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Let TravisCI automatically rebuild README.md when pushing

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Michele Locati 2018-04-12 09:17:21 +02:00
parent e0965d93e3
commit 830d462bd8
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scripts/travisci-update-readme Executable file
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#!/bin/sh
# Let's set a sane environment
set -o errexit
set -o nounset
UPDATE_README_COMMIT_AUTHOR_NAME='Travis CI'
UPDATE_README_COMMIT_AUTHOR_EMAIL='michele@locati.it'
UPDATE_README_COMMIT_MESSAGE='Automatically update README.md'
WATCHED_FILES='data/special-requirements data/supported-extensions scripts/common scripts/update-readme scripts/travisci-update-readme'
echo 'Checking environment'
if test -z "${TRAVIS_BUILD_DIR:-}" -o -z "${TRAVIS_BRANCH:-}" -o -z "${TRAVIS_EVENT_TYPE:-}" -o -z "${TRAVIS_REPO_SLUG:-}"
then
echo 'Not in a TravisCI environment' >&2
exit 1
fi
if test -z "${GUTHUB_ACCESS_TOKEN:-}"
then
echo 'GitHub access token not set' >&2
# To create it:
# - go to https://github.com/settings/tokens/new?scopes=repo
# - create a new token
# - sudo apt install -y build-essential ruby ruby-dev
# - sudo gem install travis
# - travis encrypt -r <owner>/<repo> GUTHUB_ACCESS_TOKEN=<TOKEN>
# - Add to .travis.yml:
# env:
# global:
# - secure: "encrypted string"
exit 1
fi
if test "${TRAVIS_EVENT_TYPE}" != 'push'
then
echo 'This script should only be run in push builds' >&2
exit 1
fi
LAST_AUTO_UPDATED_IN="$(git -C "${TRAVIS_BUILD_DIR}" rev-list --max-count 1 --author "<${UPDATE_README_COMMIT_AUTHOR_EMAIL}>" --grep "${UPDATE_README_COMMIT_MESSAGE}" "${TRAVIS_BRANCH}")"
if test -z "${LAST_AUTO_UPDATED_IN}"
then
printf 'Rebuild of README.md enabled (no previous automatic refresh of it in branch %s)\n' "${TRAVIS_BRANCH}"
else
MODIFIED_FILES_SINCE="$(git -C "${TRAVIS_BUILD_DIR}" diff --name-only "${LAST_AUTO_UPDATED_IN}...${TRAVIS_BRANCH}")"
if test -z "$(commonElements "${WATCHED_FILES}" "${MODIFIED_FILES_SINCE}")"
then
printf 'Rebuild of README.md not needed (no relevant files changed in branch %s since commit %s)\n' "${TRAVIS_BRANCH}" "${LAST_AUTO_UPDATED_IN}"
exit 0
fi
printf 'Rebuild of README.md enabled (relevant files changed in branch %s since commit %s)\n' "${TRAVIS_BRANCH}" "${LAST_AUTO_UPDATED_IN}"
fi
echo 'Updating README.md'
"${TRAVIS_BUILD_DIR}/scripts/update-readme"
set -x
if test -z "$(git -C "${TRAVIS_BUILD_DIR}" ls-files -m | grep -E '^README\.md$')"
then
echo 'README.md has not been changed'
exit 0
fi
echo 'Committing changes to README.md'
git -C "${TRAVIS_BUILD_DIR}" config user.name "${UPDATE_README_COMMIT_AUTHOR_NAME}"
git -C "${TRAVIS_BUILD_DIR}" config user.email "${UPDATE_README_COMMIT_AUTHOR_EMAIL}"
git -C "${TRAVIS_BUILD_DIR}" add README.md
git -C "${TRAVIS_BUILD_DIR}" commit -m "${UPDATE_README_COMMIT_MESSAGE}"
printf 'Adding %s remote\n' "${TRAVIS_REPO_SLUG}"
git remote add deploy "https://${GUTHUB_ACCESS_TOKEN}@github.com/${TRAVIS_REPO_SLUG}.git"
printf 'Pushing to %s\n' "${TRAVIS_REPO_SLUG}"
git push deploy "${TARGET_BRANCH}"
git -C "${TRAVIS_BUILD_DIR}" push add deploy "https://${GUTHUB_ACCESS_TOKEN}@github.com/${TRAVIS_REPO_SLUG}.git"
echo 'Done.'