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//
// SimpleKMLPoint.m
//
// Created by Justin R. Miller on 6/29/10.
// Copyright 2010, Code Sorcery Workshop, LLC and Development Seed, Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// * Neither the names of Code Sorcery Workshop, LLC or Development Seed,
// Inc., nor the names of its contributors may be used to endorse or
// promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
// ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
#import "SimpleKMLPoint.h"
@implementation SimpleKMLPoint
- (id)initWithXMLNode:(CXMLNode *)node sourceURL:sourceURL error:(NSError **)error
{
self = [super initWithXMLNode:node sourceURL:sourceURL error:error];
if (self != nil)
{
location = nil;
for (CXMLNode *child in [node children])
{
if ([[child name] isEqualToString:@"coordinates"])
{
NSString *coordinatesString = [[child stringValue] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
// coordinates should not have whitespace
//
if ([[coordinatesString componentsSeparatedByString:@" "] count] > 1)
{
NSDictionary *userInfo = [NSDictionary dictionaryWithObject:@"Improperly formed KML (Point coordinates have whitespace)"
forKey:NSLocalizedFailureReasonErrorKey];
if (error)
*error = [NSError errorWithDomain:SimpleKMLErrorDomain code:SimpleKMLParseError userInfo:userInfo];
return nil;
}
NSArray *parts = [coordinatesString componentsSeparatedByString:@","];
// there should be longitude, latitude, and optionally, altitude
//
if ([parts count] < 2 || [parts count] > 3)
{
NSDictionary *userInfo = [NSDictionary dictionaryWithObject:@"Improperly formed KML (Invalid number of Point coordinates)"
forKey:NSLocalizedFailureReasonErrorKey];
if (error)
*error = [NSError errorWithDomain:SimpleKMLErrorDomain code:SimpleKMLParseError userInfo:userInfo];
return nil;
}
double longitude = [[parts objectAtIndex:0] doubleValue];
double latitude = [[parts objectAtIndex:1] doubleValue];
// there should be valid values for latitude & longitude
//
if (longitude < -180 || longitude > 180 || latitude < -90 || latitude > 90)
{
NSDictionary *userInfo = [NSDictionary dictionaryWithObject:@"Improperly formed KML (Invalid Point coordinates values)"
forKey:NSLocalizedFailureReasonErrorKey];
if (error)
*error = [NSError errorWithDomain:SimpleKMLErrorDomain code:SimpleKMLParseError userInfo:userInfo];
return nil;
}
location = [[CLLocation alloc] initWithLatitude:latitude longitude:longitude];
}
}
if ( ! location)
{
NSDictionary *userInfo = [NSDictionary dictionaryWithObject:@"Improperly formed KML (Point has no coordinates)"
forKey:NSLocalizedFailureReasonErrorKey];
if (error)
*error = [NSError errorWithDomain:SimpleKMLErrorDomain code:SimpleKMLParseError userInfo:userInfo];
return nil;
}
}
return self;
}
- (void)dealloc
{
[location release];
[super dealloc];
}
#pragma mark -
- (CLLocationCoordinate2D)coordinate
{
return location.coordinate;
}
@end
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