Drupal modules for browsing and managing Fedora-based digital repositories.
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<?php
/**
* @file
* The form displayed that shows the datastream version history.
*/
/**
* Function that returns markup for the datastream versions page.
*/
function islandora_datastream_version_table($datastream) {
module_load_include('inc', 'islandora', 'includes/datastream');
module_load_include('inc', 'islandora', 'includes/utilities');
$parent = $datastream->parent;
drupal_set_title(t("@dsid Previous Versions", array('@dsid' => $datastream->id)));
$audit_values = islandora_get_audit_trail($parent->id, $datastream->id);
$header = array();
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$header[] = array('data' => t('Created Date'));
$header[] = array('data' => t('Size'));
$header[] = array('data' => t('Label'));
$header[] = array('data' => t('Responsibility'));
$header[] = array('data' => t('Mime type'));
$header[] = array('data' => t('Operations'), 'colspan' => '2');
$rows = array();
foreach ($datastream as $version => $datastream_version) {
$row = array();
$reponsibility = $parent->owner;
foreach ($audit_values as $audit_value) {
$internal = $datastream_version->createdDate;
if ($audit_value['date'] == $datastream_version->createdDate) {
$reponsibility = $audit_value['responsibility'];
}
}
$user = user_load_by_name($reponsibility);
if ($user) {
$user_id = $user->uid;
$user_val = l($reponsibility, "user/$user_id");
}
else {
$user_val = $reponsibility;
}
$row[] = array(
'class' => 'datastream-date',
'data' => theme('islandora_datastream_view_link', array(
'datastream' => $datastream,
'label' => $datastream_version->createdDate->format(DATE_RFC850),
'version' => $version,
)),
);
$row[] = array(
'class' => 'datastream-size',
'data' => islandora_datastream_get_human_readable_size($datastream_version),
);
$row[] = array(
'class' => 'datastream-label',
'data' => $datastream_version->label,
);
$row[] = array(
'class' => 'datastream-responsibility',
'data' => $user_val,
);
$row[] = array(
'class' => 'datastream-mime',
'data' => $datastream_version->mimeType,
);
$row[] = array(
'class' => 'datastream-delete',
'data' => theme('islandora_datastream_delete_link', array(
'datastream' => $datastream,
'version' => $version,
)),
);
$row[] = array(
'class' => 'datastream-revert',
'data' => theme('islandora_datastream_revert_link', array(
'datastream' => $datastream,
'version' => $version,
)),
);
$rows[] = $row;
}
return theme('table', array('header' => $header, 'rows' => $rows));
}
/**
* The admin delete datastream form.
*
* @param array $form
* The Drupal form.
* @param array $form_state
* The Drupal form state.
* @param AbstractDatastream $datastream
* The datastream to be deleted.
* @param string $version
* The version number of the datastream we are trying to delete.
*
* @return array
* The drupal form definition.
*/
function islandora_delete_datastream_version_form(array $form, array &$form_state, AbstractDatastream $datastream, $version) {
if (!isset($datastream[$version]) || count($datastream) < 2) {
return drupal_not_found();
}
$form_state['datastream'] = $datastream;
$form_state['version'] = $version;
return confirm_form($form,
t('Are you sure you want to delete version @version of the @dsid datastream?', array('@dsid' => $datastream->id, '@version' => $version)),
"islandora/object/{$datastream->parent->id}",
t('This action cannot be undone.'),
t('Delete'),
t('Cancel')
);
}
/**
* Submit handler for the delete datastream form.
*
* Purges/Delete's the given AbstractDatastream if possible.
*
* The ISLANDORA_PRE_PURGE_DATASTREAM_HOOK will query other modules as to
* whether the given FedoraDatastream
* should be: blocked from purging; state set to 'Deleted'; or purged.
*
* @param array $form
* The Drupal form.
* @param array $form_state
* The Drupal form state.
*/
function islandora_delete_datastream_version_form_submit(array $form, array &$form_state) {
$datastream = $form_state['datastream'];
$version = $form_state['version'];
$datastream_id = $datastream->id;
$object = $datastream->parent;
try {
unset($datastream[$version]);
}
catch (Exception $e) {
drupal_set_message(t('Error deleting version %v of %s datastream from object %o %e', array(
'%v' => $version,
'%s' => $datastream_id,
'%o' => $object->label,
'%e' => $e->getMessage())), 'error');
}
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drupal_set_message(t('%d datastream version successfully deleted from Islandora object %o', array(
'%d' => $datastream_id,
'%o' => $object->label)));
$form_state['redirect'] = "islandora/object/{$object->id}/datastream/{$datastream->id}/version";
}
/**
* The admin revert datastream form.
*
* @param array $form
* The Drupal form.
* @param array $form_state
* The Drupal form state.
* @param AbstractDatastream $datastream
* The datastream to be deleted.
* @param string $version
* The version number of the datastream we are trying to revert to.
*
* @return array
* The drupal form definition.
*/
function islandora_revert_datastream_version_form(array $form, array &$form_state, AbstractDatastream $datastream, $version) {
if (!isset($datastream[$version]) || count($datastream) < 2) {
return drupal_not_found();
}
$form_state['dsid'] = $datastream->id;
$form_state['object_id'] = $datastream->parent->id;
$form_state['version'] = $version;
return confirm_form($form,
t('Are you sure you want to revert to version @version of the @dsid datastream?', array('@dsid' => $datastream->id, '@version' => $version)),
"islandora/object/{$datastream->parent->id}",
"",
t('Revert'),
t('Cancel')
);
}
/**
* Submit handler for the revert datastream form.
*
* Reverts the given AbstractDatastream if possible.
*
* @param array $form
* The Drupal form.
* @param array $form_state
* The Drupal form state.
*/
function islandora_revert_datastream_version_form_submit(array $form, array &$form_state) {
$islandora_object = islandora_object_load($form_state['object_id']);
$datastream_to_revert = $islandora_object[$form_state['dsid']];
$version = $form_state['version'];
// Create file holding specified datastream version, and set datastream to it.
$datastream_to_revert_to = $datastream_to_revert[$version];
if (in_array($datastream_to_revert->controlGroup, array('R', 'E'))) {
$datastream_to_revert->url = $datastream_to_revert_to->url;
}
else {
$filename = file_create_filename('datastream_temp_file', 'temporary://');
$datastream_to_revert_to->getContent($filename);
$datastream_to_revert->setContentFromFile($filename);
file_unmanaged_delete($filename);
}
if ($datastream_to_revert->mimeType != $datastream_to_revert_to->mimeType) {
$datastream_to_revert->mimeType = $datastream_to_revert_to->mimeType;
}
if ($datastream_to_revert->label != $datastream_to_revert_to->label) {
$datastream_to_revert->label = $datastream_to_revert_to->label;
}
drupal_set_message(t('%d datastream successfully reverted to version %v for Islandora object %o', array(
'%d' => $datastream_to_revert->id,
'%v' => $version,
'%o' => $islandora_object->label)));
$form_state['redirect'] = "islandora/object/{$islandora_object->id}/datastream/{$datastream_to_revert->id}/version";
}
/**
* Process available dsids, mime and extensions for a given object.
*
* @param AbstractObject $object
* The FedoraObject to process available extensions
*
* @return array()
* An associative array, merged from calls to
* islandora_get_datastreams_requirements_from_content_models()
* and an objects dsid's.
*/
function islandora_get_object_extensions(AbstractObject $object) {
$extensions = islandora_get_datastreams_requirements_from_models($object->models);
foreach ($object as $datastream) {
// Could be a datastream not associated in a content model,
// such as user added.
if (!isset($extensions[$datastream->id])) {
// Add the extensions manually.
$extensions[$datastream->id] = array(
'id' => $datastream->id,
'optional' => TRUE,
'mime' => array($datastream->mimeType),
);
}
}
return $extensions;
}
/**
* The admin replace datastream form.
*
* @param array $form
* The Drupal form.
* @param array $form_state
* The Drupal form state.
* @param AbstractDatastream $datastream
* The datastream to be updated.
*
* @return array
* The drupal form definition.
*/
function islandora_datastream_version_replace_form($form, &$form_state, AbstractDatastream $datastream) {
module_load_include('inc', 'islandora', 'includes/content_model');
module_load_include('inc', 'islandora', 'includes/utilities');
module_load_include('inc', 'islandora', 'includes/mimetype.utils');
$object = islandora_object_load($datastream->parent->id);
$form_state['object_id'] = $object->id;
$form_state['dsid'] = $datastream->id;
$form_state['object'] = $object;
$extensions = islandora_get_extensions_for_datastream($object, $datastream->id);
$valid_extensions = implode(' ', $extensions);
$upload_size = min((int) ini_get('post_max_size'), (int) ini_get('upload_max_filesize'));
return array(
'dsid_fieldset' => array(
'#type' => 'fieldset',
'#title' => t("Update Datastream"),
'#collapsible' => FALSE,
'#collapsed' => FALSE,
'dsid' => array(
'#type' => 'markup',
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'#markup' => t("<div>DSID: <strong>@dsid</strong></div>", array('@dsid' => $datastream->id)),
),
'label' => array(
'#type' => 'markup',
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'#markup' => t("<div>Label: <strong>@label</strong></div>", array('@label' => $datastream->label)),
),
'file' => array(
'#type' => 'managed_file',
'#required' => TRUE,
'#title' => t('Upload Document'),
'#size' => 64,
'#description' => t('Select a file to upload.<br/>Files must be less than <strong>@size MB.</strong>', array('@size' => $upload_size)),
'#upload_location' => 'public://',
'#upload_validators' => array(
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'file_validate_extensions' => array($valid_extensions),
// Assume its specified in MB.
'file_validate_size' => array($upload_size * 1024 * 1024),
),
),
'submit' => array(
'#type' => 'submit',
'#value' => t('Add Contents'),
),
),
);
}
/**
* Submit handler for the replace datastream form.
*
* Adds a new datastream version as latest.
*
* @param array $form
* The Drupal form.
* @param array $form_state
* The Drupal form state.
*/
function islandora_datastream_version_replace_form_submit($form, &$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 = $object[$form_state['dsid']];
if ($ds->mimetype != $file->filemime) {
$ds->mimetype = $file->filemime;
}
$path = drupal_realpath($file->uri);
$ds->setContentFromFile($path);
file_delete($file);
}
catch (exception $e) {
drupal_set_message(t('An error occurred during datastream updates. See watchlog for more information.'), 'error');
watchdog('islandora',
'Failed to add new versionable datastream.<br/>code: @code<br/>message: @msg',
array(
'@code' => $e->getCode(),
'@msg' => $e->getMessage(),
),
WATCHDOG_ERROR
);
file_delete($file);
return;
}
drupal_set_message(t("Successfully Updated Datastream"));
}
/**
* Gets Audit datastream values from foxml.
*
* @param string $pid
* PID of parent object
*
* @return array
* Array of audit values
*/
function islandora_get_audit_trail($pid, $dsid) {
$url = variable_get('islandora_base_url', 'http://localhost:8080/fedora');
$connection = islandora_get_tuque_connection(NULL, $url);
$xml = $connection->api->m->getObjectXml($pid);
$simple_xml = simplexml_load_string($xml);
$fox_ns = "info:fedora/fedora-system:def/foxml#";
$audit_ns = 'info:fedora/fedora-system:def/audit#';
$foxml_nodes = $simple_xml->children($fox_ns);
foreach ($foxml_nodes as $node) {
if ($node->attributes()->ID == "AUDIT") {
$content = $node->datastreamVersion->xmlContent;
$audit_nodes = $content->children($audit_ns);
}
}
$audit_values = array();
if (isset($audit_nodes)) {
foreach ($audit_nodes->auditTrail->record as $record) {
if ($dsid == $record->componentID) {
$values['responsibility'] = $record->responsibility;
$values['date'] = $record->date;
$audit_values[] = $values;
}
}
}
return $audit_values;
}