Mercurial > hg
annotate hgext/journal.py @ 46604:ad107ed7a4aa
ci: test real dependency installation for pip
In the past, the pip smoke test inhibited actual dependency
installation, but that fails in different environments for setuptools
itself. Since it isn't what we actually want to test (which is pip
install), allow this to call home, if HGTESTS_ALLOW_NETIO=1 is set
in the environment.
Differential Revision: https://phab.mercurial-scm.org/D9950
author | Joerg Sonnenberger <joerg@bec.de> |
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date | Thu, 04 Feb 2021 23:23:35 +0100 |
parents | 59fa3890d40a |
children | d55b71393907 |
rev | line source |
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1 # journal.py |
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2 # |
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3 # Copyright 2014-2016 Facebook, Inc. |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
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6 # GNU General Public License version 2 or any later version. |
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7 """track previous positions of bookmarks (EXPERIMENTAL) |
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8 |
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9 This extension adds a new command: `hg journal`, which shows you where |
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10 bookmarks were previously located. |
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11 |
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12 """ |
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13 |
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14 from __future__ import absolute_import |
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15 |
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16 import collections |
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17 import errno |
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18 import os |
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19 import weakref |
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20 |
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21 from mercurial.i18n import _ |
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22 from mercurial.node import ( |
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23 bin, |
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24 hex, |
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25 nullid, |
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26 ) |
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27 |
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28 from mercurial import ( |
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29 bookmarks, |
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30 cmdutil, |
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31 dispatch, |
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32 encoding, |
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33 error, |
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34 extensions, |
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35 hg, |
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36 localrepo, |
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37 lock, |
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38 logcmdutil, |
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39 pycompat, |
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40 registrar, |
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41 util, |
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42 ) |
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43 from mercurial.utils import ( |
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44 dateutil, |
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45 procutil, |
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46 stringutil, |
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47 ) |
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48 |
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49 cmdtable = {} |
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50 command = registrar.command(cmdtable) |
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51 |
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52 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for |
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53 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should |
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54 # be specifying the version(s) of Mercurial they are tested with, or |
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55 # leave the attribute unspecified. |
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56 testedwith = b'ships-with-hg-core' |
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57 |
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58 # storage format version; increment when the format changes |
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59 storageversion = 0 |
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60 |
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61 # namespaces |
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62 bookmarktype = b'bookmark' |
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63 wdirparenttype = b'wdirparent' |
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64 # In a shared repository, what shared feature name is used |
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65 # to indicate this namespace is shared with the source? |
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66 sharednamespaces = { |
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67 bookmarktype: hg.sharedbookmarks, |
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68 } |
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69 |
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70 # Journal recording, register hooks and storage object |
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71 def extsetup(ui): |
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72 extensions.wrapfunction(dispatch, b'runcommand', runcommand) |
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73 extensions.wrapfunction(bookmarks.bmstore, b'_write', recordbookmarks) |
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74 extensions.wrapfilecache( |
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75 localrepo.localrepository, b'dirstate', wrapdirstate |
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76 ) |
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77 extensions.wrapfunction(hg, b'postshare', wrappostshare) |
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78 extensions.wrapfunction(hg, b'copystore', unsharejournal) |
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79 |
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80 |
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81 def reposetup(ui, repo): |
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82 if repo.local(): |
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83 repo.journal = journalstorage(repo) |
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84 repo._wlockfreeprefix.add(b'namejournal') |
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85 |
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86 dirstate, cached = localrepo.isfilecached(repo, b'dirstate') |
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87 if cached: |
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88 # already instantiated dirstate isn't yet marked as |
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89 # "journal"-ing, even though repo.dirstate() was already |
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90 # wrapped by own wrapdirstate() |
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91 _setupdirstate(repo, dirstate) |
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92 |
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93 |
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94 def runcommand(orig, lui, repo, cmd, fullargs, *args): |
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95 """Track the command line options for recording in the journal""" |
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96 journalstorage.recordcommand(*fullargs) |
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97 return orig(lui, repo, cmd, fullargs, *args) |
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98 |
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99 |
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100 def _setupdirstate(repo, dirstate): |
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101 dirstate.journalstorage = repo.journal |
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102 dirstate.addparentchangecallback(b'journal', recorddirstateparents) |
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103 |
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104 |
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105 # hooks to record dirstate changes |
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106 def wrapdirstate(orig, repo): |
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107 """Make journal storage available to the dirstate object""" |
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108 dirstate = orig(repo) |
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109 if util.safehasattr(repo, 'journal'): |
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110 _setupdirstate(repo, dirstate) |
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111 return dirstate |
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112 |
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113 |
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114 def recorddirstateparents(dirstate, old, new): |
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115 """Records all dirstate parent changes in the journal.""" |
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116 old = list(old) |
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117 new = list(new) |
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118 if util.safehasattr(dirstate, 'journalstorage'): |
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119 # only record two hashes if there was a merge |
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120 oldhashes = old[:1] if old[1] == nullid else old |
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121 newhashes = new[:1] if new[1] == nullid else new |
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122 dirstate.journalstorage.record( |
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123 wdirparenttype, b'.', oldhashes, newhashes |
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124 ) |
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125 |
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126 |
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127 # hooks to record bookmark changes (both local and remote) |
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128 def recordbookmarks(orig, store, fp): |
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129 """Records all bookmark changes in the journal.""" |
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130 repo = store._repo |
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131 if util.safehasattr(repo, 'journal'): |
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132 oldmarks = bookmarks.bmstore(repo) |
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133 for mark, value in pycompat.iteritems(store): |
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134 oldvalue = oldmarks.get(mark, nullid) |
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135 if value != oldvalue: |
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136 repo.journal.record(bookmarktype, mark, oldvalue, value) |
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137 return orig(store, fp) |
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138 |
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139 |
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140 # shared repository support |
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141 def _readsharedfeatures(repo): |
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142 """A set of shared features for this repository""" |
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143 try: |
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144 return set(repo.vfs.read(b'shared').splitlines()) |
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145 except IOError as inst: |
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146 if inst.errno != errno.ENOENT: |
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147 raise |
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148 return set() |
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149 |
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150 |
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151 def _mergeentriesiter(*iterables, **kwargs): |
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152 """Given a set of sorted iterables, yield the next entry in merged order |
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153 |
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154 Note that by default entries go from most recent to oldest. |
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155 """ |
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156 order = kwargs.pop('order', max) |
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157 iterables = [iter(it) for it in iterables] |
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158 # this tracks still active iterables; iterables are deleted as they are |
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159 # exhausted, which is why this is a dictionary and why each entry also |
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160 # stores the key. Entries are mutable so we can store the next value each |
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161 # time. |
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162 iterable_map = {} |
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163 for key, it in enumerate(iterables): |
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164 try: |
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165 iterable_map[key] = [next(it), key, it] |
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166 except StopIteration: |
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167 # empty entry, can be ignored |
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168 pass |
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169 |
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170 while iterable_map: |
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171 value, key, it = order(pycompat.itervalues(iterable_map)) |
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172 yield value |
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173 try: |
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174 iterable_map[key][0] = next(it) |
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175 except StopIteration: |
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176 # this iterable is empty, remove it from consideration |
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177 del iterable_map[key] |
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178 |
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179 |
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180 def wrappostshare(orig, sourcerepo, destrepo, **kwargs): |
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181 """Mark this shared working copy as sharing journal information""" |
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182 with destrepo.wlock(): |
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183 orig(sourcerepo, destrepo, **kwargs) |
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184 with destrepo.vfs(b'shared', b'a') as fp: |
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185 fp.write(b'journal\n') |
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186 |
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187 |
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188 def unsharejournal(orig, ui, repo, repopath): |
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189 """Copy shared journal entries into this repo when unsharing""" |
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190 if ( |
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191 repo.path == repopath |
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192 and repo.shared() |
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193 and util.safehasattr(repo, 'journal') |
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194 ): |
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195 sharedrepo = hg.sharedreposource(repo) |
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196 sharedfeatures = _readsharedfeatures(repo) |
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197 if sharedrepo and sharedfeatures > {b'journal'}: |
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198 # there is a shared repository and there are shared journal entries |
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199 # to copy. move shared date over from source to destination but |
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200 # move the local file first |
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201 if repo.vfs.exists(b'namejournal'): |
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202 journalpath = repo.vfs.join(b'namejournal') |
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203 util.rename(journalpath, journalpath + b'.bak') |
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204 storage = repo.journal |
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205 local = storage._open( |
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206 repo.vfs, filename=b'namejournal.bak', _newestfirst=False |
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207 ) |
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208 shared = ( |
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209 e |
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210 for e in storage._open(sharedrepo.vfs, _newestfirst=False) |
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211 if sharednamespaces.get(e.namespace) in sharedfeatures |
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212 ) |
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213 for entry in _mergeentriesiter(local, shared, order=min): |
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214 storage._write(repo.vfs, entry) |
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215 |
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216 return orig(ui, repo, repopath) |
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217 |
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218 |
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219 class journalentry( |
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220 collections.namedtuple( |
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221 'journalentry', |
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222 'timestamp user command namespace name oldhashes newhashes', |
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223 ) |
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224 ): |
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225 """Individual journal entry |
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226 |
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227 * timestamp: a mercurial (time, timezone) tuple |
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228 * user: the username that ran the command |
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229 * namespace: the entry namespace, an opaque string |
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230 * name: the name of the changed item, opaque string with meaning in the |
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231 namespace |
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232 * command: the hg command that triggered this record |
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233 * oldhashes: a tuple of one or more binary hashes for the old location |
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234 * newhashes: a tuple of one or more binary hashes for the new location |
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235 |
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236 Handles serialisation from and to the storage format. Fields are |
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237 separated by newlines, hashes are written out in hex separated by commas, |
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238 timestamp and timezone are separated by a space. |
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239 |
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240 """ |
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241 |
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242 @classmethod |
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243 def fromstorage(cls, line): |
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244 ( |
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245 time, |
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246 user, |
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247 command, |
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248 namespace, |
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249 name, |
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250 oldhashes, |
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251 newhashes, |
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252 ) = line.split(b'\n') |
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253 timestamp, tz = time.split() |
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254 timestamp, tz = float(timestamp), int(tz) |
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255 oldhashes = tuple(bin(hash) for hash in oldhashes.split(b',')) |
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256 newhashes = tuple(bin(hash) for hash in newhashes.split(b',')) |
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257 return cls( |
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258 (timestamp, tz), |
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259 user, |
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260 command, |
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261 namespace, |
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262 name, |
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263 oldhashes, |
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264 newhashes, |
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265 ) |
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266 |
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267 def __bytes__(self): |
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268 """bytes representation for storage""" |
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269 time = b' '.join(map(pycompat.bytestr, self.timestamp)) |
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270 oldhashes = b','.join([hex(hash) for hash in self.oldhashes]) |
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271 newhashes = b','.join([hex(hash) for hash in self.newhashes]) |
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272 return b'\n'.join( |
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273 ( |
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274 time, |
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275 self.user, |
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276 self.command, |
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277 self.namespace, |
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278 self.name, |
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279 oldhashes, |
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280 newhashes, |
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281 ) |
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282 ) |
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283 |
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284 __str__ = encoding.strmethod(__bytes__) |
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285 |
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286 |
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287 class journalstorage(object): |
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288 """Storage for journal entries |
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289 |
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290 Entries are divided over two files; one with entries that pertain to the |
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291 local working copy *only*, and one with entries that are shared across |
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292 multiple working copies when shared using the share extension. |
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293 |
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294 Entries are stored with NUL bytes as separators. See the journalentry |
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295 class for the per-entry structure. |
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296 |
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297 The file format starts with an integer version, delimited by a NUL. |
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298 |
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299 This storage uses a dedicated lock; this makes it easier to avoid issues |
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300 with adding entries that added when the regular wlock is unlocked (e.g. |
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301 the dirstate). |
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302 |
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303 """ |
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304 |
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305 _currentcommand = () |
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306 _lockref = None |
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307 |
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308 def __init__(self, repo): |
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309 self.user = procutil.getuser() |
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310 self.ui = repo.ui |
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311 self.vfs = repo.vfs |
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312 |
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313 # is this working copy using a shared storage? |
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314 self.sharedfeatures = self.sharedvfs = None |
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315 if repo.shared(): |
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316 features = _readsharedfeatures(repo) |
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317 sharedrepo = hg.sharedreposource(repo) |
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318 if sharedrepo is not None and b'journal' in features: |
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319 self.sharedvfs = sharedrepo.vfs |
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320 self.sharedfeatures = features |
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321 |
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322 # track the current command for recording in journal entries |
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323 @property |
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324 def command(self): |
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325 commandstr = b' '.join( |
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326 map(procutil.shellquote, journalstorage._currentcommand) |
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327 ) |
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328 if b'\n' in commandstr: |
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329 # truncate multi-line commands |
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330 commandstr = commandstr.partition(b'\n')[0] + b' ...' |
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331 return commandstr |
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332 |
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333 @classmethod |
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334 def recordcommand(cls, *fullargs): |
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335 """Set the current hg arguments, stored with recorded entries""" |
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336 # Set the current command on the class because we may have started |
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337 # with a non-local repo (cloning for example). |
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338 cls._currentcommand = fullargs |
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339 |
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340 def _currentlock(self, lockref): |
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341 """Returns the lock if it's held, or None if it's not. |
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342 |
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343 (This is copied from the localrepo class) |
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344 """ |
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345 if lockref is None: |
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346 return None |
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347 l = lockref() |
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348 if l is None or not l.held: |
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349 return None |
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350 return l |
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351 |
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352 def jlock(self, vfs): |
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353 """Create a lock for the journal file""" |
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354 if self._currentlock(self._lockref) is not None: |
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355 raise error.Abort(_(b'journal lock does not support nesting')) |
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356 desc = _(b'journal of %s') % vfs.base |
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357 try: |
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358 l = lock.lock(vfs, b'namejournal.lock', 0, desc=desc) |
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359 except error.LockHeld as inst: |
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360 self.ui.warn( |
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361 _(b"waiting for lock on %s held by %r\n") % (desc, inst.locker) |
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362 ) |
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363 # default to 600 seconds timeout |
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364 l = lock.lock( |
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365 vfs, |
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366 b'namejournal.lock', |
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367 self.ui.configint(b"ui", b"timeout"), |
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368 desc=desc, |
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369 ) |
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370 self.ui.warn(_(b"got lock after %s seconds\n") % l.delay) |
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371 self._lockref = weakref.ref(l) |
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372 return l |
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373 |
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374 def record(self, namespace, name, oldhashes, newhashes): |
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375 """Record a new journal entry |
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376 |
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377 * namespace: an opaque string; this can be used to filter on the type |
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378 of recorded entries. |
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379 * name: the name defining this entry; for bookmarks, this is the |
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380 bookmark name. Can be filtered on when retrieving entries. |
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381 * oldhashes and newhashes: each a single binary hash, or a list of |
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382 binary hashes. These represent the old and new position of the named |
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383 item. |
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384 |
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385 """ |
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386 if not isinstance(oldhashes, list): |
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387 oldhashes = [oldhashes] |
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388 if not isinstance(newhashes, list): |
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389 newhashes = [newhashes] |
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390 |
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391 entry = journalentry( |
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392 dateutil.makedate(), |
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393 self.user, |
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394 self.command, |
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395 namespace, |
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396 name, |
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397 oldhashes, |
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398 newhashes, |
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399 ) |
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400 |
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401 vfs = self.vfs |
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402 if self.sharedvfs is not None: |
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403 # write to the shared repository if this feature is being |
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404 # shared between working copies. |
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405 if sharednamespaces.get(namespace) in self.sharedfeatures: |
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406 vfs = self.sharedvfs |
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407 |
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408 self._write(vfs, entry) |
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409 |
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410 def _write(self, vfs, entry): |
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411 with self.jlock(vfs): |
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412 # open file in amend mode to ensure it is created if missing |
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413 with vfs(b'namejournal', mode=b'a+b') as f: |
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414 f.seek(0, os.SEEK_SET) |
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415 # Read just enough bytes to get a version number (up to 2 |
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416 # digits plus separator) |
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417 version = f.read(3).partition(b'\0')[0] |
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418 if version and version != b"%d" % storageversion: |
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419 # different version of the storage. Exit early (and not |
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420 # write anything) if this is not a version we can handle or |
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421 # the file is corrupt. In future, perhaps rotate the file |
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422 # instead? |
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423 self.ui.warn( |
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424 _(b"unsupported journal file version '%s'\n") % version |
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425 ) |
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426 return |
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427 if not version: |
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428 # empty file, write version first |
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429 f.write((b"%d" % storageversion) + b'\0') |
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430 f.seek(0, os.SEEK_END) |
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431 f.write(bytes(entry) + b'\0') |
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432 |
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433 def filtered(self, namespace=None, name=None): |
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434 """Yield all journal entries with the given namespace or name |
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435 |
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436 Both the namespace and the name are optional; if neither is given all |
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437 entries in the journal are produced. |
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438 |
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439 Matching supports regular expressions by using the `re:` prefix |
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440 (use `literal:` to match names or namespaces that start with `re:`) |
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441 |
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442 """ |
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443 if namespace is not None: |
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444 namespace = stringutil.stringmatcher(namespace)[-1] |
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445 if name is not None: |
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446 name = stringutil.stringmatcher(name)[-1] |
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447 for entry in self: |
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448 if namespace is not None and not namespace(entry.namespace): |
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449 continue |
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450 if name is not None and not name(entry.name): |
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451 continue |
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452 yield entry |
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|
453 |
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454 def __iter__(self): |
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455 """Iterate over the storage |
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|
456 |
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457 Yields journalentry instances for each contained journal record. |
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|
458 |
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459 """ |
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460 local = self._open(self.vfs) |
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461 |
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462 if self.sharedvfs is None: |
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463 return local |
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|
464 |
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465 # iterate over both local and shared entries, but only those |
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466 # shared entries that are among the currently shared features |
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467 shared = ( |
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468 e |
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469 for e in self._open(self.sharedvfs) |
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470 if sharednamespaces.get(e.namespace) in self.sharedfeatures |
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471 ) |
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472 return _mergeentriesiter(local, shared) |
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473 |
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474 def _open(self, vfs, filename=b'namejournal', _newestfirst=True): |
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475 if not vfs.exists(filename): |
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476 return |
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|
477 |
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478 with vfs(filename) as f: |
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479 raw = f.read() |
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480 |
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481 lines = raw.split(b'\0') |
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482 version = lines and lines[0] |
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483 if version != b"%d" % storageversion: |
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484 version = version or _(b'not available') |
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485 raise error.Abort(_(b"unknown journal file version '%s'") % version) |
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486 |
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487 # Skip the first line, it's a version number. Normally we iterate over |
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488 # these in reverse order to list newest first; only when copying across |
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489 # a shared storage do we forgo reversing. |
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490 lines = lines[1:] |
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491 if _newestfirst: |
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492 lines = reversed(lines) |
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493 for line in lines: |
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494 if not line: |
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|
495 continue |
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496 yield journalentry.fromstorage(line) |
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497 |
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498 |
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499 # journal reading |
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|
500 # log options that don't make sense for journal |
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501 _ignoreopts = (b'no-merges', b'graph') |
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502 |
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503 |
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|
504 @command( |
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505 b'journal', |
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506 [ |
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507 (b'', b'all', None, b'show history for all names'), |
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508 (b'c', b'commits', None, b'show commit metadata'), |
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509 ] |
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510 + [opt for opt in cmdutil.logopts if opt[1] not in _ignoreopts], |
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511 b'[OPTION]... [BOOKMARKNAME]', |
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512 helpcategory=command.CATEGORY_CHANGE_ORGANIZATION, |
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513 ) |
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514 def journal(ui, repo, *args, **opts): |
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515 """show the previous position of bookmarks and the working copy |
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516 |
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517 The journal is used to see the previous commits that bookmarks and the |
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518 working copy pointed to. By default the previous locations for the working |
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519 copy. Passing a bookmark name will show all the previous positions of |
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520 that bookmark. Use the --all switch to show previous locations for all |
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521 bookmarks and the working copy; each line will then include the bookmark |
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522 name, or '.' for the working copy, as well. |
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523 |
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524 If `name` starts with `re:`, the remainder of the name is treated as |
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525 a regular expression. To match a name that actually starts with `re:`, |
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526 use the prefix `literal:`. |
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527 |
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528 By default hg journal only shows the commit hash and the command that was |
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529 running at that time. -v/--verbose will show the prior hash, the user, and |
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530 the time at which it happened. |
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531 |
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532 Use -c/--commits to output log information on each commit hash; at this |
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533 point you can use the usual `--patch`, `--git`, `--stat` and `--template` |
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534 switches to alter the log output for these. |
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535 |
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536 `hg journal -T json` can be used to produce machine readable output. |
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537 |
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538 """ |
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539 opts = pycompat.byteskwargs(opts) |
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540 name = b'.' |
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541 if opts.get(b'all'): |
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542 if args: |
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543 raise error.Abort( |
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544 _(b"You can't combine --all and filtering on a name") |
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545 ) |
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546 name = None |
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547 if args: |
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548 name = args[0] |
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549 |
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550 fm = ui.formatter(b'journal', opts) |
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551 |
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552 def formatnodes(nodes): |
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553 return fm.formatlist(map(fm.hexfunc, nodes), name=b'node', sep=b',') |
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554 |
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555 if opts.get(b"template") != b"json": |
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556 if name is None: |
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557 displayname = _(b'the working copy and bookmarks') |
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558 else: |
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559 displayname = b"'%s'" % name |
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560 ui.status(_(b"previous locations of %s:\n") % displayname) |
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561 |
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562 limit = logcmdutil.getlimit(opts) |
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563 entry = None |
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564 ui.pager(b'journal') |
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565 for count, entry in enumerate(repo.journal.filtered(name=name)): |
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566 if count == limit: |
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567 break |
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568 |
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569 fm.startitem() |
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570 fm.condwrite( |
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571 ui.verbose, b'oldnodes', b'%s -> ', formatnodes(entry.oldhashes) |
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572 ) |
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573 fm.write(b'newnodes', b'%s', formatnodes(entry.newhashes)) |
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574 fm.condwrite(ui.verbose, b'user', b' %-8s', entry.user) |
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575 fm.condwrite( |
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576 opts.get(b'all') or name.startswith(b're:'), |
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577 b'name', |
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578 b' %-8s', |
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579 entry.name, |
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580 ) |
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581 |
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582 fm.condwrite( |
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583 ui.verbose, |
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584 b'date', |
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585 b' %s', |
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586 fm.formatdate(entry.timestamp, b'%Y-%m-%d %H:%M %1%2'), |
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587 ) |
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588 fm.write(b'command', b' %s\n', entry.command) |
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589 |
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590 if opts.get(b"commits"): |
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591 if fm.isplain(): |
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592 displayer = logcmdutil.changesetdisplayer(ui, repo, opts) |
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593 else: |
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594 displayer = logcmdutil.changesetformatter( |
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595 ui, repo, fm.nested(b'changesets'), diffopts=opts |
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596 ) |
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597 for hash in entry.newhashes: |
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598 try: |
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599 ctx = repo[hash] |
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600 displayer.show(ctx) |
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601 except error.RepoLookupError as e: |
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602 fm.plain(b"%s\n\n" % pycompat.bytestr(e)) |
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603 displayer.close() |
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604 |
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605 fm.end() |
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606 |
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607 if entry is None: |
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608 ui.status(_(b"no recorded locations\n")) |