//
//  KSXMLAttributes.m
//  Sandvox
//
//  Created by Mike on 19/11/2010.
//  Copyright 2010 Karelia Software. All rights reserved.
//

#import "KSXMLAttributes.h"

#import "KSXMLWriter.h"


@implementation KSXMLAttributes

#pragma mark Lifecycle

- (id)init;
{
  self = [super init];
  if (self != nil) {
    _attributes = [[NSMutableArray alloc] initWithCapacity:2];
  }
  return self;
}

- (id)initWithXMLAttributes:(KSXMLAttributes *)info;
{
  self = [super init];    // call super, so _attributes is still nil
  
  _attributes = [info->_attributes mutableCopy];
  
  return self;
}


- (NSDictionary *)attributesAsDictionary;
{
  NSMutableDictionary *result = [NSMutableDictionary dictionary];
  
  for (NSUInteger i = 0; i < [_attributes count]; i+=2)
  {
    NSString *attribute = [_attributes objectAtIndex:i];
    NSString *value = [_attributes objectAtIndex:i+1];
    [result setObject:value forKey:attribute];
  }
  
  return result;
}

- (void)setAttributesAsDictionary:(NSDictionary *)dictionary;
{
  for (NSString *anAttribute in dictionary)
  {
    [self addAttribute:anAttribute value:[dictionary objectForKey:anAttribute]];
  }
}

- (BOOL)hasAttributes;
{
  return [_attributes count];
}

- (void)addAttribute:(NSString *)attribute value:(id)value;
{
  NSParameterAssert(value);
  [_attributes addObject:attribute];
  [_attributes addObject:value];
}

- (void)close;  // sets name to nil and removes all attributes
{
  [_attributes removeAllObjects];
}

#pragma mark NSCopying

- (id)copyWithZone:(NSZone *)zone;
{
  return [[[KSXMLAttributes class] alloc] initWithXMLAttributes:self];
}

#pragma mark Description

- (NSString *)description;
{
  NSMutableString *result = [NSMutableString stringWithString:[super description]];
  
  KSXMLWriter *writer = [[KSXMLWriter alloc] initWithOutputWriter:result];
  [writer writeString:@" "];
  
  [writer startElement:@"" attributes:[self attributesAsDictionary]];
  [writer endElement];
  
  
  return result;
}

@end