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70 lines
2.4 KiB
70 lines
2.4 KiB
14 years ago
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<?php
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// $Id$
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module_load_include('inc', 'islandora_workflow_client', 'process');
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class image_resize extends Process {
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protected function process($pid, $parameters) {
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$required_params = array('dsid', 'width', 'file_ext');
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$missing_params = array();
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foreach ($required_params as $param)
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if (!isset($parameters[$param]))
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$missing_params[]=$param;
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if (count($missing_params) > 0) {
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$this->setMessage(t('Missing parameter(s) "%params" for image_resize process on "%pid"', array('%params' => join(',', $missing_params), '%pid' => $pid)));
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return FALSE;
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}
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module_load_include('inc', 'fedora_repository', 'api/fedora_item');
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module_load_include('inc', 'fedora_repository', 'ObjectHelper');
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$item = new fedora_item($pid);
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$dslist = $item->get_datastreams_list_as_array();
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if (!isset($dslist[$parameters['dsid']])) {
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$this->setMessage(t('Datastream "%dsid" could not be found for image_resize process on "%pid"', array('%dsid' => $parameters['dsid'], '%pid' => $pid)));
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return FALSE;
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}
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$ds = $dslist[$parameters['dsid']];
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$file = '/tmp/'. $ds['label'];
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$dest_ds = isset($parameters['dest_ds']) ? $parameters['dest_ds'] : 'TN';
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$objectHelper = new ObjectHelper();
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$objectHelper->makeObject($pid, $parameters['dsid'], FALSE, NULL, $file);
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$system = getenv('System');
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$file_suffix = '_'. $dest_ds . '.'. $parameters['file_ext'];
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$returnValue = TRUE;
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$output = array();
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$command = 'convert -resize '. $parameters['width'] .' -quality 85 '. $file . '[0] -strip '. $file . $file_suffix .' 2>&1 &';
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exec($command, $output, $returnValue);
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if (!file_exists($file . $file_suffix)) {
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$this->setMessage('command failed: '. htmlentities($command ."\n". join("\n", $output) ."\n return value: $returnValue"));
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@unlink($file);
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return FALSE;
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}
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if ($returnValue == '0') {
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if (isset($dslist[$dest_ds])) {
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$item->purge_datastream($dest_ds);
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}
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$ret = $item->add_datastream_from_file($file . $file_suffix, $dest_ds, $ds['label'] . $file_suffix);
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@unlink($file);
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@unlink($file . $file_suffix);
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if (!$ret) {
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$this->setMessage(t('Unable to add datastream "%dsid" to "%pid".', array('%dsid' => $dest_ds, '%pid' => $pid)));
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return FALSE;
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}
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return TRUE;
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}
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}
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}
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