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 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _MSE_H 28 #define _MSE_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <stdio.h> 33 #include <wchar.h> 34 #include <string.h> 35 #include "stdiom.h" 36 37 typedef enum { 38 _NO_MODE, /* not bound */ 39 _BYTE_MODE, /* Byte orientation */ 40 _WC_MODE /* Wide orientation */ 41 } _IOP_orientation_t; 42 43 /* 44 * DESCRIPTION: 45 * This function gets the pointer to the mbstate_t structure associated 46 * with the specified iop. 47 * 48 * RETURNS: 49 * If the associated mbstate_t found, the pointer to the mbstate_t is 50 * returned. Otherwise, (mbstate_t *)NULL is returned. 51 */ 52 #ifdef _LP64 53 #define _getmbstate(iop) (&(iop)->_state) 54 #else 55 extern mbstate_t *_getmbstate(FILE *); 56 #endif 57 58 /* 59 * DESCRIPTION: 60 * This function/macro gets the orientation bound to the specified iop. 61 * 62 * RETURNS: 63 * _WC_MODE if iop has been bound to Wide orientation 64 * _BYTE_MODE if iop has been bound to Byte orientation 65 * _NO_MODE if iop has been bound to neither Wide nor Byte 66 */ 67 extern _IOP_orientation_t _getorientation(FILE *); 68 69 /* 70 * DESCRIPTION: 71 * This function/macro sets the orientation to the specified iop. 72 * 73 * INPUT: 74 * flag may take one of the following: 75 * _WC_MODE Wide orientation 76 * _BYTE_MODE Byte orientation 77 * _NO_MODE Unoriented 78 */ 79 extern void _setorientation(FILE *, _IOP_orientation_t); 80 81 /* 82 * From page 32 of XSH5 83 * Once a wide-character I/O function has been applied 84 * to a stream without orientation, the stream becomes 85 * wide-orientated. Similarly, once a byte I/O function 86 * has been applied to a stream without orientation, 87 * the stream becomes byte-orientated. Only a call to 88 * the freopen() function or the fwide() function can 89 * otherwise alter the orientation of a stream. 90 */ 91 92 /* 93 * libc_i18n provides the following functions: 94 */ 95 extern int _set_orientation_wide(FILE *, void **, void (*(*))(void), int); 96 extern void *__mbst_get_lc_and_fp(const mbstate_t *, 97 void (*(*))(void), int); 98 /* 99 * Above two functions take either FP_WCTOMB or FP_FGETWC for the integer 100 * argument. 101 */ 102 #define FP_WCTOMB 0 103 #define FP_FGETWC 1 104 105 #define _SET_ORIENTATION_BYTE(iop) \ 106 { \ 107 if (GET_NO_MODE(iop)) \ 108 _setorientation(iop, _BYTE_MODE); \ 109 } 110 111 /* The following is specified in the argument of _get_internal_mbstate() */ 112 #define _MBRLEN 0 113 #define _MBRTOWC 1 114 #define _WCRTOMB 2 115 #define _MBSRTOWCS 3 116 #define _WCSRTOMBS 4 117 #define _MAX_MB_FUNC _WCSRTOMBS 118 119 extern void _clear_internal_mbstate(void); 120 extern mbstate_t *_get_internal_mbstate(int); 121 122 #define MBSTATE_INITIAL(ps) MBSTATE_RESTART(ps) 123 #define MBSTATE_RESTART(ps) \ 124 (void) memset((void *)ps, 0, sizeof (mbstate_t)) 125 126 #endif /* _MSE_H */ 127