ObjFW  Artifact [fd1f10a22d]

Artifact fd1f10a22df4bdea0fe5f7a88ff64d96ae63bff362c18879f49e0fee86204334:

• File src/OFXMLElementBuilder.m — part of check-in [e1e7ffa903] at 2011-09-22 23:25:42 on branch trunk — Exceptions are now autoreleased.

  This is safe as an "exception loop" can't happen, since if allocating
  an exception fails, it throws an OFAllocFailedException which is
  preallocated and can always be thrown.

  So, the worst case would be that an autorelease of an exception fails,
  triggering an OFOutOfMemoryException for which there is no memory,
  resulting in an OFAllocFailedException to be thrown. (user: js, size: 4648) [annotate] [blame] [check-ins using]

/*
 * Copyright (c) 2008, 2009, 2010, 2011
 *   Jonathan Schleifer <js@webkeks.org>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#include "config.h"

#define OF_XML_ELEMENT_BUILDER_M

#import "OFXMLElementBuilder.h"
#import "OFXMLElement.h"
#import "OFXMLParser.h"
#import "OFMutableArray.h"
#import "OFAutoreleasePool.h"

#import "OFMalformedXMLException.h"

#import "macros.h"

@implementation OFXMLElementBuilder
+ elementBuilder
{
	return [[[self alloc] init] autorelease];
}

- init
{
	self = [super init];

	@try {
		stack = [[OFMutableArray alloc] init];
	} @catch (id e) {
		[self release];
		@throw e;
	}

	return self;
}

- (void)dealloc
{
	[stack release];
	[(id)delegate release];

	[super dealloc];
}

- (id <OFXMLElementBuilderDelegate>)delegate
{
	OF_GETTER(delegate, YES)
}

- (void)setDelegate: (id <OFXMLElementBuilderDelegate>)delegate_
{
	OF_SETTER(delegate, delegate_, YES, NO)
}

-		 (void)parser: (OFXMLParser*)parser
  foundProcessingInstructions: (OFString*)pi
{
}

-    (void)parser: (OFXMLParser*)parser
  didStartElement: (OFString*)name
       withPrefix: (OFString*)prefix
	namespace: (OFString*)ns
       attributes: (OFArray*)attributes
{
	OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init];
	OFXMLElement *element;
	OFXMLAttribute **cArray;
	size_t i, count;
	IMP addAttribute;

	element = [OFXMLElement elementWithName: name
				      namespace: ns];

	cArray = [attributes cArray];
	count = [attributes count];
	addAttribute = [element methodForSelector: @selector(addAttribute:)];

	for (i = 0; i < count; i++) {
		if ([cArray[i] namespace] == nil &&
		    [[cArray[i] name] isEqual: @"xmlns"])
			continue;

		if ([[cArray[i] namespace]
		    isEqual: @"http://www.w3.org/2000/xmlns/"])
			[element setPrefix: [cArray[i] name]
			      forNamespace: [cArray[i] stringValue]];

		addAttribute(element, @selector(addAttribute:), cArray[i]);
	}

	[[stack lastObject] addChild: element];
	[stack addObject: element];

	[pool release];
}

-  (void)parser: (OFXMLParser*)parser
  didEndElement: (OFString*)name
     withPrefix: (OFString*)prefix
      namespace: (OFString*)ns
{
	if ([stack count] == 0) {
		[delegate elementBuilder: self
		    didNotExpectCloseTag: name
			      withPrefix: prefix
			       namespace: ns];
		return;
	}

	if ([stack count] == 1)
		[delegate elementBuilder: self
			 didBuildElement: [stack firstObject]];

	[stack removeLastObject];
}

-    (void)parser: (OFXMLParser*)parser
  foundCharacters: (OFString*)characters
{
	OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init];
	OFXMLElement *element =
	    [OFXMLElement elementWithCharacters: characters];

	if ([stack count] == 0)
		[delegate elementBuilder: self
			 didBuildElement: element];
	else
		[[stack lastObject] addChild: element];

	[pool release];
}

- (void)parser: (OFXMLParser*)parser
    foundCDATA: (OFString*)CDATA
{
	OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init];
	OFXMLElement *element = [OFXMLElement elementWithCDATA: CDATA];

	if ([stack count] == 0)
		[delegate elementBuilder: self
			 didBuildElement: element];
	else
		[[stack lastObject] addChild: element];

	[pool release];
}

- (void)parser: (OFXMLParser*)parser
  foundComment: (OFString*)comment
{
	OFAutoreleasePool *pool = [[OFAutoreleasePool alloc] init];
	OFXMLElement *element = [OFXMLElement elementWithComment: comment];

	if ([stack count] == 0)
		[delegate elementBuilder: self
			 didBuildElement: element];
	else
		[[stack lastObject] addChild: element];

	[pool release];
}

-	(OFString*)parser: (OFXMLParser*)parser
  foundUnknownEntityNamed: (OFString*)entity
{
	return [delegate elementBuilder: self
		foundUnknownEntityNamed: entity];
}
@end

@implementation OFObject (OFXMLElementBuilderDelegate)
- (void)elementBuilder: (OFXMLElementBuilder*)builder
       didBuildElement: (OFXMLElement*)elem
{
}

- (void)elementBuilder: (OFXMLElementBuilder*)builder
  didNotExpectCloseTag: (OFString*)name
	    withPrefix: (OFString*)prefix
	     namespace: (OFString*)ns
{
	@throw [OFMalformedXMLException exceptionWithClass: [builder class]
						    parser: nil];
}

- (OFString*)elementBuilder: (OFXMLElementBuilder*)builder
    foundUnknownEntityNamed: (OFString*)entity
{
	return nil;
}
@end