Annotation of mandoc/man_validate.c, Revision 1.151
1.151 ! schwarze 1: /* $Id$ */
1.1 kristaps 2: /*
1.151 ! schwarze 3: * Copyright (c) 2010, 2012-2020 Ingo Schwarze <schwarze@openbsd.org>
1.63 schwarze 4: * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
1.8 kristaps 7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 9: *
1.114 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.8 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.114 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.8 kristaps 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.151 ! schwarze 17: *
! 18: * Validation module for man(7) syntax trees used by mandoc(1).
1.1 kristaps 19: */
1.28 kristaps 20: #include "config.h"
21:
1.1 kristaps 22: #include <sys/types.h>
23:
24: #include <assert.h>
25: #include <ctype.h>
1.16 kristaps 26: #include <errno.h>
27: #include <limits.h>
1.1 kristaps 28: #include <stdarg.h>
1.140 schwarze 29: #include <stdio.h>
1.1 kristaps 30: #include <stdlib.h>
1.46 kristaps 31: #include <string.h>
1.50 kristaps 32: #include <time.h>
1.1 kristaps 33:
1.114 schwarze 34: #include "mandoc_aux.h"
35: #include "mandoc.h"
36: #include "roff.h"
1.151 ! schwarze 37: #include "tag.h"
1.66 kristaps 38: #include "man.h"
1.114 schwarze 39: #include "libmandoc.h"
1.118 schwarze 40: #include "roff_int.h"
1.1 kristaps 41: #include "libman.h"
42:
1.117 schwarze 43: #define CHKARGS struct roff_man *man, struct roff_node *n
1.1 kristaps 44:
1.107 schwarze 45: typedef void (*v_check)(CHKARGS);
1.1 kristaps 46:
1.148 schwarze 47: static void check_abort(CHKARGS) __attribute__((__noreturn__));
1.107 schwarze 48: static void check_par(CHKARGS);
49: static void check_part(CHKARGS);
50: static void check_root(CHKARGS);
1.151 ! schwarze 51: static void check_tag(struct roff_node *, struct roff_node *);
1.107 schwarze 52: static void check_text(CHKARGS);
53:
54: static void post_AT(CHKARGS);
1.145 schwarze 55: static void post_EE(CHKARGS);
56: static void post_EX(CHKARGS);
1.107 schwarze 57: static void post_IP(CHKARGS);
1.113 schwarze 58: static void post_OP(CHKARGS);
1.139 schwarze 59: static void post_SH(CHKARGS);
1.107 schwarze 60: static void post_TH(CHKARGS);
1.151 ! schwarze 61: static void post_TP(CHKARGS);
1.107 schwarze 62: static void post_UC(CHKARGS);
63: static void post_UR(CHKARGS);
1.129 schwarze 64: static void post_in(CHKARGS);
1.51 kristaps 65:
1.135 schwarze 66: static const v_check man_valids[MAN_MAX - MAN_TH] = {
1.104 schwarze 67: post_TH, /* TH */
1.139 schwarze 68: post_SH, /* SH */
69: post_SH, /* SS */
1.151 ! schwarze 70: post_TP, /* TP */
! 71: post_TP, /* TQ */
1.138 schwarze 72: check_abort,/* LP */
1.104 schwarze 73: check_par, /* PP */
1.138 schwarze 74: check_abort,/* P */
1.104 schwarze 75: post_IP, /* IP */
76: NULL, /* HP */
77: NULL, /* SM */
78: NULL, /* SB */
79: NULL, /* BI */
80: NULL, /* IB */
81: NULL, /* BR */
82: NULL, /* RB */
83: NULL, /* R */
84: NULL, /* B */
85: NULL, /* I */
86: NULL, /* IR */
87: NULL, /* RI */
88: NULL, /* RE */
89: check_part, /* RS */
90: NULL, /* DT */
91: post_UC, /* UC */
1.112 schwarze 92: NULL, /* PD */
1.104 schwarze 93: post_AT, /* AT */
1.129 schwarze 94: post_in, /* in */
1.137 schwarze 95: NULL, /* SY */
96: NULL, /* YS */
1.113 schwarze 97: post_OP, /* OP */
1.145 schwarze 98: post_EX, /* EX */
99: post_EE, /* EE */
1.104 schwarze 100: post_UR, /* UR */
101: NULL, /* UE */
1.132 schwarze 102: post_UR, /* MT */
103: NULL, /* ME */
1.1 kristaps 104: };
105:
106:
1.138 schwarze 107: /* Validate the subtree rooted at man->last. */
1.107 schwarze 108: void
1.143 schwarze 109: man_validate(struct roff_man *man)
1.1 kristaps 110: {
1.115 schwarze 111: struct roff_node *n;
1.123 schwarze 112: const v_check *cp;
1.1 kristaps 113:
1.138 schwarze 114: /*
115: * Translate obsolete macros such that later code
116: * does not need to look for them.
117: */
118:
1.104 schwarze 119: n = man->last;
1.138 schwarze 120: switch (n->tok) {
121: case MAN_LP:
122: case MAN_P:
123: n->tok = MAN_PP;
124: break;
125: default:
126: break;
127: }
128:
129: /*
130: * Iterate over all children, recursing into each one
131: * in turn, depth-first.
132: */
133:
1.121 schwarze 134: man->last = man->last->child;
135: while (man->last != NULL) {
1.143 schwarze 136: man_validate(man);
1.121 schwarze 137: if (man->last == n)
138: man->last = man->last->child;
139: else
140: man->last = man->last->next;
141: }
1.1 kristaps 142:
1.138 schwarze 143: /* Finally validate the macro itself. */
144:
1.121 schwarze 145: man->last = n;
146: man->next = ROFF_NEXT_SIBLING;
1.104 schwarze 147: switch (n->type) {
1.114 schwarze 148: case ROFFT_TEXT:
1.107 schwarze 149: check_text(man, n);
150: break;
1.114 schwarze 151: case ROFFT_ROOT:
1.107 schwarze 152: check_root(man, n);
153: break;
1.134 schwarze 154: case ROFFT_COMMENT:
1.114 schwarze 155: case ROFFT_EQN:
156: case ROFFT_TBL:
1.107 schwarze 157: break;
1.1 kristaps 158: default:
1.124 schwarze 159: if (n->tok < ROFF_MAX) {
1.139 schwarze 160: roff_validate(man);
1.124 schwarze 161: break;
162: }
163: assert(n->tok >= MAN_TH && n->tok < MAN_MAX);
1.135 schwarze 164: cp = man_valids + (n->tok - MAN_TH);
1.107 schwarze 165: if (*cp)
166: (*cp)(man, n);
1.121 schwarze 167: if (man->last == n)
1.146 schwarze 168: n->flags |= NODE_VALID;
1.107 schwarze 169: break;
1.1 kristaps 170: }
171: }
172:
1.107 schwarze 173: static void
1.91 schwarze 174: check_root(CHKARGS)
1.14 kristaps 175: {
1.101 schwarze 176: assert((man->flags & (MAN_BLINE | MAN_ELINE)) == 0);
1.17 kristaps 177:
1.134 schwarze 178: if (n->last == NULL || n->last->type == ROFFT_COMMENT)
1.141 schwarze 179: mandoc_msg(MANDOCERR_DOC_EMPTY, n->line, n->pos, NULL);
1.93 schwarze 180: else
181: man->meta.hasbody = 1;
182:
183: if (NULL == man->meta.title) {
1.141 schwarze 184: mandoc_msg(MANDOCERR_TH_NOTITLE, n->line, n->pos, NULL);
1.54 kristaps 185:
1.34 kristaps 186: /*
187: * If a title hasn't been set, do so now (by
188: * implication, date and section also aren't set).
189: */
1.54 kristaps 190:
1.105 schwarze 191: man->meta.title = mandoc_strdup("");
192: man->meta.msec = mandoc_strdup("");
1.150 schwarze 193: man->meta.date = mandoc_normdate(NULL, NULL);
1.34 kristaps 194: }
1.130 schwarze 195:
196: if (man->meta.os_e &&
197: (man->meta.rcsids & (1 << man->meta.os_e)) == 0)
1.141 schwarze 198: mandoc_msg(MANDOCERR_RCS_MISSING, 0, 0,
1.131 schwarze 199: man->meta.os_e == MANDOC_OS_OPENBSD ?
200: "(OpenBSD)" : "(NetBSD)");
1.75 kristaps 201: }
202:
1.148 schwarze 203: static void
1.138 schwarze 204: check_abort(CHKARGS)
205: {
206: abort();
207: }
208:
1.151 ! schwarze 209: /*
! 210: * Skip leading whitespace, dashes, backslashes, and font escapes,
! 211: * then create a tag if the first following byte is a letter.
! 212: * Priority is high unless whitespace is present.
! 213: */
! 214: static void
! 215: check_tag(struct roff_node *n, struct roff_node *nt)
! 216: {
! 217: const char *cp, *arg;
! 218: int prio, sz;
! 219:
! 220: if (nt == NULL || nt->type != ROFFT_TEXT)
! 221: return;
! 222:
! 223: cp = nt->string;
! 224: prio = TAG_STRONG;
! 225: for (;;) {
! 226: switch (*cp) {
! 227: case ' ':
! 228: case '\t':
! 229: prio = TAG_WEAK;
! 230: /* FALLTHROUGH */
! 231: case '-':
! 232: cp++;
! 233: break;
! 234: case '\\':
! 235: cp++;
! 236: switch (mandoc_escape(&cp, &arg, &sz)) {
! 237: case ESCAPE_FONT:
! 238: case ESCAPE_FONTBOLD:
! 239: case ESCAPE_FONTITALIC:
! 240: case ESCAPE_FONTBI:
! 241: case ESCAPE_FONTROMAN:
! 242: case ESCAPE_FONTCW:
! 243: case ESCAPE_FONTPREV:
! 244: case ESCAPE_IGNORE:
! 245: break;
! 246: case ESCAPE_SPECIAL:
! 247: if (sz != 1)
! 248: return;
! 249: switch (*arg) {
! 250: case '-':
! 251: case 'e':
! 252: break;
! 253: default:
! 254: return;
! 255: }
! 256: break;
! 257: default:
! 258: return;
! 259: }
! 260: break;
! 261: default:
! 262: if (isalpha((unsigned char)*cp))
! 263: tag_put(cp, prio, n);
! 264: return;
! 265: }
! 266: }
! 267: }
! 268:
1.138 schwarze 269: static void
1.75 kristaps 270: check_text(CHKARGS)
271: {
272: char *cp, *p;
273:
1.145 schwarze 274: if (n->flags & NODE_NOFILL)
1.107 schwarze 275: return;
1.76 schwarze 276:
277: cp = n->string;
278: for (p = cp; NULL != (p = strchr(p, '\t')); p++)
1.141 schwarze 279: mandoc_msg(MANDOCERR_FI_TAB,
280: n->line, n->pos + (int)(p - cp), NULL);
1.145 schwarze 281: }
282:
283: static void
284: post_EE(CHKARGS)
285: {
286: if ((n->flags & NODE_NOFILL) == 0)
287: mandoc_msg(MANDOCERR_FI_SKIP, n->line, n->pos, "EE");
288: }
289:
290: static void
291: post_EX(CHKARGS)
292: {
293: if (n->flags & NODE_NOFILL)
294: mandoc_msg(MANDOCERR_NF_SKIP, n->line, n->pos, "EX");
1.1 kristaps 295: }
296:
1.113 schwarze 297: static void
298: post_OP(CHKARGS)
299: {
300:
1.122 schwarze 301: if (n->child == NULL)
1.141 schwarze 302: mandoc_msg(MANDOCERR_OP_EMPTY, n->line, n->pos, "OP");
1.122 schwarze 303: else if (n->child->next != NULL && n->child->next->next != NULL) {
1.113 schwarze 304: n = n->child->next->next;
1.141 schwarze 305: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.113 schwarze 306: n->line, n->pos, "OP ... %s", n->string);
307: }
1.1 kristaps 308: }
309:
1.107 schwarze 310: static void
1.139 schwarze 311: post_SH(CHKARGS)
312: {
313: struct roff_node *nc;
314:
315: if (n->type != ROFFT_BODY || (nc = n->child) == NULL)
316: return;
317:
318: if (nc->tok == MAN_PP && nc->body->child != NULL) {
319: while (nc->body->last != NULL) {
320: man->next = ROFF_NEXT_CHILD;
321: roff_node_relink(man, nc->body->last);
322: man->last = n;
323: }
324: }
325:
326: if (nc->tok == MAN_PP || nc->tok == ROFF_sp || nc->tok == ROFF_br) {
1.141 schwarze 327: mandoc_msg(MANDOCERR_PAR_SKIP, nc->line, nc->pos,
328: "%s after %s", roff_name[nc->tok], roff_name[n->tok]);
1.139 schwarze 329: roff_node_delete(man, nc);
330: }
331:
332: /*
333: * Trailing PP is empty, so it is deleted by check_par().
334: * Trailing sp is significant.
335: */
336:
337: if ((nc = n->last) != NULL && nc->tok == ROFF_br) {
1.141 schwarze 338: mandoc_msg(MANDOCERR_PAR_SKIP,
1.139 schwarze 339: nc->line, nc->pos, "%s at the end of %s",
340: roff_name[nc->tok], roff_name[n->tok]);
341: roff_node_delete(man, nc);
342: }
343: }
344:
345: static void
1.104 schwarze 346: post_UR(CHKARGS)
1.86 schwarze 347: {
1.114 schwarze 348: if (n->type == ROFFT_HEAD && n->child == NULL)
1.141 schwarze 349: mandoc_msg(MANDOCERR_UR_NOHEAD, n->line, n->pos,
350: "%s", roff_name[n->tok]);
1.107 schwarze 351: check_part(man, n);
1.55 kristaps 352: }
1.16 kristaps 353:
1.107 schwarze 354: static void
1.23 kristaps 355: check_part(CHKARGS)
356: {
357:
1.114 schwarze 358: if (n->type == ROFFT_BODY && n->child == NULL)
1.141 schwarze 359: mandoc_msg(MANDOCERR_BLK_EMPTY, n->line, n->pos,
360: "%s", roff_name[n->tok]);
1.23 kristaps 361: }
362:
1.107 schwarze 363: static void
1.17 kristaps 364: check_par(CHKARGS)
365: {
366:
1.59 kristaps 367: switch (n->type) {
1.114 schwarze 368: case ROFFT_BLOCK:
1.122 schwarze 369: if (n->body->child == NULL)
1.118 schwarze 370: roff_node_delete(man, n);
1.59 kristaps 371: break;
1.114 schwarze 372: case ROFFT_BODY:
1.139 schwarze 373: if (n->child != NULL &&
374: (n->child->tok == ROFF_sp || n->child->tok == ROFF_br)) {
1.141 schwarze 375: mandoc_msg(MANDOCERR_PAR_SKIP,
376: n->child->line, n->child->pos,
1.139 schwarze 377: "%s after %s", roff_name[n->child->tok],
378: roff_name[n->tok]);
379: roff_node_delete(man, n->child);
380: }
1.122 schwarze 381: if (n->child == NULL)
1.141 schwarze 382: mandoc_msg(MANDOCERR_PAR_SKIP, n->line, n->pos,
1.123 schwarze 383: "%s empty", roff_name[n->tok]);
1.59 kristaps 384: break;
1.114 schwarze 385: case ROFFT_HEAD:
1.122 schwarze 386: if (n->child != NULL)
1.141 schwarze 387: mandoc_msg(MANDOCERR_ARG_SKIP,
388: n->line, n->pos, "%s %s%s",
1.123 schwarze 389: roff_name[n->tok], n->child->string,
1.122 schwarze 390: n->child->next != NULL ? " ..." : "");
1.59 kristaps 391: break;
392: default:
393: break;
394: }
1.17 kristaps 395: }
396:
1.107 schwarze 397: static void
1.83 schwarze 398: post_IP(CHKARGS)
399: {
400: switch (n->type) {
1.114 schwarze 401: case ROFFT_BLOCK:
1.122 schwarze 402: if (n->head->child == NULL && n->body->child == NULL)
1.118 schwarze 403: roff_node_delete(man, n);
1.83 schwarze 404: break;
1.151 ! schwarze 405: case ROFFT_HEAD:
! 406: check_tag(n, n->child);
! 407: break;
1.114 schwarze 408: case ROFFT_BODY:
1.122 schwarze 409: if (n->parent->head->child == NULL && n->child == NULL)
1.141 schwarze 410: mandoc_msg(MANDOCERR_PAR_SKIP, n->line, n->pos,
1.123 schwarze 411: "%s empty", roff_name[n->tok]);
1.83 schwarze 412: break;
413: default:
414: break;
415: }
1.151 ! schwarze 416: }
! 417:
! 418: /*
! 419: * The first next-line element in the head is the tag.
! 420: * If that's a font macro, use its first child instead.
! 421: */
! 422: static void
! 423: post_TP(CHKARGS)
! 424: {
! 425: struct roff_node *nt;
! 426:
! 427: if (n->type != ROFFT_HEAD || (nt = n->child) == NULL)
! 428: return;
! 429:
! 430: while ((nt->flags & NODE_LINE) == 0)
! 431: if ((nt = nt->next) == NULL)
! 432: return;
! 433:
! 434: switch (nt->tok) {
! 435: case MAN_B:
! 436: case MAN_BI:
! 437: case MAN_BR:
! 438: case MAN_I:
! 439: case MAN_IB:
! 440: case MAN_IR:
! 441: nt = nt->child;
! 442: break;
! 443: default:
! 444: break;
! 445: }
! 446: check_tag(n, nt);
1.83 schwarze 447: }
1.17 kristaps 448:
1.107 schwarze 449: static void
1.51 kristaps 450: post_TH(CHKARGS)
451: {
1.115 schwarze 452: struct roff_node *nb;
1.60 schwarze 453: const char *p;
1.51 kristaps 454:
1.85 schwarze 455: free(man->meta.title);
456: free(man->meta.vol);
1.116 schwarze 457: free(man->meta.os);
1.85 schwarze 458: free(man->meta.msec);
459: free(man->meta.date);
1.51 kristaps 460:
1.85 schwarze 461: man->meta.title = man->meta.vol = man->meta.date =
1.116 schwarze 462: man->meta.msec = man->meta.os = NULL;
1.51 kristaps 463:
1.92 schwarze 464: nb = n;
465:
1.116 schwarze 466: /* ->TITLE<- MSEC DATE OS VOL */
1.51 kristaps 467:
468: n = n->child;
1.149 schwarze 469: if (n != NULL && n->string != NULL) {
470: for (p = n->string; *p != '\0'; p++) {
1.60 schwarze 471: /* Only warn about this once... */
1.91 schwarze 472: if (isalpha((unsigned char)*p) &&
473: ! isupper((unsigned char)*p)) {
1.141 schwarze 474: mandoc_msg(MANDOCERR_TITLE_CASE, n->line,
475: n->pos + (int)(p - n->string),
1.102 schwarze 476: "TH %s", n->string);
1.60 schwarze 477: break;
478: }
479: }
1.85 schwarze 480: man->meta.title = mandoc_strdup(n->string);
1.105 schwarze 481: } else {
1.85 schwarze 482: man->meta.title = mandoc_strdup("");
1.141 schwarze 483: mandoc_msg(MANDOCERR_TH_NOTITLE, nb->line, nb->pos, "TH");
1.105 schwarze 484: }
1.51 kristaps 485:
1.116 schwarze 486: /* TITLE ->MSEC<- DATE OS VOL */
1.51 kristaps 487:
1.149 schwarze 488: if (n != NULL)
1.60 schwarze 489: n = n->next;
1.149 schwarze 490: if (n != NULL && n->string != NULL)
1.85 schwarze 491: man->meta.msec = mandoc_strdup(n->string);
1.105 schwarze 492: else {
1.85 schwarze 493: man->meta.msec = mandoc_strdup("");
1.141 schwarze 494: mandoc_msg(MANDOCERR_MSEC_MISSING,
1.105 schwarze 495: nb->line, nb->pos, "TH %s", man->meta.title);
496: }
1.51 kristaps 497:
1.116 schwarze 498: /* TITLE MSEC ->DATE<- OS VOL */
1.51 kristaps 499:
1.149 schwarze 500: if (n != NULL)
1.60 schwarze 501: n = n->next;
1.150 schwarze 502: if (man->quick && n != NULL)
1.85 schwarze 503: man->meta.date = mandoc_strdup("");
1.150 schwarze 504: else
505: man->meta.date = mandoc_normdate(n, nb);
1.51 kristaps 506:
1.116 schwarze 507: /* TITLE MSEC DATE ->OS<- VOL */
1.51 kristaps 508:
509: if (n && (n = n->next))
1.116 schwarze 510: man->meta.os = mandoc_strdup(n->string);
1.131 schwarze 511: else if (man->os_s != NULL)
512: man->meta.os = mandoc_strdup(man->os_s);
513: if (man->meta.os_e == MANDOC_OS_OTHER && man->meta.os != NULL) {
514: if (strstr(man->meta.os, "OpenBSD") != NULL)
515: man->meta.os_e = MANDOC_OS_OPENBSD;
516: else if (strstr(man->meta.os, "NetBSD") != NULL)
517: man->meta.os_e = MANDOC_OS_NETBSD;
518: }
1.51 kristaps 519:
1.116 schwarze 520: /* TITLE MSEC DATE OS ->VOL<- */
1.79 schwarze 521: /* If missing, use the default VOL name for MSEC. */
1.51 kristaps 522:
523: if (n && (n = n->next))
1.85 schwarze 524: man->meta.vol = mandoc_strdup(n->string);
525: else if ('\0' != man->meta.msec[0] &&
526: (NULL != (p = mandoc_a2msec(man->meta.msec))))
527: man->meta.vol = mandoc_strdup(p);
1.113 schwarze 528:
529: if (n != NULL && (n = n->next) != NULL)
1.141 schwarze 530: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.113 schwarze 531: n->line, n->pos, "TH ... %s", n->string);
1.51 kristaps 532:
533: /*
534: * Remove the `TH' node after we've processed it for our
535: * meta-data.
536: */
1.118 schwarze 537: roff_node_delete(man, man->last);
1.51 kristaps 538: }
539:
1.107 schwarze 540: static void
1.51 kristaps 541: post_UC(CHKARGS)
542: {
543: static const char * const bsd_versions[] = {
544: "3rd Berkeley Distribution",
545: "4th Berkeley Distribution",
546: "4.2 Berkeley Distribution",
547: "4.3 Berkeley Distribution",
548: "4.4 Berkeley Distribution",
549: };
550:
551: const char *p, *s;
552:
553: n = n->child;
554:
1.114 schwarze 555: if (n == NULL || n->type != ROFFT_TEXT)
1.51 kristaps 556: p = bsd_versions[0];
557: else {
558: s = n->string;
559: if (0 == strcmp(s, "3"))
560: p = bsd_versions[0];
561: else if (0 == strcmp(s, "4"))
562: p = bsd_versions[1];
563: else if (0 == strcmp(s, "5"))
564: p = bsd_versions[2];
565: else if (0 == strcmp(s, "6"))
566: p = bsd_versions[3];
567: else if (0 == strcmp(s, "7"))
568: p = bsd_versions[4];
569: else
570: p = bsd_versions[0];
571: }
572:
1.116 schwarze 573: free(man->meta.os);
574: man->meta.os = mandoc_strdup(p);
1.51 kristaps 575: }
576:
1.107 schwarze 577: static void
1.51 kristaps 578: post_AT(CHKARGS)
579: {
580: static const char * const unix_versions[] = {
581: "7th Edition",
582: "System III",
583: "System V",
584: "System V Release 2",
585: };
586:
1.115 schwarze 587: struct roff_node *nn;
1.51 kristaps 588: const char *p, *s;
589:
590: n = n->child;
591:
1.114 schwarze 592: if (n == NULL || n->type != ROFFT_TEXT)
1.51 kristaps 593: p = unix_versions[0];
594: else {
595: s = n->string;
596: if (0 == strcmp(s, "3"))
597: p = unix_versions[0];
598: else if (0 == strcmp(s, "4"))
599: p = unix_versions[1];
600: else if (0 == strcmp(s, "5")) {
601: nn = n->next;
1.114 schwarze 602: if (nn != NULL &&
603: nn->type == ROFFT_TEXT &&
604: nn->string[0] != '\0')
1.51 kristaps 605: p = unix_versions[3];
606: else
607: p = unix_versions[2];
608: } else
609: p = unix_versions[0];
610: }
611:
1.116 schwarze 612: free(man->meta.os);
613: man->meta.os = mandoc_strdup(p);
1.129 schwarze 614: }
615:
616: static void
617: post_in(CHKARGS)
618: {
619: char *s;
620:
621: if (n->parent->tok != MAN_TP ||
622: n->parent->type != ROFFT_HEAD ||
623: n->child == NULL ||
624: *n->child->string == '+' ||
625: *n->child->string == '-')
626: return;
627: mandoc_asprintf(&s, "+%s", n->child->string);
628: free(n->child->string);
629: n->child->string = s;
1.51 kristaps 630: }
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