Mercurial > hgsubversion
annotate hgsubversion/wrappers.py @ 356:62f90781eb10
push: don't refuse to push if it looks like we haven't pulled all changes.
We can't rely on the most-recent change number matching our most-recent
change number because there can be changes in svn that produce no
corresponding hg changeset.
author | Augie Fackler <durin42@gmail.com> |
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date | Wed, 27 May 2009 21:40:58 -0500 |
parents | 537de0300510 |
children | 25ebdc16b05b |
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257
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1 import os |
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2 |
264
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3 from hgext import rebase as hgrebase |
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4 |
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5 from mercurial import cmdutil as hgcmdutil |
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6 from mercurial import commands |
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7 from mercurial import patch |
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8 from mercurial import hg |
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9 from mercurial import util as hgutil |
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10 from mercurial import node |
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11 from mercurial import i18n |
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12 |
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13 from svn import core |
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14 from svn import delta |
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15 |
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16 import cmdutil |
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17 import hg_delta_editor |
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18 import stupid as stupidmod |
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19 import svnwrap |
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20 import util |
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21 |
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22 def parent(orig, ui, repo, *args, **opts): |
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23 """show Mercurial & Subversion parents of the working dir or revision |
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24 """ |
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25 if not opts.get('svn', False): |
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26 return orig(ui, repo, *args, **opts) |
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27 hge = hg_delta_editor.HgChangeReceiver(repo=repo) |
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28 svn_commit_hashes = dict(zip(hge.revmap.itervalues(), |
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29 hge.revmap.iterkeys())) |
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30 ha = cmdutil.parentrev(ui, repo, hge, svn_commit_hashes) |
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31 if ha.node() == node.nullid: |
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32 raise hgutil.Abort('No parent svn revision!') |
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33 displayer = hgcmdutil.show_changeset(ui, repo, opts, buffered=False) |
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34 displayer.show(ha) |
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35 return 0 |
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36 |
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37 |
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38 def outgoing(repo, dest=None, heads=None, force=False): |
257
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39 """show changesets not found in the Subversion repository |
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40 """ |
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41 assert dest.capable('subversion') |
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42 |
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43 # split off #rev; TODO implement --revision/#rev support |
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44 svnurl, revs, checkout = hg.parseurl(dest.svnurl, heads) |
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45 hge = hg_delta_editor.HgChangeReceiver(repo=repo) |
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46 svn_commit_hashes = dict(zip(hge.revmap.itervalues(), |
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47 hge.revmap.iterkeys())) |
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48 return util.outgoing_revisions(repo.ui, repo, hge, svn_commit_hashes, |
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49 repo.parents()[0].node()) |
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50 |
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51 |
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52 def diff(orig, ui, repo, *args, **opts): |
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53 """show a diff of the most recent revision against its parent from svn |
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54 """ |
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55 if not opts.get('svn', False) or opts.get('change', None): |
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56 return orig(ui, repo, *args, **opts) |
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57 svn_commit_hashes = {} |
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58 hge = hg_delta_editor.HgChangeReceiver(repo=repo) |
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59 svn_commit_hashes = dict(zip(hge.revmap.itervalues(), |
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60 hge.revmap.iterkeys())) |
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61 if not opts.get('rev', None): |
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62 parent = repo.parents()[0] |
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63 o_r = util.outgoing_revisions(ui, repo, hge, svn_commit_hashes, |
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64 parent.node()) |
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65 if o_r: |
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66 parent = repo[o_r[-1]].parents()[0] |
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67 opts['rev'] = ['%s:.' % node.hex(parent.node()), ] |
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68 node1, node2 = hgcmdutil.revpair(repo, opts['rev']) |
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69 baserev, _junk = svn_commit_hashes.get(node1, (-1, 'junk', )) |
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70 newrev, _junk = svn_commit_hashes.get(node2, (-1, 'junk', )) |
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71 it = patch.diff(repo, node1, node2, |
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72 opts=patch.diffopts(ui, opts={'git': True, |
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73 'show_function': False, |
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74 'ignore_all_space': False, |
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75 'ignore_space_change': False, |
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76 'ignore_blank_lines': False, |
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77 'unified': True, |
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78 'text': False, |
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79 })) |
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80 ui.write(cmdutil.filterdiff(''.join(it), baserev, newrev)) |
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81 |
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82 def push(repo, dest, force, revs): |
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83 """push revisions starting at a specified head back to Subversion. |
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84 """ |
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85 assert not revs, 'designated revisions for push remains unimplemented.' |
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86 ui = repo.ui |
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87 svnurl = util.normalize_url(repo.ui.expandpath(dest.svnurl)) |
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88 old_encoding = util.swap_out_encoding() |
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89 # split of #rev; TODO: implement --rev/#rev support |
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90 svnurl, revs, checkout = hg.parseurl(svnurl, revs) |
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91 # TODO: do credentials specified in the URL still work? |
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92 user = repo.ui.config('hgsubversion', 'username') |
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93 passwd = repo.ui.config('hgsubversion', 'password') |
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94 svn = svnwrap.SubversionRepo(svnurl, user, passwd) |
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95 hge = hg_delta_editor.HgChangeReceiver(repo=repo, uuid=svn.uuid) |
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96 |
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97 # Strategy: |
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98 # 1. Find all outgoing commits from this head |
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99 if len(repo.parents()) != 1: |
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100 ui.status('Cowardly refusing to push branch merge\n') |
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101 return 1 |
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102 workingrev = repo.parents()[0] |
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103 ui.status('searching for changes\n') |
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104 svn_commit_hashes = dict(zip(hge.revmap.itervalues(), |
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105 hge.revmap.iterkeys())) |
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106 outgoing = util.outgoing_revisions(ui, repo, hge, svn_commit_hashes, workingrev.node()) |
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107 if not (outgoing and len(outgoing)): |
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108 ui.status('no changes found\n') |
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109 return 0 |
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110 while outgoing: |
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111 oldest = outgoing.pop(-1) |
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112 old_ctx = repo[oldest] |
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113 if len(old_ctx.parents()) != 1: |
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114 ui.status('Found a branch merge, this needs discussion and ' |
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115 'implementation.\n') |
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116 return 1 |
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117 base_n = old_ctx.parents()[0].node() |
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118 old_children = repo[base_n].children() |
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119 svnbranch = repo[base_n].branch() |
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120 oldtip = base_n |
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121 samebranchchildren = [c for c in repo[oldtip].children() if c.branch() == svnbranch |
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122 and c.node() in svn_commit_hashes] |
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123 while samebranchchildren: |
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124 oldtip = samebranchchildren[0].node() |
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125 samebranchchildren = [c for c in repo[oldtip].children() if c.branch() == svnbranch |
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126 and c.node() in svn_commit_hashes] |
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127 # 2. Commit oldest revision that needs to be pushed |
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128 base_revision = svn_commit_hashes[base_n][0] |
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129 try: |
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130 cmdutil.commit_from_rev(ui, repo, old_ctx, hge, svnurl, |
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131 base_revision, user, passwd) |
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132 except cmdutil.NoFilesException: |
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133 ui.warn("Could not push revision %s because it had no changes in svn.\n" % |
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134 old_ctx) |
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135 return 1 |
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136 # 3. Fetch revisions from svn |
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137 # TODO: this probably should pass in the source explicitly - rev too? |
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138 r = repo.pull(dest, force=force) |
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139 assert not r or r == 0 |
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140 # 4. Find the new head of the target branch |
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141 oldtipctx = repo[oldtip] |
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142 replacement = [c for c in oldtipctx.children() if c not in old_children |
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143 and c.branch() == oldtipctx.branch()] |
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144 assert len(replacement) == 1, 'Replacement node came back as: %r' % replacement |
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145 replacement = replacement[0] |
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146 # 5. Rebase all children of the currently-pushing rev to the new branch |
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147 heads = repo.heads(old_ctx.node()) |
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148 for needs_transplant in heads: |
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149 def extrafn(ctx, extra): |
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150 if ctx.node() == oldest: |
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151 return |
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152 extra['branch'] = ctx.branch() |
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153 # TODO: can we avoid calling our own rebase wrapper here? |
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154 rebase(hgrebase.rebase, ui, repo, svn=True, svnextrafn=extrafn, |
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155 svnsourcerev=needs_transplant) |
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156 repo = hg.repository(ui, hge.path) |
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157 for child in repo[replacement.node()].children(): |
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158 rebasesrc = node.bin(child.extra().get('rebase_source', node.hex(node.nullid))) |
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159 if rebasesrc in outgoing: |
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160 while rebasesrc in outgoing: |
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161 rebsrcindex = outgoing.index(rebasesrc) |
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162 outgoing = (outgoing[0:rebsrcindex] + |
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163 [child.node(), ] + outgoing[rebsrcindex+1:]) |
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164 children = [c for c in child.children() if c.branch() == child.branch()] |
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165 if children: |
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166 child = children[0] |
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167 rebasesrc = node.bin(child.extra().get('rebase_source', node.hex(node.nullid))) |
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168 # TODO: stop constantly creating the HgChangeReceiver instances. |
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169 hge = hg_delta_editor.HgChangeReceiver(hge.repo, ui_=ui, uuid=svn.uuid) |
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170 svn_commit_hashes = dict(zip(hge.revmap.itervalues(), hge.revmap.iterkeys())) |
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171 util.swap_out_encoding(old_encoding) |
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172 return 0 |
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173 |
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174 |
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175 def pull(repo, source, heads=[], force=False): |
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176 """pull new revisions from Subversion""" |
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177 assert source.capable('subversion') |
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178 svn_url = source.svnurl |
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179 |
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180 # Split off #rev |
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181 svn_url, heads, checkout = hg.parseurl(svn_url, heads) |
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182 old_encoding = util.swap_out_encoding() |
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183 |
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184 # TODO implement skipto support |
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185 skipto_rev = 0 |
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186 try: |
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187 stopat_rev = int(checkout or 0) |
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188 except ValueError: |
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189 raise hgutil.Abort('unrecognised Subversion revision %s: ' |
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190 'only numbers work.' % checkout) |
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191 |
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192 have_replay = not repo.ui.configbool('hgsubversion', 'stupid') |
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193 if have_replay and not callable( |
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194 delta.svn_txdelta_apply(None, None, None)[0]): #pragma: no cover |
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195 repo.ui.status('You are using old Subversion SWIG bindings. Replay ' |
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196 'will not work until you upgrade to 1.5.0 or newer. ' |
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197 'Falling back to a slower method that may be buggier. ' |
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198 'Please upgrade, or contribute a patch to use the ' |
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199 'ctypes bindings instead of SWIG.\n') |
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200 have_replay = False |
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201 elif not have_replay: |
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202 repo.ui.note('fetching stupidly...\n') |
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203 |
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204 # TODO: do credentials specified in the URL still work? |
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205 user = repo.ui.config('hgsubversion', 'username') |
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206 passwd = repo.ui.config('hgsubversion', 'password') |
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207 svn = svnwrap.SubversionRepo(svn_url, user, passwd) |
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208 hg_editor = hg_delta_editor.HgChangeReceiver(repo=repo, subdir=svn.subdir, |
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209 uuid=svn.uuid) |
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210 |
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211 start = max(hg_editor.last_known_revision(), skipto_rev) |
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212 initializing_repo = (hg_editor.last_known_revision() <= 0) |
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213 ui = repo.ui |
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214 |
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215 if initializing_repo and start > 0: |
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216 raise hgutil.Abort('Revision skipping at repository initialization ' |
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217 'remains unimplemented.') |
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218 |
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219 revisions = 0 |
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220 |
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221 try: |
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222 # start converting revisions |
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223 for r in svn.revisions(start=start, stop=stopat_rev): |
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224 if (r.author is None and |
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225 r.message == 'This is an empty revision for padding.'): |
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226 continue |
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227 hg_editor.update_branch_tag_map_for_rev(r) |
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228 # got a 502? Try more than once! |
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229 tries = 0 |
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230 converted = False |
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231 while not converted: |
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232 try: |
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233 util.describe_revision(ui, r) |
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234 if have_replay: |
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235 try: |
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236 cmdutil.replay_convert_rev(hg_editor, svn, r) |
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237 except svnwrap.SubversionRepoCanNotReplay, e: #pragma: no cover |
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238 ui.status('%s\n' % e.message) |
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239 stupidmod.print_your_svn_is_old_message(ui) |
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240 have_replay = False |
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241 stupidmod.svn_server_pull_rev(ui, svn, hg_editor, r) |
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242 else: |
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243 stupidmod.svn_server_pull_rev(ui, svn, hg_editor, r) |
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244 converted = True |
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245 except core.SubversionException, e: #pragma: no cover |
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246 if (e.apr_err == core.SVN_ERR_RA_DAV_REQUEST_FAILED |
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247 and '502' in str(e) |
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248 and tries < 3): |
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249 tries += 1 |
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250 ui.status('Got a 502, retrying (%s)\n' % tries) |
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251 else: |
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252 raise hgutil.Abort(*e.args) |
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253 revisions += 1 |
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254 except KeyboardInterrupt: |
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255 pass |
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256 finally: |
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257 util.swap_out_encoding(old_encoding) |
264
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258 |
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259 if revisions == 0: |
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260 ui.status(i18n._("no changes found\n")) |
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261 return 0 |
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262 else: |
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263 ui.status("pulled %d revisions\n" % revisions) |
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264 |
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265 def rebase(orig, ui, repo, **opts): |
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266 """rebase current unpushed revisions onto the Subversion head |
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267 |
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268 This moves a line of development from making its own head to the top of |
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269 Subversion development, linearizing the changes. In order to make sure you |
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270 rebase on top of the current top of Subversion work, you should probably run |
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271 'hg svn pull' before running this. |
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272 |
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273 Also looks for svnextrafn and svnsourcerev in **opts. |
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274 """ |
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275 if not opts.get('svn', False): |
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276 return orig(ui, repo, **opts) |
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277 def extrafn2(ctx, extra): |
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278 """defined here so we can add things easily. |
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279 """ |
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280 extra['branch'] = ctx.branch() |
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281 extrafn = opts.get('svnextrafn', extrafn2) |
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282 sourcerev = opts.get('svnsourcerev', repo.parents()[0].node()) |
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283 hge = hg_delta_editor.HgChangeReceiver(repo=repo) |
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284 svn_commit_hashes = dict(zip(hge.revmap.itervalues(), |
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285 hge.revmap.iterkeys())) |
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286 o_r = util.outgoing_revisions(ui, repo, hge, svn_commit_hashes, sourcerev=sourcerev) |
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287 if not o_r: |
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288 ui.status('Nothing to rebase!\n') |
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289 return 0 |
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290 if len(repo[sourcerev].children()): |
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291 ui.status('Refusing to rebase non-head commit like a coward\n') |
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292 return 0 |
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293 parent_rev = repo[o_r[-1]].parents()[0] |
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294 target_rev = parent_rev |
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295 p_n = parent_rev.node() |
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296 exhausted_choices = False |
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297 while target_rev.children() and not exhausted_choices: |
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298 for c in target_rev.children(): |
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299 exhausted_choices = True |
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300 n = c.node() |
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301 if (n in svn_commit_hashes and |
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302 svn_commit_hashes[n][1] == svn_commit_hashes[p_n][1]): |
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303 target_rev = c |
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304 exhausted_choices = False |
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305 break |
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306 if parent_rev == target_rev: |
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307 ui.status('Already up to date!\n') |
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308 return 0 |
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309 return orig(ui, repo, dest=node.hex(target_rev.node()), |
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310 base=node.hex(sourcerev), |
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311 extrafn=extrafn) |