[gdal-dev] Re: [GRASS-dev] Updated OGR/SHAPELIB based DBF driver crashing with GRASS SVN

[Glynn Clements]

Markus Neteler wrote:

> after syncing (as regularly) the DBF driver from SHAPELIB embedded
> in OGR, we face the problem that it no longer works with older GDAL
> versions than current SVN:
> 
> http://trac.osgeo.org/grass/ticket/110
> 
> I don't know what to do. In essence, I don't want to fork our version
> from yours.
> 
> Any ideas?

I suggest using a "stub" implementation of the I/O hooks. E.g.:

typedef struct {
    FILE*     (*FOpen) ( const char *filename, const char *path);
    size_t    (*FRead) ( void *p, size_t size, size_t nmemb, FILE* file);
    size_t    (*FWrite)( void *p, size_t size, size_t nmemb, FILE* file);
    long      (*FSeek) ( FILE* file, long offset, int whence );
    long      (*FTell) ( FILE* file );
    int       (*FFlush)( FILE* file );
    int       (*FClose)( FILE* file );
    void      (*Error) ( const char *message );
} SAHooks;

static void error_fn( const char *message )
{
    G_fatal_error("%s", message);
}

static void SASetupDefaultHooks( SAHooks *psHooks )
{
    psHooks->FOpen  = fopen;
    psHooks->FRead  = fread;
    psHooks->FWrite = fwrite;
    psHooks->FSeek  = fseek;
    psHooks->FTell  = ftell;
    psHooks->FFlush = fflush;
    psHooks->FClose = fclose;
    psHooks->Error  = error_fn;
}

-- 
Glynn Clements <glynn at gclements.plus.com>