root/branches/perian-1.1/Update Checker Sources/SUAppcastItem.m

//
//  SUAppcastItem.m
//  Sparkle
//
//  Created by Andy Matuschak on 3/12/06.
//  Copyright 2006 Andy Matuschak. All rights reserved.
//

#import "SUAppcastItem.h"


@implementation SUAppcastItem

- initWithDictionary:(NSDictionary *)dict
{
        [super init];
        [self setTitle:[dict objectForKey:@"title"]];
        [self setDate:[dict objectForKey:@"pubDate"]];
        [self setDescription:[dict objectForKey:@"description"]];
        
        id enclosure = [dict objectForKey:@"enclosure"];
        [self setDSASignature:[enclosure objectForKey:@"sparkle:dsaSignature"]];
        [self setMD5Sum:[enclosure objectForKey:@"sparkle:md5Sum"]];
        
        [self setFileURL:[NSURL URLWithString:[[enclosure objectForKey:@"url"] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]];
        
        // Find the appropriate release notes URL.
        if ([dict objectForKey:@"sparkle:releaseNotesLink"])
        {
                [self setReleaseNotesURL:[NSURL URLWithString:[dict objectForKey:@"sparkle:releaseNotesLink"]]];
        }
        else if ([[self description] hasPrefix:@"http://"]) // if the description starts with http://, use that.
        {
                [self setReleaseNotesURL:[NSURL URLWithString:[self description]]];
        }
        else
        {
                [self setReleaseNotesURL:nil];
        }
        
        NSString *minVersion = [dict objectForKey:@"sparkle:minimumSystemVersion"];
        if(minVersion)
                [self setMinimumSystemVersion:minVersion];
        else
                [self setMinimumSystemVersion:@"10.3.0"];//sparkle doesn't run on 10.2-, so we don't have to worry about it
        
        // Try to find a version string.
        // Finding the new version number from the RSS feed is a little bit hacky. There are two ways:
        // 1. A "sparkle:version" attribute on the enclosure tag, an extension from the RSS spec.
        // 2. If there isn't a version attribute, Sparkle will parse the path in the enclosure, expecting
        //    that it will look like this: http://something.com/YourApp_0.5.zip. It'll read whatever's between the last
        //    underscore and the last period as the version number. So name your packages like this: APPNAME_VERSION.extension.
        //    The big caveat with this is that you can't have underscores in your version strings, as that'll confuse Sparkle.
        //    Feel free to change the separator string to a hyphen or something more suited to your needs if you like.
        NSString *newVersion = [enclosure objectForKey:@"sparkle:version"];
        if (!newVersion) // no sparkle:version attribute
        {
                // Separate the url by underscores and take the last component, as that'll be closest to the end,
                // then we remove the extension. Hopefully, this will be the version.
                NSArray *fileComponents = [[enclosure objectForKey:@"url"] componentsSeparatedByString:@"_"];
                if ([fileComponents count] > 1)
                        newVersion = [[fileComponents lastObject] stringByDeletingPathExtension];
        }
        [self setFileVersion:newVersion];
        
        NSString *shortVersionString = [enclosure objectForKey:@"sparkle:shortVersionString"];
        if (shortVersionString)
        {
                if (![[self fileVersion] isEqualToString:shortVersionString])
                        shortVersionString = [shortVersionString stringByAppendingFormat:@"/%@", [self fileVersion]];
                [self setVersionString:shortVersionString];
        }
        else
                [self setVersionString:[self fileVersion]];
        
        return self;
}

// Attack of accessors!

- (NSString *)title { return [[title retain] autorelease]; }

- (void)setTitle:(NSString *)aTitle
{
    [title release];
    title = [aTitle copy];
}


- (NSDate *)date { return [[date retain] autorelease]; }

- (void)setDate:(NSDate *)aDate
{
    [date release];
    date = [aDate copy];
}


- (NSString *)description { return [[description retain] autorelease]; }

- (void)setDescription:(NSString *)aDescription
{
    [description release];
    description = [aDescription copy];
}


- (NSURL *)releaseNotesURL { return [[releaseNotesURL retain] autorelease]; }

- (void)setReleaseNotesURL:(NSURL *)aReleaseNotesURL
{
    [releaseNotesURL release];
    releaseNotesURL = [aReleaseNotesURL copy];
}


- (NSString *)DSASignature { return [[DSASignature retain] autorelease]; }

- (void)setDSASignature:(NSString *)aDSASignature
{
    [DSASignature release];
    DSASignature = [aDSASignature copy];
}


- (NSString *)MD5Sum { return [[MD5Sum retain] autorelease]; }

- (void)setMD5Sum:(NSString *)aMD5Sum
{
    [MD5Sum release];
    MD5Sum = [aMD5Sum copy];
}


- (NSURL *)fileURL { return [[fileURL retain] autorelease]; }

- (void)setFileURL:(NSURL *)aFileURL
{
    [fileURL release];
    fileURL = [aFileURL copy];
}


- (NSString *)fileVersion { return [[fileVersion retain] autorelease]; }

- (void)setFileVersion:(NSString *)aFileVersion
{
    [fileVersion release];
    fileVersion = [aFileVersion copy];
}


- (NSString *)versionString { return [[versionString retain] autorelease]; }

- (void)setVersionString:(NSString *)aVersionString
{
    [versionString release];
    versionString = [aVersionString copy];
}


- (NSString *)minimumSystemVersion { return [[minimumSystemVersion retain] autorelease]; }
- (void)setMinimumSystemVersion:(NSString *)systemVersionString
{
        if(minimumSystemVersion)
                [minimumSystemVersion autorelease];
        minimumSystemVersion = systemVersionString;
}


- (void)dealloc
{
    [self setTitle:nil];
    [self setDate:nil];
    [self setDescription:nil];
    [self setReleaseNotesURL:nil];
    [self setDSASignature:nil];
    [self setMD5Sum:nil];
    [self setFileURL:nil];
    [self setFileVersion:nil];
        [self setVersionString:nil];
    [super dealloc];
}

@end