#!/bin/bash -

set -e

# Maintainer script to copy patches from the git repo to the current

# directory.  Use it like this:

#   ./copy-patches.sh

# Check we're in the right directory.

if [ ! -f libguestfs.spec ]; then

    echo "$0: run this from the directory containing 'libguestfs.spec'"

    exit 1

fi

git_checkout=$HOME/d/libguestfs-rhel-7.0

if [ ! -d $git_checkout ]; then

    echo "$0: $git_checkout does not exist"

    echo "This script is only for use by the maintainer when preparing a"

    echo "libguestfs release on RHEL."

    exit 1

fi

# Get the base version of libguestfs.

version=`grep '^Version:' libguestfs.spec | awk '{print $2}'`

# Remove any existing patches.

git rm -f [0-9]*.patch ||:

rm -f [0-9]*.patch

# Get the patches.

(cd $git_checkout; rm -f [0-9]*.patch; git format-patch -N $version)

mv $git_checkout/[0-9]*.patch .

# Remove any not to be applied.

rm -f *NOT-FOR-RPM*.patch

# Add the patches.

git add [0-9]*.patch

# Print out the patch lines.

echo

echo "--- Copy the following text into libguestfs.spec file"

echo

rhel_7_flag=no

echo "# Feature and backport patches."

for f in [0-9]*.patch; do

    n=`echo $f | awk -F- '{print $1}'`

    is_rhel_7=no

    if [ "$(echo $f | awk -F- '{print $2 $3}')" = "RHEL7" ]; then

	is_rhel_7=yes

    fi

    if [ "$rhel_7_flag" = "no" -a "$is_rhel_7" = "yes" ]; then

	echo

	echo "# RHEL 7 specific patches."

	rhel_7_flag=yes

    elif [ "$rhel_7_flag" = "yes" -a "$is_rhel_7" = "no" ]; then

	echo "$0: error: patch out of order near $f"

	exit 1

    fi

    echo "Patch$n:     $f"

done

echo

echo "--- End of text"