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metamask-extension/development/auto-changelog.sh
Mark Stacey 09eca3cc60
Improve auto changelog script (#6753)
* Improve auto changelog script

The auto changelog script was creating empty or invalid entries in a
number of different cases, such as when the body of a commit spanned
multiple lines. This has been fixed, and the following additional
improvements have been made:

- Error handling (it will now crash upon encountering an error)
- Commits without a PR number in the subject are listed without the PR
prefix
- Invalid shellcheck warnings ignored
- Only the first line of the commit body is shown
- Carriage returns are stripped (some commits contain them)

This script should be more reliable for helping to manually update the
changelog. It's still not sufficiently robust to use as part of an
automated process - I don't think that's feasible without maintaining
stricter control over commit messages conventions and/or merge
strategies.
2019-07-11 11:08:23 -03:00

61 lines
1.8 KiB
Bash
Executable File

#!/usr/bin/env bash
set -e
set -u
set -o pipefail
readonly URL='https://github.com/MetaMask/metamask-extension'
git fetch --tags
most_recent_tag="$(git describe --tags "$(git rev-list --tags --max-count=1)")"
git rev-list "${most_recent_tag}"..HEAD | while read commit
do
subject="$(git show -s --format="%s" "$commit")"
# Squash & Merge: the commit subject is parsed as `<description> (#<PR ID>)`
if grep -E -q '\(#[[:digit:]]+\)' <<< "$subject"
then
pr="$(awk '{print $NF}' <<< "$subject" | tr -d '()')"
prefix="[$pr]($URL/pull/${pr###}): "
description="$(awk '{NF--; print $0}' <<< "$subject")"
# Merge: the PR ID is parsed from the git subject (which is of the form `Merge pull request
# #<PR ID> from <branch>`, and the description is assumed to be the first line of the body.
# If no body is found, the description is set to the commit subject
elif grep -E -q '#[[:digit:]]+\sfrom' <<< "$subject"
then
pr="$(awk '{print $4}' <<< "$subject")"
prefix="[$pr]($URL/pull/${pr###}): "
first_line_of_body="$(git show -s --format="%b" "$commit" | head -n 1 | tr -d '\r')"
if [[ -z "$first_line_of_body" ]]
then
description="$subject"
else
description="$first_line_of_body"
fi
# Normal commits: The commit subject is the description, and the PR ID is omitted.
else
pr=''
prefix=''
description="$subject"
fi
# add entry to CHANGELOG
if [[ "$OSTYPE" == "linux-gnu" ]]
then
# shellcheck disable=SC1004
sed -i'' '/## Current Develop Branch/a\
- '"$prefix$description"''$'\n' CHANGELOG.md
else
# shellcheck disable=SC1004
sed -i '' '/## Current Develop Branch/a\
- '"$prefix$description"''$'\n' CHANGELOG.md
fi
done
echo 'CHANGELOG updated'