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#!/bin/bash
# Simplest possible way to generate a personal public-inbox feed
# using just bash and git. It is intended for use with git-send-email,
# but can be used with any tool that accepts custom sendmail command paths,
# like mutt.
#
# Simplest configuration is to set the following in your git config file,
# either per repository, or globally in ~/.gitconfig if you want a single
# developer feed for all your work.
#
# [sendemail]
# smtpserver = /path/to/bin/sendmail-pi-feed
#
# [sendemail "sendmail-pi-feed"]
# # the directory where to put the feed (will be created with --init)
# inboxdir = /path/to/toplevel/public-inbox-dir
# # if not set, the epoch will be 0, which is strongly suggested;
# # if you increment it for some reason, make sure you don't skip numbers
# epoch = 0
# # if defined, will pipe the stdin to this command as well, in case
# # you want to actually send out the patches in addition to writing them
# # to the public-inbox feed; leave undefined otherwise
# sendmail = /usr/sbin/sendmail
#
# Once this is done, run "sendmail-pi-feed --init" to initialize the feed.
# During the init process, you will be asked whether you would like to
# PGP-sign the commits, which is strongly recommended if you already
# have PGP-signing set up on your system.
#
# After the --init is complete, you can use "git send-email" as you
# normally would and all patches will be automatically added to the
# feed. You can then publish the feed on any git hosting service by
# setting a remote and performing a git push.
#
# If you would like to auto-push the feed, you can add an appropriate
# post-commit hook.
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
#
# Do we have some basic configuration?
INBOXDIR="$(git config --get sendemail.sendmail-pi-feed.inboxdir)"
if [[ -z "$INBOXDIR" ]]; then
echo "You need to add config entries to git-config first"
exit 1
fi
SENDMAIL="$(git config --get sendemail.sendmail-pi-feed.sendmail)"
EPOCH="$(git config --get sendemail.sendmail-pi-feed.epoch)"
if [[ -z $EPOCH ]]; then
EPOCH=0
fi
PIGITDIR="$INBOXDIR/$EPOCH"
PIGITDIR="${PIGITDIR/#\~/$HOME}"
if [[ $1 == '--init' ]]; then
if ! mkdir -p "$PIGITDIR"; then
echo "Could not mkdir $PIGITDIR"
exit 1
fi
cd "$PIGITDIR" || exit 1
git init
read -r -p "GPG-sign your feed? [Y/n] " YN
if [[ $YN != "n" ]]; then
git config commit.gpgSign true
fi
exit 0
fi
if [[ ! -d $PIGITDIR/.git ]]; then
echo "ERROR: $PIGITDIR/.git does not exist."
echo " Run this first: $0 --init"
exit 1
fi
cd "$PIGITDIR" || exit 1
cat > m
# Grab the subject line and other commit info
LOGLINE=$(grep "^Subject: " m | head -n 1 | sed 's/^Subject: //')
AUTHOR=$(grep "^From: " m | head -n 1 | sed 's/^From: //')
DATE=$(grep "^Date: " m | head -n 1 | sed 's/^Date: //')
if [[ -z $LOGLINE ]] || [[ -z $AUTHOR ]] || [[ -z $DATE ]]; then
echo "Could not find Subject/From/Date lines in stdin. Bailing out."
git reset --hard
git clean -f -d -x
exit 1
fi
git add m
if ! git commit --author "$AUTHOR" --date "$DATE" -m "$LOGLINE"; then
echo "ERROR: git-commit failed. Check the messages above"
exit $?
fi
if [[ -n $SENDMAIL ]]; then
echo "Invoking: $SENDMAIL"
$SENDMAIL "$@" < m
fi
echo "Remember to push $PIGITDIR"
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