17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate * CDDL HEADER START
37c478bd9Sstevel@tonic-gate *
47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*7257d1b4Sraf * Common Development and Distribution License (the "License").
6*7257d1b4Sraf * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate *
87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate * and limitations under the License.
127c478bd9Sstevel@tonic-gate *
137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate *
197c478bd9Sstevel@tonic-gate * CDDL HEADER END
207c478bd9Sstevel@tonic-gate */
21*7257d1b4Sraf
227c478bd9Sstevel@tonic-gate /*
23*7257d1b4Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
247c478bd9Sstevel@tonic-gate * Use is subject to license terms.
257c478bd9Sstevel@tonic-gate */
267c478bd9Sstevel@tonic-gate
277c478bd9Sstevel@tonic-gate /* Copyright (c) 1986 AT&T */
287c478bd9Sstevel@tonic-gate /* All Rights Reserved */
297c478bd9Sstevel@tonic-gate
30*7257d1b4Sraf #include "lint.h"
317c478bd9Sstevel@tonic-gate #include "file64.h"
327c478bd9Sstevel@tonic-gate #include <stdio.h>
337c478bd9Sstevel@tonic-gate #include <stdarg.h>
347c478bd9Sstevel@tonic-gate #include <stdlib.h>
357c478bd9Sstevel@tonic-gate #include <widec.h>
367c478bd9Sstevel@tonic-gate #include <string.h>
377c478bd9Sstevel@tonic-gate #include "libc.h"
387c478bd9Sstevel@tonic-gate #include "stdiom.h"
397c478bd9Sstevel@tonic-gate
407c478bd9Sstevel@tonic-gate /*
417c478bd9Sstevel@tonic-gate * wsscanf -- this function will read wchar_t characters from
427c478bd9Sstevel@tonic-gate * wchar_t string according to the conversion format.
437c478bd9Sstevel@tonic-gate * Note that the performance degrades if the intermediate
447c478bd9Sstevel@tonic-gate * result of conversion exceeds 1024 bytes due to the
457c478bd9Sstevel@tonic-gate * use of malloc() on each call.
467c478bd9Sstevel@tonic-gate * We should implement wchar_t version of doscan()
477c478bd9Sstevel@tonic-gate * for better performance.
487c478bd9Sstevel@tonic-gate */
497c478bd9Sstevel@tonic-gate #define MAXINSTR 1024
507c478bd9Sstevel@tonic-gate
517c478bd9Sstevel@tonic-gate int
wsscanf(wchar_t * string,const char * format,...)527c478bd9Sstevel@tonic-gate wsscanf(wchar_t *string, const char *format, ...)
537c478bd9Sstevel@tonic-gate {
547c478bd9Sstevel@tonic-gate va_list ap;
557c478bd9Sstevel@tonic-gate size_t i;
567c478bd9Sstevel@tonic-gate char stackbuf[MAXINSTR];
577c478bd9Sstevel@tonic-gate char *tempstring = stackbuf;
587c478bd9Sstevel@tonic-gate size_t malloced = 0;
597c478bd9Sstevel@tonic-gate int j;
607c478bd9Sstevel@tonic-gate
617c478bd9Sstevel@tonic-gate i = wcstombs(tempstring, string, MAXINSTR);
627c478bd9Sstevel@tonic-gate if (i == (size_t)-1)
637c478bd9Sstevel@tonic-gate return (-1);
647c478bd9Sstevel@tonic-gate
657c478bd9Sstevel@tonic-gate if (i == MAXINSTR) { /* The buffer was too small. Malloc it. */
667c478bd9Sstevel@tonic-gate tempstring = malloc(malloced = MB_CUR_MAX*wcslen(string)+1);
677c478bd9Sstevel@tonic-gate if (tempstring == 0)
687c478bd9Sstevel@tonic-gate return (-1);
697c478bd9Sstevel@tonic-gate i = wcstombs(tempstring, string, malloced); /* Try again. */
707c478bd9Sstevel@tonic-gate if (i == (size_t)-1) {
717c478bd9Sstevel@tonic-gate free(tempstring);
727c478bd9Sstevel@tonic-gate return (-1);
737c478bd9Sstevel@tonic-gate }
747c478bd9Sstevel@tonic-gate }
757c478bd9Sstevel@tonic-gate
767c478bd9Sstevel@tonic-gate va_start(ap, format);
777c478bd9Sstevel@tonic-gate j = vsscanf(tempstring, format, ap);
787c478bd9Sstevel@tonic-gate va_end(ap);
797c478bd9Sstevel@tonic-gate if (malloced) free(tempstring);
807c478bd9Sstevel@tonic-gate return (j);
817c478bd9Sstevel@tonic-gate }
82