gistfile1.m

- (NSDictionary *)infoRecord {
    NSString *path = [self validSingleFilePath];
    if (!path)
        return nil;

    NSDictionary *dict;
    if (dict = [self objectForCache:@"QSItemInfoRecord"])
        return dict;

	/* Try to get information for this file */
    LSItemInfoRecord record;
    OSStatus status = LSCopyItemInfoForURL((CFURLRef)[NSURL fileURLWithPath:path], kLSRequestAllInfo, &record);
    if (status) {
        NSLog(@"LSCopyItemInfoForURL error: %ld", (long)status);
        return nil;
    }

	NSString *uti = QSUTIForExtensionOrType((NSString *)record.extension, record.filetype);
    NSString *extension = [(NSString *)record.extension copy];
    
    /* local or network volume? does it support Trash? */
    struct statfs sfsb;
    statfs([path UTF8String], &sfsb);
    NSString *device = [NSString stringWithCString:sfsb.f_mntfromname encoding:NSUTF8StringEncoding];
    BOOL isLocal = [device hasPrefix:@"/dev/"];
    
	/* Now build a dictionary with that record */
	NSMutableDictionary *tempDict = [NSMutableDictionary dictionaryWithObjectsAndKeys:
			[NSNumber numberWithUnsignedInt:record.flags], @"flags",
			[NSValue valueWithOSType:record.filetype],     @"filetype",
			[NSValue valueWithOSType:record.creator],      @"creator",
			[NSNumber numberWithBool:record.flags & kLSItemInfoIsApplication, @"isApplication".
            [NSNumber numberWithBool:isLocal],             @"localVolume",
			nil];
    if (uti) {
        [tempDict setObject:uti forKey:@"uti"];
    }
    if (extension) {
        [tempDict setObject:extension forKey:@"extension"];
    }
    dict = [NSDictionary dictionaryWithDictionary:tempDict];
	/* Release the file's extension if one was returned */
	if (record.extension)
		CFRelease(record.extension);

    [self setObject:dict forCache:@"QSItemInfoRecord"];
    return dict;
}


- (BOOL)isApplication {
	NSDictionary *infoRecord = [self objectForCache:@"QSItemInfoRecord"];
	if(!infoRecord) {
		BOOL isApp = [NFileManager … get is application;
			[[self setObject:[NSDictionary dictionaryWithObjectAndKey:[NSNumber numberWithBool:isApp],@"isApplication,nil] forCache:@"QSItemInfoRecord"];
	}
	return [[[self objectForCache:@"QSItemInfoRecord"] objectForKey:@"isApplication] boolValue];
}