chore: Pull gh-pages building to deploy script (pull #445)

Move the logic for doing the manual gh-pages deployment to the built-in
Travis-CI “script” deployment.
This allows all branches to be built and tested, but only the master
branch to be deployed.

.travis.yml

@@ -3,40 +3,14 @@ language: node_js
 node_js:
   - "node"
 
-env:
-  global:
-    - GH_REF: github.com/w3c/aria-practices.git
-
-addons:
-  apt:
-    packages:
-      - oracle-java8-installer
-      - oracle-java8-set-default
-
 git:
   depth: 3
 
-branches:
-  only:
-    master
-
-install:
-  - npm install && npm test
-
-before_script:
-  - git config --global user.email "[email protected]"
-  - git config --global user.name "michael-n-cooper"
-
-script:
-  - cd ../..
-  - mkdir gh-pages
-  - cd gh-pages
-  - git clone --depth=1 --branch=gh-pages https://github.com/w3c/aria-practices.git
-  - cd aria-practices
-  - curl "https://labs.w3.org/spec-generator/?type=respec&url=https://rawgit.com/w3c/aria-practices/master/aria-practices.html" -o index.html -f --retry 3
-  - cp -r ../../w3c/aria-practices/examples .
+before_deploy: scripts/travis-before_deploy.sh
 
-after_success:
-  - git add .
-  - git commit -m "Generated by TRAVIS-CI"
-  - git push "https://${GH_TOKEN}@${GH_REF}" gh-pages > /dev/null 2>&1
+deploy:
+  provider: script
+  skip_cleanup: true
+  script: /tmp/deploy/travis-deploy.sh
+  on:
+    branch: master

scripts/travis-before_deploy.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+# Stash the latest examples
+mkdir /tmp/aria-practices
+cp -R common /tmp/aria-practices
+cp -R examples /tmp/aria-practices
+cp -R img /tmp/aria-practices
+cp .gitignore /tmp/aria-practices
+cp .editorconfig /tmp/aria-practices
+cp README.md /tmp/aria-practices
+
+mkdir /tmp/deploy
+cp scripts/travis-deploy.sh /tmp/deploy/
+
+# Grab the gh-pages branch
+git fetch --depth=1 origin gh-pages:gh-pages
+git checkout gh-pages
+curl "https://labs.w3.org/spec-generator/?type=respec&url=https://rawgit.com/${TRAVIS_REPO_SLUG}/master/aria-practices.html" -o index.html -f --retry 3
+
+# Clean and update the examples
+rm -rf common/
+rm -rf examples/
+rm -rf img/
+cp -R /tmp/aria-practices/ ..

scripts/travis-deploy.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+if [ -z "$GH_TOKEN" ]; then
+  echo "To deploy to your gh-pages branch, the GH_TOKEN needs to be defined by following https://docs.travis-ci.com/user/environment-variables/#Defining-Variables-in-Repository-Settings"
+  exit 1
+fi
+
+echo 'Pushing built changes'
+git config --global user.email "[email protected]"
+git config --global user.name "michael-n-cooper"
+git config remote.origin.url "https://${GH_TOKEN}@github.com/${TRAVIS_REPO_SLUG}.git"
+git commit -am "Generated by TRAVIS-CI ${TRAVIS_COMMIT}" -m "${TRAVIS_COMMIT_MESSAGE}"
+git push --set-upstream origin gh-pages > /dev/null 2>&1