Name.php

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<?php
#require_once 'Zend/Pdf/Element.php';


class Zend_Pdf_Element_Name extends Zend_Pdf_Element
{
    public $value;


    public function __construct($val)
    {
        settype($val, 'string');
        if (strpos($val,"\x00") !== false) {
            #require_once 'Zend/Pdf/Exception.php';
            throw new Zend_Pdf_Exception('Null character is not allowed in PDF Names');
        }
        $this->value   = (string)$val;
    }


    public function getType()
    {
        return Zend_Pdf_Element::TYPE_NAME;
    }


    public static function escape($inStr)
    {
        $outStr = '';

        for ($count = 0; $count < strlen($inStr); $count++) {
            $nextCode = ord($inStr[$count]);

            switch ($inStr[$count]) {
                case '(':
                // fall through to next case
                case ')':
                // fall through to next case
                case '<':
                // fall through to next case
                case '>':
                // fall through to next case
                case '[':
                // fall through to next case
                case ']':
                // fall through to next case
                case '{':
                // fall through to next case
                case '}':
                // fall through to next case
                case '/':
                // fall through to next case
                case '%':
                // fall through to next case
                case '\\':
                // fall through to next case
                case '#':
                    $outStr .= sprintf('#%02X', $nextCode);
                    break;

                default:
                    if ($nextCode >= 33 && $nextCode <= 126 ) {
                        // Visible ASCII symbol
                        $outStr .= $inStr[$count];
                    } else {
                        $outStr .= sprintf('#%02X', $nextCode);
                    }
            }

        }

        return $outStr;
    }


    public static function unescape($inStr)
    {
        $outStr = '';

        for ($count = 0; $count < strlen($inStr); $count++) {
            if ($inStr[$count] != '#' )  {
                $outStr .= $inStr[$count];
            } else {
                // Escape sequence
                $outStr .= chr(base_convert(substr($inStr, $count+1, 2), 16, 10 ));
                $count +=2;
            }
        }
        return $outStr;
    }


    public function toString($factory = null)
    {
        return '/' . self::escape((string)$this->value);
    }
}