1 /*        $NetBSD: conv_tab.c,v 1.10 2022/01/14 23:55:16 christos Exp $         */
2 
3 /*-
4  * Copyright (c) 1991, 1993
5  *        The Regents of the University of California.  All rights reserved.
6  *
7  * This code is derived from software contributed to Berkeley by
8  * Keith Muller of the University of California, San Diego and Lance
9  * Visser of Convex Computer Corporation.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions and the following disclaimer.
16  * 2. Redistributions in binary form must reproduce the above copyright
17  *    notice, this list of conditions and the following disclaimer in the
18  *    documentation and/or other materials provided with the distribution.
19  * 3. Neither the name of the University nor the names of its contributors
20  *    may be used to endorse or promote products derived from this software
21  *    without specific prior written permission.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33  * SUCH DAMAGE.
34  */
35 
36 #include <sys/cdefs.h>
37 #ifndef lint
38 #if 0
39 static char sccsid[] = "@(#)conv_tab.c  8.1 (Berkeley) 5/31/93";
40 #else
41 __RCSID("$NetBSD: conv_tab.c,v 1.10 2022/01/14 23:55:16 christos Exp $");
42 #endif
43 #endif /* not lint */
44 
45 #include <sys/types.h>
46 
47 /*
48  * There are currently six tables:
49  *
50  *        ebcdic              -> ascii  32V                 conv=oldascii
51  *        ascii               -> ebcdic 32V                 conv=oldebcdic
52  *        ascii               -> ibm ebcdic       32V                 conv=oldibm
53  *
54  *        ebcdic              -> ascii  POSIX/S5  conv=ascii
55  *        ascii               -> ebcdic POSIX/S5  conv=ebcdic
56  *        ascii               -> ibm ebcdic       POSIX/S5  conv=ibm
57  *
58  * Other tables are built from these if multiple conversions are being
59  * done.
60  *
61  * Tables used for conversions to/from IBM and EBCDIC to support an extension
62  * to POSIX P1003.2/D11. The tables referencing POSIX contain data extracted
63  * from tables 4-3 and 4-4 in P1003.2/Draft 11.  The historic tables were
64  * constructed by running against a file with all possible byte values.
65  *
66  * More information can be obtained in "Correspondences of 8-Bit and Hollerith
67  * Codes for Computer Environments-A USASI Tutorial", Communications of the
68  * ACM, Volume 11, Number 11, November 1968, pp. 783-789.
69  */
70 
71 u_char casetab[256];
72 
73 /* EBCDIC to ASCII -- 32V compatible. */
74 const u_char e2a_32V[] = {
75           0000, 0001, 0002, 0003, 0234, 0011, 0206, 0177,             /* 0000 */
76           0227, 0215, 0216, 0013, 0014, 0015, 0016, 0017,             /* 0010 */
77           0020, 0021, 0022, 0023, 0235, 0205, 0010, 0207,             /* 0020 */
78           0030, 0031, 0222, 0217, 0034, 0035, 0036, 0037,             /* 0030 */
79           0200, 0201, 0202, 0203, 0204, 0012, 0027, 0033,             /* 0040 */
80           0210, 0211, 0212, 0213, 0214, 0005, 0006, 0007,             /* 0050 */
81           0220, 0221, 0026, 0223, 0224, 0225, 0226, 0004,             /* 0060 */
82           0230, 0231, 0232, 0233, 0024, 0025, 0236, 0032,             /* 0070 */
83           0040, 0240, 0241, 0242, 0243, 0244, 0245, 0246,             /* 0100 */
84           0247, 0250, 0133, 0056, 0074, 0050, 0053, 0041,             /* 0110 */
85           0046, 0251, 0252, 0253, 0254, 0255, 0256, 0257,             /* 0120 */
86           0260, 0261, 0135, 0044, 0052, 0051, 0073, 0136,             /* 0130 */
87           0055, 0057, 0262, 0263, 0264, 0265, 0266, 0267,             /* 0140 */
88           0270, 0271, 0174, 0054, 0045, 0137, 0076, 0077,             /* 0150 */
89           0272, 0273, 0274, 0275, 0276, 0277, 0300, 0301,             /* 0160 */
90           0302, 0140, 0072, 0043, 0100, 0047, 0075, 0042,             /* 0170 */
91           0303, 0141, 0142, 0143, 0144, 0145, 0146, 0147,             /* 0200 */
92           0150, 0151, 0304, 0305, 0306, 0307, 0310, 0311,             /* 0210 */
93           0312, 0152, 0153, 0154, 0155, 0156, 0157, 0160,             /* 0220 */
94           0161, 0162, 0313, 0314, 0315, 0316, 0317, 0320,             /* 0230 */
95           0321, 0176, 0163, 0164, 0165, 0166, 0167, 0170,             /* 0240 */
96           0171, 0172, 0322, 0323, 0324, 0325, 0326, 0327,             /* 0250 */
97           0330, 0331, 0332, 0333, 0334, 0335, 0336, 0337,             /* 0260 */
98           0340, 0341, 0342, 0343, 0344, 0345, 0346, 0347,             /* 0270 */
99           0173, 0101, 0102, 0103, 0104, 0105, 0106, 0107,             /* 0300 */
100           0110, 0111, 0350, 0351, 0352, 0353, 0354, 0355,             /* 0310 */
101           0175, 0112, 0113, 0114, 0115, 0116, 0117, 0120,             /* 0320 */
102           0121, 0122, 0356, 0357, 0360, 0361, 0362, 0363,             /* 0330 */
103           0134, 0237, 0123, 0124, 0125, 0126, 0127, 0130,             /* 0340 */
104           0131, 0132, 0364, 0365, 0366, 0367, 0370, 0371,             /* 0350 */
105           0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067,             /* 0360 */
106           0070, 0071, 0372, 0373, 0374, 0375, 0376, 0377,             /* 0370 */
107 };
108 
109 /* ASCII to EBCDIC -- 32V compatible. */
110 const u_char a2e_32V[] = {
111           0000, 0001, 0002, 0003, 0067, 0055, 0056, 0057,             /* 0000 */
112           0026, 0005, 0045, 0013, 0014, 0015, 0016, 0017,             /* 0010 */
113           0020, 0021, 0022, 0023, 0074, 0075, 0062, 0046,             /* 0020 */
114           0030, 0031, 0077, 0047, 0034, 0035, 0036, 0037,             /* 0030 */
115           0100, 0117, 0177, 0173, 0133, 0154, 0120, 0175,             /* 0040 */
116           0115, 0135, 0134, 0116, 0153, 0140, 0113, 0141,             /* 0050 */
117           0360, 0361, 0362, 0363, 0364, 0365, 0366, 0367,             /* 0060 */
118           0370, 0371, 0172, 0136, 0114, 0176, 0156, 0157,             /* 0070 */
119           0174, 0301, 0302, 0303, 0304, 0305, 0306, 0307,             /* 0100 */
120           0310, 0311, 0321, 0322, 0323, 0324, 0325, 0326,             /* 0110 */
121           0327, 0330, 0331, 0342, 0343, 0344, 0345, 0346,             /* 0120 */
122           0347, 0350, 0351, 0112, 0340, 0132, 0137, 0155,             /* 0130 */
123           0171, 0201, 0202, 0203, 0204, 0205, 0206, 0207,             /* 0140 */
124           0210, 0211, 0221, 0222, 0223, 0224, 0225, 0226,             /* 0150 */
125           0227, 0230, 0231, 0242, 0243, 0244, 0245, 0246,             /* 0160 */
126           0247, 0250, 0251, 0300, 0152, 0320, 0241, 0007,             /* 0170 */
127           0040, 0041, 0042, 0043, 0044, 0025, 0006, 0027,             /* 0200 */
128           0050, 0051, 0052, 0053, 0054, 0011, 0012, 0033,             /* 0210 */
129           0060, 0061, 0032, 0063, 0064, 0065, 0066, 0010,             /* 0220 */
130           0070, 0071, 0072, 0073, 0004, 0024, 0076, 0341,             /* 0230 */
131           0101, 0102, 0103, 0104, 0105, 0106, 0107, 0110,             /* 0240 */
132           0111, 0121, 0122, 0123, 0124, 0125, 0126, 0127,             /* 0250 */
133           0130, 0131, 0142, 0143, 0144, 0145, 0146, 0147,             /* 0260 */
134           0150, 0151, 0160, 0161, 0162, 0163, 0164, 0165,             /* 0270 */
135           0166, 0167, 0170, 0200, 0212, 0213, 0214, 0215,             /* 0300 */
136           0216, 0217, 0220, 0232, 0233, 0234, 0235, 0236,             /* 0310 */
137           0237, 0240, 0252, 0253, 0254, 0255, 0256, 0257,             /* 0320 */
138           0260, 0261, 0262, 0263, 0264, 0265, 0266, 0267,             /* 0330 */
139           0270, 0271, 0272, 0273, 0274, 0275, 0276, 0277,             /* 0340 */
140           0312, 0313, 0314, 0315, 0316, 0317, 0332, 0333,             /* 0350 */
141           0334, 0335, 0336, 0337, 0352, 0353, 0354, 0355,             /* 0360 */
142           0356, 0357, 0372, 0373, 0374, 0375, 0376, 0377,             /* 0370 */
143 };
144 
145 /* EBCDIC to ASCII -- POSIX and System V compatible. */
146 const u_char e2a_POSIX[] = {
147           0000, 0001, 0002, 0003, 0234, 0011, 0206, 0177,             /* 0000 */
148           0227, 0215, 0216, 0013, 0014, 0015, 0016, 0017,             /* 0010 */
149           0020, 0021, 0022, 0023, 0235, 0205, 0010, 0207,             /* 0020 */
150           0030, 0031, 0222, 0217, 0034, 0035, 0036, 0037,             /* 0030 */
151           0200, 0201, 0202, 0203, 0204, 0012, 0027, 0033,             /* 0040 */
152           0210, 0211, 0212, 0213, 0214, 0005, 0006, 0007,             /* 0050 */
153           0220, 0221, 0026, 0223, 0224, 0225, 0226, 0004,             /* 0060 */
154           0230, 0231, 0232, 0233, 0024, 0025, 0236, 0032,             /* 0070 */
155           0040, 0240, 0241, 0242, 0243, 0244, 0245, 0246,             /* 0100 */
156           0247, 0250, 0325, 0056, 0074, 0050, 0053, 0174,             /* 0110 */
157           0046, 0251, 0252, 0253, 0254, 0255, 0256, 0257,             /* 0120 */
158           0260, 0261, 0041, 0044, 0052, 0051, 0073, 0176,             /* 0130 */
159           0055, 0057, 0262, 0263, 0264, 0265, 0266, 0267,             /* 0140 */
160           0270, 0271, 0313, 0054, 0045, 0137, 0076, 0077,             /* 0150 */
161           0272, 0273, 0274, 0275, 0276, 0277, 0300, 0301,             /* 0160 */
162           0302, 0140, 0072, 0043, 0100, 0047, 0075, 0042,             /* 0170 */
163           0303, 0141, 0142, 0143, 0144, 0145, 0146, 0147,             /* 0200 */
164           0150, 0151, 0304, 0305, 0306, 0307, 0310, 0311,             /* 0210 */
165           0312, 0152, 0153, 0154, 0155, 0156, 0157, 0160,             /* 0220 */
166           0161, 0162, 0136, 0314, 0315, 0316, 0317, 0320,             /* 0230 */
167           0321, 0345, 0163, 0164, 0165, 0166, 0167, 0170,             /* 0240 */
168           0171, 0172, 0322, 0323, 0324, 0133, 0326, 0327,             /* 0250 */
169           0330, 0331, 0332, 0333, 0334, 0335, 0336, 0337,             /* 0260 */
170           0340, 0341, 0342, 0343, 0344, 0135, 0346, 0347,             /* 0270 */
171           0173, 0101, 0102, 0103, 0104, 0105, 0106, 0107,             /* 0300 */
172           0110, 0111, 0350, 0351, 0352, 0353, 0354, 0355,             /* 0310 */
173           0175, 0112, 0113, 0114, 0115, 0116, 0117, 0120,             /* 0320 */
174           0121, 0122, 0356, 0357, 0360, 0361, 0362, 0363,             /* 0330 */
175           0134, 0237, 0123, 0124, 0125, 0126, 0127, 0130,             /* 0340 */
176           0131, 0132, 0364, 0365, 0366, 0367, 0370, 0371,             /* 0350 */
177           0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067,             /* 0360 */
178           0070, 0071, 0372, 0373, 0374, 0375, 0376, 0377,             /* 0370 */
179 };
180 
181 /* ASCII to EBCDIC -- POSIX and System V compatible. */
182 const u_char a2e_POSIX[] = {
183           0000, 0001, 0002, 0003, 0067, 0055, 0056, 0057,             /* 0000 */
184           0026, 0005, 0045, 0013, 0014, 0015, 0016, 0017,             /* 0010 */
185           0020, 0021, 0022, 0023, 0074, 0075, 0062, 0046,             /* 0020 */
186           0030, 0031, 0077, 0047, 0034, 0035, 0036, 0037,             /* 0030 */
187           0100, 0132, 0177, 0173, 0133, 0154, 0120, 0175,             /* 0040 */
188           0115, 0135, 0134, 0116, 0153, 0140, 0113, 0141,             /* 0050 */
189           0360, 0361, 0362, 0363, 0364, 0365, 0366, 0367,             /* 0060 */
190           0370, 0371, 0172, 0136, 0114, 0176, 0156, 0157,             /* 0070 */
191           0174, 0301, 0302, 0303, 0304, 0305, 0306, 0307,             /* 0100 */
192           0310, 0311, 0321, 0322, 0323, 0324, 0325, 0326,             /* 0110 */
193           0327, 0330, 0331, 0342, 0343, 0344, 0345, 0346,             /* 0120 */
194           0347, 0350, 0351, 0255, 0340, 0275, 0232, 0155,             /* 0130 */
195           0171, 0201, 0202, 0203, 0204, 0205, 0206, 0207,             /* 0140 */
196           0210, 0211, 0221, 0222, 0223, 0224, 0225, 0226,             /* 0150 */
197           0227, 0230, 0231, 0242, 0243, 0244, 0245, 0246,             /* 0160 */
198           0247, 0250, 0251, 0300, 0117, 0320, 0137, 0007,             /* 0170 */
199           0040, 0041, 0042, 0043, 0044, 0025, 0006, 0027,             /* 0200 */
200           0050, 0051, 0052, 0053, 0054, 0011, 0012, 0033,             /* 0210 */
201           0060, 0061, 0032, 0063, 0064, 0065, 0066, 0010,             /* 0220 */
202           0070, 0071, 0072, 0073, 0004, 0024, 0076, 0341,             /* 0230 */
203           0101, 0102, 0103, 0104, 0105, 0106, 0107, 0110,             /* 0240 */
204           0111, 0121, 0122, 0123, 0124, 0125, 0126, 0127,             /* 0250 */
205           0130, 0131, 0142, 0143, 0144, 0145, 0146, 0147,             /* 0260 */
206           0150, 0151, 0160, 0161, 0162, 0163, 0164, 0165,             /* 0270 */
207           0166, 0167, 0170, 0200, 0212, 0213, 0214, 0215,             /* 0300 */
208           0216, 0217, 0220, 0152, 0233, 0234, 0235, 0236,             /* 0310 */
209           0237, 0240, 0252, 0253, 0254, 0112, 0256, 0257,             /* 0320 */
210           0260, 0261, 0262, 0263, 0264, 0265, 0266, 0267,             /* 0330 */
211           0270, 0271, 0272, 0273, 0274, 0241, 0276, 0277,             /* 0340 */
212           0312, 0313, 0314, 0315, 0316, 0317, 0332, 0333,             /* 0350 */
213           0334, 0335, 0336, 0337, 0352, 0353, 0354, 0355,             /* 0360 */
214           0356, 0357, 0372, 0373, 0374, 0375, 0376, 0377,             /* 0370 */
215 };
216 
217 /* ASCII to IBM EBCDIC -- 32V, POSIX and System V compatible. */
218 const u_char a2ibm[] = {
219           0000, 0001, 0002, 0003, 0067, 0055, 0056, 0057,             /* 0000 */
220           0026, 0005, 0045, 0013, 0014, 0015, 0016, 0017,             /* 0010 */
221           0020, 0021, 0022, 0023, 0074, 0075, 0062, 0046,             /* 0020 */
222           0030, 0031, 0077, 0047, 0034, 0035, 0036, 0037,             /* 0030 */
223           0100, 0132, 0177, 0173, 0133, 0154, 0120, 0175,             /* 0040 */
224           0115, 0135, 0134, 0116, 0153, 0140, 0113, 0141,             /* 0050 */
225           0360, 0361, 0362, 0363, 0364, 0365, 0366, 0367,             /* 0060 */
226           0370, 0371, 0172, 0136, 0114, 0176, 0156, 0157,             /* 0070 */
227           0174, 0301, 0302, 0303, 0304, 0305, 0306, 0307,             /* 0100 */
228           0310, 0311, 0321, 0322, 0323, 0324, 0325, 0326,             /* 0110 */
229           0327, 0330, 0331, 0342, 0343, 0344, 0345, 0346,             /* 0120 */
230           0347, 0350, 0351, 0255, 0340, 0275, 0137, 0155,             /* 0130 */
231           0171, 0201, 0202, 0203, 0204, 0205, 0206, 0207,             /* 0140 */
232           0210, 0211, 0221, 0222, 0223, 0224, 0225, 0226,             /* 0150 */
233           0227, 0230, 0231, 0242, 0243, 0244, 0245, 0246,             /* 0160 */
234           0247, 0250, 0251, 0300, 0117, 0320, 0241, 0007,             /* 0170 */
235           0040, 0041, 0042, 0043, 0044, 0025, 0006, 0027,             /* 0200 */
236           0050, 0051, 0052, 0053, 0054, 0011, 0012, 0033,             /* 0210 */
237           0060, 0061, 0032, 0063, 0064, 0065, 0066, 0010,             /* 0220 */
238           0070, 0071, 0072, 0073, 0004, 0024, 0076, 0341,             /* 0230 */
239           0101, 0102, 0103, 0104, 0105, 0106, 0107, 0110,             /* 0240 */
240           0111, 0121, 0122, 0123, 0124, 0125, 0126, 0127,             /* 0250 */
241           0130, 0131, 0142, 0143, 0144, 0145, 0146, 0147,             /* 0260 */
242           0150, 0151, 0160, 0161, 0162, 0163, 0164, 0165,             /* 0270 */
243           0166, 0167, 0170, 0200, 0212, 0213, 0214, 0215,             /* 0300 */
244           0216, 0217, 0220, 0232, 0233, 0234, 0235, 0236,             /* 0310 */
245           0237, 0240, 0252, 0253, 0254, 0255, 0256, 0257,             /* 0320 */
246           0260, 0261, 0262, 0263, 0264, 0265, 0266, 0267,             /* 0330 */
247           0270, 0271, 0272, 0273, 0274, 0275, 0276, 0277,             /* 0340 */
248           0312, 0313, 0314, 0315, 0316, 0317, 0332, 0333,             /* 0350 */
249           0334, 0335, 0336, 0337, 0352, 0353, 0354, 0355,             /* 0360 */
250           0356, 0357, 0372, 0373, 0374, 0375, 0376, 0377,             /* 0370 */
251 };
252