/***
*unlink.c - unlink a file
*
*	Copyright (c) 1989-1995, Microsoft Corporation. All rights reserved.
*
*Purpose:
*	defines unlink() - unlink a file
*
*Revision History:
*	06-06-89  PHG	Module created, based on asm version
*	03-07-90  GJF	Made calling type _CALLTYPE2 (for now), added #include
*			<cruntime.h>, fixed compiler warnings and fixed the
*			copyright. Also, cleaned up the formatting a bit.
*	07-24-90  SBM	Removed '32' from API names
*	09-27-90  GJF	New-style function declarators.
*	12-04-90  SRW	Changed to include <oscalls.h> instead of <doscalls.h>
*	12-06-90  SRW	Added _CRUISER_ and _WIN32 conditionals.
*	01-16-91  GJF	ANSI naming.
*	04-10-91  PNT	Added _MAC_ conditional
*	03-16-92  PLM	MAC verison ccreated from OS/2 version
*	04-10-91  PNT   Added _MAC_ conditional (Mac version only)
*	11-02-92  PLM	Added directory test and extracted code for remove() (Mac version only)
*	04-06-93  SKS	Replace _CRTAPI* with __cdecl
*	11-01-93  CFW	Enable Unicode variant, rip out Cruiser.
*	02-08-95  JWM	Spliced _WIN32 & Mac versions.
*
*******************************************************************************/

#ifdef _WIN32

#include <cruntime.h>
#include <oscalls.h>
#include <internal.h>
#include <io.h>
#include <tchar.h>

/***
*int _unlink(path) - unlink(delete) the given file
*
*Purpose:
*	This version deletes the given file because there is no
*	distinction between a linked file and non-linked file.
*
*	NOTE: remove() is an alternative entry point to the _unlink()
*	routine* interface is identical.
*
*Entry:
*	_TSCHAR *path -	file to unlink/delete
*
*Exit:
*	returns 0 if successful
*	returns -1 and sets errno if unsuccessful
*
*Exceptions:
*
*******************************************************************************/

int __cdecl _tremove (
	const _TSCHAR *path
	)
{
	ULONG dosretval;

        if (!DeleteFile((LPTSTR)path))
                dosretval = GetLastError();
        else
                dosretval = 0;

	if (dosretval) {
		/* error occured -- map error code and return */
		_dosmaperr(dosretval);
		return -1;
	}

	return 0;
}

int __cdecl _tunlink (
	const _TSCHAR *path
	)
{
	/* remove is synonym for unlink */
	return _tremove(path);
}

#else		/* ndef _WIN32 */


#include <cruntime.h>
//#include <oscalls.h>
#include <internal.h>
#include <io.h>
#include <errno.h>
#include <stdlib.h>
#include <macos\files.h>
#include <macos\errors.h>
#include <string.h>

/***
*int _unlink(path) - unlink(delete) the given file
*
*Purpose:
*	This version deletes the given file but not a directory
*
*Entry:
*	char *path -	file to unlink/delete
*
*Exit:
*	returns 0 if successful
*	returns -1 and sets errno if unsuccessful
*
*Exceptions:
*
*******************************************************************************/

int _CALLTYPE1 _unlink (
	const char *path
	)
{
	ParamBlockRec parm;
	OSErr osErr;
	char stPath[256];

	if (!*path || strlen(path) > 255)
		{
		errno = ENOENT;
		return -1;
		}
	strcpy(stPath, path);
	_c2pstr(stPath);

	memset(&parm, '\0', sizeof(ParamBlockRec));
	parm.fileParam.ioNamePtr = stPath;
	/* parm.fileParam.ioVRefNum = 0; */
	/* parm.fileParam.ioFDirIndex = 0; */

	if (!(osErr = PBGetFInfoSync(&parm)))  /* Make sure it's not a dir */
		{
		memset(&parm, '\0', sizeof(ParamBlockRec));
		parm.ioParam.ioNamePtr = stPath;
		/* parm.ioParam.ioVRefNum = 0; */
		osErr = PBDeleteSync(&parm);
		}

	if (osErr)
		{
		/* error occured -- map error code and return */
		_dosmaperr(osErr);
		return -1;
		}
	return 0;
		
}

#endif		/* _WIN32 */