class UnicodeConversion in Typogrify 8

Return the unicode conversion maps.

Hierarchy

• class \Drupal\typogrify\UnicodeConversion

1 file declares its use of UnicodeConversion

TypogrifyFilter.php in src/Plugin/Filter/TypogrifyFilter.php

File

src/UnicodeConversion.php, line 8

Namespace

Drupal\typogrify

class UnicodeConversion {

  /**
   * Provides Unicode-mapping.
   *
   * @param string $type
   *   The map type we're looking for, one of 'ligature', 'punctuation',
   *   'arrow' 'nested' or 'all'.
   *
   * @return array
   *   Array of conversions, keyed by the original string.
   */
  public static function map($type = 'all') {
    $map = [
      // See http://www.unicode.org/charts/PDF/UFB00.pdf .
      'ligature' => [
        'ffi' => 'ffi',
        'ffl' => 'ffl',
        'ff' => 'ff',
        'fi' => 'fi',
        'fl' => 'fl',
        'ij' => 'ij',
        'IJ' => 'IJ',
        'st' => 'st',
        'ss' => 'ß',
      ],
      // See http:#www.unicode.org/charts/PDF/U2000.pdf .
      'punctuation' => [
        '...' => '…',
        '..' => '‥',
        '. . .' => '…',
        '---' => '—',
        '--' => '–',
      ],
      'fraction' => [
        '1/4' => '¼',
        '1/2' => '½',
        '3/4' => '¾',
        '1/3' => '⅓',
        '2/3' => '⅔',
        '1/5' => '⅕',
        '2/5' => '⅖',
        '3/5' => '⅗',
        '4/5' => '⅘',
        '1/6' => '⅙',
        '5/6' => '⅚',
        '1/8' => '⅛',
        '3/8' => '⅜',
        '5/8' => '⅝',
        '7/8' => '⅞',
      ],
      'quotes' => [
        ',,' => '„',
        "''" => '”',
        '<<' => '«',
        '>>' => '»',
      ],
      // See http:#www.unicode.org/charts/PDF/U2190.pdf .
      'arrow' => [
        '->>' => '↠',
        '<<-' => '↞',
        '->|' => '⇥',
        '|<-' => '⇤',
        '<->' => '↔',
        '->' => '→',
        '<-' => '←',
        '<=>' => '⇔',
        '=>' => '⇒',
        '<=' => '⇐',
      ],
    ];
    if ($type == 'all') {
      return array_merge($map['ligature'], $map['arrow'], $map['punctuation'], $map['quotes'], $map['fraction']);
    }
    elseif ($type == 'nested') {
      return $map;
    }
    else {
      return $map[$type];
    }
  }

  /**
   * Perform character conversion.
   *
   * @param string $text
   *   Text to be parsed.
   * @param array $characters_to_convert
   *   Array of ASCII characters to convert.
   *
   * @return string
   *   The result of the conversion.
   */
  public static function convertCharacters($text, array $characters_to_convert) {
    if ($characters_to_convert == NULL || count($characters_to_convert) < 1) {

      // Do nothing.
      return $text;
    }

    // Get ascii to unicode mappings.
    $unicode_map = self::map();
    foreach ($characters_to_convert as $ascii_string) {
      $unicode_strings[] = $unicode_map[$ascii_string];
    }
    $tokens = SmartyPants::tokenizeHtml($text);
    $result = '';

    // Keep track of when we're inside <pre> or <code> tags.
    $in_pre = 0;
    foreach ($tokens as $cur_token) {
      if ($cur_token[0] == "tag") {

        // Don't mess with text inside tags, <pre> blocks, or <code> blocks.
        $result .= $cur_token[1];

        // Get the tags to skip regex from SmartyPants.
        if (preg_match(SmartyPants::SMARTYPANTS_TAGS_TO_SKIP, $cur_token[1], $matches)) {
          $in_pre = isset($matches[1]) && $matches[1] == '/' ? 0 : 1;
        }
      }
      else {
        $t = $cur_token[1];
        if ($in_pre == 0) {
          $t = SmartyPants::processEscapes($t);
          $t = str_replace($characters_to_convert, $unicode_strings, $t);
        }
        $result .= $t;
      }
    }
    return $result;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
UnicodeConversion::convertCharacters	public static	function	Perform character conversion.
UnicodeConversion::map	public static	function	Provides Unicode-mapping.