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#!/usr/bin/env bash
#
# Patch sources using git-am, aligning things to use git-format-patch for
# update-patches.
#
# (c) 2021 Phil Sutter <phil@nwl.cc>
#
# Based on the classic patch.sh, written by:
#
# (c) 2006, 2007 Thorsten Glaser <tg@freewrt.org>
# (c) 2002 Erik Andersen <andersen@codepoet.org>
[[ -n $BASH_VERSION ]] && shopt -s extglob
# Set directories from arguments, or use defaults.
targetdir=${1-.}
patchdir=${2-../patches}
patchpattern=${3-*}
if [ ! -d "${targetdir}" ] ; then
echo "Aborting. '${targetdir}' is not a directory."
exit 1
fi
if [ ! -d "${patchdir}" ] ; then
echo "Aborting. '${patchdir}' is not a directory."
exit 0
fi
wd=$(pwd)
cd "${targetdir}"
if [ ! -d .git ]; then
# drop leftover .gitignores in non-git sources, they
# might prevent us from patching 'temporary' files
# which are still present in the tarball.
find . -name .gitignore -delete
git init
git add .
elif [ -e .git/rebase-apply ]; then
git am --abort
fi
i=0
patch_tmp=$(printf ".git/patch_tmp/%04d" $i)
while [ -d $patch_tmp ]; do
let "i++"
patch_tmp=$(printf ".git/patch_tmp/%04d" $i)
done
mkdir -p $patch_tmp
patch_series=$(printf "%04d" $i)
git commit --allow-empty --no-signoff --no-gpg-sign \
--author="OpenADK <wbx@openadk.org>" \
-m "OpenADK patch marker: $patch_series"
cd $wd
cd $patchdir
for i in $(eval echo ${patchpattern}); do
test -e "$i" || continue
i=$patchdir/$i
cd $wd
case $i in
*.gz)
type="gzip"; uncomp="gunzip -dc"; ;;
*.bz)
type="bzip"; uncomp="bunzip -dc"; ;;
*.bz2)
type="bzip2"; uncomp="bunzip2 -dc"; ;;
*.zip)
type="zip"; uncomp="unzip -d"; ;;
*.Z)
type="compress"; uncomp="uncompress -c"; ;;
*)
type="plaintext"; uncomp="cat"; ;;
esac
[ -d "${i}" ] && echo "Ignoring subdirectory ${i}" && continue
echo "$(basename $i)" >>${targetdir}/${patch_tmp}/__patchfiles__
patchname="$(basename -s .gz -s .bz -s .bz2 -s .zip -s .Z -s .patch $i)"
{
if ! grep -q '^Subject: ' ${i}; then
echo "From: OpenADK <wbx@openadk.org>"
echo "Subject: [PATCH] ${patchname#[0-9]*-}"
echo ""
fi
${uncomp} ${i}
} >${targetdir}/${patch_tmp}/${patchname}.patch
cd $patchdir
done
# no patches to apply? bail out
[ -e ${targetdir}/${patch_tmp}/__patchfiles__ ] || {
rmdir ${targetdir}/${patch_tmp}
exit 0
}
# provide backwards compatibility to old style using 'patch' program
# XXX: this is unsafe and should be dropped at some point
am_opts="-C1"
cd ${wd}
realpath $patchdir >${targetdir}/${patch_tmp}/__patchdir__
cd ${targetdir}
git am $am_opts ${patch_tmp}/*.patch
if [ $? != 0 ] ; then
echo "git-am failed! Please fix patches!"
exit 1
fi
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