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<?php
// $Id$
/**
* @file
* Generates the PDF versions of the pages
*
* This file is included by the print_pdf module and includes the
* functions that interface with the PDF generation packages.
*/
require_once(drupal_get_path('module', 'print') .'/print.pages.inc');
/**
* Generate a PDF version of the printer-friendly page
*
* @see print_controller()
* @see _print_get_template()
* @see _print_pdf_dompdf()
* @see _print_pdf_tcpdf()
*/
function print_pdf_controller() {
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global $base_url;
// Disable caching for generated PDFs, as Drupal doesn't ouput the proper headers from the cache
$GLOBALS['conf']['cache'] = FALSE;
$args = func_get_args();
$path = implode('/', $args);
$cid = isset($_GET['comment']) ? (int)$_GET['comment'] : NULL;
$print_pdf_pdf_tool = variable_get('print_pdf_pdf_tool', PRINT_PDF_PDF_TOOL_DEFAULT);
$print = print_controller($path, $cid, PRINT_PDF_FORMAT);
if ($print === FALSE) {
return;
}
// Img elements must be set to absolute
$pattern = '!<(img\s[^>]*?)>!is';
$print['content'] = preg_replace_callback($pattern, '_print_rewrite_urls', $print['content']);
$print['logo'] = preg_replace_callback($pattern, '_print_rewrite_urls', $print['logo']);
$print['footer_message'] = preg_replace_callback($pattern, '_print_rewrite_urls', $print['footer_message']);
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// And converted from private to public paths
$file_downloads = variable_get('file_downloads', FILE_DOWNLOADS_PUBLIC);
if ($file_downloads == FILE_DOWNLOADS_PRIVATE) {
$pattern = "!(<img\s[^>]*?src\s*?=\s*?['\"]?)${base_url}/(?:(?:index.php)?\?q=)?system/files(/[^>]*?>)!is";
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$replacement = '$1file://'. realpath(file_directory_path()) .'$2';
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$print['content'] = preg_replace($pattern, $replacement, $print['content']);
$print['logo'] = preg_replace($pattern, $replacement, $print['logo']);
$print['footer_message'] = preg_replace($pattern, $replacement, $print['footer_message']);
}
// Send to printer option causes problems with PDF
$print['sendtoprinter'] = '';
$node = $print['node'];
ob_start();
include_once(_print_get_template(PRINT_PDF_FORMAT, $print['type']));
$html = ob_get_contents();
ob_end_clean();
$html = drupal_final_markup($html);
// Convert the a href elements, to make sure no relative links remain
$pattern = '!<(a\s[^>]*?)>!is';
$html = preg_replace_callback($pattern, '_print_rewrite_urls', $html);
// And make anchor links relative again, to permit in-PDF navigation
$html = preg_replace("!${base_url}/". PRINTPDF_PATH ."/.*?%2523!", '#', $html);
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$pdf_filename = variable_get('print_pdf_filename', PRINT_PDF_FILENAME_DEFAULT);
if (function_exists('token_replace') && !empty($pdf_filename)) {
$pdf_filename = token_replace($pdf_filename, 'node', $node) .'.pdf';
}
else {
$pdf_filename = str_replace('/', '_', $path) .'.pdf';
}
if (function_exists('transliteration_clean_filename')) {
$pdf_filename = transliteration_clean_filename($pdf_filename, language_default('language'));
}
if (basename($print_pdf_pdf_tool) == 'dompdf_config.inc.php') {
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_print_pdf_dompdf($print, $html, $pdf_filename);
}
elseif (basename($print_pdf_pdf_tool) == 'tcpdf.php') {
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_print_pdf_tcpdf($print, $html, $pdf_filename);
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elseif (substr(basename($print_pdf_pdf_tool, '.exe'), 0, 11) == 'wkhtmltopdf') {
_print_pdf_wkhtmltopdf($print, $html, $pdf_filename);
}
else {
return drupal_not_found();
}
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$nodepath = (isset($node->path)) ? drupal_get_normal_path($node->path) : 'node/'. $path;
db_query("UPDATE {print_pdf_page_counter} SET totalcount = totalcount + 1, timestamp = %d WHERE path = '%s'", time(), $nodepath);
// If we affected 0 rows, this is the first time viewing the node.
if (!db_affected_rows()) {
// We must create a new row to store counters for the new node.
db_query("INSERT INTO {print_pdf_page_counter} (path, totalcount, timestamp) VALUES ('%s', 1, %d)", $nodepath, time());
}
}
/**
* Generate the PDF file using the dompdf library
*
* @param $print
* array containing the configured data
* @param $html
* contents of the post-processed template already with the node data
* @param $filename
* name of the PDF file to be generated
* @see print_pdf_controller()
*/
function _print_pdf_dompdf($print, $html, $filename) {
$print_pdf_pdf_tool = variable_get('print_pdf_pdf_tool', PRINT_PDF_PDF_TOOL_DEFAULT);
$print_pdf_paper_size = variable_get('print_pdf_paper_size', PRINT_PDF_PAPER_SIZE_DEFAULT);
$print_pdf_page_orientation = variable_get('print_pdf_page_orientation', PRINT_PDF_PAGE_ORIENTATION_DEFAULT);
$print_pdf_content_disposition = variable_get('print_pdf_content_disposition', PRINT_PDF_CONTENT_DISPOSITION_DEFAULT);
if (variable_get('print_pdf_autoconfig', PRINT_PDF_AUTOCONFIG_DEFAULT)) {
define("DOMPDF_ENABLE_PHP", FALSE);
define("DOMPDF_ENABLE_REMOTE", TRUE);
define("DOMPDF_TEMP_DIR", file_directory_temp());
define("DOMPDF_UNICODE_ENABLED", variable_get('print_pdf_dompdf_unicode', PRINT_PDF_DOMPDF_UNICODE_DEFAULT));
require_once($print_pdf_pdf_tool);
spl_autoload_register('DOMPDF_autoload');
// dompdf seems to have problems with something in system.css so let's not use it
$html = preg_replace('!<link.*?modules/system/system.css.*?/>!', '', $html);
$url_array = parse_url($print['url']);
$protocol = $url_array['scheme'] .'://';
$host = $url_array['host'];
$path = dirname($url_array['path']) .'/';
$dompdf = new DOMPDF();
$dompdf->set_base_path($path);
$dompdf->set_host($host);
$dompdf->set_paper(drupal_strtolower($print_pdf_paper_size), $print_pdf_page_orientation);
$dompdf->set_protocol($protocol);
// dompdf can't handle footers cleanly, so disable the following
// $html = theme('print_pdf_dompdf_footer', $html);
// If dompdf Unicode support is disabled, try to convert to ISO-8859-1 and then to HTML entities
if (!variable_get('print_pdf_dompdf_unicode', PRINT_PDF_DOMPDF_UNICODE_DEFAULT)) {
// Convert the euro sign to an HTML entity
$html = str_replace('€', '€', $html);
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// Convert from UTF-8 to ISO 8859-1 and then to HTML entities
if (function_exists('utf8_decode')) {
$html = utf8_decode($html);
}
// iconv fails silently when it encounters something that it doesn't know, so don't use it
// else if (function_exists('iconv')) {
// $html = iconv('UTF-8', 'ISO-8859-1', $html);
// }
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$html = mb_convert_encoding($html, 'ISO-8859-1', 'UTF-8');
}
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$html = recode_string('UTF-8..ISO_8859-1', $html);
}
$html = htmlspecialchars_decode(htmlentities($html, ENT_NOQUOTES, 'ISO-8859-1'), ENT_NOQUOTES);
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//must get rid of tbody (dompdf goes into recursion)
$html = preg_replace('!<tbody[^>]*?>|</tbody>!i', '', $html);
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$dompdf->render();
$dompdf->stream($filename, array('Attachment' => ($print_pdf_content_disposition == 2)));
}
/**
* Generate the PDF file using the TCPDF library
*
* @param $print
* array containing the configured data
* @param $html
* contents of the post-processed template already with the node data
* @param $filename
* name of the PDF file to be generated
* @see print_pdf_controller()
*/
function _print_pdf_tcpdf($print, $html, $filename) {
global $base_url;
$print_pdf_pdf_tool = variable_get('print_pdf_pdf_tool', PRINT_PDF_PDF_TOOL_DEFAULT);
$print_pdf_paper_size = variable_get('print_pdf_paper_size', PRINT_PDF_PAPER_SIZE_DEFAULT);
$print_pdf_page_orientation = variable_get('print_pdf_page_orientation', PRINT_PDF_PAGE_ORIENTATION_DEFAULT);
$print_pdf_content_disposition = variable_get('print_pdf_content_disposition', PRINT_PDF_CONTENT_DISPOSITION_DEFAULT);
$pdf_tool_path = realpath(dirname($print_pdf_pdf_tool));
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if (variable_get('print_pdf_autoconfig', PRINT_PDF_AUTOCONFIG_DEFAULT)) {
define('K_TCPDF_EXTERNAL_CONFIG', TRUE);
define('K_PATH_MAIN', dirname($_SERVER['SCRIPT_FILENAME']));
define('K_PATH_URL', $base_url);
define('K_PATH_FONTS', $pdf_tool_path .'/fonts/');
define('K_PATH_CACHE', $pdf_tool_path .'/cache/');
define('K_PATH_IMAGES', '');
define('K_BLANK_IMAGE', $pdf_tool_path .'/images/_blank.png');
define('K_CELL_HEIGHT_RATIO', 1.25);
define('K_SMALL_RATIO', 2/3);
}
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// Decode HTML entities in image filenames
$pattern = "!<img\s[^>]*?src\s*?=\s*?['\"]?{$base_url}[^>]*?>!is";
$html = preg_replace_callback($pattern, create_function('$matches', 'return html_entity_decode($matches[0], ENT_QUOTES);'), $html);
$pattern = "!(<img\s[^>]*?src\s*?=\s*?['\"]?{$base_url}[^>]*?)(?:%3F|\?)[\w=&]+([^>]*?>)!is";
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$html = preg_replace($pattern, '$1$2', $html);
require_once($print_pdf_pdf_tool);
if (strpos(PDF_PRODUCER, 'PHP4') === FALSE) {
require_once(drupal_get_path('module', 'print_pdf') .'/print_pdf.class.inc');
}
else {
require_once(drupal_get_path('module', 'print_pdf') .'/print_pdf.class_php4.inc');
}
$font = Array(
check_plain(variable_get('print_pdf_font_family', PRINT_PDF_FONT_FAMILY_DEFAULT)),
check_plain(variable_get('print_pdf_font_size', PRINT_PDF_FONT_SIZE_DEFAULT)),
);
$orientation = drupal_strtoupper($print_pdf_page_orientation[0]);
// create new PDF document
$pdf = new PrintTCPDF($orientation , 'mm', $print_pdf_paper_size, TRUE);
// set document information
$pdf->SetAuthor(strip_tags($print['submitted']));
$pdf->SetCreator(variable_get('site_name', 'Drupal'));
$pdf->SetTitle(html_entity_decode($print['title'], ENT_QUOTES, 'UTF-8'));
$keys = implode(' ', explode("\n", trim(strip_tags($print['taxonomy']))));
$pdf->SetKeywords($keys);
$pdf->setPDFVersion('1.6');
$pdf = theme('print_pdf_tcpdf_header', $pdf, $html, $font);
$pdf = theme('print_pdf_tcpdf_footer', $pdf, $html, $font);
$pdf = theme('print_pdf_tcpdf_page', $pdf);
//initialize document
$pdf->AliasNbPages();
// add a page
$pdf->AddPage();
$pdf = theme('print_pdf_tcpdf_content', $pdf, $html, $font);
// reset pointer to the last page
$pdf->lastPage();
// try to recover from any warning/error
ob_clean();
//Close and output PDF document
$output_dest = ($print_pdf_content_disposition == 2) ? 'D' : 'I';
$pdf->Output($filename, $output_dest);
}
/**
* Generate the PDF file using wkhtmltopdf
*
* @param $print
* array containing the configured data
* @param $html
* contents of the post-processed template already with the node data
* @param $filename
* name of the PDF file to be generated
* @see print_pdf_controller()
*/
function _print_pdf_wkhtmltopdf($print, $html, $filename) {
$print_pdf_pdf_tool = variable_get('print_pdf_pdf_tool', PRINT_PDF_PDF_TOOL_DEFAULT);
$print_pdf_paper_size = drupal_strtolower(variable_get('print_pdf_paper_size', PRINT_PDF_PAPER_SIZE_DEFAULT));
$print_pdf_page_orientation = variable_get('print_pdf_page_orientation', PRINT_PDF_PAGE_ORIENTATION_DEFAULT);
$print_pdf_content_disposition = variable_get('print_pdf_content_disposition', PRINT_PDF_CONTENT_DISPOSITION_DEFAULT);
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$print_pdf_wkhtmltopdf_options = variable_get('print_pdf_wkhtmltopdf_options', PRINT_PDF_WKHTMLTOPDF_OPTIONS);
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$dpi = 96;
if (function_exists('token_replace') && !empty($print_pdf_wkhtmltopdf_options)) {
$print_pdf_wkhtmltopdf_options = token_replace($print_pdf_wkhtmltopdf_options, 'node', $print['node']);
}
$descriptor = array(0 => array('pipe', 'r'), 1 => array('pipe', 'w'), 2 => array('pipe', 'w'));
$cmd = realpath($print_pdf_pdf_tool) ." --page-size $print_pdf_paper_size --orientation $print_pdf_page_orientation --dpi $dpi $print_pdf_wkhtmltopdf_options - -";
$process = proc_open($cmd, $descriptor, $pipes, NULL, NULL);
if (is_resource($process)) {
fwrite($pipes[0], $html);
fclose($pipes[0]);
$pdf = stream_get_contents($pipes[1]);
fclose($pipes[1]);
stream_set_blocking($pipes[2], 0);
$error = stream_get_contents($pipes[2]);
if (!empty($error)) {
watchdog('print_pdf', 'wkhtmltopdf: '. $error);
$retval = proc_terminate($process);
if (!empty($pdf)) {
if (headers_sent()) {
die("Unable to stream pdf: headers already sent");
}
header("Cache-Control: private");
header("Content-Type: application/pdf");
$attachment = ($print_pdf_content_disposition == 2) ? "attachment" : "inline";
header("Content-Disposition: $attachment; filename=\"$filename\"");
echo $pdf;
flush();
}
else {
drupal_goto($print['url']);
exit;
}
/**
* Format the dompdf footer contents
*
* @param $html
* contents of the body of the HTML from the original node
* @see theme_print_pdf_tcpdf_footer()
*/
function theme_print_pdf_dompdf_footer($html) {
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preg_match('!<div class="print-footer">(.*?)</div>!si', $html, $tpl_footer);
$html = str_replace($tpl_footer[0], '', $html);
$text = '<script type="text/php">
if (isset($pdf)) {
$font = Font_Metrics::get_font("verdana");;
$size = 10;
$color = array(0,0,0);
$text_height = Font_Metrics::get_font_height($font, $size);
$w = $pdf->get_width();
$h = $pdf->get_height();
$footer = $pdf->open_object();
// Draw a line along the bottom
$y = $h - 25;
$pdf->line(15, $y, $w - 15, $y, $color, 1);
$y += $text_height / 2;
$pdf->page_text(15, $y, \''. addslashes(strip_tags($tpl_footer[1])) .'\', $font, $size, $color);
$pdf->close_object();
$pdf->add_object($footer, "all");
// Center the text
$width = Font_Metrics::get_text_width("Page 1 of 2", $font, $size);
$pagenumtxt = t("Page !n of !total", array("!n" => "{PAGE_NUM}", "!total" => "{PAGE_COUNT}"));
$pdf->page_text($w - 15 - $width, $y, $pagenumtxt, $font, $size, $color);
}
</script>';
return str_replace("<body>", "<body>" . $text, $html);
}
/**
* Format the TCPDF header
*
* @param $pdf
* current TCPDF object
* @param $html
* contents of the body of the HTML from the original node
* @param $font
* array with the font definition (font name, styles and size)
* @see theme_print_pdf_tcpdf_header()
*/
function theme_print_pdf_tcpdf_header($pdf, $html, $font) {
preg_match('!<div class="print-logo">(.*?)</div>!si', $html, $tpl_logo);
preg_match('!<h1 class="print-title">(.*?)</h1>!si', $html, $tpl_title);
preg_match('!<div class="print-site_name">(.*?)</div>!si', $html, $tpl_site_name);
$ratio = 0;
$logo = '';
$logo_ret = preg_match('!src\s*=\s*(\'.*?\'|".*?"|[^\s]*)!i', $tpl_logo[1], $matches);
if ($logo_ret) {
$logo = trim($matches[1], '\'"');
$size = getimagesize($logo);
$ratio = $size ? ($size[0] / $size[1]) : 0;
}
// set header font
$pdf->setHeaderFont($font);
// set header margin
$pdf->SetHeaderMargin(5);
// set header data
$pdf->SetHeaderData($logo, 10 * $ratio, html_entity_decode($tpl_title[1], ENT_QUOTES, 'UTF-8'), strip_tags($tpl_site_name[1]));
return $pdf;
}
/**
* Format the TCPDF page settings (margins, etc)
*
* @param $pdf
* current TCPDF object
* @see theme_print_pdf_tcpdf_page()
*/
function theme_print_pdf_tcpdf_page($pdf) {
// set margins
$pdf->SetMargins(15, 20, 15);
// set auto page breaks
$pdf->SetAutoPageBreak(TRUE, 15);
// set image scale factor
sscanf(PDF_PRODUCER, "TCPDF %d.%d.%d", $major, $minor, $build);
$imagescale = (($major >= 4) && ($minor >= 6) && ($build >= 2)) ? 1 : 4;
$pdf->setImageScale($imagescale);
// set image compression quality
$pdf->setJPEGQuality(100);
return $pdf;
}
/**
* Format the TCPDF page content
*
* @param $pdf
* current TCPDF object
* @param $html
* contents of the body of the HTML from the original node
* @param $font
* array with the font definition (font name, styles and size)
* @see theme_print_pdf_tcpdf_content()
*/
function theme_print_pdf_tcpdf_content($pdf, $html, $font) {
// set content font
$pdf->setFont($font[0], $font[1], $font[2]);
preg_match('!<body.*?>(.*)</body>!sim', $html, $matches);
$pattern = '!(?:<div class="print-(?:logo|site_name|breadcrumb|footer)">.*?</div>|<hr class="print-hr" />)!si';
$matches[1] = preg_replace($pattern, '', $matches[1]);
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// Make CCK fields look better
$matches[1] = preg_replace('!(<div class="field.*?>)\s*!sm', '$1', $matches[1]);
$matches[1] = preg_replace('!(<div class="field.*?>.*?</div>)\s*!sm', '$1', $matches[1]);
$matches[1] = preg_replace('!<div( class="field-label.*?>.*?)</div>!sm', '<strong$1</strong>', $matches[1]);
// Since TCPDF's writeHTML is so bad with <p>, do everything possible to make it look nice
$matches[1] = preg_replace('!<(?:p(|\s+.*?)/?|/p)>!i', '<br$1 />', $matches[1]);
$matches[1] = str_replace(array('<div', 'div>'), array('<span', 'span><br />'), $matches[1]);
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do {
$prev = $matches[1];
$matches[1] = preg_replace('!(</span>)<br />(\s*?</span><br />)!s', '$1$2', $matches[1]);
} while ($prev != $matches[1]);
return $pdf;
}
/**
* Format the TCPDF footer contents
*
* @param $pdf
* current TCPDF object
* @param $html
* contents of the body of the HTML from the original node
* @param $font
* array with the font definition (font name, styles and size)
* @see theme_print_pdf_tcpdf_footer()
*/
function theme_print_pdf_tcpdf_footer($pdf, $html, $font) {
preg_match('!<div class="print-footer">(.*?)</div>!si', $html, $tpl_footer);
$footer = trim(preg_replace('!</?div[^>]*?>!i', '', $tpl_footer[1]));
// set footer font
$font[2] *= 0.8;
$pdf->setFooterFont($font);
// set footer margin
$pdf->SetFooterMargin(10);
// set footer data
$pdf->SetFooterData($footer);
return $pdf;
}
/**
* Format the TCPDF footer layout
*
* @param $pdf
* current TCPDF object
* @see theme_print_pdf_tcpdf_footer2()
*/
function theme_print_pdf_tcpdf_footer2($pdf) {
//Position at 1.5 cm from bottom
$pdf->writeHTMLCell(0, 15, 15, -10, $pdf->footer, 0, 0, 0, TRUE, '');
$ormargins = $pdf->getOriginalMargins();
$pagenumtxt = t('Page !n of !total', array('!n' => $pdf->PageNo(), '!total' => $pdf->getAliasNbPages()));
//Print page number
if ($pdf->getRTL()) {
$pdf->SetX($ormargins['right']);
$pdf->Cell(0, 10, $pagenumtxt, 'T', 0, 'L');
}
else {
$pdf->SetX($ormargins['left']);
$pdf->Cell(0, 10, $pagenumtxt, 'T', 0, 'R');
}
return $pdf;
}