protected function TruncateHTML::domNodeTruncateWords in Smart Trim 8

Truncates a DOMNode by words.

Parameters

\DOMNode $domnode: Object to be truncated.

1 call to TruncateHTML::domNodeTruncateWords()

TruncateHTML::truncateWords in src/Truncate/TruncateHTML.php

Truncates HTML text by words.

File

src/Truncate/TruncateHTML.php, line 201

Contains trim functionality.

Class

TruncateHTML

Class TruncateHTML.

Namespace

Drupal\smart_trim\Truncate

Code

protected function domNodeTruncateWords(\DOMNode $domnode) {
  foreach ($domnode->childNodes as $node) {
    if ($this->foundBreakpoint == TRUE) {
      return;
    }
    if ($node
      ->hasChildNodes()) {
      $this
        ->domNodeTruncateWords($node);
    }
    else {
      $cur_count = $this
        ->countWords($node->nodeValue);
      if ($this->wordCount + $cur_count >= $this->limit) {

        // We have found our end point.
        if ($cur_count > 1 && $this->limit - $this->wordCount < $cur_count) {

          // Note that PREG_SPLIT_OFFSET_CAPTURE and UTF-8 is interesting.
          // preg_split() works on the string as an array of bytes therefore
          // in order to use it's results we need to use non unicode aware
          // functions.
          // @see https://bugs.php.net/bug.php?id=67487
          $words = preg_split("/[\n\r\t ]+/", $node->nodeValue, $this->limit - $this->wordCount + 1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_OFFSET_CAPTURE);
          end($words);
          $last_word = prev($words);
          $node->nodeValue = substr($node->nodeValue, 0, $last_word[1] + strlen($last_word[0]));
        }
        $this
          ->removeTrailingPunctuation($node);
        $this
          ->removeProceedingNodes($node);
        $this
          ->insertEllipsis($node);
        $this->foundBreakpoint = TRUE;
        return;
      }
      else {
        $this->wordCount += $cur_count;
      }
    }
  }
}