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%%	options

copyright owner	=	Dirk Krause
copyright year	=	2019-xxxx
SPDX-License-Identifier:	BSD-3-Clause


%%	header

/**	@file	dk4chdirw.h	Change current working directory.
*/


#ifndef	DK4CONF_H_INCLUDED
#if	DK4_BUILDING_DKTOOLS4
#include "dk4conf.h"
#else
#include <dktools-4/dk4conf.h>
#endif
#endif

#ifndef DK4ERROR_H_INCLUDED
#if	DK4_BUILDING_DKTOOLS4
#include "dk4error.h"
#else
#include <dktools-4/dk4error.h>
#endif
#endif

#ifdef	__cplusplus
extern "C" {
#endif


/**	Change current working directory.
	@param	nd	Name of new directory.
	@param	erp	Error report, may be NULL.
	@return	1 on success, 0 on error.

	CRT on Windows: Optional.

	Error codes:
	- DK4_E_INVALID_ARGUMENTS<br>
	  if nd is NULL,
	- DK4_E_NOT_SUPPORTEDy<br>
	  if the operation is not supported on the current system,
	- DK4_E_SYSTEM<br>
	  with error code in lDetails1 or iDetails1 if the operation
	  is supported but did fail.
*/

int
dk4chdir_wc(const wchar_t *nd, dk4_er_t *erp);


#ifdef	__cplusplus
}
#endif



/* vim: set ai sw=4 ts=4 : */

%%	module


#include "dk4conf.h"
#include "dk4chdirw.h"


#if DK4_ON_WINDOWS
#ifndef WINDOWS_H_INCLUDED
#include <windows.h>
#define	WINDOWS_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_UNISTD_H
#ifndef UNISTD_H_INCLUDED
#include <unistd.h>
#define	UNISTD_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_STDLIB_H
#ifndef STDLIB_H_INCLUDED
#include <stdlib.h>
#define	STDLIB_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_DIRECT_H
#ifndef DIRECT_H_INCLUDED
#include <direct.h>
#define DIRECT_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_ERRNO_H
#ifndef ERRNO_H_INCLUDED
#include <errno.h>
#define	ERRNO_H_INCLUDED 1
#endif
#endif

#if	DK4_HAVE_ASSERT_H
#ifndef	ASSERT_H_INCLUDED
#include <assert.h>
#define	ASSERT_H_INCLUDED 1
#endif
#endif


$!trace-include



int
dk4chdir_wc(const wchar_t *nd, dk4_er_t *erp)
{
	int		 back	= 0;
	$? "+ dk4chdir_wc \"%!ws\"", TR_LSTR(nd)
#if	DK4_USE_ASSERT
  assert(NULL != nd);
#endif
	if (NULL != nd) {
#if	DK4_ON_WINDOWS
#if DK4_WIN_AVOID_CRT || DK4_WIN_DENY_CRT
		if (SetCurrentDirectoryW(nd)) {
			back = 1;
		}
		else {							$? "! SetCurrentDirectoryW"
			dk4error_set_ldetails(erp, DK4_E_SYSTEM, GetLastError());
		}
#else
		if (0 == _wchdir(nd)) {
			back = 1;
		}
		else {							$? "! _wchdir"
			dk4error_set_idetails(erp, DK4_E_SYSTEM, errno);
		}
#endif
#else
		$? "! not supported"
		dk4error_set_simple_error_code(erp, DK4_E_NOT_SUPPORTED);
#endif
	}
	else {								$? "! nd"
		dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
	}
	$? "- dk4chdir_wc %d", back
	return back;
}



/* vim: set ai sw=4 ts=4 : */