Ticket #3372: combine.php

<?php
/*
Plugin Name: The Combiner
Plugin URI: http://dd32.id.au/wordpress-plugins/?plugin=combine-css-js
Description: Combine CSS & JS into one large monolithic file
Author: DD32
Version: 1.0
Author URI: http://dd32.id.au/
*/

add_action('admin_init', 'combine_init');
function combine_init() {
        //Handler
        add_action('admin_post_css', 'combine_css');
        add_action('admin_post_js', 'combine_js');
        
        //Styles
        //remove_action('wp_head', 'wp_print_styles', 9); //non-admin
        remove_action('admin_print_styles', 'wp_print_styles', 20);
        //add_action('wp_head', 'combine_css_link');//non-admin
        add_action('admin_print_styles', 'combine_css_link', 20);
        
        //Scripts
        //remove_action('wp_head', 'wp_print_scripts', 9); //non-admin
        remove_action('admin_print_scripts', 'wp_print_scripts', 20);
        //add_action('wp_head', 'combine_js_link'); //non-admin
        add_action('admin_print_scripts', 'combine_js_link', 20);
}

function combine_css() {
        global $wp_styles;
        if ( !is_a($wp_styles, 'WP_Styles') )
                $wp_styles = new WP_Styles();

        header('content-type: text/css; charset: UTF-8');

        $content = '';
        foreach ( (array)$wp_styles->registered as $style ) {
                if ( file_exists(ABSPATH . $style->src) ) 
                        $content .= file_get_contents(ABSPATH . $style->src);
                $content .= "\n\n";
        }
        echo $content;
}

function combine_css_link() {
        echo '<link rel="stylesheet" type="text/css" media="all" href="' . admin_url('admin-post.php?action=css' . (is_admin() ? '&admin=true' : '') ) . '" />' . "\n";
}

function combine_js() {
        global $wp_scripts;
        if ( !is_a($wp_scripts, 'WP_Scripts') )
                $wp_scripts = new WP_Scripts();

        header("content-type: text/javascript; charset: UTF-8");
        
        $content = '';
        foreach ( (array)$wp_scripts->registered as $script ) {
                if ( file_exists(ABSPATH . $script->src) )
                        $content .= file_get_contents(ABSPATH . $script->src) . "\n\n";
                if ( isset($script->extra['l10n']) ) {
                        $object_name = $script->extra['l10n'][0];
        
                        $content .= "\t$object_name = {\n";
                        $eol = '';
                        foreach ( $script->extra['l10n'][1] as $var => $val ) {
                                $content .= "$eol\t\t$var: \"" . js_escape( $val ) . '"';
                                $eol = ",\n";
                        }
                        $content .= "\n\t}\n\n";
                }
        }
        echo $content;
}

function combine_js_link() {
        echo '<script type="text/javascript" src="' . admin_url('admin-post.php?action=js' . (is_admin() ? '&admin=true' : '') ) . '"></script>' . "\n";
}
?>