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<?php
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/**
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* @file
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* Generate a PDF for the print_pdf module using the wkhtmltopdf library.
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*
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* @ingroup print
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*/
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define('PRINT_PDF_WKHTMLTOPDF_OPTIONS', "--footer-font-size 7 --footer-right '[page]'");
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define('PRINT_PDF_WKHTMLTOPDF_VERSION_DEFAULT', '');
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define('PRINT_PDF_WKHTMLTOPDF_USE_INPUT_FILE_DEFAULT', FALSE);
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/**
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* Implements hook_pdf_tool_info().
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*/
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function print_pdf_wkhtmltopdf_pdf_tool_info() {
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return array(
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'name' => 'wkhtmltopdf',
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'min_version' => '0.9.6',
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'url' => 'http://wkhtmltopdf.org/downloads.html',
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'expand_css' => FALSE,
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);
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}
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/**
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* Implements hook_menu().
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*/
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function print_pdf_wkhtmltopdf_menu() {
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$items = array();
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$items['admin/config/user-interface/print/pdf/wkhtmltopdf'] = array(
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'title' => 'wkhtmltopdf',
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'description' => 'Configure the wkhtmltopdf options.',
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'page callback' => 'drupal_get_form',
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'page arguments' => array('print_pdf_wkhtmltopdf_settings'),
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'access arguments' => array('administer print'),
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'type' => MENU_LOCAL_TASK,
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'file' => 'print_pdf_wkhtmltopdf.admin.inc',
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);
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return $items;
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}
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/**
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* Implements hook_flush_caches().
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*/
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function print_pdf_wkhtmltopdf_flush_caches() {
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// Delete the cached version info during cache clear.
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variable_del('print_pdf_wkhtmltopdf_version');
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return array();
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}
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/**
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* Implements hook_pdf_tool_version().
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*/
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function print_pdf_wkhtmltopdf_pdf_tool_version($pdf_tool, $reset = TRUE) {
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$version = variable_get('print_pdf_wkhtmltopdf_version', PRINT_PDF_WKHTMLTOPDF_VERSION_DEFAULT);
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if ($reset || empty($version)) {
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// Ask the version information from the executable.
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$descriptor = array(
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0 => array('pipe', 'r'),
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1 => array('pipe', 'w'),
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2 => array('pipe', 'w'),
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);
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$cmd = '"' . realpath($pdf_tool) . '" --version';
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$process = proc_open($cmd, $descriptor, $pipes, NULL, NULL);
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if (is_resource($process)) {
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$content = stream_get_contents($pipes[1]);
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preg_match('!.*?(\d+\.\d+\.\d+).*$!m', $content, $matches);
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fclose($pipes[0]);
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fclose($pipes[1]);
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fclose($pipes[2]);
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proc_close($process);
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// Cache the results of this expensive operation.
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variable_set('print_pdf_wkhtmltopdf_version', $matches[1]);
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return ($matches[1]);
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}
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}
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else {
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// For performance sake, usually use the cached value.
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return $version;
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}
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return 'unknown';
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}
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/**
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* Implements hook_print_pdf_available_libs_alter().
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*/
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function print_pdf_wkhtmltopdf_print_pdf_available_libs_alter(&$pdf_tools) {
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module_load_include('inc', 'print', 'includes/print');
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$tools = _print_scan_libs('wkhtmltopdf', '!^wkhtmltopdf!');
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// See if there is a binary version of wkhtmltopdf available.
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if (drupal_substr(php_uname('s'), 0, 3) !== 'Win') {
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exec('export PATH="$PATH:/usr/local/bin" ; which wkhtmltopdf', $binary_output, $binary_status);
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if (count($binary_output) > 0 && $binary_status == 0) {
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$tools[] = $binary_output[0];
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}
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}
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foreach ($tools as $tool) {
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$version = print_pdf_wkhtmltopdf_pdf_tool_version($tool, TRUE);
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$pdf_tools['print_pdf_wkhtmltopdf|' . $tool] = 'wkhtmltopdf ' . $version . ' (' . $tool . ')';
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}
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}
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