From 3329f1bf3d855849ee2b3f8333be542d53b62fb8 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nicolas=20L=C5=93uillet?= Date: Mon, 19 Jan 2015 14:36:17 +0100 Subject: tcpdf via composer --- .../libraries/tcpdf/include/tcpdf_filters.php | 481 --------------------- 1 file changed, 481 deletions(-) delete mode 100644 inc/3rdparty/libraries/tcpdf/include/tcpdf_filters.php (limited to 'inc/3rdparty/libraries/tcpdf/include/tcpdf_filters.php') diff --git a/inc/3rdparty/libraries/tcpdf/include/tcpdf_filters.php b/inc/3rdparty/libraries/tcpdf/include/tcpdf_filters.php deleted file mode 100644 index 96584db5..00000000 --- a/inc/3rdparty/libraries/tcpdf/include/tcpdf_filters.php +++ /dev/null @@ -1,481 +0,0 @@ -. -// -// See LICENSE.TXT file for more information. -// ------------------------------------------------------------------- -// -// Description : This is a PHP class for decoding common PDF filters (PDF 32000-2008 - 7.4 Filters). -// -//============================================================+ - -/** - * @file - * This is a PHP class for decoding common PDF filters (PDF 32000-2008 - 7.4 Filters).
- * @package com.tecnick.tcpdf - * @author Nicola Asuni - * @version 1.0.001 - */ - -/** - * @class TCPDF_FILTERS - * This is a PHP class for decoding common PDF filters (PDF 32000-2008 - 7.4 Filters).
- * @package com.tecnick.tcpdf - * @brief This is a PHP class for decoding common PDF filters. - * @version 1.0.001 - * @author Nicola Asuni - info@tecnick.com - */ -class TCPDF_FILTERS { - - /** - * Define a list of available filter decoders. - * @private static - */ - private static $available_filters = array('ASCIIHexDecode', 'ASCII85Decode', 'LZWDecode', 'FlateDecode', 'RunLengthDecode'); - -// ----------------------------------------------------------------------------- - - /** - * Get a list of available decoding filters. - * @return (array) Array of available filter decoders. - * @since 1.0.000 (2011-05-23) - * @public static - */ - public static function getAvailableFilters() { - return self::$available_filters; - } - - /** - * Decode data using the specified filter type. - * @param $filter (string) Filter name. - * @param $data (string) Data to decode. - * @return Decoded data string. - * @since 1.0.000 (2011-05-23) - * @public static - */ - public static function decodeFilter($filter, $data) { - switch ($filter) { - case 'ASCIIHexDecode': { - return self::decodeFilterASCIIHexDecode($data); - break; - } - case 'ASCII85Decode': { - return self::decodeFilterASCII85Decode($data); - break; - } - case 'LZWDecode': { - return self::decodeFilterLZWDecode($data); - break; - } - case 'FlateDecode': { - return self::decodeFilterFlateDecode($data); - break; - } - case 'RunLengthDecode': { - return self::decodeFilterRunLengthDecode($data); - break; - } - case 'CCITTFaxDecode': { - return self::decodeFilterCCITTFaxDecode($data); - break; - } - case 'JBIG2Decode': { - return self::decodeFilterJBIG2Decode($data); - break; - } - case 'DCTDecode': { - return self::decodeFilterDCTDecode($data); - break; - } - case 'JPXDecode': { - return self::decodeFilterJPXDecode($data); - break; - } - case 'Crypt': { - return self::decodeFilterCrypt($data); - break; - } - default: { - return self::decodeFilterStandard($data); - break; - } - } - } - - // --- FILTERS (PDF 32000-2008 - 7.4 Filters) ------------------------------ - - /** - * Standard - * Default decoding filter (leaves data unchanged). - * @param $data (string) Data to decode. - * @return Decoded data string. - * @since 1.0.000 (2011-05-23) - * @public static - */ - public static function decodeFilterStandard($data) { - return $data; - } - - /** - * ASCIIHexDecode - * Decodes data encoded in an ASCII hexadecimal representation, reproducing the original binary data. - * @param $data (string) Data to decode. - * @return Decoded data string. - * @since 1.0.000 (2011-05-23) - * @public static - */ - public static function decodeFilterASCIIHexDecode($data) { - // intialize string to return - $decoded = ''; - // all white-space characters shall be ignored - $data = preg_replace('/[\s]/', '', $data); - // check for EOD character: GREATER-THAN SIGN (3Eh) - $eod = strpos($data, '>'); - if ($eod !== false) { - // remove EOD and extra data (if any) - $data = substr($data, 0, $eod); - $eod = true; - } - // get data length - $data_length = strlen($data); - if (($data_length % 2) != 0) { - // odd number of hexadecimal digits - if ($eod) { - // EOD shall behave as if a 0 (zero) followed the last digit - $data = substr($data, 0, -1).'0'.substr($data, -1); - } else { - self::Error('decodeFilterASCIIHexDecode: invalid code'); - } - } - // check for invalid characters - if (preg_match('/[^a-fA-F\d]/', $data) > 0) { - self::Error('decodeFilterASCIIHexDecode: invalid code'); - } - // get one byte of binary data for each pair of ASCII hexadecimal digits - $decoded = pack('H*', $data); - return $decoded; - } - - /** - * ASCII85Decode - * Decodes data encoded in an ASCII base-85 representation, reproducing the original binary data. - * @param $data (string) Data to decode. - * @return Decoded data string. - * @since 1.0.000 (2011-05-23) - * @public static - */ - public static function decodeFilterASCII85Decode($data) { - // intialize string to return - $decoded = ''; - // all white-space characters shall be ignored - $data = preg_replace('/[\s]/', '', $data); - // remove start sequence 2-character sequence <~ (3Ch)(7Eh) - if (strpos($data, '<~') !== false) { - // remove EOD and extra data (if any) - $data = substr($data, 2); - } - // check for EOD: 2-character sequence ~> (7Eh)(3Eh) - $eod = strpos($data, '~>'); - if ($eod !== false) { - // remove EOD and extra data (if any) - $data = substr($data, 0, $eod); - } - // data length - $data_length = strlen($data); - // check for invalid characters - if (preg_match('/[^\x21-\x75,\x74]/', $data) > 0) { - self::Error('decodeFilterASCII85Decode: invalid code'); - } - // z sequence - $zseq = chr(0).chr(0).chr(0).chr(0); - // position inside a group of 4 bytes (0-3) - $group_pos = 0; - $tuple = 0; - $pow85 = array((85*85*85*85), (85*85*85), (85*85), 85, 1); - $last_pos = ($data_length - 1); - // for each byte - for ($i = 0; $i < $data_length; ++$i) { - // get char value - $char = ord($data[$i]); - if ($char == 122) { // 'z' - if ($group_pos == 0) { - $decoded .= $zseq; - } else { - self::Error('decodeFilterASCII85Decode: invalid code'); - } - } else { - // the value represented by a group of 5 characters should never be greater than 2^32 - 1 - $tuple += (($char - 33) * $pow85[$group_pos]); - if ($group_pos == 4) { - $decoded .= chr($tuple >> 24).chr($tuple >> 16).chr($tuple >> 8).chr($tuple); - $tuple = 0; - $group_pos = 0; - } else { - ++$group_pos; - } - } - } - if ($group_pos > 1) { - $tuple += $pow85[($group_pos - 1)]; - } - // last tuple (if any) - switch ($group_pos) { - case 4: { - $decoded .= chr($tuple >> 24).chr($tuple >> 16).chr($tuple >> 8); - break; - } - case 3: { - $decoded .= chr($tuple >> 24).chr($tuple >> 16); - break; - } - case 2: { - $decoded .= chr($tuple >> 24); - break; - } - case 1: { - self::Error('decodeFilterASCII85Decode: invalid code'); - break; - } - } - return $decoded; - } - - /** - * LZWDecode - * Decompresses data encoded using the LZW (Lempel-Ziv-Welch) adaptive compression method, reproducing the original text or binary data. - * @param $data (string) Data to decode. - * @return Decoded data string. - * @since 1.0.000 (2011-05-23) - * @public static - */ - public static function decodeFilterLZWDecode($data) { - // intialize string to return - $decoded = ''; - // data length - $data_length = strlen($data); - // convert string to binary string - $bitstring = ''; - for ($i = 0; $i < $data_length; ++$i) { - $bitstring .= sprintf('%08b', ord($data{$i})); - } - // get the number of bits - $data_length = strlen($bitstring); - // initialize code length in bits - $bitlen = 9; - // initialize dictionary index - $dix = 258; - // initialize the dictionary (with the first 256 entries). - $dictionary = array(); - for ($i = 0; $i < 256; ++$i) { - $dictionary[$i] = chr($i); - } - // previous val - $prev_index = 0; - // while we encounter EOD marker (257), read code_length bits - while (($data_length > 0) AND (($index = bindec(substr($bitstring, 0, $bitlen))) != 257)) { - // remove read bits from string - $bitstring = substr($bitstring, $bitlen); - // update number of bits - $data_length -= $bitlen; - if ($index == 256) { // clear-table marker - // reset code length in bits - $bitlen = 9; - // reset dictionary index - $dix = 258; - $prev_index = 256; - // reset the dictionary (with the first 256 entries). - $dictionary = array(); - for ($i = 0; $i < 256; ++$i) { - $dictionary[$i] = chr($i); - } - } elseif ($prev_index == 256) { - // first entry - $decoded .= $dictionary[$index]; - $prev_index = $index; - } else { - // check if index exist in the dictionary - if ($index < $dix) { - // index exist on dictionary - $decoded .= $dictionary[$index]; - $dic_val = $dictionary[$prev_index].$dictionary[$index][0]; - // store current index - $prev_index = $index; - } else { - // index do not exist on dictionary - $dic_val = $dictionary[$prev_index].$dictionary[$prev_index][0]; - $decoded .= $dic_val; - } - // update dictionary - $dictionary[$dix] = $dic_val; - ++$dix; - // change bit length by case - if ($dix == 2047) { - $bitlen = 12; - } elseif ($dix == 1023) { - $bitlen = 11; - } elseif ($dix == 511) { - $bitlen = 10; - } - } - } - return $decoded; - } - - /** - * FlateDecode - * Decompresses data encoded using the zlib/deflate compression method, reproducing the original text or binary data. - * @param $data (string) Data to decode. - * @return Decoded data string. - * @since 1.0.000 (2011-05-23) - * @public static - */ - public static function decodeFilterFlateDecode($data) { - // intialize string to return - $decoded = @gzuncompress($data); - if ($decoded === false) { - self::Error('decodeFilterFlateDecode: invalid code'); - } - return $decoded; - } - - /** - * RunLengthDecode - * Decompresses data encoded using a byte-oriented run-length encoding algorithm. - * @param $data (string) Data to decode. - * @since 1.0.000 (2011-05-23) - * @public static - */ - public static function decodeFilterRunLengthDecode($data) { - // intialize string to return - $decoded = ''; - // data length - $data_length = strlen($data); - $i = 0; - while($i < $data_length) { - // get current byte value - $byte = ord($data{$i}); - if ($byte == 128) { - // a length value of 128 denote EOD - break; - } elseif ($byte < 128) { - // if the length byte is in the range 0 to 127 - // the following length + 1 (1 to 128) bytes shall be copied literally during decompression - $decoded .= substr($data, ($i + 1), ($byte + 1)); - // move to next block - $i += ($byte + 2); - } else { - // if length is in the range 129 to 255, - // the following single byte shall be copied 257 - length (2 to 128) times during decompression - $decoded .= str_repeat($data{($i + 1)}, (257 - $byte)); - // move to next block - $i += 2; - } - } - return $decoded; - } - - /** - * CCITTFaxDecode (NOT IMPLEMETED - RETURN AN EXCEPTION) - * Decompresses data encoded using the CCITT facsimile standard, reproducing the original data (typically monochrome image data at 1 bit per pixel). - * @param $data (string) Data to decode. - * @return Decoded data string. - * @since 1.0.000 (2011-05-23) - * @public static - */ - public static function decodeFilterCCITTFaxDecode($data) { - self::Error('~decodeFilterCCITTFaxDecode: this method has not been yet implemented'); - //return $data; - } - - /** - * JBIG2Decode (NOT IMPLEMETED - RETURN AN EXCEPTION) - * Decompresses data encoded using the JBIG2 standard, reproducing the original monochrome (1 bit per pixel) image data (or an approximation of that data). - * @param $data (string) Data to decode. - * @return Decoded data string. - * @since 1.0.000 (2011-05-23) - * @public static - */ - public static function decodeFilterJBIG2Decode($data) { - self::Error('~decodeFilterJBIG2Decode: this method has not been yet implemented'); - //return $data; - } - - /** - * DCTDecode (NOT IMPLEMETED - RETURN AN EXCEPTION) - * Decompresses data encoded using a DCT (discrete cosine transform) technique based on the JPEG standard, reproducing image sample data that approximates the original data. - * @param $data (string) Data to decode. - * @return Decoded data string. - * @since 1.0.000 (2011-05-23) - * @public static - */ - public static function decodeFilterDCTDecode($data) { - self::Error('~decodeFilterDCTDecode: this method has not been yet implemented'); - //return $data; - } - - /** - * JPXDecode (NOT IMPLEMETED - RETURN AN EXCEPTION) - * Decompresses data encoded using the wavelet-based JPEG2000 standard, reproducing the original image data. - * @param $data (string) Data to decode. - * @return Decoded data string. - * @since 1.0.000 (2011-05-23) - * @public static - */ - public static function decodeFilterJPXDecode($data) { - self::Error('~decodeFilterJPXDecode: this method has not been yet implemented'); - //return $data; - } - - /** - * Crypt (NOT IMPLEMETED - RETURN AN EXCEPTION) - * Decrypts data encrypted by a security handler, reproducing the data as it was before encryption. - * @param $data (string) Data to decode. - * @return Decoded data string. - * @since 1.0.000 (2011-05-23) - * @public static - */ - public static function decodeFilterCrypt($data) { - self::Error('~decodeFilterCrypt: this method has not been yet implemented'); - //return $data; - } - - // --- END FILTERS SECTION ------------------------------------------------- - - /** - * Throw an exception. - * @param $msg (string) The error message - * @since 1.0.000 (2011-05-23) - * @public static - */ - public static function Error($msg) { - throw new Exception('TCPDF_PARSER ERROR: '.$msg); - } - -} // END OF TCPDF_FILTERS CLASS - -//============================================================+ -// END OF FILE -//============================================================+ -- cgit v1.2.3