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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
*************************************************************************/
#import "OOoMetaDataParser.h"
static NSSet *singleValueXMLElements;
static NSSet *multiValueXMLElements;
static NSDictionary *metaXML2MDIKeys;
@implementation OOoMetaDataParser
+ (void)initialize
{
static BOOL isInitialized = NO;
if (isInitialized == NO) {
//set up the meta elements with only one value
NSMutableSet *temp = [NSMutableSet new];
[temp addObject:@"dc:title"];
[temp addObject:@"dc:description"];
[temp addObject:@"meta:user-defined"];
singleValueXMLElements = [[NSSet setWithSet:temp] retain];
//set up the meta elements that can have more than one value
[temp removeAllObjects];
[temp addObject:@"dc:subject"];
[temp addObject:@"meta:keyword"];
[temp addObject:@"meta:initial-creator"];
[temp addObject:@"dc:creator"];
multiValueXMLElements = [[NSSet setWithSet:temp] retain];
[temp release];
//set up the map to store the values with the correct MDI keys
NSMutableDictionary *tempDict = [NSMutableDictionary new];
[tempDict setObject:(NSString*)kMDItemTitle forKey:@"dc:title"];
[tempDict setObject:(NSString*)kMDItemDescription forKey:@"dc:description"];
[tempDict setObject:(NSString*)kMDItemKeywords forKey:@"dc:subject"];
[tempDict setObject:(NSString*)kMDItemAuthors forKey:@"meta:initial-creator"];
[tempDict setObject:(NSString*)kMDItemAuthors forKey:@"dc:creator"];
[tempDict setObject:(NSString*)kMDItemKeywords forKey:@"meta:keyword"];
[tempDict setObject:@"org_openoffice_opendocument_custominfo1" forKey:@"Info 1"];
[tempDict setObject:@"org_openoffice_opendocument_custominfo2" forKey:@"Info 2"];
[tempDict setObject:@"org_openoffice_opendocument_custominfo3" forKey:@"Info 3"];
[tempDict setObject:@"org_openoffice_opendocument_custominfo4" forKey:@"Info 4"];
metaXML2MDIKeys = [[NSDictionary dictionaryWithDictionary:tempDict] retain];
[tempDict release];
isInitialized = YES;
}
}
- (id)init
{
if ((self = [super init]) != nil) {
shouldReadCharacters = NO;
// currentElement = nil;
textCurrentElement = nil;
return self;
}
return nil;
}
- (void)parseXML:(NSData*)data intoDictionary:(NSMutableDictionary*)dict
{
metaValues = dict;
//NSLog(@"data: %@ %d", data, [data length]);
//init parser settings
shouldReadCharacters = NO;
NSXMLParser *parser = [[NSXMLParser alloc] initWithData:data];
// class 'OOoMetaDataParser' does not implement the 'NSXMLParserDelegate' protocol
// So instead of this:
// [parser setDelegate:self];
// do this:
objc_msgSend(parser, @selector(setDelegate:), self);
[parser setShouldResolveExternalEntities:NO];
[parser parse];
[parser release];
//NSLog(@"finished parsing meta");
}
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName attributes:(NSDictionary *)attributeDict
{
// NSLog(@"<%@>", elementName);
if ([singleValueXMLElements containsObject:elementName] == YES) {
shouldReadCharacters = YES;
} else if ([multiValueXMLElements containsObject:elementName] == YES) {
shouldReadCharacters = YES;
} else {
//we are not interested in this element
shouldReadCharacters = NO;
return;
}
if (shouldReadCharacters == YES) {
textCurrentElement = [NSMutableString new];
isCustom = [elementName isEqualToString:@"meta:user-defined"];
if (isCustom == YES) {
customAttribute = [[attributeDict objectForKey:@"meta:name"] retain];
//NSLog(customAttribute);
}
}
//NSLog(@"start element %@", elementName);
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
// NSLog(@"</%@>", elementName);
if (shouldReadCharacters == YES) {
NSString *mdiName = nil;
if (isCustom == YES) {
mdiName = (NSString*)[metaXML2MDIKeys objectForKey:customAttribute];
} else {
mdiName = (NSString*)[metaXML2MDIKeys objectForKey:elementName];
}
//NSLog(@"mdiName: %@", mdiName);
if (mdiName == nil) {
return;
}
if ([singleValueXMLElements containsObject:elementName] == YES) {
[metaValues setObject:textCurrentElement forKey:mdiName];
} else {
// must be multi-value
NSMutableArray *arr = [metaValues objectForKey:mdiName];
if (arr == nil) {
// we have no array yet, create it
arr = [[NSMutableArray new] autorelease];
// and store it
[metaValues setObject:arr forKey:mdiName];
}
// only store an element once, no need for duplicates
if ([arr containsObject:textCurrentElement] == NO) {
[arr addObject:textCurrentElement];
}
}
// cleanup part 1
[textCurrentElement release];
if (customAttribute != nil) {
[customAttribute release];
}
}
//cleanup part 2
shouldReadCharacters = NO;
isCustom = NO;
}
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
{
// NSLog(@"%@", string);
if (shouldReadCharacters == NO) {
return;
}
// this delegate method might be called several times for a single element,
// so we have to collect the received data
[textCurrentElement appendString:string];
//NSLog(@"chars read: %@", string);
}
- (void)parser:(NSXMLParser *)parser parseErrorOccurred:(NSError *)parseError
{
//NSLog(@"parsing finished with error");
NSLog(@"Error %i, Description: %@, Line: %i, Column: %i", [parseError code],
[[parser parserError] localizedDescription], [parser lineNumber],
[parser columnNumber]);
}
@end
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