#!/bin/bash

set -e

unset LANG

unset ${!LC_*}

read td < <(mktemp --directory --tmpdir=/dev/shm .XXX)

trap "rm -rf '${td}'" EXIT

#

d_extract="${td}/e"

d_old="${td}/o"

d_new="${td}/n"

#

read vlc_beta_pkg < <(readlink -f "$1")

read vlc_git < <(readlink -f "$2")

#

test -f "${vlc_git}/.git/config"

test -f "${vlc_beta_pkg}/.osc/_package"

read pkg < "$_"

test "${pkg}" = 'vlc-beta'

mkdir "${d_extract}" "${d_old}" "${d_new}"

pushd "${vlc_beta_pkg}" > /dev/null

for patch in *.patch

do

    sed '

    /^---[[:blank:]]/d

    /^+++[[:blank:]]/d

    /^@@[[:blank:]]/d

    ' < "${patch}" > "${d_old}/${patch}"

done

popd > /dev/null

#

pushd "${vlc_git}" > /dev/null

git --no-pager checkout master

git --no-pager pull

git --no-pager log --oneline -n1

git --no-pager checkout vlc-beta

git --no-pager rebase master

git --no-pager format-patch --no-base --quiet --output-directory "${d_extract}" master..HEAD

#

sed -i -n '

: sep

n

/^---$/b stat

b sep

: stat

n

/^$/b body

b stat

: body

n

/^diff[[:blank:]]\+--git[[:blank:]]\+/b body

/^index[[:blank:]]\+[0-9a-f]\+/b body

p

b body

' "${d_extract}"/*.patch

popd > /dev/null

#

pushd "${d_extract}" > /dev/null

for patch in *.patch

do

    o="${patch}"

    n="${patch#*-}"

    mv "${o}" "${n}"

    sed '

    /^---[[:blank:]]/d

    /^+++[[:blank:]]/d

    /^@@[[:blank:]]/d

    ' < "${n}" > "${d_new}/${n}"

    if diff -u "${d_old}/${n}" "${d_new}/${n}"

    then

        rm "${n}"

    else

        mv -vit "${vlc_beta_pkg}" "${n}"

    fi

done

popd > /dev/null

pushd "${vlc_beta_pkg}" > /dev/null

osc st

popd > /dev/null

​