/*

File: PDEChoice.m

Abstract: The PDEChoice class is used to manage user preferences and

    ease translation of those preferences between internal and user

    representations.

Version: 1.0

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*/

#import "PDEChoice.h"

#import "PDELogging.h"

#import "Utilities.h"

@implementation PDEChoice

static NSStringEncoding ppdEncoding = 0;

+(void)initialize

{

    if(RunningOn105OrLater()) {

        // On 10.5 or later CUPS always uses UTF-8 encoding,

        // so all localized text from a PPD will be in this encoding.

        ppdEncoding = NSUTF8StringEncoding;

    } else {

        // On 10.4 the encoding that CUPS uses is the same as

        // the underlying PPD file. The easiest thing that you

        // can do is to encode your PPDs as UTF-8 on 10.4,

        // and that is what is assumed here, but if that is

        // not possible then you should use an appropriate

        // encoding for your PPDs (your logic may need to be

        // more complicated than this).

        // Bottom line - encode your PPDs as UTF-8 to avoid this issue.

        ppdEncoding = NSUTF8StringEncoding;

    }

    FLog(@"Encoding set as %i", ppdEncoding);

}

+(id)choiceWithChoice:(ppd_choice_t*)c

{

    return [[[PDEChoice alloc] initWithChoice:c] autorelease];

}

-(id)initWithChoice:(ppd_choice_t*)c

{

    if((self = [super init]) != nil) {

        userTitle = nil;

        ppdTitle = nil;

        choice = c;

        if(choice->text == NULL) {

            PDELog(@"choice->text is NULL!");

        }

        if(choice->choice == NULL) {

            PDELog(@"choice->choice is NULL!");

        }

    }

    return self;

}

-(NSString*)userTitle

{

    if(userTitle == nil) {

        // Localized text uses either UTF-8 on 10.5+ or the file's encoding on 10.4.

        // See +initialize for more details.

        userTitle = [[NSString alloc] initWithCString:choice->text encoding:ppdEncoding];

        if(userTitle == nil) {

            PDELog(@"could not create userTitle!");

        }

    }

    return userTitle;

}

-(NSString*)ppdTitle

{

    if(ppdTitle == nil) {

        // The title string, which is not user-visible, must be pure ASCII.

        ppdTitle = [[NSString alloc] initWithCString:choice->choice encoding:NSASCIIStringEncoding];

        if(ppdTitle == nil) {

            PDELog(@"could not create ppdTitle!");

        }

    }

    return ppdTitle;

}

-(ppd_choice_t*)choice

{

    return choice;

}

-(BOOL)isDefaultChoice

{

    return strncmp(choice->choice, choice->option->defchoice, PPD_MAX_NAME) == 0;

}

-(NSString*)description {

    return [NSString stringWithFormat:@"<%@ %p userTitle:\"%@\" ppdTitle:\"%@\" marked:%s choice:%i of %i>", [[self class] className], self, [self userTitle], [self ppdTitle], choice->marked ? "YES" : "NO", (choice - choice->option->choices) + 1, choice->option->num_choices];

}

- (void) dealloc

{

    [userTitle release];

    [ppdTitle release];

    [super dealloc];

}

@end