annotate env/lib/python3.7/site-packages/glob2/fnmatch.py @ 0:26e78fe6e8c4 draft

"planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
author shellac
date Sat, 02 May 2020 07:14:21 -0400
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Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 """Filename matching with shell patterns.
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2
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3 fnmatch(FILENAME, PATTERN) matches according to the local convention.
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4 fnmatchcase(FILENAME, PATTERN) always takes case in account.
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5
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6 The functions operate by translating the pattern into a regular
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7 expression. They cache the compiled regular expressions for speed.
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8
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9 The function translate(PATTERN) returns a regular expression
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10 corresponding to PATTERN. (It does not compile it.)
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11 """
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12 import os
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13 import re
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14 try:
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15 from functools import lru_cache
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16 except ImportError:
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17 from .compat import lru_cache
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18
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19 __all__ = ["filter", "fnmatch", "fnmatchcase", "translate"]
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20
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21
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22 def _norm_paths(path, norm_paths, sep):
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23 if norm_paths is None:
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24 path = re.sub(r'\/', sep or os.sep, path) # cached internally
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25 elif norm_paths:
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26 path = os.path.normcase(path)
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27 return path
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28
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29
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30 def fnmatch(name, pat, norm_paths=True, case_sensitive=True, sep=None):
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31 """Test whether FILENAME matches PATTERN.
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32
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33 Patterns are Unix shell style:
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34
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35 * matches everything
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36 ? matches any single character
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37 [seq] matches any character in seq
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38 [!seq] matches any char not in seq
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39
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40 An initial period in FILENAME is not special.
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41 Both FILENAME and PATTERN are first case-normalized
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42 if the operating system requires it.
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43 If you don't want this, use fnmatchcase(FILENAME, PATTERN).
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44
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45 :param slashes:
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46 :param norm_paths:
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47 A tri-state boolean:
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48 when true, invokes `os.path,.normcase()` on both paths,
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49 when `None`, just equalize slashes/backslashes to `os.sep`,
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50 when false, does not touch paths at all.
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51
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52 Note that a side-effect of `normcase()` on *Windows* is that
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53 it converts to lower-case all matches of `?glob()` functions.
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54 :param case_sensitive:
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55 defines the case-sensitiviness of regex doing the matches
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56 :param sep:
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57 in case only slahes replaced, what sep-char to substitute with;
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58 if false, `os.sep` is used.
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59
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60 Notice that by default, `normcase()` causes insensitive matching
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61 on *Windows*, regardless of `case_insensitive` param.
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62 Set ``norm_paths=None, case_sensitive=False`` to preserve
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63 verbatim mathces.
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64 """
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65 name, pat = [_norm_paths(p, norm_paths, sep)
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66 for p in (name, pat)]
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67
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68 return fnmatchcase(name, pat, case_sensitive=case_sensitive)
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69
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70
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71 @lru_cache(maxsize=256, typed=True)
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72 def _compile_pattern(pat, case_sensitive):
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73 if isinstance(pat, bytes):
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74 pat_str = pat.decode('ISO-8859-1')
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75 res_str = translate(pat_str)
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76 res = res_str.encode('ISO-8859-1')
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77 else:
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78 res = translate(pat)
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79 flags = 0 if case_sensitive else re.IGNORECASE
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80 return re.compile(res, flags).match
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81
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82
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83 def filter(names, pat, norm_paths=True, case_sensitive=True, sep=None):
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84 """Return the subset of the list NAMES that match PAT."""
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85 result = []
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86 pat = _norm_paths(pat, norm_paths, sep)
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87 match = _compile_pattern(pat, case_sensitive)
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88 for name in names:
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89 m = match(_norm_paths(name, norm_paths, sep))
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90 if m:
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91 result.append((name,
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92 tuple(_norm_paths(p, norm_paths, sep) for p in m.groups())))
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93 return result
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94
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95
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96 def fnmatchcase(name, pat, case_sensitive=True):
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97 """Test whether FILENAME matches PATTERN, including case.
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98
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99 This is a version of fnmatch() which doesn't case-normalize
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100 its arguments.
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101 """
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102 match = _compile_pattern(pat, case_sensitive)
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103 return match(name) is not None
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104
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105
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106 def translate(pat):
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107 """Translate a shell PATTERN to a regular expression.
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108
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109 There is no way to quote meta-characters.
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110 """
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111
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112 i, n = 0, len(pat)
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113 res = ''
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114 while i < n:
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115 c = pat[i]
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116 i = i+1
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117 if c == '*':
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118 res = res + '(.*)'
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119 elif c == '?':
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120 res = res + '(.)'
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121 elif c == '[':
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122 j = i
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123 if j < n and pat[j] == '!':
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124 j = j+1
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125 if j < n and pat[j] == ']':
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126 j = j+1
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127 while j < n and pat[j] != ']':
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128 j = j+1
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diff changeset
129 if j >= n:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
130 res = res + '\\['
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
131 else:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
132 stuff = pat[i:j].replace('\\','\\\\')
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
133 i = j+1
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
134 if stuff[0] == '!':
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
135 stuff = '^' + stuff[1:]
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
136 elif stuff[0] == '^':
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
137 stuff = '\\' + stuff
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
138 res = '%s([%s])' % (res, stuff)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
139 else:
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
140 res = res + re.escape(c)
26e78fe6e8c4 "planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
shellac
parents:
diff changeset
141 return '(?ms)' + res + '\Z'