Mercurial > hg
annotate mercurial/pathutil.py @ 26390:0f0cda81e9b0
gitweb: provide links to branches, tags and bookmarks by name
This is adapted from cd842821db2c, that was added to paper for 3.5 release.
It adds another way to refer to branches, tags and bookmarks in urls: by name.
It's still possible to navigate to a specific changeset hash, but now you can
get more descriptive urls straight from /summary page, for example.
branchentry template (and so the whole branches table on /summary and
/branches) lost the column that had a plain changeset hash, because tags and
bookmarks don't have this column and also because there is already a way to
address branch by its changeset hash (changeset link just next to it). Maybe we
can instead bring this column with a plain changeset hash to tags and
bookmarks, but this, more terse, new look feels fine.
author | Anton Shestakov <av6@dwimlabs.net> |
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date | Sat, 26 Sep 2015 17:15:58 +0800 |
parents | d740df4e96cf |
children | 56b2bcea2529 |
rev | line source |
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1 from __future__ import absolute_import |
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2 |
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3 import errno |
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4 import os |
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5 import posixpath |
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6 import stat |
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7 |
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8 from .i18n import _ |
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9 from . import ( |
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10 encoding, |
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11 util, |
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12 ) |
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13 |
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14 def _lowerclean(s): |
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15 return encoding.hfsignoreclean(s.lower()) |
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16 |
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17 class pathauditor(object): |
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18 '''ensure that a filesystem path contains no banned components. |
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19 the following properties of a path are checked: |
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20 |
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21 - ends with a directory separator |
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22 - under top-level .hg |
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23 - starts at the root of a windows drive |
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24 - contains ".." |
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25 - traverses a symlink (e.g. a/symlink_here/b) |
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26 - inside a nested repository (a callback can be used to approve |
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27 some nested repositories, e.g., subrepositories) |
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28 ''' |
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29 |
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30 def __init__(self, root, callback=None): |
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31 self.audited = set() |
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32 self.auditeddir = set() |
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33 self.root = root |
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34 self.callback = callback |
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35 if os.path.lexists(root) and not util.checkcase(root): |
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36 self.normcase = util.normcase |
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37 else: |
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38 self.normcase = lambda x: x |
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39 |
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40 def __call__(self, path): |
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41 '''Check the relative path. |
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42 path may contain a pattern (e.g. foodir/**.txt)''' |
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43 |
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44 path = util.localpath(path) |
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45 normpath = self.normcase(path) |
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46 if normpath in self.audited: |
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47 return |
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48 # AIX ignores "/" at end of path, others raise EISDIR. |
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49 if util.endswithsep(path): |
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50 raise util.Abort(_("path ends in directory separator: %s") % path) |
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51 parts = util.splitpath(path) |
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52 if (os.path.splitdrive(path)[0] |
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53 or _lowerclean(parts[0]) in ('.hg', '.hg.', '') |
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54 or os.pardir in parts): |
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55 raise util.Abort(_("path contains illegal component: %s") % path) |
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56 # Windows shortname aliases |
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57 for p in parts: |
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58 if "~" in p: |
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59 first, last = p.split("~", 1) |
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60 if last.isdigit() and first.upper() in ["HG", "HG8B6C"]: |
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61 raise util.Abort(_("path contains illegal component: %s") |
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62 % path) |
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63 if '.hg' in _lowerclean(path): |
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64 lparts = [_lowerclean(p.lower()) for p in parts] |
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65 for p in '.hg', '.hg.': |
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66 if p in lparts[1:]: |
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67 pos = lparts.index(p) |
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68 base = os.path.join(*parts[:pos]) |
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69 raise util.Abort(_("path '%s' is inside nested repo %r") |
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70 % (path, base)) |
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71 |
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72 normparts = util.splitpath(normpath) |
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73 assert len(parts) == len(normparts) |
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74 |
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75 parts.pop() |
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76 normparts.pop() |
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77 prefixes = [] |
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78 while parts: |
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79 prefix = os.sep.join(parts) |
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80 normprefix = os.sep.join(normparts) |
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81 if normprefix in self.auditeddir: |
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82 break |
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83 curpath = os.path.join(self.root, prefix) |
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84 try: |
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85 st = os.lstat(curpath) |
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86 except OSError as err: |
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87 # EINVAL can be raised as invalid path syntax under win32. |
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88 # They must be ignored for patterns can be checked too. |
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89 if err.errno not in (errno.ENOENT, errno.ENOTDIR, errno.EINVAL): |
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90 raise |
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91 else: |
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92 if stat.S_ISLNK(st.st_mode): |
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93 raise util.Abort( |
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94 _('path %r traverses symbolic link %r') |
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95 % (path, prefix)) |
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96 elif (stat.S_ISDIR(st.st_mode) and |
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97 os.path.isdir(os.path.join(curpath, '.hg'))): |
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98 if not self.callback or not self.callback(curpath): |
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99 raise util.Abort(_("path '%s' is inside nested " |
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100 "repo %r") |
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101 % (path, prefix)) |
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102 prefixes.append(normprefix) |
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103 parts.pop() |
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104 normparts.pop() |
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105 |
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106 self.audited.add(normpath) |
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107 # only add prefixes to the cache after checking everything: we don't |
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108 # want to add "foo/bar/baz" before checking if there's a "foo/.hg" |
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109 self.auditeddir.update(prefixes) |
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110 |
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111 def check(self, path): |
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112 try: |
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113 self(path) |
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114 return True |
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115 except (OSError, util.Abort): |
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116 return False |
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117 |
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118 def canonpath(root, cwd, myname, auditor=None): |
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119 '''return the canonical path of myname, given cwd and root''' |
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120 if util.endswithsep(root): |
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121 rootsep = root |
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122 else: |
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123 rootsep = root + os.sep |
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124 name = myname |
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125 if not os.path.isabs(name): |
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126 name = os.path.join(root, cwd, name) |
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127 name = os.path.normpath(name) |
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128 if auditor is None: |
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129 auditor = pathauditor(root) |
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130 if name != rootsep and name.startswith(rootsep): |
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131 name = name[len(rootsep):] |
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132 auditor(name) |
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133 return util.pconvert(name) |
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134 elif name == root: |
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135 return '' |
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136 else: |
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137 # Determine whether `name' is in the hierarchy at or beneath `root', |
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138 # by iterating name=dirname(name) until that causes no change (can't |
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139 # check name == '/', because that doesn't work on windows). The list |
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140 # `rel' holds the reversed list of components making up the relative |
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141 # file name we want. |
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142 rel = [] |
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143 while True: |
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144 try: |
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145 s = util.samefile(name, root) |
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146 except OSError: |
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147 s = False |
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148 if s: |
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149 if not rel: |
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150 # name was actually the same as root (maybe a symlink) |
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151 return '' |
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152 rel.reverse() |
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153 name = os.path.join(*rel) |
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154 auditor(name) |
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155 return util.pconvert(name) |
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156 dirname, basename = util.split(name) |
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157 rel.append(basename) |
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158 if dirname == name: |
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159 break |
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160 name = dirname |
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161 |
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162 # A common mistake is to use -R, but specify a file relative to the repo |
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163 # instead of cwd. Detect that case, and provide a hint to the user. |
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164 hint = None |
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165 try: |
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166 if cwd != root: |
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167 canonpath(root, root, myname, auditor) |
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168 hint = (_("consider using '--cwd %s'") |
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169 % os.path.relpath(root, cwd)) |
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170 except util.Abort: |
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171 pass |
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172 |
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173 raise util.Abort(_("%s not under root '%s'") % (myname, root), |
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174 hint=hint) |
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175 |
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176 def normasprefix(path): |
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177 '''normalize the specified path as path prefix |
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178 |
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179 Returned value can be used safely for "p.startswith(prefix)", |
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180 "p[len(prefix):]", and so on. |
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181 |
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182 For efficiency, this expects "path" argument to be already |
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183 normalized by "os.path.normpath", "os.path.realpath", and so on. |
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184 |
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185 See also issue3033 for detail about need of this function. |
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186 |
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187 >>> normasprefix('/foo/bar').replace(os.sep, '/') |
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188 '/foo/bar/' |
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189 >>> normasprefix('/').replace(os.sep, '/') |
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190 '/' |
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191 ''' |
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192 d, p = os.path.splitdrive(path) |
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193 if len(p) != len(os.sep): |
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194 return path + os.sep |
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195 else: |
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196 return path |
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197 |
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198 # forward two methods from posixpath that do what we need, but we'd |
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199 # rather not let our internals know that we're thinking in posix terms |
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200 # - instead we'll let them be oblivious. |
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201 join = posixpath.join |
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202 dirname = posixpath.dirname |