Drupal modules for browsing and managing Fedora-based digital repositories.
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<?php
/**
* @file
* Functions for generating/validating/submitting the add datastream form.
*/
/**
* The admin add datastream form.
*
* @param array $form
* The Drupal form.
* @param array $form_state
* The Drupal form state.
* @param AbstractObject $object
* The object to be deleted.
*
* @return array
* The drupal form definition.
*/
function islandora_add_datastream_form(array $form, array &$form_state, AbstractObject $object) {
module_load_include('inc', 'islandora', 'includes/content_model');
module_load_include('inc', 'islandora', 'includes/utilities');
form_load_include($form_state, 'inc', 'islandora', 'includes/add_datastream.form');
$form_state['object_id'] = $object->id;
// @deprecated Storing objects in $form_state is asking for a bad time...
// Causes issues with derivative generation when we try to use it.
$form_state['object'] = $object;
$datastream_requirements = islandora_get_missing_datastreams_requirements($object);
$unused_datastreams = array_keys($datastream_requirements);
$unused_datastreams = "'" . implode("', '", $unused_datastreams) . "'";
$upload_size = min((int) ini_get('post_max_size'), (int) ini_get('upload_max_filesize'));
return array(
'#redirect' => "islandora/object/{$object->id}",
'#attributes' => array(
'enctype' => 'multipart/form-data',
),
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'dsid_fieldset' => array(
'#type' => 'fieldset',
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'#title' => t('Add a Datastream'),
'#collapsible' => FALSE,
'#collapsed' => FALSE,
'dsid' => array(
'#title' => 'Datastream ID',
'#description' => t("An ID for this stream that is unique to this object. Must start with a letter and contain only alphanumeric characters, dashes and underscores. The following datastreams are defined by this content model but don't currently exist: <strong>@unused_dsids</strong>.", array('@unused_dsids' => $unused_datastreams)),
'#type' => 'textfield',
'#size' => 64,
'#maxlength' => 64,
'#required' => TRUE,
'#element_validate' => array(
'islandora_add_datastream_form_field_is_not_an_existing_datastream_id',
'islandora_add_datastream_form_field_starts_with_a_letter',
'islandora_add_datastream_form_field_is_valid_dsid',
),
'#autocomplete_path' => "islandora/object/{$object->id}/manage/datastreams/add/autocomplete",
),
'label' => array(
'#title' => 'Datastream Label',
'#required' => TRUE,
'#size' => 64,
'#maxlength' => 64,
'#description' => t('A human-readable label.'),
'#type' => 'textfield',
'#element_validate' => array('islandora_add_datastream_form_field_does_not_contain_a_forward_slash'),
),
'file' => array(
'#type' => 'managed_file',
'#required' => TRUE,
'#title' => t('Upload Document'),
'#size' => 48,
'#description' => t('Select a file to upload.<br/>Files must be less than <strong>@size MB.</strong>', array('@size' => $upload_size)),
'#default_value' => isset($form_state['values']['files']) ? $form_state['values']['files'] : NULL,
'#upload_location' => file_default_scheme() . '://',
'#upload_validators' => array(
// Disable default file_validate_extensions; we need direct control.
'file_validate_extensions' => array(NULL),
// Assume its specified in MB.
'file_validate_size' => array($upload_size * 1024 * 1024),
),
),
'submit' => array(
'#type' => 'submit',
'#value' => t('Add Datastream'),
),
),
);
}
/**
* Checks if the given form field doesn't already repersent a Datastream ID.
*
* @param array $element
* The form field to check.
* @param array $form_state
* The Drupal form state.
* @param array $form
* The Drupal form.
*/
function islandora_add_datastream_form_field_is_not_an_existing_datastream_id(array $element, array &$form_state, array $form) {
$object = islandora_object_load($form_state['object_id']);
if (isset($object[$element['#value']])) {
form_error($element, t("@title already exists in the object.", array('@title' => $element['#title'])));
}
}
/**
* Checks if the given form field starts with a letter.
*
* @param array $element
* The form field to check.
* @param array $form_state
* The Drupal form state.
* @param array $form
* The Drupal form.
*/
function islandora_add_datastream_form_field_starts_with_a_letter(array $element, array &$form_state, array $form) {
if (!(preg_match("/^[a-zA-Z]/", $element['#value']))) {
form_error($element, t("@title has to start with a letter.", array('@title' => $element['#title'])));
}
}
/**
* Checks if the given form field contains a valid datastream ID.
*
* @param array $element
* The form field to check.
* @param array $form_state
* The Drupal form state.
* @param array $form
* The Drupal form.
*/
function islandora_add_datastream_form_field_is_valid_dsid(array $element, array &$form_state, array $form) {
module_load_include('inc', 'islandora', 'includes/utilities');
if (!islandora_is_valid_dsid($element['#value'])) {
form_error($element, t("@title contains invalid characters.", array('@title' => $element['#title'])));
}
}
/**
* Validation callback for islandora_add_datastream_form.
*
* Checks if the given datastream can accept the given MIME type.
*/
function islandora_add_datastream_form_validate(array $form, array &$form_state) {
module_load_include('inc', 'islandora', 'includes/mimetype.utils');
$extensions = islandora_get_extensions_for_datastream(
$form_state['object'],
$form_state['values']['dsid']
);
$file = file_load($form_state['values']['file']);
// Only validate extensions if mimes defined in ds-composite.
if ($file && $extensions) {
$errors = file_validate_extensions($file, implode(' ', $extensions));
if (count($errors) > 0) {
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form_set_error(
'file',
t("!error (for the set DSID)", array('!error' => $errors[0]))
);
}
}
}
/**
* Checks if the given form field contains a "/" character.
*
* @param array $element
* The form field to check.
* @param array $form_state
* The Drupal form state.
* @param array $form
* The Drupal form.
*/
function islandora_add_datastream_form_field_does_not_contain_a_forward_slash(array $element, array &$form_state, array $form) {
if (strpos($element['#value'], '/') !== FALSE) {
form_error($element, t('@title cannot contain a "/" character.', array('@title' => $element['#title'])));
}
}
/**
* Adds the new datastream based on the submitted values.
*
* Only creates managed datastreams at the moment.
*
* @param array $form
* The Drupal form.
* @param array $form_state
* The Drupal form state.
*/
function islandora_add_datastream_form_submit(array $form, array &$form_state) {
$object = islandora_object_load($form_state['object_id']);
$form_state['redirect'] = "islandora/object/{$object->id}";
$file = file_load($form_state['values']['file']);
try {
$ds = $object->constructDatastream($form_state['values']['dsid'], 'M');
$ds->label = $form_state['values']['label'];
$ds->mimetype = $file->filemime;
$path = drupal_realpath($file->uri);
$ds->setContentFromFile($path);
$object->ingestDatastream($ds);
file_delete($file);
}
catch (exception $e) {
drupal_set_message(t('@message', array('@message' => check_plain($e->getMessage()))), 'error');
// Make sure to delete anyways.
file_delete($file);
return;
}
drupal_set_message(t("Successfully Added Datastream!"));
}
/**
* Callback for an autocomplete field in the admin add datastream form.
*
* It lists the missing required (may be optional) datastreams.
*
* @param AbstractObject $object
* The object used to check for missing required datastreams used to populate
* the options in this callback.
* @param string $query
* vThe user query to match against the missing required datastreams.
*/
function islandora_add_datastream_form_autocomplete_callback(AbstractObject $object, $query = '') {
module_load_include('inc', 'islandora', 'includes/content_model');
module_load_include('inc', 'islandora', 'includes/utilities');
$dsids = array_keys(islandora_get_missing_datastreams_requirements($object));
$dsids = array_combine($dsids, $dsids);
$query = trim($query);
if (!empty($query)) {
$filter = function($id) use($query) {
return stripos($id, $query) !== FALSE;
};
$dsids = array_filter($dsids, $filter);
}
drupal_json_output($dsids);
}