<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Mail\Header;
use Zend\Mail\Headers;
use Zend\Mime\Mime;
/**
* Utility class used for creating wrapped or MIME-encoded versions of header
* values.
*/
abstract class HeaderWrap
{
/**
* Wrap a long header line
*
* @param string $value
* @param HeaderInterface $header
* @return string
*/
public static function wrap($value, HeaderInterface $header)
{
if ($header instanceof UnstructuredInterface) {
return static::wrapUnstructuredHeader($value, $header);
} elseif ($header instanceof StructuredInterface) {
return static::wrapStructuredHeader($value, $header);
}
return $value;
}
/**
* Wrap an unstructured header line
*
* Wrap at 78 characters or before, based on whitespace.
*
* @param string $value
* @param HeaderInterface $header
* @return string
*/
protected static function wrapUnstructuredHeader($value, HeaderInterface $header)
{
$encoding = $header->getEncoding();
if ($encoding == 'ASCII') {
return wordwrap($value, 78, Headers::FOLDING);
}
return static::mimeEncodeValue($value, $encoding, 78);
}
/**
* Wrap a structured header line
*
* @param string $value
* @param StructuredInterface $header
* @return string
*/
protected static function wrapStructuredHeader($value, StructuredInterface $header)
{
$delimiter = $header->getDelimiter();
$length = strlen($value);
$lines = array();
$temp = '';
for ($i = 0; $i < $length; $i++) {
$temp .= $value[$i];
if ($value[$i] == $delimiter) {
$lines[] = $temp;
$temp = '';
}
}
return implode(Headers::FOLDING, $lines);
}
/**
* MIME-encode a value
*
* Performs quoted-printable encoding on a value, setting maximum
* line-length to 998.
*
* @param string $value
* @param string $encoding
* @param int $lineLength maximum line-length, by default 998
* @return string Returns the mime encode value without the last line ending
*/
public static function mimeEncodeValue($value, $encoding, $lineLength = 998)
{
return Mime::encodeQuotedPrintableHeader($value, $encoding, $lineLength, Headers::EOL);
}
}
# |
Change |
User |
Description |
Committed |
|
#1
|
18334 |
Liz Lam |
initial add of jambox |
|
|