#!/bin/bash

die() {

    echo $*

    exit 1

}

default_tag="javascriptcore-4.6-snapshot-29072009"

if [ $# -eq 0 ]; then

    tag="$default_tag"

elif [ $# -eq 1 ]; then

    tag=$1

else

    die "usage: $0 [commit (defaults to $default_tag)]"

fi

repository=`git config qtwebkit.url`

if [ -z "$repository" ]; then

    die "error: cannot locate webkit git repository. please run git config --global qtwebkit.url /path-or-url/to/webkit/repo"

fi

excluded_directories="$excluded_directories JavaScriptCore/Makefile"

excluded_directories="$excluded_directories JavaScriptCore/GNUmakefile.am"

excluded_directories="$excluded_directories JavaScriptCore/Configurations"

excluded_directories="$excluded_directories JavaScriptCore/JavaScriptCore.exp"

excluded_directories="$excluded_directories JavaScriptCore/JavaScriptCore.xcodeproj"

excluded_directories="$excluded_directories JavaScriptCore/tests"

excluded_directories="$excluded_directories JavaScriptCore/API/tests"

excluded_directories="$excluded_directories JavaScriptCore/JavaScriptCore.vcproj"

excluded_directories="$excluded_directories JavaScriptCore/wtf/wx"

excluded_directories="$excluded_directories JavaScriptCore/wtf/gtk"

excluded_directories="$excluded_directories JavaScriptCore/wtf/mac"

excluded_directories="$excluded_directories JavaScriptCore/wtf/win"

excluded_directories="$excluded_directories JavaScriptCore/wtf/chromium"

excluded_directories="$excluded_directories JavaScriptCore/wtf/haiku"

excluded_directories="$excluded_directories JavaScriptCore/icu"

files_to_remove=""

files_to_remove="$files_to_remove JavaScriptCore/AllInOneFile.cpp"

files_to_remove="$files_to_remove JavaScriptCore/JavaScriptCoreSources.bkl"

files_to_remove="$files_to_remove JavaScriptCore/jscore.bkl"

files_to_remove="$files_to_remove JavaScriptCore/jsc.pro"

require_clean_work_tree() {

    # test if working tree is dirty

    git rev-parse --verify HEAD > /dev/null &&

    git update-index --refresh &&

    git diff-files --quiet &&

    git diff-index --cached --quiet HEAD ||

    die "Working tree is dirty"

}

which qmake >/dev/null 2>/dev/null

if [ "$?" != 0 ]; then

    die "abort: Could not locate qmake in your PATH"

fi

test -z "$(git rev-parse --show-cdup)" || {

       exit=$?

       echo >&2 "You need to run this command from the toplevel of the working tree."

       exit $exit

}

echo "checking working tree"

require_clean_work_tree

revCount=`git ls-remote $repository | grep $tag | awk '{print $1}' | wc -l`

if [ "$revCount" != 1 ]; then

    die "Cannot parse $tag into a revision. It seems ambiguous".

fi

rev=`git ls-remote $repository | grep -E "^.+$tag$" | awk '{print $1}'`

tarball=`mktemp /tmp/webkit-snapshot.tar.XXXXXX` || exit 1

echo "creating $tarball"

echo "archiving webkit from $repository $tag ( $rev )"

git archive --remote=$repository $rev JavaScriptCore WebKit.pri > $tarball || exit 1

echo "removing unwanted files and directories"

for dir in $excluded_directories; do

    echo "    removing $dir"

    tar --delete --file=$tarball $dir

done

for item in $exclude_with_exceptions_list; do

    dir=`echo $item | awk -F : '{print $1}'`

    include=`echo $item | awk -F : '{print $2}'`

    echo "    removing $dir except $include"

    files=`tar --list --file=$tarball $dir | grep -v -E "^$dir\$" | grep -v $include`

    tar --delete --file=$tarball $files

done

for file in $files_to_remove; do

    echo "    removing $file"

    tar --delete --file=$tarball $file

done

echo "done!"

srcdir=src/3rdparty/javascriptcore

absSrcDir=$PWD/$srcdir

localDiff=

lastImportRevison=

echo "replacing $srcdir"

if [  -d $srcdir ]; then

    git ls-files $srcdir | xargs rm

    git ls-files -z src/3rdparty/javascriptcore | git update-index --force-remove -z --stdin

else

    mkdir -p $srcdir

fi

(cd $srcdir && tar xf $tarball)

git add $srcdir

echo "generating extra sources"

(

  for proj in JavaScriptCore; do

      cd $absSrcDir/$proj &&

      rm -rf tmp &&

      mkdir tmp &&

      cd tmp &&

      mkdir -p ../generated &&

      qmake -o Makefile CONFIG-=QTDIR_build QT_CONFIG+=phonon GENERATED_SOURCES_DIR=`pwd`/../generated  OUTPUT_DIR=`pwd` ../$proj.pro &&

      make generated_files &&

      perl -pi -e "s,$absSrcDir/,,g" ../generated/*.cpp ../generated/*.h &&

      git add ../generated &&

      cd .. &&

      rm -rf tmp &&

      cd ..

  done

)

rm -rf $srcdir/WebKitBuild

cat >$srcdir/VERSION <<EOT

This is a snapshot of JavaScriptCore from

        git://gitorious.org/qtwebkit/qtwebkit.git

The commit imported was from the

        $tag branch/tag

and has the sha1 checksum

        $rev

EOT

git add $srcdir/VERSION

git diff-files --name-only -z | git update-index --remove -z --stdin

echo "removing $tarball"

rm -f $tarball

cat >commitlog.txt <<EOT

Updated JavaScriptCore from $repository to $tag ( $rev )

EOT

if [ -d "$repository/.git" -a -n "$lastImportRevison" ]; then

    echo >>commitlog.txt

    echo "Changes in WebKit/qt since the last update:" >>commitlog.txt

    echo >>commitlog.txt

    git --git-dir=$repository/.git diff $lastImportRevison $rev -- WebKit/qt/ChangeLog | sed -n -e "s,^\+\(.*\),\1,p" >>commitlog.txt

fi

echo "Changes:"

echo

git --no-pager diff --name-status --cached $srcdir

echo

echo "Wrote commitlog.txt. Use with"

echo

echo "    git commit -e -F commitlog.txt"

echo

echo "to commit your changes"

if [ -n "$localDiff" ]; then

    echo

    echo "The changes that were locally stored in Perforce are now stored as a git patch in $localDiff"

    echo "You may want to appy them with"

    echo

    echo "    git am -3 $localDiff"

    echo

fi