I m目前致力于将目标C中写成的一部法典转换成迅速,我碰到了一条路障。 给我带来麻烦的部分涉及从书记数据中提取财产。

NSMutableArray *extractItems(NSString *path)
{
    NSDictionary *data = [NSDictionary dictionaryWithContentsOfFile:path];
    NSMutableArray* items = [[NSMutableArray alloc] init];
    NSData* bookmark = nil;
    NSDictionary* properties = nil;
    
    // Extract items
    for(id object in data[@"$objects"])
    {
        // Reset bookmark
        bookmark = nil;
        
        // Extract bookmark data
        if([object isKindOfClass:[NSData class]] == YES)
        {
            bookmark = object;
        }
        
        // Extract bookmark from dictionary
        if([object isKindOfClass:[NSDictionary class]] == YES)
        {
            bookmark = [object objectForKey:@"NS.data"];
        }
        
        // Skip if no bookmark
        if(bookmark == nil)
        {
            continue;
        }
        
        // Extract properties
        properties = [NSURL resourceValuesForKeys:@[@"AllPropertiesKey"] fromBookmarkData:bookmark][@"AllPropertiesKey"];
        if(properties == nil)
        {
            // Skip this item
            continue;
        }
        
        // Create item
        Item *item = [[Item alloc] init];
        item.path = path;
        item.executable = properties[@"_NSURLPathKey"];
        item.type = [NSNumber numberWithInt:ItemType];
        item.user = extractUserFromPath(path);
        item.content = nil;
        
        // Use name from bundle or NSURLNameKey
        item.name = [NSBundle bundleWithPath:item.executable].infoDictionary[@"CFBundleName"];
        if(item.name.length == 0)
        {
            item.name = properties[@"NSURLNameKey"];
        }
        
        // Skip if there are issues
        if (item.name == nil || item.executable == nil)
        {
            continue;
        }
        
        // Add item
        [items addObject:item];
    }
    
    return items;
}

面临的挑战Im涉及利用资源ValuesForKeys方法开采财产,然后在其中使用NSURLBookmark AllpertiesKey dictionary。