class HWLDFWordAccumulator in Drupal 9

@todo document @private @subpackage DifferenceEngine

Hierarchy

• class \Drupal\Component\Diff\Engine\HWLDFWordAccumulator

2 files declare their use of HWLDFWordAccumulator

HWLDFWordAccumulatorTest.php in core/tests/Drupal/Tests/Component/Diff/Engine/HWLDFWordAccumulatorTest.php

WordLevelDiff.php in core/lib/Drupal/Component/Diff/WordLevelDiff.php

File

core/lib/Drupal/Component/Diff/Engine/HWLDFWordAccumulator.php, line 14

Namespace

Drupal\Component\Diff\Engine

class HWLDFWordAccumulator {

  /**
   * An iso-8859-x non-breaking space.
   */
  const NBSP = ' ';
  protected $lines = [];
  protected $line = '';
  protected $group = '';
  protected $tag = '';
  protected function _flushGroup($new_tag) {
    if ($this->group !== '') {
      if ($this->tag == 'mark') {
        $this->line = $this->line . '<span class="diffchange">' . $this->group . '</span>';
      }
      else {
        $this->line = $this->line . $this->group;
      }
    }
    $this->group = '';
    $this->tag = $new_tag;
  }
  protected function _flushLine($new_tag) {
    $this
      ->_flushGroup($new_tag);
    if ($this->line != '') {
      array_push($this->lines, $this->line);
    }
    else {

      // make empty lines visible by inserting an NBSP
      array_push($this->lines, $this::NBSP);
    }
    $this->line = '';
  }
  public function addWords($words, $tag = '') {
    if ($tag != $this->tag) {
      $this
        ->_flushGroup($tag);
    }
    foreach ($words as $word) {

      // new-line should only come as first char of word.
      if ($word == '') {
        continue;
      }
      if ($word[0] == "\n") {
        $this
          ->_flushLine($tag);
        $word = mb_substr($word, 1);
      }
      assert(!strstr($word, "\n"));
      $this->group .= $word;
    }
  }
  public function getLines() {
    $this
      ->_flushLine('~done');
    return $this->lines;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
HWLDFWordAccumulator::$group	protected	property
HWLDFWordAccumulator::$line	protected	property
HWLDFWordAccumulator::$lines	protected	property
HWLDFWordAccumulator::$tag	protected	property
HWLDFWordAccumulator::addWords	public	function
HWLDFWordAccumulator::getLines	public	function
HWLDFWordAccumulator::NBSP		constant	An iso-8859-x non-breaking space.
HWLDFWordAccumulator::_flushGroup	protected	function
HWLDFWordAccumulator::_flushLine	protected	function