/* Win32/adf_nativ.c - Win32 specific drive-access routines for ADFLib
 *
 * Modified for Win32 by Dan Sutherland <dan@chromerhino.demon.co.uk>
 */

// 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 FALSE;
	}

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

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

	nDev->hDrv = NT4OpenDrive(strTempName);

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

	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 FALSE;
	}

	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 FALSE;
	}

	return RC_OK;
}


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

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

	if (! NT4CloseDrive(nDev->hDrv))
		return FALSE;

	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] == '|';
}