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adf_nativ.c

/* Win32/adf_nativ.c - Win32 specific drive-access routines for ADFLib
 *
 * Modified for Win32 by Dan Sutherland <dan@chromerhino.demon.co.uk>
 *
 *  This file is part of ADFLib.
 *
 *  ADFLib 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 of the License, or
 *  (at your option) any later version.
 *
 *  ADFLib 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 Foobar; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */
 

/* Modified 29/8/00 by Gary Harris.
** - Added a third, Boolean argument to Win32InitDevice() to avoid a compilation warning
**   caused by the mismatch with the number of arguments in ADFLib's adfInitDevice().
*/

#include <windows.h>
#include <stdlib.h>
#include <string.h>

#include "../adf_str.h"
#include "../adf_err.h"

#include "adf_nativ.h"
#include "nt4_dev.h"

extern struct Env adfEnv;

RETCODE Win32InitDevice(struct Device* dev, char* lpstrName, BOOL ro)
{
      struct nativeDevice* nDev;
      char strTempName[3];

      nDev = (struct nativeDevice*)dev->nativeDev;

      nDev = (struct nativeDevice*)malloc(sizeof(struct nativeDevice));
      if (!nDev) {
            (*adfEnv.eFct)("Win32InitDevice : malloc");
            return RC_ERROR;                                                                          /* BV */
      }

      /* convert device name to something usable by Win32 functions */
      if (strlen(lpstrName) != 3) {
            (*adfEnv.eFct)("Win32InitDevice : invalid drive specifier");
            return RC_ERROR;                                                                          /* BV */
      }

      strTempName[0] = lpstrName[1];
      strTempName[1] = lpstrName[2];
      strTempName[2] = '\0';

      nDev->hDrv = NT4OpenDrive(strTempName);

      if (nDev->hDrv == NULL) {
            (*adfEnv.eFct)("Win32InitDevice : NT4OpenDrive");
            return RC_ERROR;                                                                          /* BV */
      }

      dev->size = NT4GetDriveSize(nDev->hDrv);

      dev->nativeDev = nDev;

      return RC_OK;
}


RETCODE Win32ReadSector(struct Device *dev, long n, int size, unsigned char* buf)
{
      struct nativeDevice* tDev;

      tDev = (struct nativeDevice*)dev->nativeDev;

      if (! NT4ReadSector(tDev->hDrv, n, size, buf)) {
            (*adfEnv.eFct)("Win32InitDevice : NT4ReadSector");
            return RC_ERROR;                                                                          /* BV */
      }

      return RC_OK;
}


RETCODE Win32WriteSector(struct Device *dev, long n, int size, unsigned char* buf)
{
      struct nativeDevice* tDev;

      tDev = (struct nativeDevice*)dev->nativeDev;

      if (! NT4WriteSector(tDev->hDrv, n, size, buf)) {
            (*adfEnv.eFct)("Win32InitDevice : NT4WriteSector");
            return RC_ERROR;                                                                          /* BV */
      }

      return RC_OK;
}


RETCODE Win32ReleaseDevice(struct Device *dev)
{
      struct nativeDevice* nDev;

      nDev = (struct nativeDevice*)dev->nativeDev;

      if (! NT4CloseDrive(nDev->hDrv))
            return RC_ERROR;                                                                          /* BV */

      free(nDev);

      return RC_OK;
}


void adfInitNativeFct()
{
      struct nativeFunctions *nFct;

      nFct = (struct nativeFunctions*)adfEnv.nativeFct;

      nFct->adfInitDevice = Win32InitDevice;
      nFct->adfNativeReadSector = Win32ReadSector;
      nFct->adfNativeWriteSector = Win32WriteSector;
      nFct->adfReleaseDevice = Win32ReleaseDevice;
      nFct->adfIsDevNative = Win32IsDevNative;
}


BOOL Win32IsDevNative(char *devName)
{
      return devName[0] == '|';
}

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