1 /* $NetBSD: encoding.c,v 1.9 2019/12/17 02:31:05 christos Exp $ */ 2 3 /* 4 * Copyright (c) Ian F. Darwin 1986-1995. 5 * Software written by Ian F. Darwin and others; 6 * maintained 1995-present by Christos Zoulas and others. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice immediately at the beginning of the file, without modification, 13 * this list of conditions, and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 22 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 /* 31 * Encoding -- determine the character encoding of a text file. 32 * 33 * Joerg Wunsch <joerg@freebsd.org> wrote the original support for 8-bit 34 * international characters. 35 */ 36 37 #include "file.h" 38 39 #ifndef lint 40 #if 0 41 FILE_RCSID("@(#)$File: encoding.c,v 1.21 2019/06/08 20:49:14 christos Exp $") 42 #else 43 __RCSID("$NetBSD: encoding.c,v 1.9 2019/12/17 02:31:05 christos Exp $"); 44 #endif 45 #endif /* lint */ 46 47 #include "magic.h" 48 #include <string.h> 49 #include <stdlib.h> 50 51 52 private int looks_ascii(const unsigned char *, size_t, unichar *, size_t *); 53 private int looks_utf8_with_BOM(const unsigned char *, size_t, unichar *, 54 size_t *); 55 private int looks_utf7(const unsigned char *, size_t, unichar *, size_t *); 56 private int looks_ucs16(const unsigned char *, size_t, unichar *, size_t *); 57 private int looks_ucs32(const unsigned char *, size_t, unichar *, size_t *); 58 private int looks_latin1(const unsigned char *, size_t, unichar *, size_t *); 59 private int looks_extended(const unsigned char *, size_t, unichar *, size_t *); 60 private void from_ebcdic(const unsigned char *, size_t, unsigned char *); 61 62 #ifdef DEBUG_ENCODING 63 #define DPRINTF(a) printf a 64 #else 65 #define DPRINTF(a) 66 #endif 67 68 /* 69 * Try to determine whether text is in some character code we can 70 * identify. Each of these tests, if it succeeds, will leave 71 * the text converted into one-unichar-per-character Unicode in 72 * ubuf, and the number of characters converted in ulen. 73 */ 74 protected int 75 file_encoding(struct magic_set *ms, const struct buffer *b, unichar **ubuf, 76 size_t *ulen, const char **code, const char **code_mime, const char **type) 77 { 78 const unsigned char *buf = CAST(const unsigned char *, b->fbuf); 79 size_t nbytes = b->flen; 80 size_t mlen; 81 int rv = 1, ucs_type; 82 unsigned char *nbuf = NULL; 83 unichar *udefbuf; 84 size_t udeflen; 85 86 if (ubuf == NULL) 87 ubuf = &udefbuf; 88 if (ulen == NULL) 89 ulen = &udeflen; 90 91 *type = "text"; 92 *ulen = 0; 93 *code = "unknown"; 94 *code_mime = "binary"; 95 96 mlen = (nbytes + 1) * sizeof((*ubuf)[0]); 97 if ((*ubuf = CAST(unichar *, calloc(CAST(size_t, 1), mlen))) == NULL) { 98 file_oomem(ms, mlen); 99 goto done; 100 } 101 mlen = (nbytes + 1) * sizeof(nbuf[0]); 102 if ((nbuf = CAST(unsigned char *, 103 calloc(CAST(size_t, 1), mlen))) == NULL) { 104 file_oomem(ms, mlen); 105 goto done; 106 } 107 108 if (looks_ascii(buf, nbytes, *ubuf, ulen)) { 109 if (looks_utf7(buf, nbytes, *ubuf, ulen) > 0) { 110 DPRINTF(("utf-7 %" SIZE_T_FORMAT "u\n", *ulen)); 111 *code = "UTF-7 Unicode"; 112 *code_mime = "utf-7"; 113 } else { 114 DPRINTF(("ascii %" SIZE_T_FORMAT "u\n", *ulen)); 115 *code = "ASCII"; 116 *code_mime = "us-ascii"; 117 } 118 } else if (looks_utf8_with_BOM(buf, nbytes, *ubuf, ulen) > 0) { 119 DPRINTF(("utf8/bom %" SIZE_T_FORMAT "u\n", *ulen)); 120 *code = "UTF-8 Unicode (with BOM)"; 121 *code_mime = "utf-8"; 122 } else if (file_looks_utf8(buf, nbytes, *ubuf, ulen) > 1) { 123 DPRINTF(("utf8 %" SIZE_T_FORMAT "u\n", *ulen)); 124 *code = "UTF-8 Unicode"; 125 *code_mime = "utf-8"; 126 } else if ((ucs_type = looks_ucs32(buf, nbytes, *ubuf, ulen)) != 0) { 127 if (ucs_type == 1) { 128 *code = "Little-endian UTF-32 Unicode"; 129 *code_mime = "utf-32le"; 130 } else { 131 *code = "Big-endian UTF-32 Unicode"; 132 *code_mime = "utf-32be"; 133 } 134 DPRINTF(("ucs32 %" SIZE_T_FORMAT "u\n", *ulen)); 135 } else if ((ucs_type = looks_ucs16(buf, nbytes, *ubuf, ulen)) != 0) { 136 if (ucs_type == 1) { 137 *code = "Little-endian UTF-16 Unicode"; 138 *code_mime = "utf-16le"; 139 } else { 140 *code = "Big-endian UTF-16 Unicode"; 141 *code_mime = "utf-16be"; 142 } 143 DPRINTF(("ucs16 %" SIZE_T_FORMAT "u\n", *ulen)); 144 } else if (looks_latin1(buf, nbytes, *ubuf, ulen)) { 145 DPRINTF(("latin1 %" SIZE_T_FORMAT "u\n", *ulen)); 146 *code = "ISO-8859"; 147 *code_mime = "iso-8859-1"; 148 } else if (looks_extended(buf, nbytes, *ubuf, ulen)) { 149 DPRINTF(("extended %" SIZE_T_FORMAT "u\n", *ulen)); 150 *code = "Non-ISO extended-ASCII"; 151 *code_mime = "unknown-8bit"; 152 } else { 153 from_ebcdic(buf, nbytes, nbuf); 154 155 if (looks_ascii(nbuf, nbytes, *ubuf, ulen)) { 156 DPRINTF(("ebcdic %" SIZE_T_FORMAT "u\n", *ulen)); 157 *code = "EBCDIC"; 158 *code_mime = "ebcdic"; 159 } else if (looks_latin1(nbuf, nbytes, *ubuf, ulen)) { 160 DPRINTF(("ebcdic/international %" SIZE_T_FORMAT "u\n", 161 *ulen)); 162 *code = "International EBCDIC"; 163 *code_mime = "ebcdic"; 164 } else { /* Doesn't look like text at all */ 165 DPRINTF(("binary\n")); 166 rv = 0; 167 *type = "binary"; 168 } 169 } 170 171 done: 172 free(nbuf); 173 if (ubuf == &udefbuf) 174 free(udefbuf); 175 176 return rv; 177 } 178 179 /* 180 * This table reflects a particular philosophy about what constitutes 181 * "text," and there is room for disagreement about it. 182 * 183 * Version 3.31 of the file command considered a file to be ASCII if 184 * each of its characters was approved by either the isascii() or 185 * isalpha() function. On most systems, this would mean that any 186 * file consisting only of characters in the range 0x00 ... 0x7F 187 * would be called ASCII text, but many systems might reasonably 188 * consider some characters outside this range to be alphabetic, 189 * so the file command would call such characters ASCII. It might 190 * have been more accurate to call this "considered textual on the 191 * local system" than "ASCII." 192 * 193 * It considered a file to be "International language text" if each 194 * of its characters was either an ASCII printing character (according 195 * to the real ASCII standard, not the above test), a character in 196 * the range 0x80 ... 0xFF, or one of the following control characters: 197 * backspace, tab, line feed, vertical tab, form feed, carriage return, 198 * escape. No attempt was made to determine the language in which files 199 * of this type were written. 200 * 201 * 202 * The table below considers a file to be ASCII if all of its characters 203 * are either ASCII printing characters (again, according to the X3.4 204 * standard, not isascii()) or any of the following controls: bell, 205 * backspace, tab, line feed, form feed, carriage return, esc, nextline. 206 * 207 * I include bell because some programs (particularly shell scripts) 208 * use it literally, even though it is rare in normal text. I exclude 209 * vertical tab because it never seems to be used in real text. I also 210 * include, with hesitation, the X3.64/ECMA-43 control nextline (0x85), 211 * because that's what the dd EBCDIC->ASCII table maps the EBCDIC newline 212 * character to. It might be more appropriate to include it in the 8859 213 * set instead of the ASCII set, but it's got to be included in *something* 214 * we recognize or EBCDIC files aren't going to be considered textual. 215 * Some old Unix source files use SO/SI (^N/^O) to shift between Greek 216 * and Latin characters, so these should possibly be allowed. But they 217 * make a real mess on VT100-style displays if they're not paired properly, 218 * so we are probably better off not calling them text. 219 * 220 * A file is considered to be ISO-8859 text if its characters are all 221 * either ASCII, according to the above definition, or printing characters 222 * from the ISO-8859 8-bit extension, characters 0xA0 ... 0xFF. 223 * 224 * Finally, a file is considered to be international text from some other 225 * character code if its characters are all either ISO-8859 (according to 226 * the above definition) or characters in the range 0x80 ... 0x9F, which 227 * ISO-8859 considers to be control characters but the IBM PC and Macintosh 228 * consider to be printing characters. 229 */ 230 231 #define F 0 /* character never appears in text */ 232 #define T 1 /* character appears in plain ASCII text */ 233 #define I 2 /* character appears in ISO-8859 text */ 234 #define X 3 /* character appears in non-ISO extended ASCII (Mac, IBM PC) */ 235 236 private char text_chars[256] = { 237 /* BEL BS HT LF VT FF CR */ 238 F, F, F, F, F, F, F, T, T, T, T, T, T, T, F, F, /* 0x0X */ 239 /* ESC */ 240 F, F, F, F, F, F, F, F, F, F, F, T, F, F, F, F, /* 0x1X */ 241 T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, /* 0x2X */ 242 T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, /* 0x3X */ 243 T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, /* 0x4X */ 244 T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, /* 0x5X */ 245 T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, /* 0x6X */ 246 T, T, T, T, T, T, T, T, T, T, T, T, T, T, T, F, /* 0x7X */ 247 /* NEL */ 248 X, X, X, X, X, T, X, X, X, X, X, X, X, X, X, X, /* 0x8X */ 249 X, X, X, X, X, X, X, X, X, X, X, X, X, X, X, X, /* 0x9X */ 250 I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, /* 0xaX */ 251 I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, /* 0xbX */ 252 I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, /* 0xcX */ 253 I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, /* 0xdX */ 254 I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, /* 0xeX */ 255 I, I, I, I, I, I, I, I, I, I, I, I, I, I, I, I /* 0xfX */ 256 }; 257 258 private int 259 looks_ascii(const unsigned char *buf, size_t nbytes, unichar *ubuf, 260 size_t *ulen) 261 { 262 size_t i; 263 264 *ulen = 0; 265 266 for (i = 0; i < nbytes; i++) { 267 int t = text_chars[buf[i]]; 268 269 if (t != T) 270 return 0; 271 272 ubuf[(*ulen)++] = buf[i]; 273 } 274 275 return 1; 276 } 277 278 private int 279 looks_latin1(const unsigned char *buf, size_t nbytes, unichar *ubuf, size_t *ulen) 280 { 281 size_t i; 282 283 *ulen = 0; 284 285 for (i = 0; i < nbytes; i++) { 286 int t = text_chars[buf[i]]; 287 288 if (t != T && t != I) 289 return 0; 290 291 ubuf[(*ulen)++] = buf[i]; 292 } 293 294 return 1; 295 } 296 297 private int 298 looks_extended(const unsigned char *buf, size_t nbytes, unichar *ubuf, 299 size_t *ulen) 300 { 301 size_t i; 302 303 *ulen = 0; 304 305 for (i = 0; i < nbytes; i++) { 306 int t = text_chars[buf[i]]; 307 308 if (t != T && t != I && t != X) 309 return 0; 310 311 ubuf[(*ulen)++] = buf[i]; 312 } 313 314 return 1; 315 } 316 317 /* 318 * Decide whether some text looks like UTF-8. Returns: 319 * 320 * -1: invalid UTF-8 321 * 0: uses odd control characters, so doesn't look like text 322 * 1: 7-bit text 323 * 2: definitely UTF-8 text (valid high-bit set bytes) 324 * 325 * If ubuf is non-NULL on entry, text is decoded into ubuf, *ulen; 326 * ubuf must be big enough! 327 */ 328 protected int 329 file_looks_utf8(const unsigned char *buf, size_t nbytes, unichar *ubuf, size_t *ulen) 330 { 331 size_t i; 332 int n; 333 unichar c; 334 int gotone = 0, ctrl = 0; 335 336 if (ubuf) 337 *ulen = 0; 338 339 for (i = 0; i < nbytes; i++) { 340 if ((buf[i] & 0x80) == 0) { /* 0xxxxxxx is plain ASCII */ 341 /* 342 * Even if the whole file is valid UTF-8 sequences, 343 * still reject it if it uses weird control characters. 344 */ 345 346 if (text_chars[buf[i]] != T) 347 ctrl = 1; 348 349 if (ubuf) 350 ubuf[(*ulen)++] = buf[i]; 351 } else if ((buf[i] & 0x40) == 0) { /* 10xxxxxx never 1st byte */ 352 return -1; 353 } else { /* 11xxxxxx begins UTF-8 */ 354 int following; 355 356 if ((buf[i] & 0x20) == 0) { /* 110xxxxx */ 357 c = buf[i] & 0x1f; 358 following = 1; 359 } else if ((buf[i] & 0x10) == 0) { /* 1110xxxx */ 360 c = buf[i] & 0x0f; 361 following = 2; 362 } else if ((buf[i] & 0x08) == 0) { /* 11110xxx */ 363 c = buf[i] & 0x07; 364 following = 3; 365 } else if ((buf[i] & 0x04) == 0) { /* 111110xx */ 366 c = buf[i] & 0x03; 367 following = 4; 368 } else if ((buf[i] & 0x02) == 0) { /* 1111110x */ 369 c = buf[i] & 0x01; 370 following = 5; 371 } else 372 return -1; 373 374 for (n = 0; n < following; n++) { 375 i++; 376 if (i >= nbytes) 377 goto done; 378 379 if ((buf[i] & 0x80) == 0 || (buf[i] & 0x40)) 380 return -1; 381 382 c = (c << 6) + (buf[i] & 0x3f); 383 } 384 385 if (ubuf) 386 ubuf[(*ulen)++] = c; 387 gotone = 1; 388 } 389 } 390 done: 391 return ctrl ? 0 : (gotone ? 2 : 1); 392 } 393 394 /* 395 * Decide whether some text looks like UTF-8 with BOM. If there is no 396 * BOM, return -1; otherwise return the result of looks_utf8 on the 397 * rest of the text. 398 */ 399 private int 400 looks_utf8_with_BOM(const unsigned char *buf, size_t nbytes, unichar *ubuf, 401 size_t *ulen) 402 { 403 if (nbytes > 3 && buf[0] == 0xef && buf[1] == 0xbb && buf[2] == 0xbf) 404 return file_looks_utf8(buf + 3, nbytes - 3, ubuf, ulen); 405 else 406 return -1; 407 } 408 409 private int 410 looks_utf7(const unsigned char *buf, size_t nbytes, unichar *ubuf, size_t *ulen) 411 { 412 if (nbytes > 4 && buf[0] == '+' && buf[1] == '/' && buf[2] == 'v') 413 switch (buf[3]) { 414 case '8': 415 case '9': 416 case '+': 417 case '/': 418 if (ubuf) 419 *ulen = 0; 420 return 1; 421 default: 422 return -1; 423 } 424 else 425 return -1; 426 } 427 428 private int 429 looks_ucs16(const unsigned char *bf, size_t nbytes, unichar *ubf, 430 size_t *ulen) 431 { 432 int bigend; 433 size_t i; 434 435 if (nbytes < 2) 436 return 0; 437 438 if (bf[0] == 0xff && bf[1] == 0xfe) 439 bigend = 0; 440 else if (bf[0] == 0xfe && bf[1] == 0xff) 441 bigend = 1; 442 else 443 return 0; 444 445 *ulen = 0; 446 447 for (i = 2; i + 1 < nbytes; i += 2) { 448 /* XXX fix to properly handle chars > 65536 */ 449 450 if (bigend) 451 ubf[(*ulen)++] = bf[i + 1] 452 | (CAST(unichar, bf[i]) << 8); 453 else 454 ubf[(*ulen)++] = bf[i] 455 | (CAST(unichar, bf[i + 1]) << 8); 456 457 if (ubf[*ulen - 1] == 0xfffe) 458 return 0; 459 if (ubf[*ulen - 1] < 128 && 460 text_chars[CAST(size_t, ubf[*ulen - 1])] != T) 461 return 0; 462 } 463 464 return 1 + bigend; 465 } 466 467 private int 468 looks_ucs32(const unsigned char *bf, size_t nbytes, unichar *ubf, 469 size_t *ulen) 470 { 471 int bigend; 472 size_t i; 473 474 if (nbytes < 4) 475 return 0; 476 477 if (bf[0] == 0xff && bf[1] == 0xfe && bf[2] == 0 && bf[3] == 0) 478 bigend = 0; 479 else if (bf[0] == 0 && bf[1] == 0 && bf[2] == 0xfe && bf[3] == 0xff) 480 bigend = 1; 481 else 482 return 0; 483 484 *ulen = 0; 485 486 for (i = 4; i + 3 < nbytes; i += 4) { 487 /* XXX fix to properly handle chars > 65536 */ 488 489 if (bigend) 490 ubf[(*ulen)++] = CAST(unichar, bf[i + 3]) 491 | (CAST(unichar, bf[i + 2]) << 8) 492 | (CAST(unichar, bf[i + 1]) << 16) 493 | (CAST(unichar, bf[i]) << 24); 494 else 495 ubf[(*ulen)++] = CAST(unichar, bf[i + 0]) 496 | (CAST(unichar, bf[i + 1]) << 8) 497 | (CAST(unichar, bf[i + 2]) << 16) 498 | (CAST(unichar, bf[i + 3]) << 24); 499 500 if (ubf[*ulen - 1] == 0xfffe) 501 return 0; 502 if (ubf[*ulen - 1] < 128 && 503 text_chars[CAST(size_t, ubf[*ulen - 1])] != T) 504 return 0; 505 } 506 507 return 1 + bigend; 508 } 509 #undef F 510 #undef T 511 #undef I 512 #undef X 513 514 /* 515 * This table maps each EBCDIC character to an (8-bit extended) ASCII 516 * character, as specified in the rationale for the dd(1) command in 517 * draft 11.2 (September, 1991) of the POSIX P1003.2 standard. 518 * 519 * Unfortunately it does not seem to correspond exactly to any of the 520 * five variants of EBCDIC documented in IBM's _Enterprise Systems 521 * Architecture/390: Principles of Operation_, SA22-7201-06, Seventh 522 * Edition, July, 1999, pp. I-1 - I-4. 523 * 524 * Fortunately, though, all versions of EBCDIC, including this one, agree 525 * on most of the printing characters that also appear in (7-bit) ASCII. 526 * Of these, only '|', '!', '~', '^', '[', and ']' are in question at all. 527 * 528 * Fortunately too, there is general agreement that codes 0x00 through 529 * 0x3F represent control characters, 0x41 a nonbreaking space, and the 530 * remainder printing characters. 531 * 532 * This is sufficient to allow us to identify EBCDIC text and to distinguish 533 * between old-style and internationalized examples of text. 534 */ 535 536 private unsigned char ebcdic_to_ascii[] = { 537 0, 1, 2, 3, 156, 9, 134, 127, 151, 141, 142, 11, 12, 13, 14, 15, 538 16, 17, 18, 19, 157, 133, 8, 135, 24, 25, 146, 143, 28, 29, 30, 31, 539 128, 129, 130, 131, 132, 10, 23, 27, 136, 137, 138, 139, 140, 5, 6, 7, 540 144, 145, 22, 147, 148, 149, 150, 4, 152, 153, 154, 155, 20, 21, 158, 26, 541 ' ', 160, 161, 162, 163, 164, 165, 166, 167, 168, 213, '.', '<', '(', '+', '|', 542 '&', 169, 170, 171, 172, 173, 174, 175, 176, 177, '!', '$', '*', ')', ';', '~', 543 '-', '/', 178, 179, 180, 181, 182, 183, 184, 185, 203, ',', '%', '_', '>', '?', 544 186, 187, 188, 189, 190, 191, 192, 193, 194, '`', ':', '#', '@', '\'','=', '"', 545 195, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 196, 197, 198, 199, 200, 201, 546 202, 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', '^', 204, 205, 206, 207, 208, 547 209, 229, 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 210, 211, 212, '[', 214, 215, 548 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, ']', 230, 231, 549 '{', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 232, 233, 234, 235, 236, 237, 550 '}', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 238, 239, 240, 241, 242, 243, 551 '\\',159, 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 244, 245, 246, 247, 248, 249, 552 '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 250, 251, 252, 253, 254, 255 553 }; 554 555 #ifdef notdef 556 /* 557 * The following EBCDIC-to-ASCII table may relate more closely to reality, 558 * or at least to modern reality. It comes from 559 * 560 * http://ftp.s390.ibm.com/products/oe/bpxqp9.html 561 * 562 * and maps the characters of EBCDIC code page 1047 (the code used for 563 * Unix-derived software on IBM's 390 systems) to the corresponding 564 * characters from ISO 8859-1. 565 * 566 * If this table is used instead of the above one, some of the special 567 * cases for the NEL character can be taken out of the code. 568 */ 569 570 private unsigned char ebcdic_1047_to_8859[] = { 571 0x00,0x01,0x02,0x03,0x9C,0x09,0x86,0x7F,0x97,0x8D,0x8E,0x0B,0x0C,0x0D,0x0E,0x0F, 572 0x10,0x11,0x12,0x13,0x9D,0x0A,0x08,0x87,0x18,0x19,0x92,0x8F,0x1C,0x1D,0x1E,0x1F, 573 0x80,0x81,0x82,0x83,0x84,0x85,0x17,0x1B,0x88,0x89,0x8A,0x8B,0x8C,0x05,0x06,0x07, 574 0x90,0x91,0x16,0x93,0x94,0x95,0x96,0x04,0x98,0x99,0x9A,0x9B,0x14,0x15,0x9E,0x1A, 575 0x20,0xA0,0xE2,0xE4,0xE0,0xE1,0xE3,0xE5,0xE7,0xF1,0xA2,0x2E,0x3C,0x28,0x2B,0x7C, 576 0x26,0xE9,0xEA,0xEB,0xE8,0xED,0xEE,0xEF,0xEC,0xDF,0x21,0x24,0x2A,0x29,0x3B,0x5E, 577 0x2D,0x2F,0xC2,0xC4,0xC0,0xC1,0xC3,0xC5,0xC7,0xD1,0xA6,0x2C,0x25,0x5F,0x3E,0x3F, 578 0xF8,0xC9,0xCA,0xCB,0xC8,0xCD,0xCE,0xCF,0xCC,0x60,0x3A,0x23,0x40,0x27,0x3D,0x22, 579 0xD8,0x61,0x62,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0xAB,0xBB,0xF0,0xFD,0xFE,0xB1, 580 0xB0,0x6A,0x6B,0x6C,0x6D,0x6E,0x6F,0x70,0x71,0x72,0xAA,0xBA,0xE6,0xB8,0xC6,0xA4, 581 0xB5,0x7E,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A,0xA1,0xBF,0xD0,0x5B,0xDE,0xAE, 582 0xAC,0xA3,0xA5,0xB7,0xA9,0xA7,0xB6,0xBC,0xBD,0xBE,0xDD,0xA8,0xAF,0x5D,0xB4,0xD7, 583 0x7B,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0xAD,0xF4,0xF6,0xF2,0xF3,0xF5, 584 0x7D,0x4A,0x4B,0x4C,0x4D,0x4E,0x4F,0x50,0x51,0x52,0xB9,0xFB,0xFC,0xF9,0xFA,0xFF, 585 0x5C,0xF7,0x53,0x54,0x55,0x56,0x57,0x58,0x59,0x5A,0xB2,0xD4,0xD6,0xD2,0xD3,0xD5, 586 0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0xB3,0xDB,0xDC,0xD9,0xDA,0x9F 587 }; 588 #endif 589 590 /* 591 * Copy buf[0 ... nbytes-1] into out[], translating EBCDIC to ASCII. 592 */ 593 private void 594 from_ebcdic(const unsigned char *buf, size_t nbytes, unsigned char *out) 595 { 596 size_t i; 597 598 for (i = 0; i < nbytes; i++) { 599 out[i] = ebcdic_to_ascii[buf[i]]; 600 } 601 } 602