Issue #991: Removed all Selectize JS code from PHP. Additional option (settings) for e107::js(). Integrates Selectize.js using e107::js(settings) and JavaScript behaviors with jQuery Once.

2025-08-16 03:24:20 +02:00 · 2015-12-02 14:23:48 +01:00
parent 84c4c8607d
commit 2cd5f1525f
8 changed files with 522 additions and 107 deletions
--- a/e107_handlers/e_parse_class.php
+++ b/e107_handlers/e_parse_class.php
@@ -1954,6 +1954,137 @@ class e_parse extends e_parser
 	}


+	/**
+	 * Converts a PHP variable into its JavaScript equivalent.
+	 * We use HTML-safe strings, with several characters escaped.
+	 *
+	 * @param mixed $var
+	 * @return string
+	 */
+	public function toJSON($var)
+	{
+		// The PHP version cannot change within a request.
+		static $php530;
+
+		if(!isset($php530))
+		{
+			$php530 = version_compare(PHP_VERSION, '5.3.0', '>=');
+		}
+
+		if($php530)
+		{
+			// Encode <, >, ', &, and " using the json_encode() options parameter.
+			return json_encode($var, JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_AMP | JSON_HEX_QUOT);
+		}
+
+		return $this->toJSONhelper($var);
+	}
+
+
+	/**
+	 * Encodes a PHP variable to HTML-safe JSON for PHP versions below 5.3.0.
+	 *
+	 * @param mixed $var
+	 * @return string
+	 */
+	public function toJSONhelper($var)
+	{
+		switch(gettype($var))
+		{
+			case 'boolean':
+				return $var ? 'true' : 'false'; // Lowercase necessary!
+
+			case 'integer':
+			case 'double':
+				return $var;
+
+			case 'resource':
+			case 'string':
+				// Always use Unicode escape sequences (\u0022) over JSON escape
+				// sequences (\") to prevent browsers interpreting these as
+				// special characters.
+				$replace_pairs = array(
+					// ", \ and U+0000 - U+001F must be escaped according to RFC 4627.
+					'\\'           => '\u005C',
+					'"'            => '\u0022',
+					"\x00"         => '\u0000',
+					"\x01"         => '\u0001',
+					"\x02"         => '\u0002',
+					"\x03"         => '\u0003',
+					"\x04"         => '\u0004',
+					"\x05"         => '\u0005',
+					"\x06"         => '\u0006',
+					"\x07"         => '\u0007',
+					"\x08"         => '\u0008',
+					"\x09"         => '\u0009',
+					"\x0a"         => '\u000A',
+					"\x0b"         => '\u000B',
+					"\x0c"         => '\u000C',
+					"\x0d"         => '\u000D',
+					"\x0e"         => '\u000E',
+					"\x0f"         => '\u000F',
+					"\x10"         => '\u0010',
+					"\x11"         => '\u0011',
+					"\x12"         => '\u0012',
+					"\x13"         => '\u0013',
+					"\x14"         => '\u0014',
+					"\x15"         => '\u0015',
+					"\x16"         => '\u0016',
+					"\x17"         => '\u0017',
+					"\x18"         => '\u0018',
+					"\x19"         => '\u0019',
+					"\x1a"         => '\u001A',
+					"\x1b"         => '\u001B',
+					"\x1c"         => '\u001C',
+					"\x1d"         => '\u001D',
+					"\x1e"         => '\u001E',
+					"\x1f"         => '\u001F',
+					// Prevent browsers from interpreting these as as special.
+					"'"            => '\u0027',
+					'<'            => '\u003C',
+					'>'            => '\u003E',
+					'&'            => '\u0026',
+					// Prevent browsers from interpreting the solidus as special and
+					// non-compliant JSON parsers from interpreting // as a comment.
+					'/'            => '\u002F',
+					// While these are allowed unescaped according to ECMA-262, section
+					// 15.12.2, they cause problems in some JSON parsers.
+					"\xe2\x80\xa8" => '\u2028', // U+2028, Line Separator.
+					"\xe2\x80\xa9" => '\u2029', // U+2029, Paragraph Separator.
+				);
+
+				return '"' . strtr($var, $replace_pairs) . '"';
+
+			case 'array':
+				// Arrays in JSON can't be associative. If the array is empty or if it
+				// has sequential whole number keys starting with 0, it's not associative
+				// so we can go ahead and convert it as an array.
+				if(empty($var) || array_keys($var) === range(0, sizeof($var) - 1))
+				{
+					$output = array();
+					foreach($var as $v)
+					{
+						$output[] = $this->toJSONhelper($v);
+					}
+					return '[ ' . implode(', ', $output) . ' ]';
+				}
+				break;
+
+			// Otherwise, fall through to convert the array as an object.
+			case 'object':
+				$output = array();
+				foreach($var as $k => $v)
+				{
+					$output[] = $this->toJSONhelper(strval($k)) . ':' . $this->toJSONhelper($v);
+				}
+				return '{' . implode(', ', $output) . '}';
+
+			default:
+				return 'null';
+		}
+	}
+
+
 	/**
 	 * Convert Text for RSS/XML use.
 	 *