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) 1999 by Sun Microsystems, Inc. 23 */ 24 25 26 #include <errno.h> 27 #include <widec.h> 28 #include "common_def.h" 29 #include "common_han.h" 30 #include "uhang_utf_api.h" 31 #include "euc_utf_api.h" 32 33 /**** _ I C V _ O P E N ****/ 34 35 void* _icv_open() 36 { 37 return((void*)MAGIC_NUMBER); 38 } /* end of int _icv_open(). */ 39 40 41 /**** _ I C V _ C L O S E ****/ 42 43 void _icv_close(int* cd) 44 { 45 if (!cd || cd != (int*)MAGIC_NUMBER) 46 errno = EBADF; 47 } /* end of void _icv_close(int*). */ 48 49 50 /**** _ I C V _ I C O N V ****/ 51 52 size_t _icv_iconv(int* cd, char** inbuf, size_t* inbufleft, 53 char** outbuf, size_t* outbufleft) 54 { 55 size_t ret_val = 0; 56 unsigned char* ib; 57 unsigned char* ob; 58 unsigned char* ibtail; 59 unsigned char* obtail; 60 61 if (!cd || cd != (int*)MAGIC_NUMBER) 62 { 63 errno = EBADF; 64 return((size_t)-1); 65 } 66 67 if (!inbuf || !(*inbuf)) 68 return((size_t)0); 69 70 ib = (unsigned char*)*inbuf; 71 ob = (unsigned char*)*outbuf; 72 ibtail = ib + *inbufleft; 73 obtail = ob + *outbufleft; 74 75 while (ib < ibtail) 76 { 77 if (*ib & 0x80) /* Korean EUC doesn't have CS2 or CS3. */ 78 { 79 hcode_type euc_code, utf_code; 80 int flag; 81 82 flag = 0; 83 84 if ((ibtail - ib) < 2) 85 { 86 errno = EINVAL; 87 ret_val = (size_t)-1; 88 break; 89 } 90 91 92 if(*ib<0xA1) 93 { 94 if((*(ib+1)>0x40 && *(ib+1)<0x5B) || (*(ib+1)>0x60 && *(ib+1)<0x7B) || (*(ib+1)>0x80 && *(ib+1)<0xFF)) 95 flag = 0; 96 else 97 flag = 1; 98 99 } 100 else 101 { 102 if(*ib<0xC7) 103 { 104 if((*(ib+1)>0x40 && *(ib+1)<0x5B) || (*(ib+1)>0x60 && *(ib+1)<0x7B) || (*(ib+1)>0x80 && *(ib+1)<0xFF)) 105 flag = 0; 106 else 107 flag = 1; 108 } 109 else 110 { 111 if(*(ib+1)>0xA0 && *(ib+1)<0xFF) 112 flag = 0; 113 else 114 flag = 1; 115 } 116 117 } 118 119 if(flag) 120 { 121 errno = EILSEQ; 122 ret_val = (size_t)-1; 123 break; 124 } 125 126 euc_code.code = 0; 127 euc_code.byte.byte3 = *ib; 128 euc_code.byte.byte4 = *(ib + 1); 129 utf_code = _unified_hangul_to_utf8(euc_code); 130 131 if (utf_code.code != 0) 132 { 133 if ((obtail - ob) < 3) 134 { 135 errno = E2BIG; 136 ret_val = (size_t)-1; 137 break; 138 } 139 /* UTF8 code from 2 bytes is always 3 bytes */ 140 if(utf_code.byte.byte2) 141 *ob++ = (char)utf_code.byte.byte2; 142 *ob++ = (char)utf_code.byte.byte3; 143 *ob++ = (char)utf_code.byte.byte4; 144 } 145 else /* FAILED - this means input char doesn't belong to 146 * input codeset. */ 147 { 148 errno = EILSEQ; 149 ret_val = (size_t)-1; 150 break; 151 } 152 ib += 2; 153 154 } 155 else /* CS0 */ 156 { 157 if (ob >= obtail) 158 { 159 errno = E2BIG; 160 ret_val = (size_t)-1; 161 break; 162 } 163 *ob++ = *ib++; 164 } 165 } 166 167 *inbuf = (char*)ib; 168 *inbufleft = ibtail - ib; 169 *outbuf = (char*)ob; 170 *outbufleft = obtail - ob; 171 172 return(ret_val); 173 } /* end of size_t _icv_iconv(int*, char**, size_t*, char**, size_t*). */ 174