ample/Ample/LogWindowController.m

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//
// LogWindowController.m
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// Ample
//
// Created by Kelvin Sherlock on 8/29/2020.
// Copyright © 2020 Kelvin Sherlock. All rights reserved.
//
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#import "Ample.h"
#import "LogWindowController.h"
static NSMutableSet *LogWindows;
@interface LogWindowController ()
@property (unsafe_unretained) IBOutlet NSTextView *textView;
@end
@implementation LogWindowController {
NSTask *_task;
NSFileHandle *_handle;
}
+(void)initialize {
LogWindows = [NSMutableSet set];
}
-(NSString *)windowNibName {
return @"LogWindow";
}
+(id)controllerForTask: (NSTask *)task {
LogWindowController *controller = [[LogWindowController alloc] initWithWindowNibName: @"LogWindow"];
[controller runTask: task];
return controller;
}
static NSURL *MameURL(void) {
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
NSBundle *bundle = [NSBundle mainBundle];
if ([defaults boolForKey: kUseCustomMame]) {
NSString *path = [defaults stringForKey: kMamePath];
if (![path length]) return [NSURL fileURLWithPath: path];
}
return [bundle URLForAuxiliaryExecutable: @"mame64"];
}
static NSURL *MameWorkingDirectory(void) {
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
if ([defaults boolForKey: kUseCustomMame]) {
NSString *path = [defaults stringForKey: kMameWorkingDirectory];
if (![path length]) return [NSURL fileURLWithPath: path];
}
return SupportDirectory();
}
+(id)controllerForArgs: (NSArray *)args {
// NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
NSURL *url = MameURL();
if (!url) {
NSAlert *alert = [NSAlert new];
[alert setMessageText: @"Unable to find MAME executable path"];
[alert runModal];
return nil;
}
NSTask *task = [NSTask new];
[task setExecutableURL: url];
[task setArguments: args];
[task setCurrentDirectoryURL: MameWorkingDirectory()];
return [LogWindowController controllerForTask: task];
}
- (void)windowDidLoad {
[super windowDidLoad];
[LogWindows addObject: self];
// Implement this method to handle any initialization after your window controller's window has been loaded from its nib file.
}
-(void)appendString: (NSString *)string
{
if ([string length])
{
[[[_textView textStorage] mutableString] appendString: string];
}
}
-(NSError *)runTask: (NSTask *)task {
if (_task) return nil;
NSError *error = nil;
NSPipe *pipe = [NSPipe pipe];
// window not yet loaded until [self window] called.
const char *path = [[task executableURL] fileSystemRepresentation];
// if (cp) [self appendString: [NSString stringWithFormat: @"MAME path: %s", cp]];
const char *wd = [[task currentDirectoryURL] fileSystemRepresentation];
// if (cp) [self appendString: [NSString stringWithFormat: @"Working Directory: %s", cp]];
[task setStandardError: pipe];
[task setStandardOutput: pipe];
[task launchAndReturnError: &error];
if (error) {
// NSURL *url = [task executableURL];
// NSString *path = [NSString stringWithCString: [url fileSystemRepresentation] encoding: NSUTF8StringEncoding];
NSLog(@"NSTask error. Path = %s error = %@", path, error);
// [self appendString: path];
// [self appendString: [error description]];
return error;
}
_task = task;
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NSString *title = [NSString stringWithFormat: @"Ample Log - %u", [task processIdentifier]];
[[self window] setTitle: title];
_handle = [pipe fileHandleForReading];
if (path) [self appendString: [NSString stringWithFormat: @"MAME path: %s\n", path]];
if (wd) [self appendString: [NSString stringWithFormat: @"Working Directory: %s\n", wd]];
NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
[nc addObserver: self
selector: @selector(taskComplete:)
name: NSTaskDidTerminateNotification
object: _task];
[nc addObserver: self
selector: @selector(readComplete:)
name: NSFileHandleReadCompletionNotification
object: _handle];
[_handle readInBackgroundAndNotify];
[[self window] setDocumentEdited: YES];
return nil;
}
#pragma mark -
#pragma mark Notifications
-(void)readComplete:(NSNotification *)notification
{
// read complete, queue up another.
NSDictionary *dict = [notification userInfo];
NSData *data = [dict objectForKey: NSFileHandleNotificationDataItem];
if ([data length])
{
NSString *string = [[NSString alloc] initWithData: data encoding: NSUTF8StringEncoding];
[self appendString: string];
[_handle readInBackgroundAndNotify];
}
}
-(void)taskComplete: (NSNotification *)notification
{
BOOL ok = NO;
NSTaskTerminationReason reason;
int status;
NSString *string = nil;
reason = [_task terminationReason];
status = [_task terminationStatus];
if (reason == NSTaskTerminationReasonExit)
{
if (status == 0)
{
string = @"\n\n[Success]\n\n";
ok = YES;
}
else string = @"\n\n[An error occurred]\n\n";
}
else
{
string = @"\n\n[Caught signal]\n\n";
}
[self appendString: string];
_handle = nil;
_task = nil;
[[self window] setDocumentEdited: NO];
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if (ok && [[NSUserDefaults standardUserDefaults] boolForKey: kAutoCloseLogWindow]) {
[[self window] close];
//[LogWindows removeObject: self]; // close sends WindowWillClose notification.
}
}
#pragma mark - NSWindowDelegate
-(void)windowWillClose:(NSNotification *)notification {
[LogWindows removeObject: self];
}
@end