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AePubReader/Classes/CDataChunk.h

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+//
+//  CDataChunk.h
+//  Thumbprint
+//
+//  Created by Lee Buck on 4/21/09.
+//  Copyright 2009 Blue Bright Ventures. All rights reserved.
+//
+//	This program is free software: you can redistribute it and/or modify
+//	it under the terms of the GNU General Public License as published by
+//	the Free Software Foundation, either version 3 of the License, or
+//	(at your option) any later version.
+
+//	This program is distributed in the hope that it will be useful,
+//	but WITHOUT ANY WARRANTY; without even the implied warranty of
+//	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//	GNU General Public License for more details.
+
+//	Commercial licences without many of the obligations of GPL 
+//	are available for a nomial fee at [email protected].
+
+//	You should have received a copy of the GNU General Public License
+//	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#import <Foundation/Foundation.h>
+#import "Chunk.h"
+
+/**
+	CDataChunk a chunk corresponding to a CDATA section
+ */
+@interface CDataChunk : Chunk {
+
+}
+
+@end

AePubReader/Classes/CDataChunk.m

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+//
+//  CDataChunk.m
+//  Thumbprint
+//
+//  Created by Lee Buck on 4/21/09.
+//  Copyright 2009 Blue Bright Ventures. All rights reserved.
+//
+//	This program is free software: you can redistribute it and/or modify
+//	it under the terms of the GNU General Public License as published by
+//	the Free Software Foundation, either version 3 of the License, or
+//	(at your option) any later version.
+
+//	This program is distributed in the hope that it will be useful,
+//	but WITHOUT ANY WARRANTY; without even the implied warranty of
+//	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//	GNU General Public License for more details.
+
+//	Commercial licences without many of the obligations of GPL 
+//	are available for a nomial fee at [email protected].
+
+//	You should have received a copy of the GNU General Public License
+//	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#import "CDataChunk.h"
+
+
+@implementation CDataChunk
+
+-(NSString*)kind{
+	return ChunkKindCData;
+}
+
+-(NSRange)interiorRange{
+	return NSMakeRange(range.location + 9, range.length - 12);
+}
+
++(NSString*)humanName{
+	return @"cdata";
+}
+
+@end

AePubReader/Classes/CSSPartMatcher.h

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+//
+//  CSSPartMatcher.h
+//  Thumbprint
+//
+//  Created by Lee Buck on 4/19/09.
+//  Copyright 2009 Blue Bright Ventures. All rights reserved.
+//
+//	This program is free software: you can redistribute it and/or modify
+//	it under the terms of the GNU General Public License as published by
+//	the Free Software Foundation, either version 3 of the License, or
+//	(at your option) any later version.
+
+//	This program is distributed in the hope that it will be useful,
+//	but WITHOUT ANY WARRANTY; without even the implied warranty of
+//	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//	GNU General Public License for more details.
+
+//	Commercial licences without many of the obligations of GPL 
+//	are available for a nomial fee at [email protected].
+
+//	You should have received a copy of the GNU General Public License
+//	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#import <Foundation/Foundation.h>
+#import "Element.h"
+@class CSSSelectorMatcher;
+
+/**
+ *	Responsible for representing a successful match on a part.
+ *	It is presented elements in an attempt to complete the next part of the match
+ *
+ */
+@interface CSSPartMatcher : NSObject {
+	CSSSelectorMatcher* selectorMatcher; // not retained
+	Element* matchedElement;
+	int matchedPartIndex;
+	NSMutableArray* matchersForNextPart;
+}
+@property (nonatomic, retain) Element* matchedElement;
+@property int matchedPartIndex;
+
+-(id)initWithElement:(Element*) anElement selectorMatcher:(CSSSelectorMatcher*)aSelectorMatcher;
+//-(void)pruneMatchesForElement:(Element*)anElement;
+-(BOOL)matchNextElement:(Element*) nextElement forIndex: (int) index;
+
+@end

AePubReader/Classes/CSSPartMatcher.m

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+//
+//  CSSPartMatcher.m
+//  Thumbprint
+//
+//  Created by Lee Buck on 4/19/09.
+//  Copyright 2009 Blue Bright Ventures. All rights reserved.
+//
+//	This program is free software: you can redistribute it and/or modify
+//	it under the terms of the GNU General Public License as published by
+//	the Free Software Foundation, either version 3 of the License, or
+//	(at your option) any later version.
+
+//	This program is distributed in the hope that it will be useful,
+//	but WITHOUT ANY WARRANTY; without even the implied warranty of
+//	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//	GNU General Public License for more details.
+
+//	Commercial licences without many of the obligations of GPL 
+//	are available for a nomial fee at [email protected].
+
+//	You should have received a copy of the GNU General Public License
+//	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#import "CSSPartMatcher.h"
+#import "CSSSelectorPart.h"
+#import "CSSSelectorMatcher.h"
+
+@implementation CSSPartMatcher
+
+@synthesize matchedElement, matchedPartIndex;
+
+-(id)initWithElement:(Element*) anElement selectorMatcher:(CSSSelectorMatcher*)aSelectorMatcher{
+	self = [super init];
+	matchedElement = [anElement retain];
+	selectorMatcher = aSelectorMatcher;
+	return self;
+}
+
+-(void)dealloc{
+//	NSLog(@"pruned: %@", [self description]);
+	[matchedElement release];
+	[matchersForNextPart release];
+	[super dealloc];
+}
+
+/* we don't do this yet...
+ -(void)pruneMatchesForElement: (Element*)anElement{
+	if (!matchersForNextPart) return;
+	for (CSSPartMatcher* match in matchersForNextPart){
+		if ([match scopeElement] == anElement)
+			[matchersForNextPart removeObject: match];
+		else
+			[match pruneMatchesForElement: anElement];
+	}
+}
+*/
+
+-(void)addNextMatch:(Element*)nextElement withIndex:(int)index{
+	CSSPartMatcher* nextMatch = [[CSSPartMatcher alloc] initWithElement: nextElement selectorMatcher: selectorMatcher];
+	nextMatch.matchedPartIndex = index;
+	if (!matchersForNextPart) 
+		matchersForNextPart = [[NSMutableArray alloc] initWithCapacity: 4];
+	[matchersForNextPart addObject: nextMatch];
+	[nextMatch release];
+}
+
+-(BOOL)matchNextElement:(Element*) nextElement forIndex: (int) index{
+	CSSSelectorPart* nextPart = [[selectorMatcher selector] partAtIndex: index];
+	CSSVerb nextVerb = [[selectorMatcher selector] verbAtIndex: index];
+	BOOL verbMatches = NO;
+	if ([nextPart matchesElement: nextElement]){
+		if (nextVerb == CSSVerbAny)
+			verbMatches = YES;
+		else if (nextVerb == CSSVerbDescendant)
+			verbMatches = [nextElement hasAncestor: self.matchedElement];//wasteful to not prune matches as they go out of scope
+		else if (nextVerb == CSSVerbChild)
+			verbMatches = nextElement.parent == self.matchedElement; 
+		else if (nextVerb == CSSVerbSuccessor)
+			verbMatches = nextElement == self.matchedElement.nextSybling; 
+	}
+
+	BOOL completeMatch = verbMatches && (index == [[selectorMatcher selector] countOfParts] - 1);
+
+	if (matchersForNextPart){
+		for (CSSPartMatcher* match in matchersForNextPart){
+			completeMatch = completeMatch || [match matchNextElement: nextElement forIndex: index + 1];
+		}
+	}
+
+	if (!completeMatch && verbMatches)//actually part and verb match
+		[self addNextMatch: nextElement withIndex: index];
+
+	return completeMatch;
+}
+
+-(CSSSelectorPart*)matchedPart{
+	return [[selectorMatcher selector] partAtIndex: matchedPartIndex];
+}
+
+-(NSString*)description{
+	return [NSString stringWithFormat: @"%@ matched %@ -- %i matchersForNextPart", [[self matchedPart] description], [matchedElement description], (matchersForNextPart) ? [matchersForNextPart count] : 0];
+}
+
+@end

AePubReader/Classes/CSSSelector.h

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+//
+//  CSSSelector.h
+//  Thumbprint
+//
+//  Created by Lee Buck on 4/17/09.
+//  Copyright 2009 Blue Bright Ventures. All rights reserved.
+//
+//	This program is free software: you can redistribute it and/or modify
+//	it under the terms of the GNU General Public License as published by
+//	the Free Software Foundation, either version 3 of the License, or
+//	(at your option) any later version.
+
+//	This program is distributed in the hope that it will be useful,
+//	but WITHOUT ANY WARRANTY; without even the implied warranty of
+//	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//	GNU General Public License for more details.
+
+//	Commercial licences without many of the obligations of GPL 
+//	are available for a nomial fee at [email protected].
+
+//	You should have received a copy of the GNU General Public License
+//	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#import <Foundation/Foundation.h>
+#import "Element.h"
+
+@class CSSSelectorMatcher;
+@class CSSSelectorPart;
+
+#define CSSVerbChild @" > "
+#define CSSVerbSuccessor @" + "
+#define CSSVerbDescendant @" "
+#define CSSVerbAny @""
+#define CSSVerb NSString*
+
+/** 
+ *	CSSSelector is responsible for modeling a chain of CSSSelectorParts. For example
+ *	
+ *		body a.link
+ *	
+ *	is a chain of two parts "body" and "a.link"
+ * 
+ *  Parts are joined by "verbs" which correspond to symbols " ", "+", and ">"
+ *	These parts define the relative position of the second part to the first
+ *	Supported parts are:
+ *		space		within - the second part must match an Element within the 
+ *					Element matching the first part
+ *
+ *		>			child - the second part must match an Element whose parent is  
+ *					the Element matching the first part
+ *
+ *		+			successor - the second part must match an Element whose previous   
+ *					sybling was the Element matching the first part
+ */
+
+@interface CSSSelector : NSObject {
+	NSMutableArray* chain;
+}
+-(id)initWithString:(NSString*)string;
+-(NSString*)description;
+
+-(int)countOfParts;
+-(CSSSelectorPart*)partAtIndex:(int)index;
+-(CSSVerb)verbAtIndex:(int)index;
+-(CSSVerb)verbAfterIndex:(int)index;
+
+@end

AePubReader/Classes/CSSSelector.m

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+//
+//  CSSSelector.m
+//  Thumbprint
+//
+//  Created by Lee Buck on 4/17/09.
+//  Copyright 2009 Blue Bright Ventures. All rights reserved.
+//
+//	This program is free software: you can redistribute it and/or modify
+//	it under the terms of the GNU General Public License as published by
+//	the Free Software Foundation, either version 3 of the License, or
+//	(at your option) any later version.
+
+//	This program is distributed in the hope that it will be useful,
+//	but WITHOUT ANY WARRANTY; without even the implied warranty of
+//	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//	GNU General Public License for more details.
+
+//	Commercial licences without many of the obligations of GPL 
+//	are available for a nomial fee at [email protected].
+
+//	You should have received a copy of the GNU General Public License
+//	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#import "CSSSelector.h"
+#import "CSSSelectorPart.h"
+#import "NSString_HTML.h"
+#import "CSSSelectorMatcher.h"
+
+
+@implementation CSSSelector
+
+
+-(id)initWithString:(NSString*)string{
+	CFStringInlineBuffer buffer;
+	CFRange range = CFRangeMake(0, [string length]);
+	CFStringInitInlineBuffer((CFStringRef)string, &buffer, range);
+
+	chain = [[NSMutableArray alloc] initWithCapacity: 10];
+	unichar c;
+	CFIndex index = 0;
+	while (c = skipWhitespace(&buffer, &index)){
+		CSSSelectorPart* part = [[CSSSelectorPart alloc] initWithIndex: &index inBuffer: &buffer];
+		[chain addObject: part];
+		[part release];
+
+		c = skipWhitespace(&buffer, &index);
+		if (!c) break;
+
+		if (c=='+'){
+			[chain addObject: CSSVerbSuccessor];
+			index++;
+		}
+		else if (c=='>'){
+			[chain addObject: CSSVerbChild];
+			index++;
+		}
+		else
+			[chain addObject: CSSVerbDescendant];
+	}
+
+	return self;
+}
+
+-(void)dealloc{
+//	NSLog(@"disposing of %@", [self description]);
+	[chain release];
+	[super dealloc];
+}
+
+-(NSString*)description{
+	NSMutableString* result = [NSMutableString string];
+	for (id item in chain){
+		[result appendString: [item description]];
+	}
+	return result;	
+}
+
+-(int)countOfParts{
+	return ([chain count] + 1) / 2;
+}
+-(CSSSelectorPart*)partAtIndex:(int)index{
+	return [chain objectAtIndex: index * 2];
+}
+
+-(CSSVerb)verbAtIndex:(int)index{
+	return (index > 0) ? [chain objectAtIndex: index * 2 - 1] : CSSVerbAny;
+}
+
+// sometime we need to access the next verb after an index... see scopingElement
+-(CSSVerb)verbAfterIndex:(int)index{
+	return (index < [self countOfParts] - 1) ? [self verbAtIndex: index + 1] : CSSVerbAny;
+}
+
+@end
+
+