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 1989 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <sys/types.h> 30 #include "codeset.h" 31 #include "mbextern.h" 32 #include "euc.h" 33 #include <limits.h> 34 35 #define EUCMASK 0x8080 /* All id bits */ 36 #define MASK0 0x0000 /* Code Set 0 */ 37 #define MASK1 0x8080 /* Code Set 1 */ 38 #define MASK2 0x0080 /* Code Set 2 */ 39 #define MASK3 0x8000 /* Code Set 3 */ 40 41 #define EUCWID1 eucinfo->_eucw1 42 #define EUCWID2 eucinfo->_eucw2 43 #define EUCWID3 eucinfo->_eucw3 44 45 int _wctomb_euc(char *, wchar_t); 46 47 int 48 _mbtowc_euc(wchar_t *wchar, char *s, size_t n) 49 { 50 int length; 51 wchar_t intcode; 52 int c; 53 char *olds = (char *)s; 54 wchar_t mask; 55 eucwidth_t * eucinfo = (eucwidth_t *)_code_set_info.code_info; 56 57 if(n <= 0) 58 return(-1); 59 if(s == (char *)0) 60 return (0); 61 c = (unsigned char)*s++; 62 if(c < 0200) { 63 if(wchar) 64 *wchar = c; 65 return (c ? 1 : 0); 66 } 67 intcode = 0; 68 if (c == SS2) { 69 if(!(length = EUCWID2)) { 70 if(wchar) 71 *wchar = c; 72 return (1); 73 } 74 mask = MASK2; 75 } else if(c == SS3) { 76 if(!(length = EUCWID3)) { 77 if(wchar) 78 *wchar = c; 79 return (1); 80 } 81 mask = MASK3; 82 } else { 83 if(iscntrl(c)) { 84 if(wchar) 85 *wchar = c; 86 return (1); 87 } 88 length = EUCWID1 - 1; 89 mask = MASK1; 90 intcode = c & 0177; 91 } 92 if(length + 1 > n) 93 return (-1); 94 while(length--) { 95 if((c = (unsigned char)*s++) < 0200 || iscntrl(c)) 96 return (-1); 97 intcode = (intcode << 8) | (c & 0177); 98 } 99 if(wchar) 100 *wchar = intcode | mask; 101 return ((char *)s - olds); 102 } 103 104 105 size_t 106 _mbstowcs_euc(wchar_t *pwcs, char *s, size_t n) 107 { 108 int i, j; 109 110 j=0; 111 while(*s) { 112 if(j>=n) 113 break; 114 i=_mbtowc_euc(pwcs+j, s, MB_LEN_MAX); 115 if(i==-1) 116 return (-1); 117 s+=i; 118 ++j; 119 } 120 if(j<n) 121 pwcs[j]=0; 122 return (j); 123 } 124 125 126 size_t 127 _wcstombs_euc(char *s, wchar_t *pwcs, size_t n) 128 { 129 wchar_t wc; 130 int i; 131 int r=n; /* Rest of bytes. */ 132 char *t; 133 char mbbuf[MB_LEN_MAX+1]; 134 135 while(wc=(*pwcs++)) { 136 i=_wctomb_euc(mbbuf, wc); 137 138 if (i>r) 139 break; 140 if (i==-1) return (-1); 141 142 r-=i; 143 for (t=mbbuf;i>0;--i){ 144 /* Copy each byte. */ 145 *(s++)=*(t++); 146 } 147 } 148 if (r>0) 149 /* Has enough room for NUL. */ 150 *s=0; 151 return (n-r); 152 } 153 154 int 155 _wctomb_euc(char *s, wchar_t wchar) 156 { 157 eucwidth_t * eucinfo = (eucwidth_t *)_code_set_info.code_info; 158 char *olds = s; 159 int size, index; 160 unsigned char d; 161 if(!s) 162 return(0); 163 if( wchar <= 0177 || wchar <= 0377 && iscntrl(wchar)) { 164 *s++ = wchar; 165 return (wchar ? 1 : 0); 166 } 167 switch(wchar & EUCMASK) { 168 169 case MASK1: 170 size = EUCWID1; 171 break; 172 173 case MASK2: 174 *s++ = SS2; 175 size = EUCWID2; 176 break; 177 178 case MASK3: 179 *s++ = SS3; 180 size = EUCWID3; 181 break; 182 183 default: 184 return (-1); 185 } 186 index = size; 187 while(index--) { 188 d = wchar | 0200; 189 wchar >>= 8; 190 if(iscntrl(d)) 191 return (-1); 192 s[index] = d; 193 } 194 return (s + size - olds); 195 } 196