vfontedpr.c revision 1.15
1 /* $NetBSD: vfontedpr.c,v 1.15 2014/07/15 13:17:15 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1980, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, 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 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #if HAVE_NBTOOL_CONFIG_H 33 #include "nbtool_config.h" 34 #endif 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1980, 1993\ 39 The Regents of the University of California. All rights reserved."); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)vfontedpr.c 8.1 (Berkeley) 6/6/93"; 45 #endif 46 __RCSID("$NetBSD: vfontedpr.c,v 1.15 2014/07/15 13:17:15 christos Exp $"); 47 #endif /* not lint */ 48 49 #include <sys/types.h> 50 #include <sys/stat.h> 51 #include <time.h> 52 #include <ctype.h> 53 #include <stdlib.h> 54 #include <stdbool.h> 55 #include <string.h> 56 #include <stdio.h> 57 #include "pathnames.h" 58 #include "extern.h" 59 60 #define STANDARD 0 61 #define ALTERNATE 1 62 63 /* 64 * Vfontedpr. 65 * 66 * Dave Presotto 1/12/81 (adapted from an earlier version by Bill Joy) 67 * 68 */ 69 70 #define STRLEN 10 /* length of strings introducing things */ 71 #define PNAMELEN 40 /* length of a function/procedure name */ 72 #define PSMAX 20 /* size of procedure name stacking */ 73 74 static int iskw(char *); 75 static bool isproc(char *); 76 static void putKcp(char *, char *, bool); 77 static void putScp(char *); 78 static void putcp(int); 79 static int tabs(char *, char *); 80 static int width(char *, char *); 81 82 /* 83 * The state variables 84 */ 85 86 static bool filter = false; /* act as a filter (like eqn) */ 87 static bool inchr; /* in a string constant */ 88 static bool incomm; /* in a comment of the primary type */ 89 static bool idx = false; /* form an index */ 90 static bool instr; /* in a string constant */ 91 static bool nokeyw = false; /* no keywords being flagged */ 92 static bool pass = false; /* 93 * when acting as a filter, pass indicates 94 * whether we are currently processing 95 * input. 96 */ 97 98 static int blklevel; /* current nesting level */ 99 static int comtype; /* type of comment */ 100 static const char *defsfile[2] = { _PATH_VGRINDEFS, 0 }; 101 /* name of language definitions file */ 102 static int margin; 103 static int plstack[PSMAX]; /* the procedure nesting level stack */ 104 static char pname[BUFSIZ+1]; 105 static bool prccont; /* continue last procedure */ 106 static int psptr; /* the stack index of the current procedure */ 107 static char pstack[PSMAX][PNAMELEN+1]; /* the procedure name stack */ 108 109 /* 110 * The language specific globals 111 */ 112 113 char *l_acmbeg; /* string introducing a comment */ 114 char *l_acmend; /* string ending a comment */ 115 char *l_blkbeg; /* string begining of a block */ 116 char *l_blkend; /* string ending a block */ 117 char *l_chrbeg; /* delimiter for character constant */ 118 char *l_chrend; /* delimiter for character constant */ 119 char *l_combeg; /* string introducing a comment */ 120 char *l_comend; /* string ending a comment */ 121 char l_escape; /* character used to escape characters */ 122 char *l_keywds[BUFSIZ/2]; /* keyword table address */ 123 char *l_prcbeg; /* regular expr for procedure begin */ 124 char *l_strbeg; /* delimiter for string constant */ 125 char *l_strend; /* delimiter for string constant */ 126 bool l_toplex; /* procedures only defined at top lex level */ 127 const char *language = "c"; /* the language indicator */ 128 129 int main(int, char **); 130 131 #define ps(x) printf("%s", x) 132 static char minus[] = "-"; 133 static char minusn[] = "-n"; 134 135 int 136 main(int argc, char *argv[]) 137 { 138 const char *fname = ""; 139 struct stat stbuf; 140 char buf[BUFSIZ]; 141 char *defs; 142 int needbp = 0; 143 144 argc--, argv++; 145 do { 146 char *cp; 147 int i; 148 149 if (argc > 0) { 150 if (!strcmp(argv[0], "-h")) { 151 if (argc == 1) { 152 printf("'ds =H\n"); 153 argc = 0; 154 goto rest; 155 } 156 printf("'ds =H %s\n", argv[1]); 157 argc--, argv++; 158 argc--, argv++; 159 if (argc > 0) 160 continue; 161 goto rest; 162 } 163 164 /* act as a filter like eqn */ 165 if (!strcmp(argv[0], "-f")) { 166 filter++; 167 argv[0] = argv[argc-1]; 168 argv[argc-1] = minus; 169 continue; 170 } 171 172 /* take input from the standard place */ 173 if (!strcmp(argv[0], "-")) { 174 argc = 0; 175 goto rest; 176 } 177 178 /* build an index */ 179 if (!strcmp(argv[0], "-x")) { 180 idx++; 181 argv[0] = minusn; 182 } 183 184 /* indicate no keywords */ 185 if (!strcmp(argv[0], "-n")) { 186 nokeyw++; 187 argc--, argv++; 188 continue; 189 } 190 191 /* specify the font size */ 192 if (!strncmp(argv[0], "-s", 2)) { 193 i = 0; 194 cp = argv[0] + 2; 195 while (*cp) 196 i = i * 10 + (*cp++ - '0'); 197 printf("'ps %d\n'vs %d\n", i, i+1); 198 argc--, argv++; 199 continue; 200 } 201 202 /* specify the language */ 203 if (!strncmp(argv[0], "-l", 2)) { 204 language = argv[0]+2; 205 argc--, argv++; 206 continue; 207 } 208 209 /* specify the language description file */ 210 if (!strncmp(argv[0], "-d", 2)) { 211 defsfile[0] = argv[1]; 212 argc--, argv++; 213 argc--, argv++; 214 continue; 215 } 216 217 /* open the file for input */ 218 if (freopen(argv[0], "r", stdin) == NULL) { 219 perror(argv[0]); 220 exit(1); 221 } 222 if (idx) 223 printf("'ta 4i 4.25i 5.5iR\n'in .5i\n"); 224 fname = argv[0]; 225 argc--, argv++; 226 } 227 rest: 228 229 /* 230 * get the language definition from the defs file 231 */ 232 i = cgetent(&defs, defsfile, language); 233 if (i == -1) { 234 fprintf (stderr, "no entry for language %s\n", language); 235 exit(0); 236 } else if (i == -2) { fprintf(stderr, 237 "cannot find vgrindefs file %s\n", defsfile[0]); 238 exit(0); 239 } else if (i == -3) { fprintf(stderr, 240 "potential reference loop detected in vgrindefs file %s\n", 241 defsfile[0]); 242 exit(0); 243 } 244 if (cgetustr(defs, "kw", &cp) == -1) 245 nokeyw = true; 246 else { 247 char **cpp; 248 249 cpp = l_keywds; 250 while (*cp) { 251 while (*cp == ' ' || *cp =='\t') 252 *cp++ = '\0'; 253 if (*cp) 254 *cpp++ = cp; 255 while (*cp != ' ' && *cp != '\t' && *cp) 256 cp++; 257 } 258 *cpp = NULL; 259 } 260 cgetustr(defs, "pb", &cp); 261 l_prcbeg = convexp(cp); 262 cgetustr(defs, "cb", &cp); 263 l_combeg = convexp(cp); 264 cgetustr(defs, "ce", &cp); 265 l_comend = convexp(cp); 266 cgetustr(defs, "ab", &cp); 267 l_acmbeg = convexp(cp); 268 cgetustr(defs, "ae", &cp); 269 l_acmend = convexp(cp); 270 cgetustr(defs, "sb", &cp); 271 l_strbeg = convexp(cp); 272 cgetustr(defs, "se", &cp); 273 l_strend = convexp(cp); 274 cgetustr(defs, "bb", &cp); 275 l_blkbeg = convexp(cp); 276 cgetustr(defs, "be", &cp); 277 l_blkend = convexp(cp); 278 cgetustr(defs, "lb", &cp); 279 l_chrbeg = convexp(cp); 280 cgetustr(defs, "le", &cp); 281 l_chrend = convexp(cp); 282 l_escape = '\\'; 283 l_onecase = (cgetcap(defs, "oc", ':') != NULL); 284 l_toplex = (cgetcap(defs, "tl", ':') != NULL); 285 286 /* initialize the program */ 287 288 incomm = false; 289 instr = false; 290 inchr = false; 291 x_escaped = false; 292 blklevel = 0; 293 for (psptr=0; psptr<PSMAX; psptr++) { 294 pstack[psptr][0] = '\0'; 295 plstack[psptr] = 0; 296 } 297 psptr = -1; 298 ps("'-F\n"); 299 if (!filter) { 300 printf(".ds =F %s\n", fname); 301 ps("'wh 0 vH\n"); 302 ps("'wh -1i vF\n"); 303 } 304 if (needbp) { 305 needbp = 0; 306 printf(".()\n"); 307 printf(".bp\n"); 308 } 309 if (!filter) { 310 fstat(fileno(stdin), &stbuf); 311 cp = ctime(&stbuf.st_mtime); 312 cp[16] = '\0'; 313 cp[24] = '\0'; 314 printf(".ds =M %s %s\n", cp+4, cp+20); 315 } 316 317 /* 318 * MAIN LOOP!!! 319 */ 320 while (fgets(buf, sizeof buf, stdin) != NULL) { 321 if (buf[0] == '\f') { 322 printf(".bp\n"); 323 } 324 if (buf[0] == '.') { 325 printf("%s", buf); 326 if (!strncmp (buf+1, "vS", 2)) 327 pass = true; 328 if (!strncmp (buf+1, "vE", 2)) 329 pass = false; 330 continue; 331 } 332 prccont = false; 333 if (!filter || pass) 334 putScp(buf); 335 else 336 printf("%s", buf); 337 if (prccont && (psptr >= 0)) { 338 ps("'FC "); 339 ps(pstack[psptr]); 340 ps("\n"); 341 } 342 #ifdef DEBUG 343 printf ("com %o str %o chr %o ptr %d\n", incomm, instr, inchr, psptr); 344 #endif 345 margin = 0; 346 } 347 needbp = 1; 348 } while (argc > 0); 349 exit(0); 350 } 351 352 #define isidchr(c) (isalnum((unsigned char)(c)) || (c) == '_') 353 354 static void 355 putScp(char *os) 356 { 357 char *s = os; /* pointer to unmatched string */ 358 char dummy[BUFSIZ]; /* dummy to be used by expmatch */ 359 char *comptr; /* end of a comment delimiter */ 360 char *acmptr; /* end of a comment delimiter */ 361 char *strptr; /* end of a string delimiter */ 362 char *chrptr; /* end of a character const delimiter */ 363 char *blksptr; /* end of a lexical block start */ 364 char *blkeptr; /* end of a lexical block end */ 365 366 x_start = os; /* remember the start for expmatch */ 367 x_escaped = false; 368 if (nokeyw || incomm || instr) 369 goto skip; 370 if (isproc(s)) { 371 ps("'FN "); 372 ps(pname); 373 ps("\n"); 374 if (psptr < PSMAX) { 375 ++psptr; 376 strlcpy(pstack[psptr], pname, sizeof(pstack[psptr])); 377 plstack[psptr] = blklevel; 378 } 379 } 380 skip: 381 do { 382 /* check for string, comment, blockstart, etc */ 383 if (!incomm && !instr && !inchr) { 384 385 blkeptr = expmatch(s, l_blkend, dummy); 386 blksptr = expmatch(s, l_blkbeg, dummy); 387 comptr = expmatch(s, l_combeg, dummy); 388 acmptr = expmatch(s, l_acmbeg, dummy); 389 strptr = expmatch(s, l_strbeg, dummy); 390 chrptr = expmatch(s, l_chrbeg, dummy); 391 392 /* start of a comment? */ 393 if (comptr != NULL) 394 if ((comptr < strptr || strptr == NULL) 395 && (comptr < acmptr || acmptr == NULL) 396 && (comptr < chrptr || chrptr == NULL) 397 && (comptr < blksptr || blksptr == NULL) 398 && (comptr < blkeptr || blkeptr == NULL)) { 399 putKcp(s, comptr-1, false); 400 s = comptr; 401 incomm = true; 402 comtype = STANDARD; 403 if (s != os) 404 ps("\\c"); 405 ps("\\c\n'+C\n"); 406 continue; 407 } 408 409 /* start of a comment? */ 410 if (acmptr != NULL) 411 if ((acmptr < strptr || strptr == NULL) 412 && (acmptr < chrptr || chrptr == NULL) 413 && (acmptr < blksptr || blksptr == NULL) 414 && (acmptr < blkeptr || blkeptr == NULL)) { 415 putKcp(s, acmptr-1, false); 416 s = acmptr; 417 incomm = true; 418 comtype = ALTERNATE; 419 if (s != os) 420 ps("\\c"); 421 ps("\\c\n'+C\n"); 422 continue; 423 } 424 425 /* start of a string? */ 426 if (strptr != NULL) 427 if ((strptr < chrptr || chrptr == NULL) 428 && (strptr < blksptr || blksptr == NULL) 429 && (strptr < blkeptr || blkeptr == NULL)) { 430 putKcp(s, strptr-1, false); 431 s = strptr; 432 instr = true; 433 continue; 434 } 435 436 /* start of a character string? */ 437 if (chrptr != NULL) 438 if ((chrptr < blksptr || blksptr == NULL) 439 && (chrptr < blkeptr || blkeptr == NULL)) { 440 putKcp(s, chrptr-1, false); 441 s = chrptr; 442 inchr = true; 443 continue; 444 } 445 446 /* end of a lexical block */ 447 if (blkeptr != NULL) { 448 if (blkeptr < blksptr || blksptr == NULL) { 449 putKcp(s, blkeptr - 1, false); 450 s = blkeptr; 451 blklevel--; 452 if (psptr >= 0 && plstack[psptr] >= blklevel) { 453 454 /* end of current procedure */ 455 if (s != os) 456 ps("\\c"); 457 ps("\\c\n'-F\n"); 458 blklevel = plstack[psptr]; 459 460 /* see if we should print the last proc name */ 461 if (--psptr >= 0) 462 prccont = true; 463 else 464 psptr = -1; 465 } 466 continue; 467 } 468 } 469 470 /* start of a lexical block */ 471 if (blksptr != NULL) { 472 putKcp(s, blksptr - 1, false); 473 s = blksptr; 474 blklevel++; 475 continue; 476 } 477 478 /* check for end of comment */ 479 } else if (incomm) { 480 comptr = expmatch(s, l_comend, dummy); 481 acmptr = expmatch(s, l_acmend, dummy); 482 if (((comtype == STANDARD) && (comptr != NULL)) || 483 ((comtype == ALTERNATE) && (acmptr != NULL))) { 484 if (comtype == STANDARD) { 485 putKcp(s, comptr-1, true); 486 s = comptr; 487 } else { 488 putKcp(s, acmptr-1, true); 489 s = acmptr; 490 } 491 incomm = false; 492 ps("\\c\n'-C\n"); 493 continue; 494 } else { 495 putKcp(s, s + strlen(s) -1, true); 496 s = s + strlen(s); 497 continue; 498 } 499 500 /* check for end of string */ 501 } else if (instr) { 502 if ((strptr = expmatch(s, l_strend, dummy)) != NULL) { 503 putKcp(s, strptr-1, true); 504 s = strptr; 505 instr = false; 506 continue; 507 } else { 508 putKcp(s, s+strlen(s)-1, true); 509 s = s + strlen(s); 510 continue; 511 } 512 513 /* check for end of character string */ 514 } else if (inchr) { 515 if ((chrptr = expmatch(s, l_chrend, dummy)) != NULL) { 516 putKcp(s, chrptr-1, true); 517 s = chrptr; 518 inchr = false; 519 continue; 520 } else { 521 putKcp(s, s+strlen(s)-1, true); 522 s = s + strlen(s); 523 continue; 524 } 525 } 526 527 /* print out the line */ 528 putKcp(s, s + strlen(s) -1, false); 529 s = s + strlen(s); 530 } while (*s); 531 } 532 533 static void 534 putKcp( 535 char *start, /* start of string to write */ 536 char *end, /* end of string to write */ 537 bool force) /* true if we should force nokeyw */ 538 { 539 int i; 540 int xfld = 0; 541 542 while (start <= end) { 543 if (idx) { 544 if (*start == ' ' || *start == '\t') { 545 if (xfld == 0) 546 printf(""); 547 printf("\t"); 548 xfld = 1; 549 while (*start == ' ' || *start == '\t') 550 start++; 551 continue; 552 } 553 } 554 555 /* take care of nice tab stops */ 556 if (*start == '\t') { 557 while (*start == '\t') 558 start++; 559 i = tabs(x_start, start) - margin / 8; 560 printf("\\h'|%dn'", i * 10 + 1 - margin % 8); 561 continue; 562 } 563 564 if (!nokeyw && !force) 565 if ((*start == '#' || isidchr(*start)) 566 && (start == x_start || !isidchr(start[-1]))) { 567 i = iskw(start); 568 if (i > 0) { 569 ps("\\*(+K"); 570 do 571 putcp(*start++); 572 while (--i > 0); 573 ps("\\*(-K"); 574 continue; 575 } 576 } 577 578 putcp(*start++); 579 } 580 } 581 582 583 static int 584 tabs(char *s, char *os) 585 { 586 587 return width(s, os) / 8; 588 } 589 590 static int 591 width(char *s, char *os) 592 { 593 int i = 0; 594 595 while (s < os) { 596 if (*s == '\t') { 597 i = (i + 8) &~ 7; 598 s++; 599 continue; 600 } 601 if (*s < ' ') 602 i += 2; 603 else 604 i++; 605 s++; 606 } 607 return i; 608 } 609 610 static void 611 putcp(int c) 612 { 613 614 switch(c) { 615 616 case 0: 617 break; 618 619 case '\f': 620 break; 621 622 case '{': 623 ps("\\*(+K{\\*(-K"); 624 break; 625 626 case '}': 627 ps("\\*(+K}\\*(-K"); 628 break; 629 630 case '\\': 631 ps("\\e"); 632 break; 633 634 case '_': 635 ps("\\*_"); 636 break; 637 638 case '-': 639 ps("\\*-"); 640 break; 641 642 case '`': 643 ps("\\`"); 644 break; 645 646 case '\'': 647 ps("\\'"); 648 break; 649 650 case '.': 651 ps("\\&."); 652 break; 653 654 case '*': 655 ps("\\fI*\\fP"); 656 break; 657 658 case '/': 659 ps("\\fI\\h'\\w' 'u-\\w'/'u'/\\fP"); 660 break; 661 662 default: 663 if (c < 040) 664 putchar('^'), c |= '@'; 665 case '\t': 666 case '\n': 667 putchar(c); 668 } 669 } 670 671 /* 672 * look for a process beginning on this line 673 */ 674 static bool 675 isproc(char *s) 676 { 677 pname[0] = '\0'; 678 if (!l_toplex || blklevel == 0) 679 if (expmatch(s, l_prcbeg, pname) != NULL) { 680 return true; 681 } 682 return false; 683 } 684 685 686 /* iskw - check to see if the next word is a keyword 687 */ 688 689 static int 690 iskw(char *s) 691 { 692 char **ss = l_keywds; 693 int i = 1; 694 char *cp = s; 695 696 while (++cp, isidchr((unsigned char)*cp)) 697 i++; 698 while ((cp = *ss++) != NULL) 699 if (!STRNCMP(s,cp,i) && !isidchr((unsigned char)cp[i])) 700 return i; 701 return 0; 702 } 703
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