XHTMLCompiler/DOMFilter/Quoter.php

   1 <?php
   2
   3 /**
   4  * Converts <q> tags into quotation marks.
   5  */
   6 class XHTMLCompiler_DOMFilter_Quoter extends XHTMLCompiler_DOMFilter
   7 {
   8
   9     protected $name = 'Quoter';
  10
  11     protected $leftQuote = "\xE2\x80\x9C";
  12     protected $rightQuote = "\xE2\x80\x9D";
  13
  14     protected $leftNestedQuote = "\xE2\x80\x98";
  15     protected $rightNestedQuote = "\xE2\x80\x99";
  16
  17     public function __construct(
  18         $left = null, $right = null,
  19         $left_nest = null, $right_nest = null,
  20         $name = false
  21     ) {
  22         parent::__construct($name);
  23         if ($left)          $this->leftQuote = $left;
  24         if ($right)         $this->rightQuote = $right;
  25         if ($left_nest)     $this->leftNestedQuote = $left_nest;
  26         if ($right_nest)    $this->rightNestedQuote = $right_nest;
  27     }
  28
  29     public function process(DOMDocument $dom, $page, $manager) {
  30
  31         // first handle single-quotes
  32         $nodes = $this->query("//html:q//html:q");
  33         foreach ($nodes as $node) {
  34             $this->quotify($dom, $node, $this->leftNestedQuote, $this->rightNestedQuote);
  35         }
  36
  37         // now handle double-quotes
  38         $nodes = $this->query("//html:q");
  39         foreach ($nodes as $node) {
  40             $this->quotify($dom, $node, $this->leftQuote, $this->rightQuote);
  41         }
  42
  43     }
  44
  45     /**
  46      * Takes a node and unpacks its contents, surrounding it with
  47      * text instead.
  48      * @param $node Node to be unpacked
  49      * @param $left New text wrapper on left
  50      * @param $right New text wrapper on right
  51      */
  52     protected function quotify($dom, $node, $left, $right) {
  53         $parent = $node->parentNode;
  54         $parent->insertBefore($dom->createTextNode($left), $node);
  55         foreach ($node->childNodes as $child) {
  56             $parent->insertBefore($child->cloneNode(true), $node);
  57         }
  58         $parent->insertBefore($dom->createTextNode($right), $node);
  59         $parent->removeChild($node);
  60     }
  61
  62 }