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) 1996 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 "ojh_utf_api.h" 31 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 Johap code */ 78 { 79 hcode_type ojh_code, utf_code; 80 81 if ((ibtail - ib) < 2) 82 { 83 errno = EINVAL; 84 ret_val = (size_t)-1; 85 break; 86 } 87 88 ojh_code.code = 0; 89 ojh_code.byte.byte3 = *ib; 90 ojh_code.byte.byte4 = *(ib + 1); 91 92 utf_code = _johap82_to_utf8(ojh_code); 93 94 if (utf_code.code != 0) 95 { 96 if ((obtail - ob) < 3) 97 { 98 errno = E2BIG; 99 ret_val = (size_t)-1; 100 break; 101 } 102 /* UTF8 code from 2 bytes is always 3 bytes */ 103 *ob++ = (char)utf_code.byte.byte2; 104 *ob++ = (char)utf_code.byte.byte3; 105 *ob++ = (char)utf_code.byte.byte4; 106 } 107 else /* FAILED - this means input char isn't belong to 108 * input codeset. */ 109 { 110 errno = EILSEQ; 111 ret_val = (size_t)-1; 112 break; 113 } 114 ib += 2; 115 116 } 117 else /* CS0 */ 118 { 119 if (ob >= obtail) 120 { 121 errno = E2BIG; 122 ret_val = (size_t)-1; 123 break; 124 } 125 *ob++ = *ib++; 126 } 127 } 128 129 *inbuf = (char*)ib; 130 *inbufleft = ibtail - ib; 131 *outbuf = (char*)ob; 132 *outbufleft = obtail - ob; 133 134 return(ret_val); 135 } /* end of size_t _icv_iconv(int*, char**, size_t*, char**, size_t*). */ 136