first commit

This commit is contained in:
aschwarz
2023-02-27 11:53:33 +01:00
commit 3aa76070e9
2691 changed files with 508437 additions and 0 deletions

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<?php
/**
* This file is part of FPDI
*
* @package FPDI
* @copyright Copyright (c) 2015 Setasign - Jan Slabon (http://www.setasign.com)
* @license http://opensource.org/licenses/mit-license The MIT License
* @version 1.6.1
*/
/**
* Class FilterASCII85
*/
class FilterASCII85
{
/**
* Decode ASCII85 encoded string
*
* @param string $in
* @return string
* @throws Exception
*/
public function decode($in)
{
$ord = array(
'~' => ord('~'),
'z' => ord('z'),
'u' => ord('u'),
'!' => ord('!')
);
$out = '';
$state = 0;
$chn = null;
$l = strlen($in);
for ($k = 0; $k < $l; ++$k) {
$ch = ord($in[$k]) & 0xff;
if ($ch == $ord['~']) {
break;
}
if (preg_match('/^\s$/',chr($ch))) {
continue;
}
if ($ch == $ord['z'] && $state == 0) {
$out .= chr(0) . chr(0) . chr(0) . chr(0);
continue;
}
if ($ch < $ord['!'] || $ch > $ord['u']) {
throw new Exception('Illegal character in ASCII85Decode.');
}
$chn[$state++] = $ch - $ord['!'];
if ($state == 5) {
$state = 0;
$r = 0;
for ($j = 0; $j < 5; ++$j) {
$r = (int)($r * 85 + $chn[$j]);
}
$out .= chr($r >> 24);
$out .= chr($r >> 16);
$out .= chr($r >> 8);
$out .= chr($r);
}
}
$r = 0;
if ($state == 1) {
throw new Exception('Illegal length in ASCII85Decode.');
}
if ($state == 2) {
$r = $chn[0] * 85 * 85 * 85 * 85 + ($chn[1]+1) * 85 * 85 * 85;
$out .= chr($r >> 24);
} else if ($state == 3) {
$r = $chn[0] * 85 * 85 * 85 * 85 + $chn[1] * 85 * 85 * 85 + ($chn[2]+1) * 85 * 85;
$out .= chr($r >> 24);
$out .= chr($r >> 16);
} else if ($state == 4) {
$r = $chn[0] * 85 * 85 * 85 * 85 + $chn[1] * 85 * 85 * 85 + $chn[2] * 85 * 85 + ($chn[3]+1) * 85 ;
$out .= chr($r >> 24);
$out .= chr($r >> 16);
$out .= chr($r >> 8);
}
return $out;
}
/**
* NOT IMPLEMENTED
*
* @param string $in
* @return string
* @throws LogicException
*/
public function encode($in)
{
throw new LogicException("ASCII85 encoding not implemented.");
}
}

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<?php
/**
* This file is part of FPDI
*
* @package FPDI
* @copyright Copyright (c) 2015 Setasign - Jan Slabon (http://www.setasign.com)
* @license http://opensource.org/licenses/mit-license The MIT License
* @version 1.6.1
*/
/**
* Class FilterASCIIHexDecode
*/
class FilterASCIIHexDecode
{
/**
* Converts an ASCII hexadecimal encoded string into it's binary representation.
*
* @param string $data The input string
* @return string
*/
public function decode($data)
{
$data = preg_replace('/[^0-9A-Fa-f]/', '', rtrim($data, '>'));
if ((strlen($data) % 2) == 1) {
$data .= '0';
}
return pack('H*', $data);
}
/**
* Converts a string into ASCII hexadecimal representation.
*
* @param string $data The input string
* @param boolean $leaveEOD
* @return string
*/
public function encode($data, $leaveEOD = false)
{
return current(unpack('H*', $data)) . ($leaveEOD ? '' : '>');
}
}

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<?php
/**
* This file is part of FPDI
*
* @package FPDI
* @copyright Copyright (c) 2015 Setasign - Jan Slabon (http://www.setasign.com)
* @license http://opensource.org/licenses/mit-license The MIT License
* @version 1.6.1
*/
/**
* Class FilterLZW
*/
class FilterLZW
{
protected $_sTable = array();
protected $_data = null;
protected $_dataLength = 0;
protected $_tIdx;
protected $_bitsToGet = 9;
protected $_bytePointer;
protected $_bitPointer;
protected $_nextData = 0;
protected $_nextBits = 0;
protected $_andTable = array(511, 1023, 2047, 4095);
/**
* Decodes LZW compressed data.
*
* @param string $data The compressed data.
* @throws Exception
* @return string
*/
public function decode($data)
{
if ($data[0] == 0x00 && $data[1] == 0x01) {
throw new Exception('LZW flavour not supported.');
}
$this->_initsTable();
$this->_data = $data;
$this->_dataLength = strlen($data);
// Initialize pointers
$this->_bytePointer = 0;
$this->_bitPointer = 0;
$this->_nextData = 0;
$this->_nextBits = 0;
$oldCode = 0;
$unCompData = '';
while (($code = $this->_getNextCode()) != 257) {
if ($code == 256) {
$this->_initsTable();
$code = $this->_getNextCode();
if ($code == 257) {
break;
}
if (!isset($this->_sTable[$code])) {
throw new Exception('Error while decompression LZW compressed data.');
}
$unCompData .= $this->_sTable[$code];
$oldCode = $code;
} else {
if ($code < $this->_tIdx) {
$string = $this->_sTable[$code];
$unCompData .= $string;
$this->_addStringToTable($this->_sTable[$oldCode], $string[0]);
$oldCode = $code;
} else {
$string = $this->_sTable[$oldCode];
$string = $string . $string[0];
$unCompData .= $string;
$this->_addStringToTable($string);
$oldCode = $code;
}
}
}
return $unCompData;
}
/**
* Initialize the string table.
*/
protected function _initsTable()
{
$this->_sTable = array();
for ($i = 0; $i < 256; $i++)
$this->_sTable[$i] = chr($i);
$this->_tIdx = 258;
$this->_bitsToGet = 9;
}
/**
* Add a new string to the string table.
*/
protected function _addStringToTable($oldString, $newString = '')
{
$string = $oldString . $newString;
// Add this new String to the table
$this->_sTable[$this->_tIdx++] = $string;
if ($this->_tIdx == 511) {
$this->_bitsToGet = 10;
} else if ($this->_tIdx == 1023) {
$this->_bitsToGet = 11;
} else if ($this->_tIdx == 2047) {
$this->_bitsToGet = 12;
}
}
/**
* Returns the next 9, 10, 11 or 12 bits
*
* @return int
*/
protected function _getNextCode()
{
if ($this->_bytePointer == $this->_dataLength) {
return 257;
}
$this->_nextData = ($this->_nextData << 8) | (ord($this->_data[$this->_bytePointer++]) & 0xff);
$this->_nextBits += 8;
if ($this->_nextBits < $this->_bitsToGet) {
$this->_nextData = ($this->_nextData << 8) | (ord($this->_data[$this->_bytePointer++]) & 0xff);
$this->_nextBits += 8;
}
$code = ($this->_nextData >> ($this->_nextBits - $this->_bitsToGet)) & $this->_andTable[$this->_bitsToGet-9];
$this->_nextBits -= $this->_bitsToGet;
return $code;
}
/**
* NOT IMPLEMENTED
*
* @param string $in
* @return string
* @throws LogicException
*/
public function encode($in)
{
throw new LogicException("LZW encoding not implemented.");
}
}