annotate MoinMoin/action/SyncPages.py @ 1304:f103cf7c371e

Detect renamed pages. Changed the getDiff interface.
author Alexander Schremmer <alex AT alexanderweb DOT de>
date Thu, 17 Aug 2006 00:00:57 +0200
parents a0b8e78621d0
children a36c70e5f0dd
rev   line source
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1 # -*- coding: iso-8859-1 -*-
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2 """
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3 MoinMoin - SyncPages action
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4
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5 This action allows you to synchronise pages of two wikis.
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6
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7 @copyright: 2006 MoinMoin:AlexanderSchremmer
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8 @license: GNU GPL, see COPYING for details.
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9 """
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10
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11 import os
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12 import re
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13 import xmlrpclib
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14
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15 # Compatiblity to Python 2.3
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16 try:
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17 set
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18 except NameError:
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19 from sets import Set as set
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20
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21
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22 from MoinMoin import wikiutil, config, user
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23 from MoinMoin.packages import unpackLine, packLine
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24 from MoinMoin.PageEditor import PageEditor, conflict_markers
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25 from MoinMoin.Page import Page
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26 from MoinMoin.wikidicts import Dict, Group
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27 from MoinMoin.wikisync import TagStore, UnsupportedWikiException, SyncPage
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28 from MoinMoin.wikisync import MoinLocalWiki, MoinRemoteWiki, UP, DOWN, BOTH, MIMETYPE_MOIN
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29 from MoinMoin.util.bdiff import decompress, patch, compress, textdiff
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30 from MoinMoin.util import diff3
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31
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32
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33 # map sync directions
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34 directions_map = {"up": UP, "down": DOWN, "both": BOTH}
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35
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36
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37 class ActionStatus(Exception): pass
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38
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39
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40 class ActionClass:
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41 INFO, WARN, ERROR = range(3) # used for logging
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42
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43 def __init__(self, pagename, request):
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44 self.request = request
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45 self.pagename = pagename
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46 self.page = Page(request, pagename)
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47 self.status = []
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48 request.flush()
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49
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50 def log_status(self, level, message):
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51 """ Appends the message with a given importance level to the internal log. """
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52 self.status.append((level, message))
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53
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54 def parse_page(self):
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55 """ Parses the parameter page and returns the read arguments. """
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56 options = {
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57 "remotePrefix": "",
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58 "localPrefix": "",
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59 "remoteWiki": "",
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60 "pageMatch": None,
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61 "pageList": None,
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62 "groupList": None,
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63 "direction": "foo", # is defaulted below
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64 }
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65
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66 options.update(Dict(self.request, self.pagename).get_dict())
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67
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68 # Convert page and group list strings to lists
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69 if options["pageList"] is not None:
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70 options["pageList"] = unpackLine(options["pageList"], ",")
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71 if options["groupList"] is not None:
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72 options["groupList"] = unpackLine(options["groupList"], ",")
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73
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74 options["direction"] = directions_map.get(options["direction"].lower(), BOTH)
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75
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76 return options
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78 def fix_params(self, params):
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79 """ Does some fixup on the parameters. """
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80
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81 # merge the pageList case into the pageMatch case
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82 if params["pageList"] is not None:
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83 params["pageMatch"] = u'|'.join([r'^%s$' % re.escape(name)
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84 for name in params["pageList"]])
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85
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86 if params["pageMatch"] is not None:
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87 params["pageMatch"] = re.compile(params["pageMatch"], re.U)
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88
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89 # we do not support matching or listing pages if there is a group of pages
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90 if params["groupList"]:
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91 params["pageMatch"] = None
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92 params["pageList"] = None
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93
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94 return params
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95
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96 def render(self):
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97 """ Render action
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98
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99 This action returns a status message.
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100 """
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101 _ = self.request.getText
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102
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103 params = self.fix_params(self.parse_page())
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104
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105 try:
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106 if params["direction"] == UP:
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107 raise ActionStatus(_("The only supported directions are BOTH and DOWN."))
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108
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109 if not self.request.cfg.interwikiname:
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110 raise ActionStatus(_("Please set an interwikiname in your wikiconfig (see HelpOnConfiguration) to be able to use this action."))
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111
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112 if not params["remoteWiki"]:
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113 raise ActionStatus(_("Incorrect parameters. Please supply at least the ''remoteWiki'' parameter."))
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114
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115 local = MoinLocalWiki(self.request, params["localPrefix"], params["pageList"])
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116 try:
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117 remote = MoinRemoteWiki(self.request, params["remoteWiki"], params["remotePrefix"], params["pageList"])
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118 except UnsupportedWikiException, (msg, ):
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119 raise ActionStatus(msg)
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120
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121 if not remote.valid:
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122 raise ActionStatus(_("The ''remoteWiki'' is unknown."))
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123
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124 self.sync(params, local, remote)
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125 except ActionStatus, e:
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126 msg = u'<p class="error">%s</p><p>%s</p>\n' % (e.args[0], repr(self.status))
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127 else:
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128 msg = u"%s<p>%s</p>" % (_("Syncronisation finished."), repr(self.status))
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129
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130 # XXX append self.status to the job page
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131 return self.page.send_page(self.request, msg=msg)
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132
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133 def sync(self, params, local, remote):
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134 """ This method does the syncronisation work.
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135 Currently, it handles the case where the pages exist on both sides.
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136 One of the major missing parts is rename handling.
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137 Now there are a few other cases left that have to be implemented:
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138 Wiki A | Wiki B | Remark
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139 ----------+----------+------------------------------
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140 exists | deleted | In this case, we do a normal merge if there
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141 | | are no tags. If there were changes in
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142 | | Wiki A, there is a merge with a conflict.
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143 | | Otherwise (no changes past last merge),
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144 | | the page is deleted in Wiki A.
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145 | | This needs static info that could be
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146 | | transferred with the pagelist.
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147 ----------+----------+-------------------------------
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148 exists | non- | Now the wiki knows that the page was renamed.
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149 with tags | existant | There should be an RPC method that asks
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150 | | for the new name (which could be recorded
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151 | | on page rename). Then the page is
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152 | | renamed in Wiki A as well and the sync
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153 | | is done normally.
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154 | | Every wiki retains a dict that maps
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155 | | (IWID, oldname) => newname and that is
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156 | | updated on every rename. oldname refers
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157 | | to the pagename known by the old wiki (can be
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158 | | gathered from tags).
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159 ----------+----------+-------------------------------
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160 exists | any case | Try a rename search first, then
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161 | | do a sync without considering tags
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162 with tags | with non | to ensure data integrity.
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163 | matching | Hmm, how do we detect this
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164 | tags | case if the unmatching tags are only on the remote side?
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165 ----------+----------+-------------------------------
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166 exists | exists | already handled.
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167 """
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168 _ = self.request.getText
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169 direction = params["direction"]
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170 local_full_iwid = packLine([local.get_iwid(), local.get_interwiki_name()])
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171 remote_full_iwid = packLine([remote.get_iwid(), remote.get_interwiki_name()])
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172
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173 l_pages = local.get_pages()
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174 r_pages = remote.get_pages(exclude_non_writable=direction != DOWN)
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175
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176 if params["groupList"]:
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177 pages_from_groupList = set(local.getGroupItems(params["groupList"]))
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178 r_pages = SyncPage.filter(r_pages, pages_from_groupList.__contains__)
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179 l_pages = SyncPage.filter(l_pages, pages_from_groupList.__contains__)
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180
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181 m_pages = [elem.add_missing_pagename(local, remote) for elem in SyncPage.merge(l_pages, r_pages)]
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182
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183 self.log_status(self.INFO, "Got %i local, %i remote pages, %i merged pages" % (len(l_pages), len(r_pages), len(m_pages))) # XXX remove?
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184
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185 if params["pageMatch"]:
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186 m_pages = SyncPage.filter(m_pages, params["pageMatch"].match)
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187 self.log_status(self.INFO, "After filtering: Got %i merges pages" % (len(m_pages), )) # XXX remove
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188
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189 on_both_sides = list(SyncPage.iter_local_and_remote(m_pages))
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190 remote_but_not_local = list(SyncPage.iter_remote_only(m_pages))
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191 local_but_not_remote = list(SyncPage.iter_local_only(m_pages))
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192
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193 # some initial test code (XXX remove)
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194 #r_new_pages = u", ".join([unicode(x) for x in remote_but_not_local])
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195 #l_new_pages = u", ".join([unicode(x) for x in local_but_not_remote])
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196 #raise ActionStatus("These pages are in the remote wiki, but not local: " + wikiutil.escape(r_new_pages) + "<br>These pages are in the local wiki, but not in the remote one: " + wikiutil.escape(l_new_pages))
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197
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198 # let's do the simple case first, can be refactored later to match all cases
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199 # XXX handle deleted pages
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200 for rp in on_both_sides:
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201 # XXX add locking, acquire read-lock on rp
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202 #print "Processing %r" % rp
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203
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204 local_pagename = rp.local_name
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205 current_page = PageEditor(self.request, local_pagename) # YYY direct access
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206 current_rev = current_page.get_real_rev()
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207
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208 tags = TagStore(current_page)
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209 if direction == BOTH:
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210 match_direction = direction
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211 else:
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212 match_direction = None
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213 matching_tags = tags.fetch(iwid_full=remote.iwid_full,direction=match_direction)
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214 matching_tags.sort()
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215 #print "------ TAGS: " + repr(matching_tags) + repr(tags.tags)
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216
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217 # some default values for non matching tags
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218 normalised_name = None
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219 remote_rev = None
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220 local_rev = rp.local_rev # merge against the newest version
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221 old_contents = ""
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222
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223 if matching_tags:
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224 newest_tag = matching_tags[-1]
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225
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226 # handle some cases where we cannot continue for this page
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227 if newest_tag.remote_rev == rp.remote_rev and (direction == DOWN or newest_tag.current_rev == current_rev):
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228 continue # no changes done, next page
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229 if rp.local_mime_type != MIMETYPE_MOIN and not (newest_tag.remote_rev == rp.remote_rev ^ newest_tag.current_rev == current_rev):
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230 self.log_status(ActionClass.WARN, _("The item %(pagename)s cannot be merged but was changed in both wikis. Please delete it in one of both wikis and try again.") % {"pagename": rp.name})
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231 continue
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232 if rp.local_mime_type != rp.remote_mime_type:
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233 self.log_status(ActionClass.WARN, _("The item %(pagename)s has different mime types in both wikis and cannot be merged. Please delete it in one of both wikis or unify the mime type, and try again.") % {"pagename": rp.name})
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234 continue
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235 if newest_tag.normalised_name != rp.name:
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236 self.log_status(ActionClass.WARN, _("The item %(pagename)s was renamed locally. This is not implemented yet. Therefore all syncronisation history is lost for this page.") % {"pagename": rp.name}) # XXX implement renames
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237 else:
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238 normalised_name = newest_tag.normalised_name
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239 local_rev = newest_tag.current_rev
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240 remote_rev = newest_tag.remote_rev
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241 old_contents = Page(self.request, local_pagename, rev=newest_tag.current_rev).get_raw_body_str() # YYY direct access
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242
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diff changeset
243 self.log_status(ActionClass.INFO, _("Synchronising page %(pagename)s with remote page %(remotepagename)s ...") % {"pagename": local_pagename, "remotepagename": rp.remote_name})
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244
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parents: 1266
diff changeset
245 if direction == DOWN:
eb9e5e21b0e5 Implemented the DOWN direction, refactored direction handling. The synctags of older syncs are invalid now, you have to delete them.
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parents: 1266
diff changeset
246 remote_rev = None # always fetch the full page, ignore remote conflict check
eb9e5e21b0e5 Implemented the DOWN direction, refactored direction handling. The synctags of older syncs are invalid now, you have to delete them.
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parents: 1266
diff changeset
247 patch_base_contents = ""
eb9e5e21b0e5 Implemented the DOWN direction, refactored direction handling. The synctags of older syncs are invalid now, you have to delete them.
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parents: 1266
diff changeset
248 else:
eb9e5e21b0e5 Implemented the DOWN direction, refactored direction handling. The synctags of older syncs are invalid now, you have to delete them.
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parents: 1266
diff changeset
249 patch_base_contents = old_contents
eb9e5e21b0e5 Implemented the DOWN direction, refactored direction handling. The synctags of older syncs are invalid now, you have to delete them.
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parents: 1266
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250
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parents: 1254
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251 if remote_rev != rp.remote_rev:
1304
f103cf7c371e Detect renamed pages. Changed the getDiff interface.
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parents: 1303
diff changeset
252 diff_result = remote.get_diff(rp.remote_name, remote_rev, None, normalised_name)
f103cf7c371e Detect renamed pages. Changed the getDiff interface.
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parents: 1303
diff changeset
253 if diff_result is None:
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parents: 1303
diff changeset
254 self.log_status(ActionClass.ERROR, _("The page %(pagename)s could not be synced. The remote page was renamed. This is not supported yet. You may want to delete one of the pages to get it synced.") % {"pagename": rp.remote_name})
f103cf7c371e Detect renamed pages. Changed the getDiff interface.
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parents: 1303
diff changeset
255 continue
1259
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parents: 1254
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256 is_remote_conflict = diff_result["conflict"]
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parents: 1254
diff changeset
257 assert diff_result["diffversion"] == 1
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parents: 1254
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258 diff = diff_result["diff"]
a76ce7b95190 SyncPages fixes, allow for the case where only the local page is changed.
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parents: 1254
diff changeset
259 current_remote_rev = diff_result["current"]
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parents: 1254
diff changeset
260 else:
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parents: 1254
diff changeset
261 current_remote_rev = remote_rev
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parents: 1299
diff changeset
262 if rp.local_mime_type == MIMETYPE_MOIN:
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parents: 1299
diff changeset
263 is_remote_conflict = wikiutil.containsConflictMarker(old_contents.decode("utf-8"))
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parents: 1299
diff changeset
264 else:
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parents: 1299
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265 is_remote_conflict = NotImplemented
1259
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parents: 1254
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266 diff = None
1141
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parents: 1136
diff changeset
267
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parents: 1164
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268 # do not sync if the conflict is remote and local, or if it is local
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parents: 1164
diff changeset
269 # and the page has never been syncronised
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parents: 1299
diff changeset
270 if (rp.local_mime_type == MIMETYPE_MOIN and wikiutil.containsConflictMarker(current_page.get_raw_body())
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parents: 1164
diff changeset
271 and (remote_rev is None or is_remote_conflict)):
7b128ea29fc4 Further bug fixes in SyncPages and wikisync
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parents: 1164
diff changeset
272 self.log_status(ActionClass.WARN, _("Skipped page %(pagename)s because of a locally or remotely unresolved conflict.") % {"pagename": local_pagename})
7b128ea29fc4 Further bug fixes in SyncPages and wikisync
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parents: 1164
diff changeset
273 continue
7b128ea29fc4 Further bug fixes in SyncPages and wikisync
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parents: 1164
diff changeset
274
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parents: 1266
diff changeset
275 if remote_rev is None and direction == BOTH:
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353c493dfb77 Added local conflict detection, logging support to SyncPages, updated my CHANGES file.
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parents: 1141
diff changeset
276 self.log_status(ActionClass.INFO, _("This is the first synchronisation between this page and the remote wiki."))
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parents: 1136
diff changeset
277
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parents: 1254
diff changeset
278 if diff is None:
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parents: 1299
diff changeset
279 new_contents = old_contents
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parents: 1254
diff changeset
280 else:
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parents: 1299
diff changeset
281 new_contents = patch(patch_base_contents, decompress(diff))
1041
f9568edf1ff0 Introduced MoinLocalWiki class, added code that compares page lists for testing.
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parents: 1030
diff changeset
282
1303
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parents: 1299
diff changeset
283 if rp.local_mime_type == MIMETYPE_MOIN:
a0b8e78621d0 Preliminary support for items of different mime types.
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parents: 1299
diff changeset
284 new_contents_unicode = new_contents.decode("utf-8")
a0b8e78621d0 Preliminary support for items of different mime types.
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parents: 1299
diff changeset
285 # here, the actual merge happens
a0b8e78621d0 Preliminary support for items of different mime types.
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parents: 1299
diff changeset
286 # XXX print "Merging %r, %r and %r" % (old_contents.decode("utf-8"), new_contents, current_page.get_raw_body())
a0b8e78621d0 Preliminary support for items of different mime types.
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parents: 1299
diff changeset
287 verynewtext = diff3.text_merge(old_contents.decode("utf-8"), new_contents_unicode, current_page.get_raw_body(), 2, *conflict_markers)
a0b8e78621d0 Preliminary support for items of different mime types.
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parents: 1299
diff changeset
288 verynewtext_raw = verynewtext.encode("utf-8")
a0b8e78621d0 Preliminary support for items of different mime types.
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parents: 1299
diff changeset
289 else:
a0b8e78621d0 Preliminary support for items of different mime types.
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parents: 1299
diff changeset
290 if diff is None:
a0b8e78621d0 Preliminary support for items of different mime types.
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parents: 1299
diff changeset
291 verynewtext_raw = new_contents
a0b8e78621d0 Preliminary support for items of different mime types.
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parents: 1299
diff changeset
292 else:
a0b8e78621d0 Preliminary support for items of different mime types.
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parents: 1299
diff changeset
293 verynewtext_raw = current_page.get_raw_body_str()
1141
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parents: 1136
diff changeset
294
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parents: 1299
diff changeset
295 diff = textdiff(new_contents, verynewtext_raw)
1260
5d555ec6b40a Fixed a bug that was hard to track down in SyncPages (some hours spent :-/).
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parents: 1259
diff changeset
296 #print "Diff against %r" % new_contents.encode("utf-8")
5d555ec6b40a Fixed a bug that was hard to track down in SyncPages (some hours spent :-/).
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parents: 1259
diff changeset
297
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parents: 1136
diff changeset
298 comment = u"Local Merge - %r" % (remote.get_interwiki_name() or remote.get_iwid())
1158
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parents: 1141
diff changeset
299
353c493dfb77 Added local conflict detection, logging support to SyncPages, updated my CHANGES file.
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parents: 1141
diff changeset
300 # XXX upgrade to write lock
1141
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parents: 1136
diff changeset
301 try:
1266
ff08338e67fe Filter the pagelists by pageList on both sides (speedup). Marked a few operations as direct API accesses.
Alexander Schremmer <alex AT alexanderweb DOT de>
parents: 1264
diff changeset
302 current_page.saveText(verynewtext, current_rev, comment=comment) # YYY direct access
1259
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parents: 1254
diff changeset
303 except PageEditor.Unchanged:
a76ce7b95190 SyncPages fixes, allow for the case where only the local page is changed.
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parents: 1254
diff changeset
304 pass
1141
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Alexander Schremmer <alex AT alexanderweb DOT de>
parents: 1136
diff changeset
305 except PageEditor.EditConflict:
0390d7857d87 Work on SyncPages, fixed prefix handling, wrote initial merge loop.
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parents: 1136
diff changeset
306 assert False, "You stumbled on a problem with the current storage system - I cannot lock pages"
1261
ae9eb32b6899 Refactored code, cleaned up some parts of the code, moved some classes to wikisync
Alexander Schremmer <alex AT alexanderweb DOT de>
parents: 1260
diff changeset
307
1259
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parents: 1254
diff changeset
308 new_local_rev = current_page.get_real_rev()
1261
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Alexander Schremmer <alex AT alexanderweb DOT de>
parents: 1260
diff changeset
309
1267
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Alexander Schremmer <alex AT alexanderweb DOT de>
parents: 1266
diff changeset
310 if direction == BOTH:
eb9e5e21b0e5 Implemented the DOWN direction, refactored direction handling. The synctags of older syncs are invalid now, you have to delete them.
Alexander Schremmer <alex AT alexanderweb DOT de>
parents: 1266
diff changeset
311 try:
1272
e85ad6a95ae5 Documented new ideas in the docstring, changed tag format (store normalised name), transmit normalised name in mergeDiff.
Alexander Schremmer <alex AT alexanderweb DOT de>
parents: 1271
diff changeset
312 very_current_remote_rev = remote.merge_diff(rp.remote_name, compress(diff), new_local_rev, current_remote_rev, current_remote_rev, local_full_iwid, rp.name)
1267
eb9e5e21b0e5 Implemented the DOWN direction, refactored direction handling. The synctags of older syncs are invalid now, you have to delete them.
Alexander Schremmer <alex AT alexanderweb DOT de>
parents: 1266
diff changeset
313 except Exception, e:
eb9e5e21b0e5 Implemented the DOWN direction, refactored direction handling. The synctags of older syncs are invalid now, you have to delete them.
Alexander Schremmer <alex AT alexanderweb DOT de>
parents: 1266
diff changeset
314 raise # XXX rollback locally and do not tag locally
1259
a76ce7b95190 SyncPages fixes, allow for the case where only the local page is changed.
Alexander Schremmer <alex AT alexanderweb DOT de>
parents: 1254
diff changeset
315 else:
1267
eb9e5e21b0e5 Implemented the DOWN direction, refactored direction handling. The synctags of older syncs are invalid now, you have to delete them.
Alexander Schremmer <alex AT alexanderweb DOT de>
parents: 1266
diff changeset
316 very_current_remote_rev = current_remote_rev
eb9e5e21b0e5 Implemented the DOWN direction, refactored direction handling. The synctags of older syncs are invalid now, you have to delete them.
Alexander Schremmer <alex AT alexanderweb DOT de>
parents: 1266
diff changeset
317
1272
e85ad6a95ae5 Documented new ideas in the docstring, changed tag format (store normalised name), transmit normalised name in mergeDiff.
Alexander Schremmer <alex AT alexanderweb DOT de>
parents: 1271
diff changeset
318 tags.add(remote_wiki=remote_full_iwid, remote_rev=very_current_remote_rev, current_rev=new_local_rev, direction=direction, normalised_name=rp.name)
1158
353c493dfb77 Added local conflict detection, logging support to SyncPages, updated my CHANGES file.
Alexander Schremmer <alex AT alexanderweb DOT de>
parents: 1141
diff changeset
319
1303
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Alexander Schremmer <alex AT alexanderweb DOT de>
parents: 1299
diff changeset
320 if rp.local_mime_type != MIMETYPE_MOIN or not wikiutil.containsConflictMarker(verynewtext):
1158
353c493dfb77 Added local conflict detection, logging support to SyncPages, updated my CHANGES file.
Alexander Schremmer <alex AT alexanderweb DOT de>
parents: 1141
diff changeset
321 self.log_status(ActionClass.INFO, _("Page successfully merged."))
353c493dfb77 Added local conflict detection, logging support to SyncPages, updated my CHANGES file.
Alexander Schremmer <alex AT alexanderweb DOT de>
parents: 1141
diff changeset
322 else:
353c493dfb77 Added local conflict detection, logging support to SyncPages, updated my CHANGES file.
Alexander Schremmer <alex AT alexanderweb DOT de>
parents: 1141
diff changeset
323 self.log_status(ActionClass.WARN, _("Page merged with conflicts."))
353c493dfb77 Added local conflict detection, logging support to SyncPages, updated my CHANGES file.
Alexander Schremmer <alex AT alexanderweb DOT de>
parents: 1141
diff changeset
324
353c493dfb77 Added local conflict detection, logging support to SyncPages, updated my CHANGES file.
Alexander Schremmer <alex AT alexanderweb DOT de>
parents: 1141
diff changeset
325 # XXX release lock
1030
807f80c76d81 Work on SyncPages. Fixed a few bugs, added new method to RemoteWiki, build regexes from the RemotePageList.
Alexander Schremmer <alex AT alexanderweb DOT de>
parents: 977
diff changeset
326
1158
353c493dfb77 Added local conflict detection, logging support to SyncPages, updated my CHANGES file.
Alexander Schremmer <alex AT alexanderweb DOT de>
parents: 1141
diff changeset
327
968
3108c8b2597e Add preliminary SyncPages action.
Alexander Schremmer <alex AT alexanderweb DOT de>
parents:
diff changeset
328 def execute(pagename, request):
971
d24f2b1d606a Refactoring, fixed Fault codes, fixed return format of the getdiff method.
Alexander Schremmer <alex AT alexanderweb DOT de>
parents: 970
diff changeset
329 ActionClass(pagename, request).render()