2N/A/*
2N/A * CDDL HEADER START
2N/A *
2N/A * The contents of this file are subject to the terms of the
2N/A * Common Development and Distribution License (the "License").
2N/A * You may not use this file except in compliance with the License.
2N/A *
2N/A * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
2N/A * or http://www.opensolaris.org/os/licensing.
2N/A * See the License for the specific language governing permissions
2N/A * and limitations under the License.
2N/A *
2N/A * When distributing Covered Code, include this CDDL HEADER in each
2N/A * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
2N/A * If applicable, add the following below this CDDL HEADER, with the
2N/A * fields enclosed by brackets "[]" replaced with your own identifying
2N/A * information: Portions Copyright [yyyy] [name of copyright owner]
2N/A *
2N/A * CDDL HEADER END
2N/A */
2N/A
2N/A/*
2N/A * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
2N/A * Use is subject to license terms.
2N/A */
2N/A
2N/A/* Copyright (c) 1986 AT&T */
2N/A/* All Rights Reserved */
2N/A
2N/A#pragma ident "%Z%%M% %I% %E% SMI"
2N/A
2N/A#include "lint.h"
2N/A#include "file64.h"
2N/A#include <stdio.h>
2N/A#include <stdarg.h>
2N/A#include <stdlib.h>
2N/A#include <widec.h>
2N/A#include <string.h>
2N/A#include "libc.h"
2N/A#include "stdiom.h"
2N/A
2N/A/*
2N/A * wsscanf -- this function will read wchar_t characters from
2N/A * wchar_t string according to the conversion format.
2N/A * Note that the performance degrades if the intermediate
2N/A * result of conversion exceeds 1024 bytes due to the
2N/A * use of malloc() on each call.
2N/A * We should implement wchar_t version of doscan()
2N/A * for better performance.
2N/A */
2N/A#define MAXINSTR 1024
2N/A
2N/Aint
2N/Awsscanf(wchar_t *string, const char *format, ...)
2N/A{
2N/A va_list ap;
2N/A size_t i;
2N/A char stackbuf[MAXINSTR];
2N/A char *tempstring = stackbuf;
2N/A size_t malloced = 0;
2N/A int j;
2N/A
2N/A i = wcstombs(tempstring, string, MAXINSTR);
2N/A if (i == (size_t)-1)
2N/A return (-1);
2N/A
2N/A if (i == MAXINSTR) { /* The buffer was too small. Malloc it. */
2N/A tempstring = malloc(malloced = MB_CUR_MAX*wcslen(string)+1);
2N/A if (tempstring == 0)
2N/A return (-1);
2N/A i = wcstombs(tempstring, string, malloced); /* Try again. */
2N/A if (i == (size_t)-1) {
2N/A free(tempstring);
2N/A return (-1);
2N/A }
2N/A }
2N/A
2N/A va_start(ap, format);
2N/A j = vsscanf(tempstring, format, ap);
2N/A va_end(ap);
2N/A if (malloced) free(tempstring);
2N/A return (j);
2N/A}