~andymatuschak/sparkle/main

//

//  SUStatusChecker.m

//  Sparkle

//

//  Created by Evan Schoenberg on 7/6/06.

//

 

#import "SUStatusChecker.h"

#import "SUAppcast.h"

#import "SUAppcastItem.h"

 

@interface SUStatusChecker (Private)

- (id)initForDelegate:(id<SUStatusCheckerDelegate>)inDelegate;

- (void)checkForUpdatesAndNotify:(BOOL)verbosity;

- (BOOL)newVersionAvailable;

@end;

 

@implementation SUStatusChecker

 

+ (SUStatusChecker *)statusCheckerForDelegate:(id<SUStatusCheckerDelegate>)inDelegate;

{

        SUStatusChecker *statusChecker = [[self alloc] initForDelegate:inDelegate];

 

        return [statusChecker autorelease];

}

 

- (id)initForDelegate:(id<SUStatusCheckerDelegate>)inDelegate

{

        [super init];

 

        scDelegate = [inDelegate retain];

 

        [self checkForUpdatesAndNotify:NO];

 

        return self;

}

 

- (void)dealloc

{

        [scDelegate release]; scDelegate = nil;

        

        [super dealloc];

}

 

- (void)applicationDidFinishLaunching:(NSNotification *)note

{

        //Take no action when the application finishes launching

}

 

- (void)appcastDidFinishLoading:(SUAppcast *)ac

{

        @try

        {

                if (!ac) { [NSException raise:@"SUAppcastException" format:@"Couldn't get a valid appcast from the server."]; }

                

                updateItem = [[ac newestItem] retain];

                [ac autorelease];

                

                if (![updateItem fileVersion])

                {

                        [NSException raise:@"SUAppcastException" format:@"Can't extract a version string from the appcast feed. The filenames should look like YourApp_1.5.tgz, where 1.5 is the version number."];

                }

 

                [scDelegate statusChecker:self

                                         foundVersion:[updateItem fileVersion]

                                         isNewVersion:[self newVersionAvailable]];

        }

        @catch (NSException *e)

        {

                NSLog([e reason]);

 

                [scDelegate statusChecker:self foundVersion:nil isNewVersion:NO];       

        }

 

        updateInProgress = NO;

}

 

@end