annotate mercurial/logexchange.py @ 36705:c6901665cd5b

py3: make sure __repr__ returns a str # skip-blame because just r'' prefix Differential Revision: https://phab.mercurial-scm.org/D2652
author Pulkit Goyal <7895pulkit@gmail.com>
date Sun, 04 Mar 2018 22:40:33 +0530
parents 62a428bf6359
children 1ccd75027abb
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 # logexchange.py
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2 #
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3 # Copyright 2017 Augie Fackler <raf@durin42.com>
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4 # Copyright 2017 Sean Farley <sean@farley.io>
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5 #
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6 # This software may be used and distributed according to the terms of the
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7 # GNU General Public License version 2 or any later version.
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8
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9 from __future__ import absolute_import
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10
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11 from .node import hex
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12
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13 from . import (
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14 util,
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15 vfs as vfsmod,
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16 )
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17
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18 # directory name in .hg/ in which remotenames files will be present
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19 remotenamedir = 'logexchange'
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20
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21 def readremotenamefile(repo, filename):
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22 """
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23 reads a file from .hg/logexchange/ directory and yields it's content
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24 filename: the file to be read
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25 yield a tuple (node, remotepath, name)
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26 """
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27
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28 vfs = vfsmod.vfs(repo.vfs.join(remotenamedir))
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29 if not vfs.exists(filename):
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30 return
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31 f = vfs(filename)
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32 lineno = 0
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33 for line in f:
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34 line = line.strip()
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35 if not line:
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36 continue
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37 # contains the version number
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38 if lineno == 0:
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39 lineno += 1
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40 try:
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41 node, remote, rname = line.split('\0')
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42 yield node, remote, rname
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43 except ValueError:
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44 pass
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45
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46 f.close()
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47
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48 def readremotenames(repo):
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49 """
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50 read the details about the remotenames stored in .hg/logexchange/ and
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51 yields a tuple (node, remotepath, name). It does not yields information
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52 about whether an entry yielded is branch or bookmark. To get that
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53 information, call the respective functions.
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54 """
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55
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56 for bmentry in readremotenamefile(repo, 'bookmarks'):
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57 yield bmentry
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58 for branchentry in readremotenamefile(repo, 'branches'):
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59 yield branchentry
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60
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61 def writeremotenamefile(repo, remotepath, names, nametype):
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62 vfs = vfsmod.vfs(repo.vfs.join(remotenamedir))
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63 f = vfs(nametype, 'w', atomictemp=True)
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64 # write the storage version info on top of file
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65 # version '0' represents the very initial version of the storage format
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66 f.write('0\n\n')
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67
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68 olddata = set(readremotenamefile(repo, nametype))
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69 # re-save the data from a different remote than this one.
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70 for node, oldpath, rname in sorted(olddata):
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71 if oldpath != remotepath:
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72 f.write('%s\0%s\0%s\n' % (node, oldpath, rname))
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73
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74 for name, node in sorted(names.iteritems()):
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75 if nametype == "branches":
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76 for n in node:
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77 f.write('%s\0%s\0%s\n' % (n, remotepath, name))
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78 elif nametype == "bookmarks":
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79 if node:
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80 f.write('%s\0%s\0%s\n' % (node, remotepath, name))
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81
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82 f.close()
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83
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84 def saveremotenames(repo, remotepath, branches=None, bookmarks=None):
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85 """
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86 save remotenames i.e. remotebookmarks and remotebranches in their
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87 respective files under ".hg/logexchange/" directory.
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88 """
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89 wlock = repo.wlock()
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90 try:
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91 if bookmarks:
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92 writeremotenamefile(repo, remotepath, bookmarks, 'bookmarks')
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93 if branches:
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94 writeremotenamefile(repo, remotepath, branches, 'branches')
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95 finally:
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96 wlock.release()
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97
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98 def activepath(repo, remote):
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99 """returns remote path"""
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100 local = None
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101 # is the remote a local peer
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102 local = remote.local()
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103
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104 # determine the remote path from the repo, if possible; else just
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105 # use the string given to us
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106 rpath = remote
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107 if local:
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108 rpath = remote._repo.root
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109 elif not isinstance(remote, str):
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110 rpath = remote._url
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111
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112 # represent the remotepath with user defined path name if exists
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113 for path, url in repo.ui.configitems('paths'):
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114 # remove auth info from user defined url
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115 url = util.removeauth(url)
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116 if url == rpath:
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117 rpath = path
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118 break
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119
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120 return rpath
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121
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122 def pullremotenames(localrepo, remoterepo):
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123 """
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124 pulls bookmarks and branches information of the remote repo during a
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125 pull or clone operation.
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126 localrepo is our local repository
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127 remoterepo is the peer instance
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128 """
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129 remotepath = activepath(localrepo, remoterepo)
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130 bookmarks = remoterepo.listkeys('bookmarks')
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131 # on a push, we don't want to keep obsolete heads since
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132 # they won't show up as heads on the next pull, so we
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133 # remove them here otherwise we would require the user
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134 # to issue a pull to refresh the storage
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135 bmap = {}
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136 repo = localrepo.unfiltered()
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137 for branch, nodes in remoterepo.branchmap().iteritems():
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138 bmap[branch] = []
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139 for node in nodes:
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140 if node in repo and not repo[node].obsolete():
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141 bmap[branch].append(hex(node))
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142
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143 saveremotenames(localrepo, remotepath, bmap, bookmarks)