| 1 | /* chew |
| 2 | Copyright (C) 1990-2019 Free Software Foundation, Inc. |
| 3 | Contributed by steve chamberlain @cygnus |
| 4 | |
| 5 | This file is part of BFD, the Binary File Descriptor library. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 20 | MA 02110-1301, USA. */ |
| 21 | |
| 22 | /* Yet another way of extracting documentation from source. |
| 23 | No, I haven't finished it yet, but I hope you people like it better |
| 24 | than the old way |
| 25 | |
| 26 | sac |
| 27 | |
| 28 | Basically, this is a sort of string forth, maybe we should call it |
| 29 | struth? |
| 30 | |
| 31 | You define new words thus: |
| 32 | : <newword> <oldwords> ; |
| 33 | |
| 34 | */ |
| 35 | |
| 36 | /* Primitives provided by the program: |
| 37 | |
| 38 | Two stacks are provided, a string stack and an integer stack. |
| 39 | |
| 40 | Internal state variables: |
| 41 | internal_wanted - indicates whether `-i' was passed |
| 42 | internal_mode - user-settable |
| 43 | |
| 44 | Commands: |
| 45 | push_text |
| 46 | ! - pop top of integer stack for address, pop next for value; store |
| 47 | @ - treat value on integer stack as the address of an integer; push |
| 48 | that integer on the integer stack after popping the "address" |
| 49 | hello - print "hello\n" to stdout |
| 50 | stdout - put stdout marker on TOS |
| 51 | stderr - put stderr marker on TOS |
| 52 | print - print TOS-1 on TOS (eg: "hello\n" stdout print) |
| 53 | skip_past_newline |
| 54 | catstr - fn icatstr |
| 55 | copy_past_newline - append input, up to and including newline into TOS |
| 56 | dup - fn other_dup |
| 57 | drop - discard TOS |
| 58 | idrop - ditto |
| 59 | remchar - delete last character from TOS |
| 60 | get_stuff_in_command |
| 61 | do_fancy_stuff - translate <<foo>> to @code{foo} in TOS |
| 62 | bulletize - if "o" lines found, prepend @itemize @bullet to TOS |
| 63 | and @item to each "o" line; append @end itemize |
| 64 | courierize - put @example around . and | lines, translate {* *} { } |
| 65 | exit - fn chew_exit |
| 66 | swap |
| 67 | outputdots - strip out lines without leading dots |
| 68 | paramstuff - convert full declaration into "PARAMS" form if not already |
| 69 | maybecatstr - do catstr if internal_mode == internal_wanted, discard |
| 70 | value in any case |
| 71 | translatecomments - turn {* and *} into comment delimiters |
| 72 | kill_bogus_lines - get rid of extra newlines |
| 73 | indent |
| 74 | internalmode - pop from integer stack, set `internalmode' to that value |
| 75 | print_stack_level - print current stack depth to stderr |
| 76 | strip_trailing_newlines - go ahead, guess... |
| 77 | [quoted string] - push string onto string stack |
| 78 | [word starting with digit] - push atol(str) onto integer stack |
| 79 | |
| 80 | A command must be all upper-case, and alone on a line. |
| 81 | |
| 82 | Foo. */ |
| 83 | |
| 84 | #include "ansidecl.h" |
| 85 | #include <assert.h> |
| 86 | #include <stdio.h> |
| 87 | #include <ctype.h> |
| 88 | #include <stdlib.h> |
| 89 | #include <string.h> |
| 90 | |
| 91 | #define DEF_SIZE 5000 |
| 92 | #define STACK 50 |
| 93 | |
| 94 | int internal_wanted; |
| 95 | int internal_mode; |
| 96 | |
| 97 | int warning; |
| 98 | |
| 99 | /* Here is a string type ... */ |
| 100 | |
| 101 | typedef struct buffer |
| 102 | { |
| 103 | char *ptr; |
| 104 | unsigned long write_idx; |
| 105 | unsigned long size; |
| 106 | } string_type; |
| 107 | |
| 108 | #ifdef __STDC__ |
| 109 | static void init_string_with_size (string_type *, unsigned int); |
| 110 | static void init_string (string_type *); |
| 111 | static int find (string_type *, char *); |
| 112 | static void write_buffer (string_type *, FILE *); |
| 113 | static void delete_string (string_type *); |
| 114 | static char *addr (string_type *, unsigned int); |
| 115 | static char at (string_type *, unsigned int); |
| 116 | static void catchar (string_type *, int); |
| 117 | static void overwrite_string (string_type *, string_type *); |
| 118 | static void catbuf (string_type *, char *, unsigned int); |
| 119 | static void cattext (string_type *, char *); |
| 120 | static void catstr (string_type *, string_type *); |
| 121 | static void die (char *); |
| 122 | #endif |
| 123 | |
| 124 | static void |
| 125 | init_string_with_size (buffer, size) |
| 126 | string_type *buffer; |
| 127 | unsigned int size; |
| 128 | { |
| 129 | buffer->write_idx = 0; |
| 130 | buffer->size = size; |
| 131 | buffer->ptr = (char *) malloc (size); |
| 132 | } |
| 133 | |
| 134 | static void |
| 135 | init_string (buffer) |
| 136 | string_type *buffer; |
| 137 | { |
| 138 | init_string_with_size (buffer, DEF_SIZE); |
| 139 | } |
| 140 | |
| 141 | static int |
| 142 | find (str, what) |
| 143 | string_type *str; |
| 144 | char *what; |
| 145 | { |
| 146 | unsigned int i; |
| 147 | char *p; |
| 148 | p = what; |
| 149 | for (i = 0; i < str->write_idx && *p; i++) |
| 150 | { |
| 151 | if (*p == str->ptr[i]) |
| 152 | p++; |
| 153 | else |
| 154 | p = what; |
| 155 | } |
| 156 | return (*p == 0); |
| 157 | } |
| 158 | |
| 159 | static void |
| 160 | write_buffer (buffer, f) |
| 161 | string_type *buffer; |
| 162 | FILE *f; |
| 163 | { |
| 164 | if (buffer->write_idx != 0 |
| 165 | && fwrite (buffer->ptr, buffer->write_idx, 1, f) != 1) |
| 166 | die ("cannot write output"); |
| 167 | } |
| 168 | |
| 169 | static void |
| 170 | delete_string (buffer) |
| 171 | string_type *buffer; |
| 172 | { |
| 173 | if (buffer->ptr) |
| 174 | free (buffer->ptr); |
| 175 | buffer->ptr = NULL; |
| 176 | } |
| 177 | |
| 178 | static char * |
| 179 | addr (buffer, idx) |
| 180 | string_type *buffer; |
| 181 | unsigned int idx; |
| 182 | { |
| 183 | return buffer->ptr + idx; |
| 184 | } |
| 185 | |
| 186 | static char |
| 187 | at (buffer, pos) |
| 188 | string_type *buffer; |
| 189 | unsigned int pos; |
| 190 | { |
| 191 | if (pos >= buffer->write_idx) |
| 192 | return 0; |
| 193 | return buffer->ptr[pos]; |
| 194 | } |
| 195 | |
| 196 | static void |
| 197 | catchar (buffer, ch) |
| 198 | string_type *buffer; |
| 199 | int ch; |
| 200 | { |
| 201 | if (buffer->write_idx == buffer->size) |
| 202 | { |
| 203 | buffer->size *= 2; |
| 204 | buffer->ptr = (char *) realloc (buffer->ptr, buffer->size); |
| 205 | } |
| 206 | |
| 207 | buffer->ptr[buffer->write_idx++] = ch; |
| 208 | } |
| 209 | |
| 210 | static void |
| 211 | overwrite_string (dst, src) |
| 212 | string_type *dst; |
| 213 | string_type *src; |
| 214 | { |
| 215 | free (dst->ptr); |
| 216 | dst->size = src->size; |
| 217 | dst->write_idx = src->write_idx; |
| 218 | dst->ptr = src->ptr; |
| 219 | } |
| 220 | |
| 221 | static void |
| 222 | catbuf (buffer, buf, len) |
| 223 | string_type *buffer; |
| 224 | char *buf; |
| 225 | unsigned int len; |
| 226 | { |
| 227 | if (buffer->write_idx + len >= buffer->size) |
| 228 | { |
| 229 | while (buffer->write_idx + len >= buffer->size) |
| 230 | buffer->size *= 2; |
| 231 | buffer->ptr = (char *) realloc (buffer->ptr, buffer->size); |
| 232 | } |
| 233 | memcpy (buffer->ptr + buffer->write_idx, buf, len); |
| 234 | buffer->write_idx += len; |
| 235 | } |
| 236 | |
| 237 | static void |
| 238 | cattext (buffer, string) |
| 239 | string_type *buffer; |
| 240 | char *string; |
| 241 | { |
| 242 | catbuf (buffer, string, (unsigned int) strlen (string)); |
| 243 | } |
| 244 | |
| 245 | static void |
| 246 | catstr (dst, src) |
| 247 | string_type *dst; |
| 248 | string_type *src; |
| 249 | { |
| 250 | catbuf (dst, src->ptr, src->write_idx); |
| 251 | } |
| 252 | |
| 253 | static unsigned int |
| 254 | skip_white_and_stars (src, idx) |
| 255 | string_type *src; |
| 256 | unsigned int idx; |
| 257 | { |
| 258 | char c; |
| 259 | while ((c = at (src, idx)), |
| 260 | isspace ((unsigned char) c) |
| 261 | || (c == '*' |
| 262 | /* Don't skip past end-of-comment or star as first |
| 263 | character on its line. */ |
| 264 | && at (src, idx +1) != '/' |
| 265 | && at (src, idx -1) != '\n')) |
| 266 | idx++; |
| 267 | return idx; |
| 268 | } |
| 269 | |
| 270 | static unsigned int |
| 271 | skip_past_newline_1 (ptr, idx) |
| 272 | string_type *ptr; |
| 273 | unsigned int idx; |
| 274 | { |
| 275 | while (at (ptr, idx) |
| 276 | && at (ptr, idx) != '\n') |
| 277 | idx++; |
| 278 | if (at (ptr, idx) == '\n') |
| 279 | return idx + 1; |
| 280 | return idx; |
| 281 | } |
| 282 | |
| 283 | /***********************************************************************/ |
| 284 | |
| 285 | string_type stack[STACK]; |
| 286 | string_type *tos; |
| 287 | |
| 288 | unsigned int idx = 0; /* Pos in input buffer */ |
| 289 | string_type *ptr; /* and the buffer */ |
| 290 | typedef void (*stinst_type)(); |
| 291 | stinst_type *pc; |
| 292 | stinst_type sstack[STACK]; |
| 293 | stinst_type *ssp = &sstack[0]; |
| 294 | long istack[STACK]; |
| 295 | long *isp = &istack[0]; |
| 296 | |
| 297 | typedef int *word_type; |
| 298 | |
| 299 | struct dict_struct |
| 300 | { |
| 301 | char *word; |
| 302 | struct dict_struct *next; |
| 303 | stinst_type *code; |
| 304 | int code_length; |
| 305 | int code_end; |
| 306 | int var; |
| 307 | }; |
| 308 | |
| 309 | typedef struct dict_struct dict_type; |
| 310 | |
| 311 | static void |
| 312 | die (msg) |
| 313 | char *msg; |
| 314 | { |
| 315 | fprintf (stderr, "%s\n", msg); |
| 316 | exit (1); |
| 317 | } |
| 318 | |
| 319 | static void |
| 320 | check_range () |
| 321 | { |
| 322 | if (tos < stack) |
| 323 | die ("underflow in string stack"); |
| 324 | if (tos >= stack + STACK) |
| 325 | die ("overflow in string stack"); |
| 326 | } |
| 327 | |
| 328 | static void |
| 329 | icheck_range () |
| 330 | { |
| 331 | if (isp < istack) |
| 332 | die ("underflow in integer stack"); |
| 333 | if (isp >= istack + STACK) |
| 334 | die ("overflow in integer stack"); |
| 335 | } |
| 336 | |
| 337 | #ifdef __STDC__ |
| 338 | static void exec (dict_type *); |
| 339 | static void call (void); |
| 340 | static void remchar (void), strip_trailing_newlines (void), push_number (void); |
| 341 | static void push_text (void); |
| 342 | static void remove_noncomments (string_type *, string_type *); |
| 343 | static void print_stack_level (void); |
| 344 | static void paramstuff (void), translatecomments (void); |
| 345 | static void outputdots (void), courierize (void), bulletize (void); |
| 346 | static void do_fancy_stuff (void); |
| 347 | static int iscommand (string_type *, unsigned int); |
| 348 | static int copy_past_newline (string_type *, unsigned int, string_type *); |
| 349 | static void icopy_past_newline (void), kill_bogus_lines (void), indent (void); |
| 350 | static void get_stuff_in_command (void), swap (void), other_dup (void); |
| 351 | static void drop (void), idrop (void); |
| 352 | static void icatstr (void), skip_past_newline (void), internalmode (void); |
| 353 | static void maybecatstr (void); |
| 354 | static char *nextword (char *, char **); |
| 355 | dict_type *lookup_word (char *); |
| 356 | static void perform (void); |
| 357 | dict_type *newentry (char *); |
| 358 | unsigned int add_to_definition (dict_type *, stinst_type); |
| 359 | void add_intrinsic (char *, void (*)()); |
| 360 | void add_var (char *); |
| 361 | void compile (char *); |
| 362 | static void bang (void); |
| 363 | static void atsign (void); |
| 364 | static void hello (void); |
| 365 | static void stdout_ (void); |
| 366 | static void stderr_ (void); |
| 367 | static void print (void); |
| 368 | static void read_in (string_type *, FILE *); |
| 369 | static void usage (void); |
| 370 | static void chew_exit (void); |
| 371 | #endif |
| 372 | |
| 373 | static void |
| 374 | exec (word) |
| 375 | dict_type *word; |
| 376 | { |
| 377 | pc = word->code; |
| 378 | while (*pc) |
| 379 | (*pc) (); |
| 380 | } |
| 381 | |
| 382 | static void |
| 383 | call () |
| 384 | { |
| 385 | stinst_type *oldpc = pc; |
| 386 | dict_type *e; |
| 387 | e = (dict_type *) (pc[1]); |
| 388 | exec (e); |
| 389 | pc = oldpc + 2; |
| 390 | } |
| 391 | |
| 392 | static void |
| 393 | remchar () |
| 394 | { |
| 395 | if (tos->write_idx) |
| 396 | tos->write_idx--; |
| 397 | pc++; |
| 398 | } |
| 399 | |
| 400 | static void |
| 401 | strip_trailing_newlines () |
| 402 | { |
| 403 | while ((isspace ((unsigned char) at (tos, tos->write_idx - 1)) |
| 404 | || at (tos, tos->write_idx - 1) == '\n') |
| 405 | && tos->write_idx > 0) |
| 406 | tos->write_idx--; |
| 407 | pc++; |
| 408 | } |
| 409 | |
| 410 | static void |
| 411 | push_number () |
| 412 | { |
| 413 | isp++; |
| 414 | icheck_range (); |
| 415 | pc++; |
| 416 | *isp = (long) (*pc); |
| 417 | pc++; |
| 418 | } |
| 419 | |
| 420 | static void |
| 421 | push_text () |
| 422 | { |
| 423 | tos++; |
| 424 | check_range (); |
| 425 | init_string (tos); |
| 426 | pc++; |
| 427 | cattext (tos, *((char **) pc)); |
| 428 | pc++; |
| 429 | } |
| 430 | |
| 431 | /* This function removes everything not inside comments starting on |
| 432 | the first char of the line from the string, also when copying |
| 433 | comments, removes blank space and leading *'s. |
| 434 | Blank lines are turned into one blank line. */ |
| 435 | |
| 436 | static void |
| 437 | remove_noncomments (src, dst) |
| 438 | string_type *src; |
| 439 | string_type *dst; |
| 440 | { |
| 441 | unsigned int idx = 0; |
| 442 | |
| 443 | while (at (src, idx)) |
| 444 | { |
| 445 | /* Now see if we have a comment at the start of the line. */ |
| 446 | if (at (src, idx) == '\n' |
| 447 | && at (src, idx + 1) == '/' |
| 448 | && at (src, idx + 2) == '*') |
| 449 | { |
| 450 | idx += 3; |
| 451 | |
| 452 | idx = skip_white_and_stars (src, idx); |
| 453 | |
| 454 | /* Remove leading dot */ |
| 455 | if (at (src, idx) == '.') |
| 456 | idx++; |
| 457 | |
| 458 | /* Copy to the end of the line, or till the end of the |
| 459 | comment. */ |
| 460 | while (at (src, idx)) |
| 461 | { |
| 462 | if (at (src, idx) == '\n') |
| 463 | { |
| 464 | /* end of line, echo and scrape of leading blanks */ |
| 465 | if (at (src, idx + 1) == '\n') |
| 466 | catchar (dst, '\n'); |
| 467 | catchar (dst, '\n'); |
| 468 | idx++; |
| 469 | idx = skip_white_and_stars (src, idx); |
| 470 | } |
| 471 | else if (at (src, idx) == '*' && at (src, idx + 1) == '/') |
| 472 | { |
| 473 | idx += 2; |
| 474 | cattext (dst, "\nENDDD\n"); |
| 475 | break; |
| 476 | } |
| 477 | else |
| 478 | { |
| 479 | catchar (dst, at (src, idx)); |
| 480 | idx++; |
| 481 | } |
| 482 | } |
| 483 | } |
| 484 | else |
| 485 | idx++; |
| 486 | } |
| 487 | } |
| 488 | |
| 489 | static void |
| 490 | print_stack_level () |
| 491 | { |
| 492 | fprintf (stderr, "current string stack depth = %ld, ", |
| 493 | (long) (tos - stack)); |
| 494 | fprintf (stderr, "current integer stack depth = %ld\n", |
| 495 | (long) (isp - istack)); |
| 496 | pc++; |
| 497 | } |
| 498 | |
| 499 | /* turn: |
| 500 | foobar name(stuff); |
| 501 | into: |
| 502 | foobar |
| 503 | name PARAMS ((stuff)); |
| 504 | and a blank line. |
| 505 | */ |
| 506 | |
| 507 | static void |
| 508 | paramstuff () |
| 509 | { |
| 510 | unsigned int openp; |
| 511 | unsigned int fname; |
| 512 | unsigned int idx; |
| 513 | unsigned int len; |
| 514 | string_type out; |
| 515 | init_string (&out); |
| 516 | |
| 517 | #define NO_PARAMS 1 |
| 518 | |
| 519 | /* Make sure that it's not already param'd or proto'd. */ |
| 520 | if (NO_PARAMS |
| 521 | || find (tos, "PARAMS") || find (tos, "PROTO") || !find (tos, "(")) |
| 522 | { |
| 523 | catstr (&out, tos); |
| 524 | } |
| 525 | else |
| 526 | { |
| 527 | /* Find the open paren. */ |
| 528 | for (openp = 0; at (tos, openp) != '(' && at (tos, openp); openp++) |
| 529 | ; |
| 530 | |
| 531 | fname = openp; |
| 532 | /* Step back to the fname. */ |
| 533 | fname--; |
| 534 | while (fname && isspace ((unsigned char) at (tos, fname))) |
| 535 | fname--; |
| 536 | while (fname |
| 537 | && !isspace ((unsigned char) at (tos,fname)) |
| 538 | && at (tos,fname) != '*') |
| 539 | fname--; |
| 540 | |
| 541 | fname++; |
| 542 | |
| 543 | /* Output type, omitting trailing whitespace character(s), if |
| 544 | any. */ |
| 545 | for (len = fname; 0 < len; len--) |
| 546 | { |
| 547 | if (!isspace ((unsigned char) at (tos, len - 1))) |
| 548 | break; |
| 549 | } |
| 550 | for (idx = 0; idx < len; idx++) |
| 551 | catchar (&out, at (tos, idx)); |
| 552 | |
| 553 | cattext (&out, "\n"); /* Insert a newline between type and fnname */ |
| 554 | |
| 555 | /* Output function name, omitting trailing whitespace |
| 556 | character(s), if any. */ |
| 557 | for (len = openp; 0 < len; len--) |
| 558 | { |
| 559 | if (!isspace ((unsigned char) at (tos, len - 1))) |
| 560 | break; |
| 561 | } |
| 562 | for (idx = fname; idx < len; idx++) |
| 563 | catchar (&out, at (tos, idx)); |
| 564 | |
| 565 | cattext (&out, " PARAMS ("); |
| 566 | |
| 567 | for (idx = openp; at (tos, idx) && at (tos, idx) != ';'; idx++) |
| 568 | catchar (&out, at (tos, idx)); |
| 569 | |
| 570 | cattext (&out, ");\n\n"); |
| 571 | } |
| 572 | overwrite_string (tos, &out); |
| 573 | pc++; |
| 574 | |
| 575 | } |
| 576 | |
| 577 | /* turn {* |
| 578 | and *} into comments */ |
| 579 | |
| 580 | static void |
| 581 | translatecomments () |
| 582 | { |
| 583 | unsigned int idx = 0; |
| 584 | string_type out; |
| 585 | init_string (&out); |
| 586 | |
| 587 | while (at (tos, idx)) |
| 588 | { |
| 589 | if (at (tos, idx) == '{' && at (tos, idx + 1) == '*') |
| 590 | { |
| 591 | cattext (&out, "/*"); |
| 592 | idx += 2; |
| 593 | } |
| 594 | else if (at (tos, idx) == '*' && at (tos, idx + 1) == '}') |
| 595 | { |
| 596 | cattext (&out, "*/"); |
| 597 | idx += 2; |
| 598 | } |
| 599 | else |
| 600 | { |
| 601 | catchar (&out, at (tos, idx)); |
| 602 | idx++; |
| 603 | } |
| 604 | } |
| 605 | |
| 606 | overwrite_string (tos, &out); |
| 607 | |
| 608 | pc++; |
| 609 | } |
| 610 | |
| 611 | /* Mod tos so that only lines with leading dots remain */ |
| 612 | static void |
| 613 | outputdots () |
| 614 | { |
| 615 | unsigned int idx = 0; |
| 616 | string_type out; |
| 617 | init_string (&out); |
| 618 | |
| 619 | while (at (tos, idx)) |
| 620 | { |
| 621 | /* Every iteration begins at the start of a line. */ |
| 622 | if (at (tos, idx) == '.') |
| 623 | { |
| 624 | char c; |
| 625 | |
| 626 | idx++; |
| 627 | |
| 628 | while ((c = at (tos, idx)) && c != '\n') |
| 629 | { |
| 630 | if (c == '{' && at (tos, idx + 1) == '*') |
| 631 | { |
| 632 | cattext (&out, "/*"); |
| 633 | idx += 2; |
| 634 | } |
| 635 | else if (c == '*' && at (tos, idx + 1) == '}') |
| 636 | { |
| 637 | cattext (&out, "*/"); |
| 638 | idx += 2; |
| 639 | } |
| 640 | else |
| 641 | { |
| 642 | catchar (&out, c); |
| 643 | idx++; |
| 644 | } |
| 645 | } |
| 646 | if (c == '\n') |
| 647 | idx++; |
| 648 | catchar (&out, '\n'); |
| 649 | } |
| 650 | else |
| 651 | { |
| 652 | idx = skip_past_newline_1 (tos, idx); |
| 653 | } |
| 654 | } |
| 655 | |
| 656 | overwrite_string (tos, &out); |
| 657 | pc++; |
| 658 | } |
| 659 | |
| 660 | /* Find lines starting with . and | and put example around them on tos */ |
| 661 | static void |
| 662 | courierize () |
| 663 | { |
| 664 | string_type out; |
| 665 | unsigned int idx = 0; |
| 666 | int command = 0; |
| 667 | |
| 668 | init_string (&out); |
| 669 | |
| 670 | while (at (tos, idx)) |
| 671 | { |
| 672 | if (at (tos, idx) == '\n' |
| 673 | && (at (tos, idx +1 ) == '.' |
| 674 | || at (tos, idx + 1) == '|')) |
| 675 | { |
| 676 | cattext (&out, "\n@example\n"); |
| 677 | do |
| 678 | { |
| 679 | idx += 2; |
| 680 | |
| 681 | while (at (tos, idx) && at (tos, idx) != '\n') |
| 682 | { |
| 683 | if (command > 1) |
| 684 | { |
| 685 | /* We are inside {} parameters of some command; |
| 686 | Just pass through until matching brace. */ |
| 687 | if (at (tos, idx) == '{') |
| 688 | ++command; |
| 689 | else if (at (tos, idx) == '}') |
| 690 | --command; |
| 691 | } |
| 692 | else if (command != 0) |
| 693 | { |
| 694 | if (at (tos, idx) == '{') |
| 695 | ++command; |
| 696 | else if (!islower ((unsigned char) at (tos, idx))) |
| 697 | --command; |
| 698 | } |
| 699 | else if (at (tos, idx) == '@' |
| 700 | && islower ((unsigned char) at (tos, idx + 1))) |
| 701 | { |
| 702 | ++command; |
| 703 | } |
| 704 | else if (at (tos, idx) == '{' && at (tos, idx + 1) == '*') |
| 705 | { |
| 706 | cattext (&out, "/*"); |
| 707 | idx += 2; |
| 708 | continue; |
| 709 | } |
| 710 | else if (at (tos, idx) == '*' && at (tos, idx + 1) == '}') |
| 711 | { |
| 712 | cattext (&out, "*/"); |
| 713 | idx += 2; |
| 714 | continue; |
| 715 | } |
| 716 | else if (at (tos, idx) == '{' |
| 717 | || at (tos, idx) == '}') |
| 718 | { |
| 719 | catchar (&out, '@'); |
| 720 | } |
| 721 | |
| 722 | catchar (&out, at (tos, idx)); |
| 723 | idx++; |
| 724 | } |
| 725 | catchar (&out, '\n'); |
| 726 | } |
| 727 | while (at (tos, idx) == '\n' |
| 728 | && ((at (tos, idx + 1) == '.') |
| 729 | || (at (tos, idx + 1) == '|'))) |
| 730 | ; |
| 731 | cattext (&out, "@end example"); |
| 732 | } |
| 733 | else |
| 734 | { |
| 735 | catchar (&out, at (tos, idx)); |
| 736 | idx++; |
| 737 | } |
| 738 | } |
| 739 | |
| 740 | overwrite_string (tos, &out); |
| 741 | pc++; |
| 742 | } |
| 743 | |
| 744 | /* Finds any lines starting with "o ", if there are any, then turns |
| 745 | on @itemize @bullet, and @items each of them. Then ends with @end |
| 746 | itemize, inplace at TOS*/ |
| 747 | |
| 748 | static void |
| 749 | bulletize () |
| 750 | { |
| 751 | unsigned int idx = 0; |
| 752 | int on = 0; |
| 753 | string_type out; |
| 754 | init_string (&out); |
| 755 | |
| 756 | while (at (tos, idx)) |
| 757 | { |
| 758 | if (at (tos, idx) == '@' |
| 759 | && at (tos, idx + 1) == '*') |
| 760 | { |
| 761 | cattext (&out, "*"); |
| 762 | idx += 2; |
| 763 | } |
| 764 | else if (at (tos, idx) == '\n' |
| 765 | && at (tos, idx + 1) == 'o' |
| 766 | && isspace ((unsigned char) at (tos, idx + 2))) |
| 767 | { |
| 768 | if (!on) |
| 769 | { |
| 770 | cattext (&out, "\n@itemize @bullet\n"); |
| 771 | on = 1; |
| 772 | |
| 773 | } |
| 774 | cattext (&out, "\n@item\n"); |
| 775 | idx += 3; |
| 776 | } |
| 777 | else |
| 778 | { |
| 779 | catchar (&out, at (tos, idx)); |
| 780 | if (on && at (tos, idx) == '\n' |
| 781 | && at (tos, idx + 1) == '\n' |
| 782 | && at (tos, idx + 2) != 'o') |
| 783 | { |
| 784 | cattext (&out, "@end itemize"); |
| 785 | on = 0; |
| 786 | } |
| 787 | idx++; |
| 788 | |
| 789 | } |
| 790 | } |
| 791 | if (on) |
| 792 | { |
| 793 | cattext (&out, "@end itemize\n"); |
| 794 | } |
| 795 | |
| 796 | delete_string (tos); |
| 797 | *tos = out; |
| 798 | pc++; |
| 799 | } |
| 800 | |
| 801 | /* Turn <<foo>> into @code{foo} in place at TOS*/ |
| 802 | |
| 803 | static void |
| 804 | do_fancy_stuff () |
| 805 | { |
| 806 | unsigned int idx = 0; |
| 807 | string_type out; |
| 808 | init_string (&out); |
| 809 | while (at (tos, idx)) |
| 810 | { |
| 811 | if (at (tos, idx) == '<' |
| 812 | && at (tos, idx + 1) == '<' |
| 813 | && !isspace ((unsigned char) at (tos, idx + 2))) |
| 814 | { |
| 815 | /* This qualifies as a << startup. */ |
| 816 | idx += 2; |
| 817 | cattext (&out, "@code{"); |
| 818 | while (at (tos, idx) |
| 819 | && at (tos, idx) != '>' ) |
| 820 | { |
| 821 | catchar (&out, at (tos, idx)); |
| 822 | idx++; |
| 823 | |
| 824 | } |
| 825 | cattext (&out, "}"); |
| 826 | idx += 2; |
| 827 | } |
| 828 | else |
| 829 | { |
| 830 | catchar (&out, at (tos, idx)); |
| 831 | idx++; |
| 832 | } |
| 833 | } |
| 834 | delete_string (tos); |
| 835 | *tos = out; |
| 836 | pc++; |
| 837 | |
| 838 | } |
| 839 | |
| 840 | /* A command is all upper case,and alone on a line. */ |
| 841 | |
| 842 | static int |
| 843 | iscommand (ptr, idx) |
| 844 | string_type *ptr; |
| 845 | unsigned int idx; |
| 846 | { |
| 847 | unsigned int len = 0; |
| 848 | while (at (ptr, idx)) |
| 849 | { |
| 850 | if (isupper ((unsigned char) at (ptr, idx)) |
| 851 | || at (ptr, idx) == ' ' || at (ptr, idx) == '_') |
| 852 | { |
| 853 | len++; |
| 854 | idx++; |
| 855 | } |
| 856 | else if (at (ptr, idx) == '\n') |
| 857 | { |
| 858 | if (len > 3) |
| 859 | return 1; |
| 860 | return 0; |
| 861 | } |
| 862 | else |
| 863 | return 0; |
| 864 | } |
| 865 | return 0; |
| 866 | } |
| 867 | |
| 868 | static int |
| 869 | copy_past_newline (ptr, idx, dst) |
| 870 | string_type *ptr; |
| 871 | unsigned int idx; |
| 872 | string_type *dst; |
| 873 | { |
| 874 | int column = 0; |
| 875 | |
| 876 | while (at (ptr, idx) && at (ptr, idx) != '\n') |
| 877 | { |
| 878 | if (at (ptr, idx) == '\t') |
| 879 | { |
| 880 | /* Expand tabs. Neither makeinfo nor TeX can cope well with |
| 881 | them. */ |
| 882 | do |
| 883 | catchar (dst, ' '); |
| 884 | while (++column & 7); |
| 885 | } |
| 886 | else |
| 887 | { |
| 888 | catchar (dst, at (ptr, idx)); |
| 889 | column++; |
| 890 | } |
| 891 | idx++; |
| 892 | |
| 893 | } |
| 894 | catchar (dst, at (ptr, idx)); |
| 895 | idx++; |
| 896 | return idx; |
| 897 | |
| 898 | } |
| 899 | |
| 900 | static void |
| 901 | icopy_past_newline () |
| 902 | { |
| 903 | tos++; |
| 904 | check_range (); |
| 905 | init_string (tos); |
| 906 | idx = copy_past_newline (ptr, idx, tos); |
| 907 | pc++; |
| 908 | } |
| 909 | |
| 910 | /* indent |
| 911 | Take the string at the top of the stack, do some prettying. */ |
| 912 | |
| 913 | static void |
| 914 | kill_bogus_lines () |
| 915 | { |
| 916 | int sl; |
| 917 | |
| 918 | int idx = 0; |
| 919 | int c; |
| 920 | int dot = 0; |
| 921 | |
| 922 | string_type out; |
| 923 | init_string (&out); |
| 924 | /* Drop leading nl. */ |
| 925 | while (at (tos, idx) == '\n') |
| 926 | { |
| 927 | idx++; |
| 928 | } |
| 929 | c = idx; |
| 930 | |
| 931 | /* If the first char is a '.' prepend a newline so that it is |
| 932 | recognized properly later. */ |
| 933 | if (at (tos, idx) == '.') |
| 934 | catchar (&out, '\n'); |
| 935 | |
| 936 | /* Find the last char. */ |
| 937 | while (at (tos, idx)) |
| 938 | { |
| 939 | idx++; |
| 940 | } |
| 941 | |
| 942 | /* Find the last non white before the nl. */ |
| 943 | idx--; |
| 944 | |
| 945 | while (idx && isspace ((unsigned char) at (tos, idx))) |
| 946 | idx--; |
| 947 | idx++; |
| 948 | |
| 949 | /* Copy buffer upto last char, but blank lines before and after |
| 950 | dots don't count. */ |
| 951 | sl = 1; |
| 952 | |
| 953 | while (c < idx) |
| 954 | { |
| 955 | if (at (tos, c) == '\n' |
| 956 | && at (tos, c + 1) == '\n' |
| 957 | && at (tos, c + 2) == '.') |
| 958 | { |
| 959 | /* Ignore two newlines before a dot. */ |
| 960 | c++; |
| 961 | } |
| 962 | else if (at (tos, c) == '.' && sl) |
| 963 | { |
| 964 | /* remember that this line started with a dot. */ |
| 965 | dot = 2; |
| 966 | } |
| 967 | else if (at (tos, c) == '\n' |
| 968 | && at (tos, c + 1) == '\n' |
| 969 | && dot) |
| 970 | { |
| 971 | c++; |
| 972 | /* Ignore two newlines when last line was dot. */ |
| 973 | } |
| 974 | |
| 975 | catchar (&out, at (tos, c)); |
| 976 | if (at (tos, c) == '\n') |
| 977 | { |
| 978 | sl = 1; |
| 979 | |
| 980 | if (dot == 2) |
| 981 | dot = 1; |
| 982 | else |
| 983 | dot = 0; |
| 984 | } |
| 985 | else |
| 986 | sl = 0; |
| 987 | |
| 988 | c++; |
| 989 | |
| 990 | } |
| 991 | |
| 992 | /* Append nl. */ |
| 993 | catchar (&out, '\n'); |
| 994 | pc++; |
| 995 | delete_string (tos); |
| 996 | *tos = out; |
| 997 | |
| 998 | } |
| 999 | |
| 1000 | static void |
| 1001 | indent () |
| 1002 | { |
| 1003 | string_type out; |
| 1004 | int tab = 0; |
| 1005 | int idx = 0; |
| 1006 | int ol = 0; |
| 1007 | init_string (&out); |
| 1008 | while (at (tos, idx)) |
| 1009 | { |
| 1010 | switch (at (tos, idx)) |
| 1011 | { |
| 1012 | case '\n': |
| 1013 | cattext (&out, "\n"); |
| 1014 | idx++; |
| 1015 | if (tab && at (tos, idx)) |
| 1016 | { |
| 1017 | cattext (&out, " "); |
| 1018 | } |
| 1019 | ol = 0; |
| 1020 | break; |
| 1021 | case '(': |
| 1022 | tab++; |
| 1023 | if (ol == 0) |
| 1024 | cattext (&out, " "); |
| 1025 | idx++; |
| 1026 | cattext (&out, "("); |
| 1027 | ol = 1; |
| 1028 | break; |
| 1029 | case ')': |
| 1030 | tab--; |
| 1031 | cattext (&out, ")"); |
| 1032 | idx++; |
| 1033 | ol = 1; |
| 1034 | |
| 1035 | break; |
| 1036 | default: |
| 1037 | catchar (&out, at (tos, idx)); |
| 1038 | ol = 1; |
| 1039 | |
| 1040 | idx++; |
| 1041 | break; |
| 1042 | } |
| 1043 | } |
| 1044 | |
| 1045 | pc++; |
| 1046 | delete_string (tos); |
| 1047 | *tos = out; |
| 1048 | |
| 1049 | } |
| 1050 | |
| 1051 | static void |
| 1052 | get_stuff_in_command () |
| 1053 | { |
| 1054 | tos++; |
| 1055 | check_range (); |
| 1056 | init_string (tos); |
| 1057 | |
| 1058 | while (at (ptr, idx)) |
| 1059 | { |
| 1060 | if (iscommand (ptr, idx)) |
| 1061 | break; |
| 1062 | idx = copy_past_newline (ptr, idx, tos); |
| 1063 | } |
| 1064 | pc++; |
| 1065 | } |
| 1066 | |
| 1067 | static void |
| 1068 | swap () |
| 1069 | { |
| 1070 | string_type t; |
| 1071 | |
| 1072 | t = tos[0]; |
| 1073 | tos[0] = tos[-1]; |
| 1074 | tos[-1] = t; |
| 1075 | pc++; |
| 1076 | } |
| 1077 | |
| 1078 | static void |
| 1079 | other_dup () |
| 1080 | { |
| 1081 | tos++; |
| 1082 | check_range (); |
| 1083 | init_string (tos); |
| 1084 | catstr (tos, tos - 1); |
| 1085 | pc++; |
| 1086 | } |
| 1087 | |
| 1088 | static void |
| 1089 | drop () |
| 1090 | { |
| 1091 | tos--; |
| 1092 | check_range (); |
| 1093 | delete_string (tos + 1); |
| 1094 | pc++; |
| 1095 | } |
| 1096 | |
| 1097 | static void |
| 1098 | idrop () |
| 1099 | { |
| 1100 | isp--; |
| 1101 | icheck_range (); |
| 1102 | pc++; |
| 1103 | } |
| 1104 | |
| 1105 | static void |
| 1106 | icatstr () |
| 1107 | { |
| 1108 | tos--; |
| 1109 | check_range (); |
| 1110 | catstr (tos, tos + 1); |
| 1111 | delete_string (tos + 1); |
| 1112 | pc++; |
| 1113 | } |
| 1114 | |
| 1115 | static void |
| 1116 | skip_past_newline () |
| 1117 | { |
| 1118 | idx = skip_past_newline_1 (ptr, idx); |
| 1119 | pc++; |
| 1120 | } |
| 1121 | |
| 1122 | static void |
| 1123 | internalmode () |
| 1124 | { |
| 1125 | internal_mode = *(isp); |
| 1126 | isp--; |
| 1127 | icheck_range (); |
| 1128 | pc++; |
| 1129 | } |
| 1130 | |
| 1131 | static void |
| 1132 | maybecatstr () |
| 1133 | { |
| 1134 | if (internal_wanted == internal_mode) |
| 1135 | { |
| 1136 | catstr (tos - 1, tos); |
| 1137 | } |
| 1138 | delete_string (tos); |
| 1139 | tos--; |
| 1140 | check_range (); |
| 1141 | pc++; |
| 1142 | } |
| 1143 | |
| 1144 | char * |
| 1145 | nextword (string, word) |
| 1146 | char *string; |
| 1147 | char **word; |
| 1148 | { |
| 1149 | char *word_start; |
| 1150 | int idx; |
| 1151 | char *dst; |
| 1152 | char *src; |
| 1153 | |
| 1154 | int length = 0; |
| 1155 | |
| 1156 | while (isspace ((unsigned char) *string) || *string == '-') |
| 1157 | { |
| 1158 | if (*string == '-') |
| 1159 | { |
| 1160 | while (*string && *string != '\n') |
| 1161 | string++; |
| 1162 | |
| 1163 | } |
| 1164 | else |
| 1165 | { |
| 1166 | string++; |
| 1167 | } |
| 1168 | } |
| 1169 | if (!*string) |
| 1170 | return 0; |
| 1171 | |
| 1172 | word_start = string; |
| 1173 | if (*string == '"') |
| 1174 | { |
| 1175 | do |
| 1176 | { |
| 1177 | string++; |
| 1178 | length++; |
| 1179 | if (*string == '\\') |
| 1180 | { |
| 1181 | string += 2; |
| 1182 | length += 2; |
| 1183 | } |
| 1184 | } |
| 1185 | while (*string != '"'); |
| 1186 | } |
| 1187 | else |
| 1188 | { |
| 1189 | while (!isspace ((unsigned char) *string)) |
| 1190 | { |
| 1191 | string++; |
| 1192 | length++; |
| 1193 | |
| 1194 | } |
| 1195 | } |
| 1196 | |
| 1197 | *word = (char *) malloc (length + 1); |
| 1198 | |
| 1199 | dst = *word; |
| 1200 | src = word_start; |
| 1201 | |
| 1202 | for (idx = 0; idx < length; idx++) |
| 1203 | { |
| 1204 | if (src[idx] == '\\') |
| 1205 | switch (src[idx + 1]) |
| 1206 | { |
| 1207 | case 'n': |
| 1208 | *dst++ = '\n'; |
| 1209 | idx++; |
| 1210 | break; |
| 1211 | case '"': |
| 1212 | case '\\': |
| 1213 | *dst++ = src[idx + 1]; |
| 1214 | idx++; |
| 1215 | break; |
| 1216 | default: |
| 1217 | *dst++ = '\\'; |
| 1218 | break; |
| 1219 | } |
| 1220 | else |
| 1221 | *dst++ = src[idx]; |
| 1222 | } |
| 1223 | *dst++ = 0; |
| 1224 | |
| 1225 | if (*string) |
| 1226 | return string + 1; |
| 1227 | else |
| 1228 | return 0; |
| 1229 | } |
| 1230 | |
| 1231 | dict_type *root; |
| 1232 | |
| 1233 | dict_type * |
| 1234 | lookup_word (word) |
| 1235 | char *word; |
| 1236 | { |
| 1237 | dict_type *ptr = root; |
| 1238 | while (ptr) |
| 1239 | { |
| 1240 | if (strcmp (ptr->word, word) == 0) |
| 1241 | return ptr; |
| 1242 | ptr = ptr->next; |
| 1243 | } |
| 1244 | if (warning) |
| 1245 | fprintf (stderr, "Can't find %s\n", word); |
| 1246 | return 0; |
| 1247 | } |
| 1248 | |
| 1249 | static void |
| 1250 | free_words (void) |
| 1251 | { |
| 1252 | dict_type *ptr = root; |
| 1253 | |
| 1254 | while (ptr) |
| 1255 | { |
| 1256 | dict_type *next; |
| 1257 | |
| 1258 | if (ptr->word) |
| 1259 | free (ptr->word); |
| 1260 | if (ptr->code) |
| 1261 | { |
| 1262 | int i; |
| 1263 | for (i = 0; i < ptr->code_length; i ++) |
| 1264 | if (ptr->code[i] == push_text |
| 1265 | && ptr->code[i + 1]) |
| 1266 | { |
| 1267 | free (ptr->code[i + 1] - 1); |
| 1268 | ++ i; |
| 1269 | } |
| 1270 | free (ptr->code); |
| 1271 | } |
| 1272 | next = ptr->next; |
| 1273 | free (ptr); |
| 1274 | ptr = next; |
| 1275 | } |
| 1276 | } |
| 1277 | |
| 1278 | static void |
| 1279 | perform () |
| 1280 | { |
| 1281 | tos = stack; |
| 1282 | |
| 1283 | while (at (ptr, idx)) |
| 1284 | { |
| 1285 | /* It's worth looking through the command list. */ |
| 1286 | if (iscommand (ptr, idx)) |
| 1287 | { |
| 1288 | char *next; |
| 1289 | dict_type *word; |
| 1290 | |
| 1291 | (void) nextword (addr (ptr, idx), &next); |
| 1292 | |
| 1293 | word = lookup_word (next); |
| 1294 | |
| 1295 | if (word) |
| 1296 | { |
| 1297 | exec (word); |
| 1298 | } |
| 1299 | else |
| 1300 | { |
| 1301 | if (warning) |
| 1302 | fprintf (stderr, "warning, %s is not recognised\n", next); |
| 1303 | skip_past_newline (); |
| 1304 | } |
| 1305 | free (next); |
| 1306 | } |
| 1307 | else |
| 1308 | skip_past_newline (); |
| 1309 | } |
| 1310 | } |
| 1311 | |
| 1312 | dict_type * |
| 1313 | newentry (word) |
| 1314 | char *word; |
| 1315 | { |
| 1316 | dict_type *new_d = (dict_type *) malloc (sizeof (dict_type)); |
| 1317 | new_d->word = word; |
| 1318 | new_d->next = root; |
| 1319 | root = new_d; |
| 1320 | new_d->code = (stinst_type *) malloc (sizeof (stinst_type)); |
| 1321 | new_d->code_length = 1; |
| 1322 | new_d->code_end = 0; |
| 1323 | return new_d; |
| 1324 | } |
| 1325 | |
| 1326 | unsigned int |
| 1327 | add_to_definition (entry, word) |
| 1328 | dict_type *entry; |
| 1329 | stinst_type word; |
| 1330 | { |
| 1331 | if (entry->code_end == entry->code_length) |
| 1332 | { |
| 1333 | entry->code_length += 2; |
| 1334 | entry->code = |
| 1335 | (stinst_type *) realloc ((char *) (entry->code), |
| 1336 | entry->code_length * sizeof (word_type)); |
| 1337 | } |
| 1338 | entry->code[entry->code_end] = word; |
| 1339 | |
| 1340 | return entry->code_end++; |
| 1341 | } |
| 1342 | |
| 1343 | void |
| 1344 | add_intrinsic (name, func) |
| 1345 | char *name; |
| 1346 | void (*func) (); |
| 1347 | { |
| 1348 | dict_type *new_d = newentry (strdup (name)); |
| 1349 | add_to_definition (new_d, func); |
| 1350 | add_to_definition (new_d, 0); |
| 1351 | } |
| 1352 | |
| 1353 | void |
| 1354 | add_var (name) |
| 1355 | char *name; |
| 1356 | { |
| 1357 | dict_type *new_d = newentry (name); |
| 1358 | add_to_definition (new_d, push_number); |
| 1359 | add_to_definition (new_d, (stinst_type) (&(new_d->var))); |
| 1360 | add_to_definition (new_d, 0); |
| 1361 | } |
| 1362 | |
| 1363 | void |
| 1364 | compile (string) |
| 1365 | char *string; |
| 1366 | { |
| 1367 | /* Add words to the dictionary. */ |
| 1368 | char *word; |
| 1369 | |
| 1370 | string = nextword (string, &word); |
| 1371 | while (string && *string && word[0]) |
| 1372 | { |
| 1373 | if (strcmp (word, "var") == 0) |
| 1374 | { |
| 1375 | free (word); |
| 1376 | string = nextword (string, &word); |
| 1377 | add_var (word); |
| 1378 | string = nextword (string, &word); |
| 1379 | } |
| 1380 | else if (word[0] == ':') |
| 1381 | { |
| 1382 | dict_type *ptr; |
| 1383 | |
| 1384 | /* Compile a word and add to dictionary. */ |
| 1385 | free (word); |
| 1386 | string = nextword (string, &word); |
| 1387 | ptr = newentry (word); |
| 1388 | string = nextword (string, &word); |
| 1389 | |
| 1390 | while (word[0] != ';') |
| 1391 | { |
| 1392 | switch (word[0]) |
| 1393 | { |
| 1394 | case '"': |
| 1395 | /* got a string, embed magic push string |
| 1396 | function */ |
| 1397 | add_to_definition (ptr, push_text); |
| 1398 | add_to_definition (ptr, (stinst_type) (word + 1)); |
| 1399 | break; |
| 1400 | case '0': |
| 1401 | case '1': |
| 1402 | case '2': |
| 1403 | case '3': |
| 1404 | case '4': |
| 1405 | case '5': |
| 1406 | case '6': |
| 1407 | case '7': |
| 1408 | case '8': |
| 1409 | case '9': |
| 1410 | /* Got a number, embedd the magic push number |
| 1411 | function */ |
| 1412 | add_to_definition (ptr, push_number); |
| 1413 | add_to_definition (ptr, (stinst_type) atol (word)); |
| 1414 | free (word); |
| 1415 | break; |
| 1416 | default: |
| 1417 | add_to_definition (ptr, call); |
| 1418 | add_to_definition (ptr, (stinst_type) lookup_word (word)); |
| 1419 | free (word); |
| 1420 | } |
| 1421 | |
| 1422 | string = nextword (string, &word); |
| 1423 | } |
| 1424 | add_to_definition (ptr, 0); |
| 1425 | free (word); |
| 1426 | word = NULL; |
| 1427 | string = nextword (string, &word); |
| 1428 | } |
| 1429 | else |
| 1430 | { |
| 1431 | fprintf (stderr, "syntax error at %s\n", string - 1); |
| 1432 | } |
| 1433 | } |
| 1434 | if (word) |
| 1435 | free (word); |
| 1436 | } |
| 1437 | |
| 1438 | static void |
| 1439 | bang () |
| 1440 | { |
| 1441 | *(long *) ((isp[0])) = isp[-1]; |
| 1442 | isp -= 2; |
| 1443 | icheck_range (); |
| 1444 | pc++; |
| 1445 | } |
| 1446 | |
| 1447 | static void |
| 1448 | atsign () |
| 1449 | { |
| 1450 | isp[0] = *(long *) (isp[0]); |
| 1451 | pc++; |
| 1452 | } |
| 1453 | |
| 1454 | static void |
| 1455 | hello () |
| 1456 | { |
| 1457 | printf ("hello\n"); |
| 1458 | pc++; |
| 1459 | } |
| 1460 | |
| 1461 | static void |
| 1462 | stdout_ () |
| 1463 | { |
| 1464 | isp++; |
| 1465 | icheck_range (); |
| 1466 | *isp = 1; |
| 1467 | pc++; |
| 1468 | } |
| 1469 | |
| 1470 | static void |
| 1471 | stderr_ () |
| 1472 | { |
| 1473 | isp++; |
| 1474 | icheck_range (); |
| 1475 | *isp = 2; |
| 1476 | pc++; |
| 1477 | } |
| 1478 | |
| 1479 | static void |
| 1480 | print () |
| 1481 | { |
| 1482 | if (*isp == 1) |
| 1483 | write_buffer (tos, stdout); |
| 1484 | else if (*isp == 2) |
| 1485 | write_buffer (tos, stderr); |
| 1486 | else |
| 1487 | fprintf (stderr, "print: illegal print destination `%ld'\n", *isp); |
| 1488 | isp--; |
| 1489 | tos--; |
| 1490 | icheck_range (); |
| 1491 | check_range (); |
| 1492 | pc++; |
| 1493 | } |
| 1494 | |
| 1495 | static void |
| 1496 | read_in (str, file) |
| 1497 | string_type *str; |
| 1498 | FILE *file; |
| 1499 | { |
| 1500 | char buff[10000]; |
| 1501 | unsigned int r; |
| 1502 | do |
| 1503 | { |
| 1504 | r = fread (buff, 1, sizeof (buff), file); |
| 1505 | catbuf (str, buff, r); |
| 1506 | } |
| 1507 | while (r); |
| 1508 | buff[0] = 0; |
| 1509 | |
| 1510 | catbuf (str, buff, 1); |
| 1511 | } |
| 1512 | |
| 1513 | static void |
| 1514 | usage () |
| 1515 | { |
| 1516 | fprintf (stderr, "usage: -[d|i|g] <file >file\n"); |
| 1517 | exit (33); |
| 1518 | } |
| 1519 | |
| 1520 | /* There is no reliable way to declare exit. Sometimes it returns |
| 1521 | int, and sometimes it returns void. Sometimes it changes between |
| 1522 | OS releases. Trying to get it declared correctly in the hosts file |
| 1523 | is a pointless waste of time. */ |
| 1524 | |
| 1525 | static void |
| 1526 | chew_exit () |
| 1527 | { |
| 1528 | exit (0); |
| 1529 | } |
| 1530 | |
| 1531 | int |
| 1532 | main (ac, av) |
| 1533 | int ac; |
| 1534 | char *av[]; |
| 1535 | { |
| 1536 | unsigned int i; |
| 1537 | string_type buffer; |
| 1538 | string_type pptr; |
| 1539 | |
| 1540 | init_string (&buffer); |
| 1541 | init_string (&pptr); |
| 1542 | init_string (stack + 0); |
| 1543 | tos = stack + 1; |
| 1544 | ptr = &pptr; |
| 1545 | |
| 1546 | add_intrinsic ("push_text", push_text); |
| 1547 | add_intrinsic ("!", bang); |
| 1548 | add_intrinsic ("@", atsign); |
| 1549 | add_intrinsic ("hello", hello); |
| 1550 | add_intrinsic ("stdout", stdout_); |
| 1551 | add_intrinsic ("stderr", stderr_); |
| 1552 | add_intrinsic ("print", print); |
| 1553 | add_intrinsic ("skip_past_newline", skip_past_newline); |
| 1554 | add_intrinsic ("catstr", icatstr); |
| 1555 | add_intrinsic ("copy_past_newline", icopy_past_newline); |
| 1556 | add_intrinsic ("dup", other_dup); |
| 1557 | add_intrinsic ("drop", drop); |
| 1558 | add_intrinsic ("idrop", idrop); |
| 1559 | add_intrinsic ("remchar", remchar); |
| 1560 | add_intrinsic ("get_stuff_in_command", get_stuff_in_command); |
| 1561 | add_intrinsic ("do_fancy_stuff", do_fancy_stuff); |
| 1562 | add_intrinsic ("bulletize", bulletize); |
| 1563 | add_intrinsic ("courierize", courierize); |
| 1564 | /* If the following line gives an error, exit() is not declared in the |
| 1565 | ../hosts/foo.h file for this host. Fix it there, not here! */ |
| 1566 | /* No, don't fix it anywhere; see comment on chew_exit--Ian Taylor. */ |
| 1567 | add_intrinsic ("exit", chew_exit); |
| 1568 | add_intrinsic ("swap", swap); |
| 1569 | add_intrinsic ("outputdots", outputdots); |
| 1570 | add_intrinsic ("paramstuff", paramstuff); |
| 1571 | add_intrinsic ("maybecatstr", maybecatstr); |
| 1572 | add_intrinsic ("translatecomments", translatecomments); |
| 1573 | add_intrinsic ("kill_bogus_lines", kill_bogus_lines); |
| 1574 | add_intrinsic ("indent", indent); |
| 1575 | add_intrinsic ("internalmode", internalmode); |
| 1576 | add_intrinsic ("print_stack_level", print_stack_level); |
| 1577 | add_intrinsic ("strip_trailing_newlines", strip_trailing_newlines); |
| 1578 | |
| 1579 | /* Put a nl at the start. */ |
| 1580 | catchar (&buffer, '\n'); |
| 1581 | |
| 1582 | read_in (&buffer, stdin); |
| 1583 | remove_noncomments (&buffer, ptr); |
| 1584 | for (i = 1; i < (unsigned int) ac; i++) |
| 1585 | { |
| 1586 | if (av[i][0] == '-') |
| 1587 | { |
| 1588 | if (av[i][1] == 'f') |
| 1589 | { |
| 1590 | string_type b; |
| 1591 | FILE *f; |
| 1592 | init_string (&b); |
| 1593 | |
| 1594 | f = fopen (av[i + 1], "r"); |
| 1595 | if (!f) |
| 1596 | { |
| 1597 | fprintf (stderr, "Can't open the input file %s\n", |
| 1598 | av[i + 1]); |
| 1599 | return 33; |
| 1600 | } |
| 1601 | |
| 1602 | read_in (&b, f); |
| 1603 | compile (b.ptr); |
| 1604 | perform (); |
| 1605 | delete_string (&b); |
| 1606 | } |
| 1607 | else if (av[i][1] == 'i') |
| 1608 | { |
| 1609 | internal_wanted = 1; |
| 1610 | } |
| 1611 | else if (av[i][1] == 'w') |
| 1612 | { |
| 1613 | warning = 1; |
| 1614 | } |
| 1615 | else |
| 1616 | usage (); |
| 1617 | } |
| 1618 | } |
| 1619 | write_buffer (stack + 0, stdout); |
| 1620 | free_words (); |
| 1621 | delete_string (&pptr); |
| 1622 | delete_string (&buffer); |
| 1623 | if (tos != stack) |
| 1624 | { |
| 1625 | fprintf (stderr, "finishing with current stack level %ld\n", |
| 1626 | (long) (tos - stack)); |
| 1627 | return 1; |
| 1628 | } |
| 1629 | return 0; |
| 1630 | } |