#!/bin/bash
# Converts a TWiki Extension to a Foswiki Extension

if [ $# -ne 1 ]
then
  echo "Usage: `basename $0` Extension_name"
  echo "You must run the script from a current working directory in which you have the extension to be converted in a subdirectory with the same name as the extension."
  echo "If the extension is in an SVN checkout and the script finds a directory called .svn in the extension directory, the script with use svn mv commands when converting."
  exit $E_BADARGS
fi

curdir=`pwd`

# If there is a .svn directory in the extension directory
# we assume we are within an SVN checkout and will put svn
# in front of the mv commands

svncommand=''
if [ -d $curdir/$1/.svn ]
then
    svncommand=svn
fi

#first we change directory names
if [ -d $curdir/$1/data/TWiki ]
then
    $svncommand mv $curdir/$1/data/TWiki $curdir/$1/data/System
fi

if [ -d $curdir/$1/lib/TWiki ]
then
    $svncommand mv $curdir/$1/lib/TWiki $curdir/$1/lib/Foswiki
fi

if [ -d $curdir/$1/pub/TWiki ]
then
    $svncommand mv $curdir/$1/pub/TWiki $curdir/$1/pub/System
fi


#name space change all .pm files in contrib and plugins
cd $curdir/$1/lib/Foswiki

for file in $( find . -type f -name '*.pm')
do
    sed -i.bak -e "s/TWiki::/Foswiki::/g"  $file
    sed -i.bak -e "s/new TWiki\(\);/new Foswiki();/g"  $file
    sed -i.bak -e "s/use TWiki;/use Foswiki;/g" $file
    sed -i.bak -e "s/twiki\([A-Z][A-Za-z]\+\)/foswiki\1/g"  $file
    sed -i.bak -e "s/'twiki'/'foswiki'/g"  $file
    sed -i.bak -e "s/TWikiCompatibility/FoswikiCompatibility/g"  $file
    sed -i.bak -e 's/&Foswiki::Func::getTwikiWebname()/$Foswiki::cfg{SystemWebName}/g'  $file
    sed -i.bak -e 's/Foswiki::Func::getTwikiWebname()/$Foswiki::cfg{SystemWebName}/g'  $file
    sed -i.bak -e "s/^=begin twiki/=begin TML/g"  $file       
done

# First then we update the build contrib files for a plugin
if [ -d Plugins ]
then
    cd $curdir/$1/lib/Foswiki/Plugins/$1
    sed -i.bak -e "s.^data/TWiki.data/System.g" MANIFEST
    sed -i.bak -e "s.^pub/TWiki.pub/System.g"   MANIFEST
    sed -i.bak -e "s.^lib\/TWiki.lib/Foswiki.g"  MANIFEST
    sed -i.bak -e "s/TWiki::/Foswiki::/g"  build.pl
    sed -i.bak -e "s/TWiki::/Foswiki::/g"  Config.spec
    sed -i.bak -e "s/new TWiki\(\);/new Foswiki();/g"  build.pl
    sed -i.bak -e "s/TWiki::/Foswiki::/g"  DEPENDENCIES
fi

cd $curdir/$1/lib/Foswiki

# Updating build contrib files if it is a contrib
if [ -d Contrib ]
then
    cd $curdir/$1/lib/Foswiki/Contrib/$1
    sed -i.bak -e "s.^data/TWiki.data/System.g" MANIFEST
    sed -i.bak -e "s.^pub/TWiki.pub/System.g"   MANIFEST
    sed -i.bak -e "s.^lib\/TWiki.lib/Foswiki.g"  MANIFEST
    sed -i.bak -e "s/TWiki::/Foswiki::/g"  build.pl
    sed -i.bak -e "s/TWiki::/Foswiki::/g"  Config.spec
    sed -i.bak -e "s/new TWiki\(\);/new Foswiki();/g"  build.pl
    sed -i.bak -e "s/TWiki::/Foswiki::/g"  DEPENDENCIES
fi

# name space change pub files for css and js name space changes
cd $curdir/$1
if [ -d pub/System/$1 ]
then
    cd $curdir/$1/pub/System/$1
    for file in $( find . -type f -name '*.css')
    do
        sed -i.bak -e "s/twiki\([A-Z][A-Za-z]\+\)/foswiki\1/g"  $file
    done

    for file in $( find . -type f -name '*.js')
    do
        sed -i.bak -e "s/twiki\([A-Z][A-Za-z]\+\)/foswiki\1/g"  $file
    done

fi


# name space change templates
cd $curdir/$1
if [ -d templates ]
then
    cd $curdir/$1/templates
    for file in $( find . -type f -name '*.tmpl')
    do
        sed -i.bak -e "s/twiki\([A-Z][A-Za-z]\+\)/foswiki\1/g"  $file
    done
fi


# name space change tools files
cd $curdir/$1
if [ -d tools ]
then
    cd $curdir/$1/tools
    for file in $( find . -type f -name '*')
    do
        sed -i.bak -e "s/TWiki::/Foswiki::/g"  $file
        sed -i.bak -e "s/new TWiki\(\);/new Foswiki();/g"  $file
        sed -i.bak -e "s/use TWiki;/use Foswiki;/g" $file
        sed -i.bak -e "s/twiki\([A-Z][A-Za-z]\+\)/foswiki\1/g"  $file
    done
fi


# name space the most common things in Data files. 
# Note you still have to manually do some work
cd $curdir/$1
if [ -d data ]
then
    cd $curdir/$1/data/System
    sed -i.bak -e "s/%TWIKIWEB%\.TWikiPlugins/[[%SYSTEMWEB%.Plugins][Plugins]]/g" $1.txt
    sed -i.bak -e "s'| Plugin Home: | http://TWiki\.org/cgi-bin/view/Plugins/%TOPIC% |'| Plugin Home: | http://foswiki.org/Extensions/%TOPIC% |'g"  $1.txt
    sed -i.bak -e "s'| Feedback: | http://TWiki\.org/cgi-bin/view/Plugins/%TOPIC%Dev |'| Feedback: | http://foswiki.org/Extensions/%TOPIC%Dev |'g" $1.txt
    sed -i.bak -e "/TWiki.org\/cgi-bin\/view\/Plugins\/%TOPIC%Appraisal/d"  $1.txt
    sed -i.bak -e "/\[\[TWiki:Plugins\/Benchmark\]\[Benchmarks\]\]/d"  $1.txt
    sed -i.bak -e "s/| TWiki Dependency: | \$TWiki::Plugins::VERSION/| Dependency: | \$Foswiki::Plugins::VERSION/g" $1.txt
    sed -i.bak -e "s'data/TWiki/'data/System/'g" $1.txt
    sed -i.bak -e "s'pub/TWiki/'pub/System/'g" $1.txt
    sed -i.bak -e "s'lib/TWiki/'lib/Foswiki/'g" $1.txt
    sed -i.bak -e "s/%TWIKIWEB%\.TWikiPreferences/%SYSTEMWEB%.SitePreferences/g" $1.txt
    sed -i.bak -e "s/%TWIKIWEB%\.TextFormattingRules/%SYSTEMWEB%.TextFormattingRules/g" $1.txt
    sed -i.bak -e "s/TWiki 4\.0 and up: //g" $1.txt
    sed -i.bak -e "s/author=\"[^\"]*\"/author=\"ProjectContributor\"/" $1.txt
    sed -i.bak -e "s/reprev=\"1..\"//" $1.txt
fi