205 lines
7.1 KiB
Objective-C
205 lines
7.1 KiB
Objective-C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <objc/objc-runtime.h>
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#import "OOoMetaDataParser.h"
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static NSSet *singleValueXMLElements;
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static NSSet *multiValueXMLElements;
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static NSDictionary *metaXML2MDIKeys;
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@implementation OOoMetaDataParser
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+ (void)initialize
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{
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static BOOL isInitialized = NO;
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if (isInitialized == NO) {
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//set up the meta elements with only one value
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NSMutableSet *temp = [NSMutableSet new];
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//FIXME these should use namespace URIs and not prefixes
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[temp addObject:@"dc:title"];
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[temp addObject:@"dc:description"];
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[temp addObject:@"meta:user-defined"];
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singleValueXMLElements = [[NSSet setWithSet:temp] retain];
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//set up the meta elements that can have more than one value
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[temp removeAllObjects];
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[temp addObject:@"dc:subject"];
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[temp addObject:@"meta:keyword"];
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[temp addObject:@"meta:initial-creator"];
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[temp addObject:@"dc:creator"];
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multiValueXMLElements = [[NSSet setWithSet:temp] retain];
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[temp release];
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//set up the map to store the values with the correct MDI keys
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NSMutableDictionary *tempDict = [NSMutableDictionary new];
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[tempDict setObject:(NSString*)kMDItemTitle forKey:@"dc:title"];
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[tempDict setObject:(NSString*)kMDItemDescription forKey:@"dc:description"];
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[tempDict setObject:(NSString*)kMDItemKeywords forKey:@"dc:subject"];
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[tempDict setObject:(NSString*)kMDItemAuthors forKey:@"meta:initial-creator"];
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[tempDict setObject:(NSString*)kMDItemAuthors forKey:@"dc:creator"];
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[tempDict setObject:(NSString*)kMDItemKeywords forKey:@"meta:keyword"];
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[tempDict setObject:@"org_openoffice_opendocument_custominfo1" forKey:@"Info 1"];
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[tempDict setObject:@"org_openoffice_opendocument_custominfo2" forKey:@"Info 2"];
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[tempDict setObject:@"org_openoffice_opendocument_custominfo3" forKey:@"Info 3"];
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[tempDict setObject:@"org_openoffice_opendocument_custominfo4" forKey:@"Info 4"];
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metaXML2MDIKeys = [[NSDictionary dictionaryWithDictionary:tempDict] retain];
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[tempDict release];
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isInitialized = YES;
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}
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}
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- (id)init
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{
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if ((self = [super init]) != nil) {
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shouldReadCharacters = NO;
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textCurrentElement = nil;
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return self;
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}
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return nil;
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}
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- (void)parseXML:(NSData*)data intoDictionary:(NSMutableDictionary*)dict
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{
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metaValues = dict;
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//NSLog(@"data: %@ %d", data, [data length]);
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//init parser settings
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shouldReadCharacters = NO;
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NSXMLParser *parser = [[NSXMLParser alloc] initWithData:data];
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[parser setDelegate:self];
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[parser setShouldResolveExternalEntities:NO];
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[parser parse];
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[parser release];
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//NSLog(@"finished parsing meta");
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}
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- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName attributes:(NSDictionary *)attributeDict
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{
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(void) parser; // unused
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(void) namespaceURI; // FIXME this should not be ignored but should be used
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// instead of meta: prefix in the comparison below!
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(void) qualifiedName; // unused
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// NSLog(@"<%@>", elementName);
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if ([singleValueXMLElements containsObject:elementName] == YES) {
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shouldReadCharacters = YES;
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} else if ([multiValueXMLElements containsObject:elementName] == YES) {
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shouldReadCharacters = YES;
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} else {
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//we are not interested in this element
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shouldReadCharacters = NO;
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return;
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}
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if (shouldReadCharacters == YES) {
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textCurrentElement = [NSMutableString new];
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isCustom = [elementName isEqualToString:@"meta:user-defined"];
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if (isCustom == YES) {
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customAttribute = [[attributeDict objectForKey:@"meta:name"] retain];
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//NSLog(customAttribute);
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}
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}
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//NSLog(@"start element %@", elementName);
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}
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- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
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{
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(void) parser; // unused
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(void) namespaceURI; // unused
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(void) qName; // unused
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// NSLog(@"</%@>", elementName);
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if (shouldReadCharacters == YES) {
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NSString *mdiName = nil;
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if (isCustom == YES) {
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mdiName = (NSString*)[metaXML2MDIKeys objectForKey:customAttribute];
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} else {
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mdiName = (NSString*)[metaXML2MDIKeys objectForKey:elementName];
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}
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//NSLog(@"mdiName: %@", mdiName);
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if (mdiName == nil) {
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return;
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}
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if ([singleValueXMLElements containsObject:elementName] == YES) {
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[metaValues setObject:textCurrentElement forKey:mdiName];
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} else {
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// must be multi-value
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NSMutableArray *arr = [metaValues objectForKey:mdiName];
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if (arr == nil) {
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// we have no array yet, create it
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arr = [[NSMutableArray new] autorelease];
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// and store it
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[metaValues setObject:arr forKey:mdiName];
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}
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// only store an element once, no need for duplicates
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if ([arr containsObject:textCurrentElement] == NO) {
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[arr addObject:textCurrentElement];
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}
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}
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// cleanup part 1
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[textCurrentElement release];
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if (isCustom == YES) {
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[customAttribute release];
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}
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}
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//cleanup part 2
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shouldReadCharacters = NO;
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isCustom = NO;
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}
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- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
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{
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(void) parser; // unused
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// NSLog(@"%@", string);
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if (shouldReadCharacters == NO) {
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return;
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}
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// this delegate method might be called several times for a single element,
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// so we have to collect the received data
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[textCurrentElement appendString:string];
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//NSLog(@"chars read: %@", string);
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}
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- (void)parser:(NSXMLParser *)parser parseErrorOccurred:(NSError *)parseError
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{
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//NSLog(@"parsing finished with error");
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NSLog(@"Error %li, Description: %@, Line: %li, Column: %li", (long) [parseError code],
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[[parser parserError] localizedDescription], (long) [parser lineNumber],
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(long) [parser columnNumber]);
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}
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@end
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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