Mercurial > hgsubversion

annotate diff_cmd.py @ 134:22248b34b15a

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Add notes on how metadata is stored and recovered. Note that at this point, none of this has actually been implemented. This is documentation of the improved system to be used in the future.
author Augie Fackler <durin42@gmail.com>
date Mon, 01 Dec 2008 11:13:01 -0600
parents 91ce18fa0375
children 40474f6c1f84
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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91ce18fa0375 Add a diff command that behaves kind of like svn diff.
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1 #!/usr/bin/env python
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2 import re
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3
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4 from mercurial import patch
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5
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6 import util
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7 import hg_delta_editor
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8
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9 b_re = re.compile(r'^\+\+\+ b\/([^\n]*)', re.MULTILINE)
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10 a_re = re.compile(r'^--- a\/([^\n]*)', re.MULTILINE)
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11 devnull_re = re.compile(r'^([-+]{3}) /dev/null', re.MULTILINE)
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12 header_re = re.compile(r'^diff --git .* b\/(.*)', re.MULTILINE)
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13 newfile_devnull_re = re.compile(r'^--- /dev/null\n\+\+\+ b/([^\n]*)',
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14 re.MULTILINE)
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15 def filterdiff(diff, base_revision):
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16 diff = newfile_devnull_re.sub(r'--- \1\t(revision 0)' '\n'
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17 r'+++ \1\t(working copy)',
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18 diff)
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19 diff = a_re.sub(r'--- \1'+ ('\t(revision %d)' % base_revision), diff)
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20 diff = b_re.sub(r'+++ \1' + '\t(working copy)', diff)
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21 diff = devnull_re.sub(r'\1 /dev/null' '\t(working copy)', diff)
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22
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23 diff = header_re.sub(r'Index: \1' + '\n' + ('=' * 67), diff)
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24 return diff
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25
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26
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27 @util.register_subcommand('diff')
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28 def diff_command(ui, repo, hg_repo_path, **opts):
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29 """Show a diff of the most recent revision against its parent from svn.
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30 """
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31 hge = hg_delta_editor.HgChangeReceiver(hg_repo_path,
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32 ui_=ui)
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33 svn_commit_hashes = dict(zip(hge.revmap.itervalues(),
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34 hge.revmap.iterkeys()))
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35 o_r = util.outgoing_revisions(ui, repo, hge, svn_commit_hashes)
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36 parent = repo.parents()[0]
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37 if o_r:
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38 parent = repo[o_r[-1]].parents()[0]
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39 base_rev, _junk = svn_commit_hashes[parent.node()]
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40 it = patch.diff(repo, parent.node(), None,
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41 opts=patch.diffopts(ui, opts))
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42 ui.write(filterdiff(''.join(it), base_rev))