handle a specific http + domain as a local resource

YappPhoneGapLocalURLProtocol.m

#import "YappPhoneGapLocalURLProtocol.h"

#ifdef PHONEGAP_FRAMEWORK
#import <PhoneGap/PhoneGapDelegate.h>
#else
#import "PhoneGapDelegate.h"
#endif

@interface YappPhoneGapLocalURLProtocol () <NSURLConnectionDelegate, NSURLConnectionDataDelegate>
@property (nonatomic, retain) NSURLConnection *connection;
@end

@implementation YappPhoneGapLocalURLProtocol

@synthesize connection = connection_;

-(void)dealloc
{
    [self.connection cancel];
    self.connection = nil;
    [super dealloc];
}

+ (BOOL)canInitWithRequest:(NSURLRequest *)request
{
    NSURL *url = [request URL];
    if ([[url scheme] isEqualToString:@"http"] &&
        [[url host] isEqualToString:@"phonegap.yapp.us"]) {
        return YES;
    }
    return NO;
}

+ (NSURLRequest *)canonicalRequestForRequest:(NSURLRequest *)request
{
    return request;
}

- (void)startLoading
{
    NSLog(@"YappPhoneGapLocalURLProtocol startLoading %@", [self.request URL]);
    NSString *path = [[self.request URL] path];
    NSString *resourcePath = [PhoneGapDelegate pathForResource:path];
    NSURL *resourceURL = [NSURL fileURLWithPath:resourcePath];
    NSURLRequest *resouceRequest = [NSURLRequest requestWithURL:resourceURL];
    self.connection = [NSURLConnection connectionWithRequest:resouceRequest delegate:self];
}

- (void)stopLoading
{
    [self.connection cancel];
}

- (NSCachedURLResponse *)connection:(NSURLConnection *)connection willCacheResponse:(NSCachedURLResponse *)cachedResponse
{
    return cachedResponse;
}

- (NSURLRequest *)connection:(NSURLConnection *)connection willSendRequest:(NSURLRequest *)request redirectResponse:(NSURLResponse *)response
{
    return request;
}

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
    [self.client URLProtocol:self didReceiveResponse:response cacheStoragePolicy:NSURLCacheStorageNotAllowed];
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
    [self.client URLProtocol:self didLoadData:data];
}

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
    [self.client URLProtocol:self didFailWithError:error];
    self.connection = nil;
}


- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
    [self.client URLProtocolDidFinishLoading:self];
    self.connection = nil;
}
@end