<?php
/**
* @file datastream.inc
*/
define('DS_COMP_STREAM', 'DS-COMPOSITE-MODEL');
/**
*
* @global object $user
* @param string $object_id
* @param string $dsid
* @return stream
* prints datastream to browser
*/
function islandora_datastream_as_attachment($object_id, $dsid) {
module_load_include('inc', 'islandora', 'RestConnection');
global $user;
try {
$restConnection = new RestConnection($user);
$fedora_object = new FedoraObject($object_id, $restConnection->repository);
} catch (Exception $e) {
drupal_set_message(t('Error getting Islanndora datastream $d for object %s', array('%s' => $object_id, '%d' => $dsid)), 'error');
return"";
}
header('Content-type: ' . $fedora_object[$dsid]->mimetype);
header('Content-length: ' . $fedora_object[$dsid]->size);
header("Cache-control: private");
$method = arg(5);
if (isset($method) & & $method == 'download') {
header("Content-Disposition: attachment; filename=\"" . $fedora_object[$dsid]->label);
}
print($fedora_object[$dsid]->content);
exit();
}
/**
*
* @param array $arr
* an array of dsids that are defined by this objects cmodels
* @param string $ds_comp_stream
* the dscomposite stream as xml
*/
function islandora_get_defined_dsids_array(& $arr, $ds_comp_stream) {
$sxml = new SimpleXMLElement($ds_comp_stream);
foreach ($sxml->dsTypeModel as $ds) {
//$arr[$ds['ID']]
$mimes = array();
foreach ($ds->form as $form) {
$mimetype = (string) $form['MIME'];
$mimes[] = $mimetype;
}
$dsid = (string) $ds['ID'];
if ($dsid != 'AUDIT') {
$arr[(string) $ds['ID']] = $mimes;
}
}
}
/**
*
* @global type $user
* @param string $object_id
* @return string|array
*/
function islandora_get_unused_dsids($object_id) {
module_load_include('inc', 'islandora', 'RestConnection');
global $user;
try {
$restConnection = new RestConnection($user);
$fedora_object = new FedoraObject($object_id, $restConnection->repository);
} catch (Exception $e) {
drupal_set_message(t('Error getting Islandora object %s ', array('%s' => $object_id)), 'error');
return;
}
if (!isset($fedora_object)) {
drupal_set_message(t('Could not create add datastream form for %s'), array('%s' => $object_id));
return;
}
$models = $fedora_object->models;
$defined_dsids = array();
if (isset($models)) {
foreach ($models as $model) {
try {
$model_object = new FedoraObject($model, $restConnection->repository);
if (isset($model_object[DS_COMP_STREAM])) {
$dscomposite_stream = $model_object[DS_COMP_STREAM]->content;
islandora_get_defined_dsids_array($defined_dsids, $dscomposite_stream);
}
} catch (Exception $e) {
//do nothing as other objects may have a dscompsite stream
}
}
}
foreach ($defined_dsids as $key => $value) {
if (isset($fedora_object[$key])) {
unset($defined_dsids[$key]); //ds exists in the object so don't show in the dropdown
}
}
return $defined_dsids;
}
/**
* buids the default add datastream form
* @param string $object_id
* @param array $form_state
* @return array
* a form ready to be rendered with a call to Drupal render
*/
function islandora_get_add_datastream_form($object_id, & $form_state) {
$unused_dsids = islandora_get_unused_dsids($object_id); //$defined_dsids;
$form = array();
$form['add_fieldset'] = array(
'#type' => 'fieldset',
'#title' => 'Add a datastream',
'#collapsible' => TRUE,
'#collapsed' => TRUE,
);
$form['add_fieldset']['add_datastream_label'] = array(
'#value' => t('< br / > < h3 > Add Datastream:< / h3 > '),
'#weight' => -10,
);
$form['pid'] = array(
'#type' => 'hidden',
'#value' => "$object_id"
);
$form['add_fieldset']['stream_label'] = array(
'#title' => 'Datastream Label',
'#required' => 'TRUE',
'#description' => t('A Human readable label'),
'#type' => 'textfield'
);
$form['#attributes']['enctype'] = 'multipart/form-data';
$form['add_fieldset']['add-stream-file-location'] = array(
'#type' => 'file',
'#title' => t('Upload Document'),
'#size' => 48,
// '#required'=>'TRUE',
'#description' => t('The file to upload.')
);
$form['#redirect'] = "islandora/object/$object_id/";
$form['add_fieldset']['submit'] = array(
'#type' => 'submit',
'#value' => t('Add Datastream')
);
if (!empty($unused_dsids)) {
$dsidsForForm = array();
foreach ($unused_dsids as $key => $value) {
$dsidsForForm[$key] = $key;
}
$form['add_fieldset']['stream_id'] = array(
'#type' => 'select',
'#title' => t('Datastream ID'),
'#default_value' => variable_get('feed_item_length', 'teaser'),
'#weight' => '-1',
'#description' => t('Datastream IDs defined by the content model.'),
);
$form['add_fieldset']['stream_id']['#options'] = $dsidsForForm;
}
else {
$form['add_fieldset']['stream_id'] = array(
'#title' => 'Datastream ID',
'#required' => 'TRUE',
'#description' => t('An ID for this stream that is unique to this object. Must start with a letter and contain only alphanumeric characters and dashes and underscores.'),
'#type' => 'textfield',
'#weight' => -1,
);
}
return $form;
}
/**
* Default implmentation currently only does M (managed datastreams)
* other modules can hook form alter to add other functionality
* @global string $base_url
* @global object $user
* Drupal user
* @param array $form
* @param array $form_state
* @return type
*/
function islandora_add_datastream_form_submit($form, & $form_state) {
global $base_url;
if (!empty($form_state['submit']) & & $form_state['submit'] == 'OK') {
$form_state['rebuild'] = TRUE;
return;
}
$file = $form_state['values']['add-stream-file-location'];
$file = drupal_realpath($file);
$object_id = $form_state['values']['pid'];
$dsid = $form_state['values']['stream_id'];
$ds_label = $form_state['values']['stream_label']; // Add the file extention to the end of the label.;
//$dformat = $mimetype->getType($file);
$controlGroup = "M";
//if ($dformat == 'text/xml') {
// $controlGroup = 'X';
//}
global $user;
try {
$restConnection = new RestConnection($user);
$fedora_object = new FedoraObject($object_id, $restConnection->repository);
$ds = $fedora_object->constructDatastream($dsid, $controlGroup);
$ds->label = $ds_label;
$ds->setContentFromFile($file);
$fedora_object->ingestDatastream($ds);
$d_file = file_load($form_state['values']['fid']);
file_delete($d_file);
} catch (exception $e) {
drupal_set_message(t('@message', array('@message' => check_plain($e->getMessage()))), 'error');
return;
}
$form_state['rebuild'] = TRUE;
}
/**
* validates this datastream id against its allowed mimetypes in the dscomposite
* of its content models.
* @param array $form
* @param array $form_state
* @return boolean
*/
function islandora_add_datastream_form_validate($form, & $form_state) {
module_load_include('inc', 'islandora', 'includes/MimeClass');
$mimetype = new MimeClass();
if ($form_state['clicked_button']['#value'] == 'OK') {
$form_state['rebuild'] = TRUE;
return;
}
$dsid = $form_state['values']['stream_id'];
$dsLabel = $form_state['values']['stream_label'];
if (strlen($dsid) > 64) {
form_set_error('', t('Data stream ID cannot be more than 64 characters.'));
return FALSE;
}
if (!(preg_match("/^[a-zA-Z]/", $dsid))) {
form_set_error('', t("Data stream ID (@dsid) has to start with a letter.", array('@dsid' => check_plain($dsid))));
return FALSE;
}
if (strlen($dsLabel) > 64) {
form_set_error('', t('Data stream Label cannot be more than 64 characters.'));
return FALSE;
}
if (strpos($dsLabel, '/')) {
form_set_error('', t('Data stream Label cannot contain a "/".'));
return FALSE;
}
$mimetype = new MimeClass();
$unused_dsids = islandora_get_unused_dsids($form_state['values']['pid']);
$types_allowed = $unused_dsids[$dsid];
$arr = array();
foreach ($types_allowed as $type) {
$arr[] = $mimetype->getExtension($type);
}
$file = file_save_upload('add-stream-file-location', array('file_validate_extensions' => $arr));
if ($file) {
$form_state['values']['add-stream-file-location'] = $file->uri;
$form_state['values']['fid'] = $file->fid; //so we can load it to delete later
}
else {
form_set_error('add-stream-file-location', t('There was no file uploaded'));
}
}
/**
* buids the default add datastream form
* @param string $object_id
* @param array $form_state
* @return array
* a form ready to be rendered with a call to Drupal render
*/
function islandora_add_datastream_form($form, & $form_state, $object_id) {
$unused_dsids = islandora_get_unused_dsids($object_id); //$defined_dsids;
$form = array();
$form['add_fieldset'] = array(
'#type' => 'fieldset',
'#title' => 'Add a datastream',
'#collapsible' => FALSE,
'#collapsed' => FALSE,
);
$form['add_fieldset']['add_datastream_label'] = array(
'#value' => t('< br / > < h3 > Add Datastream:< / h3 > '),
'#weight' => -10,
);
$form['pid'] = array(
'#type' => 'hidden',
'#value' => "$object_id"
);
$form['add_fieldset']['stream_label'] = array(
'#title' => 'Datastream Label',
'#required' => 'TRUE',
'#description' => t('A Human readable label'),
'#type' => 'textfield'
);
$form['#attributes']['enctype'] = 'multipart/form-data';
$form['add_fieldset']['add-stream-file-location'] = array(
'#type' => 'file',
'#title' => t('Upload Document'),
'#size' => 48,
// '#required'=>'TRUE',
'#description' => t('The file to upload.')
);
$form['#redirect'] = "islandora/object/$object_id/";
$form['add_fieldset']['submit'] = array(
'#type' => 'submit',
'#value' => t('Add Datastream')
);
if (!empty($unused_dsids)) {
$dsidsForForm = array();
foreach ($unused_dsids as $key => $value) {
$dsidsForForm[$key] = $key;
}
$form['add_fieldset']['stream_id'] = array(
'#type' => 'select',
'#title' => t('Datastream ID'),
'#default_value' => variable_get('feed_item_length', 'teaser'),
'#weight' => '-1',
'#description' => t('Datastream IDs defined by the content model.'),
);
$form['add_fieldset']['stream_id']['#options'] = $dsidsForForm;
}
else {
$form['add_fieldset']['stream_id'] = array(
'#title' => 'Datastream ID',
'#required' => 'TRUE',
'#description' => t('An ID for this stream that is unique to this object. Must start with a letter and contain only alphanumeric characters and dashes and underscores.'),
'#type' => 'textfield',
'#weight' => -1,
);
}
return $form;
}
