#import <Foundation/NSObject.h>

#define PREF_KEY_TAR @"TarExecutable"
#define PREF_KEY_ZIP @"ZipExecutable"
#define PREF_KEY_SEVEN_ZIP @"7ZipExecutable"
#define PREF_KEY_RAR @"RarExecutable"
#define PREF_KEY_LHA @"LhaExecutable"
#define PREF_KEY_LZX @"LzxExecutable"
#define PREF_KEY_GZIP @"GzipExecutable"
#define PREF_KEY_BSD_TAR @"BSDTar"
#define PREF_KEY_OPEN_DIR @"LastOpenDirectory"
#define PREF_KEY_EXTRACT_DIR @"LastExtractDirectory"
#define PREF_KEY_DEFAULT_OPEN_APP @"DefaultOpenApp"

@interface Preferences : NSObject
{
}

+ (void)usePreferences:(NSDictionary *)newPrefs;

/**
 * Default accessors. These methods try to find the executable but return
 * <code>nil</code> if nothing could be found.
 */
+ (NSString *)tarExecutable;
+ (NSString *)zipExecutable;
+ (NSString *)sevenZipExecutable;
+ (NSString *)rarExecutable;
+ (NSString *)lhaExecutable;
+ (NSString *)lzxExecutable;
+ (NSString *)gzipExecutable;

/**
 * Setters for the various executables. All expect a full path to the executable and raise 
 * exceptions if a wrong value was specified.
 */
+ (void)setTarExecutable:(NSString *)newTar;
+ (void)setZipExecutable:(NSString *)newZip;
+ (void)setSevenZipExecutable:(NSString *)new7zip;
+ (void)setRarExecutable:(NSString *)newRar;
+ (void)setLhaExecutable:(NSString *)newLha;
+ (void)setLzxExecutable:(NSString *)newLzx;
+ (void)setGzipExecutable:(NSString *)newGzip;

+ (BOOL)isBsdTar;
+ (void)setIsBsdTar:(BOOL)flag;

+ (NSString *)lastOpenDirectory;
+ (void)setLastOpenDirectory:(NSString *)path;

+ (NSString *)lastExtractDirectory;
+ (void)setLastExtractDirectory:(NSString *)path;

+ (NSString *)compressionArgumentForFile:(NSString *)fileName;
+ (NSString *)defaultOpenApp;
+ (void)setDefaultOpenApp:(NSString *)path;

+ (void)save;
		
@end