//---------------------------------------------------------------------------------------
//  EDStyleSheetProcessor.m created by erik on Thu Jun 13 2002
//  @(#)$Id: EDStyleSheetProcessor.m,v 1.3 2002-12-16 22:42:34 erik Exp $
//
//  Copyright (c) 2002 by Erik Doernenburg. All rights reserved.
//
//  Permission to use, copy, modify and distribute this software and its documentation
//  is hereby granted, provided that both the copyright notice and this permission
//  notice appear in all copies of the software, derivative works or modified versions,
//  and any portions thereof, and that both notices appear in supporting documentation,
//  and that credit is given to Erik Doernenburg in all documents and publicity
//  pertaining to direct or indirect use of this code or its derivatives.
//
//  THIS IS EXPERIMENTAL SOFTWARE AND IT IS KNOWN TO HAVE BUGS, SOME OF WHICH MAY HAVE
//  SERIOUS CONSEQUENCES. THE COPYRIGHT HOLDER ALLOWS FREE USE OF THIS SOFTWARE IN ITS
//  "AS IS" CONDITION. THE COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY
//  DAMAGES WHATSOEVER RESULTING DIRECTLY OR INDIRECTLY FROM THE USE OF THIS SOFTWARE
//  OR OF ANY DERIVATIVE WORK.
//---------------------------------------------------------------------------------------

#import <EDCommon/EDCommon.h>
#import "EDSLStyleElement.h"
#import "EDStyleSheetContext.h"
#import "EDStyleSheetDocument.h"
#import "EDStyleSheetProcessor.h"


//---------------------------------------------------------------------------------------
    @implementation EDStyleSheetProcessor
//---------------------------------------------------------------------------------------

- (id)initWithContentsOfFile:(NSString *)fullPath
{
#warning * should handle inaccessible files
    [self initWithStyleSheet:[NSData dataWithContentsOfFile:fullPath]];
    return self;
}


- (id)initWithStyleSheet:(NSData *)source
{
    NSString 	 *path;
    NSDictionary *slTags;
    EDMLParser	 *styleParser;

    [self init];

    NS_DURING

    if((path = [[NSBundle bundleForClass:[self class]] pathForResource:@"EDSLTags" ofType:@"plist"]) == nil)
        [NSException raise:NSGenericException format:@"Missing resource EDSLTags.plist"];
    slTags = [[NSString stringWithContentsOfFile:path] propertyList];

    styleParser = [[EDMLParser parserWithTagDefinitions:slTags] retain];
    [styleParser setPreservesWhitespace:YES];

    document = [[styleParser parseXMLDocument:source] retain];
    
    NS_HANDLER
        [self autorelease];
        [localException raise];
    NS_ENDHANDLER

    return self;
}


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


- (NSString *)processObject:(id)object
{
    EDStyleSheetContext		*rootContext;
    NSMutableString	*buffer;

    rootContext = [[[EDStyleSheetContext alloc] init] autorelease];
    [rootContext setValue:object forVariable:@"object"];
    [rootContext setShouldOmitSpaces:YES];
    buffer = [NSMutableString string];
    
    [[document rootElement] appendToString:buffer inContext:rootContext];

    return buffer;
}



//---------------------------------------------------------------------------------------
    @end
//---------------------------------------------------------------------------------------