/**
* Rebuild content-streams
*
* @param array $obj
* @return string
*/
function _rebuildContentStream($obj)
{
$filters = array();
if (isset($obj[1][1]['/Filter'])) {
$_filter = $obj[1][1]['/Filter'];
if ($_filter[0] == PDF_TYPE_TOKEN) {
$filters[] = $_filter;
} else {
if ($_filter[0] == PDF_TYPE_ARRAY) {
$filters = $_filter[1];
}
}
}
$stream = $obj[2][1];
foreach ($filters as $_filter) {
switch ($_filter[1]) {
case '/FlateDecode':
if (function_exists('gzuncompress')) {
$stream = strlen($stream) > 0 ? @gzuncompress($stream) : '';
} else {
$this->error(sprintf('To handle %s filter, please compile php with zlib support.', $_filter[1]));
}
if ($stream === false) {
$this->error('Error while decompressing stream.');
}
break;
case '/LZWDecode':
include_once 'filters/FilterLZW_FPDI.php';
$decoder = new FilterLZW_FPDI($this->fpdi);
$stream = $decoder->decode($stream);
break;
case '/ASCII85Decode':
include_once 'filters/FilterASCII85_FPDI.php';
$decoder = new FilterASCII85_FPDI($this->fpdi);
$stream = $decoder->decode($stream);
break;
case null:
$stream = $stream;
break;
default:
$this->error(sprintf('Unsupported Filter: %s', $_filter[1]));
}
}
return $stream;
}
/**
* Rebuild content-streams
*
* @param array $obj
* @return string
*/
function _rebuildContentStream($obj)
{
$filters = array();
if (isset($obj[1][1]['/Filter'])) {
$_filter = $obj[1][1]['/Filter'];
if ($_filter[0] == PDF_TYPE_OBJREF) {
$tmpFilter = $this->pdf_resolve_object($this->c, $_filter);
$_filter = $tmpFilter[1];
}
if ($_filter[0] == PDF_TYPE_TOKEN) {
$filters[] = $_filter;
} elseif ($_filter[0] == PDF_TYPE_ARRAY) {
$filters = $_filter[1];
}
}
$stream = $obj[2][1];
foreach ($filters as $_filter) {
switch ($_filter[1]) {
case '/FlateDecode':
case '/Fl':
// $stream .= "\x0F\x0D"; // in an errorious stream this suffix could work
// $stream .= "\x0A";
// $stream .= "\x0D";
if (function_exists('gzuncompress')) {
$oStream = $stream;
$stream = strlen($stream) > 0 ? @gzuncompress($stream) : '';
} else {
$this->error(sprintf('To handle %s filter, please compile php with zlib support.', $_filter[1]));
}
if ($stream === false) {
$oStream = substr($oStream, 2);
$stream = @gzinflate($oStream);
if ($stream == false) {
$this->error('Error while decompressing stream.');
}
}
break;
case '/LZWDecode':
include_once 'filters/FilterLZW_FPDI.php';
$decoder = new FilterLZW_FPDI($this->fpdi);
$stream = $decoder->decode($stream);
break;
case '/ASCII85Decode':
include_once 'filters/FilterASCII85_FPDI.php';
$decoder = new FilterASCII85_FPDI($this->fpdi);
$stream = $decoder->decode($stream);
break;
case null:
$stream = $stream;
break;
default:
$this->error(sprintf('Unsupported Filter: %s', $_filter[1]));
}
}
return $stream;
}