From 51c0fa2636865df308c967ca5a5d2e61ed006ef2 Mon Sep 17 00:00:00 2001
From: Marcin Kurczewski <mkurczew@gmail.com>
Date: Tue, 2 Sep 2014 19:46:53 +0200
Subject: [PATCH] Added JS+CSS+HTML compiler

---
 composer.json           |   4 +-
 public_html/.gitignore  |   1 +
 public_html/.htaccess   |   3 +
 public_html/compile.php | 133 ++++++++++++++++++++++++++++++++++++++++
 4 files changed, 140 insertions(+), 1 deletion(-)
 create mode 100644 public_html/.gitignore
 create mode 100644 public_html/compile.php

diff --git a/composer.json b/composer.json
index f055dc53..025a45e3 100644
--- a/composer.json
+++ b/composer.json
@@ -1,5 +1,7 @@
 {
 	"require": {
-		"mnapoli/php-di": "~4.0"
+		"mnapoli/php-di": "~4.0",
+		"linkorb/jsmin-php": "1.*",
+		"natxet/CssMin": "3.*"
 	}
 }
diff --git a/public_html/.gitignore b/public_html/.gitignore
new file mode 100644
index 00000000..24320287
--- /dev/null
+++ b/public_html/.gitignore
@@ -0,0 +1 @@
+index-compiled.html
diff --git a/public_html/.htaccess b/public_html/.htaccess
index 169fbf32..550b38ba 100644
--- a/public_html/.htaccess
+++ b/public_html/.htaccess
@@ -1,3 +1,6 @@
+DirectoryIndex index-compiled.html
+DirectoryIndex index.html
+
 RewriteEngine On
 RewriteRule ^/?api/(.*) api-dispatch.php?q=$1 [L]
 
diff --git a/public_html/compile.php b/public_html/compile.php
new file mode 100644
index 00000000..eb86646a
--- /dev/null
+++ b/public_html/compile.php
@@ -0,0 +1,133 @@
+<?php
+define('DS', DIRECTORY_SEPARATOR);
+require_once __DIR__ . DS . '..' . DS . 'vendor' . DS . 'autoload.php';
+
+class Compressor
+{
+	public static function css($content)
+	{
+		return CssMin::minify($content);
+	}
+
+	public static function js($content)
+	{
+		return JSMin::minify($content);
+	}
+
+	public static function html($html)
+	{
+		$illegalTags = ['script', 'link', 'textarea', 'pre'];
+		$chunks = preg_split( '/(<(' . join('|', $illegalTags) . ')(?:\/|.*?\/\2)>)/ms', $html, -1,
+		PREG_SPLIT_DELIM_CAPTURE);
+		$buffer = '';
+		foreach ($chunks as $chunk)
+		{
+			if (in_array($chunk, $illegalTags))
+				continue;
+
+			if (preg_match('/^<(' . join('|', $illegalTags) . ')/', $chunk))
+			{
+				$buffer .= $chunk;
+				continue;
+			}
+
+			# remove new lines & tabs
+			$chunk = preg_replace( '/[\\n\\r\\t]+/', ' ', $chunk);
+			# remove extra whitespace
+			$chunk = preg_replace( '/\\s{2,}/', ' ', $chunk);
+			# remove inter-tag whitespace
+			$chunk = preg_replace( '/>\\s</', '><', $chunk);
+			# remove CSS & JS comments
+			$chunk = preg_replace( '/\\/\\*.*?\\*\\//i', '', $chunk);
+			$buffer .= $chunk;
+		}
+		return $buffer;
+	}
+}
+
+class IndexBuilder
+{
+	public static function build()
+	{
+		$html = file_get_contents(__DIR__ . DS . 'index.html');
+		self::includeTemplates($html);
+		self::minifyScripts($html);
+		self::minifyStylesheets($html);
+		return $html;
+	}
+
+	private static function injectBody(&$html, $text)
+	{
+		$html = str_replace('</body>', $text . '</body>', $html);
+	}
+
+	private static function injectHead(&$html, $text)
+	{
+		$html = str_replace('</head>', $text . '</head>', $html);
+	}
+
+	private static function minifyScripts(&$html)
+	{
+		$scriptsToMinify = [];
+
+		$html = preg_replace_callback(
+			'/<script[^>]*src="([^"]+)"[^>]*><\/script>/',
+			function($matches) use (&$scriptsToMinify)
+			{
+				$scriptPath = $matches[1];
+				if (substr($scriptPath, 0, 2) == '//' or strpos($scriptPath, 'http') !== false)
+					return $matches[0];
+				$scriptsToMinify []= __DIR__ . DS . $scriptPath;
+				return '';
+			}, $html);
+
+		$out = '<script type="text/javascript">';
+		foreach ($scriptsToMinify as $scriptPath)
+			$out .= Compressor::js(file_get_contents($scriptPath));
+		$out .= '</script>';
+		self::injectBody($html, $out);
+	}
+
+	private static function minifyStylesheets(&$html)
+	{
+		$html = preg_replace_callback(
+			'/<link[^>]*href="([^"]+)"[^>]*>/',
+			function($matches) use (&$stylesToMinify)
+			{
+				$stylePath = $matches[1];
+				if (substr($stylePath, 0, 2) == '//' or strpos($stylePath, 'http') !== false)
+					return $matches[0];
+				if (strpos($matches[0], 'css') === false)
+					return $matches[0];
+				$stylesToMinify []= __DIR__ . DS . $stylePath;
+				return '';
+			}, $html);
+
+		$out = '<style type="text/css">';
+		foreach ($stylesToMinify as $stylePath)
+			$out .= Compressor::css(file_get_contents($stylePath));
+		$out .= '</style>';
+		self::injectHead($html, $out);
+	}
+
+	private static function includeTemplates(&$html)
+	{
+		$templatesToInclude = [];
+		foreach (glob(__DIR__ . DS . 'templates' . DS . '*.tpl') as $templatePath)
+			$templatesToInclude []= $templatePath;
+
+		$out = '';
+		foreach ($templatesToInclude as $templatePath)
+		{
+			$out .= '<script type="text/template" id="' . str_replace('.tpl', '-template', basename($templatePath)) . '">';
+			$out .= Compressor::html(file_get_contents($templatePath));
+			$out .= '</script>';
+		}
+		self::injectBody($html, $out);
+	}
+}
+
+$compiledPath = __DIR__ . DS . 'index-compiled.html';
+$html = IndexBuilder::build();
+$html = Compressor::html($html);
+file_put_contents($compiledPath, $html);