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111 lines
2.8 KiB
Bash
111 lines
2.8 KiB
Bash
#!/bin/bash
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# Create a patch which backports the support/ subdirectory.
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# Copyright (C) 2017-2020 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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# The GNU C Library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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# The GNU C Library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public
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# License along with the GNU C Library; if not, see
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# <https://www.gnu.org/licenses/>.
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# This script does not backport the Makefile tweaks outside the
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# support/ directory (which need to be backported separately), or the
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# changes to test-skeleton.c (which should not be backported).
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set -e
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export LC_ALL=C
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export GIT_CONFIG=/dev/null
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export GTT_CONFIG_NOSYSTEM=0
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export GIT_PAGER=
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usage () {
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cat >&2 <<EOF
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usage: $0 {patch|commit}
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EOF
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exit 1
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}
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if test $# -ne 1 ; then
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usage
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fi
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command="$1"
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case "$command" in
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patch|commit)
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;;
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*)
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usage
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;;
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esac
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# The upstream branch to work on.
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branch=origin/master
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# The commit which added the support/ directory.
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initial_commit=c23de0aacbeaa7a091609b35764bed931475a16d
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# We backport the support directory and this script. Directories need
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# to end in a /.
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patch_targets="support/ scripts/backport-support.sh"
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latest_commit="$(git log --max-count=1 --pretty=format:%H "$branch" -- \
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$patch_targets)"
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# Simplify the branch name somewhat for reporting.
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branch_name="$(echo "$branch" | sed s,^origin/,,)"
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command_patch () {
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cat <<EOF
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This patch creates the contents of the support/ directory up to this
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upstream commit on the $branch_name branch:
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EOF
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git log --max-count=1 "$latest_commit"
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echo
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git diff "$initial_commit"^.."$latest_commit" $patch_targets
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echo "# Before applying the patch, run this command:" >&2
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echo "# rm -rf $patch_targets" >&2
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}
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command_commit () {
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git status --porcelain | while read line ; do
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echo "error: working copy is not clean, cannot commit" >&2
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exit 1
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done
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for path in $patch_targets; do
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echo "# Processing $path" >&2
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case "$path" in
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[a-zA-Z0-9]*/)
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# Directory.
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git rm --cached --ignore-unmatch -r "$path"
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rm -rf "$path"
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git read-tree --prefix="$path" "$latest_commit":"$path"
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git checkout "$path"
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;;
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*)
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# File.
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git show "$latest_commit":"$path" > "$path"
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git add "$path"
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esac
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done
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git commit -m "Synchronize support/ infrastructure with $branch_name
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This commit updates the support/ subdirectory to
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commit $latest_commit
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on the $branch_name branch.
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"
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}
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command_$command
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