlike fnmatch, filenames starting with a
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35 dot are special cases that are not matched by '*' and '?'
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36 patterns.
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37
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38 If recursive is true, the pattern '**' will match any files and
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39 zero or more directories and subdirectories.
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40 """
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41 it = _iglob(pathname, recursive)
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42 if recursive and _isrecursive(pathname):
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43 s = next(it) # skip empty string
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44 assert not s
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45 return it
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46
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47
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48 def _iglob(pathname, recursive):
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49 dirname, basename = os.path.split(pathname)
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50 if not has_magic(pathname):
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51 if basename:
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52 if os.path.lexists(pathname):
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53 yield pathname
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54 else:
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55 # Patterns ending with a slash should match only directories
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56 if os.path.isdir(dirname):
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57 yield pathname
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58 return
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59 if not dirname:
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60 if recursive and _isrecursive(basename):
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61 for x in glob2(dirname, basename):
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62 yield x
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63 else:
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64 for x in glob1(dirname, basename):
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65 yield x
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66 return
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67 # `os.path.split()` returns the argument itself as a dirname if it is a
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68 # drive or UNC path. Prevent an infinite recursion if a drive or UNC path
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69 # contains magic characters (i.e. r'\\?\C:').
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70 if dirname != pathname and has_magic(dirname):
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71 dirs = _iglob(dirname, recursive)
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72 else:
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73 dirs = [dirname]
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74 if has_magic(basename):
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75 if recursive and _isrecursive(basename):
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76 glob_in_dir = glob2
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77 else:
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78 glob_in_dir = glob1
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79 else:
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80 glob_in_dir = glob0
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81 for dirname in dirs:
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82 for name in glob_in_dir(dirname, basename):
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83 yield os.path.join(dirname, name)
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84
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85
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86 # These 2 helper functions non-recursively glob inside a literal directory.
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87 # They return a list of basenames. `glob1` accepts a pattern while `glob0`
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88 # takes a literal basename (so it only has to check for its existence).
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89
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90
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91 def glob1(dirname, pattern):
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92 if not dirname:
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93 if isinstance(pattern, bytes):
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94 dirname = os.curdir.encode('ASCII')
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95 else:
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96 dirname = os.curdir
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97 try:
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98 names = os.listdir(dirname)
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99 except OSError:
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100 return []
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101 return fnmatch.filter(names, pattern)
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102
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103
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104 def glob0(dirname, basename):
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105 if not basename:
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106 # `os.path.split()` returns an empty basename for paths ending with a
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107 # directory separator. 'q*x/' should match only directories.
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108 if os.path.isdir(dirname):
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109 return [basename]
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110 else:
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111 if os.path.lexists(os.path.join(dirname, basename)):
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112 return [basename]
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113 return []
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114
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115
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116 # This helper function recursively yields relative pathnames inside a literal
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117 # directory.
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118
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119
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120 def glob2(dirname, pattern):
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121 assert _isrecursive(pattern)
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122 yield pattern[:0]
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123 for x in _rlistdir(dirname):
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124 yield x
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125
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126
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127 # Recursively yields relative pathnames inside a literal directory.
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128 def _rlistdir(dirname):
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129 if not dirname:
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130 if isinstance(dirname, bytes):
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131 dirname = os.curdir.encode('ASCII')
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132 else:
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133 dirname = os.curdir
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134 try:
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135 names = os.listdir(dirname)
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136 except os.error:
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137 return
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138 for x in names:
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139 yield x
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140 path = os.path.join(dirname, x) if dirname else x
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141 for y in _rlistdir(path):
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142 yield os.path.join(x, y)
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143
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144
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145 magic_check = re.compile('([*?[])')
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146 magic_check_bytes = re.compile(b'([*?[])')
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147
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148
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149 def has_magic(s):
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150 if isinstance(s, bytes):
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151 match = magic_check_bytes.search(s)
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152 else:
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153 match = magic_check.search(s)
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154 return match is not None
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155
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156
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157 def _isrecursive(pattern):
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158 if isinstance(pattern, bytes):
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159 return pattern == b'**'
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160 else:
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161 return pattern == '**'
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162
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163
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164 def escape(pathname):
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165 """Escape all special characters.
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166 """
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167 # Escaping is done by wrapping any of "*?[" between square brackets.
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168 # Metacharacters do not work in the drive part and shouldn't be escaped.
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169 drive, pathname = os.path.splitdrive(pathname)
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170 if isinstance(pathname, bytes):
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171 pathname = magic_check_bytes.sub(br'[\1]', pathname)
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172 else:
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173 pathname = magic_check.sub(r'[\1]', pathname)
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174 return drive + pathname