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 *
_icv_open()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
_icv_close(int * cd)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
_icv_iconv(int * cd,char ** inbuf,size_t * inbytesleft,char ** outbuf,size_t * outbytesleft)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