#ifndef xySource
#define xySource

/* $Id: Source.h,v 1.0 1992/08/07 14:31:44 grosch rel $ */

/* $Log: Source.h,v $
 * Revision 1.0  1992/08/07  14:31:44  grosch
 * Initial revision
 *
 */

/* Ich, Doktor Josef Grosch, Informatiker, Juli 1992 */


int BeginSource(char *FileName);
/* BeginSource is called from the scanner to open files. */
/* If not called input is read form standard input.      */


int GetLine(int File, char *Buffer, int Size);
/* GetLine is called to fill a buffer starting at address 'Buffer'   */
/* with a block of maximal 'Size' characters. Lines are terminated   */
/* by newline characters (ASCII = 0xa). GetLine returns the number   */
/* of characters transferred. Reasonable block sizes are between 128 */
/* and 2048 or the length of a line. Smaller block sizes -           */
/* especially block size 1 - will drastically slow down the scanner. */


void CloseSource(int File);
/* CloseSource is called from the scanner at end of file respectively */
/* at end of input. It can be used to close files.                    */

#endif