Mercurial > hg
annotate mercurial/match.py @ 18829:8843182f3514
color: drop unnecessary global statement
author | Simon Heimberg <simohe@besonet.ch> |
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date | Thu, 21 Mar 2013 18:16:49 +0100 |
parents | 8728579f6bdc |
children | fcf08023c011 |
rev | line source |
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Generally replace "file name" with "filename" in help and comments.
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1 # match.py - filename matching |
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2 # |
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3 # Copyright 2008, 2009 Matt Mackall <mpm@selenic.com> and others |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 |
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8 import re |
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9 import scmutil, util, fileset |
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10 from i18n import _ |
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12 def _rematcher(pat): |
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13 m = util.compilere(pat) |
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14 try: |
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15 # slightly faster, provided by facebook's re2 bindings |
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16 return m.test_match |
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17 except AttributeError: |
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18 return m.match |
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19 |
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20 def _expandsets(pats, ctx): |
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21 '''convert set: patterns into a list of files in the given context''' |
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22 fset = set() |
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23 other = [] |
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24 |
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25 for kind, expr in pats: |
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26 if kind == 'set': |
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27 if not ctx: |
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28 raise util.Abort("fileset expression with no context") |
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29 s = fileset.getfileset(ctx, expr) |
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30 fset.update(s) |
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31 continue |
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32 other.append((kind, expr)) |
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33 return fset, other |
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34 |
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35 class match(object): |
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36 def __init__(self, root, cwd, patterns, include=[], exclude=[], |
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37 default='glob', exact=False, auditor=None, ctx=None): |
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38 """build an object to match a set of file patterns |
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39 |
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40 arguments: |
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41 root - the canonical root of the tree you're matching against |
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42 cwd - the current working directory, if relevant |
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43 patterns - patterns to find |
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44 include - patterns to include |
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45 exclude - patterns to exclude |
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46 default - if a pattern in names has no explicit type, assume this one |
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47 exact - patterns are actually literals |
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48 |
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49 a pattern is one of: |
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50 'glob:<glob>' - a glob relative to cwd |
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51 're:<regexp>' - a regular expression |
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52 'path:<path>' - a path relative to repository root |
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53 'relglob:<glob>' - an unrooted glob (*.c matches C files in all dirs) |
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54 'relpath:<path>' - a path relative to cwd |
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55 'relre:<regexp>' - a regexp that needn't match the start of a name |
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56 'set:<fileset>' - a fileset expression |
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57 '<something>' - a pattern of the specified default type |
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58 """ |
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59 |
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60 self._root = root |
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61 self._cwd = cwd |
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62 self._files = [] |
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63 self._anypats = bool(include or exclude) |
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64 self._ctx = ctx |
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65 self._always = False |
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66 |
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67 if include: |
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68 pats = _normalize(include, 'glob', root, cwd, auditor) |
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69 self.includepat, im = _buildmatch(ctx, pats, '(?:/|$)') |
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70 if exclude: |
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71 pats = _normalize(exclude, 'glob', root, cwd, auditor) |
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72 self.excludepat, em = _buildmatch(ctx, pats, '(?:/|$)') |
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73 if exact: |
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74 if isinstance(patterns, list): |
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75 self._files = patterns |
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76 else: |
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77 self._files = list(patterns) |
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78 pm = self.exact |
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79 elif patterns: |
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80 pats = _normalize(patterns, default, root, cwd, auditor) |
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81 self._files = _roots(pats) |
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82 self._anypats = self._anypats or _anypats(pats) |
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83 self.patternspat, pm = _buildmatch(ctx, pats, '$') |
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84 |
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85 if patterns or exact: |
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86 if include: |
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87 if exclude: |
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88 m = lambda f: im(f) and not em(f) and pm(f) |
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89 else: |
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90 m = lambda f: im(f) and pm(f) |
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91 else: |
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92 if exclude: |
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93 m = lambda f: not em(f) and pm(f) |
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94 else: |
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95 m = pm |
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96 else: |
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97 if include: |
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98 if exclude: |
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99 m = lambda f: im(f) and not em(f) |
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100 else: |
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101 m = im |
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102 else: |
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103 if exclude: |
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104 m = lambda f: not em(f) |
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105 else: |
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106 m = lambda f: True |
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107 self._always = True |
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108 |
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109 self.matchfn = m |
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110 self._fmap = set(self._files) |
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111 |
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112 def __call__(self, fn): |
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113 return self.matchfn(fn) |
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114 def __iter__(self): |
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115 for f in self._files: |
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116 yield f |
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117 def bad(self, f, msg): |
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118 '''callback for each explicit file that can't be |
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119 found/accessed, with an error message |
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120 ''' |
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121 pass |
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122 def dir(self, f): |
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123 pass |
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124 def missing(self, f): |
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125 pass |
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126 def exact(self, f): |
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127 return f in self._fmap |
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128 def rel(self, f): |
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129 return util.pathto(self._root, self._cwd, f) |
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130 def files(self): |
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131 return self._files |
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132 def anypats(self): |
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133 return self._anypats |
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134 def always(self): |
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135 return self._always |
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137 class exact(match): |
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138 def __init__(self, root, cwd, files): |
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139 match.__init__(self, root, cwd, files, exact = True) |
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140 |
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141 class always(match): |
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142 def __init__(self, root, cwd): |
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143 match.__init__(self, root, cwd, []) |
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144 self._always = True |
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145 |
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146 class narrowmatcher(match): |
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147 """Adapt a matcher to work on a subdirectory only. |
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148 |
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149 The paths are remapped to remove/insert the path as needed: |
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150 |
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151 >>> m1 = match('root', '', ['a.txt', 'sub/b.txt']) |
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152 >>> m2 = narrowmatcher('sub', m1) |
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153 >>> bool(m2('a.txt')) |
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154 False |
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155 >>> bool(m2('b.txt')) |
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156 True |
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157 >>> bool(m2.matchfn('a.txt')) |
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158 False |
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159 >>> bool(m2.matchfn('b.txt')) |
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160 True |
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161 >>> m2.files() |
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162 ['b.txt'] |
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163 >>> m2.exact('b.txt') |
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164 True |
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165 >>> m2.rel('b.txt') |
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166 'b.txt' |
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167 >>> def bad(f, msg): |
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168 ... print "%s: %s" % (f, msg) |
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169 >>> m1.bad = bad |
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170 >>> m2.bad('x.txt', 'No such file') |
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171 sub/x.txt: No such file |
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172 """ |
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173 |
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174 def __init__(self, path, matcher): |
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175 self._root = matcher._root |
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176 self._cwd = matcher._cwd |
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177 self._path = path |
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178 self._matcher = matcher |
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179 self._always = matcher._always |
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180 |
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181 self._files = [f[len(path) + 1:] for f in matcher._files |
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182 if f.startswith(path + "/")] |
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183 self._anypats = matcher._anypats |
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184 self.matchfn = lambda fn: matcher.matchfn(self._path + "/" + fn) |
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185 self._fmap = set(self._files) |
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186 |
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187 def bad(self, f, msg): |
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188 self._matcher.bad(self._path + "/" + f, msg) |
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189 |
8568 | 190 def patkind(pat): |
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191 return _patsplit(pat, None)[0] |
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192 |
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193 def _patsplit(pat, default): |
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194 """Split a string into an optional pattern kind prefix and the |
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195 actual pattern.""" |
8579 | 196 if ':' in pat: |
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197 kind, val = pat.split(':', 1) |
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198 if kind in ('re', 'glob', 'path', 'relglob', 'relpath', 'relre', |
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199 'listfile', 'listfile0', 'set'): |
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200 return kind, val |
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201 return default, pat |
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202 |
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|
203 def _globre(pat): |
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204 "convert a glob pattern into a regexp" |
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205 i, n = 0, len(pat) |
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206 res = '' |
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207 group = 0 |
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|
208 escape = re.escape |
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|
209 def peek(): |
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210 return i < n and pat[i] |
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211 while i < n: |
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212 c = pat[i] |
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213 i += 1 |
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214 if c not in '*?[{},\\': |
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215 res += escape(c) |
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216 elif c == '*': |
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217 if peek() == '*': |
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218 i += 1 |
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219 res += '.*' |
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220 else: |
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221 res += '[^/]*' |
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222 elif c == '?': |
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223 res += '.' |
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224 elif c == '[': |
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225 j = i |
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226 if j < n and pat[j] in '!]': |
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227 j += 1 |
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228 while j < n and pat[j] != ']': |
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229 j += 1 |
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230 if j >= n: |
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231 res += '\\[' |
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232 else: |
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233 stuff = pat[i:j].replace('\\','\\\\') |
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234 i = j + 1 |
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235 if stuff[0] == '!': |
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236 stuff = '^' + stuff[1:] |
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237 elif stuff[0] == '^': |
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238 stuff = '\\' + stuff |
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239 res = '%s[%s]' % (res, stuff) |
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240 elif c == '{': |
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241 group += 1 |
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242 res += '(?:' |
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243 elif c == '}' and group: |
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244 res += ')' |
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245 group -= 1 |
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246 elif c == ',' and group: |
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247 res += '|' |
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248 elif c == '\\': |
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249 p = peek() |
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250 if p: |
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251 i += 1 |
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252 res += escape(p) |
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253 else: |
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254 res += escape(c) |
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255 else: |
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256 res += escape(c) |
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257 return res |
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258 |
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259 def _regex(kind, name, tail): |
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260 '''convert a pattern into a regular expression''' |
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261 if not name: |
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262 return '' |
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263 if kind == 're': |
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264 return name |
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265 elif kind == 'path': |
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266 return '^' + re.escape(name) + '(?:/|$)' |
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267 elif kind == 'relglob': |
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268 return '(?:|.*/)' + _globre(name) + tail |
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269 elif kind == 'relpath': |
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270 return re.escape(name) + '(?:/|$)' |
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271 elif kind == 'relre': |
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272 if name.startswith('^'): |
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273 return name |
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274 return '.*' + name |
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275 return _globre(name) + tail |
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276 |
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277 def _buildmatch(ctx, pats, tail): |
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278 fset, pats = _expandsets(pats, ctx) |
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279 if not pats: |
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280 return "", fset.__contains__ |
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281 |
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282 pat, mf = _buildregexmatch(pats, tail) |
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283 if fset: |
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284 return pat, lambda f: f in fset or mf(f) |
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285 return pat, mf |
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286 |
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287 def _buildregexmatch(pats, tail): |
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288 """build a matching function from a set of patterns""" |
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289 try: |
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290 pat = '(?:%s)' % '|'.join([_regex(k, p, tail) for (k, p) in pats]) |
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291 if len(pat) > 20000: |
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cleanup: "raise SomeException()" -> "raise SomeException"
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292 raise OverflowError |
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293 return pat, _rematcher(pat) |
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294 except OverflowError: |
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295 # We're using a Python with a tiny regex engine and we |
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296 # made it explode, so we'll divide the pattern list in two |
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297 # until it works |
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298 l = len(pats) |
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299 if l < 2: |
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300 raise |
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301 pata, a = _buildregexmatch(pats[:l//2], tail) |
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302 patb, b = _buildregexmatch(pats[l//2:], tail) |
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add debugignore which yields the combined ignore patten of the .hgignore files
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303 return pat, lambda s: a(s) or b(s) |
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304 except re.error: |
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305 for k, p in pats: |
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306 try: |
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307 _rematcher('(?:%s)' % _regex(k, p, tail)) |
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308 except re.error: |
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match: mark error messages for translation
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diff
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309 raise util.Abort(_("invalid pattern (%s): %s") % (k, p)) |
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310 raise util.Abort(_("invalid pattern")) |
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311 |
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diff
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|
312 def _normalize(names, default, root, cwd, auditor): |
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313 pats = [] |
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314 for kind, name in [_patsplit(p, default) for p in names]: |
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315 if kind in ('glob', 'relpath'): |
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bfeaa88b875d
move canonpath from util to scmutil
Adrian Buehlmann <adrian@cadifra.com>
parents:
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diff
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316 name = scmutil.canonpath(root, cwd, name, auditor) |
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317 elif kind in ('relglob', 'path'): |
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318 name = util.normpath(name) |
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319 elif kind in ('listfile', 'listfile0'): |
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320 try: |
14248
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match: make 'listfile:' split on LF and CRLF
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diff
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|
321 files = util.readfile(name) |
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322 if kind == 'listfile0': |
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|
323 files = files.split('\0') |
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|
324 else: |
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|
325 files = files.splitlines() |
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326 files = [f for f in files if f] |
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|
327 except EnvironmentError: |
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328 raise util.Abort(_("unable to read file list (%s)") % name) |
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329 pats += _normalize(files, default, root, cwd, auditor) |
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330 continue |
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331 |
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332 pats.append((kind, name)) |
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333 return pats |
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334 |
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335 def _roots(patterns): |
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336 r = [] |
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337 for kind, name in patterns: |
8584
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match: fold _globprefix into _roots
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338 if kind == 'glob': # find the non-glob prefix |
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339 root = [] |
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340 for p in name.split('/'): |
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341 if '[' in p or '{' in p or '*' in p or '?' in p: |
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342 break |
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match: fold _globprefix into _roots
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343 root.append(p) |
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344 r.append('/'.join(root) or '.') |
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345 elif kind in ('relpath', 'path'): |
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346 r.append(name or '.') |
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347 elif kind == 'relglob': |
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348 r.append('.') |
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|
349 return r |
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350 |
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351 def _anypats(patterns): |
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|
352 for kind, name in patterns: |
16182
bd12ef347680
match: consider filesets as "anypats"
Patrick Mezard <patrick@mezard.eu>
parents:
15029
diff
changeset
|
353 if kind in ('glob', 're', 'relglob', 'relre', 'set'): |
8576
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354 return True |