scripts/cvs2git_prep.txt

# create a local cvs root
  mkdir cvsroot
  cd cvsroot
  cvs -d :local:$(pwd) init

# make a userful subdir to use
  mkdir -p eclipse.platform.ui
  cd eclipse.platform.ui
  mkdir bundles  examples  features  tests

# "fix" any of the main branches that you care about
# you need to run this script at least twice
# you also have to understand what tag for what date goes where.
# you have to list all of the modules you care about

MODULES='org.eclipse.core.commands
org.eclipse.core.databinding
org.eclipse.core.databinding.beans
org.eclipse.core.databinding.observable
org.eclipse.core.databinding.property
org.eclipse.jface
org.eclipse.jface.databinding
org.eclipse.jface.examples.databinding
org.eclipse.jface.snippets
org.eclipse.jface.tests.databinding
org.eclipse.jface.tests.databinding.conformance
org.eclipse.ui
org.eclipse.ui.carbon
org.eclipse.ui.cocoa
org.eclipse.ui.examples.contributions
org.eclipse.ui.examples.fieldassist
org.eclipse.ui.examples.multipageeditor
org.eclipse.ui.examples.navigator
org.eclipse.ui.examples.propertysheet
org.eclipse.ui.examples.presentation
org.eclipse.ui.examples.rcp.browser
org.eclipse.ui.examples.readmetool
org.eclipse.ui.examples.undo
org.eclipse.ui.examples.views.properties.tabbed/org.eclipse.ui.examples.views.properties.tabbed.article
org.eclipse.ui.examples.views.properties.tabbed/org.eclipse.ui.examples.views.properties.tabbed.hockeyleague
org.eclipse.ui.examples.views.properties.tabbed/org.eclipse.ui.examples.views.properties.tabbed.logic
org.eclipse.ui.ide
org.eclipse.ui.ide.application
org.eclipse.ui.navigator
org.eclipse.ui.navigator.resources
org.eclipse.ui.presentations.r21
org.eclipse.ui.tests
org.eclipse.ui.tests.harness
org.eclipse.ui.tests.navigator
org.eclipse.ui.tests.performance
org.eclipse.ui.tests.rcp
org.eclipse.ui.tests.views.properties.tabbed
org.eclipse.ui.views
org.eclipse.ui.views.properties.tabbed
org.eclipse.ui.win32
org.eclipse.ui.workbench
org.eclipse.ui.workbench.compatibility
'

# what base tag at what date, and what branch
TAG=R3_6
TDATE="06/22/2010 09:00"
BRANCH=R3_6_maintenance


for M in $MODULES; do

	if (cvs rlog -rHEAD $M/.project | grep "	${TAG}:" >/dev/null); then
		if (cvs rlog  -r${TAG} $M/.project | grep "	${BRANCH}:" >/dev/null); then
			echo Correct $BRANCH for $M
		else
			echo cvs rtag -b -r$TAG $BRANCH $M
		fi
	else
		if ( cvs rlog -d "$TDATE" $M/.project | grep "selected revisions: 0" >/dev/null ); then
			echo "Module empty on $TDATE"
		else
			echo cvs rtag -D\"$TDATE\" $TAG $M
			echo cvs rtag -b -r$TAG $BRANCH $M
		fi
	fi
done

# Then fix the other tags.  TAG1 is a known tag (like from above :-)

TAG1=R3_6
TAG2=R3_6_1

for M in $MODULES; do
	if ! (cvs rlog -rHEAD $M/.project | grep "	${TAG2}:" >/dev/null); then
		echo cvs rtag -R -r${TAG1} ${TAG2} $M
	else
		echo Already tagged ${TAG2} $M
	fi
done

# copy over from modules
  cd /cvsroot/eclipse
  MODULES="org.eclipse.core.commands ..."
  for M in $MODULES; do cp -r $M /shared/eclipse/e4/git/cvs/cvsroot/eclipse.platform.ui/bundles; done

# move them into tests or examples, as they're all in bundles.


# try and generate some author data
  find org.eclipse.ui.workbench -name "*,v" -exec grep "^date.*author " {} \; >author.raw
  grep -v "Binary file" author.raw | sed 's/^date.*author //g' | sed 's/;.*$//g' | sort -u >author.ids
  for ID in $( cat author.ids ); do
    ENT=$( getent passwd $ID )
    if [ $? -eq 0 ]; then NAME=$( echo $ENT | cut -f5 -d: ); else NAME=$ID; fi
    echo "'$ID' : ('$NAME', '$ID@eclipse.org')," >>author.py
  done

  # or using LDAP, better email addresses
  for ID in $( cat author.ids ); do
    ldapsearch -x -b "dc=eclipse,dc=org" -s sub "(uid=$ID)" >tmp.txt
    NAME=$ID
    EMAIL=$ID
    if grep "numEntries: 1\$" tmp.txt >/dev/null; then
      NAME=$( grep ^cn: tmp.txt | sed 's/cn: //g' )
      #EMAIL=$( grep ^mail: tmp.txt | sed 's/mail: //g' )
    fi
    echo "'$ID' : ('$NAME', '$EMAIL')," >>author.py
  done

# clean the CVS repo of links
  find cvsroot -type l|xargs -n 1 rm


# get the cvs2git tool
  svn co --username=guest --password="" http://cvs2svn.tigris.org/svn/cvs2svn/trunk cvs2svn-trunk

# run the cvs2git tool
  cvs2svn-trunk/cvs2git --options=cvs2git_ui_and_e4.options

# create a git repo
  #git init --bare --shared eclipse.platform.ui.git #final repo
  git init --shared eclipse.platform.ui #tmp repo

# try the fast import
  cd eclipse.platform.ui
  cat ../cvs2svn-tmp/git-blob.dat ../cvs2svn-tmp/git-dump.dat | git fast-import

# move the tags into a useful place
  python ../cvs2svn-trunk/contrib/git-move-refs.py

# Prune and pack the repo
  git prune
  git repack -a -d --depth=250 --window=250
  git gc --aggressive
  git repack -a -d --depth=250 --window=250

# verify the repo - this can take long, so for your first test skip this step.
  mkdir compare-tmp
  python $(pwd)/cvs2svn-trunk/contrib/verify-cvs2svn.py \
  --git $(pwd)/cvsroot/eclipse.platform.ui \
  $(pwd)/eclipse.platform.ui \
  --tmp=$(pwd)/compare-tmp --diff >compare-log.txt 2>&1 &

# Fixing the Delete only tags:
  /bin/bash fix_tags.sh >tag_report.txt
  grep ^git tag_report.txt >mv_tags.txt
  # examine them
  /bin/bash mv_tags.txt

# now examine the repo, hopefully the tags and branches that we care about are in decent shape.


# add a .gitignore at the base of the repo to branches you care about
  cd eclipse.platform.ui
#contents:
bin/
target/
*~
*.rej
*.bak


#
#
#  All of the stuff below are like extra steps.
#


# add it to a bare repo
  git remote bareLocal ssh://e4Build@build.eclipse.org/shared/eclipse/e4/git/cvs/eclipse.platform.ui.git
  git push --all bareLocal
  git push --tags bareLocal

# copy it as pwebster to my home dir

# put it into a test location
  cd /gitroot/e4
  git clone -l --mirror $HOME/eclipse.platform.ui.git eclipse.platform.ui.git


# converting a simple map file - this does funky things as it tokenizes the line
  while read LINE; do 
    if (echo $LINE | grep :pserver >/dev/null); then 
      HDR=$( echo $LINE | cut -f1 -d= ) 
      ID=$( echo $HDR | cut -f2 -d\@ )
      TAG=$( echo $LINE | cut -f1 -d, | cut -f2 -d= )
      echo "${HDR}=GIT,tag=${TAG},repo=git://git.eclipse.org/gitroot/e4/eclipse.platform.ui.git,path=bundles/$ID" >>new.map
    else
      echo $LINE >>new.map
    fi
  done <ui.map

# converting a simple map file with sed
  sed 's/^\([^@]*\)@\([^=]*\)=\([^,]*\),.*$/\1@\2=GIT,tag=\3,repo=git:\/\/git.eclipse.org\/gitroot\/e4\/eclipse.platform.ui.git,path=bundles\/\2/g'
  # for tests, we use file:///gitroot
  # provides default path in bundles, needs to be modified afterwards for tests and examples