rustc-dev-guide/ci/linkcheck.sh

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#!/usr/bin/env bash
set -e
set -o pipefail
# https://docs.travis-ci.com/user/environment-variables/#default-environment-variables
if [ "$TRAVIS_EVENT_TYPE" = "cron" ] ; then # running in cron job
FLAGS=""
echo "Doing full link check."
set -x
elif [ "$CI" = "true" ] ; then # running in PR CI build
if [ -z "$TRAVIS_COMMIT_RANGE" ]; then
echo "error: unexpected state: TRAVIS_COMMIT_RANGE must be non-empty in CI"
exit 1
fi
CHANGED_FILES=$(git diff --name-only $TRAVIS_COMMIT_RANGE | tr '\n' ' ')
FLAGS="--no-cache -f $CHANGED_FILES"
echo "Checking files changed in $TRAVIS_COMMIT_RANGE: $CHANGED_FILES"
set -x
else # running locally
COMMIT_RANGE=master...
CHANGED_FILES=$(git diff --name-only $COMMIT_RANGE | tr '\n' ' ')
FLAGS="-f $CHANGED_FILES"
echo "Checking files changed in $COMMIT_RANGE: $CHANGED_FILES"
fi
exec mdbook-linkcheck $FLAGS -- $TRAVIS_BUILD_DIR