Version 1

[yaffs-website] / web / modules / contrib / typogrify / src / UnicodeConversion.php

diff --git a/web/modules/contrib/typogrify/src/UnicodeConversion.php b/web/modules/contrib/typogrify/src/UnicodeConversion.php
new file mode 100644 (file)
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+++ b/web/modules/contrib/typogrify/src/UnicodeConversion.php
@@ -0,0 +1,140 @@
+<?php
+
+namespace Drupal\typogrify;
+
+/**
+ * Return the unicode conversion maps.
+ */
+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') {
+    $map = array(
+      // See http://www.unicode.org/charts/PDF/UFB00.pdf .
+      'ligature' => array(
+        'ffi' => '&#xfb03;',
+        'ffl' => '&#xfb04;',
+        'ff'  => '&#xfb00;',
+        'fi'  => '&#xfb01;',
+        'fl'  => '&#xfb02;',
+        'ij'  => '&#x0133;',
+        'IJ'  => '&#x0132;',
+        'st'  => '&#xfb06;',
+        'ss'  => '&szlig;',
+      ),
+      // See http:#www.unicode.org/charts/PDF/U2000.pdf .
+      'punctuation' => array(
+        '...'   => '&#x2026;',
+        '..'    => '&#x2025;',
+        '. . .' => '&#x2026;',
+        '---'   => '&mdash;',
+        '--'    => '&ndash;',
+      ),
+      'fraction' => array(
+        '1/4'   => '&frac14;',
+        '1/2'   => '&frac12;',
+        '3/4'   => '&frac34;',
+        '1/3'   => '&#8531;',
+        '2/3'   => '&#8532;',
+        '1/5'   => '&#8533;',
+        '2/5'   => '&#8534;',
+        '3/5'   => '&#8535;',
+        '4/5'   => '&#8536;',
+        '1/6'   => '&#8537;',
+        '5/6'   => '&#8538;',
+        '1/8'   => '&#8539;',
+        '3/8'   => '&#8540;',
+        '5/8'   => '&#8541;',
+        '7/8'   => '&#8542;',
+      ),
+      'quotes' => array(
+        ',,' => '&bdquo;',
+        "''" => '&rdquo;',
+        '&lt;&lt;' => '&laquo;',
+        '&gt;&gt;' => '&raquo;',
+      ),
+      // See http:#www.unicode.org/charts/PDF/U2190.pdf .
+      'arrow' => array(
+        '-&gt;&gt;' => '&#x21a0;',
+        '&lt;&lt;-' => '&#x219e;',
+        '-&gt;|'    => '&#x21e5;',
+        '|&lt;-'    => '&#x21e4;',
+        '&lt;-&gt;' => '&#x2194;',
+        '-&gt;'     => '&#x2192;',
+        '&lt;-'     => '&#x2190;',
+        '&lt;=&gt;' => '&#x21d4;',
+        '=&gt;'     => '&#x21d2;',
+        '&lt;='     => '&#x21d0;',
+      ),
+    );
+
+    if ($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, $characters_to_convert) {
+    if (($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;
+  }
+
+}