/*
 * crc
 *  Checks CRC values for resource files
 *
 * v. 1.00 (24 August 1991)
 *
 * © 1991-1998 Straylight
 */

/*----- Licensing note ----------------------------------------------------*
 *
 * This file is part of Straylight's Steel library.
 *
 * Steel is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * Steel is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Steel.  If not, write to the Free Software Foundation,
 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#ifndef __crc_h
#define __crc_h

/*
 * long crc(char *filename)
 *
 * Use
 *  Calculates the CRC value for the file specified.  Uses the same method
 *  as WindowEd etc.
 *
 * Parameters
 *  char *filename == the filename of the file to check (leaf only - it's
 *    passed through res_findname()).  Note that CRC-checking the
 *    '!RunImage' file is rather silly.
 *
 * Returns
 *  A 4-byte CRC value
 */

long crc(char *filename);

/*
 * void crc_check(char *filename,long check)
 *
 * Use
 *  Checks a CRC value for a file and reports a fatal error if the check
 *  fails.
 *
 * Parameters
 *  char *filename == the leafname of the file
 *  long check == the CRC number to check with
 */

void crc_check(char *filename,long check);

/*
 * void crc_checkRunImage(void)
 *
 * Use
 *  Corruption-checks the main !RunImage file.  It must have been passed
 *  through CodeScr first, to install the CRC into the code.
 */

void crc_checkRunImage(void);

#endif