Mercurial > public > mercurial-scm > hg-stable

annotate mercurial/context.py @ 3216:d865390c1781

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
context: simplify repr methods
author Matt Mackall <mpm@selenic.com>
date Mon, 02 Oct 2006 15:28:44 -0500
parents 931288cf58a7
children 6d98149d70fe
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 demandload import *
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9 from node import *
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10 demandload(globals(), 'bdiff')
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11
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12 from node import *
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13 from demandload import demandload
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14 demandload(globals(), "ancestor util")
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15
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16 class changectx(object):
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17 """A changecontext object makes access to data related to a particular
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18 changeset convenient."""
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19 def __init__(self, repo, changeid=None):
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20 """changeid is a revision number, node, or tag"""
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21 self._repo = repo
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22
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23 if not changeid and changeid != 0:
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24 p1, p2 = self._repo.dirstate.parents()
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25 self._rev = self._repo.changelog.rev(p1)
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26 if self._rev == -1:
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27 changeid = 'tip'
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28 else:
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29 self._node = p1
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30 return
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31
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32 self._node = self._repo.lookup(changeid)
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33 self._rev = self._repo.changelog.rev(self._node)
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34
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35 def __str__(self):
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36 return short(self.node())
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37
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38 def __repr__(self):
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39 return "<changectx %s>" % str(self)
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40
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41 def __eq__(self, other):
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42 return self._rev == other._rev
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43
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44 def __nonzero__(self):
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45 return self._rev != -1
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46
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47 def __getattr__(self, name):
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48 if name == '_changeset':
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49 self._changeset = self._repo.changelog.read(self.node())
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50 return self._changeset
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51 elif name == '_manifest':
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52 self._manifest = self._repo.manifest.read(self._changeset[0])
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53 return self._manifest
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54 else:
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55 raise AttributeError, name
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56
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57 def changeset(self): return self._changeset
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58 def manifest(self): return self._manifest
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59
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60 def rev(self): return self._rev
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61 def node(self): return self._node
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62 def user(self): return self._changeset[1]
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63 def date(self): return self._changeset[2]
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64 def files(self): return self._changeset[3]
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65 def description(self): return self._changeset[4]
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66
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67 def parents(self):
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68 """return contexts for each parent changeset"""
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69 p = self._repo.changelog.parents(self._node)
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70 return [ changectx(self._repo, x) for x in p ]
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71
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72 def children(self):
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73 """return contexts for each child changeset"""
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74 c = self._repo.changelog.children(self._node)
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75 return [ changectx(self._repo, x) for x in c ]
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76
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77 def filenode(self, path):
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78 if hasattr(self, "_manifest"):
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79 return self._manifest[path]
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80 node, flag = self._repo.manifest.find(self._changeset[0], path)
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81 return node
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82
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83 def filectx(self, path, fileid=None):
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84 """get a file context from this changeset"""
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85 if fileid is None:
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86 fileid = self.filenode(path)
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87 return filectx(self._repo, path, fileid=fileid, changectx=self)
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88
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89 def filectxs(self):
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90 """generate a file context for each file in this changeset's
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91 manifest"""
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92 mf = self.manifest()
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93 m = mf.keys()
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94 m.sort()
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95 for f in m:
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96 yield self.filectx(f, fileid=mf[f])
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97
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98 def ancestor(self, c2):
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99 """
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100 return the ancestor context of self and c2
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101 """
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102 n = self._repo.changelog.ancestor(self._node, c2._node)
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103 return changectx(self._repo, n)
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104
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105 class filectx(object):
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106 """A filecontext object makes access to data related to a particular
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107 filerevision convenient."""
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108 def __init__(self, repo, path, changeid=None, fileid=None,
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109 filelog=None, changectx=None):
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110 """changeid can be a changeset revision, node, or tag.
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111 fileid can be a file revision or node."""
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112 self._repo = repo
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113 self._path = path
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114
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115 assert changeid is not None or fileid is not None
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116
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117 if filelog:
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118 self._filelog = filelog
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119 if changectx:
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120 self._changectx = changectx
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121 self._changeid = changectx.node()
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122
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123 if fileid is None:
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124 self._changeid = changeid
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125 else:
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126 self._fileid = fileid
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127
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128 def __getattr__(self, name):
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129 if name == '_changectx':
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130 self._changectx = changectx(self._repo, self._changeid)
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131 return self._changectx
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132 elif name == '_filelog':
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133 self._filelog = self._repo.file(self._path)
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134 return self._filelog
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135 elif name == '_changeid':
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136 self._changeid = self._filelog.linkrev(self._filenode)
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137 return self._changeid
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138 elif name == '_filenode':
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139 if hasattr(self, "_fileid"):
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140 self._filenode = self._filelog.lookup(self._fileid)
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141 else:
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142 self._filenode = self._changectx.filenode(self._path)
3144
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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
05c588e1803d context: add __nonzero__ methods
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diff changeset
150 def __nonzero__(self):
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diff changeset
151 return self._filerev != nullid
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152
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153 def __str__(self):
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diff changeset
154 return "%s@%s" % (self.path(), short(self.node()))
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diff changeset
155
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diff changeset
156 def __repr__(self):
3216
d865390c1781 context: simplify repr methods
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157 return "<filectx %s>" % str(self)
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diff changeset
158
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159 def __eq__(self, other):
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diff changeset
160 return self._path == other._path and self._changeid == other._changeid
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161
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diff changeset
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()
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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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parents:
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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
da85145d4571 filectx: add rename traversal for parents()
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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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197
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diff changeset
198 return [ filectx(self._repo, p, fileid=n, filelog=l)
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diff changeset
199 for p,n,l in pl if n != nullid ]
2563
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200
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201 def children(self):
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parents:
diff changeset
202 # hard for renames
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diff changeset
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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diff changeset
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):
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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]):
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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)
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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
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diff changeset
229 pl = [ (p, f._filelog.rev(n)) for n in f._filelog.parents(f._filenode) ]
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diff changeset
230
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diff changeset
231 if follow:
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diff changeset
232 r = f.renamed()
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diff changeset
233 if r:
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diff changeset
234 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
235
3172
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diff changeset
236 return [ getctx(p, n) for p, n in pl if n != -1 ]
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diff changeset
237
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diff changeset
238 # find all ancestors
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diff changeset
239 needed = {self: 1}
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diff changeset
240 visit = [self]
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diff changeset
241 files = [self._path]
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diff changeset
242 while visit:
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diff changeset
243 f = visit.pop(0)
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diff changeset
244 for p in parents(f):
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diff changeset
245 if p not in needed:
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diff changeset
246 needed[p] = 1
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diff changeset
247 visit.append(p)
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diff changeset
248 if p._path not in files:
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diff changeset
249 files.append(p._path)
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250 else:
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diff changeset
251 # count how many times we'll use this
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diff changeset
252 needed[p] += 1
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diff changeset
253
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diff changeset
254 # sort by revision (per file) which is a topological order
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diff changeset
255 visit = []
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diff changeset
256 files.reverse()
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diff changeset
257 for f in files:
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diff changeset
258 fn = [(n._filerev, n) for n in needed.keys() if n._path == f]
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diff changeset
259 fn.sort()
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diff changeset
260 visit.extend(fn)
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diff changeset
261 hist = {}
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diff changeset
262
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diff changeset
263 for r, f in visit:
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diff changeset
264 curr = decorate(f.data(), f)
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diff changeset
265 for p in parents(f):
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diff changeset
266 if p != nullid:
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diff changeset
267 curr = pair(hist[p], curr)
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diff changeset
268 # trim the history of unneeded revs
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diff changeset
269 needed[p] -= 1
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diff changeset
270 if not needed[p]:
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diff changeset
271 del hist[p]
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diff changeset
272 hist[f] = curr
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diff changeset
273
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diff changeset
274 return zip(hist[f][0], hist[f][1].splitlines(1))
3124
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diff changeset
275
3126
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diff changeset
276 def ancestor(self, fc2):
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diff changeset
277 """
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diff changeset
278 find the common ancestor file context, if any, of self, and fc2
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diff changeset
279 """
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diff changeset
280
3135
b1db258e875c Abstract ancestor algorithm into generic function
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diff changeset
281 acache = {}
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diff changeset
282 flcache = {self._path:self._filelog, fc2._path:fc2._filelog}
3135
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diff changeset
283 def parents(vertex):
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diff changeset
284 if vertex in acache:
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diff changeset
285 return acache[vertex]
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diff changeset
286 f, n = vertex
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diff changeset
287 if f not in flcache:
3126
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288 flcache[f] = self._repo.file(f)
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289 fl = flcache[f]
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290 pl = [ (f,p) for p in fl.parents(n) if p != nullid ]
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291 re = fl.renamed(n)
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292 if re:
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293 pl.append(re)
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294 acache[vertex]=pl
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295 return pl
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296
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297 a, b = (self._path, self._filenode), (fc2._path, fc2._filenode)
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298 v = ancestor.ancestor(a, b, parents)
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299 if v:
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300 f,n = v
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301 return filectx(self._repo, f, fileid=n, filelog=flcache[f])
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302
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303 return None