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- #!/bin/bash
- #
- # Our travis setup relies heavily on rapidly cancelling
- # jobs that are unneeded. For example, if only files
- # in aspnet/ were modified, then we don't need to run
- # a job that verifies the framework tests in go/
- #
- # Detecting what files have been changed for a pull
- # request is a a bit tricky, as Travis-CI currently
- # does not provide a commit range for pull requests
- # (see travis-ci/travis-ci#1719). This script provides
- # a commit range by adding a branch prbase on the
- # first commit in the pull request and a branch
- # prhead on the commit that travis is currently
- # building.
- # This makes
- # git diff prbase:prhead
- # equivalent to what you'd expect from
- # git diff $TRAVIS_COMMIT_RANGE
- if [ "${TRAVIS_PULL_REQUEST}" = "false" ]
- then
- echo "This is not a pull request, nothing to do"
- exit 0
- fi
- # Find the first commit in the pull request
- # - download github PR patch file
- # - grep commit SHA from first line
- # - remove newline
- PR_FIRST=$(curl -s https://github.com/${TRAVIS_REPO_SLUG}/pull/${TRAVIS_PULL_REQUEST}.patch | head -1 | grep -o -E '\b[0-9a-f]{40}\b' | tr -d '\n')
- # Create new branch for first commit in pull request
- git branch -f prbase ${PR_FIRST}
- # Create new branch for last commit in pull request
- git branch -f prhead ${TRAVIS_COMMIT}
- echo "Set prbase branch to commit ${PR_FIRST}"
- echo "Set prhead branch to commit ${TRAVIS_COMMIT}"
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