1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 1996, by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* 30 * wio_put.c 31 * 32 * Wide I/O Library 33 * 34 * Copyright 1990, 1995 by Mortice Kern Systems Inc. All rights reserved. 35 * 36 */ 37 38 #if M_RCSID 39 #ifndef lint 40 static char rcsID[] = "$Header: /rd/src/libc/wide/rcs/wio_put.c 1.1 1995/07/26 17:51:21 ant Exp $"; 41 #endif 42 #endif 43 44 #include <mks.h> 45 #include <errno.h> 46 #include <m_wio.h> 47 48 /* 49 * Return the number of bytes written. Errno will be set for errors. 50 * 51 * The function referenced by "put" is passed a byte value and the 52 * pointer "object", and returns the byte value or EOF if no further 53 * data can be written. 54 */ 55 int 56 m_wio_put(wc, wio) 57 wint_t wc; 58 t_wide_io *wio; 59 { 60 int count, mb_len; 61 unsigned char *ptr; 62 63 if (wio == (t_wide_io *) 0 || wio->put == (int (*)(int, void *)) 0) { 64 errno = EINVAL; 65 return -1; 66 } 67 68 /* Force shift-in state at end-of-file. */ 69 if (wc == WEOF) 70 wc = '\0'; 71 72 if ((mb_len = wcrtomb((char *) wio->_mb, wc, &wio->_state)) < 0) 73 /* Note errno will have been set by wcrtomb(). */ 74 return -1; 75 76 /* When shift-in state has been forced don't write '\0' byte. 77 * The "stream" object is considered to be in "text" mode, in 78 * which case file I/O produces undefined results for systems 79 * using locking-shift character sets. 80 */ 81 if (wc == '\0') 82 --mb_len; 83 84 /* Write multibyte character sequence. */ 85 for (ptr = wio->_mb, count = 0; count < mb_len; ++ptr, ++count) 86 if ((*wio->put)(*ptr, wio->object) == EOF) 87 break; 88 89 /* Remember just in case some one needs it. */ 90 wio->_size = mb_len; 91 wio->_next = count; 92 93 return count; 94 } 95 96