Mercurial > hg
annotate hgext/convert/common.py @ 12777:a19db59e1de4
gendoc: add subsection for each command
author | Martin Geisler <mg@lazybytes.net> |
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date | Wed, 20 Oct 2010 18:08:37 +0200 |
parents | 33010ff1fd6f |
children | 7e525d2f9a75 |
rev | line source |
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1 # common.py - common code for the convert extension |
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2 # |
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3 # Copyright 2005-2009 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 base64, errno |
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9 import os |
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10 import cPickle as pickle |
8656 | 11 from mercurial import util |
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12 from mercurial.i18n import _ |
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13 |
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14 def encodeargs(args): |
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15 def encodearg(s): |
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16 lines = base64.encodestring(s) |
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17 lines = [l.splitlines()[0] for l in lines] |
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18 return ''.join(lines) |
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19 |
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20 s = pickle.dumps(args) |
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21 return encodearg(s) |
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22 |
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23 def decodeargs(s): |
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24 s = base64.decodestring(s) |
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25 return pickle.loads(s) |
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26 |
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27 class MissingTool(Exception): |
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28 pass |
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29 |
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30 def checktool(exe, name=None, abort=True): |
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31 name = name or exe |
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32 if not util.find_exe(exe): |
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33 exc = abort and util.Abort or MissingTool |
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34 raise exc(_('cannot find required "%s" tool') % name) |
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35 |
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36 class NoRepo(Exception): |
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37 pass |
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38 |
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39 SKIPREV = 'SKIP' |
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40 |
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41 class commit(object): |
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42 def __init__(self, author, date, desc, parents, branch=None, rev=None, |
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43 extra={}, sortkey=None): |
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44 self.author = author or 'unknown' |
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45 self.date = date or '0 0' |
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46 self.desc = desc |
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47 self.parents = parents |
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48 self.branch = branch |
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49 self.rev = rev |
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50 self.extra = extra |
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51 self.sortkey = sortkey |
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52 |
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53 class converter_source(object): |
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54 """Conversion source interface""" |
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55 |
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56 def __init__(self, ui, path=None, rev=None): |
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57 """Initialize conversion source (or raise NoRepo("message") |
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58 exception if path is not a valid repository)""" |
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59 self.ui = ui |
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60 self.path = path |
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61 self.rev = rev |
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62 |
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63 self.encoding = 'utf-8' |
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64 |
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65 def before(self): |
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66 pass |
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67 |
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68 def after(self): |
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69 pass |
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70 |
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71 def setrevmap(self, revmap): |
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72 """set the map of already-converted revisions""" |
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73 pass |
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74 |
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75 def getheads(self): |
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76 """Return a list of this repository's heads""" |
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77 raise NotImplementedError() |
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78 |
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79 def getfile(self, name, rev): |
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80 """Return a pair (data, mode) where data is the file content |
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81 as a string and mode one of '', 'x' or 'l'. rev is the |
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82 identifier returned by a previous call to getchanges(). Raise |
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83 IOError to indicate that name was deleted in rev. |
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84 """ |
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85 raise NotImplementedError() |
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86 |
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87 def getchanges(self, version): |
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88 """Returns a tuple of (files, copies). |
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89 |
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90 files is a sorted list of (filename, id) tuples for all files |
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91 changed between version and its first parent returned by |
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92 getcommit(). id is the source revision id of the file. |
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93 |
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94 copies is a dictionary of dest: source |
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95 """ |
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96 raise NotImplementedError() |
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97 |
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98 def getcommit(self, version): |
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99 """Return the commit object for version""" |
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100 raise NotImplementedError() |
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101 |
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102 def gettags(self): |
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103 """Return the tags as a dictionary of name: revision |
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104 |
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105 Tag names must be UTF-8 strings. |
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106 """ |
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107 raise NotImplementedError() |
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108 |
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109 def recode(self, s, encoding=None): |
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110 if not encoding: |
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111 encoding = self.encoding or 'utf-8' |
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112 |
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113 if isinstance(s, unicode): |
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114 return s.encode("utf-8") |
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115 try: |
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116 return s.decode(encoding).encode("utf-8") |
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117 except: |
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118 try: |
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119 return s.decode("latin-1").encode("utf-8") |
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120 except: |
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121 return s.decode(encoding, "replace").encode("utf-8") |
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122 |
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123 def getchangedfiles(self, rev, i): |
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124 """Return the files changed by rev compared to parent[i]. |
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125 |
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126 i is an index selecting one of the parents of rev. The return |
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127 value should be the list of files that are different in rev and |
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128 this parent. |
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129 |
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130 If rev has no parents, i is None. |
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131 |
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132 This function is only needed to support --filemap |
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133 """ |
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134 raise NotImplementedError() |
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135 |
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136 def converted(self, rev, sinkrev): |
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137 '''Notify the source that a revision has been converted.''' |
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138 pass |
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139 |
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140 def hasnativeorder(self): |
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141 """Return true if this source has a meaningful, native revision |
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142 order. For instance, Mercurial revisions are store sequentially |
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143 while there is no such global ordering with Darcs. |
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144 """ |
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145 return False |
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146 |
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147 def lookuprev(self, rev): |
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148 """If rev is a meaningful revision reference in source, return |
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149 the referenced identifier in the same format used by getcommit(). |
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150 return None otherwise. |
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151 """ |
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152 return None |
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153 |
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154 class converter_sink(object): |
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155 """Conversion sink (target) interface""" |
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156 |
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157 def __init__(self, ui, path): |
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158 """Initialize conversion sink (or raise NoRepo("message") |
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159 exception if path is not a valid repository) |
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160 |
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161 created is a list of paths to remove if a fatal error occurs |
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162 later""" |
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163 self.ui = ui |
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164 self.path = path |
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165 self.created = [] |
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166 |
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167 def getheads(self): |
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168 """Return a list of this repository's heads""" |
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169 raise NotImplementedError() |
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170 |
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171 def revmapfile(self): |
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172 """Path to a file that will contain lines |
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173 source_rev_id sink_rev_id |
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174 mapping equivalent revision identifiers for each system.""" |
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175 raise NotImplementedError() |
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176 |
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177 def authorfile(self): |
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178 """Path to a file that will contain lines |
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179 srcauthor=dstauthor |
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180 mapping equivalent authors identifiers for each system.""" |
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181 return None |
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182 |
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183 def putcommit(self, files, copies, parents, commit, source, revmap): |
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184 """Create a revision with all changed files listed in 'files' |
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185 and having listed parents. 'commit' is a commit object |
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186 containing at a minimum the author, date, and message for this |
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187 changeset. 'files' is a list of (path, version) tuples, |
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188 'copies' is a dictionary mapping destinations to sources, |
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189 'source' is the source repository, and 'revmap' is a mapfile |
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190 of source revisions to converted revisions. Only getfile() and |
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191 lookuprev() should be called on 'source'. |
6716
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192 |
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193 Note that the sink repository is not told to update itself to |
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194 a particular revision (or even what that revision would be) |
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195 before it receives the file data. |
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196 """ |
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197 raise NotImplementedError() |
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198 |
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199 def puttags(self, tags): |
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200 """Put tags into sink. |
8887
0332f8b44e54
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|
201 |
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202 tags: {tagname: sink_rev_id, ...} where tagname is an UTF-8 string. |
9431
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convert: fix history topology when using hg.tagsbranch
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203 Return a pair (tag_revision, tag_parent_revision), or (None, None) |
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204 if nothing was changed. |
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205 """ |
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206 raise NotImplementedError() |
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|
207 |
5934
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208 def setbranch(self, branch, pbranches): |
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209 """Set the current branch name. Called before the first putcommit |
5173
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convert: hg: optionally create branches as clones
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|
210 on the branch. |
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|
211 branch: branch name for subsequent commits |
5934
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212 pbranches: (converted parent revision, parent branch) tuples""" |
5173
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|
213 pass |
5378
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214 |
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215 def setfilemapmode(self, active): |
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216 """Tell the destination that we're using a filemap |
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217 |
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218 Some converter_sources (svn in particular) can claim that a file |
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219 was changed in a revision, even if there was no change. This method |
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220 tells the destination that we're using a filemap and that it should |
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221 filter empty revisions. |
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222 """ |
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223 pass |
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224 |
5512
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225 def before(self): |
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226 pass |
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227 |
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228 def after(self): |
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229 pass |
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230 |
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|
231 |
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|
232 class commandline(object): |
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233 def __init__(self, ui, command): |
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234 self.ui = ui |
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235 self.command = command |
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|
236 |
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237 def prerun(self): |
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|
238 pass |
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239 |
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240 def postrun(self): |
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241 pass |
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242 |
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243 def _cmdline(self, cmd, *args, **kwargs): |
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244 cmdline = [self.command, cmd] + list(args) |
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245 for k, v in kwargs.iteritems(): |
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246 if len(k) == 1: |
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247 cmdline.append('-' + k) |
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248 else: |
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249 cmdline.append('--' + k.replace('_', '-')) |
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250 try: |
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251 if len(k) == 1: |
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252 cmdline.append('' + v) |
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253 else: |
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254 cmdline[-1] += '=' + v |
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255 except TypeError: |
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256 pass |
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257 cmdline = [util.shellquote(arg) for arg in cmdline] |
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258 if not self.ui.debugflag: |
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259 cmdline += ['2>', util.nulldev] |
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260 cmdline += ['<', util.nulldev] |
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261 cmdline = ' '.join(cmdline) |
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262 return cmdline |
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263 |
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264 def _run(self, cmd, *args, **kwargs): |
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265 cmdline = self._cmdline(cmd, *args, **kwargs) |
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266 self.ui.debug('running: %s\n' % (cmdline,)) |
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267 self.prerun() |
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268 try: |
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269 return util.popen(cmdline) |
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270 finally: |
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271 self.postrun() |
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272 |
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273 def run(self, cmd, *args, **kwargs): |
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274 fp = self._run(cmd, *args, **kwargs) |
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275 output = fp.read() |
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276 self.ui.debug(output) |
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277 return output, fp.close() |
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278 |
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279 def runlines(self, cmd, *args, **kwargs): |
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280 fp = self._run(cmd, *args, **kwargs) |
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281 output = fp.readlines() |
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282 self.ui.debug(''.join(output)) |
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283 return output, fp.close() |
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284 |
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285 def checkexit(self, status, output=''): |
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286 if status: |
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287 if output: |
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288 self.ui.warn(_('%s error:\n') % self.command) |
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289 self.ui.warn(output) |
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290 msg = util.explain_exit(status)[0] |
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291 raise util.Abort('%s %s' % (self.command, msg)) |
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292 |
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293 def run0(self, cmd, *args, **kwargs): |
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294 output, status = self.run(cmd, *args, **kwargs) |
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295 self.checkexit(status, output) |
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296 return output |
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297 |
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298 def runlines0(self, cmd, *args, **kwargs): |
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299 output, status = self.runlines(cmd, *args, **kwargs) |
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300 self.checkexit(status, ''.join(output)) |
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301 return output |
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302 |
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303 def getargmax(self): |
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304 if '_argmax' in self.__dict__: |
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305 return self._argmax |
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306 |
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307 # POSIX requires at least 4096 bytes for ARG_MAX |
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308 self._argmax = 4096 |
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309 try: |
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310 self._argmax = os.sysconf("SC_ARG_MAX") |
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311 except: |
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312 pass |
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313 |
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314 # Windows shells impose their own limits on command line length, |
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315 # down to 2047 bytes for cmd.exe under Windows NT/2k and 2500 bytes |
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316 # for older 4nt.exe. See http://support.microsoft.com/kb/830473 for |
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317 # details about cmd.exe limitations. |
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318 |
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319 # Since ARG_MAX is for command line _and_ environment, lower our limit |
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320 # (and make happy Windows shells while doing this). |
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321 |
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322 self._argmax = self._argmax / 2 - 1 |
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323 return self._argmax |
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324 |
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325 def limit_arglist(self, arglist, cmd, *args, **kwargs): |
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326 limit = self.getargmax() - len(self._cmdline(cmd, *args, **kwargs)) |
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327 bytes = 0 |
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328 fl = [] |
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329 for fn in arglist: |
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330 b = len(fn) + 3 |
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331 if bytes + b < limit or len(fl) == 0: |
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332 fl.append(fn) |
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333 bytes += b |
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334 else: |
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335 yield fl |
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336 fl = [fn] |
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337 bytes = b |
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338 if fl: |
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339 yield fl |
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340 |
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341 def xargs(self, arglist, cmd, *args, **kwargs): |
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342 for l in self.limit_arglist(arglist, cmd, *args, **kwargs): |
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343 self.run0(cmd, *(list(args) + l), **kwargs) |
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344 |
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345 class mapfile(dict): |
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346 def __init__(self, ui, path): |
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347 super(mapfile, self).__init__() |
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348 self.ui = ui |
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349 self.path = path |
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350 self.fp = None |
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351 self.order = [] |
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352 self._read() |
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353 |
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354 def _read(self): |
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355 if not self.path: |
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356 return |
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357 try: |
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358 fp = open(self.path, 'r') |
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359 except IOError, err: |
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360 if err.errno != errno.ENOENT: |
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361 raise |
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362 return |
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363 for i, line in enumerate(fp): |
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364 try: |
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365 key, value = line.splitlines()[0].rsplit(' ', 1) |
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366 except ValueError: |
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367 raise util.Abort( |
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368 _('syntax error in %s(%d): key/value pair expected') |
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369 % (self.path, i + 1)) |
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370 if key not in self: |
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371 self.order.append(key) |
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372 super(mapfile, self).__setitem__(key, value) |
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373 fp.close() |
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374 |
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375 def __setitem__(self, key, value): |
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376 if self.fp is None: |
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377 try: |
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378 self.fp = open(self.path, 'a') |
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379 except IOError, err: |
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380 raise util.Abort(_('could not open map file %r: %s') % |
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381 (self.path, err.strerror)) |
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382 self.fp.write('%s %s\n' % (key, value)) |
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383 self.fp.flush() |
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384 super(mapfile, self).__setitem__(key, value) |
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385 |
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386 def close(self): |
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387 if self.fp: |
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388 self.fp.close() |
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389 self.fp = None |