M11 functions

functions.php

<?php
/*
Plugin Name: M11 Theme Features
Plugin URI: https://speedword.press
Description: Das Plugin muss sich im Ordner wp-content/mu-plugins/ befinden. Ebenfalls muss in der wp-config autoupdaten aktiviert sein.
Author: Daniel Bieli
Author URI: https://speedword.press
License: GPL2
*/

/* =======================================================================
    01 - BASE64
======================================================================== */

class base64_encode_images{ function parse($content = ''){ return preg_replace_callback( '|<img(.*)src=["\'](.*?)["\'](.*)/>|i', create_function( '$matches', 'return "<img$matches[1]src=\'".(base64_encode_images::fetchurl($matches[2]))."\'$matches[3]/>";' ), $content ); } public function fetchurl($url = null, $ttl = 86400){ if($url){ $option_name = 'base64_encode_images_'.md5($url); $data = get_option($option_name); if(isset($data['cached_at']) && (time() - $data['cached_at'] <= $ttl)){}else{ $ch = curl_init(); $options = array( CURLOPT_URL => $url, CURLOPT_RETURNTRANSFER => true, CURLOPT_CONNECTTIMEOUT => 10, CURLOPT_TIMEOUT => 10 ); curl_setopt_array($ch, $options); $data['chunk'] = @base64_encode(curl_exec($ch)); $http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE); $data['mime'] = curl_getinfo($ch, CURLINFO_CONTENT_TYPE); curl_close($ch); if($http_code === 200){ $data['cached_at'] = time(); update_option($option_name, $data); } } } return 'data:'.$data['mime'].';base64,'.$data['chunk']; } }
 
add_filter('the_content', array('base64_encode_images','parse'));
add_filter('post_thumbnail_html', array('base64_encode_images','parse'));

/* =======================================================================
    02 - SITEMAP
======================================================================== */

function ah_create_sitemap() {
  $sitemap_posts = get_posts(array(
    'numberposts' => -1,
    'orderby' => 'modified',
    'post_type'  => array('post','page'), // Deine Custom Post Types hier einfügen (z.B. Portfolio)
    'order'    => 'DESC'
  ));

  $sitemap = '<?xml version="1.0" encoding="UTF-8"?>';
  $sitemap .= '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">';

  foreach($sitemap_posts as $post) {
    setup_postdata($post);

    $postdate = explode(" ", $post->post_modified);

  	$sitemap .= '<url>'.
      '<loc>'. get_permalink($post->ID) .'</loc>'.
      '<lastmod>'. $postdate[0] .'</lastmod>'.
      '<changefreq>monthly</changefreq>'.
    '</url>';
  }
  $sitemap .= '</urlset>';

  $fp = fopen(ABSPATH . "sitemap.xml", 'w');
  fwrite($fp, $sitemap);
  fclose($fp);
}
add_action('publish_post', 'ah_create_sitemap');
add_action('publish_page', 'ah_create_sitemap');

/* =======================================================================
    04 - RELATIVE LINKS
======================================================================== */

function make_href_root_relative($input) { return preg_replace('!http(s)?://' . $_SERVER['SERVER_NAME'] . '/!', '/', $input); } function root_relative_permalinks($input) { return make_href_root_relative($input); }

add_filter( 'day_link', 'root_relative_permalinks');
add_filter( 'year_link', 'root_relative_permalinks');
add_filter( 'term_link', 'root_relative_permalinks');
add_filter( 'month_link', 'root_relative_permalinks');
add_filter( 'search_link', 'root_relative_permalinks');
add_filter( 'the_content', 'root_relative_permalinks');
add_filter( 'the_permalink', 'root_relative_permalinks');
add_filter( 'get_shortlink', 'root_relative_permalinks');
add_filter( 'post_type_link', 'root_relative_permalinks');
add_filter( 'attachment_link', 'root_relative_permalinks');
add_filter( 'get_pagenum_link', 'root_relative_permalinks');
add_filter( 'wp_get_attachment_url', 'root_relative_permalinks');
add_filter( 'post_type_archive_link', 'root_relative_permalinks');
add_filter( 'get_comments_pagenum_link', 'root_relative_permalinks');

/* =======================================================================
    05 - REMOVE ADMIN DASHBOARD WIDGETS 
======================================================================== */

function ah_remove_dashboard_widgets() {
    global $wp_meta_boxes;
 
    unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_quick_press']);
    unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_incoming_links']);
    unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_right_now']);
    unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_plugins']);
    unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_recent_drafts']);
    unset($wp_meta_boxes['dashboard']['normal']['core']['dashboard_recent_comments']);
    unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_primary']);
    unset($wp_meta_boxes['dashboard']['side']['core']['dashboard_secondary']);
 
} 
add_action('wp_dashboard_setup', 'ah_remove_dashboard_widgets' );

/* =======================================================================
    06 - REMOVE QUERY STRINGS
======================================================================== */

function evolution_remove_wp_ver_css_js( $src ) {
    if ( strpos( $src, 'ver=' ) )
        $src = remove_query_arg( 'ver', $src );
    return $src;
}
add_filter( 'style_loader_src', 'evolution_remove_wp_ver_css_js', 9999 );
add_filter( 'script_loader_src', 'evolution_remove_wp_ver_css_js', 9999 );


/* =======================================================================
    07 - Syntax Highlighten 
======================================================================== */

function add_prism() {
		if ( is_single() ) { ?>
<link rel="stylesheet" href="/wp-content/themes/M11/prism.css">
<script type="text/javascript" src="/wp-content/themes/M11/prism.js"></script>
	<?php }
     }
add_action('wp_footer', 'add_prism');

/* =======================================================================
    08 - HTML Minify
======================================================================== */

class WP_HTML_Compression {
    protected $compress_css = true;
    protected $compress_js = true;
    protected $info_comment = true;
    protected $remove_comments = true;
 
    protected $html;
    public function __construct($html) {
      if (!empty($html)) {
            $this->parseHTML($html);
        }
    }
    public function __toString() {
        return $this->html;
    }
    protected function bottomComment($raw, $compressed) {
        $raw = strlen($raw);
        $compressed = strlen($compressed);      
        $savings = ($raw-$compressed) / $raw * 100;     
        $savings = round($savings, 2);      
        return '<!-- HTML Minify | Größe reduziert um '.$savings.'% | Von '.$raw.' Bytes, auf '.$compressed.' Bytes -->';
    }
    protected function minifyHTML($html) {
        $pattern = '/<(?<script>script).*?<\/script\s*>|<(?<style>style).*?<\/style\s*>|<!(?<comment>--).*?-->|<(?<tag>[\/\w.:-]*)(?:".*?"|\'.*?\'|[^\'">]+)*>|(?<text>((<[^!\/\w.:-])?[^<]*)+)|/si';
        preg_match_all($pattern, $html, $matches, PREG_SET_ORDER);
        $overriding = false;
        $raw_tag = false;
        $html = '';
        foreach ($matches as $token) {
            $tag = (isset($token['tag'])) ? strtolower($token['tag']) : null;
            $content = $token[0];
            if (is_null($tag)) {
                if ( !empty($token['script']) ) {
                    $strip = $this->compress_js;
                }
                else if ( !empty($token['style']) ) {
                    $strip = $this->compress_css;
                }
                else if ($content == '<!--wp-html-compression no compression-->') {
                    $overriding = !$overriding;
                    continue;
                }
                else if ($this->remove_comments) {
                    if (!$overriding && $raw_tag != 'textarea') {
                        $content = preg_replace('/<!--(?!\s*(?:\[if [^\]]+]|<!|>))(?:(?!-->).)*-->/s', '', $content);
                    }
                }
            }
            else {
                if ($tag == 'pre' || $tag == 'textarea') {
                    $raw_tag = $tag;
                }
                else if ($tag == '/pre' || $tag == '/textarea') {
                    $raw_tag = false;
                }
                else {
                    if ($raw_tag || $overriding) {
                        $strip = false;
                    }
                    else {
                        $strip = true;
                        $content = preg_replace('/(\s+)(\w++(?<!\baction|\balt|\bcontent|\bsrc)="")/', '$1', $content);
                        $content = str_replace(' />', '/>', $content);
                    }
                }
            }
            if ($strip) {
                $content = $this->removeWhiteSpace($content);
            }
            $html .= $content;
        }
        return $html;
    }
    public function parseHTML($html) {
        $this->html = $this->minifyHTML($html);
        if ($this->info_comment) {
            $this->html .= "\n" . $this->bottomComment($html, $this->html);
        }
    }
    protected function removeWhiteSpace($str) {
        $str = str_replace("\t", ' ', $str);
        $str = str_replace("\n",  '', $str);
        $str = str_replace("\r",  '', $str);
        while (stristr($str, '  ')) {
            $str = str_replace('  ', ' ', $str);
        }
        return $str;
    }
}
function wp_html_compression_finish($html) {
    return new WP_HTML_Compression($html);
}
function wp_html_compression_start() {
    ob_start('wp_html_compression_finish');
}
add_action('get_header', 'wp_html_compression_start');

/* =======================================================================
    16 - SHARE BUTTONS
======================================================================== */

function tb_share_buttons() {
?>
<div class="share-container">
<div class="share-buttons">
<center><a style="background: #5DB5DE; font-weight: bold; color: #fff; padding: 5px 15px 5px 15px;" title="Bei Twitter empfehlen" href="https://twitter.com/intent/tweet?source=webclient&text=<?php echo rawurlencode(strip_tags(get_the_title())) ?> <?php echo urlencode(get_permalink($post->ID)); ?>" target="blank" rel="nofollow"><span>Twitter</span></a> 
<a style="background: #3D62B3; font-weight: bold; color: #fff; padding: 5px 15px 5px 15px;" title="Bei Facebook empfehlen" href="https://www.facebook.com/sharer/sharer.php?u=<?php echo urlencode(get_permalink($post->ID)); ?>&t=<?php echo rawurlencode(strip_tags(get_the_title())) ?>" target="blank" rel="nofollow"><span>Facebook</span></a> 
<a style="background: #D34836; font-weight: bold; color: #fff; padding: 5px 15px 5px 15px;" title="Bei Google+ empfehlen" href="https://plusone.google.com/_/+1/confirm?hl=de&url=<?php echo urlencode(get_permalink($post->ID)); ?>&title=<?php echo rawurlencode(strip_tags(get_the_title())) ?>" target="blank" rel="nofollow"><span>Google+</span></a></center>
</div>
</div>
<?php }

/* =======================================================================
    09 - SCREENSHOTS
======================================================================== */

function tb_screenshots($atts, $content = NULL) {
extract(shortcode_atts(array(
"snap" => 'http://s.wordpress.com/mshots/v1/',
"url" => 'https://project.speedword.press',
"alt" => 'screenshot',
"w" => '720', // die Breite des Screenshots
"h" => '500' // die Höhe des Screenshots
), $atts));
 
$img = '';

return $img;
}
add_shortcode("screen", "tb_screenshots");

/* =============================================================================
 10 - ALLE VIDEOS RESPONSIVE MACHEN
============================================================================= */

function noupe_wrap_oembed( $html ){
  $html = preg_replace( '/(width|height)="\d*"\s/', "", $html ); // Strip width and height #1

  return'<div class="embed-youtube">'.$html.'</div>'; // Wrap in div element and return #3 and #4

}
add_filter( 'embed_oembed_html','noupe_wrap_oembed',10,1);

/* =============================================================================
 11 - EMBED GIST
============================================================================= */

class mattonomics_gist {
	public function __construct() {
		add_action('wp', array(__CLASS__, 'add_css')); // check if we have a gist
	}
	
	public static function add_css() {
		global $post;
		if (self::has_gist($post))
			add_action('wp_head', array(__CLASS__, 'css_output')); // if we have a gist, add the css to the head
	}
	
	public static function has_gist($post = false) {
		if (! empty($post) && is_object($post) && property_exists($post, 'post_content') && preg_match('/\[gist.+\]/', $post->post_content))
			return true;
		return false;
	}
	
	public static function css_output() {
		echo "\n\n\t\t\n"
		. "\t\t\n";
	}
	
	public static function gist($a) {
		if (! preg_match('/^https:\/\/gist\.github\.com\/([0-9]+)$/', $a['src'], $m)) // $m[1] is the identifier
			return false;
		$g = wp_remote_get("http://gist.github.com/{$m[1]}.json");
		if (! is_wp_error($g))
			$code = json_decode($g['body']);
		
		return $code->div;
	}
}
add_shortcode('gist', array('mattonomics_gist', 'gist'));
new mattonomics_gist;

/* =============================================================================
 12 - POSTLIST SHORTCOLDE
============================================================================= */

function recent_posts_shortcode($atts, $content = NULL)
{
    $atts = shortcode_atts(
        [
            'orderby' => 'date',
            'posts_per_page' => '50'
        ], $atts, 'recent-posts' );
    
    $query = new WP_Query( $atts );

    $output = '<ul class="recent-posts">';

    while($query->have_posts()) : $query->the_post();

        $output .= '<li><a href="' . get_permalink() . '">' . get_the_title() . '</a> - <small>' . get_the_date() . '</small></li>';

    endwhile;

    wp_reset_query();

    return $output . '</ul>';
}
add_shortcode('recent-posts', 'recent_posts_shortcode');

/* =============================================================================
 13 - RSS FEED LIST SHORTCOLDE
============================================================================= */

function tb_categories_with_feed() { 
	$args = array(
		'orderby' => 'name',
		'feed' => 'RSS', 
		'echo' => false, 
		'title_li'     => '',
	); 
	$string .= '<ul>';
	$string .= wp_list_categories($args); 
	$string .= '</ul>'; 

	return $string; 

}

// add shortcode
add_shortcode('categories-feed', 'tb_categories_with_feed'); 

// Add filter to execute shortcodes in text widgets
add_filter('widget_text', 'do_shortcode');

/* =============================================================================
 14 - CUSTOM LOGIN
============================================================================= */

function speedwp_replace_login_logo() { ?>
    <style type="text/css">
        #login h1 a, .login h1 a {
            background-image: url(<?php echo get_stylesheet_directory_uri(); ?>/images/site-login-logo.png);
            padding-bottom: 30px;
        }</style>
<?php }
add_action( 'login_enqueue_scripts', 'speedwp_replace_login_logo' );
function speedwp_replace_login_url() {
    return home_url();
}
add_filter( 'login_headerurl', 'speedwp_replace_login_url' );
function speedwp_replace_login_url_title() {
    return 'SpeedWord.Press - Performence Webdesign';
}
add_filter( 'login_headertitle', 'speedwp_replace_login_url_title' );