1*91e1e26aSAlexander Pyhalov /* 2*91e1e26aSAlexander Pyhalov * CDDL HEADER START 3*91e1e26aSAlexander Pyhalov * 4*91e1e26aSAlexander Pyhalov * The contents of this file are subject to the terms of the 5*91e1e26aSAlexander Pyhalov * Common Development and Distribution License (the "License"). 6*91e1e26aSAlexander Pyhalov * You may not use this file except in compliance with the License. 7*91e1e26aSAlexander Pyhalov * 8*91e1e26aSAlexander Pyhalov * You can obtain a copy of the license at src/OPENSOLARIS.LICENSE 9*91e1e26aSAlexander Pyhalov * or http://www.opensolaris.org/os/licensing. 10*91e1e26aSAlexander Pyhalov * See the License for the specific language governing permissions 11*91e1e26aSAlexander Pyhalov * and limitations under the License. 12*91e1e26aSAlexander Pyhalov * 13*91e1e26aSAlexander Pyhalov * When distributing Covered Code, include this CDDL HEADER in each 14*91e1e26aSAlexander Pyhalov * file and include the License file at src/OPENSOLARIS.LICENSE. 15*91e1e26aSAlexander Pyhalov * If applicable, add the following below this CDDL HEADER, with the 16*91e1e26aSAlexander Pyhalov * fields enclosed by brackets "[]" replaced with your own identifying 17*91e1e26aSAlexander Pyhalov * information: Portions Copyright [yyyy] [name of copyright owner] 18*91e1e26aSAlexander Pyhalov * 19*91e1e26aSAlexander Pyhalov * CDDL HEADER END 20*91e1e26aSAlexander Pyhalov */ 21*91e1e26aSAlexander Pyhalov /* 22*91e1e26aSAlexander Pyhalov * Copyright (c) 1994, 1995 by Sun Microsystems, Inc. 23*91e1e26aSAlexander Pyhalov * Copyright (c) 1994, Nihon Sun Microsystems K.K. 24*91e1e26aSAlexander Pyhalov * All Rights Reserved. 25*91e1e26aSAlexander Pyhalov */ 26*91e1e26aSAlexander Pyhalov 27*91e1e26aSAlexander Pyhalov #include <stdio.h> 28*91e1e26aSAlexander Pyhalov #include <stdlib.h> 29*91e1e26aSAlexander Pyhalov #include <errno.h> 30*91e1e26aSAlexander Pyhalov #include <ctype.h> 31*91e1e26aSAlexander Pyhalov 32*91e1e26aSAlexander Pyhalov #define MAGIC_NUMBER (0x216513) 33*91e1e26aSAlexander Pyhalov #define ERR_RETURN (-1) /* result code on error */ 34*91e1e26aSAlexander Pyhalov 35*91e1e26aSAlexander Pyhalov #define GET(c) ((c) = *ip, ip++, ileft--) 36*91e1e26aSAlexander Pyhalov #define PUT(c) (*op = (c), op++, oleft--) 37*91e1e26aSAlexander Pyhalov #define UNGET() (ip--, ileft++) 38*91e1e26aSAlexander Pyhalov 39*91e1e26aSAlexander Pyhalov 40*91e1e26aSAlexander Pyhalov /* 41*91e1e26aSAlexander Pyhalov * Open; called from iconv_open() 42*91e1e26aSAlexander Pyhalov */ 43*91e1e26aSAlexander Pyhalov void * 44*91e1e26aSAlexander Pyhalov _icv_open() 45*91e1e26aSAlexander Pyhalov { 46*91e1e26aSAlexander Pyhalov return ((void*)MAGIC_NUMBER); 47*91e1e26aSAlexander Pyhalov } 48*91e1e26aSAlexander Pyhalov 49*91e1e26aSAlexander Pyhalov 50*91e1e26aSAlexander Pyhalov /* 51*91e1e26aSAlexander Pyhalov * Close; called from iconv_close 52*91e1e26aSAlexander Pyhalov */ 53*91e1e26aSAlexander Pyhalov void 54*91e1e26aSAlexander Pyhalov _icv_close(int* cd) 55*91e1e26aSAlexander Pyhalov { 56*91e1e26aSAlexander Pyhalov if (!cd || cd != (int*)MAGIC_NUMBER) 57*91e1e26aSAlexander Pyhalov errno = EBADF; 58*91e1e26aSAlexander Pyhalov } 59*91e1e26aSAlexander Pyhalov 60*91e1e26aSAlexander Pyhalov 61*91e1e26aSAlexander Pyhalov /* 62*91e1e26aSAlexander Pyhalov * Actual conversion; called from iconv() 63*91e1e26aSAlexander Pyhalov */ 64*91e1e26aSAlexander Pyhalov size_t 65*91e1e26aSAlexander Pyhalov _icv_iconv(int* cd, char **inbuf, size_t *inbytesleft, 66*91e1e26aSAlexander Pyhalov char **outbuf, size_t *outbytesleft) 67*91e1e26aSAlexander Pyhalov { 68*91e1e26aSAlexander Pyhalov unsigned char *ip, ic, *op; 69*91e1e26aSAlexander Pyhalov size_t ileft, oleft; 70*91e1e26aSAlexander Pyhalov size_t retval = 0; 71*91e1e26aSAlexander Pyhalov 72*91e1e26aSAlexander Pyhalov if (!cd || cd != (int*)MAGIC_NUMBER) 73*91e1e26aSAlexander Pyhalov { 74*91e1e26aSAlexander Pyhalov errno = EBADF; 75*91e1e26aSAlexander Pyhalov return((size_t)ERR_RETURN); 76*91e1e26aSAlexander Pyhalov } 77*91e1e26aSAlexander Pyhalov 78*91e1e26aSAlexander Pyhalov if ((inbuf == 0) || (*inbuf == 0)) 79*91e1e26aSAlexander Pyhalov return((size_t)0); 80*91e1e26aSAlexander Pyhalov 81*91e1e26aSAlexander Pyhalov ip = (unsigned char*)*inbuf; 82*91e1e26aSAlexander Pyhalov op = (unsigned char *)*outbuf; 83*91e1e26aSAlexander Pyhalov ileft = *inbytesleft; 84*91e1e26aSAlexander Pyhalov oleft = *outbytesleft; 85*91e1e26aSAlexander Pyhalov 86*91e1e26aSAlexander Pyhalov /* 87*91e1e26aSAlexander Pyhalov * Main loop; basically 1 loop per 1 input byte 88*91e1e26aSAlexander Pyhalov */ 89*91e1e26aSAlexander Pyhalov 90*91e1e26aSAlexander Pyhalov while (ileft > 0) { 91*91e1e26aSAlexander Pyhalov GET(ic); 92*91e1e26aSAlexander Pyhalov if (oleft < 1) { 93*91e1e26aSAlexander Pyhalov UNGET(); 94*91e1e26aSAlexander Pyhalov errno = E2BIG; 95*91e1e26aSAlexander Pyhalov retval = ERR_RETURN; 96*91e1e26aSAlexander Pyhalov goto ret; 97*91e1e26aSAlexander Pyhalov } 98*91e1e26aSAlexander Pyhalov if (isascii(ic)) 99*91e1e26aSAlexander Pyhalov PUT(ic); 100*91e1e26aSAlexander Pyhalov else { 101*91e1e26aSAlexander Pyhalov PUT('_'); 102*91e1e26aSAlexander Pyhalov retval++; 103*91e1e26aSAlexander Pyhalov } 104*91e1e26aSAlexander Pyhalov } 105*91e1e26aSAlexander Pyhalov 106*91e1e26aSAlexander Pyhalov ret: 107*91e1e26aSAlexander Pyhalov *inbuf = (char *)ip; 108*91e1e26aSAlexander Pyhalov *inbytesleft = ileft; 109*91e1e26aSAlexander Pyhalov *outbuf = (char *)op; 110*91e1e26aSAlexander Pyhalov *outbytesleft = oleft; 111*91e1e26aSAlexander Pyhalov 112*91e1e26aSAlexander Pyhalov return (retval); 113*91e1e26aSAlexander Pyhalov } 114