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<?php |
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/** |
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* @author tarjei huse |
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* @package midcom.services.rcs |
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* @copyright The Midgard Project, http://www.midgard-project.org |
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* @license http://www.gnu.org/licenses/lgpl.html GNU Lesser General Public License |
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*/ |
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/** |
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* @package midcom.services.rcs |
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*/ |
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abstract class midcom_services_rcs_backend |
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{ |
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/** |
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* Cached revision history for the object |
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* |
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* @var midcom_services_rcs_history |
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*/ |
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private $history; |
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/** |
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* The current object |
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*/ |
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protected $object; |
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/** |
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* @var midcom_services_rcs_config |
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*/ |
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protected $config; |
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public function __construct($object, midcom_services_rcs_config $config) |
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{ |
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$this->object = $object; |
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$this->config = $config; |
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$this->test_config(); |
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} |
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protected function test_config() |
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{ |
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if (!is_writable($this->config->get_rootdir())) { |
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throw new midcom_error("The root directory {$this->config->get_rootdir()} is not writable!"); |
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} |
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} |
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protected function generate_filename() : string |
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{ |
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$guid = $this->object->guid; |
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// Keep files organized to subfolders to keep filesystem sane |
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$dirpath = $this->config->get_rootdir() . "/{$guid[0]}/{$guid[1]}"; |
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if (!file_exists($dirpath)) { |
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debug_add("Directory {$dirpath} does not exist, attempting to create", MIDCOM_LOG_INFO); |
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mkdir($dirpath, 0777, true); |
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} |
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return "{$dirpath}/{$guid}"; |
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} |
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protected function read_handle(string $command) : array |
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{ |
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$fh = popen($command, "r"); |
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$output = stream_get_contents($fh); |
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pclose($fh); |
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return explode("\n", $output); |
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} |
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protected function run_command(string $command) |
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{ |
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$status = $output = null; |
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$command .= ' 2>&1'; |
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debug_add("Executing '{$command}'"); |
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exec($command, $output, $status); |
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if ($status !== 0) { |
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debug_print_r('Got output: ', $output); |
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throw new midcom_error("Command '{$command}' returned with status {$status}:" . implode("\n", $output), MIDCOM_LOG_WARN); |
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} |
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} |
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/** |
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* Save a revision of an object, or create a revision if none exists |
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* |
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* @param midcom_core_dbaobject $object the object to save. |
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* @param string $updatemessage the message to be saved with the object. |
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* @throws midcom_error on serious errors. |
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*/ |
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abstract public function update($updatemessage = null); |
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abstract public function get_revision($revision) : array; |
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/** |
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* Lists the number of changes that has been done to the object |
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* Order: The first entry is the newest. |
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*/ |
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abstract protected function load_history() : array; |
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public function get_history() : midcom_services_rcs_history |
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{ |
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if ($this->history === null) { |
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$revisions = $this->load_history(); |
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$this->history = new midcom_services_rcs_history($revisions); |
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} |
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return $this->history; |
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} |
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/** |
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* Get a html diff between two versions. |
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* |
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* @param string $oldest_revision id of the oldest revision |
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* @param string $latest_revision id of the latest revision |
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*/ |
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public function get_diff($oldest_revision, $latest_revision) : array |
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{ |
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$oldest = $this->get_revision($oldest_revision); |
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$newest = $this->get_revision($latest_revision); |
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$return = []; |
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$oldest = array_intersect_key($oldest, $newest); |
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$repl = [ |
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'<del>' => "<span class=\"deleted\">", |
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'</del>' => '</span>', |
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'<ins>' => "<span class=\"inserted\">", |
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'</ins>' => '</span>' |
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]; |
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foreach ($oldest as $attribute => $oldest_value) { |
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if (is_array($oldest_value)) { |
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continue; |
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} |
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$return[$attribute] = [ |
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'old' => $oldest_value, |
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'new' => $newest[$attribute] |
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]; |
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if ($oldest_value != $newest[$attribute]) { |
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$lines1 = explode("\n", $oldest_value); |
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$lines2 = explode("\n", $newest[$attribute]); |
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$renderer = new midcom_services_rcs_renderer_html_sidebyside(['old' => $oldest_revision, 'new' => $latest_revision]); |
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if ($lines1 != $lines2) { |
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$diff = new Diff($lines1, $lines2); |
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// Run the diff |
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$return[$attribute]['diff'] = $diff->render($renderer); |
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// Modify the output for nicer rendering |
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$return[$attribute]['diff'] = strtr($return[$attribute]['diff'], $repl); |
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} |
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} |
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} |
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return $return; |
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} |
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/** |
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* Restore an object to a certain revision. |
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* |
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* @param string $revision of revision to restore object to. |
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* @return boolean true on success. |
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*/ |
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public function restore_to_revision($revision) : bool |
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{ |
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$new = $this->get_revision($revision); |
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$mapper = new midcom_helper_exporter_xml(); |
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$this->object = $mapper->data2object($new, $this->object); |
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$this->object->set_rcs_message("Reverted to revision {$revision}"); |
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return $this->object->update(); |
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} |
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} |
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flack /
openpsa
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