Mercurial > hg
view tests/test-impexp-branch @ 5378:8a2915f57dfc
convert: add a mode where mercurial_sink skips empty revisions.
The getchanges function of some converter_source classes can return
some false positives. I.e. they sometimes claim that a file "foo"
was changed in some revision, even though its contents are still the
same.
convert_svn is particularly bad, but I think this can also happen with
convert_cvs and, at least in theory, with mercurial_source.
For regular conversions this is not really a problem - as long as
getfile returns the right contents, we'll get a converted revision
with the right contents. But when we use --filemap, this could lead
to superfluous revisions being converted.
Instead of fixing every converter_source, I decided to change
mercurial_sink to work around this problem.
When --filemap is used, we're interested only in revisions that touch
some specific files. If a revision doesn't change any of these files,
then we're not interested in it (at least for revisions with a single
parent; merges are special).
For mercurial_sink, we abuse this property and rollback a commit if
the manifest text hasn't changed. This avoids duplicating the logic
from localrepo.filecommit to detect unchanged files.
author | Alexis S. L. Carvalho <alexis@cecm.usp.br> |
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date | Thu, 04 Oct 2007 23:21:37 -0300 |
parents | 32ea809e5bd1 |
children |
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#!/bin/sh cat >findbranch.py <<EOF import re, sys head_re = re.compile('^#(?:(?:\\s+([A-Za-z][A-Za-z0-9_]*)(?:\\s.*)?)|(?:\\s*))$') for line in sys.stdin: hmatch = head_re.match(line) if not hmatch: sys.exit(1) if hmatch.group(1) == 'Branch': sys.exit(0) sys.exit(1) EOF hg init a cd a echo "Rev 1" >rev hg add rev hg commit -m "No branch." hg branch abranch echo "Rev 2" >rev hg commit -m "With branch." if hg export 0 | python ../findbranch.py; then echo "Export of default branch revision has Branch header" 1>&2 exit 1 fi if hg export 1 | python ../findbranch.py; then : # Do nothing else echo "Export of branch revision is missing Branch header" 1>&2 exit 1 fi # Make sure import still works with branch information in patches. cd .. hg init b cd b hg -R ../a export 0 | hg import - hg -R ../a export 1 | hg import - cd .. rm -rf b hg init b cd b hg -R ../a export 0 | hg import --exact - hg -R ../a export 1 | hg import --exact -