♻️ Refactor Composer window logic

phpmon/Common/Core/Process.swift

@@ -0,0 +1,59 @@
+//
+//  Process.swift
+//  PHP Monitor
+//
+//  Created by Nico Verbruggen on 23/02/2022.
+//  Copyright © 2022 Nico Verbruggen. All rights reserved.
+//
+
+import Foundation
+
+extension Process {
+    
+    /**
+     When a process is running in the background, it can send content to standard
+     output or standard error, just like it would in a terminal. Using `listen`
+     allows us to react whenever data is received by running a particular closure,
+     depending on which type of data is received.
+     */
+    public func listen(
+        didReceiveStandardOutputData: @escaping (String) -> Void,
+        didReceiveStandardErrorData: @escaping (String) -> Void
+    ) {
+        let outputPipe = Pipe()
+        let errorPipe = Pipe()
+        
+        self.standardOutput = outputPipe
+        self.standardError = errorPipe
+        
+        [
+         (outputPipe, didReceiveStandardOutputData),
+         (errorPipe, didReceiveStandardErrorData)
+        ].forEach { (pipe: Pipe, callback: @escaping (String) -> Void) in
+            pipe.fileHandleForReading.waitForDataInBackgroundAndNotify()
+            NotificationCenter.default.addObserver(
+                forName: NSNotification.Name.NSFileHandleDataAvailable,
+                object: pipe.fileHandleForReading,
+                queue: nil
+            ) { notification in
+                if let outputString = String(data: pipe.fileHandleForReading.availableData, encoding: String.Encoding.utf8) {
+                    callback(outputString)
+                }
+                pipe.fileHandleForReading.waitForDataInBackgroundAndNotify()
+            }
+        }
+    }
+    
+    /**
+     After the process is done running, you'll want to stop listening.
+     */
+    public func haltListening() {
+        if let pipe = self.standardOutput as? Pipe {
+            NotificationCenter.default.removeObserver(pipe.fileHandleForReading)
+        }
+        if let pipe = self.standardError as? Pipe {
+            NotificationCenter.default.removeObserver(pipe.fileHandleForReading)
+        }
+    }
+    
+}

phpmon/Common/Core/Shell.swift

@@ -119,42 +119,6 @@ public class Shell {
         return task
     }
     
-    public static func captureOutput(
-        _ task: Process,
-        didReceiveStdOutData: @escaping (String) -> Void,
-        didReceiveStdErrData: @escaping (String) -> Void
-    ) {
-        let outputPipe = Pipe()
-        let errorPipe = Pipe()
-        
-        task.standardOutput = outputPipe
-        task.standardError = errorPipe
-        
-        [(outputPipe, didReceiveStdOutData), (errorPipe, didReceiveStdErrData)].forEach {
-            (pipe: Pipe, callback: @escaping (String) -> Void) in
-            pipe.fileHandleForReading.waitForDataInBackgroundAndNotify()
-            NotificationCenter.default.addObserver(
-                forName: NSNotification.Name.NSFileHandleDataAvailable,
-                object: pipe.fileHandleForReading,
-                queue: nil
-            ) { notification in
-                if let outputString = String(data: pipe.fileHandleForReading.availableData, encoding: String.Encoding.utf8) {
-                    callback(outputString)
-                }
-                pipe.fileHandleForReading.waitForDataInBackgroundAndNotify()
-            }
-        }
-    }
-    
-    public static func haltCapturingOutput(_ task: Process) {
-        if let pipe = task.standardOutput as? Pipe {
-            NotificationCenter.default.removeObserver(pipe.fileHandleForReading)
-        }
-        if let pipe = task.standardError as? Pipe {
-            NotificationCenter.default.removeObserver(pipe.fileHandleForReading)
-        }
-    }
-    
     public class Output {
         public let standardOutput: String
         public let errorOutput: String