Implement filter through command

Closes #131

Frameworks/DocumentWindow/src/OakRunCommandWindowController.mm

@@ -2,6 +2,7 @@
 #import <OakFoundation/OakHistoryList.h>
 #import <OakFoundation/OakFoundation.h>
 #import <OakAppKit/OakUIConstructionFunctions.h>
+#import <OakTextView/OakTextView.h>
 
 @interface OakRunCommandWindowController () <NSWindowDelegate>
 @property (nonatomic) NSTextField*         commandLabel;
@@ -13,6 +14,7 @@
 @property (nonatomic) NSObjectController*  objectController;
 @property (nonatomic) OakHistoryList*      commandHistoryList;
 @property (nonatomic) NSMutableArray*      myConstraints;
+@property (nonatomic) output::type         outputType;
 @end
 
 #ifndef CONSTRAINT
@@ -30,6 +32,7 @@
 {
 	if((self = [super initWithWindow:[[NSPanel alloc] initWithContentRect:NSZeroRect styleMask:(NSTitledWindowMask|NSClosableWindowMask|NSResizableWindowMask|NSMiniaturizableWindowMask) backing:NSBackingStoreBuffered defer:NO]]))
 	{
+		self.outputType           = output::replace_input;
 		self.myConstraints        = [NSMutableArray new];
 
 		self.commandLabel         = OakCreateLabel(@"Command:");
@@ -39,8 +42,21 @@
 		self.executeButton        = OakCreateButton(@"Execute");
 		self.cancelButton         = OakCreateButton(@"Cancel");
 
-		for(NSString* title in @[ @"Replace Input", @"Insert After Input" ])
-			[self.resultPopUpButton addItemWithTitle:title];
+		NSDictionary* outputOptions = @{
+			@(output::replace_input) : @"Replace Input",
+			@(output::after_input)   : @"Insert After Input",
+			// @(output::new_window)    : @"New Window",
+			@(output::tool_tip)      : @"Tool Tip",
+		};
+
+		NSMenu* menu = [self.resultPopUpButton menu];
+		[menu removeAllItems];
+		char key = '0';
+		for(NSNumber* type in outputOptions)
+			[[menu addItemWithTitle:outputOptions[type] action:@selector(takeOutputTypeFrom:) keyEquivalent:[NSString stringWithFormat:@"%c", ++key]] setTag:[type intValue]];
+
+		[self.resultLabel  setAlignment:NSRightTextAlignment];
+		[self.commandLabel setAlignment:NSRightTextAlignment];
 
 		self.executeButton.action = @selector(execute:);
 		self.cancelButton.action  = @selector(cancel:);
@@ -54,6 +70,9 @@
 		[self.commandComboBox bind:NSValueBinding         toObject:_objectController withKeyPath:@"content.commandHistoryList.head" options:nil];
 		[self.commandComboBox bind:NSContentValuesBinding toObject:_objectController withKeyPath:@"content.commandHistoryList.list" options:nil];
 
+		[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(commandChanged:) name:NSControlTextDidChangeNotification object:self.commandComboBox];
+		[self commandChanged:nil];
+
 		NSDictionary* views = @{
 			@"commandLabel" : self.commandLabel,
 			@"command"      : self.commandComboBox,
@@ -70,8 +89,8 @@
 			[contentView addSubview:view];
 		}
 
-		CONSTRAINT(@"H:|-(>=20,==20@75)-[commandLabel]-[command(>=250)]-|", NSLayoutFormatAlignAllBaseline);
-		CONSTRAINT(@"H:|-(>=20,==20@75)-[resultLabel]-[result]-(>=20)-|", NSLayoutFormatAlignAllBaseline);
+		CONSTRAINT(@"H:|-[commandLabel]-[command(>=250)]-|", NSLayoutFormatAlignAllBaseline);
+		CONSTRAINT(@"H:|-[resultLabel(==commandLabel)]-[result]-(>=20)-|", NSLayoutFormatAlignAllBaseline);
 		CONSTRAINT(@"H:|-(>=20)-[cancel]-[execute]-|", NSLayoutFormatAlignAllBaseline);
 		CONSTRAINT(@"V:|-[command]-[result]", NSLayoutFormatAlignAllLeft);
 		CONSTRAINT(@"V:[result]-[execute]-|", 0);
@@ -88,22 +107,30 @@
 	return self;
 }
 
+- (void)takeOutputTypeFrom:(id)sender
+{
+	self.outputType = (output::type)[sender tag];
+}
+
+- (void)commandChanged:(NSNotification*)notification
+{
+	self.executeButton.enabled = NSNotEmptyString([self.commandComboBox.stringValue stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]]);
+}
+
 - (IBAction)execute:(id)sender
 {
-	NSLog(@"%s", sel_getName(_cmd));
+	if(![self.objectController commitEditing])
+		return;
+
+	NSString* command = self.commandComboBox.stringValue;
+	if(id textView = [NSApp targetForAction:@selector(filterDocumentThroughCommand:input:output:)])
+		[textView filterDocumentThroughCommand:command input:input::selection output:self.outputType];
 
-	if([self.objectController commitEditing])
-	{
-		NSString* command = self.commandComboBox.stringValue;
-		if(NSNotEmptyString(command))
-			NSLog(@"%s run ‘%@’", sel_getName(_cmd), command);
-	}
 	[self close];
 }
 
 - (IBAction)cancel:(id)sender
 {
-	NSLog(@"%s", sel_getName(_cmd));
 	[self close];
 }
 @end

Frameworks/OakTextView/src/OakTextView.h

@@ -120,6 +120,8 @@ PUBLIC @interface OakTextView : OakView <NSTextInput, NSTextFieldDelegate>
 - (GVLineRecord const&)lineRecordForPosition:(CGFloat)yPos;
 - (GVLineRecord const&)lineFragmentForLine:(NSUInteger)aLine column:(NSUInteger)aColumn;
 
+- (BOOL)filterDocumentThroughCommand:(NSString*)commandString input:(input::type)inputUnit output:(output::type)outputUnit;
+
 - (NSPoint)positionForWindowUnderCaret;
 - (scope::context_t const&)scopeContext;
 - (folding_state_t)foldingStateForLine:(NSUInteger)lineNumber;

Frameworks/OakTextView/src/OakTextView.mm

@@ -27,9 +27,12 @@
 #import <ns/spellcheck.h>
 #import <text/classification.h>
 #import <text/format.h>
+#import <text/trim.h>
 #import <text/utf16.h>
 #import <text/utf8.h>
 #import <oak/debug.h>
+#import <editor/write.h>
+#import <io/exec.h>
 
 OAK_DEBUG_VAR(OakTextView_TextInput);
 OAK_DEBUG_VAR(OakTextView_Accessibility);
@@ -2275,6 +2278,68 @@ static char const* kOakMenuItemTitle = "OakMenuItemTitle";
 	return res = GVLineRecord(record.line, record.softline, record.top, record.bottom, record.baseline);
 }
 
+- (BOOL)filterDocumentThroughCommand:(NSString*)commandString input:(input::type)inputUnit output:(output::type)outputUnit
+{
+	auto environment = editor->variables(std::map<std::string, std::string>(), to_s([self scopeAttributes]));
+	if(io::process_t process = io::spawn(std::vector<std::string>{ "/bin/sh", "-c", to_s(commandString) }, environment))
+	{
+		bool inputWasSelection = false;
+		text::range_t inputRange = ng::write_unit_to_fd(document->buffer(), editor->ranges().last(), document->buffer().indent().tab_size(), process.in, inputUnit, input::entire_document, input_format::text, scope::selector_t(), environment, &inputWasSelection);
+		close(process.in);
+
+		__block std::string output, error;
+		__block bool success = false;
+
+		dispatch_group_t group = dispatch_group_create();
+
+		dispatch_group_async(group, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
+			io::exhaust_fd(process.out, &output);
+		});
+
+		dispatch_group_async(group, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
+			io::exhaust_fd(process.err, &error);
+		});
+
+		dispatch_group_async(group, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
+			int status = 0;
+			if(waitpid(process.pid, &status, 0) != process.pid)
+				perror("waitpid");
+			else if(!WIFEXITED(status))
+				NSLog(@"*** abnormal exit (%d) from ‘%@’\n", status, commandString);
+			else if(WEXITSTATUS(status) != 0)
+				NSLog(@"*** exit code %d from ‘%@’\n", WEXITSTATUS(status), commandString);
+			else
+				success = true;
+		});
+
+		dispatch_group_wait(group, DISPATCH_TIME_FOREVER);
+		dispatch_release(group);
+
+		error = text::trim(error);
+		if(!error.empty())
+		{
+			OakShowToolTip([NSString stringWithCxxString:error], [self positionForWindowUnderCaret]);
+			if(success && output.empty())
+				return YES;
+		}
+
+		if(success)
+		{
+			if(outputUnit == output::tool_tip)
+			{
+				OakShowToolTip([NSString stringWithCxxString:text::trim(output)], [self positionForWindowUnderCaret]);
+			}
+			else
+			{
+				AUTO_REFRESH;
+				editor->handle_result(output, outputUnit, output_format::text, output_caret::after_output, inputRange, environment);
+			}
+			return YES;
+		}
+	}
+	return NO;
+}
+
 // ===================
 // = Macro Recording =
 // ===================