From 3a36dbd9342f0a68975ed4ee9f3745d5b8ed15df Mon Sep 17 00:00:00 2001
From: Daniel Rudolf <github.com@daniel-rudolf.de>
Date: Sun, 24 Apr 2016 03:25:44 +0200
Subject: [PATCH] Build system: Add automatic version file updates for
 picocms.org

---
 _build/deploy-phpdoc-release.sh | 25 +++++++++++++--
 _build/generate-version.sh      | 57 +++++++++++++++++++++++++++++++++
 2 files changed, 79 insertions(+), 3 deletions(-)
 create mode 100755 _build/generate-version.sh

diff --git a/_build/deploy-phpdoc-release.sh b/_build/deploy-phpdoc-release.sh
index 42f11e2..8d3410e 100755
--- a/_build/deploy-phpdoc-release.sh
+++ b/_build/deploy-phpdoc-release.sh
@@ -6,8 +6,11 @@ fi
 if [ "$DEPLOY_VERSION_BADGE" != "true" ]; then
     echo "Skipping version badge deployment because it has been disabled"
 fi
-if [ "$DEPLOY_PHPDOC_RELEASES" != "true" ] || [ "$DEPLOY_VERSION_BADGE" != "true" ]; then
-    [ "$DEPLOY_PHPDOC_RELEASES" != "true" ] && [ "$DEPLOY_VERSION_BADGE" != "true" ] && exit 0 || echo
+if [ "$DEPLOY_VERSION_FILE" != "true" ]; then
+    echo "Skipping version file deployment because it has been disabled"
+fi
+if [ "$DEPLOY_PHPDOC_RELEASES" != "true" ] || [ "$DEPLOY_VERSION_BADGE" != "true" ] || [ "$DEPLOY_VERSION_FILE" != "true" ]; then
+    [ "$DEPLOY_PHPDOC_RELEASES" != "true" ] && [ "$DEPLOY_VERSION_BADGE" != "true" ] && [ "$DEPLOY_VERSION_FILE" != "true" ] && exit 0 || echo
 fi
 
 DEPLOYMENT_ID="${TRAVIS_BRANCH//\//_}"
@@ -51,7 +54,7 @@ if [ "$DEPLOY_VERSION_BADGE" == "true" ]; then
         "release" "$TRAVIS_TAG" "blue"
 
     # commit version badge
-    echo "Committing changes..."
+    echo "Committing version badge..."
     git add "$DEPLOYMENT_DIR/badges/pico-version.svg"
     git commit \
         --message="Update version badge for $TRAVIS_TAG" \
@@ -60,6 +63,22 @@ if [ "$DEPLOY_VERSION_BADGE" == "true" ]; then
     echo
 fi
 
+# update version file
+if [ "$DEPLOY_VERSION_FILE" == "true" ]; then
+    generate-version.sh \
+        "$DEPLOYMENT_DIR/_data/version.yml" \
+        "${TRAVIS_TAG#v}"
+
+    # commit version file
+    echo "Committing version file..."
+    git add "$DEPLOYMENT_DIR/_data/version.yml"
+    git commit \
+        --message="Update version file for $TRAVIS_TAG" \
+        "$DEPLOYMENT_DIR/_data/version.yml"
+    [ $? -eq 0 ] || exit 1
+    echo
+fi
+
 # deploy
 github-deploy.sh "$TRAVIS_REPO_SLUG" "tags/$TRAVIS_TAG" "$TRAVIS_COMMIT"
 [ $? -eq 0 ] || exit 1
diff --git a/_build/generate-version.sh b/_build/generate-version.sh
new file mode 100755
index 0000000..4a3ec8b
--- /dev/null
+++ b/_build/generate-version.sh
@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+
+##
+# Updates the version file
+#
+# @author  Daniel Rudolf
+# @link    http://picocms.org
+# @license http://opensource.org/licenses/MIT
+#
+
+set -e
+
+# parameters
+VERSION_FILE_PATH="$1"  # target file path
+VERSION_FULL="$2"       # full version string (e.g. 1.0.0-beta.1+7b4ad7f)
+
+# print parameters
+echo "Generating version file..."
+printf 'VERSION_FILE_PATH="%s"\n' "$VERSION_FILE_PATH"
+printf 'VERSION_FULL="%s"\n' "$VERSION_FULL"
+echo
+
+# evaluate version constraint (see http://semver.org/)
+printf 'Evaluating version constraint...\n'
+if [[ "$VERSION_FULL" =~ ^([0-9]+)\.([0-9]{1,2})\.([0-9]{1,2})(-([0-9A-Za-z\.\-]+))?(\+([0-9A-Za-z\.\-]+))?$ ]]; then
+    VERSION_MAJOR="${BASH_REMATCH[1]}"
+    VERSION_MINOR="${BASH_REMATCH[2]}"
+    VERSION_PATCH="${BASH_REMATCH[3]}"
+    VERSION_SUFFIX="${BASH_REMATCH[5]}"
+    VERSION_BUILD="${BASH_REMATCH[7]}"
+
+    VERSION_MILESTONE="$VERSION_MAJOR.$VERSION_MINOR"
+    VERSION_NAME="$VERSION_MAJOR.$VERSION_MINOR.$VERSION_PATCH"
+    VERSION_ID="$VERSION_MAJOR$(printf '%02d' "$VERSION_MINOR")$(printf '%02d' "$VERSION_PATCH")"
+else
+    echo "Invalid version constraint; skipping..." >&2
+    exit 1
+fi
+
+# generate version file
+printf 'Updating version file...\n'
+echo -n "" > "$VERSION_FILE_PATH"
+exec 3> "$VERSION_FILE_PATH"
+
+printf 'full: %s\n' "$VERSION_FULL" >&3
+printf 'name: %s\n' "$VERSION_NAME" >&3
+printf 'milestone: %s\n' "$VERSION_MILESTONE" >&3
+printf 'id: %d\n' "$VERSION_ID" >&3
+printf 'major: %d\n' "$VERSION_MAJOR" >&3
+printf 'minor: %d\n' "$VERSION_MINOR" >&3
+printf 'patch: %d\n' "$VERSION_PATCH" >&3
+printf 'suffix: %s\n' "$VERSION_SUFFIX" >&3
+printf 'build: %s\n' "$VERSION_BUILD" >&3
+
+exec 3>&-
+
+echo