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 "ibm_thai_api.h" 30 #include "common_thai.h" 31 32 /**** _ I C V _ O P E N ****/ 33 34 void* _icv_open() 35 { 36 return((void*)MAGIC_NUMBER); 37 } /* end of int _icv_open(). */ 38 39 40 /**** _ I C V _ C L O S E ****/ 41 42 void _icv_close(int* cd) 43 { 44 if (!cd || cd != (int*)MAGIC_NUMBER) 45 errno = EBADF; 46 } /* end of void _icv_close(int*). */ 47 48 49 /**** _ I C V _ I C O N V ****/ 50 51 size_t _icv_iconv(int* cd, char** inbuf, size_t* inbufleft, 52 char** outbuf, size_t* outbufleft) 53 { 54 size_t ret_val = 0; 55 unsigned char* ib; 56 unsigned char* ob; 57 unsigned char* ibtail; 58 unsigned char* obtail; 59 60 if (!cd || cd != (int*)MAGIC_NUMBER) 61 { 62 errno = EBADF; 63 return((size_t)-1); 64 } 65 66 if (!inbuf || !(*inbuf)) 67 return((size_t)0); 68 69 ib = (unsigned char*)*inbuf; 70 ob = (unsigned char*)*outbuf; 71 ibtail = ib + *inbufleft; 72 obtail = ob + *outbufleft; 73 74 while (ib < ibtail) 75 { 76 hcode_type euc_code, utf_code; 77 78 if ((ibtail - ib) < 1) 79 { 80 errno = EINVAL; 81 ret_val = (size_t)-1; 82 break; 83 } 84 85 /* euc_code.byte.byte4 is the variable */ 86 /* that would be sent to a function to */ 87 /* find the coversion and get the retu-*/ 88 /* -rned value to put back. */ 89 euc_code.code = 0; 90 euc_code.byte.byte4 = *ib; 91 92 utf_code = _874_to_838(euc_code); 93 94 if (utf_code.code != 0) 95 { 96 if ((obtail - ob) < 1) 97 { 98 errno = E2BIG; 99 ret_val = (size_t)-1; 100 break; 101 } 102 *ob++ = (char)utf_code.byte.byte4; 103 } 104 else /* FAILED - this means input char isn't belong to 105 * input codeset. */ 106 { 107 errno = EILSEQ; 108 ret_val = (size_t)-1; 109 break; 110 } 111 ib += 1; 112 } 113 114 *inbuf = (char*)ib; 115 *inbufleft = ibtail - ib; 116 *outbuf = (char*)ob; 117 *outbufleft = obtail - ob; 118 119 return(ret_val); 120 } /* end of size_t _icv_iconv(int*, char**, size_t*, char**, size_t*). */ 121