File: /home/asjudine/www/avigilajudicial/libs/dompdf/include/dompdf.cls.php
<?php
/**
* @package dompdf
* @link http://www.dompdf.com/
* @author Benj Carson <benjcarson@digitaljunkies.ca>
* @author Fabien Ménager <fabien.menager@gmail.com>
* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
* @version $Id: dompdf.cls.php 468 2012-02-05 10:51:40Z fabien.menager $
*/
/**
* DOMPDF - PHP5 HTML to PDF renderer
*
* DOMPDF loads HTML and does its best to render it as a PDF. It gets its
* name from the new DomDocument PHP5 extension. Source HTML is first
* parsed by a DomDocument object. DOMPDF takes the resulting DOM tree and
* attaches a {@link Frame} object to each node. {@link Frame} objects store
* positioning and layout information and each has a reference to a {@link
* Style} object.
*
* Style information is loaded and parsed (see {@link Stylesheet}) and is
* applied to the frames in the tree by using XPath. CSS selectors are
* converted into XPath queries, and the computed {@link Style} objects are
* applied to the {@link Frame}s.
*
* {@link Frame}s are then decorated (in the design pattern sense of the
* word) based on their CSS display property ({@link
* http://www.w3.org/TR/CSS21/visuren.html#propdef-display}).
* Frame_Decorators augment the basic {@link Frame} class by adding
* additional properties and methods specific to the particular type of
* {@link Frame}. For example, in the CSS layout model, block frames
* (display: block;) contain line boxes that are usually filled with text or
* other inline frames. The Block_Frame_Decorator therefore adds a $lines
* property as well as methods to add {@link Frame}s to lines and to add
* additional lines. {@link Frame}s also are attached to specific
* Positioner and {@link Frame_Reflower} objects that contain the
* positioining and layout algorithm for a specific type of frame,
* respectively. This is an application of the Strategy pattern.
*
* Layout, or reflow, proceeds recursively (post-order) starting at the root
* of the document. Space constraints (containing block width & height) are
* pushed down, and resolved positions and sizes bubble up. Thus, every
* {@link Frame} in the document tree is traversed once (except for tables
* which use a two-pass layout algorithm). If you are interested in the
* details, see the reflow() method of the Reflower classes.
*
* Rendering is relatively straightforward once layout is complete. {@link
* Frame}s are rendered using an adapted {@link Cpdf} class, originally
* written by Wayne Munro, http://www.ros.co.nz/pdf/. (Some performance
* related changes have been made to the original {@link Cpdf} class, and
* the {@link CPDF_Adapter} class provides a simple, stateless interface to
* PDF generation.) PDFLib support has now also been added, via the {@link
* PDFLib_Adapter}.
*
*
* @package dompdf
*/
class DOMPDF {
/**
* DomDocument representing the HTML document
*
* @var DomDocument
*/
protected $_xml;
/**
* Frame_Tree derived from the DOM tree
*
* @var Frame_Tree
*/
protected $_tree;
/**
* Stylesheet for the document
*
* @var Stylesheet
*/
protected $_css;
/**
* Actual PDF renderer
*
* @var Canvas
*/
protected $_pdf;
/**
* Desired paper size ('letter', 'legal', 'A4', etc.)
*
* @var string
*/
protected $_paper_size;
/**
* Paper orientation ('portrait' or 'landscape')
*
* @var string
*/
protected $_paper_orientation;
/**
* Callbacks on new page and new element
*
* @var array
*/
protected $_callbacks;
/**
* Experimental caching capability
*
* @var string
*/
private $_cache_id;
/**
* Base hostname
*
* Used for relative paths/urls
* @var string
*/
protected $_base_host;
/**
* Absolute base path
*
* Used for relative paths/urls
* @var string
*/
protected $_base_path;
/**
* Protcol used to request file (file://, http://, etc)
*
* @var string
*/
protected $_protocol;
/**
* HTTP context created with stream_context_create()
* Will be used for file_get_contents
*
* @var resource
*/
protected $_http_context;
/**
* Timestamp of the script start time
*
* @var int
*/
private $_start_time = null;
/**
* @var string The system's locale
*/
private $_system_locale = null;
/**
* @var bool Tells if the system's locale is the C standard one
*/
private $_locale_standard = false;
/**
* @var string The default view of the PDF in the viewer
*/
private $_default_view = "Fit";
/**
* @var array The default view options of the PDF in the viewer
*/
private $_default_view_options = array();
/**
* @var bool Tells wether the DOM document is in quirksmode (experimental)
*/
private $_quirksmode = false;
public static $native_fonts = array("courier", "courier-bold", "courier-oblique", "courier-boldoblique",
"helvetica", "helvetica-bold", "helvetica-oblique", "helvetica-boldoblique",
"times-roman", "times-bold", "times-italic", "times-bolditalic",
"symbol", "zapfdinbats");
/**
* Class constructor
*/
function __construct() {
$this->_locale_standard = sprintf('%.1f', 1.0) == '1.0';
$this->save_locale();
$this->_messages = array();
$this->_css = new Stylesheet($this);
$this->_pdf = null;
$this->_paper_size = "letter";
$this->_paper_orientation = "portrait";
$this->_base_protocol = "";
$this->_base_host = "";
$this->_base_path = "";
$this->_http_context = null;
$this->_callbacks = array();
$this->_cache_id = null;
$this->restore_locale();
}
/**
* Class destructor
*/
function __destruct() {
clear_object($this);
}
/**
* Save the system's locale configuration and
* set the right value for numeric formatting
*/
private function save_locale() {
if ( $this->_locale_standard ) return;
$this->_system_locale = setlocale(LC_NUMERIC, "C");
}
/**
* Restore the system's locale configuration
*/
private function restore_locale() {
if ( $this->_locale_standard ) return;
setlocale(LC_NUMERIC, $this->_system_locale);
}
/**
* Returns the underlying {@link Frame_Tree} object
*
* @return Frame_Tree
*/
function get_tree() { return $this->_tree; }
/**
* Sets the protocol to use
* FIXME validate these
*
* @param string $proto
*/
function set_protocol($proto) { $this->_protocol = $proto; }
/**
* Sets the base hostname
*
* @param string $host
*/
function set_host($host) { $this->_base_host = $host; }
/**
* Sets the base path
*
* @param string $path
*/
function set_base_path($path) { $this->_base_path = $path; }
/**
* Sets the HTTP context
*
* @param resource $http_context
*/
function set_http_context($http_context) { $this->_http_context = $http_context; }
/**
* Sets the default view
*
* @param string $default_view
*/
function set_default_view($default_view, $options) {
$this->_default_view = $default_view;
$this->_default_view_options = $options;
}
/**
* Returns the protocol in use
*
* @return string
*/
function get_protocol() { return $this->_protocol; }
/**
* Returns the base hostname
*
* @return string
*/
function get_host() { return $this->_base_host; }
/**
* Returns the base path
*
* @return string
*/
function get_base_path() { return $this->_base_path; }
/**
* Returns the HTTP context
*
* @return resource
*/
function get_http_context() { return $this->_http_context; }
/**
* Return the underlying Canvas instance (e.g. CPDF_Adapter, GD_Adapter)
*
* @return Canvas
*/
function get_canvas() { return $this->_pdf; }
/**
* Returns the callbacks array
*
* @return array
*/
function get_callbacks() { return $this->_callbacks; }
/**
* Returns the stylesheet
*
* @return Stylesheet
*/
function get_css() { return $this->_css; }
/**
* Loads an HTML file
*
* Parse errors are stored in the global array _dompdf_warnings.
*
* @param string $file a filename or url to load
*/
function load_html_file($file) {
$this->save_locale();
// Store parsing warnings as messages (this is to prevent output to the
// browser if the html is ugly and the dom extension complains,
// preventing the pdf from being streamed.)
if ( !$this->_protocol && !$this->_base_host && !$this->_base_path )
list($this->_protocol, $this->_base_host, $this->_base_path) = explode_url($file);
if ( !DOMPDF_ENABLE_REMOTE &&
($this->_protocol != "" && $this->_protocol !== "file://" ) )
throw new DOMPDF_Exception("Remote file requested, but DOMPDF_ENABLE_REMOTE is false.");
if ($this->_protocol == "" || $this->_protocol === "file://") {
$realfile = realpath($file);
if ( !$file )
throw new DOMPDF_Exception("File '$file' not found.");
if ( strpos($realfile, DOMPDF_CHROOT) !== 0 )
throw new DOMPDF_Exception("Permission denied on $file.");
// Exclude dot files (e.g. .htaccess)
if ( substr(basename($realfile),0,1) === "." )
throw new DOMPDF_Exception("Permission denied on $file.");
$file = $realfile;
}
$contents = file_get_contents($file, null, $this->_http_context);
$encoding = null;
// See http://the-stickman.com/web-development/php/getting-http-response-headers-when-using-file_get_contents/
if ( isset($http_response_header) ) {
foreach($http_response_header as $_header) {
if ( preg_match("@Content-Type:\s*[\w/]+;\s*?charset=([^\s]+)@i", $_header, $matches) ) {
$encoding = strtoupper($matches[1]);
break;
}
}
}
$this->restore_locale();
$this->load_html($contents, $encoding);
}
/**
* Loads an HTML string
*
* Parse errors are stored in the global array _dompdf_warnings.
*
* @todo use the $encoding variable
* @param string $str HTML text to load
*/
function load_html($str, $encoding = null) {
$this->save_locale();
// FIXME: Determine character encoding, switch to UTF8, update meta tag. Need better http/file stream encoding detection, currently relies on text or meta tag.
mb_detect_order('auto');
if (mb_detect_encoding($str) !== 'UTF-8') {
$metatags = array(
'@<meta\s+http-equiv="Content-Type"\s+content="(?:[\w/]+)(?:;\s*?charset=([^\s"]+))?@i',
'@<meta\s+content="(?:[\w/]+)(?:;\s*?charset=([^\s"]+))"?\s+http-equiv="Content-Type"@i',
'@<meta [^>]*charset\s*=\s*["\']?\s*([^"\' ]+)@i',
);
foreach($metatags as $metatag) {
if (preg_match($metatag, $str, $matches)) break;
}
if (mb_detect_encoding($str) == '') {
if (isset($matches[1])) {
$encoding = strtoupper($matches[1]);
} else {
$encoding = 'UTF-8';
}
} else {
if (isset($matches[1])) {
$encoding = strtoupper($matches[1]);
} else {
$encoding = 'auto';
}
}
if ($encoding !== 'UTF-8') {
$str = mb_convert_encoding($str, 'UTF-8', $encoding);
}
if (isset($matches[1])) {
$str = preg_replace('/charset=([^\s"]+)/i', 'charset=UTF-8', $str);
} else {
$str = str_replace('<head>', '<head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8">', $str);
}
} else {
$encoding = 'UTF-8';
}
// remove BOM mark from UTF-8, it's treated as document text by DOMDocument
// FIXME: roll this into the encoding detection using UTF-8/16/32 BOM (http://us2.php.net/manual/en/function.mb-detect-encoding.php#91051)?
if (substr($str, 0, 3) == chr(0xEF).chr(0xBB).chr(0xBF)) {
$str = substr($str, 3);
}
// Parse embedded php, first-pass
if ( DOMPDF_ENABLE_PHP ) {
ob_start();
eval("?" . ">$str");
$str = ob_get_clean();
}
// if the document contains non utf-8 with a utf-8 meta tag chars and was
// detected as utf-8 by mbstring, problems could happen.
// http://devzone.zend.com/article/8855
if ( $encoding !== 'UTF-8' ) {
$re = '/<meta ([^>]*)((?:charset=[^"\' ]+)([^>]*)|(?:charset=["\'][^"\' ]+["\']))([^>]*)>/i';
$str = preg_replace($re, '<meta $1$3>', $str);
}
// Store parsing warnings as messages
set_error_handler("record_warnings");
// @todo Take the quirksmode into account
// http://hsivonen.iki.fi/doctype/
// https://developer.mozilla.org/en/mozilla's_quirks_mode
$quirksmode = false;
if ( DOMPDF_ENABLE_HTML5PARSER ) {
$tokenizer = new HTML5_Tokenizer($str);
$tokenizer->parse();
$doc = $tokenizer->save();
// Remove #text children nodes in nodes that shouldn't have
$tag_names = array("html", "table", "tbody", "thead", "tfoot", "tr");
foreach($tag_names as $tag_name) {
$nodes = $doc->getElementsByTagName($tag_name);
foreach($nodes as $node) {
self::remove_text_nodes($node);
}
}
$quirksmode = ($tokenizer->getTree()->getQuirksMode() > HTML5_TreeBuilder::NO_QUIRKS);
}
else {
$doc = new DOMDocument();
$doc->preserveWhiteSpace = true;
$doc->loadHTML($str);
// If some text is before the doctype of before the <html> tag, we are in quirksmode
if ( preg_match("/^(.+)<(!doctype|html)/i", ltrim($str), $matches) ) {
$quirksmode = true;
}
else {
// HTML5 <!DOCTYPE html>
if ( !$doc->doctype->publicId && !$doc->doctype->systemId ) {
$quirksmode = false;
}
// not XHTML
if ( !preg_match("/xhtml/i", $doc->doctype->publicId) ) {
$quirksmode = true;
}
}
}
$this->_xml = $doc;
$this->_quirksmode = $quirksmode;
$this->_tree = new Frame_Tree($this->_xml);
restore_error_handler();
$this->restore_locale();
}
static function remove_text_nodes(DOMNode $node) {
$children = array();
for ($i = 0; $i < $node->childNodes->length; $i++) {
$child = $node->childNodes->item($i);
if ( $child->nodeName === "#text" ) {
$children[] = $child;
}
}
foreach($children as $child) {
$node->removeChild($child);
}
}
/**
* Builds the {@link Frame_Tree}, loads any CSS and applies the styles to
* the {@link Frame_Tree}
*/
protected function _process_html() {
$this->save_locale();
$this->_tree->build_tree();
$this->_css->load_css_file(Stylesheet::DEFAULT_STYLESHEET, Stylesheet::ORIG_UA);
$acceptedmedia = Stylesheet::$ACCEPTED_GENERIC_MEDIA_TYPES;
if ( defined("DOMPDF_DEFAULT_MEDIA_TYPE") ) {
$acceptedmedia[] = DOMPDF_DEFAULT_MEDIA_TYPE;
} else {
$acceptedmedia[] = Stylesheet::$ACCEPTED_DEFAULT_MEDIA_TYPE;
}
// load <link rel="STYLESHEET" ... /> tags
$links = $this->_xml->getElementsByTagName("link");
foreach ($links as $link) {
if ( mb_strtolower($link->getAttribute("rel")) === "stylesheet" ||
mb_strtolower($link->getAttribute("type")) === "text/css" ) {
//Check if the css file is for an accepted media type
//media not given then always valid
$formedialist = preg_split("/[\s\n,]/", $link->getAttribute("media"),-1, PREG_SPLIT_NO_EMPTY);
if ( count($formedialist) > 0 ) {
$accept = false;
foreach ( $formedialist as $type ) {
if ( in_array(mb_strtolower(trim($type)), $acceptedmedia) ) {
$accept = true;
break;
}
}
if (!$accept) {
//found at least one mediatype, but none of the accepted ones
//Skip this css file.
continue;
}
}
$url = $link->getAttribute("href");
$url = build_url($this->_protocol, $this->_base_host, $this->_base_path, $url);
$this->_css->load_css_file($url, Stylesheet::ORIG_AUTHOR);
}
}
// Set the base path of the Stylesheet to that of the file being processed
$this->_css->set_protocol($this->_protocol);
$this->_css->set_host($this->_base_host);
$this->_css->set_base_path($this->_base_path);
// load <style> tags
$styles = $this->_xml->getElementsByTagName("style");
foreach ($styles as $style) {
// Accept all <style> tags by default (note this is contrary to W3C
// HTML 4.0 spec:
// http://www.w3.org/TR/REC-html40/present/styles.html#adef-media
// which states that the default media type is 'screen'
if ( $style->hasAttributes() &&
($media = $style->getAttribute("media")) &&
!in_array($media, $acceptedmedia) )
continue;
$css = "";
if ( $style->hasChildNodes() ) {
$child = $style->firstChild;
while ( $child ) {
$css .= $child->nodeValue; // Handle <style><!-- blah --></style>
$child = $child->nextSibling;
}
} else
$css = $style->nodeValue;
$this->_css->load_css($css);
}
$this->restore_locale();
}
/**
* Sets the paper size & orientation
*
* @param string $size 'letter', 'legal', 'A4', etc. {@link CPDF_Adapter::$PAPER_SIZES}
* @param string $orientation 'portrait' or 'landscape'
*/
function set_paper($size, $orientation = "portrait") {
$this->_paper_size = $size;
$this->_paper_orientation = $orientation;
}
/**
* Enable experimental caching capability
* @access private
*/
function enable_caching($cache_id) {
$this->_cache_id = $cache_id;
}
/**
* Sets callbacks for events like rendering of pages and elements.
* The callbacks array contains arrays with 'event' set to 'begin_page',
* 'end_page', 'begin_frame', or 'end_frame' and 'f' set to a function or
* object plus method to be called.
*
* The function 'f' must take an array as argument, which contains info
* about the event.
*
* @param array $callbacks the set of callbacks to set
*/
function set_callbacks($callbacks) {
if (is_array($callbacks)) {
$this->_callbacks = array();
foreach ($callbacks as $c) {
if (is_array($c) && isset($c['event']) && isset($c['f'])) {
$event = $c['event'];
$f = $c['f'];
if (is_callable($f) && is_string($event)) {
$this->_callbacks[$event][] = $f;
}
}
}
}
}
/**
* Get the quirks mode
*
* @return boolean true if quirks mode is active
*/
function get_quirksmode(){
return $this->_quirksmode;
}
function parse_default_view($value) {
$valid = array("XYZ", "Fit", "FitH", "FitV", "FitR", "FitB", "FitBH", "FitBV");
$options = preg_split("/\s*,\s*/", trim($value));
$default_view = array_shift($options);
if ( !in_array($default_view, $valid) ) {
return false;
}
$this->set_default_view($default_view, $options);
return true;
}
/**
* Renders the HTML to PDF
*/
function render() {
$this->save_locale();
if ( DOMPDF_LOG_OUTPUT_FILE ) {
if ( !file_exists(DOMPDF_LOG_OUTPUT_FILE) && is_writable(dirname(DOMPDF_LOG_OUTPUT_FILE)) ) {
touch(DOMPDF_LOG_OUTPUT_FILE);
}
$this->_start_time = microtime(true);
ob_start();
}
//enable_mem_profile();
$this->_process_html();
$this->_css->apply_styles($this->_tree);
// @page style rules : size, margins
$page_styles = $this->_css->get_page_styles();
$base_page_style = $page_styles["base"];
unset($page_styles["base"]);
foreach($page_styles as $_page_style) {
$_page_style->inherit($base_page_style);
}
if ( is_array($base_page_style->size) ) {
$this->set_paper(array(0, 0, $base_page_style->size[0], $base_page_style->size[1]));
}
$this->_pdf = Canvas_Factory::get_instance($this->_paper_size, $this->_paper_orientation);
Font_Metrics::init($this->_pdf);
if (DOMPDF_ENABLE_FONTSUBSETTING && $this->_pdf instanceof CPDF_Adapter) {
foreach ($this->_tree->get_frames() as $frame) {
$style = $frame->get_style();
$node = $frame->get_node();
// Handle text nodes
if ( $node->nodeName === "#text" ) {
$this->_pdf->register_string_subset($style->font_family, $node->nodeValue);
continue;
}
// Handle generated content (list items)
if ( $style->display === "list-item" ) {
$chars = List_Bullet_Renderer::get_counter_chars($style->list_style_type);
$this->_pdf->register_string_subset($style->font_family, $chars);
continue;
}
// TODO Handle other generated content (pseudo elements)
}
}
$root = null;
foreach ($this->_tree->get_frames() as $frame) {
// Set up the root frame
if ( is_null($root) ) {
$root = Frame_Factory::decorate_root( $this->_tree->get_root(), $this );
continue;
}
// Create the appropriate decorators, reflowers & positioners.
$deco = Frame_Factory::decorate_frame($frame, $this);
$deco->set_root($root);
// FIXME: handle generated content
if ( $frame->get_style()->display === "list-item" ) {
// Insert a list-bullet frame
$node = $this->_xml->createElement("bullet"); // arbitrary choice
$b_f = new Frame($node);
$parent_node = $frame->get_parent()->get_node();
if ( !$parent_node->hasAttribute("dompdf-children-count") ) {
$xpath = new DOMXPath($this->_xml);
$count = $xpath->query("li", $parent_node)->length;
$parent_node->setAttribute("dompdf-children-count", $count);
}
if ( !$parent_node->hasAttribute("dompdf-counter") ) {
$index = ($parent_node->hasAttribute("start") ? $parent_node->getAttribute("start")-1 : 0);
}
else {
$index = $parent_node->getAttribute("dompdf-counter");
}
$index++;
$parent_node->setAttribute("dompdf-counter", $index);
$node->setAttribute("dompdf-counter", $index);
$style = $this->_css->create_style();
$style->display = "-dompdf-list-bullet";
$style->inherit($frame->get_style());
$b_f->set_style($style);
$deco->prepend_child( Frame_Factory::decorate_frame($b_f, $this) );
}
}
// Add meta information
$title = $this->_xml->getElementsByTagName("title");
if ( $title->length ) {
$this->_pdf->add_info("Title", trim($title->item(0)->nodeValue));
}
$metas = $this->_xml->getElementsByTagName("meta");
$labels = array(
"author" => "Author",
"keywords" => "Keywords",
"description" => "Subject",
);
foreach($metas as $meta) {
$name = mb_strtolower($meta->getAttribute("name"));
$value = trim($meta->getAttribute("content"));
if ( isset($labels[$name]) ) {
$this->_pdf->add_info($labels[$name], $value);
continue;
}
if ( $name === "dompdf.view" && $this->parse_default_view($value) ) {
$this->_pdf->set_default_view($this->_default_view, $this->_default_view_options);
}
}
$root->set_containing_block(0, 0, $this->_pdf->get_width(), $this->_pdf->get_height());
$root->set_renderer(new Renderer($this));
// This is where the magic happens:
$root->reflow();
// Clean up cached images
Image_Cache::clear();
global $_dompdf_warnings, $_dompdf_show_warnings;
if ( $_dompdf_show_warnings ) {
echo '<b>DOMPDF Warnings</b><br><pre>';
foreach ($_dompdf_warnings as $msg)
echo $msg . "\n";
echo $this->get_canvas()->get_cpdf()->messages;
echo '</pre>';
flush();
}
$this->restore_locale();
}
/**
* Add meta information to the PDF after rendering
*/
function add_info($label, $value) {
if (!is_null($this->_pdf))
$this->_pdf->add_info($label, $value);
}
/**
* Writes the output buffer in the log file
* @return void
*/
private function write_log() {
if ( !DOMPDF_LOG_OUTPUT_FILE || !is_writable(DOMPDF_LOG_OUTPUT_FILE) ) return;
$frames = Frame::$ID_COUNTER;
$memory = DOMPDF_memory_usage();
$memory = number_format($memory/1024);
$time = number_format((microtime(true) - $this->_start_time) * 1000, 2);
$out =
"<span style='color: #000'>{$frames} frames</span>\t".
"<span style='color: #900'>{$memory} KB</span>\t".
"<span style='color: #090'>{$time} ms</span>\t".
"<span style='color: #009' title='Quirksmode'>".
($this->_quirksmode ? "<span style='color: #c00'>ON</span>" : "<span style='color: #0c0'>OFF</span>").
"</span><br />";
$out .= ob_get_clean();
file_put_contents(DOMPDF_LOG_OUTPUT_FILE, $out);
}
/**
* Streams the PDF to the client
*
* The file will open a download dialog by default. The options
* parameter controls the output. Accepted options are:
*
* 'Accept-Ranges' => 1 or 0 - if this is not set to 1, then this
* header is not included, off by default this header seems to
* have caused some problems despite the fact that it is supposed
* to solve them, so I am leaving it off by default.
*
* 'compress' = > 1 or 0 - apply content stream compression, this is
* on (1) by default
*
* 'Attachment' => 1 or 0 - if 1, force the browser to open a
* download dialog, on (1) by default
*
* @param string $filename the name of the streamed file
* @param array $options header options (see above)
*/
function stream($filename, $options = null) {
$this->save_locale();
$this->write_log();
if (!is_null($this->_pdf))
$this->_pdf->stream($filename, $options);
$this->restore_locale();
}
/**
* Returns the PDF as a string
*
* The file will open a download dialog by default. The options
* parameter controls the output. Accepted options are:
*
*
* 'compress' = > 1 or 0 - apply content stream compression, this is
* on (1) by default
*
*
* @param array $options options (see above)
* @return string
*/
function output($options = null) {
$this->save_locale();
$this->write_log();
if ( is_null($this->_pdf) )
return null;
$output = $this->_pdf->output( $options );
$this->restore_locale();
return $output;
}
/**
* Returns the underlying HTML document as a string
*
* @return string
*/
function output_html() {
return $this->_xml->saveHTML();
}
}