ObjFW  Artifact [c7b5dfc686]

Artifact c7b5dfc68628b96231b7adf028187bd30ae72b639241032acfa561f1227231e3:

• File src/OFXMLElementBuilder.m — part of check-in [3d16a30f41] at 2013-06-22 12:12:36 on branch trunk — Rework exceptions.

  This mostly removes the argument for the class in which the exception
  occurred. As backtraces were recently added for all platforms, the
  passed class does not give any extra information on where the exception
  occurred anymore.

  This also removes a few other arguments which were not too helpful. In
  the past, the idea was to pass as many arguments as possible so that it
  is easier to find the origin of the exception. However, as backtraces
  are a much better way to find the origin, those are not useful anymore
  and just make the exception more cumbersome to use. The rule is now to
  only pass arguments that might help in recovering from the exception or
  provide information that is otherwise not easily accessible. (user: js, size: 4774) [annotate] [blame] [check-ins using]

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013
 *   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"

#import "OFXMLElementBuilder.h"
#import "OFXMLElement.h"
#import "OFXMLAttribute.h"
#import "OFXMLCharacters.h"
#import "OFXMLCDATA.h"
#import "OFXMLComment.h"
#import "OFXMLProcessingInstructions.h"
#import "OFXMLParser.h"
#import "OFMutableArray.h"

#import "OFMalformedXMLException.h"

#import "macros.h"

@implementation OFXMLElementBuilder
+ (instancetype)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];

	[super dealloc];
}

- (id <OFXMLElementBuilderDelegate>)delegate
{
	return _delegate;
}

- (void)setDelegate: (id <OFXMLElementBuilderDelegate>)delegate
{
	_delegate = delegate;
}

-		 (void)parser: (OFXMLParser*)parser
  foundProcessingInstructions: (OFString*)pi
{
	OFXMLProcessingInstructions *node = [OFXMLProcessingInstructions
	    processingInstructionsWithString: pi];
	OFXMLElement *parent = [_stack lastObject];

	if (parent != nil)
		[parent addChild: node];
	else if ([_delegate respondsToSelector:
	    @selector(elementBuilder:didBuildParentlessNode:)])
		[_delegate elementBuilder: self
		   didBuildParentlessNode: node];
}

-    (void)parser: (OFXMLParser*)parser
  didStartElement: (OFString*)name
	   prefix: (OFString*)prefix
	namespace: (OFString*)namespace
       attributes: (OFArray*)attributes
{
	OFXMLElement *element;
	OFXMLAttribute **objects;
	size_t i, count;

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

	objects = [attributes objects];
	count = [attributes count];

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

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

		[element addAttribute: objects[i]];
	}

	[[_stack lastObject] addChild: element];
	[_stack addObject: element];
}

-  (void)parser: (OFXMLParser*)parser
  didEndElement: (OFString*)name
	 prefix: (OFString*)prefix
      namespace: (OFString*)namespace
{
	switch ([_stack count]) {
	case 0:
		if ([_delegate respondsToSelector: @selector(elementBuilder:
		    didNotExpectCloseTag:prefix:namespace:)])
			[_delegate elementBuilder: self
			     didNotExpectCloseTag: name
					   prefix: prefix
					namespace: namespace];
		else
			@throw [OFMalformedXMLException exception];

		return;
	case 1:
		[_delegate elementBuilder: self
			  didBuildElement: [_stack firstObject]];
		break;
	}

	[_stack removeLastObject];
}

-    (void)parser: (OFXMLParser*)parser
  foundCharacters: (OFString*)characters
{
	OFXMLCharacters *node;
	OFXMLElement *parent;

	node = [OFXMLCharacters charactersWithString: characters];
	parent = [_stack lastObject];

	if (parent != nil)
		[parent addChild: node];
	else if ([_delegate respondsToSelector:
	    @selector(elementBuilder:didBuildParentlessNode:)])
		[_delegate  elementBuilder: self
		    didBuildParentlessNode: node];
}

- (void)parser: (OFXMLParser*)parser
    foundCDATA: (OFString*)CDATA
{
	OFXMLCDATA *node = [OFXMLCDATA CDATAWithString: CDATA];
	OFXMLElement *parent = [_stack lastObject];

	if (parent != nil)
		[parent addChild: node];
	else if ([_delegate respondsToSelector:
	    @selector(elementBuilder:didBuildParentlessNode:)])
		[_delegate elementBuilder: self
		   didBuildParentlessNode: node];
}

- (void)parser: (OFXMLParser*)parser
  foundComment: (OFString*)comment
{
	OFXMLComment *node = [OFXMLComment commentWithString: comment];
	OFXMLElement *parent = [_stack lastObject];

	if (parent != nil)
		[parent addChild: node];
	else if ([_delegate respondsToSelector:
	    @selector(elementBuilder:didBuildParentlessNode:)])
		[_delegate elementBuilder: self
		   didBuildParentlessNode: node];
}

-	(OFString*)parser: (OFXMLParser*)parser
  foundUnknownEntityNamed: (OFString*)entity
{
	if ([_delegate respondsToSelector:
	    @selector(elementBuilder:foundUnknownEntityNamed:)])
		return [_delegate elementBuilder: self
			 foundUnknownEntityNamed: entity];

	return nil;
}
@end