Mercurial > hg
annotate hgext/journal.py @ 34590:95f4e5b1ec92
configitems: register the 'web.maxchanges' config
author | Boris Feld <boris.feld@octobus.net> |
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date | Wed, 11 Oct 2017 03:41:48 +0200 |
parents | e6d421566906 |
children | 135edf120d76 |
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 |
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23 from mercurial import ( |
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24 bookmarks, |
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25 cmdutil, |
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26 dispatch, |
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27 error, |
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28 extensions, |
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29 hg, |
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30 localrepo, |
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31 lock, |
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32 node, |
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33 registrar, |
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34 util, |
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35 ) |
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36 |
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37 from . import share |
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38 |
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39 cmdtable = {} |
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40 command = registrar.command(cmdtable) |
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41 |
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42 # Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for |
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43 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should |
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44 # be specifying the version(s) of Mercurial they are tested with, or |
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45 # leave the attribute unspecified. |
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46 testedwith = 'ships-with-hg-core' |
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47 |
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48 # storage format version; increment when the format changes |
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49 storageversion = 0 |
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50 |
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51 # namespaces |
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52 bookmarktype = 'bookmark' |
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53 wdirparenttype = 'wdirparent' |
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54 # In a shared repository, what shared feature name is used |
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55 # to indicate this namespace is shared with the source? |
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56 sharednamespaces = { |
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57 bookmarktype: hg.sharedbookmarks, |
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58 } |
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59 |
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60 # Journal recording, register hooks and storage object |
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61 def extsetup(ui): |
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62 extensions.wrapfunction(dispatch, 'runcommand', runcommand) |
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63 extensions.wrapfunction(bookmarks.bmstore, '_write', recordbookmarks) |
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64 extensions.wrapfilecache( |
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65 localrepo.localrepository, 'dirstate', wrapdirstate) |
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66 extensions.wrapfunction(hg, 'postshare', wrappostshare) |
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67 extensions.wrapfunction(hg, 'copystore', unsharejournal) |
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68 |
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69 def reposetup(ui, repo): |
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70 if repo.local(): |
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71 repo.journal = journalstorage(repo) |
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72 repo._wlockfreeprefix.add('namejournal') |
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73 |
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74 dirstate, cached = localrepo.isfilecached(repo, 'dirstate') |
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75 if cached: |
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76 # already instantiated dirstate isn't yet marked as |
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77 # "journal"-ing, even though repo.dirstate() was already |
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78 # wrapped by own wrapdirstate() |
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79 _setupdirstate(repo, dirstate) |
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80 |
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81 def runcommand(orig, lui, repo, cmd, fullargs, *args): |
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82 """Track the command line options for recording in the journal""" |
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83 journalstorage.recordcommand(*fullargs) |
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84 return orig(lui, repo, cmd, fullargs, *args) |
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85 |
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86 def _setupdirstate(repo, dirstate): |
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87 dirstate.journalstorage = repo.journal |
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88 dirstate.addparentchangecallback('journal', recorddirstateparents) |
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89 |
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90 # hooks to record dirstate changes |
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91 def wrapdirstate(orig, repo): |
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92 """Make journal storage available to the dirstate object""" |
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93 dirstate = orig(repo) |
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94 if util.safehasattr(repo, 'journal'): |
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95 _setupdirstate(repo, dirstate) |
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96 return dirstate |
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97 |
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98 def recorddirstateparents(dirstate, old, new): |
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99 """Records all dirstate parent changes in the journal.""" |
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100 old = list(old) |
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101 new = list(new) |
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102 if util.safehasattr(dirstate, 'journalstorage'): |
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103 # only record two hashes if there was a merge |
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104 oldhashes = old[:1] if old[1] == node.nullid else old |
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105 newhashes = new[:1] if new[1] == node.nullid else new |
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106 dirstate.journalstorage.record( |
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107 wdirparenttype, '.', oldhashes, newhashes) |
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108 |
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109 # hooks to record bookmark changes (both local and remote) |
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110 def recordbookmarks(orig, store, fp): |
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111 """Records all bookmark changes in the journal.""" |
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112 repo = store._repo |
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113 if util.safehasattr(repo, 'journal'): |
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114 oldmarks = bookmarks.bmstore(repo) |
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115 for mark, value in store.iteritems(): |
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116 oldvalue = oldmarks.get(mark, node.nullid) |
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117 if value != oldvalue: |
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118 repo.journal.record(bookmarktype, mark, oldvalue, value) |
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119 return orig(store, fp) |
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120 |
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121 # shared repository support |
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122 def _readsharedfeatures(repo): |
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123 """A set of shared features for this repository""" |
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124 try: |
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125 return set(repo.vfs.read('shared').splitlines()) |
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126 except IOError as inst: |
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127 if inst.errno != errno.ENOENT: |
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128 raise |
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129 return set() |
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130 |
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131 def _mergeentriesiter(*iterables, **kwargs): |
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132 """Given a set of sorted iterables, yield the next entry in merged order |
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133 |
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134 Note that by default entries go from most recent to oldest. |
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135 """ |
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136 order = kwargs.pop('order', max) |
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137 iterables = [iter(it) for it in iterables] |
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138 # this tracks still active iterables; iterables are deleted as they are |
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139 # exhausted, which is why this is a dictionary and why each entry also |
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140 # stores the key. Entries are mutable so we can store the next value each |
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141 # time. |
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142 iterable_map = {} |
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143 for key, it in enumerate(iterables): |
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144 try: |
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145 iterable_map[key] = [next(it), key, it] |
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146 except StopIteration: |
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147 # empty entry, can be ignored |
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148 pass |
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149 |
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150 while iterable_map: |
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151 value, key, it = order(iterable_map.itervalues()) |
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152 yield value |
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153 try: |
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154 iterable_map[key][0] = next(it) |
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155 except StopIteration: |
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156 # this iterable is empty, remove it from consideration |
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157 del iterable_map[key] |
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158 |
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159 def wrappostshare(orig, sourcerepo, destrepo, **kwargs): |
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160 """Mark this shared working copy as sharing journal information""" |
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161 with destrepo.wlock(): |
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162 orig(sourcerepo, destrepo, **kwargs) |
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163 with destrepo.vfs('shared', 'a') as fp: |
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164 fp.write('journal\n') |
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165 |
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166 def unsharejournal(orig, ui, repo, repopath): |
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167 """Copy shared journal entries into this repo when unsharing""" |
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168 if (repo.path == repopath and repo.shared() and |
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169 util.safehasattr(repo, 'journal')): |
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170 sharedrepo = share._getsrcrepo(repo) |
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171 sharedfeatures = _readsharedfeatures(repo) |
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172 if sharedrepo and sharedfeatures > {'journal'}: |
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173 # there is a shared repository and there are shared journal entries |
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174 # to copy. move shared date over from source to destination but |
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175 # move the local file first |
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176 if repo.vfs.exists('namejournal'): |
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177 journalpath = repo.vfs.join('namejournal') |
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178 util.rename(journalpath, journalpath + '.bak') |
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179 storage = repo.journal |
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180 local = storage._open( |
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181 repo.vfs, filename='namejournal.bak', _newestfirst=False) |
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182 shared = ( |
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183 e for e in storage._open(sharedrepo.vfs, _newestfirst=False) |
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184 if sharednamespaces.get(e.namespace) in sharedfeatures) |
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185 for entry in _mergeentriesiter(local, shared, order=min): |
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186 storage._write(repo.vfs, entry) |
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187 |
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188 return orig(ui, repo, repopath) |
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189 |
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190 class journalentry(collections.namedtuple( |
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191 u'journalentry', |
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192 u'timestamp user command namespace name oldhashes newhashes')): |
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193 """Individual journal entry |
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194 |
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195 * timestamp: a mercurial (time, timezone) tuple |
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196 * user: the username that ran the command |
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197 * namespace: the entry namespace, an opaque string |
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198 * name: the name of the changed item, opaque string with meaning in the |
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199 namespace |
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200 * command: the hg command that triggered this record |
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201 * oldhashes: a tuple of one or more binary hashes for the old location |
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202 * newhashes: a tuple of one or more binary hashes for the new location |
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203 |
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204 Handles serialisation from and to the storage format. Fields are |
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205 separated by newlines, hashes are written out in hex separated by commas, |
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206 timestamp and timezone are separated by a space. |
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207 |
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208 """ |
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209 @classmethod |
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210 def fromstorage(cls, line): |
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211 (time, user, command, namespace, name, |
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212 oldhashes, newhashes) = line.split('\n') |
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213 timestamp, tz = time.split() |
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214 timestamp, tz = float(timestamp), int(tz) |
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215 oldhashes = tuple(node.bin(hash) for hash in oldhashes.split(',')) |
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216 newhashes = tuple(node.bin(hash) for hash in newhashes.split(',')) |
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217 return cls( |
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218 (timestamp, tz), user, command, namespace, name, |
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219 oldhashes, newhashes) |
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220 |
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221 def __str__(self): |
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222 """String representation for storage""" |
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223 time = ' '.join(map(str, self.timestamp)) |
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224 oldhashes = ','.join([node.hex(hash) for hash in self.oldhashes]) |
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225 newhashes = ','.join([node.hex(hash) for hash in self.newhashes]) |
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226 return '\n'.join(( |
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227 time, self.user, self.command, self.namespace, self.name, |
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228 oldhashes, newhashes)) |
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229 |
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230 class journalstorage(object): |
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231 """Storage for journal entries |
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232 |
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233 Entries are divided over two files; one with entries that pertain to the |
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234 local working copy *only*, and one with entries that are shared across |
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235 multiple working copies when shared using the share extension. |
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236 |
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237 Entries are stored with NUL bytes as separators. See the journalentry |
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238 class for the per-entry structure. |
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239 |
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240 The file format starts with an integer version, delimited by a NUL. |
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241 |
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242 This storage uses a dedicated lock; this makes it easier to avoid issues |
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243 with adding entries that added when the regular wlock is unlocked (e.g. |
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244 the dirstate). |
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245 |
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246 """ |
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247 _currentcommand = () |
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248 _lockref = None |
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249 |
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250 def __init__(self, repo): |
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251 self.user = util.getuser() |
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252 self.ui = repo.ui |
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253 self.vfs = repo.vfs |
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254 |
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255 # is this working copy using a shared storage? |
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256 self.sharedfeatures = self.sharedvfs = None |
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257 if repo.shared(): |
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258 features = _readsharedfeatures(repo) |
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259 sharedrepo = share._getsrcrepo(repo) |
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260 if sharedrepo is not None and 'journal' in features: |
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261 self.sharedvfs = sharedrepo.vfs |
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262 self.sharedfeatures = features |
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263 |
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264 # track the current command for recording in journal entries |
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265 @property |
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266 def command(self): |
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267 commandstr = ' '.join( |
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268 map(util.shellquote, journalstorage._currentcommand)) |
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269 if '\n' in commandstr: |
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270 # truncate multi-line commands |
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271 commandstr = commandstr.partition('\n')[0] + ' ...' |
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272 return commandstr |
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273 |
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274 @classmethod |
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275 def recordcommand(cls, *fullargs): |
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276 """Set the current hg arguments, stored with recorded entries""" |
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277 # Set the current command on the class because we may have started |
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278 # with a non-local repo (cloning for example). |
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279 cls._currentcommand = fullargs |
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280 |
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281 def _currentlock(self, lockref): |
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282 """Returns the lock if it's held, or None if it's not. |
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283 |
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284 (This is copied from the localrepo class) |
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285 """ |
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286 if lockref is None: |
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287 return None |
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288 l = lockref() |
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289 if l is None or not l.held: |
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290 return None |
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291 return l |
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292 |
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293 def jlock(self, vfs): |
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294 """Create a lock for the journal file""" |
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295 if self._currentlock(self._lockref) is not None: |
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296 raise error.Abort(_('journal lock does not support nesting')) |
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297 desc = _('journal of %s') % vfs.base |
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298 try: |
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299 l = lock.lock(vfs, 'namejournal.lock', 0, desc=desc) |
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300 except error.LockHeld as inst: |
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301 self.ui.warn( |
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302 _("waiting for lock on %s held by %r\n") % (desc, inst.locker)) |
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303 # default to 600 seconds timeout |
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304 l = lock.lock( |
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305 vfs, 'namejournal.lock', |
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306 int(self.ui.config("ui", "timeout")), desc=desc) |
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307 self.ui.warn(_("got lock after %s seconds\n") % l.delay) |
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308 self._lockref = weakref.ref(l) |
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309 return l |
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310 |
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311 def record(self, namespace, name, oldhashes, newhashes): |
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312 """Record a new journal entry |
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313 |
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314 * namespace: an opaque string; this can be used to filter on the type |
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315 of recorded entries. |
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316 * name: the name defining this entry; for bookmarks, this is the |
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317 bookmark name. Can be filtered on when retrieving entries. |
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318 * oldhashes and newhashes: each a single binary hash, or a list of |
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319 binary hashes. These represent the old and new position of the named |
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320 item. |
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321 |
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322 """ |
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323 if not isinstance(oldhashes, list): |
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324 oldhashes = [oldhashes] |
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325 if not isinstance(newhashes, list): |
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326 newhashes = [newhashes] |
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327 |
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328 entry = journalentry( |
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329 util.makedate(), self.user, self.command, namespace, name, |
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330 oldhashes, newhashes) |
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331 |
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332 vfs = self.vfs |
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333 if self.sharedvfs is not None: |
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334 # write to the shared repository if this feature is being |
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335 # shared between working copies. |
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336 if sharednamespaces.get(namespace) in self.sharedfeatures: |
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337 vfs = self.sharedvfs |
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338 |
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339 self._write(vfs, entry) |
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340 |
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341 def _write(self, vfs, entry): |
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342 with self.jlock(vfs): |
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343 version = None |
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344 # open file in amend mode to ensure it is created if missing |
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345 with vfs('namejournal', mode='a+b') as f: |
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346 f.seek(0, os.SEEK_SET) |
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347 # Read just enough bytes to get a version number (up to 2 |
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348 # digits plus separator) |
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349 version = f.read(3).partition('\0')[0] |
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350 if version and version != str(storageversion): |
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351 # different version of the storage. Exit early (and not |
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352 # write anything) if this is not a version we can handle or |
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353 # the file is corrupt. In future, perhaps rotate the file |
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354 # instead? |
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355 self.ui.warn( |
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356 _("unsupported journal file version '%s'\n") % version) |
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357 return |
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358 if not version: |
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359 # empty file, write version first |
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360 f.write(str(storageversion) + '\0') |
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361 f.seek(0, os.SEEK_END) |
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362 f.write(str(entry) + '\0') |
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363 |
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364 def filtered(self, namespace=None, name=None): |
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365 """Yield all journal entries with the given namespace or name |
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366 |
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367 Both the namespace and the name are optional; if neither is given all |
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368 entries in the journal are produced. |
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369 |
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370 Matching supports regular expressions by using the `re:` prefix |
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371 (use `literal:` to match names or namespaces that start with `re:`) |
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372 |
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373 """ |
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374 if namespace is not None: |
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375 namespace = util.stringmatcher(namespace)[-1] |
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376 if name is not None: |
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377 name = util.stringmatcher(name)[-1] |
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378 for entry in self: |
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379 if namespace is not None and not namespace(entry.namespace): |
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380 continue |
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381 if name is not None and not name(entry.name): |
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382 continue |
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383 yield entry |
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384 |
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385 def __iter__(self): |
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386 """Iterate over the storage |
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387 |
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388 Yields journalentry instances for each contained journal record. |
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diff
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389 |
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390 """ |
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391 local = self._open(self.vfs) |
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|
392 |
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|
393 if self.sharedvfs is None: |
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|
394 return local |
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|
395 |
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396 # iterate over both local and shared entries, but only those |
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397 # shared entries that are among the currently shared features |
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398 shared = ( |
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399 e for e in self._open(self.sharedvfs) |
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400 if sharednamespaces.get(e.namespace) in self.sharedfeatures) |
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401 return _mergeentriesiter(local, shared) |
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|
402 |
29870
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journal: rename on disk files to 'namejournal'
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
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|
403 def _open(self, vfs, filename='namejournal', _newestfirst=True): |
29503
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parents:
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404 if not vfs.exists(filename): |
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parents:
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405 return |
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parents:
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|
406 |
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407 with vfs(filename) as f: |
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408 raw = f.read() |
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|
409 |
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parents:
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410 lines = raw.split('\0') |
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parents:
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411 version = lines and lines[0] |
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parents:
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412 if version != str(storageversion): |
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413 version = version or _('not available') |
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414 raise error.Abort(_("unknown journal file version '%s'") % version) |
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|
415 |
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416 # Skip the first line, it's a version number. Normally we iterate over |
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417 # these in reverse order to list newest first; only when copying across |
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418 # a shared storage do we forgo reversing. |
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419 lines = lines[1:] |
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420 if _newestfirst: |
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421 lines = reversed(lines) |
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422 for line in lines: |
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423 if not line: |
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|
424 continue |
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425 yield journalentry.fromstorage(line) |
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|
426 |
cf092a3d202a
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diff
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427 # journal reading |
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|
428 # log options that don't make sense for journal |
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429 _ignoreopts = ('no-merges', 'graph') |
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430 @command( |
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431 'journal', [ |
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432 ('', 'all', None, 'show history for all names'), |
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433 ('c', 'commits', None, 'show commit metadata'), |
32375
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commands: move templates of common command options to cmdutil (API)
Yuya Nishihara <yuya@tcha.org>
parents:
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|
434 ] + [opt for opt in cmdutil.logopts if opt[1] not in _ignoreopts], |
29443
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435 '[OPTION]... [BOOKMARKNAME]') |
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|
436 def journal(ui, repo, *args, **opts): |
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437 """show the previous position of bookmarks and the working copy |
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|
438 |
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439 The journal is used to see the previous commits that bookmarks and the |
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440 working copy pointed to. By default the previous locations for the working |
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441 copy. Passing a bookmark name will show all the previous positions of |
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442 that bookmark. Use the --all switch to show previous locations for all |
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443 bookmarks and the working copy; each line will then include the bookmark |
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diff
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444 name, or '.' for the working copy, as well. |
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445 |
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446 If `name` starts with `re:`, the remainder of the name is treated as |
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447 a regular expression. To match a name that actually starts with `re:`, |
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diff
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|
448 use the prefix `literal:`. |
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diff
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|
449 |
29443
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diff
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|
450 By default hg journal only shows the commit hash and the command that was |
cf092a3d202a
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parents:
diff
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|
451 running at that time. -v/--verbose will show the prior hash, the user, and |
cf092a3d202a
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parents:
diff
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|
452 the time at which it happened. |
cf092a3d202a
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diff
changeset
|
453 |
cf092a3d202a
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parents:
diff
changeset
|
454 Use -c/--commits to output log information on each commit hash; at this |
cf092a3d202a
journal: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
455 point you can use the usual `--patch`, `--git`, `--stat` and `--template` |
cf092a3d202a
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
456 switches to alter the log output for these. |
cf092a3d202a
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parents:
diff
changeset
|
457 |
cf092a3d202a
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diff
changeset
|
458 `hg journal -T json` can be used to produce machine readable output. |
cf092a3d202a
journal: new experimental extension
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parents:
diff
changeset
|
459 |
cf092a3d202a
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parents:
diff
changeset
|
460 """ |
29502
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|
461 name = '.' |
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|
462 if opts.get('all'): |
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parents:
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diff
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|
463 if args: |
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diff
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|
464 raise error.Abort( |
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diff
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|
465 _("You can't combine --all and filtering on a name")) |
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diff
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|
466 name = None |
29443
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|
467 if args: |
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diff
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|
468 name = args[0] |
29443
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parents:
diff
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|
469 |
cf092a3d202a
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
470 fm = ui.formatter('journal', opts) |
cf092a3d202a
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parents:
diff
changeset
|
471 |
cf092a3d202a
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parents:
diff
changeset
|
472 if opts.get("template") != "json": |
29502
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diff
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|
473 if name is None: |
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diff
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|
474 displayname = _('the working copy and bookmarks') |
29443
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|
475 else: |
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diff
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|
476 displayname = "'%s'" % name |
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parents:
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diff
changeset
|
477 ui.status(_("previous locations of %s:\n") % displayname) |
29443
cf092a3d202a
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parents:
diff
changeset
|
478 |
cf092a3d202a
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parents:
diff
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|
479 limit = cmdutil.loglimit(opts) |
cf092a3d202a
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parents:
diff
changeset
|
480 entry = None |
29502
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diff
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|
481 for count, entry in enumerate(repo.journal.filtered(name=name)): |
29443
cf092a3d202a
journal: new experimental extension
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parents:
diff
changeset
|
482 if count == limit: |
cf092a3d202a
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parents:
diff
changeset
|
483 break |
29677
69890b5dd32b
journal: use fm.formatlist() to pass hashes in appropriate type (BC)
Yuya Nishihara <yuya@tcha.org>
parents:
29675
diff
changeset
|
484 newhashesstr = fm.formatlist(map(fm.hexfunc, entry.newhashes), |
69890b5dd32b
journal: use fm.formatlist() to pass hashes in appropriate type (BC)
Yuya Nishihara <yuya@tcha.org>
parents:
29675
diff
changeset
|
485 name='node', sep=',') |
69890b5dd32b
journal: use fm.formatlist() to pass hashes in appropriate type (BC)
Yuya Nishihara <yuya@tcha.org>
parents:
29675
diff
changeset
|
486 oldhashesstr = fm.formatlist(map(fm.hexfunc, entry.oldhashes), |
69890b5dd32b
journal: use fm.formatlist() to pass hashes in appropriate type (BC)
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parents:
29675
diff
changeset
|
487 name='node', sep=',') |
29443
cf092a3d202a
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parents:
diff
changeset
|
488 |
cf092a3d202a
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parents:
diff
changeset
|
489 fm.startitem() |
cf092a3d202a
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parents:
diff
changeset
|
490 fm.condwrite(ui.verbose, 'oldhashes', '%s -> ', oldhashesstr) |
cf092a3d202a
journal: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
491 fm.write('newhashes', '%s', newhashesstr) |
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diff
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|
492 fm.condwrite(ui.verbose, 'user', ' %-8s', entry.user) |
29504
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diff
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|
493 fm.condwrite( |
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diff
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|
494 opts.get('all') or name.startswith('re:'), |
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diff
changeset
|
495 'name', ' %-8s', entry.name) |
29443
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parents:
diff
changeset
|
496 |
29679
e54bdd3aa23b
journal: use fm.formatdate() to pass date tuple in appropriate type (BC)
Yuya Nishihara <yuya@tcha.org>
parents:
29677
diff
changeset
|
497 timestring = fm.formatdate(entry.timestamp, '%Y-%m-%d %H:%M %1%2') |
29443
cf092a3d202a
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parents:
diff
changeset
|
498 fm.condwrite(ui.verbose, 'date', ' %s', timestring) |
cf092a3d202a
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parents:
diff
changeset
|
499 fm.write('command', ' %s\n', entry.command) |
cf092a3d202a
journal: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
500 |
cf092a3d202a
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
501 if opts.get("commits"): |
cf092a3d202a
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parents:
diff
changeset
|
502 displayer = cmdutil.show_changeset(ui, repo, opts, buffered=False) |
cf092a3d202a
journal: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
503 for hash in entry.newhashes: |
cf092a3d202a
journal: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
504 try: |
cf092a3d202a
journal: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
505 ctx = repo[hash] |
cf092a3d202a
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parents:
diff
changeset
|
506 displayer.show(ctx) |
cf092a3d202a
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Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
507 except error.RepoLookupError as e: |
cf092a3d202a
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parents:
diff
changeset
|
508 fm.write('repolookuperror', "%s\n\n", str(e)) |
cf092a3d202a
journal: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
509 displayer.close() |
cf092a3d202a
journal: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
510 |
cf092a3d202a
journal: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
511 fm.end() |
cf092a3d202a
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parents:
diff
changeset
|
512 |
cf092a3d202a
journal: new experimental extension
Martijn Pieters <mjpieters@fb.com>
parents:
diff
changeset
|
513 if entry is None: |
cf092a3d202a
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parents:
diff
changeset
|
514 ui.status(_("no recorded locations\n")) |