[muzi] adding script to commit to github from travis-ci ✊

.travis.yml

@@ -10,13 +10,10 @@ script:
 after_script: # Upload coverage reports
   - COVERALLS_REPO_TOKEN=$coveralls_repo_token npm run coveralls
 
-after_success: |
-  if [ -n "$GITHUB_API_KEY" ]; then
-    git checkout $TRAVIS_PULL_REQUEST
-    npm run up-version
-    git -c user.name='travis' -c user.email='travis'
-    git push origin $TRAVIS_PULL_REQUEST
-  fi
+after_success:
+  - npm run up-version
+  - ./travis-ci-git-commit.sh
+
 
 notifications:
   email:

travis-ci-git-commit.sh

@@ -0,0 +1,62 @@
+#!/bin/bash
+# function to make a commit on a branch in a Travis CI build
+# be sure to avoid creating a Travis CI fork bomb
+# see https://github.com/travis-ci/travis-ci/issues/1701
+function travis-branch-commit() {
+    local head_ref branch_ref
+    head_ref=$(git rev-parse HEAD)
+    if [[ $? -ne 0 || ! $head_ref ]]; then
+        err "failed to get HEAD reference"
+        return 1
+    fi
+    branch_ref=$(git rev-parse "$TRAVIS_BRANCH")
+    if [[ $? -ne 0 || ! $branch_ref ]]; then
+        err "failed to get $TRAVIS_BRANCH reference"
+        return 1
+    fi
+    if [[ $head_ref != $branch_ref ]]; then
+        msg "HEAD ref ($head_ref) does not match $TRAVIS_BRANCH ref ($branch_ref)"
+        msg "someone may have pushed new commits before this build cloned the repo"
+        return 0
+    fi
+    if ! git checkout "$TRAVIS_BRANCH"; then
+        err "failed to checkout $TRAVIS_BRANCH"
+        return 1
+    fi
+
+    if ! git add --all .; then
+        err "failed to add modified files to git index"
+        return 1
+    fi
+    # make Travis CI skip this build
+    if ! git commit -m "Travis CI update [ci skip]"; then
+        err "failed to commit updates"
+        return 1
+    fi
+    # add to your .travis.yml: `branches\n  except:\n  - "/\\+travis\\d+$/"\n`
+    local git_tag=SOME_TAG_TRAVIS_WILL_NOT_BUILD+travis$TRAVIS_BUILD_NUMBER
+    if ! git tag "$git_tag" -m "Generated tag from Travis CI build $TRAVIS_BUILD_NUMBER"; then
+        err "failed to create git tag: $git_tag"
+        return 1
+    fi
+    local remote=origin
+    if [[ $GITHUB_API_KEY ]]; then
+        remote=https://$GITHUB_API_KEY@github.com/$TRAVIS_REPO_SLUG
+    fi
+    if [[ $TRAVIS_BRANCH != master ]]; then
+        msg "not pushing updates to branch $TRAVIS_BRANCH"
+        return 0
+    fi
+    if ! git push --quiet --follow-tags "$remote" "$TRAVIS_BRANCH" > /dev/null 2>&1; then
+        err "failed to push git changes"
+        return 1
+    fi
+}
+
+function msg() {
+    echo "travis-commit: $*"
+}
+
+function err() {
+    msg "$*" 1>&2
+}