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tcpdi.php
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tcpdi.php
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<?php
//
// TCPDI - Version 1.0
// Based on FPDI - Version 1.4.4
//
// Copyright 2004-2013 Setasign - Jan Slabon
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Dummy shim to allow unmodified use of fpdf_tpl
class FPDF extends TCPDF {}
require_once('fpdf_tpl.php');
require_once('tcpdi_parser.php');
class TCPDI extends FPDF_TPL {
/**
* Actual filename
* @var string
*/
var $current_filename;
/**
* Parser-Objects
* @var array
*/
var $parsers;
/**
* Current parser
* @var object
*/
var $current_parser;
/**
* object stack
* @var array
*/
var $_obj_stack;
/**
* done object stack
* @var array
*/
var $_don_obj_stack;
/**
* Current Object Id.
* @var integer
*/
var $_current_obj_id;
/**
* The name of the last imported page box
* @var string
*/
var $lastUsedPageBox;
/**
* Cache for imported pages/template ids
* @var array
*/
var $_importedPages = array();
/**
* Set a source-file
*
* @param string $filename a valid filename
* @return int number of available pages
*/
function setSourceFile($filename) {
$this->current_filename = $filename;
if (!isset($this->parsers[$filename]))
$this->parsers[$filename] = $this->_getPdfParser($filename);
$this->current_parser =& $this->parsers[$filename];
$this->setPDFVersion(max($this->getPDFVersion(), $this->current_parser->getPDFVersion()));
return $this->parsers[$filename]->getPageCount();
}
/**
* Set a source-file PDF data
*
* @param string $pdfdata The PDF file content
* @return int number of available pages
*/
function setSourceData($pdfdata) {
$filename = uniqid('tcpdi-');
$this->current_filename = $filename;
if (!isset($this->parsers[$filename]))
$this->parsers[$filename] = new tcpdi_parser($pdfdata, $filename);
$this->current_parser =& $this->parsers[$filename];
$this->setPDFVersion(max($this->getPDFVersion(), $this->current_parser->getPDFVersion()));
return $this->parsers[$filename]->getPageCount();
}
/**
* Returns a PDF parser object
*
* @param string $filename
* @return fpdi_pdf_parser
*/
function _getPdfParser($filename) {
$data = file_get_contents($filename);
return new tcpdi_parser($data, $filename);
}
/**
* Get the current PDF version
*
* @return string
*/
function getPDFVersion() {
return $this->PDFVersion;
}
/**
* Set the PDF version
*
* @return string
*/
function setPDFVersion($version = '1.3') {
$this->PDFVersion = $version;
}
/**
* Import a page
*
* @param int $pageno pagenumber
* @return int Index of imported page - to use with fpdf_tpl::useTemplate()
*/
function importPage($pageno, $boxName = '/CropBox') {
if ($this->_intpl) {
return $this->error('Please import the desired pages before creating a new template.');
}
$fn = $this->current_filename;
// check if page already imported
$pageKey = $fn . '-' . ((int)$pageno) . $boxName;
if (isset($this->_importedPages[$pageKey]))
return $this->_importedPages[$pageKey];
$parser =& $this->parsers[$fn];
$parser->setPageno($pageno);
if (!in_array($boxName, $parser->availableBoxes))
return $this->Error(sprintf('Unknown box: %s', $boxName));
$pageboxes = $parser->getPageBoxes($pageno, $this->k);
/**
* MediaBox
* CropBox: Default -> MediaBox
* BleedBox: Default -> CropBox
* TrimBox: Default -> CropBox
* ArtBox: Default -> CropBox
*/
if (!isset($pageboxes[$boxName]) && ($boxName == '/BleedBox' || $boxName == '/TrimBox' || $boxName == '/ArtBox'))
$boxName = '/CropBox';
if (!isset($pageboxes[$boxName]) && $boxName == '/CropBox')
$boxName = '/MediaBox';
if (!isset($pageboxes[$boxName]))
return false;
$this->lastUsedPageBox = $boxName;
$box = $pageboxes[$boxName];
$this->tpl++;
$this->tpls[$this->tpl] = array();
$tpl =& $this->tpls[$this->tpl];
$tpl['parser'] =& $parser;
$tpl['resources'] = $parser->getPageResources();
$tpl['buffer'] = $parser->getContent();
$tpl['box'] = $box;
// To build an array that can be used by PDF_TPL::useTemplate()
$this->tpls[$this->tpl] = array_merge($this->tpls[$this->tpl], $box);
// An imported page will start at 0,0 everytime. Translation will be set in _putformxobjects()
$tpl['x'] = 0;
$tpl['y'] = 0;
// handle rotated pages
$rotation = $parser->getPageRotation($pageno);
$tpl['_rotationAngle'] = 0;
if (isset($rotation[1]) && ($angle = $rotation[1] % 360) != 0) {
$steps = $angle / 90;
$_w = $tpl['w'];
$_h = $tpl['h'];
$tpl['w'] = $steps % 2 == 0 ? $_w : $_h;
$tpl['h'] = $steps % 2 == 0 ? $_h : $_w;
if ($angle < 0)
$angle += 360;
$tpl['_rotationAngle'] = $angle * -1;
}
$this->_importedPages[$pageKey] = $this->tpl;
return $this->tpl;
}
/**
* Returns the last used page box
*
* @return string
*/
function getLastUsedPageBox() {
return $this->lastUsedPageBox;
}
function useTemplate($tplidx, $_x = null, $_y = null, $_w = 0, $_h = 0, $adjustPageSize = false) {
if ($adjustPageSize == true && is_null($_x) && is_null($_y)) {
$size = $this->getTemplateSize($tplidx, $_w, $_h);
$orientation = $size['w'] > $size['h'] ? 'L' : 'P';
$size = array($size['w'], $size['h']);
$this->setPageFormat($size, $orientation);
}
$this->_out('q 0 J 1 w 0 j 0 G 0 g'); // reset standard values
$s = parent::useTemplate($tplidx, $_x, $_y, $_w, $_h);
$this->_out('Q');
return $s;
}
/**
* Private method, that rebuilds all needed objects of source files
*/
function _putimportedobjects() {
if (is_array($this->parsers) && count($this->parsers) > 0) {
foreach($this->parsers AS $filename => $p) {
$this->current_parser =& $this->parsers[$filename];
if (isset($this->_obj_stack[$filename]) && is_array($this->_obj_stack[$filename])) {
while(($n = key($this->_obj_stack[$filename])) !== null) {
$nObj = $this->current_parser->getObjectVal($this->_obj_stack[$filename][$n][1]);
$this->_newobj($this->_obj_stack[$filename][$n][0]);
if ($nObj[0] == PDF_TYPE_STREAM) {
$this->pdf_write_value($nObj);
} else {
$this->pdf_write_value($nObj[1]);
}
$this->_out('endobj');
$this->_obj_stack[$filename][$n] = null; // free memory
unset($this->_obj_stack[$filename][$n]);
reset($this->_obj_stack[$filename]);
}
}
// We're done with this parser. Clean it up to free a bit of RAM.
$this->current_parser->cleanUp();
unset($this->parsers[$filename]);
}
}
}
/**
* Private Method that writes the form xobjects
*/
function _putformxobjects() {
$filter=($this->compress) ? '/Filter /FlateDecode ' : '';
reset($this->tpls);
foreach($this->tpls AS $tplidx => $tpl) {
$p=($this->compress) ? gzcompress($tpl['buffer']) : $tpl['buffer'];
$this->_newobj();
$cN = $this->n; // TCPDF/Protection: rem current "n"
$this->tpls[$tplidx]['n'] = $this->n;
$this->_out('<<' . $filter . '/Type /XObject');
$this->_out('/Subtype /Form');
$this->_out('/FormType 1');
$this->_out(sprintf('/BBox [%.2F %.2F %.2F %.2F]',
(isset($tpl['box']['llx']) ? $tpl['box']['llx'] : $tpl['x']) * $this->k,
(isset($tpl['box']['lly']) ? $tpl['box']['lly'] : -$tpl['y']) * $this->k,
(isset($tpl['box']['urx']) ? $tpl['box']['urx'] : $tpl['w'] + $tpl['x']) * $this->k,
(isset($tpl['box']['ury']) ? $tpl['box']['ury'] : $tpl['h'] - $tpl['y']) * $this->k
));
$c = 1;
$s = 0;
$tx = 0;
$ty = 0;
if (isset($tpl['box'])) {
$tx = -$tpl['box']['llx'];
$ty = -$tpl['box']['lly'];
if ($tpl['_rotationAngle'] <> 0) {
$angle = $tpl['_rotationAngle'] * M_PI/180;
$c=cos($angle);
$s=sin($angle);
switch($tpl['_rotationAngle']) {
case -90:
$tx = -$tpl['box']['lly'];
$ty = $tpl['box']['urx'];
break;
case -180:
$tx = $tpl['box']['urx'];
$ty = $tpl['box']['ury'];
break;
case -270:
$tx = $tpl['box']['ury'];
$ty = -$tpl['box']['llx'];
break;
}
}
} elseif ($tpl['x'] != 0 || $tpl['y'] != 0) {
$tx = -$tpl['x'] * 2;
$ty = $tpl['y'] * 2;
}
$tx *= $this->k;
$ty *= $this->k;
if ($c != 1 || $s != 0 || $tx != 0 || $ty != 0) {
$this->_out(sprintf('/Matrix [%.5F %.5F %.5F %.5F %.5F %.5F]',
$c, $s, -$s, $c, $tx, $ty
));
}
$this->_out('/Resources ');
if (isset($tpl['resources'])) {
$this->current_parser =& $tpl['parser'];
$this->pdf_write_value($tpl['resources']); // "n" will be changed
} else {
$this->_out('<</ProcSet [/PDF /Text /ImageB /ImageC /ImageI]');
if (isset($this->_res['tpl'][$tplidx]['fonts']) && count($this->_res['tpl'][$tplidx]['fonts'])) {
$this->_out('/Font <<');
foreach($this->_res['tpl'][$tplidx]['fonts'] as $font)
$this->_out('/F' . $font['i'] . ' ' . $font['n'] . ' 0 R');
$this->_out('>>');
}
if(isset($this->_res['tpl'][$tplidx]['images']) && count($this->_res['tpl'][$tplidx]['images']) ||
isset($this->_res['tpl'][$tplidx]['tpls']) && count($this->_res['tpl'][$tplidx]['tpls']))
{
$this->_out('/XObject <<');
if (isset($this->_res['tpl'][$tplidx]['images']) && count($this->_res['tpl'][$tplidx]['images'])) {
foreach($this->_res['tpl'][$tplidx]['images'] as $image)
$this->_out('/I' . $image['i'] . ' ' . $image['n'] . ' 0 R');
}
if (isset($this->_res['tpl'][$tplidx]['tpls']) && count($this->_res['tpl'][$tplidx]['tpls'])) {
foreach($this->_res['tpl'][$tplidx]['tpls'] as $i => $tpl)
$this->_out($this->tplprefix . $i . ' ' . $tpl['n'] . ' 0 R');
}
$this->_out('>>');
}
$this->_out('>>');
}
$this->_out('/Group <</Type/Group/S/Transparency>>');
$nN = $this->n; // TCPDF: rem new "n"
$this->n = $cN; // TCPDF: reset to current "n"
$p = $this->_getrawstream($p);
$this->_out('/Length ' . strlen($p) . ' >>');
$this->_out("stream\n" . $p . "\nendstream");
$this->_out('endobj');
$this->n = $nN; // TCPDF: reset to new "n"
}
$this->_putimportedobjects();
}
/**
* Rewritten to handle existing own defined objects
*/
function _newobj($obj_id = false, $onlynewobj = false) {
if (!$obj_id) {
$obj_id = ++$this->n;
}
//Begin a new object
if (!$onlynewobj) {
$this->offsets[$obj_id] = $this->bufferlen;
$this->_out($obj_id . ' 0 obj');
$this->_current_obj_id = $obj_id; // for later use with encryption
}
return $obj_id;
}
/**
* Writes a value
* Needed to rebuild the source document
*
* @param mixed $value A PDF-Value. Structure of values see cases in this method
*/
function pdf_write_value(&$value)
{
switch ($value[0]) {
case PDF_TYPE_STRING:
if ($this->encrypted) {
$value[1] = $this->_unescape($value[1]);
$value[1] = $this->_encrypt_data($this->_current_obj_id, $value[1]);
$value[1] = TCPDF_STATIC::_escape($value[1]);
}
break;
case PDF_TYPE_STREAM:
if ($this->encrypted) {
$value[2][1] = $this->_encrypt_data($this->_current_obj_id, $value[2][1]);
$value[1][1]['/Length'] = array(
PDF_TYPE_NUMERIC,
strlen($value[2][1])
);
}
break;
case PDF_TYPE_HEX:
if ($this->encrypted) {
$value[1] = $this->hex2str($value[1]);
$value[1] = $this->_encrypt_data($this->_current_obj_id, $value[1]);
// remake hexstring of encrypted string
$value[1] = $this->str2hex($value[1]);
}
break;
}
switch ($value[0]) {
case PDF_TYPE_TOKEN:
$this->_straightOut('/'.$value[1] . ' ');
break;
case PDF_TYPE_NUMERIC:
case PDF_TYPE_REAL:
if (is_float($value[1]) && $value[1] != 0) {
$this->_straightOut(rtrim(rtrim(sprintf('%F', $value[1]), '0'), '.') . ' ');
} else {
$this->_straightOut($value[1] . ' ');
}
break;
case PDF_TYPE_ARRAY:
// An array. Output the proper
// structure and move on.
$this->_straightOut('[');
for ($i = 0; $i < count($value[1]); $i++) {
$this->pdf_write_value($value[1][$i]);
}
$this->_out(']');
break;
case PDF_TYPE_DICTIONARY:
// A dictionary.
$this->_straightOut('<<');
reset ($value[1]);
while (list($k, $v) = each($value[1])) {
$this->_straightOut($k . ' ');
$this->pdf_write_value($v);
}
$this->_straightOut('>>');
break;
case PDF_TYPE_OBJREF:
// An indirect object reference
// Fill the object stack if needed
$cpfn =& $this->current_parser->uniqueid;
if (!isset($this->_don_obj_stack[$cpfn][$value[1]])) {
$this->_newobj(false, true);
$this->_obj_stack[$cpfn][$value[1]] = array($this->n, $value);
$this->_don_obj_stack[$cpfn][$value[1]] = array($this->n, $value); // Value is maybee obsolete!!!
}
$objid = $this->_don_obj_stack[$cpfn][$value[1]][0];
$this->_out($objid . ' 0 R');
break;
case PDF_TYPE_STRING:
// A string.
$this->_straightOut('(' . $value[1] . ')');
break;
case PDF_TYPE_STREAM:
// A stream. First, output the
// stream dictionary, then the
// stream data itself.
$this->pdf_write_value($value[1]);
$this->_out('stream');
$this->_out($value[2][1]);
$this->_out('endstream');
break;
case PDF_TYPE_HEX:
$this->_straightOut('<' . $value[1] . '>');
break;
case PDF_TYPE_BOOLEAN:
$this->_straightOut($value[1] ? 'true ' : 'false ');
break;
case PDF_TYPE_NULL:
// The null object.
$this->_straightOut('null ');
break;
}
}
/**
* Modified so not each call will add a newline to the output.
*/
function _straightOut($s) {
if ($this->state == 2) {
if ($this->inxobj) {
// we are inside an XObject template
$this->xobjects[$this->xobjid]['outdata'] .= $s;
} elseif ((!$this->InFooter) AND isset($this->footerlen[$this->page]) AND ($this->footerlen[$this->page] > 0)) {
// puts data before page footer
$pagebuff = $this->getPageBuffer($this->page);
$page = substr($pagebuff, 0, -$this->footerlen[$this->page]);
$footer = substr($pagebuff, -$this->footerlen[$this->page]);
$this->setPageBuffer($this->page, $page.$s.$footer);
// update footer position
$this->footerpos[$this->page] += strlen($s);
} else {
// set page data
$this->setPageBuffer($this->page, $s, true);
}
} elseif ($this->state > 0) {
// set general data
$this->setBuffer($s);
}
}
/**
* rewritten to close opened parsers
*
*/
function _enddoc() {
parent::_enddoc();
$this->_closeParsers();
}
/**
* close all files opened by parsers
*/
function _closeParsers() {
if ($this->state > 2 && count($this->parsers) > 0) {
$this->cleanUp();
return true;
}
return false;
}
/**
* Removes cylced references and closes the file handles of the parser objects
*/
function cleanUp() {
foreach ($this->parsers as $k => $_){
$this->parsers[$k]->cleanUp();
$this->parsers[$k] = null;
unset($this->parsers[$k]);
}
}
// Functions from here on are taken from FPDI's fpdi2tcpdf_bridge.php to remove dependence on it
function _putstream($s, $n=0) {
$this->_out($this->_getstream($s, $n));
}
function _getxobjectdict() {
$out = parent::_getxobjectdict();
if (count($this->tpls)) {
foreach($this->tpls as $tplidx => $tpl) {
$out .= sprintf('%s%d %d 0 R', $this->tplprefix, $tplidx, $tpl['n']);
}
}
return $out;
}
/**
* Unescapes a PDF string
*
* @param string $s
* @return string
*/
function _unescape($s) {
$out = '';
for ($count = 0, $n = strlen($s); $count < $n; $count++) {
if ($s[$count] != '\\' || $count == $n-1) {
$out .= $s[$count];
} else {
switch ($s[++$count]) {
case ')':
case '(':
case '\\':
$out .= $s[$count];
break;
case 'f':
$out .= chr(0x0C);
break;
case 'b':
$out .= chr(0x08);
break;
case 't':
$out .= chr(0x09);
break;
case 'r':
$out .= chr(0x0D);
break;
case 'n':
$out .= chr(0x0A);
break;
case "\r":
if ($count != $n-1 && $s[$count+1] == "\n")
$count++;
break;
case "\n":
break;
default:
// Octal-Values
if (ord($s[$count]) >= ord('0') &&
ord($s[$count]) <= ord('9')) {
$oct = ''. $s[$count];
if (ord($s[$count+1]) >= ord('0') &&
ord($s[$count+1]) <= ord('9')) {
$oct .= $s[++$count];
if (ord($s[$count+1]) >= ord('0') &&
ord($s[$count+1]) <= ord('9')) {
$oct .= $s[++$count];
}
}
$out .= chr(octdec($oct));
} else {
$out .= $s[$count];
}
}
}
}
return $out;
}
/**
* Hexadecimal to string
*
* @param string $hex
* @return string
*/
function hex2str($hex) {
return pack('H*', str_replace(array("\r", "\n", ' '), '', $hex));
}
/**
* String to hexadecimal
*
* @param string $str
* @return string
*/
function str2hex($str) {
return current(unpack('H*', $str));
}
}