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<?php
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// $Id$
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/**
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* @file Utility and API functions for zoomify.module
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*/
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function _zoomify_images($node) {
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$images = array();
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foreach (module_implements('images') as $module) {
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$these_images = module_invoke($module, 'images', $node);
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if (!empty($these_images)) {
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$images = $images + $these_images;
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}
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}
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return $images;
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}
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function _zoomify_basepath() {
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$basepath = file_directory_path().'/zoomify';
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if (!file_check_directory($basepath, FILE_CREATE_DIRECTORY)) {
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$msg = t('Could not create path %path', array('%path' => $basepath));
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drupal_set_message($msg, 'error');
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watchdog('zoomify', $msg, WATCHDOG_ERROR);
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}
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return $basepath;
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}
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function _zoomify_nodepath($node) {
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return file_create_path(_zoomify_basepath().'/'.$node->nid);
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}
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function _zoomify_filepath($node, $fid) {
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return file_create_path(_zoomify_nodepath($node).'/'.$fid);
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}
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function _zoomify_identical($node, $fid, $filepath) {
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$md5 = md5_file($filepath);
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$md5_path = _zoomify_filepath($node, $fid).'/Image.md5';
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if (!file_exists($md5_path)) return FALSE;
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$md5_existing = file_get_contents($md5_path);
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return $md5_existing == $md5;
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}
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function _zoomify_insert_node($node) {
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$images = _zoomify_images($node);
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if (empty($images)) return;
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foreach ($images as $fid => $filepath) {
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_zoomify_process($node, $fid, $filepath);
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}
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}
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function _zoomify_process($node, $fid, $filepath) {
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// TODO: Let user adjust maximum time for scripts or provide better mechanism.
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set_time_limit(0);
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$info = image_get_info($filepath);
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if ($info === FALSE) {
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$msg = t('Could not find image info for file %path.', array('%path' => $filepath));
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watchdog('zoomify', $msg, WATCHDOG_ERROR);
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drupal_set_message($msg, 'error');
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return;
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}
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if (($info['width'] < variable_get('zoomify_minimum_width', 1024))
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&& ($info['height'] < variable_get('zoomify_minimum_height', 768))) return;
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// Call the Python tilemaker script on the input file.
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$pathinfo = pathinfo_filename($filepath);
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$cmd = 'python '.drupal_get_path('module', 'zoomify').'/ZoomifyImage/ZoomifyFileProcessor.py'.
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' "'.$filepath.'"'.
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' 2>&1';
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$return = 0;
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$output = array();
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exec($cmd, $output, $return);
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if ($return) {
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$msg = t('ZoomifyFileProcessor.py returned an error:<br />!output', array('!output' => implode('<br />', $output)));
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watchdog('zoomify', $msg, WATCHDOG_ERROR);
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drupal_set_message($msg, 'error');
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return;
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}
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else {
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$msg = t('Tiles created for file %path.', array('%path' => $filepath));
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watchdog('zoomify', $msg, WATCHDOG_NOTICE);
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drupal_set_message($msg, 'status');
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}
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if (!file_check_directory(_zoomify_nodepath($node), FILE_CREATE_DIRECTORY)) {
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$msg = t('Could not create path %path.', array('%path' => _zoomify_nodepath($node)));
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drupal_set_message($msg, 'error');
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watchdog('zoomify', $msg, WATCHDOG_ERROR);
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}
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rename($pathinfo['dirname'].'/'.$pathinfo['filename'], _zoomify_filepath($node, $fid));
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$md5 = md5_file($filepath);
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$md5_path = _zoomify_filepath($node, $fid).'/Image.md5';
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file_put_contents($md5_path, $md5);
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}
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function _zoomify_delete_node($node) {
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if (is_dir(_zoomify_nodepath($node))) {
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rrmdir(_zoomify_nodepath($node));
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$msg = t('Tiles deleted for node %nid.', array('%nid' => $node->nid));
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watchdog('zoomify', $msg, WATCHDOG_NOTICE);
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drupal_set_message($msg, 'status');
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}
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}
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function _zoomify_update_node($node) {
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$old_images = file_scan_directory(_zoomify_nodepath($node), '.*', array('.', '..'), 0, FALSE);
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$images = _zoomify_images($node);
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foreach ($images as $fid => $filepath) {
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if (!_zoomify_identical($node, $fid, $filepath)) {
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rrmdir(_zoomify_filepath($node, $fid));
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_zoomify_process($node, $fid, $filepath);
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}
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}
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foreach ($old_images as $old_image) {
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if (!array_key_exists($old_image->basename, $images) && is_dir($old_image->filename)) {
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rrmdir($old_image->filename);
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$msg = t('Tiles deleted for obsolete file %fid.', array('%fid' => $old_image->basename));
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watchdog('zoomify', $msg, WATCHDOG_NOTICE);
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drupal_set_message($msg, 'status');
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}
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}
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}
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