deploy.sh

#!/bin/bash
set -e # Exit with nonzero exit code if anything fails
shopt -s extglob #Enable extended pattern matching

SOURCE_BRANCH="source"
TARGET_BRANCH="master"


# Pull requests and commits to other branches shouldn't try to deploy, just build to verify
if [ "$TRAVIS_PULL_REQUEST" != "false" -o "$TRAVIS_BRANCH" != "$SOURCE_BRANCH" ]; then
  echo "Skipping deploy; just doing a build."
  exit 0
fi

# Save some useful information
REPO=`git config remote.origin.url`
SSH_REPO=${REPO/https:\/\/github.com\//git@github.com:}
SHA=`git rev-parse --verify HEAD`

# Clone the existing gh-pages for this repo into out/
# Create a new empty branch if gh-pages doesn't exist yet (should only happen on first deply)
git clone $REPO deploy
cd deploy
git checkout $TARGET_BRANCH || git checkout --orphan $TARGET_BRANCH
cd ..

# Clean out existing contents
rm -rf deploy/!(.travis.yml|README.md) || exit 0

# Run our compile script
cp -a out/* deploy

# Now let's go have some fun with the cloned repo
cd deploy
git config user.name "Travis CI"
git config user.email "$COMMIT_AUTHOR_EMAIL"

# Commit the "changes", i.e. the new version.
# The delta will show diffs between new and old versions.
git add --all .
git commit -m "Deploy to GitHub Pages: ${SHA}"

# Get the deploy key by using Travis's stored variables to decrypt deploykey.enc
ENCRYPTED_KEY_VAR="encrypted_${ENCRYPTION_LABEL}_key"
ENCRYPTED_IV_VAR="encrypted_${ENCRYPTION_LABEL}_iv"
ENCRYPTED_KEY=${!ENCRYPTED_KEY_VAR}
ENCRYPTED_IV=${!ENCRYPTED_IV_VAR}
openssl aes-256-cbc -K $ENCRYPTED_KEY -iv $ENCRYPTED_IV -in ../deploykey.enc -out ../deploykey -d
chmod 600 ../deploykey
eval `ssh-agent -s`
ssh-add ../deploykey

# Now that we're all set up, we can push.
git push $SSH_REPO $TARGET_BRANCH