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SUAppcastItem.m
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SUAppcastItem.m
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//
// SUAppcastItem.m
// Sparkle
//
// Created by Andy Matuschak on 3/12/06.
// Copyright 2006 Andy Matuschak. All rights reserved.
//
#import "SUUpdater.h"
#import "SUAppcast.h"
#import "SUAppcastItem.h"
#import "SUVersionComparisonProtocol.h"
#import "SUAppcastItem.h"
#import "SULog.h"
@interface SUAppcastItem ()
@property (copy, readwrite) NSString *title;
@property (copy, readwrite) NSDate *date;
@property (copy, readwrite) NSString *itemDescription;
@property (retain, readwrite) NSURL *releaseNotesURL;
@property (copy, readwrite) NSString *DSASignature;
@property (copy, readwrite) NSString *minimumSystemVersion;
@property (copy, readwrite) NSString *maximumSystemVersion;
@property (retain, readwrite) NSURL *fileURL;
@property (copy, readwrite) NSString *versionString;
@property (copy, readwrite) NSString *displayVersionString;
@property (copy, readwrite) NSDictionary *deltaUpdates;
@property (retain, readwrite) NSURL *infoURL;
@end
@implementation SUAppcastItem
@synthesize date;
@synthesize deltaUpdates;
@synthesize displayVersionString;
@synthesize DSASignature;
@synthesize fileURL;
@synthesize infoURL;
@synthesize itemDescription;
@synthesize maximumSystemVersion;
@synthesize minimumSystemVersion;
@synthesize releaseNotesURL;
@synthesize title;
@synthesize versionString;
- (BOOL)isDeltaUpdate
{
return [[propertiesDictionary objectForKey:@"enclosure"] objectForKey:@"sparkle:deltaFrom"] != nil;
}
- (BOOL)isCriticalUpdate
{
return [[propertiesDictionary objectForKey:@"sparkle:tags"] containsObject:@"sparkle:criticalUpdate"];
}
- initWithDictionary:(NSDictionary *)dict
{
return [self initWithDictionary:dict failureReason:nil];
}
- initWithDictionary:(NSDictionary *)dict failureReason:(NSString**)error
{
self = [super init];
if (self)
{
id enclosure = [dict objectForKey:@"enclosure"];
// 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 == nil )
newVersion = [dict objectForKey:@"sparkle:version"]; // UK 2007-08-31 Get version from the item, in case it's a download-less item (i.e. paid upgrade).
if (newVersion == nil) // no sparkle:version attribute anywhere?
{
// 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];
}
if(!newVersion )
{
if (error)
*error = @"Feed item lacks sparkle:version attribute, and version couldn't be deduced from file name (would have used last component of a file name like AppName_1.3.4.zip)";
[self release];
return nil;
}
propertiesDictionary = [[NSMutableDictionary alloc] initWithDictionary:dict];
self.title = [dict objectForKey:@"title"];
self.date = [dict objectForKey:@"pubDate"];
self.itemDescription = [dict objectForKey:@"description"];
NSString* theInfoURL = [dict objectForKey:@"link"];
if( theInfoURL )
{
if( ![theInfoURL isKindOfClass: [NSString class]] )
SULog(@"SUAppcastItem -initWithDictionary: Info URL is not of valid type.");
else
self.infoURL = [NSURL URLWithString:theInfoURL];
}
// Need an info URL or an enclosure URL. Former to show "More Info"
// page, latter to download & install:
if( !enclosure && !theInfoURL )
{
if (error)
*error = @"No enclosure in feed item";
[self release];
return nil;
}
NSString* enclosureURLString = [enclosure objectForKey:@"url"];
if( !enclosureURLString && !theInfoURL )
{
if (error)
*error = @"Feed item's enclosure lacks URL";
[self release];
return nil;
}
if( enclosureURLString ) {
NSString *fileURLString = [[enclosureURLString stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
self.fileURL = [NSURL URLWithString:fileURLString];
}
if( enclosure )
self.DSASignature = [enclosure objectForKey:@"sparkle:dsaSignature"];
self.versionString = newVersion;
self.minimumSystemVersion = [dict objectForKey:@"sparkle:minimumSystemVersion"];
self.maximumSystemVersion = [dict objectForKey:@"sparkle:maximumSystemVersion"];
NSString *shortVersionString = [enclosure objectForKey:@"sparkle:shortVersionString"];
if (nil == shortVersionString)
shortVersionString = [dict objectForKey:@"sparkle:shortVersionString"]; // fall back on the <item>
if (shortVersionString)
self.displayVersionString = shortVersionString;
else
self.displayVersionString = [self versionString];
// Find the appropriate release notes URL.
if ([dict objectForKey:@"sparkle:releaseNotesLink"])
self.releaseNotesURL = [NSURL URLWithString:[dict objectForKey:@"sparkle:releaseNotesLink"]];
else if ([self.itemDescription hasPrefix:@"http://"] || [self.itemDescription hasPrefix:@"https://"]) // if the description starts with http:// or https:// use that.
self.releaseNotesURL = [NSURL URLWithString:self.itemDescription];
else
self.releaseNotesURL = nil;
if ([dict objectForKey:@"deltas"])
{
NSMutableDictionary *deltas = [NSMutableDictionary dictionary];
NSArray *deltaDictionaries = [dict objectForKey:@"deltas"];
for (NSDictionary *deltaDictionary in [deltaDictionaries objectEnumerator]) {
NSMutableDictionary *fakeAppCastDict = [dict mutableCopy];
[fakeAppCastDict removeObjectForKey:@"deltas"];
[fakeAppCastDict setObject:deltaDictionary forKey:@"enclosure"];
SUAppcastItem *deltaItem = [[[self class] alloc] initWithDictionary:fakeAppCastDict];
[fakeAppCastDict release];
[deltas setObject:deltaItem forKey:[deltaDictionary objectForKey:@"sparkle:deltaFrom"]];
[deltaItem release];
}
self.deltaUpdates = deltas;
}
}
return self;
}
- (void)dealloc
{
self.title = nil;
self.date = nil;
self.itemDescription = nil;
self.releaseNotesURL = nil;
self.DSASignature = nil;
self.minimumSystemVersion = nil;
self.fileURL = nil;
self.versionString = nil;
self.displayVersionString = nil;
self.infoURL = nil;
[propertiesDictionary release];
[super dealloc];
}
- (NSDictionary *)propertiesDictionary
{
return propertiesDictionary;
}
@end