#!/bin/sh

# Generic function to print an error message and bail out.

die ()

{

    echo $1 > /dev/stderr

    exit 1

}

# Print usage

usage ()

{

    cat <

$0 -- Generate a git repository from .patch files

Usage:

  $0 [-u] [-h] <REPOSITORY>

<REPOSITORY> is the directory where the rebase was performed.  You

need to clone the repository first.

Options are:

  -h: Print this message

  -u: Uncommit all patches and initialize stgit repo

EOF

    exit 0

}

test -f gdb.spec || die "This script needs to run from the same directory as gdb.spec."

test -z $1 && die "You need to specify the repository."

test "$1" = "-h" && usage

uncommit=0

if [ "$1" = "-u" ]; then

    command -v stg > /dev/null 2>&1  \

	|| die "Cannot find stg.  Is stgit installed?"

    uncommit=1

    shift

fi

git_repo=$1

if [ ! -e $git_repo ]; then

    echo "$0: repository \"$git_repo\" does not exist"

    exit 1

fi

test -f _git_upstream_commit || die "Cannot find _git_upstream_commit file."

test -f _patch_order || die "Cannot find _patch_order file."

last_ancestor_commit=`cat _git_upstream_commit`

cd $1

git name-rev $last_ancestor_commit

test $? -eq 0 || die "Could not find $last_ancestor_commit in the repository $1.  Did you run 'git fetch'?"

f=`cd .. && pwd`

# Create a branch for the checkout if using stgit; use the distro name in

# the name of this branch.

if (($uncommit)); then

    name=devel-`basename $f`

    branch="-b $name"

else

    branch=""

fi

git checkout $branch $last_ancestor_commit

echo "Applying patches..."

for p in `cat ../_patch_order` ; do

    git am ../$p

    test $? -eq 0 || die "Could not apply patch '$p'."

done

if (($uncommit)); then

    echo "Uncommitting patches..."

    stg init

    stg uncommit -t $last_ancestor_commit -x

fi