upstream/mercurial-mirror Files · tests/svn/svndump-empty.sh

convert/svn: do not try converting empty head revisions (issue3347)...

convert/svn: do not try converting empty head revisions (issue3347) Subversion conversion works by picking trunk and branches heads, computing a revision graph from them and converting the selected commits. By design we fail to convert empty revisions so we have to be careful when discovering the revision graph. In this particular issue, the source svn repository was a partial mirror made by svnsync. The funny part is svnsync preserves all revisions including empty ones. Also, we trusted ra.stat(path, stop).created_rev to give us the latest revision with changes in path history up to stop. This assumption broke at least when path is '', that is the repository root, which always returned 'stop' revision despited being empty. The workaround is to first trust ra.stat() but if the returned revision appear empty, search the whole path history from stop to r1 until some changes are found.

Patrick Mezard - - Load All Authors

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             svndump-empty.sh
        
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      #!/bin/sh

      #

      # Use this script to generate empty.svndump

      #

      mkdir temp

      cd temp

      mkdir project-orig

      cd project-orig

      mkdir trunk

      mkdir branches

      mkdir tags

      cd ..

      svnadmin create svn-repo

      svnurl=file://`pwd`/svn-repo

      svn import project-orig $svnurl -m "init projA"

      svn co $svnurl project

      cd project

      mkdir trunk/dir

      echo a > trunk/dir/a

      svn add trunk/dir

      svn ci -m adddir

      echo b > trunk/b

      svn add trunk/b

      svn ci -m addb

      echo c > c

      svn add c

      svn ci -m addc

      cd ..

      # svnsync repo/trunk/dir only so the last two revisions are empty

      svnadmin create svn-empty

      cat > svn-empty/hooks/pre-revprop-change <<EOF

      #!/bin/sh

      exit 0

      EOF

      chmod +x svn-empty/hooks/pre-revprop-change

      svnsync init --username svnsync file://`pwd`/svn-empty file://`pwd`/svn-repo/trunk/dir

      svnsync sync file://`pwd`/svn-empty

      svn log -v file://`pwd`/svn-empty

      svnadmin dump svn-empty > ../empty.svndump

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				#!/bin/sh
				#
				# Use this script to generate empty.svndump
				#

				mkdir temp
				cd temp

				mkdir project-orig
				cd project-orig
				mkdir trunk
				mkdir branches
				mkdir tags
				cd ..

				svnadmin create svn-repo
				svnurl=file://`pwd`/svn-repo
				svn import project-orig $svnurl -m "init projA"

				svn co $svnurl project
				cd project
				mkdir trunk/dir
				echo a > trunk/dir/a
				svn add trunk/dir
				svn ci -m adddir

				echo b > trunk/b
				svn add trunk/b
				svn ci -m addb

				echo c > c
				svn add c
				svn ci -m addc
				cd ..

				# svnsync repo/trunk/dir only so the last two revisions are empty
				svnadmin create svn-empty
				cat > svn-empty/hooks/pre-revprop-change <<EOF
				#!/bin/sh
				exit 0
				EOF
				chmod +x svn-empty/hooks/pre-revprop-change
				svnsync init --username svnsync file://`pwd`/svn-empty file://`pwd`/svn-repo/trunk/dir
				svnsync sync file://`pwd`/svn-empty
				svn log -v file://`pwd`/svn-empty

				svnadmin dump svn-empty > ../empty.svndump