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1.75 ! bcallah 1: /* $OpenBSD: eval.c,v 1.74 2015/02/05 12:59:57 millert Exp $ */
1.7 millert 2: /* $NetBSD: eval.c,v 1.7 1996/11/10 21:21:29 pk Exp $ */
1.1 deraadt 3:
4: /*
5: * Copyright (c) 1989, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * This code is derived from software contributed to Berkeley by
9: * Ozan Yigit at York University.
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
1.47 millert 19: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: */
35:
36: /*
37: * eval.c
38: * Facility: m4 macro processor
39: * by: oz
40: */
41:
42: #include <sys/types.h>
1.63 espie 43: #include <err.h>
1.1 deraadt 44: #include <errno.h>
1.56 espie 45: #include <limits.h>
1.1 deraadt 46: #include <unistd.h>
47: #include <stdio.h>
1.74 millert 48: #include <stdint.h>
1.1 deraadt 49: #include <stdlib.h>
1.13 espie 50: #include <stddef.h>
1.1 deraadt 51: #include <string.h>
1.6 millert 52: #include <fcntl.h>
1.1 deraadt 53: #include "mdef.h"
54: #include "stdd.h"
55: #include "extern.h"
56: #include "pathnames.h"
57:
1.43 millert 58: static void dodefn(const char *);
59: static void dopushdef(const char *, const char *);
60: static void dodump(const char *[], int);
61: static void dotrace(const char *[], int, int);
62: static void doifelse(const char *[], int);
63: static int doincl(const char *);
64: static int dopaste(const char *);
65: static void dochq(const char *[], int);
66: static void dochc(const char *[], int);
1.55 espie 67: static void dom4wrap(const char *);
1.43 millert 68: static void dodiv(int);
69: static void doundiv(const char *[], int);
70: static void dosub(const char *[], int);
71: static void map(char *, const char *, const char *, const char *);
72: static const char *handledash(char *, char *, const char *);
73: static void expand_builtin(const char *[], int, int);
74: static void expand_macro(const char *[], int);
1.49 espie 75: static void dump_one_def(const char *, struct macro_definition *);
1.30 espie 76:
1.34 espie 77: unsigned long expansion_id;
1.30 espie 78:
1.1 deraadt 79: /*
1.30 espie 80: * eval - eval all macros and builtins calls
1.39 espie 81: * argc - number of elements in argv.
82: * argv - element vector :
83: * argv[0] = definition of a user
1.49 espie 84: * macro or NULL if built-in.
1.39 espie 85: * argv[1] = name of the macro or
86: * built-in.
87: * argv[2] = parameters to user-defined
88: * . macro or built-in.
89: * .
90: *
91: * A call in the form of macro-or-builtin() will result in:
92: * argv[0] = nullstr
93: * argv[1] = macro-or-builtin
94: * argv[2] = nullstr
95: *
96: * argc is 3 for macro-or-builtin() and 2 for macro-or-builtin
1.30 espie 97: */
98: void
1.50 espie 99: eval(const char *argv[], int argc, int td, int is_traced)
1.30 espie 100: {
1.59 espie 101: size_t mark = SIZE_MAX;
1.35 espie 102:
1.34 espie 103: expansion_id++;
1.68 marco 104: if (td & RECDEF)
1.60 espie 105: m4errx(1, "expanding recursive definition for %s.", argv[1]);
1.50 espie 106: if (is_traced)
1.35 espie 107: mark = trace(argv, argc, infile+ilevel);
1.30 espie 108: if (td == MACRTYPE)
109: expand_macro(argv, argc);
110: else
111: expand_builtin(argv, argc, td);
1.68 marco 112: if (mark != SIZE_MAX)
1.35 espie 113: finish_trace(mark);
1.30 espie 114: }
115:
116: /*
117: * expand_builtin - evaluate built-in macros.
1.1 deraadt 118: */
119: void
1.44 espie 120: expand_builtin(const char *argv[], int argc, int td)
1.1 deraadt 121: {
1.17 espie 122: int c, n;
1.39 espie 123: int ac;
1.1 deraadt 124: static int sysval = 0;
125:
126: #ifdef DEBUG
127: printf("argc = %d\n", argc);
128: for (n = 0; n < argc; n++)
129: printf("argv[%d] = %s\n", n, argv[n]);
1.42 espie 130: fflush(stdout);
1.1 deraadt 131: #endif
1.22 espie 132:
1.1 deraadt 133: /*
134: * if argc == 3 and argv[2] is null, then we
135: * have macro-or-builtin() type call. We adjust
136: * argc to avoid further checking..
137: */
1.58 espie 138: /* we keep the initial value for those built-ins that differentiate
139: * between builtin() and builtin.
140: */
1.68 marco 141: ac = argc;
1.39 espie 142:
1.66 espie 143: if (argc == 3 && !*(argv[2]) && !mimic_gnu)
1.1 deraadt 144: argc--;
145:
1.22 espie 146: switch (td & TYPEMASK) {
1.1 deraadt 147:
148: case DEFITYPE:
149: if (argc > 2)
150: dodefine(argv[2], (argc > 3) ? argv[3] : null);
151: break;
152:
153: case PUSDTYPE:
154: if (argc > 2)
155: dopushdef(argv[2], (argc > 3) ? argv[3] : null);
156: break;
157:
158: case DUMPTYPE:
159: dodump(argv, argc);
160: break;
161:
1.37 espie 162: case TRACEONTYPE:
163: dotrace(argv, argc, 1);
164: break;
165:
166: case TRACEOFFTYPE:
167: dotrace(argv, argc, 0);
168: break;
169:
1.1 deraadt 170: case EXPRTYPE:
171: /*
172: * doexpr - evaluate arithmetic
173: * expression
174: */
1.56 espie 175: {
176: int base = 10;
177: int maxdigits = 0;
178: const char *errstr;
179:
180: if (argc > 3) {
181: base = strtonum(argv[3], 2, 36, &errstr);
182: if (errstr) {
1.60 espie 183: m4errx(1, "expr: base %s invalid.", argv[3]);
1.56 espie 184: }
185: }
186: if (argc > 4) {
187: maxdigits = strtonum(argv[4], 0, INT_MAX, &errstr);
188: if (errstr) {
1.60 espie 189: m4errx(1, "expr: maxdigits %s invalid.", argv[4]);
1.56 espie 190: }
191: }
1.1 deraadt 192: if (argc > 2)
1.56 espie 193: pbnumbase(expr(argv[2]), base, maxdigits);
1.1 deraadt 194: break;
1.56 espie 195: }
1.1 deraadt 196:
197: case IFELTYPE:
198: if (argc > 4)
199: doifelse(argv, argc);
200: break;
201:
202: case IFDFTYPE:
203: /*
204: * doifdef - select one of two
205: * alternatives based on the existence of
206: * another definition
207: */
208: if (argc > 3) {
1.49 espie 209: if (lookup_macro_definition(argv[2]) != NULL)
1.1 deraadt 210: pbstr(argv[3]);
211: else if (argc > 4)
212: pbstr(argv[4]);
213: }
214: break;
215:
216: case LENGTYPE:
217: /*
218: * dolen - find the length of the
219: * argument
220: */
1.18 espie 221: pbnum((argc > 2) ? strlen(argv[2]) : 0);
1.1 deraadt 222: break;
223:
224: case INCRTYPE:
225: /*
226: * doincr - increment the value of the
227: * argument
228: */
229: if (argc > 2)
230: pbnum(atoi(argv[2]) + 1);
231: break;
232:
233: case DECRTYPE:
234: /*
235: * dodecr - decrement the value of the
236: * argument
237: */
238: if (argc > 2)
239: pbnum(atoi(argv[2]) - 1);
240: break;
241:
242: case SYSCTYPE:
243: /*
244: * dosys - execute system command
245: */
1.54 robert 246: if (argc > 2) {
247: fflush(stdout);
1.1 deraadt 248: sysval = system(argv[2]);
1.54 robert 249: }
1.1 deraadt 250: break;
251:
252: case SYSVTYPE:
253: /*
254: * dosysval - return value of the last
255: * system call.
1.68 marco 256: *
1.1 deraadt 257: */
258: pbnum(sysval);
259: break;
260:
1.27 espie 261: case ESYSCMDTYPE:
262: if (argc > 2)
263: doesyscmd(argv[2]);
1.68 marco 264: break;
1.1 deraadt 265: case INCLTYPE:
1.71 deraadt 266: if (argc > 2) {
267: if (!doincl(argv[2])) {
1.70 espie 268: if (mimic_gnu) {
269: warn("%s at line %lu: include(%s)",
270: CURRENT_NAME, CURRENT_LINE, argv[2]);
271: exit_code = 1;
1.75 ! bcallah 272: if (fatal_warns) {
! 273: killdiv();
! 274: exit(exit_code);
! 275: }
1.70 espie 276: } else
277: err(1, "%s at line %lu: include(%s)",
278: CURRENT_NAME, CURRENT_LINE, argv[2]);
1.71 deraadt 279: }
280: }
1.1 deraadt 281: break;
282:
283: case SINCTYPE:
284: if (argc > 2)
285: (void) doincl(argv[2]);
286: break;
287: #ifdef EXTENDED
288: case PASTTYPE:
289: if (argc > 2)
290: if (!dopaste(argv[2]))
1.24 espie 291: err(1, "%s at line %lu: paste(%s)",
292: CURRENT_NAME, CURRENT_LINE, argv[2]);
1.1 deraadt 293: break;
294:
295: case SPASTYPE:
296: if (argc > 2)
297: (void) dopaste(argv[2]);
1.61 espie 298: break;
299: case FORMATTYPE:
1.62 espie 300: doformat(argv, argc);
1.1 deraadt 301: break;
302: #endif
303: case CHNQTYPE:
1.58 espie 304: dochq(argv, ac);
1.1 deraadt 305: break;
306:
307: case CHNCTYPE:
1.58 espie 308: dochc(argv, argc);
1.1 deraadt 309: break;
310:
311: case SUBSTYPE:
312: /*
313: * dosub - select substring
1.68 marco 314: *
1.1 deraadt 315: */
316: if (argc > 3)
317: dosub(argv, argc);
318: break;
319:
320: case SHIFTYPE:
321: /*
322: * doshift - push back all arguments
323: * except the first one (i.e. skip
324: * argv[2])
325: */
326: if (argc > 3) {
327: for (n = argc - 1; n > 3; n--) {
1.10 deraadt 328: pbstr(rquote);
1.1 deraadt 329: pbstr(argv[n]);
1.10 deraadt 330: pbstr(lquote);
1.58 espie 331: pushback(COMMA);
1.1 deraadt 332: }
1.10 deraadt 333: pbstr(rquote);
1.1 deraadt 334: pbstr(argv[3]);
1.10 deraadt 335: pbstr(lquote);
1.1 deraadt 336: }
337: break;
338:
339: case DIVRTYPE:
340: if (argc > 2 && (n = atoi(argv[2])) != 0)
341: dodiv(n);
342: else {
343: active = stdout;
344: oindex = 0;
345: }
346: break;
347:
348: case UNDVTYPE:
349: doundiv(argv, argc);
350: break;
351:
352: case DIVNTYPE:
353: /*
354: * dodivnum - return the number of
355: * current output diversion
356: */
357: pbnum(oindex);
358: break;
359:
360: case UNDFTYPE:
361: /*
362: * doundefine - undefine a previously
363: * defined macro(s) or m4 keyword(s).
364: */
365: if (argc > 2)
366: for (n = 2; n < argc; n++)
1.49 espie 367: macro_undefine(argv[n]);
1.1 deraadt 368: break;
369:
370: case POPDTYPE:
371: /*
372: * dopopdef - remove the topmost
373: * definitions of macro(s) or m4
374: * keyword(s).
375: */
376: if (argc > 2)
377: for (n = 2; n < argc; n++)
1.49 espie 378: macro_popdef(argv[n]);
1.1 deraadt 379: break;
380:
381: case MKTMTYPE:
382: /*
383: * dotemp - create a temporary file
384: */
1.16 espie 385: if (argc > 2) {
386: int fd;
1.20 espie 387: char *temp;
388:
389: temp = xstrdup(argv[2]);
1.68 marco 390:
1.20 espie 391: fd = mkstemp(temp);
1.16 espie 392: if (fd == -1)
1.68 marco 393: err(1,
394: "%s at line %lu: couldn't make temp file %s",
1.24 espie 395: CURRENT_NAME, CURRENT_LINE, argv[2]);
1.16 espie 396: close(fd);
1.20 espie 397: pbstr(temp);
398: free(temp);
1.16 espie 399: }
1.1 deraadt 400: break;
401:
402: case TRNLTYPE:
403: /*
404: * dotranslit - replace all characters in
405: * the source string that appears in the
406: * "from" string with the corresponding
407: * characters in the "to" string.
408: */
409: if (argc > 3) {
1.42 espie 410: char *temp;
411:
1.51 espie 412: temp = xalloc(strlen(argv[2])+1, NULL);
1.1 deraadt 413: if (argc > 4)
414: map(temp, argv[2], argv[3], argv[4]);
415: else
416: map(temp, argv[2], argv[3], null);
417: pbstr(temp);
1.42 espie 418: free(temp);
1.8 deraadt 419: } else if (argc > 2)
1.1 deraadt 420: pbstr(argv[2]);
421: break;
422:
423: case INDXTYPE:
424: /*
425: * doindex - find the index of the second
426: * argument string in the first argument
427: * string. -1 if not present.
428: */
429: pbnum((argc > 3) ? indx(argv[2], argv[3]) : -1);
430: break;
431:
432: case ERRPTYPE:
433: /*
434: * doerrp - print the arguments to stderr
435: * file
436: */
437: if (argc > 2) {
438: for (n = 2; n < argc; n++)
439: fprintf(stderr, "%s ", argv[n]);
440: fprintf(stderr, "\n");
441: }
442: break;
443:
444: case DNLNTYPE:
445: /*
446: * dodnl - eat-up-to and including
447: * newline
448: */
449: while ((c = gpbc()) != '\n' && c != EOF)
450: ;
451: break;
452:
453: case M4WRTYPE:
454: /*
455: * dom4wrap - set up for
456: * wrap-up/wind-down activity
457: */
1.55 espie 458: if (argc > 2)
459: dom4wrap(argv[2]);
1.1 deraadt 460: break;
461:
462: case EXITTYPE:
463: /*
464: * doexit - immediate exit from m4.
465: */
466: killdiv();
467: exit((argc > 2) ? atoi(argv[2]) : 0);
468: break;
469:
470: case DEFNTYPE:
471: if (argc > 2)
472: for (n = 2; n < argc; n++)
473: dodefn(argv[n]);
474: break;
475:
1.25 espie 476: case INDIRTYPE: /* Indirect call */
477: if (argc > 2)
478: doindir(argv, argc);
479: break;
1.68 marco 480:
1.25 espie 481: case BUILTINTYPE: /* Builtins only */
482: if (argc > 2)
483: dobuiltin(argv, argc);
484: break;
485:
486: case PATSTYPE:
487: if (argc > 2)
488: dopatsubst(argv, argc);
489: break;
490: case REGEXPTYPE:
491: if (argc > 2)
492: doregexp(argv, argc);
493: break;
494: case LINETYPE:
495: doprintlineno(infile+ilevel);
496: break;
497: case FILENAMETYPE:
498: doprintfilename(infile+ilevel);
499: break;
1.23 espie 500: case SELFTYPE:
501: pbstr(rquote);
502: pbstr(argv[1]);
503: pbstr(lquote);
504: break;
1.1 deraadt 505: default:
1.60 espie 506: m4errx(1, "eval: major botch.");
1.1 deraadt 507: break;
508: }
509: }
510:
511: /*
1.30 espie 512: * expand_macro - user-defined macro expansion
1.1 deraadt 513: */
514: void
1.44 espie 515: expand_macro(const char *argv[], int argc)
1.1 deraadt 516: {
1.20 espie 517: const char *t;
518: const char *p;
1.17 espie 519: int n;
520: int argno;
1.1 deraadt 521:
522: t = argv[0]; /* defn string as a whole */
523: p = t;
524: while (*p)
525: p++;
526: p--; /* last character of defn */
527: while (p > t) {
528: if (*(p - 1) != ARGFLAG)
1.58 espie 529: PUSHBACK(*p);
1.1 deraadt 530: else {
531: switch (*p) {
532:
533: case '#':
534: pbnum(argc - 2);
535: break;
536: case '0':
537: case '1':
538: case '2':
539: case '3':
540: case '4':
541: case '5':
542: case '6':
543: case '7':
544: case '8':
545: case '9':
546: if ((argno = *p - '0') < argc - 1)
547: pbstr(argv[argno + 1]);
548: break;
549: case '*':
1.41 espie 550: if (argc > 2) {
551: for (n = argc - 1; n > 2; n--) {
552: pbstr(argv[n]);
1.58 espie 553: pushback(COMMA);
1.41 espie 554: }
555: pbstr(argv[2]);
1.68 marco 556: }
1.1 deraadt 557: break;
1.7 millert 558: case '@':
1.41 espie 559: if (argc > 2) {
560: for (n = argc - 1; n > 2; n--) {
561: pbstr(rquote);
562: pbstr(argv[n]);
563: pbstr(lquote);
1.58 espie 564: pushback(COMMA);
1.41 espie 565: }
566: pbstr(rquote);
567: pbstr(argv[2]);
568: pbstr(lquote);
569: }
1.7 millert 570: break;
1.1 deraadt 571: default:
1.58 espie 572: PUSHBACK(*p);
573: PUSHBACK('$');
1.1 deraadt 574: break;
575: }
576: p--;
577: }
578: p--;
579: }
580: if (p == t) /* do last character */
1.58 espie 581: PUSHBACK(*p);
1.1 deraadt 582: }
583:
1.48 espie 584:
1.1 deraadt 585: /*
1.48 espie 586: * dodefine - install definition in the table
587: */
588: void
589: dodefine(const char *name, const char *defn)
590: {
1.66 espie 591: if (!*name && !mimic_gnu)
1.60 espie 592: m4errx(1, "null definition.");
1.68 marco 593: else
1.66 espie 594: macro_define(name, defn);
1.1 deraadt 595: }
596:
597: /*
598: * dodefn - push back a quoted definition of
599: * the given name.
600: */
1.20 espie 601: static void
1.44 espie 602: dodefn(const char *name)
1.1 deraadt 603: {
1.49 espie 604: struct macro_definition *p;
1.1 deraadt 605:
1.49 espie 606: if ((p = lookup_macro_definition(name)) != NULL) {
1.48 espie 607: if ((p->type & TYPEMASK) == MACRTYPE) {
1.40 espie 608: pbstr(rquote);
609: pbstr(p->defn);
610: pbstr(lquote);
1.48 espie 611: } else {
612: pbstr(p->defn);
1.31 espie 613: pbstr(BUILTIN_MARKER);
614: }
1.1 deraadt 615: }
616: }
617:
618: /*
619: * dopushdef - install a definition in the hash table
620: * without removing a previous definition. Since
621: * each new entry is entered in *front* of the
622: * hash bucket, it hides a previous definition from
623: * lookup.
624: */
1.20 espie 625: static void
1.44 espie 626: dopushdef(const char *name, const char *defn)
1.1 deraadt 627: {
1.66 espie 628: if (!*name && !mimic_gnu)
1.60 espie 629: m4errx(1, "null definition.");
1.66 espie 630: else
631: macro_pushdef(name, defn);
1.1 deraadt 632: }
633:
634: /*
1.32 espie 635: * dump_one_def - dump the specified definition.
636: */
637: static void
1.49 espie 638: dump_one_def(const char *name, struct macro_definition *p)
1.32 espie 639: {
1.53 espie 640: if (!traceout)
641: traceout = stderr;
1.33 espie 642: if (mimic_gnu) {
643: if ((p->type & TYPEMASK) == MACRTYPE)
1.49 espie 644: fprintf(traceout, "%s:\t%s\n", name, p->defn);
1.33 espie 645: else {
1.49 espie 646: fprintf(traceout, "%s:\t<%s>\n", name, p->defn);
1.68 marco 647: }
1.33 espie 648: } else
1.49 espie 649: fprintf(traceout, "`%s'\t`%s'\n", name, p->defn);
1.32 espie 650: }
651:
652: /*
1.1 deraadt 653: * dodumpdef - dump the specified definitions in the hash
654: * table to stderr. If nothing is specified, the entire
655: * hash table is dumped.
656: */
1.20 espie 657: static void
1.44 espie 658: dodump(const char *argv[], int argc)
1.1 deraadt 659: {
1.17 espie 660: int n;
1.49 espie 661: struct macro_definition *p;
1.1 deraadt 662:
663: if (argc > 2) {
664: for (n = 2; n < argc; n++)
1.49 espie 665: if ((p = lookup_macro_definition(argv[n])) != NULL)
666: dump_one_def(argv[n], p);
667: } else
668: macro_for_all(dump_one_def);
1.37 espie 669: }
670:
671: /*
672: * dotrace - mark some macros as traced/untraced depending upon on.
673: */
674: static void
1.44 espie 675: dotrace(const char *argv[], int argc, int on)
1.37 espie 676: {
677: int n;
678:
679: if (argc > 2) {
680: for (n = 2; n < argc; n++)
681: mark_traced(argv[n], on);
682: } else
683: mark_traced(NULL, on);
1.1 deraadt 684: }
685:
686: /*
687: * doifelse - select one of two alternatives - loop.
688: */
1.20 espie 689: static void
1.44 espie 690: doifelse(const char *argv[], int argc)
1.1 deraadt 691: {
692: cycle {
693: if (STREQ(argv[2], argv[3]))
694: pbstr(argv[4]);
695: else if (argc == 6)
696: pbstr(argv[5]);
697: else if (argc > 6) {
698: argv += 3;
699: argc -= 3;
700: continue;
701: }
702: break;
703: }
704: }
705:
706: /*
707: * doinclude - include a given file.
708: */
1.20 espie 709: static int
1.44 espie 710: doincl(const char *ifile)
1.1 deraadt 711: {
712: if (ilevel + 1 == MAXINP)
1.60 espie 713: m4errx(1, "too many include files.");
1.24 espie 714: if (fopen_trypath(infile+ilevel+1, ifile) != NULL) {
1.1 deraadt 715: ilevel++;
716: bbase[ilevel] = bufbase = bp;
717: return (1);
1.8 deraadt 718: } else
1.1 deraadt 719: return (0);
720: }
721:
722: #ifdef EXTENDED
723: /*
724: * dopaste - include a given file without any
725: * macro processing.
726: */
1.20 espie 727: static int
1.44 espie 728: dopaste(const char *pfile)
1.1 deraadt 729: {
730: FILE *pf;
1.17 espie 731: int c;
1.1 deraadt 732:
733: if ((pf = fopen(pfile, "r")) != NULL) {
1.45 espie 734: if (synch_lines)
735: fprintf(active, "#line 1 \"%s\"\n", pfile);
1.1 deraadt 736: while ((c = getc(pf)) != EOF)
737: putc(c, active);
738: (void) fclose(pf);
1.45 espie 739: emit_synchline();
1.1 deraadt 740: return (1);
1.8 deraadt 741: } else
1.1 deraadt 742: return (0);
743: }
744: #endif
745:
1.58 espie 746: /*
747: * dochq - change quote characters
748: */
1.39 espie 749: static void
1.58 espie 750: dochq(const char *argv[], int ac)
1.39 espie 751: {
752: if (ac == 2) {
1.58 espie 753: lquote[0] = LQUOTE; lquote[1] = EOS;
754: rquote[0] = RQUOTE; rquote[1] = EOS;
1.39 espie 755: } else {
756: strlcpy(lquote, argv[2], sizeof(lquote));
1.58 espie 757: if (ac > 3) {
1.39 espie 758: strlcpy(rquote, argv[3], sizeof(rquote));
1.58 espie 759: } else {
760: rquote[0] = ECOMMT; rquote[1] = EOS;
761: }
1.39 espie 762: }
763: }
764:
1.1 deraadt 765: /*
1.58 espie 766: * dochc - change comment characters
1.1 deraadt 767: */
1.20 espie 768: static void
1.58 espie 769: dochc(const char *argv[], int argc)
1.1 deraadt 770: {
1.58 espie 771: /* XXX Note that there is no difference between no argument and a single
772: * empty argument.
773: */
774: if (argc == 2) {
1.39 espie 775: scommt[0] = EOS;
776: ecommt[0] = EOS;
777: } else {
1.58 espie 778: strlcpy(scommt, argv[2], sizeof(scommt));
779: if (argc == 3) {
780: ecommt[0] = ECOMMT; ecommt[1] = EOS;
781: } else {
1.39 espie 782: strlcpy(ecommt, argv[3], sizeof(ecommt));
1.1 deraadt 783: }
784: }
1.55 espie 785: }
786:
787: /*
788: * dom4wrap - expand text at EOF
789: */
790: static void
791: dom4wrap(const char *text)
792: {
793: if (wrapindex >= maxwraps) {
794: if (maxwraps == 0)
795: maxwraps = 16;
796: else
797: maxwraps *= 2;
1.72 espie 798: m4wraps = xreallocarray(m4wraps, maxwraps, sizeof(*m4wraps),
1.55 espie 799: "too many m4wraps");
800: }
801: m4wraps[wrapindex++] = xstrdup(text);
1.1 deraadt 802: }
803:
804: /*
805: * dodivert - divert the output to a temporary file
806: */
1.20 espie 807: static void
1.44 espie 808: dodiv(int n)
1.1 deraadt 809: {
1.6 millert 810: int fd;
811:
1.8 deraadt 812: oindex = n;
1.28 espie 813: if (n >= maxout) {
814: if (mimic_gnu)
815: resizedivs(n + 10);
816: else
817: n = 0; /* bitbucket */
1.68 marco 818: }
1.28 espie 819:
820: if (n < 0)
1.1 deraadt 821: n = 0; /* bitbucket */
822: if (outfile[n] == NULL) {
1.13 espie 823: char fname[] = _PATH_DIVNAME;
824:
1.73 espie 825: if ((fd = mkstemp(fname)) < 0 ||
826: unlink(fname) == -1 ||
827: (outfile[n] = fdopen(fd, "w+")) == NULL)
828: err(1, "%s: cannot divert", fname);
1.1 deraadt 829: }
830: active = outfile[n];
831: }
832:
833: /*
834: * doundivert - undivert a specified output, or all
835: * other outputs, in numerical order.
836: */
1.20 espie 837: static void
1.44 espie 838: doundiv(const char *argv[], int argc)
1.1 deraadt 839: {
1.17 espie 840: int ind;
841: int n;
1.1 deraadt 842:
843: if (argc > 2) {
844: for (ind = 2; ind < argc; ind++) {
1.56 espie 845: const char *errstr;
846: n = strtonum(argv[ind], 1, INT_MAX, &errstr);
847: if (errstr) {
848: if (errno == EINVAL && mimic_gnu)
849: getdivfile(argv[ind]);
850: } else {
851: if (n < maxout && outfile[n] != NULL)
852: getdiv(n);
853: }
1.1 deraadt 854: }
855: }
856: else
1.28 espie 857: for (n = 1; n < maxout; n++)
1.1 deraadt 858: if (outfile[n] != NULL)
859: getdiv(n);
860: }
861:
862: /*
863: * dosub - select substring
864: */
1.20 espie 865: static void
1.44 espie 866: dosub(const char *argv[], int argc)
1.1 deraadt 867: {
1.20 espie 868: const char *ap, *fc, *k;
1.17 espie 869: int nc;
1.1 deraadt 870:
1.29 espie 871: ap = argv[2]; /* target string */
1.1 deraadt 872: #ifdef EXPR
1.29 espie 873: fc = ap + expr(argv[3]); /* first char */
1.1 deraadt 874: #else
1.29 espie 875: fc = ap + atoi(argv[3]); /* first char */
1.1 deraadt 876: #endif
1.29 espie 877: nc = strlen(fc);
878: if (argc >= 5)
1.1 deraadt 879: #ifdef EXPR
1.29 espie 880: nc = min(nc, expr(argv[4]));
1.1 deraadt 881: #else
1.29 espie 882: nc = min(nc, atoi(argv[4]));
1.1 deraadt 883: #endif
884: if (fc >= ap && fc < ap + strlen(ap))
1.29 espie 885: for (k = fc + nc - 1; k >= fc; k--)
1.58 espie 886: pushback(*k);
1.1 deraadt 887: }
888:
889: /*
890: * map:
891: * map every character of s1 that is specified in from
892: * into s3 and replace in s. (source s1 remains untouched)
893: *
1.69 espie 894: * This is derived from the a standard implementation of map(s,from,to)
895: * function of ICON language. Within mapvec, we replace every character
896: * of "from" with the corresponding character in "to".
897: * If "to" is shorter than "from", than the corresponding entries are null,
898: * which means that those characters dissapear altogether.
1.1 deraadt 899: */
1.20 espie 900: static void
1.44 espie 901: map(char *dest, const char *src, const char *from, const char *to)
1.1 deraadt 902: {
1.20 espie 903: const char *tmp;
1.19 espie 904: unsigned char sch, dch;
1.26 espie 905: static char frombis[257];
906: static char tobis[257];
1.67 espie 907: int i;
908: char seen[256];
1.19 espie 909: static unsigned char mapvec[256] = {
910: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18,
911: 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
912: 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52,
913: 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69,
914: 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86,
915: 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102,
916: 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115,
917: 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128,
918: 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141,
919: 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154,
920: 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167,
921: 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180,
922: 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193,
923: 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206,
924: 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219,
925: 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232,
926: 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245,
927: 246, 247, 248, 249, 250, 251, 252, 253, 254, 255
1.1 deraadt 928: };
929:
930: if (*src) {
1.26 espie 931: if (mimic_gnu) {
932: /*
933: * expand character ranges on the fly
934: */
935: from = handledash(frombis, frombis + 256, from);
936: to = handledash(tobis, tobis + 256, to);
937: }
1.1 deraadt 938: tmp = from;
939: /*
940: * create a mapping between "from" and
941: * "to"
942: */
1.67 espie 943: for (i = 0; i < 256; i++)
944: seen[i] = 0;
945: while (*from) {
946: if (!seen[(unsigned char)(*from)]) {
947: mapvec[(unsigned char)(*from)] = (unsigned char)(*to);
948: seen[(unsigned char)(*from)] = 1;
949: }
950: from++;
951: if (*to)
952: to++;
953: }
1.1 deraadt 954:
955: while (*src) {
1.19 espie 956: sch = (unsigned char)(*src++);
1.1 deraadt 957: dch = mapvec[sch];
1.19 espie 958: if ((*dest = (char)dch))
1.1 deraadt 959: dest++;
960: }
961: /*
962: * restore all the changed characters
963: */
964: while (*tmp) {
1.19 espie 965: mapvec[(unsigned char)(*tmp)] = (unsigned char)(*tmp);
1.1 deraadt 966: tmp++;
967: }
968: }
1.19 espie 969: *dest = '\0';
1.1 deraadt 970: }
1.26 espie 971:
972:
973: /*
974: * handledash:
975: * use buffer to copy the src string, expanding character ranges
976: * on the way.
977: */
978: static const char *
1.44 espie 979: handledash(char *buffer, char *end, const char *src)
1.26 espie 980: {
981: char *p;
1.68 marco 982:
1.26 espie 983: p = buffer;
984: while(*src) {
985: if (src[1] == '-' && src[2]) {
986: unsigned char i;
1.56 espie 987: if ((unsigned char)src[0] <= (unsigned char)src[2]) {
988: for (i = (unsigned char)src[0];
989: i <= (unsigned char)src[2]; i++) {
990: *p++ = i;
991: if (p == end) {
992: *p = '\0';
993: return buffer;
994: }
995: }
996: } else {
997: for (i = (unsigned char)src[0];
998: i >= (unsigned char)src[2]; i--) {
999: *p++ = i;
1000: if (p == end) {
1001: *p = '\0';
1002: return buffer;
1003: }
1.26 espie 1004: }
1005: }
1006: src += 3;
1007: } else
1008: *p++ = *src++;
1009: if (p == end)
1010: break;
1011: }
1012: *p = '\0';
1013: return buffer;
1014: }