//
//  NuTemplatePSTRElement.m
//  ResKnife (PB2)
//
//  Created by Uli Kusterer on Tue Aug 05 2003.
//  Copyright (c) 2003 M. Uli Kusterer. All rights reserved.
//

#import "NuTemplatePSTRElement.h"


@implementation NuTemplatePSTRElement

-(id)	initForType: (NSString*)t withLabel: (NSString*)l
{
	if( self = [super initForType:t withLabel:l] )
		stringValue = [[NSString alloc] init];
	
	return self;
}

-(void)	dealloc
{
	[stringValue release];
	
	[super dealloc];
}

-(id)	copyWithZone: (NSZone*)zone
{
	NuTemplatePSTRElement*	el = [super copyWithZone: zone];
	
	if( el )
		[el setStringValue: stringValue];
	
	return el;
}


-(void)	readDataFrom: (NuTemplateStream*)stream containingArray: (NSMutableArray*)containing
{
	char		buf[256] = { 0 };
	
	if( [type isEqualToString: @"PSTR"] )	// Packed, variable-length string.
	{
		[stream readAmount:1 toBuffer: buf];
		[stream readAmount:buf[0] toBuffer: (buf +1)];
	}
	else if( [type isEqualToString: @"P100"] )	// Constant-size string. Resourcerer-style P100, not ResEdit-style P0FF.
		[stream readAmount:256 toBuffer: buf];
	else if( [type isEqualToString: @"P020"] )	// Constant-size string. Resourcerer-style P020, not ResEdit-style P01F.
		[stream readAmount:32 toBuffer: buf];
	else if( [type isEqualToString: @"P040"] )	// Constant-size string. Resourcerer-style P040, not ResEdit-style P03F.
		[stream readAmount:64 toBuffer: buf];
	
	[self setStringValue: [NSString stringWithCString:(buf +1) length:buf[0]]];
	
	NSLog(@"PSTR: %@", stringValue);
}


// Before writeDataTo: is called, this is called to calculate the final resource size:
-(unsigned int)	sizeOnDisk
{
	if( [type isEqualToString: @"PSTR"] )
		return [stringValue length] +1;
	else if( [type isEqualToString: @"P100"] )	// Str255
		return 256;
	else if( [type isEqualToString: @"P020"] )	// Str31
		return 32;
	else if( [type isEqualToString: @"P040"] )	// Str63
		return 64;
	else
		return 1;
}

-(void)	writeDataTo: (NuTemplateStream*)stream
{
	unsigned char		buf[257] = { 0 };	// 256 + terminating zero-byte (which isn't written, but generated by getCString)
	
	[stringValue getCString:(buf +1) maxLength:255];
	buf[0] = [stringValue length];
	if( [type isEqualToString: @"PSTR"] )
		[stream writeAmount:([stringValue length] +1) fromBuffer:buf];
	else
		[stream writeAmount:[self sizeOnDisk] fromBuffer:buf];
}


-(void)	setStringValue: (NSString*)d
{
	[d retain];
	[stringValue release];
	stringValue = d;
}


-(NSString*)	stringValue
{
	return stringValue;
}



@end