ObjFW  Artifact [9ccc35fa21]

Artifact 9ccc35fa216e447079938a206e0d6621860815bb979a78b55d8b6347f667eaf9:

• File src/OFXMLElementBuilder.m — part of check-in [48980f2297] at 2015-11-29 11:43:05 on branch trunk — Make properties a requirement and clean up code

  This increases the required GCC version from 4.0 to 4.6 (exception:
  Apple GCC, which already supports this with >= 4.0 starting with OS X
  10.5). Since even GCC 4.6 is really old by now, there is no point in
  still supporting something even older and making the code ugly because
  of that. While some hardware and OS support was dropped from GCC 4.6
  compared to GCC 4.0, there is nothing in there that would be an
  interesting target with the exception of BeOS maybe - but a port to BeOS
  can also be achieved using the Haiku support. The other dropped OSes are
  mostly old versions of OSes while newer ones are still being supported
  (and those newer versions of those OSes still support the same
  hardware). (user: js, size: 4639) [annotate] [blame] [check-ins using]

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015
 *   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 "OFArray.h"

#import "OFMalformedXMLException.h"

@implementation OFXMLElementBuilder
@synthesize delegate = _delegate;

+ (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];
}

-		 (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 *const *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