Jingga/Resources
1
0
Fork 0
mirror of https://github.com/Karaka-Management/Resources.git synced 2026-01-11 05:18:40 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

add more global namespacing

Browse Source
This commit is contained in:
Dennis Eichhorn 2023-08-02 08:54:52 +00:00
parent 03a9cf0aef
commit 368e8d687f
1 changed files with 87 additions and 87 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

174
tcpdf/tcpdf_parser.php
View File

@ -63,13 +63,13 @@ class TCPDF_PARSER {
* XREF data. * XREF data.
* @protected * @protected
*/ */
protected $xref = array(); protected $xref = [];
/** /**
* Array of PDF objects. * Array of PDF objects.
* @protected * @protected
*/ */
protected $objects = array(); protected $objects = [];
/** /**
* Class object for decoding filters. * Class object for decoding filters.
@ -99,24 +99,24 @@ class TCPDF_PARSER {
* @public * @public
* @since 1.0.000 (2011-05-24) * @since 1.0.000 (2011-05-24)
*/ */
public function __construct($data, $cfg=array()) { public function __construct($data, $cfg=[]) {
if (empty($data)) { if (empty($data)) {
$this->Error('Empty PDF data.'); $this->Error('Empty PDF data.');
} }
// find the pdf header starting position // find the pdf header starting position
if (($trimpos = strpos($data, '%PDF-')) === FALSE) { if (($trimpos = \strpos($data, '%PDF-')) === FALSE) {
$this->Error('Invalid PDF data: missing %PDF header.'); $this->Error('Invalid PDF data: missing %PDF header.');
} }
// get PDF content string // get PDF content string
$this->pdfdata = substr($data, $trimpos); $this->pdfdata = \substr($data, $trimpos);
// get length // get length
$pdflen = strlen($this->pdfdata); $pdflen = \strlen($this->pdfdata);
// set configuration parameters // set configuration parameters
$this->setConfig($cfg); $this->setConfig($cfg);
// get xref and trailer data // get xref and trailer data
$this->xref = $this->getXrefData(); $this->xref = $this->getXrefData();
// parse all document objects // parse all document objects
$this->objects = array(); $this->objects = [];
foreach ($this->xref['xref'] as $obj => $offset) { foreach ($this->xref['xref'] as $obj => $offset) {
if (!isset($this->objects[$obj]) AND ($offset > 0)) { if (!isset($this->objects[$obj]) AND ($offset > 0)) {
// decode objects with positive offset // decode objects with positive offset
@ -166,7 +166,7 @@ class TCPDF_PARSER {
* @protected * @protected
* @since 1.0.000 (2011-05-24) * @since 1.0.000 (2011-05-24)
*/ */
protected function getXrefData($offset=0, $xref=array()) { protected function getXrefData($offset=0, $xref=[]) {
if ($offset == 0) { if ($offset == 0) {
// find last startxref // find last startxref
if (preg_match_all('/[\r\n]startxref[\s]*[\r\n]+([0-9]+)[\s]*[\r\n]+%%EOF/i', $this->pdfdata, $matches, PREG_SET_ORDER, $offset) == 0) { if (preg_match_all('/[\r\n]startxref[\s]*[\r\n]+([0-9]+)[\s]*[\r\n]+%%EOF/i', $this->pdfdata, $matches, PREG_SET_ORDER, $offset) == 0) {
@ -174,20 +174,20 @@ class TCPDF_PARSER {
} }
$matches = array_pop($matches); $matches = array_pop($matches);
$startxref = $matches[1]; $startxref = $matches[1];
} elseif (strpos($this->pdfdata, 'xref', $offset) == $offset) { } elseif (\strpos($this->pdfdata, 'xref', $offset) == $offset) {
// Already pointing at the xref table // Already pointing at the xref table
$startxref = $offset; $startxref = $offset;
} elseif (preg_match('/([0-9]+[\s][0-9]+[\s]obj)/i', $this->pdfdata, $matches, PREG_OFFSET_CAPTURE, $offset)) { } elseif (\preg_match('/([0-9]+[\s][0-9]+[\s]obj)/i', $this->pdfdata, $matches, PREG_OFFSET_CAPTURE, $offset)) {
// Cross-Reference Stream object // Cross-Reference Stream object
$startxref = $offset; $startxref = $offset;
} elseif (preg_match('/[\r\n]startxref[\s]*[\r\n]+([0-9]+)[\s]*[\r\n]+%%EOF/i', $this->pdfdata, $matches, PREG_OFFSET_CAPTURE, $offset)) { } elseif (\preg_match('/[\r\n]startxref[\s]*[\r\n]+([0-9]+)[\s]*[\r\n]+%%EOF/i', $this->pdfdata, $matches, PREG_OFFSET_CAPTURE, $offset)) {
// startxref found // startxref found
$startxref = $matches[1][0]; $startxref = $matches[1][0];
} else { } else {
$this->Error('Unable to find startxref'); $this->Error('Unable to find startxref');
} }
// check xref position // check xref position
if (strpos($this->pdfdata, 'xref', $startxref) == $startxref) { if (\strpos($this->pdfdata, 'xref', $startxref) == $startxref) {
// Cross-Reference // Cross-Reference
$xref = $this->decodeXref($startxref, $xref); $xref = $this->decodeXref($startxref, $xref);
} else { } else {
@ -208,63 +208,63 @@ class TCPDF_PARSER {
* @protected * @protected
* @since 1.0.000 (2011-06-20) * @since 1.0.000 (2011-06-20)
*/ */
protected function decodeXref($startxref, $xref=array()) { protected function decodeXref($startxref, $xref=[]) {
$startxref += 4; // 4 is the length of the word 'xref' $startxref += 4; // 4 is the length of the word 'xref'
// skip initial white space chars: \x00 null (NUL), \x09 horizontal tab (HT), \x0A line feed (LF), \x0C form feed (FF), \x0D carriage return (CR), \x20 space (SP) // skip initial white space chars: \x00 null (NUL), \x09 horizontal tab (HT), \x0A line feed (LF), \x0C form feed (FF), \x0D carriage return (CR), \x20 space (SP)
$offset = $startxref + strspn($this->pdfdata, "\x00\x09\x0a\x0c\x0d\x20", $startxref); $offset = $startxref + strspn($this->pdfdata, "\x00\x09\x0a\x0c\x0d\x20", $startxref);
// initialize object number // initialize object number
$obj_num = 0; $obj_num = 0;
// search for cross-reference entries or subsection // search for cross-reference entries or subsection
while (preg_match('/([0-9]+)[\x20]([0-9]+)[\x20]?([nf]?)(\r\n|[\x20]?[\r\n])/', $this->pdfdata, $matches, PREG_OFFSET_CAPTURE, $offset) > 0) { while (\preg_match('/([0-9]+)[\x20]([0-9]+)[\x20]?([nf]?)(\r\n|[\x20]?[\r\n])/', $this->pdfdata, $matches, PREG_OFFSET_CAPTURE, $offset) > 0) {
if ($matches[0][1] != $offset) { if ($matches[0][1] != $offset) {
// we are on another section // we are on another section
break; break;
} }
$offset += strlen($matches[0][0]); $offset += \strlen($matches[0][0]);
if ($matches[3][0] == 'n') { if ($matches[3][0] == 'n') {
// create unique object index: [object number]_[generation number] // create unique object index: [object number]_[generation number]
$index = $obj_num.'_'.intval($matches[2][0]); $index = $obj_num.'_'.\intval($matches[2][0]);
// check if object already exist // check if object already exist
if (!isset($xref['xref'][$index])) { if (!isset($xref['xref'][$index])) {
// store object offset position // store object offset position
$xref['xref'][$index] = intval($matches[1][0]); $xref['xref'][$index] = \intval($matches[1][0]);
} }
++$obj_num; ++$obj_num;
} elseif ($matches[3][0] == 'f') { } elseif ($matches[3][0] == 'f') {
++$obj_num; ++$obj_num;
} else { } else {
// object number (index) // object number (index)
$obj_num = intval($matches[1][0]); $obj_num = \intval($matches[1][0]);
} }
} }
// get trailer data // get trailer data
if (preg_match('/trailer[\s]*<<(.*)>>/isU', $this->pdfdata, $matches, PREG_OFFSET_CAPTURE, $offset) > 0) { if (\preg_match('/trailer[\s]*<<(.*)>>/isU', $this->pdfdata, $matches, PREG_OFFSET_CAPTURE, $offset) > 0) {
$trailer_data = $matches[1][0]; $trailer_data = $matches[1][0];
if (!isset($xref['trailer']) OR empty($xref['trailer'])) { if (!isset($xref['trailer']) OR empty($xref['trailer'])) {
// get only the last updated version // get only the last updated version
$xref['trailer'] = array(); $xref['trailer'] = [];
// parse trailer_data // parse trailer_data
if (preg_match('/Size[\s]+([0-9]+)/i', $trailer_data, $matches) > 0) { if (\preg_match('/Size[\s]+([0-9]+)/i', $trailer_data, $matches) > 0) {
$xref['trailer']['size'] = intval($matches[1]); $xref['trailer']['size'] = \intval($matches[1]);
} }
if (preg_match('/Root[\s]+([0-9]+)[\s]+([0-9]+)[\s]+R/i', $trailer_data, $matches) > 0) { if (\preg_match('/Root[\s]+([0-9]+)[\s]+([0-9]+)[\s]+R/i', $trailer_data, $matches) > 0) {
$xref['trailer']['root'] = intval($matches[1]).'_'.intval($matches[2]); $xref['trailer']['root'] = \intval($matches[1]).'_'.\intval($matches[2]);
} }
if (preg_match('/Encrypt[\s]+([0-9]+)[\s]+([0-9]+)[\s]+R/i', $trailer_data, $matches) > 0) { if (\preg_match('/Encrypt[\s]+([0-9]+)[\s]+([0-9]+)[\s]+R/i', $trailer_data, $matches) > 0) {
$xref['trailer']['encrypt'] = intval($matches[1]).'_'.intval($matches[2]); $xref['trailer']['encrypt'] = \intval($matches[1]).'_'.\intval($matches[2]);
} }
if (preg_match('/Info[\s]+([0-9]+)[\s]+([0-9]+)[\s]+R/i', $trailer_data, $matches) > 0) { if (\preg_match('/Info[\s]+([0-9]+)[\s]+([0-9]+)[\s]+R/i', $trailer_data, $matches) > 0) {
$xref['trailer']['info'] = intval($matches[1]).'_'.intval($matches[2]); $xref['trailer']['info'] = \intval($matches[1]).'_'.\intval($matches[2]);
} }
if (preg_match('/ID[\s]*[\[][\s]*[<]([^>]*)[>][\s]*[<]([^>]*)[>]/i', $trailer_data, $matches) > 0) { if (\preg_match('/ID[\s]*[\[][\s]*[<]([^>]*)[>][\s]*[<]([^>]*)[>]/i', $trailer_data, $matches) > 0) {
$xref['trailer']['id'] = array(); $xref['trailer']['id'] = [];
$xref['trailer']['id'][0] = $matches[1]; $xref['trailer']['id'][0] = $matches[1];
$xref['trailer']['id'][1] = $matches[2]; $xref['trailer']['id'][1] = $matches[2];
} }
} }
if (preg_match('/Prev[\s]+([0-9]+)/i', $trailer_data, $matches) > 0) { if (\preg_match('/Prev[\s]+([0-9]+)/i', $trailer_data, $matches) > 0) {
// get previous xref // get previous xref
$xref = $this->getXrefData(intval($matches[1]), $xref); $xref = $this->getXrefData(\intval($matches[1]), $xref);
} }
} else { } else {
$this->Error('Unable to find trailer'); $this->Error('Unable to find trailer');
@ -280,50 +280,50 @@ class TCPDF_PARSER {
* @protected * @protected
* @since 1.0.003 (2013-03-16) * @since 1.0.003 (2013-03-16)
*/ */
protected function decodeXrefStream($startxref, $xref=array()) { protected function decodeXrefStream($startxref, $xref=[]) {
// try to read Cross-Reference Stream // try to read Cross-Reference Stream
$xrefobj = $this->getRawObject($startxref); $xrefobj = $this->getRawObject($startxref);
$xrefcrs = $this->getIndirectObject($xrefobj[1], $startxref, true); $xrefcrs = $this->getIndirectObject($xrefobj[1], $startxref, true);
if (!isset($xref['trailer']) OR empty($xref['trailer'])) { if (!isset($xref['trailer']) OR empty($xref['trailer'])) {
// get only the last updated version // get only the last updated version
$xref['trailer'] = array(); $xref['trailer'] = [];
$filltrailer = true; $filltrailer = true;
} else { } else {
$filltrailer = false; $filltrailer = false;
} }
if (!isset($xref['xref'])) { if (!isset($xref['xref'])) {
$xref['xref'] = array(); $xref['xref'] = [];
} }
$valid_crs = false; $valid_crs = false;
$columns = 0; $columns = 0;
$sarr = $xrefcrs[0][1]; $sarr = $xrefcrs[0][1];
if (!is_array($sarr)) { if (!is_array($sarr)) {
$sarr = array(); $sarr = [];
} }
foreach ($sarr as $k => $v) { foreach ($sarr as $k => $v) {
if (($v[0] == '/') AND ($v[1] == 'Type') AND (isset($sarr[($k +1)]) AND ($sarr[($k +1)][0] == '/') AND ($sarr[($k +1)][1] == 'XRef'))) { if (($v[0] == '/') AND ($v[1] == 'Type') AND (isset($sarr[($k +1)]) AND ($sarr[($k +1)][0] == '/') AND ($sarr[($k +1)][1] == 'XRef'))) {
$valid_crs = true; $valid_crs = true;
} elseif (($v[0] == '/') AND ($v[1] == 'Index') AND (isset($sarr[($k +1)]))) { } elseif (($v[0] == '/') AND ($v[1] == 'Index') AND (isset($sarr[($k +1)]))) {
// first object number in the subsection // first object number in the subsection
$index_first = intval($sarr[($k +1)][1][0][1]); $index_first = \intval($sarr[($k +1)][1][0][1]);
// number of entries in the subsection // number of entries in the subsection
$index_entries = intval($sarr[($k +1)][1][1][1]); $index_entries = \intval($sarr[($k +1)][1][1][1]);
} elseif (($v[0] == '/') AND ($v[1] == 'Prev') AND (isset($sarr[($k +1)]) AND ($sarr[($k +1)][0] == 'numeric'))) { } elseif (($v[0] == '/') AND ($v[1] == 'Prev') AND (isset($sarr[($k +1)]) AND ($sarr[($k +1)][0] == 'numeric'))) {
// get previous xref offset // get previous xref offset
$prevxref = intval($sarr[($k +1)][1]); $prevxref = \intval($sarr[($k +1)][1]);
} elseif (($v[0] == '/') AND ($v[1] == 'W') AND (isset($sarr[($k +1)]))) { } elseif (($v[0] == '/') AND ($v[1] == 'W') AND (isset($sarr[($k +1)]))) {
// number of bytes (in the decoded stream) of the corresponding field // number of bytes (in the decoded stream) of the corresponding field
$wb = array(); $wb = [];
$wb[0] = intval($sarr[($k +1)][1][0][1]); $wb[0] = \intval($sarr[($k +1)][1][0][1]);
$wb[1] = intval($sarr[($k +1)][1][1][1]); $wb[1] = \intval($sarr[($k +1)][1][1][1]);
$wb[2] = intval($sarr[($k +1)][1][2][1]); $wb[2] = \intval($sarr[($k +1)][1][2][1]);
} elseif (($v[0] == '/') AND ($v[1] == 'DecodeParms') AND (isset($sarr[($k +1)][1]))) { } elseif (($v[0] == '/') AND ($v[1] == 'DecodeParms') AND (isset($sarr[($k +1)][1]))) {
$decpar = $sarr[($k +1)][1]; $decpar = $sarr[($k +1)][1];
foreach ($decpar as $kdc => $vdc) { foreach ($decpar as $kdc => $vdc) {
if (($vdc[0] == '/') AND ($vdc[1] == 'Columns') AND (isset($decpar[($kdc +1)]) AND ($decpar[($kdc +1)][0] == 'numeric'))) { if (($vdc[0] == '/') AND ($vdc[1] == 'Columns') AND (isset($decpar[($kdc +1)]) AND ($decpar[($kdc +1)][0] == 'numeric'))) {
$columns = intval($decpar[($kdc +1)][1]); $columns = \intval($decpar[($kdc +1)][1]);
} elseif (($vdc[0] == '/') AND ($vdc[1] == 'Predictor') AND (isset($decpar[($kdc +1)]) AND ($decpar[($kdc +1)][0] == 'numeric'))) { } elseif (($vdc[0] == '/') AND ($vdc[1] == 'Predictor') AND (isset($decpar[($kdc +1)]) AND ($decpar[($kdc +1)][0] == 'numeric'))) {
$predictor = intval($decpar[($kdc +1)][1]); $predictor = \intval($decpar[($kdc +1)][1]);
} }
} }
} elseif ($filltrailer) { } elseif ($filltrailer) {
@ -336,7 +336,7 @@ class TCPDF_PARSER {
} elseif (($v[0] == '/') AND ($v[1] == 'Encrypt') AND (isset($sarr[($k +1)]) AND ($sarr[($k +1)][0] == 'objref'))) { } elseif (($v[0] == '/') AND ($v[1] == 'Encrypt') AND (isset($sarr[($k +1)]) AND ($sarr[($k +1)][0] == 'objref'))) {
$xref['trailer']['encrypt'] = $sarr[($k +1)][1]; $xref['trailer']['encrypt'] = $sarr[($k +1)][1];
} elseif (($v[0] == '/') AND ($v[1] == 'ID') AND (isset($sarr[($k +1)]))) { } elseif (($v[0] == '/') AND ($v[1] == 'ID') AND (isset($sarr[($k +1)]))) {
$xref['trailer']['id'] = array(); $xref['trailer']['id'] = [];
$xref['trailer']['id'][0] = $sarr[($k +1)][1][0][1]; $xref['trailer']['id'][0] = $sarr[($k +1)][1][0][1];
$xref['trailer']['id'][1] = $sarr[($k +1)][1][1][1]; $xref['trailer']['id'][1] = $sarr[($k +1)][1][1][1];
} }
@ -351,13 +351,13 @@ class TCPDF_PARSER {
// split the rows // split the rows
$sdata = array_chunk($sdata, $rowlen); $sdata = array_chunk($sdata, $rowlen);
// initialize decoded array // initialize decoded array
$ddata = array(); $ddata = [];
// initialize first row with zeros // initialize first row with zeros
$prev_row = array_fill (0, $rowlen, 0); $prev_row = array_fill (0, $rowlen, 0);
// for each row apply PNG unpredictor // for each row apply PNG unpredictor
foreach ($sdata as $k => $row) { foreach ($sdata as $k => $row) {
// initialize new row // initialize new row
$ddata[$k] = array(); $ddata[$k] = [];
// get PNG predictor value // get PNG predictor value
$predictor = (10 + $row[0]); $predictor = (10 + $row[0]);
// for each byte on the row // for each byte on the row
@ -393,10 +393,10 @@ class TCPDF_PARSER {
// initial estimate // initial estimate
$p = ($row_left + $row_up - $row_upleft); $p = ($row_left + $row_up - $row_upleft);
// distances // distances
$pa = abs($p - $row_left); $pa = \abs($p - $row_left);
$pb = abs($p - $row_up); $pb = \abs($p - $row_up);
$pc = abs($p - $row_upleft); $pc = \abs($p - $row_upleft);
$pmin = min($pa, $pb, $pc); $pmin = \min($pa, $pb, $pc);
// return minimum distance // return minimum distance
switch ($pmin) { switch ($pmin) {
case $pa: { case $pa: {
@ -423,7 +423,7 @@ class TCPDF_PARSER {
$prev_row = $ddata[$k]; $prev_row = $ddata[$k];
} // end for each row } // end for each row
// complete decoding // complete decoding
$sdata = array(); $sdata = [];
// for every row // for every row
foreach ($ddata as $k => $row) { foreach ($ddata as $k => $row) {
// initialize new row // initialize new row
@ -444,7 +444,7 @@ class TCPDF_PARSER {
} }
} }
} }
$ddata = array(); $ddata = [];
// fill xref // fill xref
if (isset($index_first)) { if (isset($index_first)) {
$obj_num = $index_first; $obj_num = $index_first;
@ -516,9 +516,9 @@ class TCPDF_PARSER {
// name object // name object
$objtype = $char; $objtype = $char;
++$offset; ++$offset;
if (preg_match('/^([^\x00\x09\x0a\x0c\x0d\x20\s\x28\x29\x3c\x3e\x5b\x5d\x7b\x7d\x2f\x25]+)/', substr($this->pdfdata, $offset, 256), $matches) == 1) { if (\preg_match('/^([^\x00\x09\x0a\x0c\x0d\x20\s\x28\x29\x3c\x3e\x5b\x5d\x7b\x7d\x2f\x25]+)/', \substr($this->pdfdata, $offset, 256), $matches) == 1) {
$objval = $matches[1]; // unescaped value $objval = $matches[1]; // unescaped value
$offset += strlen($objval); $offset += \strlen($objval);
} }
break; break;
} }
@ -552,7 +552,7 @@ class TCPDF_PARSER {
} }
++$strpos; ++$strpos;
} }
$objval = substr($this->pdfdata, $offset, ($strpos - $offset - 1)); $objval = \substr($this->pdfdata, $offset, ($strpos - $offset - 1));
$offset = $strpos; $offset = $strpos;
} }
break; break;
@ -564,7 +564,7 @@ class TCPDF_PARSER {
++$offset; ++$offset;
if ($char == '[') { if ($char == '[') {
// get array content // get array content
$objval = array(); $objval = [];
do { do {
// get element // get element
$element = $this->getRawObject($offset); $element = $this->getRawObject($offset);
@ -584,7 +584,7 @@ class TCPDF_PARSER {
$offset += 2; $offset += 2;
if ($char == '<') { if ($char == '<') {
// get array content // get array content
$objval = array(); $objval = [];
do { do {
// get element // get element
$element = $this->getRawObject($offset); $element = $this->getRawObject($offset);
@ -598,65 +598,65 @@ class TCPDF_PARSER {
// hexadecimal string object // hexadecimal string object
$objtype = $char; $objtype = $char;
++$offset; ++$offset;
if (($char == '<') AND (preg_match('/^([0-9A-Fa-f\x09\x0a\x0c\x0d\x20]+)>/iU', substr($this->pdfdata, $offset), $matches) == 1)) { if (($char == '<') AND (\preg_match('/^([0-9A-Fa-f\x09\x0a\x0c\x0d\x20]+)>/iU', \substr($this->pdfdata, $offset), $matches) == 1)) {
// remove white space characters // remove white space characters
$objval = \str_replace(["\x09", "\x0a", "\x0c", "\x0d", "\x20"], '', $matches[1]); $objval = \str_replace(["\x09", "\x0a", "\x0c", "\x0d", "\x20"], '', $matches[1]);
$offset += strlen($matches[0]); $offset += \strlen($matches[0]);
} elseif (($endpos = strpos($this->pdfdata, '>', $offset)) !== FALSE) { } elseif (($endpos = \strpos($this->pdfdata, '>', $offset)) !== FALSE) {
$offset = $endpos + 1; $offset = $endpos + 1;
} }
} }
break; break;
} }
default: { default: {
if (substr($this->pdfdata, $offset, 6) == 'endobj') { if (\substr($this->pdfdata, $offset, 6) == 'endobj') {
// indirect object // indirect object
$objtype = 'endobj'; $objtype = 'endobj';
$offset += 6; $offset += 6;
} elseif (substr($this->pdfdata, $offset, 4) == 'null') { } elseif (\substr($this->pdfdata, $offset, 4) == 'null') {
// null object // null object
$objtype = 'null'; $objtype = 'null';
$offset += 4; $offset += 4;
$objval = 'null'; $objval = 'null';
} elseif (substr($this->pdfdata, $offset, 4) == 'true') { } elseif (\substr($this->pdfdata, $offset, 4) == 'true') {
// boolean true object // boolean true object
$objtype = 'boolean'; $objtype = 'boolean';
$offset += 4; $offset += 4;
$objval = 'true'; $objval = 'true';
} elseif (substr($this->pdfdata, $offset, 5) == 'false') { } elseif (\substr($this->pdfdata, $offset, 5) == 'false') {
// boolean false object // boolean false object
$objtype = 'boolean'; $objtype = 'boolean';
$offset += 5; $offset += 5;
$objval = 'false'; $objval = 'false';
} elseif (substr($this->pdfdata, $offset, 6) == 'stream') { } elseif (\substr($this->pdfdata, $offset, 6) == 'stream') {
// start stream object // start stream object
$objtype = 'stream'; $objtype = 'stream';
$offset += 6; $offset += 6;
if (preg_match('/^([\r]?[\n])/isU', substr($this->pdfdata, $offset), $matches) == 1) { if (\preg_match('/^([\r]?[\n])/isU', \substr($this->pdfdata, $offset), $matches) == 1) {
$offset += strlen($matches[0]); $offset += \strlen($matches[0]);
if (preg_match('/(endstream)[\x09\x0a\x0c\x0d\x20]/isU', substr($this->pdfdata, $offset), $matches, PREG_OFFSET_CAPTURE) == 1) { if (\preg_match('/(endstream)[\x09\x0a\x0c\x0d\x20]/isU', \substr($this->pdfdata, $offset), $matches, PREG_OFFSET_CAPTURE) == 1) {
$objval = substr($this->pdfdata, $offset, $matches[0][1]); $objval = \substr($this->pdfdata, $offset, $matches[0][1]);
$offset += $matches[1][1]; $offset += $matches[1][1];
} }
} }
} elseif (substr($this->pdfdata, $offset, 9) == 'endstream') { } elseif (\substr($this->pdfdata, $offset, 9) == 'endstream') {
// end stream object // end stream object
$objtype = 'endstream'; $objtype = 'endstream';
$offset += 9; $offset += 9;
} elseif (preg_match('/^([0-9]+)[\s]+([0-9]+)[\s]+R/iU', substr($this->pdfdata, $offset, 33), $matches) == 1) { } elseif (\preg_match('/^([0-9]+)[\s]+([0-9]+)[\s]+R/iU', \substr($this->pdfdata, $offset, 33), $matches) == 1) {
// indirect object reference // indirect object reference
$objtype = 'objref'; $objtype = 'objref';
$offset += strlen($matches[0]); $offset += \strlen($matches[0]);
$objval = intval($matches[1]).'_'.intval($matches[2]); $objval = \intval($matches[1]).'_'.\intval($matches[2]);
} elseif (preg_match('/^([0-9]+)[\s]+([0-9]+)[\s]+obj/iU', substr($this->pdfdata, $offset, 33), $matches) == 1) { } elseif (\preg_match('/^([0-9]+)[\s]+([0-9]+)[\s]+obj/iU', \substr($this->pdfdata, $offset, 33), $matches) == 1) {
// object start // object start
$objtype = 'obj'; $objtype = 'obj';
$objval = intval($matches[1]).'_'.intval($matches[2]); $objval = \intval($matches[1]).'_'.\intval($matches[2]);
$offset += strlen ($matches[0]); $offset += strlen ($matches[0]);
} elseif (($numlen = strspn($this->pdfdata, '+-.0123456789', $offset)) > 0) { } elseif (($numlen = strspn($this->pdfdata, '+-.0123456789', $offset)) > 0) {
// numeric object // numeric object
$objtype = 'numeric'; $objtype = 'numeric';
$objval = substr($this->pdfdata, $offset, $numlen); $objval = \substr($this->pdfdata, $offset, $numlen);
$offset += $numlen; $offset += $numlen;
} }
break; break;
@ -683,14 +683,14 @@ class TCPDF_PARSER {
$objref = $obj[0].' '.$obj[1].' obj'; $objref = $obj[0].' '.$obj[1].' obj';
// ignore leading zeros // ignore leading zeros
$offset += strspn($this->pdfdata, '0', $offset); $offset += strspn($this->pdfdata, '0', $offset);
if (strpos($this->pdfdata, $objref, $offset) != $offset) { if (\strpos($this->pdfdata, $objref, $offset) != $offset) {
// an indirect reference to an undefined object shall be considered a reference to the null object // an indirect reference to an undefined object shall be considered a reference to the null object
return array('null', 'null', $offset); return array('null', 'null', $offset);
} }
// starting position of object content // starting position of object content
$offset += strlen($objref); $offset += \strlen($objref);
// get array of object content // get array of object content
$objdata = array(); $objdata = [];
$i = 0; // object main index $i = 0; // object main index
do { do {
$oldoffset = $offset; $oldoffset = $offset;
@ -742,18 +742,18 @@ class TCPDF_PARSER {
*/ */
protected function decodeStream($sdic, $stream) { protected function decodeStream($sdic, $stream) {
// get stream length and filters // get stream length and filters
$slength = strlen($stream); $slength = \strlen($stream);
if ($slength <= 0) { if ($slength <= 0) {
return array('', array()); return array('', []);
} }
$filters = array(); $filters = [];
foreach ($sdic as $k => $v) { foreach ($sdic as $k => $v) {
if ($v[0] == '/') { if ($v[0] == '/') {
if (($v[1] == 'Length') AND (isset($sdic[($k + 1)])) AND ($sdic[($k + 1)][0] == 'numeric')) { if (($v[1] == 'Length') AND (isset($sdic[($k + 1)])) AND ($sdic[($k + 1)][0] == 'numeric')) {
// get declared stream length // get declared stream length
$declength = intval($sdic[($k + 1)][1]); $declength = \intval($sdic[($k + 1)][1]);
if ($declength < $slength) { if ($declength < $slength) {
$stream = substr($stream, 0, $declength); $stream = \substr($stream, 0, $declength);
$slength = $declength; $slength = $declength;
} }
} elseif (($v[1] == 'Filter') AND (isset($sdic[($k + 1)]))) { } elseif (($v[1] == 'Filter') AND (isset($sdic[($k + 1)]))) {
@ -774,7 +774,7 @@ class TCPDF_PARSER {
} }
} }
// decode the stream // decode the stream
$remaining_filters = array(); $remaining_filters = [];
foreach ($filters as $filter) { foreach ($filters as $filter) {
if (in_array($filter, TCPDF_FILTERS::getAvailableFilters())) { if (in_array($filter, TCPDF_FILTERS::getAvailableFilters())) {
try { try {