Linux better dialog open command handling & recorder starts only once

Author: kimbtech

core/Recorder.php

@@ -1,6 +1,8 @@
 <?php
 class Recorder {
 
+	const PID_FILE = '/run/lock/TaskTimeTerminate';
+
 	public Dialog $dialog;
 
 	public function __construct(bool $inTerminal = false) {
@@ -91,5 +93,31 @@ private function recordNew(JSONReader $r) : void {
 			$r->setValue(['end'], -1 );
 		}
 	}
+
+	public static function runOnlyOnce() : void {
+		if( Utilities::getOS() === Utilities::OS_LINUX ){
+			$pid = getmypid();
+			if( $pid !== false ){
+				// check if other running
+				if( is_file( self::PID_FILE ) ){
+					$otherPid = file_get_contents(self::PID_FILE);
+					if( is_numeric($otherPid) ){
+						if( !posix_kill( intval($otherPid), SIGQUIT ) ){
+							posix_kill( intval($otherPid), SIGKILL );
+						}
+					}
+				}
+				// set yourself running
+				file_put_contents( self::PID_FILE, $pid, LOCK_EX );
+
+				// delete run file on exit
+				register_shutdown_function( function ($pid) {
+					if( is_file( self::PID_FILE ) && file_get_contents(self::PID_FILE) == $pid ){
+						unlink(self::PID_FILE);
+					}
+				}, $pid);
+			}
+		}
+	}
 }
 ?>

core/Utilities.php

@@ -4,7 +4,7 @@
  */
 class Utilities {
 
-	const VERSION = 'v0.8.0 alpha';
+	const VERSION = 'v0.8.1 alpha';
 
 	/**
 	 * OS Consts

core/platform/LinuxDialog.php

@@ -24,10 +24,12 @@ public function open() : void {
 			'2> /dev/null'
 		);
 
-		exec(implode(' ', $cmd), $stdout, $return);
+		$handle = popen(implode(' ', $cmd), 'r');
+		$stdout = fgets($handle);
+		pclose($handle);
 
-		if( $return === 0 && !empty($stdout) ){
-			$stdout = explode(' ', $stdout[0]);
+		if( !empty($stdout) ){
+			$stdout = explode(' ', trim($stdout));
 
 			if( count($stdout) !== 3 ){
 				$this->open();

record.php

@@ -2,6 +2,7 @@
 <?php
 require_once(__DIR__ . '/core/load.php');
 
+Recorder::runOnlyOnce(); // kills other recorder processes
 $recorder = new Recorder();
 
 while( true ){