/********************************************************/
/*  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_utf8(
	__in	char *			env_var_name,
	__in	char **			envp,
	__out	nt_env_var_meta_utf8 *	env_var_meta)
{
	char **		penv;
	char *		ch;

	/* lookup */
	for (penv=envp; *penv; penv++) {
		for (ch=penv[0]; *ch && (*ch != '='); )
			ch++;

		if (*ch != '=')
			return NT_STATUS_INVALID_USER_BUFFER;

		if ((ch > *penv) && !(__ntapi->tt_strncmp_multibyte(
				*penv,
				env_var_name,
				ch - *penv))) {
			/* match */
			env_var_meta->name       = *penv;
			env_var_meta->value      = ++ch;
			env_var_meta->envp_index = penv - envp;
			env_var_meta->flags      = 0;

			return NT_STATUS_SUCCESS;
		}
	}

	return NT_STATUS_NOT_FOUND;
}


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)
{
	wchar16_t **	penv;
	wchar16_t *	wch;

	/* lookup */
	for (penv=envp; *penv; penv++) {
		for (wch=penv[0]; *wch && (*wch != '='); )
			wch++;

		if (*wch != '=')
			return NT_STATUS_INVALID_USER_BUFFER;

		if ((wch > *penv) && !(__ntapi->tt_strncmp_utf16(
				*penv,
				env_var_name,
				wch - *penv))) {
			/* match */
			env_var_meta->name       = *penv;
			env_var_meta->value      = ++wch;
			env_var_meta->envp_index = penv - envp;
			env_var_meta->flags      = 0;


			return NT_STATUS_SUCCESS;
		}
	}

	return NT_STATUS_NOT_FOUND;
}