long VSIFTell( FILE * fp )
{
long nOffset = ftell(fp);
#ifdef VSI_DEBUG
int nError = errno;
VSIDebug2( "VSIFTell(%p) = %ld", fp, nOffset );
errno = nError;
#endif
return nOffset;
}
int VSIFSeek( FILE * fp, long nOffset, int nWhence )
{
#ifdef VSI_DEBUG
if( nWhence == SEEK_SET )
{
VSIDebug2( "VSIFSeek(%p,%d,SEEK_SET)", fp, nOffset );
}
else if( nWhence == SEEK_END )
{
VSIDebug2( "VSIFSeek(%p,%d,SEEK_END)", fp, nOffset );
}
else if( nWhence == SEEK_CUR )
{
VSIDebug2( "VSIFSeek(%p,%d,SEEK_CUR)", fp, nOffset );
}
else
{
VSIDebug3( "VSIFSeek(%p,%d,%d-Unknown)", fp, nOffset, nWhence );
}
#endif
return( fseek( fp, nOffset, nWhence ) );
}
void VSIFFlush( FILE * fp )
{
#ifdef VSI_DEBUG
VSIDebug1( "VSIFFlush(%p)", fp );
const int result =
#endif
fflush( fp );
#ifdef VSI_DEBUG
// Capture the error rewind ftell to avoid being overwritten by errors
// from VSIDebug.
const int nError = errno;
VSIDebug2( "VSIRewind(%p) errno = %d", fp, nError );
if ( result != 0 )
{
CPLError( CE_Failure, CPLE_FileIO, "Flush failed. errno = %d",
nError);
}
errno = nError;
#endif
}
