/********************************************************/

/*  ntapi: Native API core library                      */

/*  Copyright (C) 2013--2017  Z. Gilboa                 */

/*  Released under GPLv2 and GPLv3; see COPYING.NTAPI.  */

/********************************************************/

#include <psxtypes/psxtypes.h>

#include <ntapi/ntapi.h>

#include "ntapi_impl.h"

int32_t __stdcall __ntapi_tt_get_env_var_meta_utf16(

	__in	wchar16_t *		env_var_name,

	__in	wchar16_t **		envp,

	__out	nt_env_var_meta_utf16 *	env_var_meta)

{

	int		idx;

	wchar16_t *	wch;

	#define EQUAL_SIGN 0x3D

	/* init */

	env_var_meta->name       = 0;

	env_var_meta->value      = 0;

	env_var_meta->envp_index = 0;

	env_var_meta->flags      = 0;

	/* lookup */

	for (idx=0; envp[idx] && !env_var_meta->value; idx++) {

		wch = envp[idx];

		while (*wch && (*wch != EQUAL_SIGN))

			wch++;

		if (*wch != EQUAL_SIGN)

			return NT_STATUS_ILLEGAL_CHARACTER;

		if (!(__ntapi->tt_strncmp_utf16(

				envp[idx],

				env_var_name,

				wch - envp[idx]))) {

			wch++;

			env_var_meta->name       = envp[idx];

			env_var_meta->value      = wch;

			env_var_meta->envp_index = idx;

		}

	}

	return NT_STATUS_SUCCESS;

}