Initial commit

site/OFF_plugins/embed/core/html.php

@@ -0,0 +1,157 @@
+<?php
+
+namespace Kirby\Embed;
+
+use C;
+use L;
+use Tpl;
+
+class Html {
+
+  public function __construct($core) {
+    $this->core    = $core;
+    $this->options = $this->core->options;
+
+    $this->data    = [
+      'code'     => $this->core->code(),
+      'class'    => $this->core->options['class'],
+      'type'     => $this->core->type(),
+      'provider' => $this->core->providerName(),
+      'style'    => null,
+      'more'     => null
+    ];
+  }
+
+
+  // ================================================
+  //  Outputs
+  // ================================================
+
+  public function __toString() {
+    // call preparation method for type
+    $this->prepareType();
+
+    // w3c valid code
+    $this->ensureValidCode();
+
+    // update embed iframe url
+    $this->updateData('code', function($code) {
+      return $this->core->url->update($code);
+    });
+
+    return $this->snippet('wrapper', $this->data);
+  }
+
+  public static function error($url, $msg = null) {
+    if(!$msg) $msg = 'noembed';
+    $msg  = l::get('plugin.embed.error.' . $msg);
+    $path = __DIR__ . DS . 'snippets' . DS . 'error.php';
+
+    return tpl::load($path, [
+      'url' => $url,
+      'msg' => $msg
+    ]);
+  }
+
+  public static function cheatsheet($parameters) {
+    $path = __DIR__ . DS . 'snippets' . DS . 'cheatsheet.php';
+    return tpl::load($path, [
+      'entries' => $parameters
+    ]);
+  }
+
+  // ================================================
+  //  Types
+  // ================================================
+
+  protected function prepareType() {
+    $prepareType = 'prepare' . ucfirst($this->core->type());
+    if(method_exists($this, $prepareType)) {
+      $this->{$prepareType}();
+    }
+
+    if(!$this->data['code']) {
+      $this->updateData('code', $this->error($this->core->input, 'nocode'));
+      $this->updateData('class', false);
+    }
+  }
+
+
+  // ================================================
+  //  Videos
+  // ================================================
+
+  protected function prepareVideo() {
+    if($this->data['code']) {
+      // Container ratio
+      $this->data['style'] = 'padding-top:' . str_replace(',', '.', $this->core->aspectRatio()) . '%';
+
+      // Lazy video
+      if($this->options['lazyvideo'] && $this->core->supportsLazyVideo()) {
+        $this->lazyVideo();
+      }
+    }
+  }
+
+  protected function lazyVideo() {
+    // src -> data-src
+    $this->updateData('code', function($code) {
+      $pattern = '/(<iframe.*)(src)(="[^[:space:]]*")/';
+      $replace = '$1data-src$3';
+      return preg_replace($pattern, $replace, $code);
+    });
+
+    // thumb
+    $this->data['more'] = $this->snippet('thumb', [
+      'url' => $this->core->thumb(),
+      'alt' => $this->core->title() . ($this->core->authorName() ? ' (by ' . $this->core->authorName() . ')' : '')
+    ]);
+  }
+
+  // ================================================
+  //  Links
+  // ================================================
+
+  protected function prepareLink() {
+    if(!$this->data['code']) {
+      $this->updateData('code', $this->snippet('typeLink', [
+        'url'  => $this->core->url(),
+        'text' => $this->core->title()
+      ]));
+    }
+  }
+
+
+  // ================================================
+  //  Code validity
+  // ================================================
+  protected function ensureValidCode() {
+    if(c::get('plugin.embed.w3c.enforce', false)) {
+      $this->updateData('code', function($code) {
+        $pattern = '/(frameborder="0"|allowtransparency="true")/';
+        return preg_replace($pattern, '', $code);
+      });
+    }
+  }
+
+  // ================================================
+  //  Helpers
+  // ================================================
+
+  protected function updateData($data, $value) {
+    if(is_callable($value)) {
+      $this->data[$data] = $value($this->data[$data]);
+    } else {
+      $this->data[$data] = $value;
+    }
+  }
+
+  protected function snippet($name, $data) {
+    return tpl::load(__DIR__ . DS . 'snippets' . DS . $name . '.php', $data);
+  }
+
+  public static function removeEmojis($string) {
+    return trim(preg_replace('/[\x00-\x1F\x80-\xFF]/', '',   mb_convert_encoding($string, "UTF-8")));
+  }
+
+}