Files
conservatorio-tomadini/administrator/components/com_tabulizer/models/datasources.php
2024-12-17 17:34:10 +01:00

688 lines
30 KiB
PHP

<?php
/**
* @version 6.2.6 tabulizer $
* @package tabulizer
* @copyright Copyright © 2011 - All rights reserved.
* @license GNU/GPL
* @author Dimitrios Mourloukos
* @author mail info@alterora.gr
* @website www.tabulizer.com
*
*/
// no direct access
defined('_JEXEC') or die('Restricted access');
jimport( 'joomla.application.component.model' );
class tabulizerModelDatasources extends JModelLegacy {
var $data_sources = null;
var $data_source = null;
var $data_files = null;
var $limit = null;
var $limitstart = null;
var $total_count = null;
var $publishing_preferences = null;
function __construct(){
parent::__construct();
}
function getPagination() {
$pagination = null;
if (!empty($this->limit) && !empty($this->total_count)) {
if ($this->total_count > $this->limit) {
jimport('joomla.html.pagination');
$pagination = new JPagination($this->total_count, $this->limitstart, $this->limit );
}
}
return $pagination;
}
function getReturnURLs(&$urls) {
$jinput = JFactory::getApplication()->input;
$option = $jinput->getCmd('option');
$urls = array();
$urls['data_sources'] = $jinput->getString('data_sources_return_url',str_replace('&amp;','&',JRoute::_('index.php?option='.$option.'&task=viewDataSources&limit='.$this->limit.'&limitstart='.$this->limitstart)));
$url = str_replace('&amp;','&',JRoute::_('index.php?option='.$option.'&task=viewRulesetArchives'));
$urls['archives'] = $url;
}
function loadDataSources($limit, $limitstart, &$error_msg) {
$jinput = JFactory::getApplication()->input;
$option = $jinput->getCmd('option');
$db = JFactory::getDbo();
$this->limit = $limit;
$this->limitstart = $limitstart;
if (!empty($limit)) {
$query = 'SELECT id, tag, title, source_type, source_params, cache_type, cache_time FROM #__tabulizer_data_source LIMIT '.intval($limitstart).', '.intval($limit);
} else {
$query = 'SELECT id, tag, title, source_type, source_params, cache_type, cache_time FROM #__tabulizer_data_source';
}
$db->setQuery($query);
$rows = $db->loadObjectList();
if (empty($rows)) {
return false;
} else {
$this->data_sources = $rows;
$query = 'SELECT count(*) FROM #__tabulizer_data_source WHERE 1';
$db->setQuery($query);
$this->total_count = $db->loadResult();
return true;
}
}
function loadPublishingPreferences(&$error_msg) {
$jinput = JFactory::getApplication()->input;
$option = $jinput->getCmd('option');
$db = JFactory::getDbo();
if (!empty($this->data_source)) {
$tag = $this->data_source->tag;
} else {
// this should never happen
$error_msg = 'Data source is not loaded!';
return false;
}
$query = 'SELECT * FROM #__tabulizer_data_source_publishing_preferences WHERE tag = ' . $db->quote($tag);
$db->setQuery($query);
$row = $db->loadObject();
$this->publishing_preferences = $row;
return true;
}
function getPublishingPreferences() {
return $this->publishing_preferences;
}
function savePublishingPreferences($tag, &$error_msg) {
$jinput = JFactory::getApplication()->input;
$option = $jinput->getCmd('option');
$db = JFactory::getDbo();
$query = 'SELECT * FROM #__tabulizer_data_source_publishing_preferences WHERE tag = ' . $db->quote($tag);
$db->setQuery($query);
$row = $db->loadObject();
$status = $jinput->getInt('ds_status',0);
$mode = $jinput->getString('ds_mode',null);
$keyphrases = $jinput->getString('ds_keyphrases',null);
if (!empty($row)) {
$query = 'UPDATE #__tabulizer_data_source_publishing_preferences SET `status`='.$db->quote($status).', `mode`='.$db->quote($mode).', `keyphrases`='.$db->quote($keyphrases).' WHERE tag = ' . $db->quote($tag);
} else {
$query = 'INSERT INTO #__tabulizer_data_source_publishing_preferences (`tag`,`status`,`mode`,`keyphrases`) VALUES ('.$db->quote($tag).','.$db->quote($status).','.$db->quote($mode).','.$db->quote($keyphrases).')';
}
return TabulizerDatabase::executeQuery($query, $error_msg);
}
function getDataSourceRequest($source_type, $field_prefix, &$error_msg) {
TabulizerPath::requireLib('data_source','common');
return TabulizerDataSource::getRequestedParams($source_type, $field_prefix, $error_msg);
}
function getDataSources() {
return $this->data_sources;
}
function loadDataSource($id = null, $tag = null) {
$jinput = JFactory::getApplication()->input;
$option = $jinput->getCmd('option');
$db = JFactory::getDbo();
if (isset($tag)) {
$query = 'SELECT id, tag, title, source_type, source_params, cache_type, cache_time FROM #__tabulizer_data_source WHERE tag = '. $db->quote($tag);
} else {
$query = 'SELECT id, tag, title, source_type, source_params, cache_type, cache_time FROM #__tabulizer_data_source WHERE id = '. $db->quote($id);
}
$db->setQuery($query);
$result = $db->loadObject();
if (!empty($result)) {
$this->data_source = $result;
return $result;
} else {
return false;
}
}
function getDataSource() {
return $this->data_source;
}
function importDataSource($data_source, &$errors) {
TabulizerPath::requireLib('data_source','common');
// validate type
$options = TabulizerDataSource::getSourceTypeLabel();
if (!array_key_exists($data_source['source_type'],$options)) {
$errors[] = sprintf(JText::_('COM_TABULIZER_DATA_SOURCE_INVALID_TYPE'), $data_source['source_type']);
return false;
}
// validate cache
if ($data_source['cache_type'] != TABULIZER_DATA_SOURCE_CACHE_OFF) {
if (empty($data_source['cache_time'])) $data_source['cache_type'] = TABULIZER_DATA_SOURCE_CACHE_OFF;
else $data_source['cache_type'] = TABULIZER_DATA_SOURCE_CACHE_ON;
}
if (TabulizerDataSource::validateDataSourceParams($data_source['params'], $error_msg)) {
TabulizerDataSource::encodeParams($data_source['source_type'], $data_source['params'], $source_params_str, $error_msg);
$data_source['source_params'] = $source_params_str;
return $this->saveDataSource($data_source, $errors);
} else {
$errors[] = $error_msg;
return false;
}
}
function importDataSourceArchive($filename, &$errors) {
$contents = file_get_contents($filename);
if (empty($contents)) return false;
$p = xml_parser_create();
xml_parse_into_struct($p, $contents, $vals, $index);
xml_parser_free($p);
$data_source_open = false;
$data_source = array();
foreach ($vals as $node) {
switch ($node['tag']) {
case 'DATASOURCE':
if ($node['type'] == 'open') {
$data_source = array();
if (!empty($node['attributes']['TITLE'])) {
$data_source['title'] = trim($node['attributes']['TITLE']);
}
if (!empty($node['attributes']['TAG'])) {
$data_source['tag'] = trim($node['attributes']['TAG']);
} else {
$data_source['tag'] = TabulizerString::generateRandomString(24);
}
if (!empty($node['attributes']['SOURCE_TYPE'])) {
$data_source['source_type'] = strtolower(trim($node['attributes']['SOURCE_TYPE']));
}
if (!empty($node['attributes']['CACHE_TYPE'])) {
$data_source['cache_type'] = intval(trim($node['attributes']['CACHE_TYPE']));
} else {
$data_source['cache_type'] = TABULIZER_DATA_SOURCE_DEFAULT_CACHE_TYPE;
}
if (!empty($node['attributes']['CACHE_TIME'])) {
$data_source['cache_time'] = intval(trim($node['attributes']['CACHE_TIME']));
} else {
$data_source['cache_time'] = TABULIZER_DATA_SOURCE_DEFAULT_CACHE_TIME;
}
if (isset($data_source['title']) && isset($data_source['source_type'])) {
$data_source['params'] = array();
$data_source_open = true;
} else {
$data_source_open = false;
}
} else if ($node['type'] == 'close') {
if ($data_source_open) {
$this->importDataSource($data_source, $errors);
$data_source_open = false;
}
}
break;
case 'PARAM':
if ($data_source_open) {
if ($node['type'] == 'complete') {
$attributes = $node['attributes'];
$attribute_key = empty($attributes['KEY'])?null:strtolower(trim($attributes['KEY']));
$attribute_value = isset($attributes['VALUE'])?trim($attributes['VALUE']):null;
if (isset($attribute_key) && (isset($attribute_value))) {
$data_source['params'][$attribute_key] = $attribute_value;
}
}
}
break;
}
}
if (empty($errors)) return true;
else return false;
}
function verifyCompatibility($data_source, &$error_msg) {
TabulizerPath::requireLib('data_source','common');
if (!TabulizerDataSource::decodeParams($data_source['source_type'],$data_source['source_params'],$source_params,$error_msg)) {
// this should never happen
$error_msg = 'Invalid data source params at verifyCompatibility';
return false;
}
$server_side = false;
if (!empty($source_params['server_side'])) $server_side = true;
if ($server_side) {
TabulizerPath::requireLib('ruleset','admin');
$loader = new Ruleset();
$ruleset = $loader->getRuleset($source_params['ruleset_name'],$source_params['ruleset_archive']);
if (empty($ruleset)) {
// this should never happen
$error_msg = 'Invalid ruleset for data source at verifyCompatibility';
return false;
}
$split_rule = false;
$pagination_rule = false;
if (!empty($ruleset['rules'])) {
foreach ($ruleset['rules'] as $rule) {
if (!empty($rule['split'])) $split_rule = true;
if (!empty($rule['pagination'])) $pagination_rule = true;
}
}
if ($split_rule) {
$error_msg = JText::_('COM_TABULIZER_INVALID_DATA_SOURCE_SERVER_SIDE_INCOMPATIBILITY_SPLIT');
return false;
}
if (!$pagination_rule) {
$error_msg = JText::_('COM_TABULIZER_INVALID_DATA_SOURCE_SERVER_SIDE_INCOMPATIBILITY_PAGINATION');
return false;
}
}
return true;
}
function saveDataSource($data_source, &$error_msg) {
$db = JFactory::getDbo();
$new_entry = (empty($data_source['id']))?true:false;
$cache_type = intval($data_source['cache_type']);
if ($cache_type == TABULIZER_DATA_SOURCE_CACHE_OFF) {
$cache_time = 'NULL';
} else {
$cache_time = intval($data_source['cache_time']);
if (empty($cache_time)) $cache_time = TABULIZER_DATA_SOURCE_DEFAULT_CACHE_TIME;
}
// compatibilty issues such as: server side + split, or server side and lack of pagination
if (!$this->verifyCompatibility($data_source,$error_msg)) {
return false;
}
if ($new_entry) {
$query = 'INSERT INTO #__tabulizer_data_source (`tag`, `title`, `source_type`, `source_params`, `cache_type`, `cache_time`) VALUES ('.$db->quote($data_source['tag']).','.$db->quote($data_source['title']).','.$db->quote($data_source['source_type']).','.$db->quote($data_source['source_params']).','.$cache_type.','.$cache_time.')';
} else {
$query = 'UPDATE #__tabulizer_data_source SET `title`='.$db->quote($data_source['title']).', `source_type`='.$db->quote($data_source['source_type']).', `source_params`='.$db->quote($data_source['source_params']). ', `cache_type`='.$cache_type.', `cache_time`='.$cache_time.' WHERE `id` = '.intval($data_source['id']);
// remove cache contents
$data_source_tags = array($data_source['tag']);
$this->deleteDataSourceCache($data_source_tags);
}
return TabulizerDatabase::executeQuery($query, $error_msg);
}
function clearDataSourceCache($id, &$error_msg) {
$db = JFactory::getDbo();
$query = 'SELECT tag FROM #__tabulizer_data_source WHERE id = '. intval($id);
$db->setQuery($query);
$data_source_tag = $db->loadResult();
if (!empty($data_source_tag)) {
$this->deleteDataSourceImages($id);
$data_source_tags = array($data_source_tag);
return $this->deleteDataSourceCache($data_source_tags);
} else return false;
}
function deleteDataSource($ids, &$error_msg) {
$db = JFactory::getDbo();
$query = 'SELECT tag FROM #__tabulizer_data_source WHERE id IN ('.implode(',',$ids).')';
$db->setQuery($query);
$data_source_tags = $db->loadColumn();
if ($data_source_tags) {
$this->deleteDataSourceCache($data_source_tags);
$query = 'DELETE FROM #__tabulizer_data_source WHERE id IN ('.implode(',',$ids).')';
return TabulizerDatabase::executeQuery($query, $error_msg);
}
}
function deleteDataSourceCache($data_source_tags) {
$db = JFactory::getDbo();
$tags = array();
foreach ($data_source_tags as $tag) {
$tags[] = $db->quote($tag);
}
$query = 'SELECT cache_id FROM #__tabulizer_data_source_cache_key_map WHERE tag IN ('.implode(',',$tags).')';
$db->setQuery($query);
$cache_ids = $db->loadColumn();
if (!empty($cache_ids)) {
$query = 'DELETE FROM #__tabulizer_data_source_cache WHERE cache_id IN ('.implode(',',$cache_ids).')';
TabulizerDatabase::executeQuery($query, $error_msg);
$query = 'DELETE FROM #__tabulizer_data_source_cache_properties WHERE cache_id IN ('.implode(',',$cache_ids).')';
TabulizerDatabase::executeQuery($query, $error_msg);
}
$query = 'DELETE FROM #__tabulizer_data_source_cache_key_map WHERE tag IN ('.implode(',',$tags).')';
return TabulizerDatabase::executeQuery($query, $error_msg);
}
function deleteDataSourceImages($data_source_id) {
$data_source = $this->loadDataSource($data_source_id);
if ($data_source->source_type == 'excel') {
TabulizerPath::requireLib('data_source','common');
if (!TabulizerDataSource::decodeParams($data_source->source_type,$data_source->source_params,$params,$error_msg)) {
// this should never happen
$error_msg = 'Invalid data source params at verifyCompatibility';
return false;
}
$read_images = isset($params['read_images'])?$params['read_images']:false;
if (!$read_images) return true; // nothing to do
else {
$image_tag = $data_source->tag;
$image_prefix = 'tbl_' . $image_tag;
$output_image_dir = TabulizerPath::getDirPath('sheet_images');
// traverse image directory for matches
$image_files = scandir($output_image_dir);
if (!empty($image_files)) {
foreach ($image_files as $image_file) {
if (strpos($image_file, $image_prefix)!==false) {
$image_filepath = $output_image_dir . '/'. $image_file;
@unlink($image_filepath);
}
}
}
}
}
}
function addMergingTreeTag($nodes, &$merging_tree) {
if (is_array($nodes)) {
foreach ($nodes as $node) {
if (is_array($node)) {
$this->addMergingTreeTag($node, $merging_tree);
} else {
$merging_tree[] = $node;
}
}
}
}
function exportDataSource($data_source, &$ds_merging_tree, &$ds_associated_files, &$ds_file_contents, &$error_msg) {
if (!TabulizerDataSource::decodeParams($data_source->source_type, $data_source->source_params, $params, $errors)) {
$error_msg = sprintf(JText::_('COM_TABULIZER_UNABLE_TO_DECODE_DATA_SROUCE_PARAMS'),$data_source->tag);
return false;
}
$ds_file_contents .= ' <datasource';
$ds_file_contents .= ' title="'.TabulizerString::makeXMLSafe($data_source->title).'"';
if (!empty($data_source->tag)) $ds_file_contents .= ' tag="'.TabulizerString::makeXMLSafe($data_source->tag).'"';
$ds_file_contents .= ' source_type="'.TabulizerString::makeXMLSafe($data_source->source_type).'"';
$ds_file_contents .= ' cache_type="'.TabulizerString::makeXMLSafe($data_source->cache_type).'"';
if (!empty($data_source->cache_type)) {
if ($data_source->cache_type != TABULIZER_DATA_SOURCE_CACHE_OFF) {
$ds_file_contents .= ' cache_time="' . TabulizerString::makeXMLSafe($data_source->cache_time) . '"';
}
}
$ds_file_contents .= '>'."\n";
foreach ($params as $key => $value) {
switch ($key) {
case 'ruleset_archive':
$associated_files = TabulizerRulesetAssociation::loadArchiveFiles($value);
if ($associated_files) {
$ds_associated_files = TabulizerRulesetAssociation::mergeAssociations($ds_associated_files,$associated_files);
}
break;
case 'filepath':
$associated_files = TabulizerRulesetAssociation::loadDataFile($value, $filename);
if ($associated_files) {
$ds_associated_files = TabulizerRulesetAssociation::mergeAssociations($ds_associated_files,$associated_files);
$value = $filename;
}
break;
case 'merging_tree':
TabulizerPath::requireLib('merger_extraction','common');
$extractor = new MergerExtraction();
$nodes = $extractor->getMergingTree($value);
if (!empty($nodes)) {
$ds_merging_tree = array();
$this->addMergingTreeTag($nodes, $ds_merging_tree);
}
break;
}
$ds_file_contents .= ' <param key="'.$key.'" value="'.TabulizerString::makeXMLSafe($value).'" />'."\n";
}
$ds_file_contents .= ' </datasource>'."\n";
return true;
}
function exportDataSources($ids, &$error_msg) {
TabulizerPath::requireLib('data_source','common');
$db = JFactory::getDbo();
$query = 'SELECT * FROM #__tabulizer_data_source WHERE id IN ('.implode(',',$ids).')';
$db->setQuery($query);
$data_sources = $db->loadObjectList();
if (empty($data_sources)) {
$error_msg = JText::_('COM_TABULIZER_UNABLE_TO_LOAD_SELECTED_DATA_SOURCES');
return false;
}
$ds_associated_files = array();
$ds_file_contents = '<?xml version="1.0" encoding="utf-8"?>'."\n".'<datasources>' . "\n";
$data_source = array_shift($data_sources);
while ($data_source) {
$ds_merging_tree = array();
if (!$this->exportDataSource($data_source, $ds_merging_tree, $ds_associated_files, $ds_file_contents, $error_msg)) return false;
if (!empty($ds_merging_tree)) {
$tags = array();
foreach ($ds_merging_tree as $tag) $tags[] = $db->quote($tag);
$query = 'SELECT * FROM #__tabulizer_data_source WHERE tag IN ('.implode(',',$tags).')';
$db->setQuery($query);
$data_sources_entries = $db->loadObjectList();
if (empty($data_sources_entries)) {
foreach ($data_sources_entries as $data_source) {
array_push($data_sources, $data_source);
}
}
}
$data_source = array_shift($data_sources);
}
$ds_file_contents .= '</datasources>';
$archive_dir = TabulizerPath::getDirBase('temp');
$archive_filename = $archive_dir .DIRECTORY_SEPARATOR. 'ds_download.zip';
$ds_filename = 'ds_' . TabulizerString::generateRandomString() . '.xml';
$ds_filepath = $archive_dir .DIRECTORY_SEPARATOR. $ds_filename;
if (file_put_contents($ds_filepath, $ds_file_contents)) {
$associated_files = array('datasources'=>array($ds_filename=>$ds_filepath));
$ds_associated_files = TabulizerRulesetAssociation::mergeAssociations($ds_associated_files,$associated_files);
} else {
$error_msg = sprintf(JText::_('COM_TABULIZER_DATA_SOURCE_UNABLE_TO_WRITE_TEMP_EXPORT_FILE'),$ds_filepath);
return false;
}
$zip = new ZipArchive;
$return_code = $zip->open($archive_filename,ZIPARCHIVE::CREATE | ZIPARCHIVE::OVERWRITE);
if ($return_code === TRUE) {
foreach ($ds_associated_files as $zipdir => $files) {
if (empty($files)) continue;
$zip->addEmptyDir($zipdir);
foreach ($files as $filename => $filepath) {
$zip->addFile($filepath, $zipdir .DIRECTORY_SEPARATOR. $filename);
}
}
$zip->close();
} else {
$error_desc = TabulizerUtils::getZipArchiveErrorDescription($return_code);
$error_msg = sprintf(JText::_('COM_TABULIZER_DATA_FILE_ZIP_LIBRARY_MISSING'),$error_desc);
return false;
}
// finally output the temp zip file
header('Pragma: public');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Cache-Control: private', false); // required for certain browsers
header('Content-Type: application/zip');
header('Content-Disposition: attachment; filename="'. basename($archive_filename) . '";');
header('Content-Transfer-Encoding: binary');
header('Content-Length: ' . filesize($archive_filename));
ob_clean();
flush();
readfile($archive_filename);
// remove temporary files
@unlink($archive_filename);
@unlink($ds_filepath);
exit;
}
function loadDataFiles($limit = 0, $limitstart = 0) {
TabulizerPath::requireLib('data_source','common');
$data_path = TabulizerPath::getDirPath('data');
$file2ds = array();
$this->loadDataSources(0,0,$error_msg);
if (!empty($this->data_sources)) {
foreach ($this->data_sources as $data_source) {
$source_type = $data_source->source_type;
$applicable_source_types = explode(',','csv,excel,html,rss');
if (in_array($source_type,$applicable_source_types)) {
$title = $data_source->title;
if (TabulizerDataSource::decodeParams($source_type,$data_source->source_params,$params,$error_msg)) {
$id = $data_source->id;
$return_url = '&data_sources_return_url='.urlencode(JFilterOutput::ampReplace ('index.php?option=com_tabulizer&task=viewDataFiles'));
$link = '<a href="'.JFilterOutput::ampReplace ('index.php?option=com_tabulizer&task=editDataSource&ds_id='.$id.'&cid[]='.$id.$return_url).'">'.$title.'</a>';
if (isset($params['filepath'])) {
if (file_exists($data_path .DIRECTORY_SEPARATOR. $params['filepath'])) {
if (!isset($file2ds[$params['filepath']])) $file2ds[$params['filepath']] = array();
$file2ds[$params['filepath']][] = $link;
}
}
}
}
}
}
$data_files = array();
$files = scandir($data_path);
if (!empty($files)) {
$allowed_extensions = explode(',',strtolower(ALLOWED_FILE_TYPES_FOR_DATA_IMPORTATION));
foreach ($files as $file) {
$filepath = $data_path .DIRECTORY_SEPARATOR. $file;
if (is_file($filepath)) {
if (($file!='.')&&($file!='..')) {
$parts = pathinfo($filepath);
if (isset($parts['extension'])) {
$extension = strtolower($parts['extension']);
if (in_array($extension,$allowed_extensions)) {
$linked_data_sources = '';
if (isset($file2ds[$file])) $linked_data_sources = implode("<br/>\n", $file2ds[$file]);
$data_files[$file] = array('modified'=>date("Y-m-d H:i:s.", filemtime($filepath)), 'linked_data_sources'=>$linked_data_sources);
}
}
}
}
}
}
$this->data_files = $data_files;
}
function getDataFiles() {
return $this->data_files;
}
function deleteDataFile($filenames, &$error_msg) {
$this->loadDataFiles();
$data_path = realpath(TabulizerPath::getDirPath('data'));
foreach ($filenames as $filename) {
if (isset($this->data_files[$filename])) {
$filepath = realpath($data_path .DIRECTORY_SEPARATOR. $filename);
$base_path = pathinfo($filepath, PATHINFO_DIRNAME);
if ($data_path != $base_path) {
$error_msg = 'Invalid base path - please report this.';
return false;
} else
if (file_exists($filepath)) {
@unlink($filepath);
}
} else {
$error_msg = 'Invalid file selection:'.$filename. ' - make sure it exists in the data files directory and it has the proper extension.';
return false;
}
}
return true;
}
function outputDataFiles($filenames, &$error_msg) {
$this->loadDataFiles();
$data_path = realpath(TabulizerPath::getDirPath('data'));
$archive_dir = $data_path;
$archive_filename = $archive_dir .DIRECTORY_SEPARATOR. 'download.zip';
$zip = new ZipArchive;
$return_code = $zip->open($archive_filename,ZIPARCHIVE::CREATE | ZIPARCHIVE::OVERWRITE);
if ($return_code === TRUE) {
foreach ($filenames as $filename) {
if (isset($this->data_files[$filename])) {
$filepath = realpath($data_path .DIRECTORY_SEPARATOR. $filename);
$base_path = pathinfo($filepath, PATHINFO_DIRNAME);
if ($data_path != $base_path) {
$error_msg = "Invalid base path $base_path for zip entry.";
return false;
} else if (file_exists($filepath)) {
$zip->addFile($filepath, $filename);
} else {
$error_msg = "File not found: $filepath";
return false;
}
} else {
$error_msg = 'Invalid file selection:'.$filename. ' - make sure it exists in the data files directory and it has the proper extension.';
return false;
}
}
$zip->close();
} else {
$error_desc = TabulizerUtils::getZipArchiveErrorDescription($return_code);
$error_msg = sprintf(JText::_('COM_TABULIZER_DATA_FILE_ZIP_LIBRARY_MISSING'),$error_desc);
return false;
}
// finally output the temp zip file
header('Pragma: public');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Cache-Control: private', false); // required for certain browsers
header('Content-Type: application/zip');
header('Content-Disposition: attachment; filename="'. basename($archive_filename) . '";');
header('Content-Transfer-Encoding: binary');
header('Content-Length: ' . filesize($archive_filename));
ob_clean();
flush();
readfile($archive_filename);
// remove temporary files
@unlink($archive_filename);
exit;
}
}
?>