OpenInv/scripts/generate_changelog.sh
2021-03-18 16:38:41 -04:00

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#!/bin/bash
#
# Copyright (C) 2011-2021 lishid. All rights reserved.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, version 3.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# A script for generating a changelog from Git.
#
# Note that this script is designed for use in GitHub Actions, and is not
# particularly robust nor configurable. Run from project parent directory.
# Query GitHub for the username of the given email address.
# Falls through to the given author name.
lookup_email_username() {
lookup=$(curl -G --data-urlencode "q=$1 in:email" https://api.github.com/search/users -H 'Accept: application/vnd.github.v3+json' | grep '"login":' | sed -e 's/^.*": "//g' -e 's/",.*$//g')
if [[ $lookup ]]; then
echo -n "@$lookup"
else
echo "$2"
fi
}
# Use formatted log to pull authors list
authors_raw=$(git log --pretty=format:"%ae|%an" "$(git describe --tags --abbrev=0 @^)"..@)
readarray -t authors <<<"$authors_raw"
declare -A author_data
for author in "${authors[@]}"; do
# Match author email
author_email=${author%|*}
# Convert to lower case
author_email=${author_email,,}
# Match author name
author_name=${author##*|}
if [[ -n ${author_data[$author_email]} ]]; then
# Skip emails we already have data for
continue
fi
# Fetch and store author GitHub username by email
author_data[$author_email]=$(lookup_email_username "$author_email" "$author_name")
done
# Fetch actual formatted changelog
changelog=$(git log --pretty=format:"%s (%h) - %ae" "$(git describe --tags --abbrev=0 @^)"..@)
for author_email in "${!author_data[@]}"; do
# Ignore case when matching
shopt -s nocasematch
# Match and replace email
changelog=${changelog//$author_email/${author_data[$author_email]}}
done
echo "GENERATED_CHANGELOG<<EOF${changelog}EOF" >> "$GITHUB_ENV"