Re: [Libexif-devel] Error handling

[Lutz <lu...@us...>]

On Sun, 2004-05-16 at 16:17, Joerg Hoh wrote:
> I prefer a to replace at least some void-functions with (signed) int with a
> standard return value of 1; if an error happens, they will return something
> != 1 (normally < 1).

(1) User clicks and empty information shows up.
    This is the case now.

(2) User clicks and gets message: "An error occurred."
    This is your proposal.

(3) User clicks and gets message: "Error xy occurred."
    Like EXIF_ERROR_CORRUPT_DATA, 
         EXIF_ERROR_UNKNOWN_FORMAT

(4) User clicks and gets message: 
    "Error xy occurred at byte 4711 in EXIF data. 
     The EXIF data in your image is broken. 
     Please contact mailing list xyz."
    Implemented i.e. like
    void exif_data_load_data (..., ExifResult *result);
    where 
    typedef struct {
        char *msg;
        ExifError err;
    } ExifResult;

When doing error reporting, I'd like to do it in a userfriendly way,
i.e. solution (4) or something better.

Lutz