checkNSFileVersionDatabase.m

#import <Foundation/Foundation.h>

int main(int argc, const char * argv[])
{
	@autoreleasepool
	{
		BOOL broken = FALSE;
		NSDirectoryEnumerator *enumerator = [[NSFileManager defaultManager] enumeratorAtURL:[NSURL fileURLWithPath:@"~".stringByExpandingTildeInPath]
																 includingPropertiesForKeys:@[NSURLIsRegularFileKey, NSURLIsPackageKey]
																					options:(NSDirectoryEnumerationOptions)0 errorHandler:nil];

		for (NSURL *file in enumerator)
		{
			@autoreleasepool
			{
				NSError *error;
				NSNumber *isRegularFile = nil, *isPackage;


				if (![file getResourceValue:&isRegularFile forKey:NSURLIsRegularFileKey error:&error] ||
					![file getResourceValue:&isPackage forKey:NSURLIsPackageKey error:&error])
				{
					NSLog(@"Warning: could not get resource values for file!  %@ %@", file, error);
				}
				else if (isRegularFile.boolValue || isPackage.boolValue)
				{
					NSArray *otherVersions = [NSFileVersion otherVersionsOfItemAtURL:file];

					for (NSFileVersion *ov in otherVersions)
					{
						NSString *path = ov.URL.path;

						if (!path)
							NSLog(@"Warning: file (%@) version (%@) is NIL: localizedName: %@ localzesNameOfSavingComputer: %@ modificationDate: %@ persistentIdentifier: %@ conflict: %i resolved: %i discardable: %i hasLocalContents: %i hasThumbnail: %i\n", file, ov.description, ov.localizedName, ov. localizedNameOfSavingComputer,  ov.modificationDate, ov.persistentIdentifier, ov.conflict, ov.resolved, ov.discardable, ov.hasLocalContents, ov.hasThumbnail);
						else if (path &&
							(![[NSFileManager defaultManager] fileExistsAtPath:path] ||
							![[NSFileManager defaultManager] isReadableFileAtPath:path]))
						{
							NSLog(@"Error: file (%@) version (%@) NOT accessible (%@): localizedName: %@ localzesNameOfSavingComputer: %@ modificationDate: %@ persistentIdentifier: %@ conflict: %i resolved: %i discardable: %i hasLocalContents: %i hasThumbnail: %i\n", file, ov.description, path, ov.localizedName, ov. localizedNameOfSavingComputer,  ov.modificationDate, ov.persistentIdentifier, ov.conflict, ov.resolved, ov.discardable, ov.hasLocalContents, ov.hasThumbnail);
							broken = TRUE;
						}
					}
				}
			}
		}


	 if (broken)
		 NSLog(@"Error: NSFileVersion database is corrupted ;-(");
	 else
		 NSLog(@"Info: NSFileVersion database is fine ;-)");
	}
	return 0;
}