Mercurial > public > mercurial-scm > hg-stable

annotate mercurial/context.py @ 3132:81da3c45aabd

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Move defaultrev into changectx This also causes tag on a repository with no working directory to default to tip.
author Brendan Cully <brendan@kublai.com>
date Fri, 15 Sep 2006 15:23:52 -0700
parents 345bac2bc4ec
children abd9a05fca0b
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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 class changectx(object):
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9 """A changecontext object makes access to data related to a particular
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10 changeset convenient."""
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11 def __init__(self, repo, changeid=None):
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12 """changeid is a revision number, node, or tag"""
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13 self._repo = repo
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14
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15 if not changeid:
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16 p1, p2 = self._repo.dirstate.parents()
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17 self._rev = self._repo.changelog.rev(p1)
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18 if self._rev == -1:
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19 changeid = 'tip'
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20 else:
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21 self._node = p1
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22 return
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23
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24 self._node = self._repo.lookup(changeid)
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25 self._rev = self._repo.changelog.rev(self._node)
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26
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27 def changeset(self):
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28 try:
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29 return self._changeset
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30 except AttributeError:
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31 self._changeset = self._repo.changelog.read(self.node())
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32 return self._changeset
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33
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34 def manifest(self):
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35 try:
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36 return self._manifest
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37 except AttributeError:
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38 self._manifest = self._repo.manifest.read(self.changeset()[0])
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39 return self._manifest
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40
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41 def rev(self): return self._rev
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42 def node(self): return self._node
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43 def user(self): return self.changeset()[1]
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44 def date(self): return self.changeset()[2]
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45 def changedfiles(self): return self.changeset()[3]
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46 def description(self): return self.changeset()[4]
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47
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48 def parents(self):
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49 """return contexts for each parent changeset"""
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50 p = self._repo.changelog.parents(self._node)
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51 return [ changectx(self._repo, x) for x in p ]
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52
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53 def children(self):
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54 """return contexts for each child changeset"""
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55 c = self._repo.changelog.children(self._node)
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56 return [ changectx(self._repo, x) for x in c ]
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57
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58 def filenode(self, path):
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59 node, flag = self._repo.manifest.find(self.changeset()[0], path)
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60 return node
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61
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62 def filectx(self, path, fileid=None):
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63 """get a file context from this changeset"""
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64 if fileid is None:
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65 fileid = self.filenode(path)
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66 return filectx(self._repo, path, fileid=fileid)
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67
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68 def filectxs(self):
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69 """generate a file context for each file in this changeset's
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70 manifest"""
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71 mf = self.manifest()
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72 m = mf.keys()
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73 m.sort()
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74 for f in m:
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75 yield self.filectx(f, fileid=mf[f])
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76
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77 class filectx(object):
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78 """A filecontext object makes access to data related to a particular
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79 filerevision convenient."""
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80 def __init__(self, repo, path, changeid=None, fileid=None):
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81 """changeid can be a changeset revision, node, or tag.
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82 fileid can be a file revision or node."""
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83 self._repo = repo
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84 self._path = path
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85
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86 assert changeid or fileid
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87
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88 if not fileid:
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89 # if given a changeset id, go ahead and look up the file
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90 self._changeid = changeid
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91 self._changectx = self.changectx()
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92 self._filelog = self._repo.file(self._path)
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93 self._filenode = self._changectx.filenode(self._path)
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94 else:
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95 # else be lazy
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96 self._filelog = self._repo.file(self._path)
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97 self._filenode = self._filelog.lookup(fileid)
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98 self._changeid = self._filelog.linkrev(self._filenode)
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99 self._filerev = self._filelog.rev(self._filenode)
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100
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101 def changectx(self):
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102 try:
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103 return self._changectx
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104 except AttributeError:
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105 self._changectx = changectx(self._repo, self._changeid)
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106 return self._changectx
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107
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108 def filerev(self): return self._filerev
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109 def filenode(self): return self._filenode
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110 def filelog(self): return self._filelog
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111
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112 def rev(self): return self.changectx().rev()
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113 def node(self): return self.changectx().node()
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114 def user(self): return self.changectx().user()
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115 def date(self): return self.changectx().date()
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116 def files(self): return self.changectx().files()
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117 def description(self): return self.changectx().description()
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118 def manifest(self): return self.changectx().manifest()
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119
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120 def data(self): return self._filelog.read(self._filenode)
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121 def metadata(self): return self._filelog.readmeta(self._filenode)
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122 def renamed(self): return self._filelog.renamed(self._filenode)
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123
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124 def parents(self):
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125 # need to fix for renames
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126 p = self._filelog.parents(self._filenode)
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127 return [ filectx(self._repo, self._path, fileid=x) for x in p ]
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128
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129 def children(self):
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130 # hard for renames
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131 c = self._filelog.children(self._filenode)
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132 return [ filectx(self._repo, self._path, fileid=x) for x in c ]
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133
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134 def annotate(self):
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135 return self._filelog.annotate(self._filenode)