untar mame-data.tgz to the application support directory.

This just uses NSTask to launch tar in the background.

.gitignore

@@ -2,3 +2,4 @@ dist
 embedded/mame64
 embedded/SDL2.framework
 build
+embedded/mame-data.tgz

Ample.xcodeproj/project.pbxproj

@@ -59,6 +59,7 @@
 		B6109A4324F5F377005CB652 /* agat7.plist in Resources */ = {isa = PBXBuildFile; fileRef = B6109A1624F5F376005CB652 /* agat7.plist */; };
 		B63C1B8B24FF4BF700511A71 /* Ample.m in Sources */ = {isa = PBXBuildFile; fileRef = B63C1B8A24FF4BF700511A71 /* Ample.m */; };
 		B63C1B8C24FF4BF700511A71 /* Ample.m in Sources */ = {isa = PBXBuildFile; fileRef = B63C1B8A24FF4BF700511A71 /* Ample.m */; };
+		B63C1B8E25004C6D00511A71 /* mame-data.tgz in Resources */ = {isa = PBXBuildFile; fileRef = B63C1B8D25004C6D00511A71 /* mame-data.tgz */; };
 		B64979C224EF6703008ABD20 /* MediaViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = B64979C124EF6703008ABD20 /* MediaViewController.m */; };
 		B64E15A924EA1D5300E8AD3D /* MachineViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = B64E15A824EA1D5300E8AD3D /* MachineViewController.m */; };
 		B65593B124ECB61800722E0C /* SlotViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = B65593B024ECB61800722E0C /* SlotViewController.m */; };
@@ -229,6 +230,7 @@
 		B6109A1624F5F376005CB652 /* agat7.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; path = agat7.plist; sourceTree = "<group>"; };
 		B63C1B8924FF4B7100511A71 /* Ample.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = Ample.h; sourceTree = "<group>"; };
 		B63C1B8A24FF4BF700511A71 /* Ample.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = Ample.m; sourceTree = "<group>"; };
+		B63C1B8D25004C6D00511A71 /* mame-data.tgz */ = {isa = PBXFileReference; lastKnownFileType = file; name = "mame-data.tgz"; path = "embedded/mame-data.tgz"; sourceTree = "<group>"; };
 		B64979C024EF6703008ABD20 /* MediaViewController.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = MediaViewController.h; sourceTree = "<group>"; };
 		B64979C124EF6703008ABD20 /* MediaViewController.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = MediaViewController.m; sourceTree = "<group>"; };
 		B64E15A724EA1D5300E8AD3D /* MachineViewController.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = MachineViewController.h; sourceTree = "<group>"; };
@@ -348,6 +350,7 @@
 		B66236BD24FDA7EA006CABD7 /* Embedded Content */ = {
 			isa = PBXGroup;
 			children = (
+				B63C1B8D25004C6D00511A71 /* mame-data.tgz */,
 				B66236B824FDA698006CABD7 /* mame64 */,
 				B66236B224FDA522006CABD7 /* SDL2.framework */,
 			);
@@ -535,6 +538,7 @@
 				B6109A3224F5F377005CB652 /* basis108.plist in Resources */,
 				B6109A4324F5F377005CB652 /* agat7.plist in Resources */,
 				B6109A2B24F5F377005CB652 /* elppa.plist in Resources */,
+				B63C1B8E25004C6D00511A71 /* mame-data.tgz in Resources */,
 				B6109A3B24F5F377005CB652 /* apple2gsr1.plist in Resources */,
 				B6D6DE3B24FACF4F00661A5F /* Defaults.plist in Resources */,
 				B6109A2224F5F377005CB652 /* models.plist in Resources */,

Ample/Ample.h

@@ -17,5 +17,6 @@ NSURL *SupportDirectory(void);
 extern NSString *kUseCustomMame;
 extern NSString *kMamePath;
 extern NSString *kAutoCloseLogWindow;
+extern NSString *kMameComponentsDate;
 
 #endif /* Ample_h */

Ample/Ample.m

@@ -27,3 +27,4 @@ NSURL *SupportDirectory(void) {
 NSString *kUseCustomMame = @"UseCustomMame";
 NSString *kMamePath = @"MamePath";
 NSString *kAutoCloseLogWindow = @"AutoCloseLogWindow";
+NSString *kMameComponentsDate = @"MameComponentsDate";

Ample/AppDelegate.m

@@ -5,12 +5,13 @@
 //  Created by Kelvin Sherlock on 8/16/2020.
 //  Copyright © 2020 Kelvin Sherlock. All rights reserved.
 //
-
+#import "Ample.h"
 #import "AppDelegate.h"
 #import "LaunchWindowController.h"
 #import "PreferencesWindowController.h"
 
 @interface AppDelegate ()
+@property (weak) IBOutlet NSWindow *installWindow;
 
 @end
 
@@ -36,10 +37,87 @@
         [[NSUserDefaults standardUserDefaults] registerDefaults: dict];
     }
     
-    _launcher = [LaunchWindowController new];
+
+
+    if ([self installMameComponents]) {
+        [self displayLaunchWindow];
+    }
+
+}
+
+-(void)displayLaunchWindow {
+
+    if (!_launcher) {
+        _launcher = [LaunchWindowController new];
+    }
     [_launcher showWindow: nil];
 }
 
+-(BOOL)installMameComponents {
+    
+    /* install the mame data components. */
+    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
+    NSBundle *bundle = [NSBundle mainBundle];
+    NSURL *sd = SupportDirectory();
+
+    NSURL *ample_url = [sd URLByAppendingPathComponent: @"Ample.plist"];
+    NSMutableDictionary *d = [NSMutableDictionary dictionaryWithContentsOfURL: ample_url];
+    
+    NSDate *oldDate = [d objectForKey: kMameComponentsDate];
+    NSDate *newDate = [defaults objectForKey: kMameComponentsDate];
+    if (![newDate isKindOfClass: [NSDate class]])
+        newDate = nil;
+    
+    if (!newDate) return YES; //????
+    if (oldDate && [oldDate compare: newDate] >= 0) return YES;
+
+    NSString *path = [bundle pathForResource: @"mame-data" ofType: @"tgz"];
+    if (!path) return YES; // Ample Lite?
+
+    
+    NSWindow *win = _installWindow;
+    [win makeKeyAndOrderFront: nil];
+    NSTask *task = [NSTask new];
+    NSArray *argv = @[
+        @"xfz",
+        path
+    ];
+    [task setExecutableURL: [NSURL fileURLWithPath: @"/usr/bin/tar"]];
+    [task setArguments: argv];
+    [task setCurrentDirectoryURL: sd];
+    
+    
+    dispatch_time_t when = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2 * NSEC_PER_SEC));
+    [task setTerminationHandler: ^(NSTask *task){
+       
+        dispatch_after(when, dispatch_get_main_queue(), ^{
+  
+            int st = [task terminationStatus];
+
+            if (st) {
+                NSAlert *alert = [NSAlert new];
+                [alert setMessageText: @"An error occurred extracting MAME components"];
+                [alert runModal];
+                [win close];
+                return;
+            }
+            
+            if (d) {
+                [d setObject: newDate forKey: kMameComponentsDate];
+                [d writeToURL: ample_url atomically: YES];
+            } else {
+                [@{ kMameComponentsDate: newDate } writeToURL: ample_url atomically: YES];
+            }
+            [win close];
+            [self displayLaunchWindow];
+        });
+        
+    }];
+    [task launch];
+
+    return NO;
+}
+
 
 - (void)applicationWillTerminate:(NSNotification *)aNotification {
     // Insert code here to tear down your application

Ample/Base.lproj/MainMenu.xib

@@ -3,6 +3,7 @@
     <dependencies>
         <deployment identifier="macosx"/>
         <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="15705"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
     <objects>
         <customObject id="-2" userLabel="File's Owner" customClass="NSApplication">
@@ -12,7 +13,11 @@
         </customObject>
         <customObject id="-1" userLabel="First Responder" customClass="FirstResponder"/>
         <customObject id="-3" userLabel="Application" customClass="NSObject"/>
-        <customObject id="Voe-Tx-rLC" customClass="AppDelegate"/>
+        <customObject id="Voe-Tx-rLC" customClass="AppDelegate">
+            <connections>
+                <outlet property="installWindow" destination="jWX-pY-Zpb" id="xAj-Vj-Vxn"/>
+            </connections>
+        </customObject>
         <customObject id="YLy-65-1bz" customClass="NSFontManager"/>
         <menu title="Main Menu" systemMenu="main" id="AYu-sK-qS6">
             <items>
@@ -680,5 +685,25 @@
             </items>
             <point key="canvasLocation" x="132" y="154"/>
         </menu>
+        <window title="Window" allowsToolTipsWhenApplicationIsInactive="NO" autorecalculatesKeyViewLoop="NO" restorable="NO" releasedWhenClosed="NO" visibleAtLaunch="NO" frameAutosaveName="" animationBehavior="default" id="jWX-pY-Zpb">
+            <rect key="contentRect" x="283" y="305" width="226" height="56"/>
+            <rect key="screenRect" x="0.0" y="0.0" width="2560" height="1417"/>
+            <view key="contentView" id="L7W-DF-UXe">
+                <rect key="frame" x="0.0" y="0.0" width="226" height="56"/>
+                <autoresizingMask key="autoresizingMask"/>
+                <subviews>
+                    <textField horizontalHuggingPriority="251" verticalHuggingPriority="750" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="iC1-A6-a6T">
+                        <rect key="frame" x="18" y="20" width="190" height="16"/>
+                        <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                        <textFieldCell key="cell" lineBreakMode="clipping" title="Installing MAME components…" id="ura-rh-zmZ">
+                            <font key="font" usesAppearanceFont="YES"/>
+                            <color key="textColor" name="labelColor" catalog="System" colorSpace="catalog"/>
+                            <color key="backgroundColor" name="textBackgroundColor" catalog="System" colorSpace="catalog"/>
+                        </textFieldCell>
+                    </textField>
+                </subviews>
+            </view>
+            <point key="canvasLocation" x="13" y="-182"/>
+        </window>
     </objects>
 </document>

Ample/Defaults.plist

@@ -2,6 +2,8 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key>MameComponentsDate</key>
+	<date>2020-09-02T16:00:00Z</date>
 	<key>UseCustomMame</key>
 	<false/>
 	<key>AutoCloseLogWindow</key>