Subversion To Mercurial

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Information about Subversion To Mercurial

Published on August 24, 2009

Author: ladislavprskavec



Migration from Subversion to Mercurial

1. Migration from Subversion to Mercurial Ladislav Prskavec OpenMeeting 27.9.2009

2. Why Mercurial ? ( Google Code (php4hudson, phpchangelogs) Keywords (phpdoc, git not support) Revisions (git not support) Netbeans (native support) Eclipse plugin (Zend Studio) Many extensions Negatives partial rebase (extension) experimental subrepos in Mercurial 1.3.1 (svn:externals)

3. Why Mercurial ? (private rep, issues)

4. SVN xml logs to Hg Question: How make svn log --xml Answer: echo '<?xml version="1.0"?>n<log>n' >$1.xml hg log --template '<logentry revision="{rev}"> <author>{author|obfuscate}</author> <date>{date|isodate}</date> <msg>{desc|escape}n</msg> <paths><path>{files}</path></paths> </logentry>n' $1/ >>$1.xml echo '</log>n' >>$1.xml

5. RCS keywords Question: How make keywords? Answer: Keywords extension (part from .hgrc) [extensions] hgext.keyword = keyword=/usr/share/python-support/mercurial-common/hgext/ [keyword] **.php = **.xml = [keywordmaps] RCSFile = {file|basename},v Author = {author|user} Header = {root}/{file},v {node|short} {date|utcdate} {author|user} Source = {root}/{file},v Date = {date|utcdate} Id = {file|basename},v {node|short} {date|utcdate} {author|user} Revision = {node|short}

6. Deployment SVN deployment script svn --force export /srv/www/ /usr/bin/svn2cl --strip-prefix=trunk --break-before-msg=2 --group-by-day --separate-daylogs -i -- authors=/srv/www/ -o /srv/www/project. cz/changelog sed -i 's/development/production/g' /srv/www/ chown -Rf www-data:www-data /srv/www/ Mercurial deployment script cd ~/hg-ws/ hg pull hg up hg archive /srv/www/ sed -i 's/development/production/g' /srv/www/ chown -Rf www-data:www-data /srv/www/

7. Hooks scripts Subversion (server, repos/hooks/pre-commit) #!/bin/sh REPOS="$1" TXN="$2" # check php CHANGED=`svnlook changed -t "$TXN" "$REPOS" | awk '{print $2}' | grep .php$` for FILE in $CHANGED do MESSAGE=`svnlook cat -t "$TXN" "$REPOS" "$FILE" | $PHP -l ` if [ $? -ne 0 ] then exit 1 fi done exit 0 Mercurial (in .hg/hgrc) [hooks] precommit = test `find -name *.php -exec php -l {} ; | wc -l` -eq 1

8. Summary Evolution not revolution Some workflow for my projects in Mercurial and Svn Local commits hg backout hg rollback (working only localy) Check extensions Convert (from others SCM: cvs, svn, git, darcs, bzr, arch, mnt) Fetch Keyword Notify Rebase Record (staging area)

9. Thanks for your attention Ladislav Prskavec

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