Mercurial > public > mercurial-scm > hg-stable

annotate mercurial/context.py @ 3241:a184cd0c2db9

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Merge with upstream
author Brendan Cully <brendan@kublai.com>
date Tue, 03 Oct 2006 12:14:33 -0700
parents f7a8228fde17 8d4855fd9d7b
children 1539f788e913
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1 # context.py - changeset and file context objects for mercurial
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2 #
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3 # Copyright 2006 Matt Mackall <mpm@selenic.com>
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4 #
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5 # This software may be used and distributed according to the terms
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6 # of the GNU General Public License, incorporated herein by reference.
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7
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8 from node import *
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9 from i18n import gettext as _
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10 from demandload import demandload
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11 demandload(globals(), "ancestor bdiff repo revlog util")
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12
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13 class changectx(object):
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14 """A changecontext object makes access to data related to a particular
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15 changeset convenient."""
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16 def __init__(self, repo, changeid=None):
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17 """changeid is a revision number, node, or tag"""
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18 self._repo = repo
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19
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20 if not changeid and changeid != 0:
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21 p1, p2 = self._repo.dirstate.parents()
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22 self._rev = self._repo.changelog.rev(p1)
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23 if self._rev == -1:
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24 changeid = 'tip'
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25 else:
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26 self._node = p1
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27 return
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28
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29 self._node = self._repo.lookup(changeid)
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30 self._rev = self._repo.changelog.rev(self._node)
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31
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32 def __str__(self):
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33 return short(self.node())
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34
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35 def __repr__(self):
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36 return "<changectx %s>" % str(self)
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37
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38 def __eq__(self, other):
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39 return self._rev == other._rev
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40
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41 def __nonzero__(self):
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42 return self._rev != -1
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43
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44 def __getattr__(self, name):
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45 if name == '_changeset':
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46 self._changeset = self._repo.changelog.read(self.node())
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47 return self._changeset
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48 elif name == '_manifest':
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49 self._manifest = self._repo.manifest.read(self._changeset[0])
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50 return self._manifest
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51 else:
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52 raise AttributeError, name
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53
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54 def changeset(self): return self._changeset
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55 def manifest(self): return self._manifest
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56
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57 def rev(self): return self._rev
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58 def node(self): return self._node
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59 def user(self): return self._changeset[1]
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60 def date(self): return self._changeset[2]
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61 def files(self): return self._changeset[3]
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62 def description(self): return self._changeset[4]
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63
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64 def parents(self):
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65 """return contexts for each parent changeset"""
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66 p = self._repo.changelog.parents(self._node)
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67 return [ changectx(self._repo, x) for x in p ]
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68
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69 def children(self):
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70 """return contexts for each child changeset"""
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71 c = self._repo.changelog.children(self._node)
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72 return [ changectx(self._repo, x) for x in c ]
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73
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74 def filenode(self, path):
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75 if hasattr(self, "_manifest"):
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76 return self._manifest[path]
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77 node, flag = self._repo.manifest.find(self._changeset[0], path)
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78 return node
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79
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80 def filectx(self, path, fileid=None):
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81 """get a file context from this changeset"""
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82 if fileid is None:
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83 fileid = self.filenode(path)
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84 return filectx(self._repo, path, fileid=fileid, changectx=self)
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85
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86 def filectxs(self):
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87 """generate a file context for each file in this changeset's
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88 manifest"""
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89 mf = self.manifest()
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90 m = mf.keys()
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91 m.sort()
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92 for f in m:
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93 yield self.filectx(f, fileid=mf[f])
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94
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95 def ancestor(self, c2):
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96 """
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97 return the ancestor context of self and c2
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98 """
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99 n = self._repo.changelog.ancestor(self._node, c2._node)
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100 return changectx(self._repo, n)
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101
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102 class filectx(object):
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103 """A filecontext object makes access to data related to a particular
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104 filerevision convenient."""
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105 def __init__(self, repo, path, changeid=None, fileid=None,
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106 filelog=None, changectx=None):
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107 """changeid can be a changeset revision, node, or tag.
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108 fileid can be a file revision or node."""
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109 self._repo = repo
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110 self._path = path
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111
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112 assert changeid is not None or fileid is not None
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113
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114 if filelog:
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115 self._filelog = filelog
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116 if changectx:
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117 self._changectx = changectx
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118 self._changeid = changectx.node()
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119
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120 if fileid is None:
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121 self._changeid = changeid
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122 else:
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123 self._fileid = fileid
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124
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125 def __getattr__(self, name):
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126 if name == '_changectx':
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127 self._changectx = changectx(self._repo, self._changeid)
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128 return self._changectx
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129 elif name == '_filelog':
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130 self._filelog = self._repo.file(self._path)
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131 return self._filelog
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132 elif name == '_changeid':
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133 self._changeid = self._filelog.linkrev(self._filenode)
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134 return self._changeid
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135 elif name == '_filenode':
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136 try:
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137 if hasattr(self, "_fileid"):
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138 self._filenode = self._filelog.lookup(self._fileid)
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139 else:
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140 self._filenode = self._changectx.filenode(self._path)
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141 except revlog.RevlogError, inst:
a184cd0c2db9 Merge with upstream
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diff changeset
142 raise repo.LookupError(str(inst))
3144
8342ad5abe0b Make filectx lazier - some users never use filenode
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diff changeset
143 return self._filenode
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diff changeset
144 elif name == '_filerev':
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diff changeset
145 self._filerev = self._filelog.rev(self._filenode)
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diff changeset
146 return self._filerev
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diff changeset
147 else:
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diff changeset
148 raise AttributeError, name
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149
3168
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150 def __nonzero__(self):
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diff changeset
151 return self._filerev != nullid
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152
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diff changeset
153 def __str__(self):
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diff changeset
154 return "%s@%s" % (self.path(), short(self.node()))
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155
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156 def __repr__(self):
3216
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157 return "<filectx %s>" % str(self)
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diff changeset
158
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diff changeset
159 def __eq__(self, other):
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160 return self._path == other._path and self._changeid == other._changeid
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161
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162 def filectx(self, fileid):
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163 '''opens an arbitrary revision of the file without
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164 opening a new filelog'''
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diff changeset
165 return filectx(self._repo, self._path, fileid=fileid,
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166 filelog=self._filelog)
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167
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168 def filerev(self): return self._filerev
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169 def filenode(self): return self._filenode
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170 def filelog(self): return self._filelog
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171
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172 def rev(self):
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173 if hasattr(self, "_changectx"):
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174 return self._changectx.rev()
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175 return self._filelog.linkrev(self._filenode)
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176
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177 def node(self): return self._changectx.node()
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178 def user(self): return self._changectx.user()
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179 def date(self): return self._changectx.date()
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180 def files(self): return self._changectx.files()
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181 def description(self): return self._changectx.description()
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182 def manifest(self): return self._changectx.manifest()
3149
ff1ab08e6732 restore filectx.changectx() method
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diff changeset
183 def changectx(self): return self._changectx
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184
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185 def data(self): return self._filelog.read(self._filenode)
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186 def renamed(self): return self._filelog.renamed(self._filenode)
3122
da85145d4571 filectx: add rename traversal for parents()
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187 def path(self): return self._path
2563
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188
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189 def parents(self):
3124
4d021b91cb26 filectx: allow passing filelog in init to avoid opening new filelogs
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190 p = self._path
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191 fl = self._filelog
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diff changeset
192 pl = [ (p, n, fl) for n in self._filelog.parents(self._filenode) ]
3123
4ea58eb3f0c9 filelog: make metadata method private
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diff changeset
193
3124
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194 r = self.renamed()
3122
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195 if r:
3124
4d021b91cb26 filectx: allow passing filelog in init to avoid opening new filelogs
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diff changeset
196 pl[0] = (r[0], r[1], None)
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diff changeset
197
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diff changeset
198 return [ filectx(self._repo, p, fileid=n, filelog=l)
4d021b91cb26 filectx: allow passing filelog in init to avoid opening new filelogs
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diff changeset
199 for p,n,l in pl if n != nullid ]
2563
482c524dd9ab Add context.py: changeset and file revision contexts
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diff changeset
200
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diff changeset
201 def children(self):
482c524dd9ab Add context.py: changeset and file revision contexts
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diff changeset
202 # hard for renames
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203 c = self._filelog.children(self._filenode)
3124
4d021b91cb26 filectx: allow passing filelog in init to avoid opening new filelogs
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diff changeset
204 return [ filectx(self._repo, self._path, fileid=x,
4d021b91cb26 filectx: allow passing filelog in init to avoid opening new filelogs
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205 filelog=self._filelog) for x in c ]
2566
d8560b458f76 Convert hg annotate to context api
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diff changeset
206
3172
5c93dd0ae413 Refactor annotate copy support.
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diff changeset
207 def annotate(self, follow=False):
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diff changeset
208 '''returns a list of tuples of (ctx, line) for each line
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diff changeset
209 in the file, where ctx is the filectx of the node where
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diff changeset
210 that line was last changed'''
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diff changeset
211
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diff changeset
212 def decorate(text, rev):
5c93dd0ae413 Refactor annotate copy support.
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diff changeset
213 return ([rev] * len(text.splitlines()), text)
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diff changeset
214
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diff changeset
215 def pair(parent, child):
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diff changeset
216 for a1, a2, b1, b2 in bdiff.blocks(parent[1], child[1]):
5c93dd0ae413 Refactor annotate copy support.
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diff changeset
217 child[0][b1:b2] = parent[0][a1:a2]
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diff changeset
218 return child
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diff changeset
219
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diff changeset
220 getlog = util.cachefunc(lambda x: self._repo.file(x))
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diff changeset
221 def getctx(path, fileid):
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diff changeset
222 log = path == self._path and self._filelog or getlog(path)
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diff changeset
223 return filectx(self._repo, path, fileid=fileid, filelog=log)
5c93dd0ae413 Refactor annotate copy support.
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diff changeset
224 getctx = util.cachefunc(getctx)
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diff changeset
225
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diff changeset
226 def parents(f):
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diff changeset
227 # we want to reuse filectx objects as much as possible
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diff changeset
228 p = f._path
3217
6d98149d70fe contexts: add working dir and working file contexts
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diff changeset
229 if f._filerev is None: # working dir
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diff changeset
230 pl = [ (n.path(), n.filerev()) for n in f.parents() ]
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diff changeset
231 else:
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diff changeset
232 pl = [ (p, n) for n in f._filelog.parentrevs(f._filerev) ]
3172
5c93dd0ae413 Refactor annotate copy support.
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diff changeset
233
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diff changeset
234 if follow:
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diff changeset
235 r = f.renamed()
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diff changeset
236 if r:
5c93dd0ae413 Refactor annotate copy support.
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diff changeset
237 pl[0] = (r[0], getlog(r[0]).rev(r[1]))
3146
e69a0cbe268e filectx.annotate: return filectx for each line instead of rev
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diff changeset
238
3172
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diff changeset
239 return [ getctx(p, n) for p, n in pl if n != -1 ]
3217
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240
3172
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diff changeset
241 # find all ancestors
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diff changeset
242 needed = {self: 1}
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diff changeset
243 visit = [self]
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diff changeset
244 files = [self._path]
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diff changeset
245 while visit:
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diff changeset
246 f = visit.pop(0)
5c93dd0ae413 Refactor annotate copy support.
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diff changeset
247 for p in parents(f):
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diff changeset
248 if p not in needed:
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diff changeset
249 needed[p] = 1
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diff changeset
250 visit.append(p)
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diff changeset
251 if p._path not in files:
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diff changeset
252 files.append(p._path)
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253 else:
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diff changeset
254 # count how many times we'll use this
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diff changeset
255 needed[p] += 1
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diff changeset
256
5c93dd0ae413 Refactor annotate copy support.
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diff changeset
257 # sort by revision (per file) which is a topological order
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diff changeset
258 visit = []
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diff changeset
259 files.reverse()
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diff changeset
260 for f in files:
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diff changeset
261 fn = [(n._filerev, n) for n in needed.keys() if n._path == f]
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diff changeset
262 fn.sort()
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diff changeset
263 visit.extend(fn)
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diff changeset
264 hist = {}
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diff changeset
265
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diff changeset
266 for r, f in visit:
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diff changeset
267 curr = decorate(f.data(), f)
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diff changeset
268 for p in parents(f):
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diff changeset
269 if p != nullid:
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diff changeset
270 curr = pair(hist[p], curr)
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diff changeset
271 # trim the history of unneeded revs
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diff changeset
272 needed[p] -= 1
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diff changeset
273 if not needed[p]:
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diff changeset
274 del hist[p]
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diff changeset
275 hist[f] = curr
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diff changeset
276
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diff changeset
277 return zip(hist[f][0], hist[f][1].splitlines(1))
3124
4d021b91cb26 filectx: allow passing filelog in init to avoid opening new filelogs
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diff changeset
278
3126
4bf2e895cf86 filectx: add rename-aware ancestor algorithm
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diff changeset
279 def ancestor(self, fc2):
4bf2e895cf86 filectx: add rename-aware ancestor algorithm
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diff changeset
280 """
4bf2e895cf86 filectx: add rename-aware ancestor algorithm
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diff changeset
281 find the common ancestor file context, if any, of self, and fc2
4bf2e895cf86 filectx: add rename-aware ancestor algorithm
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diff changeset
282 """
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diff changeset
283
3135
b1db258e875c Abstract ancestor algorithm into generic function
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diff changeset
284 acache = {}
3217
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diff changeset
285
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diff changeset
286 # prime the ancestor cache for the working directory
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diff changeset
287 for c in (self, fc2):
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288 if c._filerev == None:
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289 pl = [ (n.path(), n.filenode()) for n in c.parents() ]
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290 acache[(c._path, None)] = pl
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291
3126
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292 flcache = {self._path:self._filelog, fc2._path:fc2._filelog}
3135
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293 def parents(vertex):
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294 if vertex in acache:
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295 return acache[vertex]
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296 f, n = vertex
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297 if f not in flcache:
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298 flcache[f] = self._repo.file(f)
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299 fl = flcache[f]
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300 pl = [ (f,p) for p in fl.parents(n) if p != nullid ]
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301 re = fl.renamed(n)
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302 if re:
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303 pl.append(re)
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304 acache[vertex]=pl
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305 return pl
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306
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307 a, b = (self._path, self._filenode), (fc2._path, fc2._filenode)
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308 v = ancestor.ancestor(a, b, parents)
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309 if v:
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310 f,n = v
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diff changeset
311 return filectx(self._repo, f, fileid=n, filelog=flcache[f])
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312
3135
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313 return None
3217
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314
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315 class workingctx(changectx):
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316 """A workingctx object makes access to data related to
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317 the current working directory convenient."""
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318 def __init__(self, repo):
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319 self._repo = repo
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320 self._rev = None
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321 self._node = None
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322
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323 def __str__(self):
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324 return "."
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325
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326 def __nonzero__(self):
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327 return True
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328
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329 def __getattr__(self, name):
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330 if name == '_parents':
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331 self._parents = self._repo.parents()
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332 return self._parents
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333 if name == '_status':
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334 self._status = self._repo.status()
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335 return self._status
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336 if name == '_manifest':
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337 self._buildmanifest()
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338 return self._manifest
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339 else:
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340 raise AttributeError, name
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341
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342 def _buildmanifest(self):
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343 """generate a manifest corresponding to the working directory"""
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344
3218
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345 man = self._parents[0].manifest().copy()
3217
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346 copied = self._repo.dirstate.copies()
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347 modified, added, removed, deleted, unknown = self._status[:5]
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diff changeset
348 for i,l in (("a", added), ("m", modified), ("u", unknown)):
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349 for f in l:
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diff changeset
350 man[f] = man.get(copied.get(f, f), nullid) + i
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351 man.set(f, util.is_exec(self._repo.wjoin(f), man.execf(f)))
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352
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diff changeset
353 for f in deleted + removed:
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diff changeset
354 del man[f]
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355
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diff changeset
356 self._manifest = man
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357
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358 def manifest(self): return self._manifest
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359
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360 def user(self): return self._repo.ui.username()
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diff changeset
361 def date(self): return util.makedate()
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362 def description(self): return ""
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363 def files(self):
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364 f = self.modified() + self.added() + self.removed()
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diff changeset
365 f.sort()
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diff changeset
366 return f
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diff changeset
367
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diff changeset
368 def modified(self): return self._status[0]
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369 def added(self): return self._status[1]
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370 def removed(self): return self._status[2]
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371 def deleted(self): return self._status[3]
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diff changeset
372 def unknown(self): return self._status[4]
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373 def clean(self): return self._status[5]
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374
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375 def parents(self):
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diff changeset
376 """return contexts for each parent changeset"""
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diff changeset
377 return self._parents
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diff changeset
378
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diff changeset
379 def children(self):
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diff changeset
380 return []
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diff changeset
381
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diff changeset
382 def filectx(self, path):
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diff changeset
383 """get a file context from the working directory"""
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diff changeset
384 return workingfilectx(self._repo, path, workingctx=self)
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diff changeset
385
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diff changeset
386 def ancestor(self, c2):
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diff changeset
387 """return the ancestor context of self and c2"""
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diff changeset
388 return self._parents[0].ancestor(c2) # punt on two parents for now
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diff changeset
389
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diff changeset
390 class workingfilectx(filectx):
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parents: 3216
diff changeset
391 """A workingfilectx object makes access to data related to a particular
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diff changeset
392 file in the working directory convenient."""
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393 def __init__(self, repo, path, filelog=None, workingctx=None):
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diff changeset
394 """changeid can be a changeset revision, node, or tag.
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diff changeset
395 fileid can be a file revision or node."""
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diff changeset
396 self._repo = repo
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diff changeset
397 self._path = path
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diff changeset
398 self._changeid = None
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diff changeset
399 self._filerev = self._filenode = None
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diff changeset
400
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parents: 3216
diff changeset
401 if filelog:
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diff changeset
402 self._filelog = filelog
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diff changeset
403 if workingctx:
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diff changeset
404 self._changectx = workingctx
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diff changeset
405
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parents: 3216
diff changeset
406 def __getattr__(self, name):
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parents: 3216
diff changeset
407 if name == '_changectx':
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parents: 3216
diff changeset
408 self._changectx = workingctx(repo)
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diff changeset
409 return self._changectx
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parents: 3216
diff changeset
410 elif name == '_repopath':
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diff changeset
411 self._repopath = self._repo.dirstate.copied(p) or self._path
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parents: 3216
diff changeset
412 elif name == '_filelog':
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parents: 3216
diff changeset
413 self._filelog = self._repo.file(self._repopath)
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diff changeset
414 return self._filelog
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diff changeset
415 else:
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diff changeset
416 raise AttributeError, name
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parents: 3216
diff changeset
417
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parents: 3216
diff changeset
418 def __nonzero__(self):
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parents: 3216
diff changeset
419 return True
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parents: 3216
diff changeset
420
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parents: 3216
diff changeset
421 def __str__(self):
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parents: 3216
diff changeset
422 return "%s@." % self.path()
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diff changeset
423
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parents: 3216
diff changeset
424 def filectx(self, fileid):
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parents: 3216
diff changeset
425 '''opens an arbitrary revision of the file without
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parents: 3216
diff changeset
426 opening a new filelog'''
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parents: 3216
diff changeset
427 return filectx(self._repo, self._repopath, fileid=fileid,
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parents: 3216
diff changeset
428 filelog=self._filelog)
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parents: 3216
diff changeset
429
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parents: 3216
diff changeset
430 def rev(self):
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Matt Mackall <mpm@selenic.com>
parents: 3216
diff changeset
431 if hasattr(self, "_changectx"):
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Matt Mackall <mpm@selenic.com>
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diff changeset
432 return self._changectx.rev()
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diff changeset
433 return self._filelog.linkrev(self._filenode)
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Matt Mackall <mpm@selenic.com>
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diff changeset
434
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Matt Mackall <mpm@selenic.com>
parents: 3216
diff changeset
435 def data(self): return self._repo.wread(self._path)
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Matt Mackall <mpm@selenic.com>
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diff changeset
436 def renamed(self):
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parents: 3216
diff changeset
437 rp = self._repopath
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diff changeset
438 if rp == self._path:
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Matt Mackall <mpm@selenic.com>
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diff changeset
439 return None
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440 return rp, self._workingctx._parents._manifest.get(rp, nullid)
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Matt Mackall <mpm@selenic.com>
parents: 3216
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441
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Matt Mackall <mpm@selenic.com>
parents: 3216
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442 def parents(self):
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parents: 3216
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443 '''return parent filectxs, following copies if necessary'''
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Matt Mackall <mpm@selenic.com>
parents: 3216
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444 p = self._path
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Matt Mackall <mpm@selenic.com>
parents: 3216
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445 rp = self._repopath
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Matt Mackall <mpm@selenic.com>
parents: 3216
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446 pcl = self._workingctx._parents
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Matt Mackall <mpm@selenic.com>
parents: 3216
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447 fl = self._filelog
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Matt Mackall <mpm@selenic.com>
parents: 3216
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448 pl = [ (rp, pcl[0]._manifest.get(rp, nullid), fl) ]
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Matt Mackall <mpm@selenic.com>
parents: 3216
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449 if len(pcl) > 1:
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Matt Mackall <mpm@selenic.com>
parents: 3216
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450 if rp != p:
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Matt Mackall <mpm@selenic.com>
parents: 3216
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451 fl = None
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Matt Mackall <mpm@selenic.com>
parents: 3216
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452 pl.append((p, pcl[1]._manifest.get(p, nullid), fl))
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Matt Mackall <mpm@selenic.com>
parents: 3216
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453
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Matt Mackall <mpm@selenic.com>
parents: 3216
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454 return [ filectx(self._repo, p, fileid=n, filelog=l)
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parents: 3216
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455 for p,n,l in pl if n != nullid ]
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Matt Mackall <mpm@selenic.com>
parents: 3216
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456
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Matt Mackall <mpm@selenic.com>
parents: 3216
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457 def children(self):
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parents: 3216
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458 return []
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parents: 3216
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459