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import v1.0.0-RC4 | 2009-05-20

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2019-07-17 22:08:50 +02:00
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libs/Zend/Pdf/Element/String.php Normal file
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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Pdf
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
/** Zend_Pdf_Element */
require_once 'Zend/Pdf/Element.php';
/**
* PDF file 'string' element implementation
*
* @category Zend
* @package Zend_Pdf
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Pdf_Element_String extends Zend_Pdf_Element
{
/**
* Object value
*
* @var string
*/
public $value;
/**
* Object constructor
*
* @param string $val
*/
public function __construct($val)
{
$this->value = (string)$val;
}
/**
* Return type of the element.
*
* @return integer
*/
public function getType()
{
return Zend_Pdf_Element::TYPE_STRING;
}
/**
* Return object as string
*
* @param Zend_Pdf_Factory $factory
* @return string
*/
public function toString($factory = null)
{
return '(' . self::escape((string)$this->value) . ')';
}
/**
* Escape string according to the PDF rules
*
* @param string $inStr
* @return string
*/
public static function escape($inStr)
{
$outStr = '';
$lastNL = 0;
for ($count = 0; $count < strlen($inStr); $count++) {
if (strlen($outStr) - $lastNL > 128) {
$outStr .= "\\\n";
$lastNL = strlen($outStr);
}
$nextCode = ord($inStr[$count]);
switch ($nextCode) {
// "\n" - line feed (LF)
case 10:
$outStr .= '\\n';
break;
// "\r" - carriage return (CR)
case 13:
$outStr .= '\\r';
break;
// "\t" - horizontal tab (HT)
case 9:
$outStr .= '\\t';
break;
// "\b" - backspace (BS)
case 8:
$outStr .= '\\b';
break;
// "\f" - form feed (FF)
case 12:
$outStr .= '\\f';
break;
// '(' - left paranthesis
case 40:
$outStr .= '\\(';
break;
// ')' - right paranthesis
case 41:
$outStr .= '\\)';
break;
// '\' - backslash
case 92:
$outStr .= '\\\\';
break;
default:
// Don't use non-ASCII characters escaping
// if ($nextCode >= 32 && $nextCode <= 126 ) {
// // Visible ASCII symbol
// $outStr .= $inStr[$count];
// } else {
// $outStr .= sprintf('\\%03o', $nextCode);
// }
$outStr .= $inStr[$count];
break;
}
}
return $outStr;
}
/**
* Unescape string according to the PDF rules
*
* @param string $inStr
* @return string
*/
public static function unescape($inStr)
{
$outStr = '';
for ($count = 0; $count < strlen($inStr); $count++) {
if ($inStr[$count] != '\\' || $count == strlen($inStr)-1) {
$outStr .= $inStr[$count];
} else { // Escape sequence
switch ($inStr{++$count}) {
// '\\n' - line feed (LF)
case 'n':
$outStr .= "\n";
break;
// '\\r' - carriage return (CR)
case 'r':
$outStr .= "\r";
break;
// '\\t' - horizontal tab (HT)
case 't':
$outStr .= "\t";
break;
// '\\b' - backspace (BS)
case 'b':
$outStr .= "\x08";
break;
// '\\f' - form feed (FF)
case 'f':
$outStr .= "\x0C";
break;
// '\\(' - left paranthesis
case '(':
$outStr .= '(';
break;
// '\\)' - right paranthesis
case ')':
$outStr .= ')';
break;
// '\\\\' - backslash
case '\\':
$outStr .= '\\';
break;
// "\\\n" or "\\\n\r"
case "\n":
// skip new line symbol
if ($inStr[$count+1] == "\r") {
$count++;
}
break;
default:
if (ord($inStr[$count]) >= ord('0') &&
ord($inStr[$count]) <= ord('9')) {
// Character in octal representation
// '\\xxx'
$nextCode = '0' . $inStr[$count];
if (ord($inStr[$count+1]) >= ord('0') &&
ord($inStr[$count+1]) <= ord('9')) {
$nextCode .= $inStr{++$count};
if (ord($inStr[$count+1]) >= ord('0') &&
ord($inStr[$count+1]) <= ord('9')) {
$nextCode .= $inStr{++$count};
}
}
$outStr .= chr($nextCode);
} else {
$outStr .= $inStr[$count];
}
break;
}
}
}
return $outStr;
}
}