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#!/usr/bin/env bash
#
# This script obtains the changelog to be introduced in the new release.
set -eu
REMOTE_LINK="https://github.com/paritytech/jsonrpsee/pull/"
function usage() {
cat <<HELP_USAGE
This script obtains the changelog between the latest release tag and origin/master.
Usage: $0 [-h]
-h Print help message.
HELP_USAGE
}
function log_error() {
echo "Error:" "$@" >&2
exit 1
}
function log_info() {
echo -e "[+]" "$@"
}
while getopts "h?" opt; do
case "$opt" in
h|\?)
usage
exit 0
;;
esac
done
GIT_BIN=$(which git) || log_error 'git is not installed. Please follow https://github.com/git-guides/install-git for instructions'
# Generate the changelog between the provided tag and origin/master.
function generate_changelog() {
local tag="$1"
prs=$($GIT_BIN --no-pager log --pretty=format:"%s" "$tag"..origin/master) || log_error 'Failed to obtain commit list'
log_info "Changelog\n"
while IFS= read -r line; do
# Obtain the pr number from each line. The regex should match, as provided by the previous grep.
if [[ $line =~ "(#"([0-9]+)")"$ ]]; then
pr_number="${BASH_REMATCH[1]}"
else
continue
fi
# Generate a valid PR link.
pr_link="$REMOTE_LINK$pr_number"
# Generate the link as markdown.
pr_md_link=" ([#$pr_number]($pr_link))"
# Print the changelog line as `- commit-title pr-link`.
echo "$line" | awk -v var="$pr_md_link" '{NF--; printf "- "; printf; print var}'
done <<< "$prs"
}
# Get latest release tag.
tag=$($GIT_BIN describe --match "v[0-9]*" --abbrev=0 origin/master) || log_error 'Failed to obtain the latest release tag'
log_info "Latest release tag: $tag"
generate_changelog "$tag"