From 368e8d687f1af4f7adfd49826fd4cdbefb75dcec Mon Sep 17 00:00:00 2001 From: Dennis Eichhorn Date: Wed, 2 Aug 2023 08:54:52 +0000 Subject: [PATCH] add more global namespacing --- tcpdf/tcpdf_parser.php | 174 ++++++++++++++++++++--------------------- 1 file changed, 87 insertions(+), 87 deletions(-) diff --git a/tcpdf/tcpdf_parser.php b/tcpdf/tcpdf_parser.php index 2b70ead..8220c22 100755 --- a/tcpdf/tcpdf_parser.php +++ b/tcpdf/tcpdf_parser.php @@ -63,13 +63,13 @@ class TCPDF_PARSER { * XREF data. * @protected */ - protected $xref = array(); + protected $xref = []; /** * Array of PDF objects. * @protected */ - protected $objects = array(); + protected $objects = []; /** * Class object for decoding filters. @@ -99,24 +99,24 @@ class TCPDF_PARSER { * @public * @since 1.0.000 (2011-05-24) */ - public function __construct($data, $cfg=array()) { + public function __construct($data, $cfg=[]) { if (empty($data)) { $this->Error('Empty PDF data.'); } // find the pdf header starting position - if (($trimpos = strpos($data, '%PDF-')) === FALSE) { + if (($trimpos = \strpos($data, '%PDF-')) === FALSE) { $this->Error('Invalid PDF data: missing %PDF header.'); } // get PDF content string - $this->pdfdata = substr($data, $trimpos); + $this->pdfdata = \substr($data, $trimpos); // get length - $pdflen = strlen($this->pdfdata); + $pdflen = \strlen($this->pdfdata); // set configuration parameters $this->setConfig($cfg); // get xref and trailer data $this->xref = $this->getXrefData(); // parse all document objects - $this->objects = array(); + $this->objects = []; foreach ($this->xref['xref'] as $obj => $offset) { if (!isset($this->objects[$obj]) AND ($offset > 0)) { // decode objects with positive offset @@ -166,7 +166,7 @@ class TCPDF_PARSER { * @protected * @since 1.0.000 (2011-05-24) */ - protected function getXrefData($offset=0, $xref=array()) { + protected function getXrefData($offset=0, $xref=[]) { if ($offset == 0) { // 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) { @@ -174,20 +174,20 @@ class TCPDF_PARSER { } $matches = array_pop($matches); $startxref = $matches[1]; - } elseif (strpos($this->pdfdata, 'xref', $offset) == $offset) { + } elseif (\strpos($this->pdfdata, 'xref', $offset) == $offset) { // Already pointing at the xref table $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 $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 = $matches[1][0]; } else { $this->Error('Unable to find startxref'); } // check xref position - if (strpos($this->pdfdata, 'xref', $startxref) == $startxref) { + if (\strpos($this->pdfdata, 'xref', $startxref) == $startxref) { // Cross-Reference $xref = $this->decodeXref($startxref, $xref); } else { @@ -208,63 +208,63 @@ class TCPDF_PARSER { * @protected * @since 1.0.000 (2011-06-20) */ - protected function decodeXref($startxref, $xref=array()) { + protected function decodeXref($startxref, $xref=[]) { $startxref += 4; // 4 is the length of the word 'xref' // 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); // initialize object number $obj_num = 0; // 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) { // we are on another section break; } - $offset += strlen($matches[0][0]); + $offset += \strlen($matches[0][0]); if ($matches[3][0] == 'n') { // 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 if (!isset($xref['xref'][$index])) { // store object offset position - $xref['xref'][$index] = intval($matches[1][0]); + $xref['xref'][$index] = \intval($matches[1][0]); } ++$obj_num; } elseif ($matches[3][0] == 'f') { ++$obj_num; } else { // object number (index) - $obj_num = intval($matches[1][0]); + $obj_num = \intval($matches[1][0]); } } // 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 = $matches[1][0]; if (!isset($xref['trailer']) OR empty($xref['trailer'])) { // get only the last updated version - $xref['trailer'] = array(); + $xref['trailer'] = []; // parse trailer_data - if (preg_match('/Size[\s]+([0-9]+)/i', $trailer_data, $matches) > 0) { - $xref['trailer']['size'] = intval($matches[1]); + if (\preg_match('/Size[\s]+([0-9]+)/i', $trailer_data, $matches) > 0) { + $xref['trailer']['size'] = \intval($matches[1]); } - 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]); + 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]); } - 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]); + 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]); } - 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]); + 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]); } - if (preg_match('/ID[\s]*[\[][\s]*[<]([^>]*)[>][\s]*[<]([^>]*)[>]/i', $trailer_data, $matches) > 0) { - $xref['trailer']['id'] = array(); + if (\preg_match('/ID[\s]*[\[][\s]*[<]([^>]*)[>][\s]*[<]([^>]*)[>]/i', $trailer_data, $matches) > 0) { + $xref['trailer']['id'] = []; $xref['trailer']['id'][0] = $matches[1]; $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 - $xref = $this->getXrefData(intval($matches[1]), $xref); + $xref = $this->getXrefData(\intval($matches[1]), $xref); } } else { $this->Error('Unable to find trailer'); @@ -280,50 +280,50 @@ class TCPDF_PARSER { * @protected * @since 1.0.003 (2013-03-16) */ - protected function decodeXrefStream($startxref, $xref=array()) { + protected function decodeXrefStream($startxref, $xref=[]) { // try to read Cross-Reference Stream $xrefobj = $this->getRawObject($startxref); $xrefcrs = $this->getIndirectObject($xrefobj[1], $startxref, true); if (!isset($xref['trailer']) OR empty($xref['trailer'])) { // get only the last updated version - $xref['trailer'] = array(); + $xref['trailer'] = []; $filltrailer = true; } else { $filltrailer = false; } if (!isset($xref['xref'])) { - $xref['xref'] = array(); + $xref['xref'] = []; } $valid_crs = false; $columns = 0; $sarr = $xrefcrs[0][1]; if (!is_array($sarr)) { - $sarr = array(); + $sarr = []; } foreach ($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'))) { $valid_crs = true; } elseif (($v[0] == '/') AND ($v[1] == 'Index') AND (isset($sarr[($k +1)]))) { // 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 - $index_entries = intval($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'))) { // 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)]))) { // number of bytes (in the decoded stream) of the corresponding field - $wb = array(); - $wb[0] = intval($sarr[($k +1)][1][0][1]); - $wb[1] = intval($sarr[($k +1)][1][1][1]); - $wb[2] = intval($sarr[($k +1)][1][2][1]); + $wb = []; + $wb[0] = \intval($sarr[($k +1)][1][0][1]); + $wb[1] = \intval($sarr[($k +1)][1][1][1]); + $wb[2] = \intval($sarr[($k +1)][1][2][1]); } elseif (($v[0] == '/') AND ($v[1] == 'DecodeParms') AND (isset($sarr[($k +1)][1]))) { $decpar = $sarr[($k +1)][1]; foreach ($decpar as $kdc => $vdc) { if (($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'))) { - $predictor = intval($decpar[($kdc +1)][1]); + $predictor = \intval($decpar[($kdc +1)][1]); } } } elseif ($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'))) { $xref['trailer']['encrypt'] = $sarr[($k +1)][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'][1] = $sarr[($k +1)][1][1][1]; } @@ -351,13 +351,13 @@ class TCPDF_PARSER { // split the rows $sdata = array_chunk($sdata, $rowlen); // initialize decoded array - $ddata = array(); + $ddata = []; // initialize first row with zeros $prev_row = array_fill (0, $rowlen, 0); // for each row apply PNG unpredictor foreach ($sdata as $k => $row) { // initialize new row - $ddata[$k] = array(); + $ddata[$k] = []; // get PNG predictor value $predictor = (10 + $row[0]); // for each byte on the row @@ -393,10 +393,10 @@ class TCPDF_PARSER { // initial estimate $p = ($row_left + $row_up - $row_upleft); // distances - $pa = abs($p - $row_left); - $pb = abs($p - $row_up); - $pc = abs($p - $row_upleft); - $pmin = min($pa, $pb, $pc); + $pa = \abs($p - $row_left); + $pb = \abs($p - $row_up); + $pc = \abs($p - $row_upleft); + $pmin = \min($pa, $pb, $pc); // return minimum distance switch ($pmin) { case $pa: { @@ -423,7 +423,7 @@ class TCPDF_PARSER { $prev_row = $ddata[$k]; } // end for each row // complete decoding - $sdata = array(); + $sdata = []; // for every row foreach ($ddata as $k => $row) { // initialize new row @@ -444,7 +444,7 @@ class TCPDF_PARSER { } } } - $ddata = array(); + $ddata = []; // fill xref if (isset($index_first)) { $obj_num = $index_first; @@ -516,9 +516,9 @@ class TCPDF_PARSER { // name object $objtype = $char; ++$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 - $offset += strlen($objval); + $offset += \strlen($objval); } break; } @@ -552,7 +552,7 @@ class TCPDF_PARSER { } ++$strpos; } - $objval = substr($this->pdfdata, $offset, ($strpos - $offset - 1)); + $objval = \substr($this->pdfdata, $offset, ($strpos - $offset - 1)); $offset = $strpos; } break; @@ -564,7 +564,7 @@ class TCPDF_PARSER { ++$offset; if ($char == '[') { // get array content - $objval = array(); + $objval = []; do { // get element $element = $this->getRawObject($offset); @@ -584,7 +584,7 @@ class TCPDF_PARSER { $offset += 2; if ($char == '<') { // get array content - $objval = array(); + $objval = []; do { // get element $element = $this->getRawObject($offset); @@ -598,65 +598,65 @@ class TCPDF_PARSER { // hexadecimal string object $objtype = $char; ++$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 $objval = \str_replace(["\x09", "\x0a", "\x0c", "\x0d", "\x20"], '', $matches[1]); - $offset += strlen($matches[0]); - } elseif (($endpos = strpos($this->pdfdata, '>', $offset)) !== FALSE) { + $offset += \strlen($matches[0]); + } elseif (($endpos = \strpos($this->pdfdata, '>', $offset)) !== FALSE) { $offset = $endpos + 1; } } break; } default: { - if (substr($this->pdfdata, $offset, 6) == 'endobj') { + if (\substr($this->pdfdata, $offset, 6) == 'endobj') { // indirect object $objtype = 'endobj'; $offset += 6; - } elseif (substr($this->pdfdata, $offset, 4) == 'null') { + } elseif (\substr($this->pdfdata, $offset, 4) == 'null') { // null object $objtype = 'null'; $offset += 4; $objval = 'null'; - } elseif (substr($this->pdfdata, $offset, 4) == 'true') { + } elseif (\substr($this->pdfdata, $offset, 4) == 'true') { // boolean true object $objtype = 'boolean'; $offset += 4; $objval = 'true'; - } elseif (substr($this->pdfdata, $offset, 5) == 'false') { + } elseif (\substr($this->pdfdata, $offset, 5) == 'false') { // boolean false object $objtype = 'boolean'; $offset += 5; $objval = 'false'; - } elseif (substr($this->pdfdata, $offset, 6) == 'stream') { + } elseif (\substr($this->pdfdata, $offset, 6) == 'stream') { // start stream object $objtype = 'stream'; $offset += 6; - if (preg_match('/^([\r]?[\n])/isU', substr($this->pdfdata, $offset), $matches) == 1) { - $offset += strlen($matches[0]); - if (preg_match('/(endstream)[\x09\x0a\x0c\x0d\x20]/isU', substr($this->pdfdata, $offset), $matches, PREG_OFFSET_CAPTURE) == 1) { - $objval = substr($this->pdfdata, $offset, $matches[0][1]); + if (\preg_match('/^([\r]?[\n])/isU', \substr($this->pdfdata, $offset), $matches) == 1) { + $offset += \strlen($matches[0]); + 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]); $offset += $matches[1][1]; } } - } elseif (substr($this->pdfdata, $offset, 9) == 'endstream') { + } elseif (\substr($this->pdfdata, $offset, 9) == 'endstream') { // end stream object $objtype = 'endstream'; $offset += 9; - } elseif (preg_match('/^([0-9]+)[\s]+([0-9]+)[\s]+R/iU', substr($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 $objtype = 'objref'; - $offset += strlen($matches[0]); - $objval = intval($matches[1]).'_'.intval($matches[2]); - } elseif (preg_match('/^([0-9]+)[\s]+([0-9]+)[\s]+obj/iU', substr($this->pdfdata, $offset, 33), $matches) == 1) { + $offset += \strlen($matches[0]); + $objval = \intval($matches[1]).'_'.\intval($matches[2]); + } elseif (\preg_match('/^([0-9]+)[\s]+([0-9]+)[\s]+obj/iU', \substr($this->pdfdata, $offset, 33), $matches) == 1) { // object start $objtype = 'obj'; - $objval = intval($matches[1]).'_'.intval($matches[2]); + $objval = \intval($matches[1]).'_'.\intval($matches[2]); $offset += strlen ($matches[0]); } elseif (($numlen = strspn($this->pdfdata, '+-.0123456789', $offset)) > 0) { // numeric object $objtype = 'numeric'; - $objval = substr($this->pdfdata, $offset, $numlen); + $objval = \substr($this->pdfdata, $offset, $numlen); $offset += $numlen; } break; @@ -683,14 +683,14 @@ class TCPDF_PARSER { $objref = $obj[0].' '.$obj[1].' obj'; // ignore leading zeros $offset += strspn($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 return array('null', 'null', $offset); } // starting position of object content - $offset += strlen($objref); + $offset += \strlen($objref); // get array of object content - $objdata = array(); + $objdata = []; $i = 0; // object main index do { $oldoffset = $offset; @@ -742,18 +742,18 @@ class TCPDF_PARSER { */ protected function decodeStream($sdic, $stream) { // get stream length and filters - $slength = strlen($stream); + $slength = \strlen($stream); if ($slength <= 0) { - return array('', array()); + return array('', []); } - $filters = array(); + $filters = []; foreach ($sdic as $k => $v) { if ($v[0] == '/') { if (($v[1] == 'Length') AND (isset($sdic[($k + 1)])) AND ($sdic[($k + 1)][0] == 'numeric')) { // get declared stream length - $declength = intval($sdic[($k + 1)][1]); + $declength = \intval($sdic[($k + 1)][1]); if ($declength < $slength) { - $stream = substr($stream, 0, $declength); + $stream = \substr($stream, 0, $declength); $slength = $declength; } } elseif (($v[1] == 'Filter') AND (isset($sdic[($k + 1)]))) { @@ -774,7 +774,7 @@ class TCPDF_PARSER { } } // decode the stream - $remaining_filters = array(); + $remaining_filters = []; foreach ($filters as $filter) { if (in_array($filter, TCPDF_FILTERS::getAvailableFilters())) { try {