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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# Copyright (C) 2019 Daniel Borkmann <daniel@iogearbox.net>
usage()
{
cat <<-EOF
usage: pw-pull [-h] [-t TREE] [-s SINCE_COMMIT]
EOF
exit
}
remote=""
since=""
tree=""
today=$(date +%Y-%m-%d)
while true; do
case "$1" in
-s | --since ) since="$2"; shift 2 ;;
-t | --tree ) tree="$2"; shift 2 ;;
-h | --help ) usage; break ;;
* ) break ;;
esac
done
[ -z "$tree" ] && usage
case $tree in
bpf-next ) remote=(net-next git://git.kernel.org/pub/scm/linux/kernel/git/bpf/$tree.git) ;;
bpf ) remote=(net git://git.kernel.org/pub/scm/linux/kernel/git/bpf/$tree.git) ;;
* ) usage ;;
esac
if [ -z "$since" ]; then
git fetch ${remote[0]}
branch=$(git rev-parse --abbrev-ref HEAD)
since=$(git merge-base $branch ${remote[0]}/master)
fi
[ -z "$since" ] && usage
old=$(git log $since -n 1 --format=%ct)
new=$(git log HEAD -n 1 --format=%ct)
delta=$((($new - $old)/(60*60*24)+1))
count=$(git rev-list --no-merges --count $since...HEAD)
thanks=$(git log --no-merges $since...HEAD --format="%b" | awk '$1 ~ /Reported-by:|Acked-by:|Reviewed-by:|Tested-by:/' | cut -d ' ' -f2- | cut -d '<' -f1 | awk '{$1=$1};1' | grep -v '@' | sort | uniq | sort -n | sed ':a;N;$!ba;s/\n/, /g' | fold -s -w73)
file="pr-$tree-$today.patch"
git request-pull $since ${remote[1]} > $file
what=$(cat $file | grep "files changed")
echo -e "Subject: pull-request: $tree $today\n\nHi David, hi Jakub,\n\nThe following pull-request contains BPF updates for your *${remote[0]}* tree.\n\nWe've added $count non-merge commits during the last $delta day(s) which contain\na total of$what.\n\nThe main changes are:\n\n1) ..., from XYZ. Among others:\n\n - Blah blah sub item.\n\n2) ..., from ABC.\n\nPlease consider pulling these changes from:\n\n git://git.kernel.org/pub/scm/linux/kernel/git/bpf/$tree.git\n\nThanks a lot!\n\nAlso thanks to reporters, reviewers and testers of commits in this pull-request:\n\n$thanks\n\n----------------------------------------------------------------\n\n$(cat $file)" > $file
bug=$(grep -c gitolite $file)
if [ "$bug" -gt "0" ]; then
echo "PR not generated: using gitolite url, not public one!"
rm -f $file
else
echo "PR: $file"
fi
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