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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright (c) 1994, Sun Microsystems, Inc. 23 * Copyright (c) 1994, Nihon Sun Microsystems K.K. 24 */ 25 26 #include <stdio.h> 27 #include <stdlib.h> 28 #include <errno.h> 29 #include <euc.h> 30 #include "japanese.h" 31 32 /* 33 * struct _cv_state; to keep status 34 */ 35 struct _icv_state { 36 int _st_cset; 37 int _st_stat; 38 }; 39 40 extern int errno; 41 42 /* 43 * Open; called from iconv_open(); as taken unchanged from @(#)ISO-2022-JP%SJIS. 44 */ 45 void * 46 _icv_open() 47 { 48 struct _icv_state *st; 49 50 if ((st = (struct _icv_state *)malloc(sizeof(struct _icv_state))) 51 == NULL) 52 return ((void *)ERR_RETURN); 53 54 st->_st_cset = CS_0; 55 st->_st_stat = ST_INIT; 56 57 return (st); 58 } 59 60 61 /* 62 * Close; called from iconv_close(); as taken unchanged from @(#)ISO-2022-JP%SJIS. 63 */ 64 void 65 _icv_close(struct _icv_state *st) 66 { 67 free(st); 68 } 69 70 71 72 /* 73 * Actual conversion; called from iconv() 74 */ 75 size_t 76 _icv_iconv(struct _icv_state *st, char **inbuf, size_t *inbytesleft, 77 char **outbuf, size_t *outbytesleft) 78 { 79 int cset, stat; 80 unsigned char *op, ic; 81 char *ip; 82 size_t ileft, oleft; 83 size_t retval; 84 85 cset = st->_st_cset; 86 stat = st->_st_stat; 87 88 /* 89 * If (inbuf == 0 || *inbuf == 0) then this conversion is 90 * placed into initial state. 91 */ 92 if ((inbuf == 0) || (*inbuf == 0)) { 93 cset = CS_0; 94 stat = ST_INIT; 95 op = (unsigned char *)*outbuf; 96 oleft = *outbytesleft; 97 retval = 0; 98 goto ret2; 99 } 100 101 ip = *inbuf; 102 op = (unsigned char *)*outbuf; 103 ileft = *inbytesleft; 104 oleft = *outbytesleft; 105 /* Everything down to here was taken unchanged from @(#)ISO-2022-JP%SJIS. 106 ======================================================================= 107 108 * 109 * Main loop; basically 1 loop per 1 input byte 110 */ 111 112 while (ileft > 0) 113 { 114 GET(ic); 115 /* 116 If the char is one of the following [ / ] { | } then convert 117 it to its corresponding value. In all other cases if the char 118 is greater than octal \178 ( ie a high bit char) convert it 119 to an underscore (_), as it has no mapping to 7 bit ASCII. 120 Otrherwise the char is the same in both cose sets. 121 */ 122 if ( ic == '@' ) 123 ic = '_'; 124 else if ( ic == '[' ) 125 ic = '_'; 126 else if ( ic == '\\' ) 127 ic = '_'; 128 else if ( ic == ']' ) 129 ic = '_'; 130 else if ( ic == '{' ) 131 ic = '_'; 132 else if ( ic == '|' ) 133 ic = '_'; 134 else if ( ic == '}' ) 135 ic = '_'; 136 else if ( ic == 241 ) 137 ic = '|'; 138 else if ( ic == 161 ) 139 ic = '['; 140 else if ( ic == 167 ) 141 ic = '\100'; 142 else if ( ic == 176 ) 143 ic = '{'; 144 else if ( ic == 191 ) 145 ic = ']'; 146 else if ( ic == 209 ) 147 ic = '\\'; 148 else if ( ic == 231 ) 149 ic = '}'; 150 else if (ic > '\177') 151 ic = '_'; 152 153 154 155 156 157 /* switch ( ic ) 158 { 159 case '@' : 160 ic = '_'; 161 break; 162 case '[' : 163 ic = '_'; 164 break; 165 case '\\' : 166 ic = '_'; 167 break; 168 case ']' : 169 ic = '_'; 170 break; 171 case '{' : 172 ic = '_'; 173 break; 174 case '|' : 175 ic = '_'; 176 break; 177 case '}' : 178 ic = '_'; 179 break; 180 case 241 : 181 ic = '|'; 182 break; 183 case 161 : 184 ic = ']'; 185 break; 186 case 167 : 187 ic = '\100'; 188 break; 189 case 176 : 190 ic = '{'; 191 break; 192 case 191 : 193 ic = ']'; 194 break; 195 case 209 : 196 ic = '\\'; 197 break; 198 case 231 : 199 ic = '}'; 200 break; 201 default : 202 if (ic > '\177') 203 ic = '_'; 204 break; 205 } */ 206 207 PUT(ic); 208 /* 209 Put the converted character into the output buffer, and decrement 210 the count of chars left in both the in and out buffers. 211 If we have no space left in the out buffer, but we have no reached 212 the end of the input buffer. We return what we have, and set the 213 errno (Error) to E2BIG. 214 */ 215 if ((oleft < 1) && (ileft > 0)) 216 { 217 errno = E2BIG; 218 retval = ERR_RETURN; 219 goto ret; 220 } 221 222 223 } 224 /* 225 We only get here if the end of the in buffer has been reached, we therefore return the 226 value 0 to denote that we have sucesfully converted the inbuffer. 227 */ 228 retval = ileft; 229 230 /* Taken unchanged from @(#)ISO-2022-JP%SJIS. */ 231 232 ret: 233 st->_st_cset = cset; 234 st->_st_stat = stat; 235 *inbuf = ip; 236 *inbytesleft = ileft; 237 ret2: 238 *outbuf = (char *)op; 239 *outbytesleft = oleft; 240 241 return (retval); 242 } 243