1 /*
2 * Copyright (c) Ian F. Darwin 1986-1995.
3 * Software written by Ian F. Darwin and others;
4 * maintained 1995-present by Christos Zoulas and others.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice immediately at the beginning of the file, without modification,
11 * this list of conditions, and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28 /*
29 * Encoding -- determine the character encoding of a text file.
30 *
31 * Joerg Wunsch <joerg@freebsd.org> wrote the original support for 8-bit
32 * international characters.
33 */
34
35 #include "file.h"
36
37 #ifndef lint
38 FILE_RCSID("@(#)$File: encoding.c,v 1.13 2015/06/04 19:16:28 christos Exp $")
39 #endif /* lint */
40
41 #include "magic.h"
42 #include <string.h>
43 #include <memory.h>
44 #include <stdlib.h>
45
46
47 private int looks_ascii(const unsigned char *, size_t, unichar *, size_t *);
48 private int looks_utf8_with_BOM(const unsigned char *, size_t, unichar *,
49 size_t *);
50 private int looks_utf7(const unsigned char *, size_t, unichar *, size_t *);
51 private int looks_ucs16(const unsigned char *, size_t, unichar *, size_t *);
52 private int looks_latin1(const unsigned char *, size_t, unichar *, size_t *);
53 private int looks_extended(const unsigned char *, size_t, unichar *, size_t *);
54 private void from_ebcdic(const unsigned char *, size_t, unsigned char *);
55
56 #ifdef DEBUG_ENCODING
57 #define DPRINTF(a) printf a
58 #else
59 #define DPRINTF(a)
60 #endif
61
62 /*
63 * Try to determine whether text is in some character code we can
64 * identify. Each of these tests, if it succeeds, will leave
65 * the text converted into one-unichar-per-character Unicode in
66 * ubuf, and the number of characters converted in ulen.
67 */
68 protected int
file_encoding(struct magic_set * ms,const unsigned char * buf,size_t nbytes,unichar ** ubuf,size_t * ulen,const char ** code,const char ** code_mime,const char ** type)69 file_encoding(struct magic_set *ms, const unsigned char *buf, size_t nbytes, unichar **ubuf, size_t *ulen, const char **code, const char **code_mime, const char **type)
70 {
71 size_t mlen;
72 int rv = 1, ucs_type;
73 unsigned char *nbuf = NULL;
74
75 *type = "text";
76 *ulen = 0;
77 *code = "unknown";
78 *code_mime = "binary";
79
80 mlen = (nbytes + 1) * sizeof((*ubuf)[0]);
81 if ((*ubuf = CAST(unichar *, calloc((size_t)1, mlen))) == NULL) {
82 file_oomem(ms, mlen);
83 goto done;
84 }
85 mlen = (nbytes + 1) * sizeof(nbuf[0]);
86 if ((nbuf = CAST(unsigned char *, calloc((size_t)1, mlen))) == NULL) {
87 file_oomem(ms, mlen);
88 goto done;
89 }
90
91 if (looks_ascii(buf, nbytes, *ubuf, ulen)) {
92 if (looks_utf7(buf, nbytes, *ubuf, ulen) > 0) {
93 DPRINTF(("utf-7 %" SIZE_T_FORMAT "u\n", *ulen));
94 *code = "UTF-7 Unicode";
95 *code_mime = "utf-7";
96 } else {
97 DPRINTF(("ascii %" SIZE_T_FORMAT "u\n", *ulen));
98 *code = "ASCII";
99 *code_mime = "us-ascii";
100 }
101 } else if (looks_utf8_with_BOM(buf, nbytes, *ubuf, ulen) > 0) {
102 DPRINTF(("utf8/bom %" SIZE_T_FORMAT "u\n", *ulen));
103 *code = "UTF-8 Unicode (with BOM)";
104 *code_mime = "utf-8";
105 } else if (file_looks_utf8(buf, nbytes, *ubuf, ulen) > 1) {
106 DPRINTF(("utf8 %" SIZE_T_FORMAT "u\n", *ulen));
107 *code = "UTF-8 Unicode";
108 *code_mime = "utf-8";
109 } else if ((ucs_type = looks_ucs16(buf, nbytes, *ubuf, ulen)) != 0) {
110 if (ucs_type == 1) {
111 *code = "Little-endian UTF-16 Unicode";
112 *code_mime = "utf-16le";
113 } else {
114 *code = "Big-endian UTF-16 Unicode";
115 *code_mime = "utf-16be";
116 }
117 DPRINTF(("ucs16 %" SIZE_T_FORMAT "u\n", *ulen));
118 } else if (looks_latin1(buf, nbytes, *ubuf, ulen)) {
119 DPRINTF(("latin1 %" SIZE_T_FORMAT "u\n", *ulen));
120 *code = "ISO-8859";
121 *code_mime = "iso-8859-1";
122 } else if (looks_extended(buf, nbytes, *ubuf, ulen)) {
123 DPRINTF(("extended %" SIZE_T_FORMAT "u\n", *ulen));
124 *code = "Non-ISO extended-ASCII";
125 *code_mime = "unknown-8bit";
126 } else {
127 from_ebcdic(buf, nbytes, nbuf);
128
129 if (looks_ascii(nbuf, nbytes, *ubuf, ulen)) {
130 DPRINTF(("ebcdic %" SIZE_T_FORMAT "u\n", *ulen));
131 *code = "EBCDIC";
132 *code_mime = "ebcdic";
133 } else if (looks_latin1(nbuf, nbytes, *ubuf, ulen)) {
134 DPRINTF(("ebcdic/international %" SIZE_T_FORMAT "u\n",
135 *ulen));
136 *code = "International EBCDIC";
137 *code_mime = "ebcdic";
138 } else { /* Doesn't look like text at all */
139 DPRINTF(("binary\n"));
140 rv = 0;
141 *type = "binary";
142 }
143 }
144
145 done:
146 free(nbuf);
147
148 return rv;
149 }
150
151 /*
152 * This table reflects a particular philosophy about what constitutes
153 * "text," and there is room for disagreement about it.
154 *
155 * Version 3.31 of the file command considered a file to be ASCII if
156 * each of its characters was approved by either the isascii() or
157 * isalpha() function. On most systems, this would mean that any
158 * file consisting only of characters in the range 0x00 ... 0x7F
159 * would be called ASCII text, but many systems might reasonably
160 * consider some characters outside this range to be alphabetic,
161 * so the file command would call such characters ASCII. It might
162 * have been more accurate to call this "considered textual on the
163 * local system" than "ASCII."
164 *
165 * It considered a file to be "International language text" if each
166 * of its characters was either an ASCII printing character (according
167 * to the real ASCII standard, not the above test), a character in
168 * the range 0x80 ... 0xFF, or one of the following control characters:
169 * backspace, tab, line feed, vertical tab, form feed, carriage return,
170 * escape. No attempt was made to determine the language in which files
171 * of this type were written.
172 *
173 *
174 * The table below considers a file to be ASCII if all of its characters
175 * are either ASCII printing characters (again, according to the X3.4
176 * standard, not isascii()) or any of the following controls: bell,
177 * backspace, tab, line feed, form feed, carriage return, esc, nextline.
178 *
179 * I include bell because some programs (particularly shell scripts)
180 * use it literally, even though it is rare in normal text. I exclude
181 * vertical tab because it never seems to be used in real text. I also
182 * include, with hesitation, the X3.64/ECMA-43 control nextline (0x85),
183 * because that's what the dd EBCDIC->ASCII table maps the EBCDIC newline
184 * character to. It might be more appropriate to include it in the 8859
185 * set instead of the ASCII set, but it's got to be included in *something*
186 * we recognize or EBCDIC files aren't going to be considered textual.
187 * Some old Unix source files use SO/SI (^N/^O) to shift between Greek
188 * and Latin characters, so these should possibly be allowed. But they
189 * make a real mess on VT100-style displays if they're not paired properly,
190 * so we are probably better off not calling them text.
191 *
192 * A file is considered to be ISO-8859 text if its characters are all
193 * either ASCII, according to the above definition, or printing characters
194 * from the ISO-8859 8-bit extension, characters 0xA0 ... 0xFF.
195 *
196 * Finally, a file is considered to be international text from some other
197 * character code if its characters are all either ISO-8859 (according to
198 * the above definition) or characters in the range 0x80 ... 0x9F, which
199 * ISO-8859 considers to be control characters but the IBM PC and Macintosh
200 * consider to be printing characters.
201 */
202
203 #define F 0 /* character never appears in text */
204 #define T 1 /* character appears in plain ASCII text */
205 #define I 2 /* character appears in ISO-8859 text */
206 #define X 3 /* character appears in non-ISO extended ASCII (Mac, IBM PC) */
207
208 private char text_chars[256] = {
209 /* BEL BS HT LF VT FF CR */
210 F, F, F, F, F, F, F, T, T, T, T, T, T, T, F, F, /* 0x0X */
211 /* ESC */
212 F, F, F, F, F, F, F, F, F, F, F, T, F, F, F, F, /* 0x1X */
213 T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, /* 0x2X */
214 T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, /* 0x3X */
215 T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, /* 0x4X */
216 T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, /* 0x5X */
217 T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, /* 0x6X */
218 T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, F, /* 0x7X */
219 /* NEL */
220 X, X, X, X, X, T, X, X, X, X, X, X, X, X, X, X, /* 0x8X */
221 X, X, X, X, X, X, X, X, X, X, X, X, X, X, X, X, /* 0x9X */
222 I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, /* 0xaX */
223 I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, /* 0xbX */
224 I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, /* 0xcX */
225 I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, /* 0xdX */
226 I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, /* 0xeX */
227 I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, I /* 0xfX */
228 };
229
230 private int
looks_ascii(const unsigned char * buf,size_t nbytes,unichar * ubuf,size_t * ulen)231 looks_ascii(const unsigned char *buf, size_t nbytes, unichar *ubuf,
232 size_t *ulen)
233 {
234 size_t i;
235
236 *ulen = 0;
237
238 for (i = 0; i < nbytes; i++) {
239 int t = text_chars[buf[i]];
240
241 if (t != T)
242 return 0;
243
244 ubuf[(*ulen)++] = buf[i];
245 }
246
247 return 1;
248 }
249
250 private int
looks_latin1(const unsigned char * buf,size_t nbytes,unichar * ubuf,size_t * ulen)251 looks_latin1(const unsigned char *buf, size_t nbytes, unichar *ubuf, size_t *ulen)
252 {
253 size_t i;
254
255 *ulen = 0;
256
257 for (i = 0; i < nbytes; i++) {
258 int t = text_chars[buf[i]];
259
260 if (t != T && t != I)
261 return 0;
262
263 ubuf[(*ulen)++] = buf[i];
264 }
265
266 return 1;
267 }
268
269 private int
looks_extended(const unsigned char * buf,size_t nbytes,unichar * ubuf,size_t * ulen)270 looks_extended(const unsigned char *buf, size_t nbytes, unichar *ubuf,
271 size_t *ulen)
272 {
273 size_t i;
274
275 *ulen = 0;
276
277 for (i = 0; i < nbytes; i++) {
278 int t = text_chars[buf[i]];
279
280 if (t != T && t != I && t != X)
281 return 0;
282
283 ubuf[(*ulen)++] = buf[i];
284 }
285
286 return 1;
287 }
288
289 /*
290 * Decide whether some text looks like UTF-8. Returns:
291 *
292 * -1: invalid UTF-8
293 * 0: uses odd control characters, so doesn't look like text
294 * 1: 7-bit text
295 * 2: definitely UTF-8 text (valid high-bit set bytes)
296 *
297 * If ubuf is non-NULL on entry, text is decoded into ubuf, *ulen;
298 * ubuf must be big enough!
299 */
300 protected int
file_looks_utf8(const unsigned char * buf,size_t nbytes,unichar * ubuf,size_t * ulen)301 file_looks_utf8(const unsigned char *buf, size_t nbytes, unichar *ubuf, size_t *ulen)
302 {
303 size_t i;
304 int n;
305 unichar c;
306 int gotone = 0, ctrl = 0;
307
308 if (ubuf)
309 *ulen = 0;
310
311 for (i = 0; i < nbytes; i++) {
312 if ((buf[i] & 0x80) == 0) { /* 0xxxxxxx is plain ASCII */
313 /*
314 * Even if the whole file is valid UTF-8 sequences,
315 * still reject it if it uses weird control characters.
316 */
317
318 if (text_chars[buf[i]] != T)
319 ctrl = 1;
320
321 if (ubuf)
322 ubuf[(*ulen)++] = buf[i];
323 } else if ((buf[i] & 0x40) == 0) { /* 10xxxxxx never 1st byte */
324 return -1;
325 } else { /* 11xxxxxx begins UTF-8 */
326 int following;
327
328 if ((buf[i] & 0x20) == 0) { /* 110xxxxx */
329 c = buf[i] & 0x1f;
330 following = 1;
331 } else if ((buf[i] & 0x10) == 0) { /* 1110xxxx */
332 c = buf[i] & 0x0f;
333 following = 2;
334 } else if ((buf[i] & 0x08) == 0) { /* 11110xxx */
335 c = buf[i] & 0x07;
336 following = 3;
337 } else if ((buf[i] & 0x04) == 0) { /* 111110xx */
338 c = buf[i] & 0x03;
339 following = 4;
340 } else if ((buf[i] & 0x02) == 0) { /* 1111110x */
341 c = buf[i] & 0x01;
342 following = 5;
343 } else
344 return -1;
345
346 for (n = 0; n < following; n++) {
347 i++;
348 if (i >= nbytes)
349 goto done;
350
351 if ((buf[i] & 0x80) == 0 || (buf[i] & 0x40))
352 return -1;
353
354 c = (c << 6) + (buf[i] & 0x3f);
355 }
356
357 if (ubuf)
358 ubuf[(*ulen)++] = c;
359 gotone = 1;
360 }
361 }
362 done:
363 return ctrl ? 0 : (gotone ? 2 : 1);
364 }
365
366 /*
367 * Decide whether some text looks like UTF-8 with BOM. If there is no
368 * BOM, return -1; otherwise return the result of looks_utf8 on the
369 * rest of the text.
370 */
371 private int
looks_utf8_with_BOM(const unsigned char * buf,size_t nbytes,unichar * ubuf,size_t * ulen)372 looks_utf8_with_BOM(const unsigned char *buf, size_t nbytes, unichar *ubuf,
373 size_t *ulen)
374 {
375 if (nbytes > 3 && buf[0] == 0xef && buf[1] == 0xbb && buf[2] == 0xbf)
376 return file_looks_utf8(buf + 3, nbytes - 3, ubuf, ulen);
377 else
378 return -1;
379 }
380
381 private int
looks_utf7(const unsigned char * buf,size_t nbytes,unichar * ubuf,size_t * ulen)382 looks_utf7(const unsigned char *buf, size_t nbytes, unichar *ubuf, size_t *ulen)
383 {
384 if (nbytes > 4 && buf[0] == '+' && buf[1] == '/' && buf[2] == 'v')
385 switch (buf[3]) {
386 case '8':
387 case '9':
388 case '+':
389 case '/':
390 if (ubuf)
391 *ulen = 0;
392 return 1;
393 default:
394 return -1;
395 }
396 else
397 return -1;
398 }
399
400 private int
looks_ucs16(const unsigned char * buf,size_t nbytes,unichar * ubuf,size_t * ulen)401 looks_ucs16(const unsigned char *buf, size_t nbytes, unichar *ubuf,
402 size_t *ulen)
403 {
404 int bigend;
405 size_t i;
406
407 if (nbytes < 2)
408 return 0;
409
410 if (buf[0] == 0xff && buf[1] == 0xfe)
411 bigend = 0;
412 else if (buf[0] == 0xfe && buf[1] == 0xff)
413 bigend = 1;
414 else
415 return 0;
416
417 *ulen = 0;
418
419 for (i = 2; i + 1 < nbytes; i += 2) {
420 /* XXX fix to properly handle chars > 65536 */
421
422 if (bigend)
423 ubuf[(*ulen)++] = buf[i + 1] + 256 * buf[i];
424 else
425 ubuf[(*ulen)++] = buf[i] + 256 * buf[i + 1];
426
427 if (ubuf[*ulen - 1] == 0xfffe)
428 return 0;
429 if (ubuf[*ulen - 1] < 128 &&
430 text_chars[(size_t)ubuf[*ulen - 1]] != T)
431 return 0;
432 }
433
434 return 1 + bigend;
435 }
436
437 #undef F
438 #undef T
439 #undef I
440 #undef X
441
442 /*
443 * This table maps each EBCDIC character to an (8-bit extended) ASCII
444 * character, as specified in the rationale for the dd(1) command in
445 * draft 11.2 (September, 1991) of the POSIX P1003.2 standard.
446 *
447 * Unfortunately it does not seem to correspond exactly to any of the
448 * five variants of EBCDIC documented in IBM's _Enterprise Systems
449 * Architecture/390: Principles of Operation_, SA22-7201-06, Seventh
450 * Edition, July, 1999, pp. I-1 - I-4.
451 *
452 * Fortunately, though, all versions of EBCDIC, including this one, agree
453 * on most of the printing characters that also appear in (7-bit) ASCII.
454 * Of these, only '|', '!', '~', '^', '[', and ']' are in question at all.
455 *
456 * Fortunately too, there is general agreement that codes 0x00 through
457 * 0x3F represent control characters, 0x41 a nonbreaking space, and the
458 * remainder printing characters.
459 *
460 * This is sufficient to allow us to identify EBCDIC text and to distinguish
461 * between old-style and internationalized examples of text.
462 */
463
464 private unsigned char ebcdic_to_ascii[] = {
465 0, 1, 2, 3, 156, 9, 134, 127, 151, 141, 142, 11, 12, 13, 14, 15,
466 16, 17, 18, 19, 157, 133, 8, 135, 24, 25, 146, 143, 28, 29, 30, 31,
467 128, 129, 130, 131, 132, 10, 23, 27, 136, 137, 138, 139, 140, 5, 6, 7,
468 144, 145, 22, 147, 148, 149, 150, 4, 152, 153, 154, 155, 20, 21, 158, 26,
469 ' ', 160, 161, 162, 163, 164, 165, 166, 167, 168, 213, '.', '<', '(', '+', '|',
470 '&', 169, 170, 171, 172, 173, 174, 175, 176, 177, '!', '$', '*', ')', ';', '~',
471 '-', '/', 178, 179, 180, 181, 182, 183, 184, 185, 203, ',', '%', '_', '>', '?',
472 186, 187, 188, 189, 190, 191, 192, 193, 194, '`', ':', '#', '@', '\'','=', '"',
473 195, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 196, 197, 198, 199, 200, 201,
474 202, 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', '^', 204, 205, 206, 207, 208,
475 209, 229, 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 210, 211, 212, '[', 214, 215,
476 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, ']', 230, 231,
477 '{', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 232, 233, 234, 235, 236, 237,
478 '}', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 238, 239, 240, 241, 242, 243,
479 '\\',159, 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 244, 245, 246, 247, 248, 249,
480 '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 250, 251, 252, 253, 254, 255
481 };
482
483 #ifdef notdef
484 /*
485 * The following EBCDIC-to-ASCII table may relate more closely to reality,
486 * or at least to modern reality. It comes from
487 *
488 * http://ftp.s390.ibm.com/products/oe/bpxqp9.html
489 *
490 * and maps the characters of EBCDIC code page 1047 (the code used for
491 * Unix-derived software on IBM's 390 systems) to the corresponding
492 * characters from ISO 8859-1.
493 *
494 * If this table is used instead of the above one, some of the special
495 * cases for the NEL character can be taken out of the code.
496 */
497
498 private unsigned char ebcdic_1047_to_8859[] = {
499 0x00,0x01,0x02,0x03,0x9C,0x09,0x86,0x7F,0x97,0x8D,0x8E,0x0B,0x0C,0x0D,0x0E,0x0F,
500 0x10,0x11,0x12,0x13,0x9D,0x0A,0x08,0x87,0x18,0x19,0x92,0x8F,0x1C,0x1D,0x1E,0x1F,
501 0x80,0x81,0x82,0x83,0x84,0x85,0x17,0x1B,0x88,0x89,0x8A,0x8B,0x8C,0x05,0x06,0x07,
502 0x90,0x91,0x16,0x93,0x94,0x95,0x96,0x04,0x98,0x99,0x9A,0x9B,0x14,0x15,0x9E,0x1A,
503 0x20,0xA0,0xE2,0xE4,0xE0,0xE1,0xE3,0xE5,0xE7,0xF1,0xA2,0x2E,0x3C,0x28,0x2B,0x7C,
504 0x26,0xE9,0xEA,0xEB,0xE8,0xED,0xEE,0xEF,0xEC,0xDF,0x21,0x24,0x2A,0x29,0x3B,0x5E,
505 0x2D,0x2F,0xC2,0xC4,0xC0,0xC1,0xC3,0xC5,0xC7,0xD1,0xA6,0x2C,0x25,0x5F,0x3E,0x3F,
506 0xF8,0xC9,0xCA,0xCB,0xC8,0xCD,0xCE,0xCF,0xCC,0x60,0x3A,0x23,0x40,0x27,0x3D,0x22,
507 0xD8,0x61,0x62,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0xAB,0xBB,0xF0,0xFD,0xFE,0xB1,
508 0xB0,0x6A,0x6B,0x6C,0x6D,0x6E,0x6F,0x70,0x71,0x72,0xAA,0xBA,0xE6,0xB8,0xC6,0xA4,
509 0xB5,0x7E,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A,0xA1,0xBF,0xD0,0x5B,0xDE,0xAE,
510 0xAC,0xA3,0xA5,0xB7,0xA9,0xA7,0xB6,0xBC,0xBD,0xBE,0xDD,0xA8,0xAF,0x5D,0xB4,0xD7,
511 0x7B,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0xAD,0xF4,0xF6,0xF2,0xF3,0xF5,
512 0x7D,0x4A,0x4B,0x4C,0x4D,0x4E,0x4F,0x50,0x51,0x52,0xB9,0xFB,0xFC,0xF9,0xFA,0xFF,
513 0x5C,0xF7,0x53,0x54,0x55,0x56,0x57,0x58,0x59,0x5A,0xB2,0xD4,0xD6,0xD2,0xD3,0xD5,
514 0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0xB3,0xDB,0xDC,0xD9,0xDA,0x9F
515 };
516 #endif
517
518 /*
519 * Copy buf[0 ... nbytes-1] into out[], translating EBCDIC to ASCII.
520 */
521 private void
from_ebcdic(const unsigned char * buf,size_t nbytes,unsigned char * out)522 from_ebcdic(const unsigned char *buf, size_t nbytes, unsigned char *out)
523 {
524 size_t i;
525
526 for (i = 0; i < nbytes; i++) {
527 out[i] = ebcdic_to_ascii[buf[i]];
528 }
529 }
530
