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annotate hgext/git/dirstate.py @ 44492:eb061d272af4

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git: correctly handle p1() on dirstate when underlying git repo is empty This shows up in my next change, which ends up making an empty git repo and then running hg. Differential Revision: https://phab.mercurial-scm.org/D8271
author Augie Fackler <raf@durin42.com>
date Tue, 10 Mar 2020 13:10:45 -0400
parents ec54b3d2af0b
children 7bbb83e4e8de
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 from __future__ import absolute_import
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2
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3 import contextlib
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4 import errno
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5 import os
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6
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7 from mercurial import (
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8 error,
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9 extensions,
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10 match as matchmod,
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11 node as nodemod,
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12 pycompat,
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13 scmutil,
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14 util,
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15 )
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16 from mercurial.interfaces import (
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17 dirstate as intdirstate,
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18 util as interfaceutil,
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19 )
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20
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21 from . import gitutil
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22
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23 pygit2 = gitutil.get_pygit2()
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25
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26 def readpatternfile(orig, filepath, warn, sourceinfo=False):
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27 if not (b'info/exclude' in filepath or filepath.endswith(b'.gitignore')):
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28 return orig(filepath, warn, sourceinfo=False)
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29 result = []
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30 warnings = []
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31 with open(filepath, b'rb') as fp:
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32 for l in fp:
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33 l = l.strip()
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34 if not l or l.startswith(b'#'):
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35 continue
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36 if l.startswith(b'!'):
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37 warnings.append(b'unsupported ignore pattern %s' % l)
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38 continue
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39 if l.startswith(b'/'):
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40 result.append(b'rootglob:' + l[1:])
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41 else:
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42 result.append(b'relglob:' + l)
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43 return result, warnings
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45
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46 extensions.wrapfunction(matchmod, b'readpatternfile', readpatternfile)
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48
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49 _STATUS_MAP = {}
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50 if pygit2:
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51 _STATUS_MAP = {
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52 pygit2.GIT_STATUS_CONFLICTED: b'm',
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53 pygit2.GIT_STATUS_CURRENT: b'n',
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54 pygit2.GIT_STATUS_IGNORED: b'?',
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55 pygit2.GIT_STATUS_INDEX_DELETED: b'r',
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56 pygit2.GIT_STATUS_INDEX_MODIFIED: b'n',
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57 pygit2.GIT_STATUS_INDEX_NEW: b'a',
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58 pygit2.GIT_STATUS_INDEX_RENAMED: b'a',
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59 pygit2.GIT_STATUS_INDEX_TYPECHANGE: b'n',
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60 pygit2.GIT_STATUS_WT_DELETED: b'r',
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61 pygit2.GIT_STATUS_WT_MODIFIED: b'n',
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62 pygit2.GIT_STATUS_WT_NEW: b'?',
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63 pygit2.GIT_STATUS_WT_RENAMED: b'a',
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64 pygit2.GIT_STATUS_WT_TYPECHANGE: b'n',
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65 pygit2.GIT_STATUS_WT_UNREADABLE: b'?',
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66 pygit2.GIT_STATUS_INDEX_MODIFIED | pygit2.GIT_STATUS_WT_MODIFIED: 'm',
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67 }
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69
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70 @interfaceutil.implementer(intdirstate.idirstate)
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71 class gitdirstate(object):
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72 def __init__(self, ui, root, gitrepo):
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73 self._ui = ui
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74 self._root = os.path.dirname(root)
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75 self.git = gitrepo
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76 self._plchangecallbacks = {}
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77
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78 def p1(self):
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79 try:
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80 return self.git.head.peel().id.raw
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81 except pygit2.GitError:
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82 # Typically happens when peeling HEAD fails, as in an
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83 # empty repository.
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84 return nodemod.nullid
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85
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86 def p2(self):
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87 # TODO: MERGE_HEAD? something like that, right?
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88 return nodemod.nullid
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89
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90 def setparents(self, p1, p2=nodemod.nullid):
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91 assert p2 == nodemod.nullid, b'TODO merging support'
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92 self.git.head.set_target(gitutil.togitnode(p1))
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93
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94 @util.propertycache
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95 def identity(self):
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96 return util.filestat.frompath(
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97 os.path.join(self._root, b'.git', b'index')
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98 )
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99
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100 def branch(self):
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101 return b'default'
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102
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103 def parents(self):
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104 # TODO how on earth do we find p2 if a merge is in flight?
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105 return self.p1(), nodemod.nullid
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106
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107 def __iter__(self):
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108 return (pycompat.fsencode(f.path) for f in self.git.index)
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109
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110 def items(self):
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111 for ie in self.git.index:
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112 yield ie.path, None # value should be a dirstatetuple
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113
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114 # py2,3 compat forward
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115 iteritems = items
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116
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117 def __getitem__(self, filename):
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118 try:
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119 gs = self.git.status_file(filename)
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120 except KeyError:
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121 return b'?'
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122 return _STATUS_MAP[gs]
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123
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124 def __contains__(self, filename):
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125 try:
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126 gs = self.git.status_file(filename)
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127 return _STATUS_MAP[gs] != b'?'
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128 except KeyError:
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129 return False
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130
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131 def status(self, match, subrepos, ignored, clean, unknown):
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132 # TODO handling of clean files - can we get that from git.status()?
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133 modified, added, removed, deleted, unknown, ignored, clean = (
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diff changeset
134 [],
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
135 [],
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Augie Fackler <augie@google.com>
parents:
diff changeset
136 [],
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
137 [],
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
138 [],
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
139 [],
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
140 [],
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parents:
diff changeset
141 )
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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diff changeset
142 gstatus = self.git.status()
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diff changeset
143 for path, status in gstatus.items():
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144 path = pycompat.fsencode(path)
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diff changeset
145 if status == pygit2.GIT_STATUS_IGNORED:
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diff changeset
146 if path.endswith(b'/'):
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diff changeset
147 continue
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diff changeset
148 ignored.append(path)
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diff changeset
149 elif status in (
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150 pygit2.GIT_STATUS_WT_MODIFIED,
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151 pygit2.GIT_STATUS_INDEX_MODIFIED,
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152 pygit2.GIT_STATUS_WT_MODIFIED
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153 | pygit2.GIT_STATUS_INDEX_MODIFIED,
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154 ):
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diff changeset
155 modified.append(path)
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156 elif status == pygit2.GIT_STATUS_INDEX_NEW:
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157 added.append(path)
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diff changeset
158 elif status == pygit2.GIT_STATUS_WT_NEW:
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diff changeset
159 unknown.append(path)
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160 elif status == pygit2.GIT_STATUS_WT_DELETED:
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161 deleted.append(path)
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162 elif status == pygit2.GIT_STATUS_INDEX_DELETED:
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163 removed.append(path)
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164 else:
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165 raise error.Abort(
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166 b'unhandled case: status for %r is %r' % (path, status)
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167 )
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
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168
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169 # TODO are we really always sure of status here?
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170 return (
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171 False,
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diff changeset
172 scmutil.status(
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173 modified, added, removed, deleted, unknown, ignored, clean
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diff changeset
174 ),
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175 )
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176
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177 def flagfunc(self, buildfallback):
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178 # TODO we can do better
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179 return buildfallback()
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180
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181 def getcwd(self):
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182 # TODO is this a good way to do this?
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183 return os.path.dirname(
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184 os.path.dirname(pycompat.fsencode(self.git.path))
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185 )
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diff changeset
186
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187 def normalize(self, path):
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188 normed = util.normcase(path)
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189 assert normed == path, b"TODO handling of case folding: %s != %s" % (
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190 normed,
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diff changeset
191 path,
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192 )
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
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193 return path
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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194
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diff changeset
195 @property
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196 def _checklink(self):
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197 return util.checklink(os.path.dirname(pycompat.fsencode(self.git.path)))
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198
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199 def copies(self):
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200 # TODO support copies?
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201 return {}
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parents:
diff changeset
202
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diff changeset
203 # # TODO what the heck is this
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204 _filecache = set()
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diff changeset
205
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diff changeset
206 def pendingparentchange(self):
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diff changeset
207 # TODO: we need to implement the context manager bits and
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diff changeset
208 # correctly stage/revert index edits.
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diff changeset
209 return False
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
210
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diff changeset
211 def write(self, tr):
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diff changeset
212 # TODO: call parent change callbacks
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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diff changeset
213
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
214 if tr:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
215
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parents:
diff changeset
216 def writeinner(category):
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parents:
diff changeset
217 self.git.index.write()
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parents:
diff changeset
218
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parents:
diff changeset
219 tr.addpending(b'gitdirstate', writeinner)
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
220 else:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
221 self.git.index.write()
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
222
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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diff changeset
223 def pathto(self, f, cwd=None):
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parents:
diff changeset
224 if cwd is None:
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diff changeset
225 cwd = self.getcwd()
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parents:
diff changeset
226 # TODO core dirstate does something about slashes here
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parents:
diff changeset
227 assert isinstance(f, bytes)
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diff changeset
228 r = util.pathto(self._root, cwd, f)
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parents:
diff changeset
229 return r
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
230
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
231 def matches(self, match):
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
232 for x in self.git.index:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
233 p = pycompat.fsencode(x.path)
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
234 if match(p):
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
235 yield p
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
236
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
237 def normal(self, f, parentfiledata=None):
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
238 """Mark a file normal and clean."""
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
239 # TODO: for now we just let libgit2 re-stat the file. We can
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
240 # clearly do better.
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
241
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
242 def normallookup(self, f):
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
243 """Mark a file normal, but possibly dirty."""
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parents:
diff changeset
244 # TODO: for now we just let libgit2 re-stat the file. We can
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
245 # clearly do better.
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
246
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
247 def walk(self, match, subrepos, unknown, ignored, full=True):
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parents:
diff changeset
248 # TODO: we need to use .status() and not iterate the index,
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
249 # because the index doesn't force a re-walk and so `hg add` of
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parents:
diff changeset
250 # a new file without an intervening call to status will
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
251 # silently do nothing.
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parents:
diff changeset
252 r = {}
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
253 cwd = self.getcwd()
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
254 for path, status in self.git.status().items():
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
255 if path.startswith('.hg/'):
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
256 continue
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
257 path = pycompat.fsencode(path)
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
258 if not match(path):
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
259 continue
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
260 # TODO construct the stat info from the status object?
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
261 try:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
262 s = os.stat(os.path.join(cwd, path))
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
263 except OSError as e:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
264 if e.errno != errno.ENOENT:
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
265 raise
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
266 continue
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
267 r[path] = s
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
268 return r
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
269
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
270 def savebackup(self, tr, backupname):
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
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parents:
diff changeset
271 # TODO: figure out a strategy for saving index backups.
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
diff changeset
272 pass
ad718271a9eb git: skeleton of a new extension to _directly_ operate on git repos
Augie Fackler <augie@google.com>
parents:
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273
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274 def restorebackup(self, tr, backupname):
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275 # TODO: figure out a strategy for saving index backups.
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276 pass
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277
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278 def add(self, f):
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279 self.git.index.add(pycompat.fsdecode(f))
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280
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281 def drop(self, f):
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282 self.git.index.remove(pycompat.fsdecode(f))
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283
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284 def remove(self, f):
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285 self.git.index.remove(pycompat.fsdecode(f))
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286
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287 def copied(self, path):
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288 # TODO: track copies?
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289 return None
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290
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291 @contextlib.contextmanager
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292 def parentchange(self):
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293 # TODO: track this maybe?
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294 yield
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295
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296 def addparentchangecallback(self, category, callback):
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297 # TODO: should this be added to the dirstate interface?
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298 self._plchangecallbacks[category] = callback
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299
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300 def clearbackup(self, tr, backupname):
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301 # TODO
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302 pass