Mercurial > public > mercurial-scm > hg-stable
annotate mercurial/context.py @ 3125:02b22fefc01f
changectx: add ancestor function
author | Matt Mackall <mpm@selenic.com> |
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date | Sun, 17 Sep 2006 22:59:33 -0500 |
parents | 4d021b91cb26 |
children | 4bf2e895cf86 |
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1 # context.py - changeset and file context objects for mercurial |
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2 # |
2859 | 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 |
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10 class changectx(object): |
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11 """A changecontext object makes access to data related to a particular |
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12 changeset convenient.""" |
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13 def __init__(self, repo, changeid): |
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14 """changeid is a revision number, node, or tag""" |
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15 self._repo = repo |
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16 |
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17 self._node = self._repo.lookup(changeid) |
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18 self._rev = self._repo.changelog.rev(self._node) |
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19 |
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20 def changeset(self): |
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21 try: |
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22 return self._changeset |
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23 except AttributeError: |
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24 self._changeset = self._repo.changelog.read(self.node()) |
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25 return self._changeset |
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26 |
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27 def manifest(self): |
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28 try: |
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29 return self._manifest |
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30 except AttributeError: |
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31 self._manifest = self._repo.manifest.read(self.changeset()[0]) |
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32 return self._manifest |
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33 |
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34 def rev(self): return self._rev |
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35 def node(self): return self._node |
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36 def user(self): return self.changeset()[1] |
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37 def date(self): return self.changeset()[2] |
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38 def files(self): return self.changeset()[3] |
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39 def description(self): return self.changeset()[4] |
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40 |
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41 def parents(self): |
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42 """return contexts for each parent changeset""" |
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43 p = self._repo.changelog.parents(self._node) |
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44 return [ changectx(self._repo, x) for x in p ] |
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45 |
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46 def children(self): |
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47 """return contexts for each child changeset""" |
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48 c = self._repo.changelog.children(self._node) |
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49 return [ changectx(self._repo, x) for x in c ] |
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50 |
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51 def filenode(self, path): |
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52 node, flag = self._repo.manifest.find(self.changeset()[0], path) |
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53 return node |
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54 |
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55 def filectx(self, path, fileid=None): |
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56 """get a file context from this changeset""" |
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57 if fileid is None: |
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58 fileid = self.filenode(path) |
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59 return filectx(self._repo, path, fileid=fileid) |
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60 |
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61 def filectxs(self): |
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62 """generate a file context for each file in this changeset's |
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63 manifest""" |
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64 mf = self.manifest() |
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65 m = mf.keys() |
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66 m.sort() |
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67 for f in m: |
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68 yield self.filectx(f, fileid=mf[f]) |
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69 |
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70 def ancestor(self, c2): |
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71 """ |
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72 return the ancestor context of self and c2 |
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73 """ |
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74 n = self._repo.changelog.ancestor(self._node, c2._node) |
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75 return changectx(self._repo, n) |
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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, filelog=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 filelog: |
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89 self._filelog = filelog |
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90 else: |
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91 self._filelog = self._repo.file(self._path) |
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92 |
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93 if not fileid: |
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94 # if given a changeset id, go ahead and look up the file |
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95 self._changeid = changeid |
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96 self._changectx = self.changectx() |
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97 self._filenode = self._changectx.filenode(self._path) |
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98 else: |
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99 # else delay changectx creation |
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100 self._filenode = self._filelog.lookup(fileid) |
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101 self._changeid = self._filelog.linkrev(self._filenode) |
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102 self._filerev = self._filelog.rev(self._filenode) |
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103 |
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104 def changectx(self): |
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105 try: |
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106 return self._changectx |
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107 except AttributeError: |
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108 self._changectx = changectx(self._repo, self._changeid) |
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109 return self._changectx |
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110 |
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111 def filerev(self): return self._filerev |
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112 def filenode(self): return self._filenode |
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113 def filelog(self): return self._filelog |
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114 |
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115 def rev(self): return self.changectx().rev() |
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116 def node(self): return self.changectx().node() |
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117 def user(self): return self.changectx().user() |
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118 def date(self): return self.changectx().date() |
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119 def files(self): return self.changectx().files() |
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120 def description(self): return self.changectx().description() |
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121 def manifest(self): return self.changectx().manifest() |
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122 |
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123 def data(self): return self._filelog.read(self._filenode) |
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124 def renamed(self): return self._filelog.renamed(self._filenode) |
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125 def path(self): return self._path |
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126 |
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127 def parents(self): |
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128 p = self._path |
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129 fl = self._filelog |
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130 pl = [ (p, n, fl) for n in self._filelog.parents(self._filenode) ] |
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131 |
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132 r = self.renamed() |
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133 if r: |
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134 pl[0] = (r[0], r[1], None) |
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135 |
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136 return [ filectx(self._repo, p, fileid=n, filelog=l) |
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137 for p,n,l in pl if n != nullid ] |
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138 |
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139 def children(self): |
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140 # hard for renames |
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141 c = self._filelog.children(self._filenode) |
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142 return [ filectx(self._repo, self._path, fileid=x, |
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143 filelog=self._filelog) for x in c ] |
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144 |
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145 def annotate(self): |
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146 return self._filelog.annotate(self._filenode) |
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147 |