Annotation of mandoc/man_validate.c, Revision 1.160
1.160 ! schwarze 1: /* $Id: man_validate.c,v 1.159 2023/10/24 20:53:12 schwarze Exp $ */
1.1 kristaps 2: /*
1.160 ! schwarze 3: * Copyright (c) 2010-2020, 2023, 2025 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"
1.159 schwarze 36: #include "mandoc_xr.h"
1.114 schwarze 37: #include "roff.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"
1.153 schwarze 42: #include "tag.h"
1.1 kristaps 43:
1.117 schwarze 44: #define CHKARGS struct roff_man *man, struct roff_node *n
1.1 kristaps 45:
1.107 schwarze 46: typedef void (*v_check)(CHKARGS);
1.1 kristaps 47:
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);
1.159 schwarze 58: static void post_MR(CHKARGS);
1.113 schwarze 59: static void post_OP(CHKARGS);
1.139 schwarze 60: static void post_SH(CHKARGS);
1.107 schwarze 61: static void post_TH(CHKARGS);
1.151 schwarze 62: static void post_TP(CHKARGS);
1.107 schwarze 63: static void post_UC(CHKARGS);
64: static void post_UR(CHKARGS);
1.129 schwarze 65: static void post_in(CHKARGS);
1.51 kristaps 66:
1.135 schwarze 67: static const v_check man_valids[MAN_MAX - MAN_TH] = {
1.104 schwarze 68: post_TH, /* TH */
1.139 schwarze 69: post_SH, /* SH */
70: post_SH, /* SS */
1.151 schwarze 71: post_TP, /* TP */
72: post_TP, /* TQ */
1.158 schwarze 73: check_par, /* LP */
1.104 schwarze 74: check_par, /* PP */
1.158 schwarze 75: check_par, /* P */
1.104 schwarze 76: post_IP, /* IP */
77: NULL, /* HP */
78: NULL, /* SM */
79: NULL, /* SB */
80: NULL, /* BI */
81: NULL, /* IB */
82: NULL, /* BR */
83: NULL, /* RB */
84: NULL, /* R */
85: NULL, /* B */
86: NULL, /* I */
87: NULL, /* IR */
88: NULL, /* RI */
89: NULL, /* RE */
90: check_part, /* RS */
91: NULL, /* DT */
92: post_UC, /* UC */
1.112 schwarze 93: NULL, /* PD */
1.104 schwarze 94: post_AT, /* AT */
1.129 schwarze 95: post_in, /* in */
1.137 schwarze 96: NULL, /* SY */
97: NULL, /* YS */
1.113 schwarze 98: post_OP, /* OP */
1.145 schwarze 99: post_EX, /* EX */
100: post_EE, /* EE */
1.104 schwarze 101: post_UR, /* UR */
102: NULL, /* UE */
1.132 schwarze 103: post_UR, /* MT */
104: NULL, /* ME */
1.159 schwarze 105: post_MR, /* MR */
1.1 kristaps 106: };
107:
108:
1.138 schwarze 109: /* Validate the subtree rooted at man->last. */
1.107 schwarze 110: void
1.143 schwarze 111: man_validate(struct roff_man *man)
1.1 kristaps 112: {
1.115 schwarze 113: struct roff_node *n;
1.123 schwarze 114: const v_check *cp;
1.1 kristaps 115:
1.138 schwarze 116: /*
117: * Iterate over all children, recursing into each one
118: * in turn, depth-first.
119: */
120:
1.158 schwarze 121: n = man->last;
1.121 schwarze 122: man->last = man->last->child;
123: while (man->last != NULL) {
1.143 schwarze 124: man_validate(man);
1.121 schwarze 125: if (man->last == n)
126: man->last = man->last->child;
127: else
128: man->last = man->last->next;
129: }
1.1 kristaps 130:
1.138 schwarze 131: /* Finally validate the macro itself. */
132:
1.121 schwarze 133: man->last = n;
134: man->next = ROFF_NEXT_SIBLING;
1.104 schwarze 135: switch (n->type) {
1.114 schwarze 136: case ROFFT_TEXT:
1.107 schwarze 137: check_text(man, n);
138: break;
1.114 schwarze 139: case ROFFT_ROOT:
1.107 schwarze 140: check_root(man, n);
141: break;
1.134 schwarze 142: case ROFFT_COMMENT:
1.114 schwarze 143: case ROFFT_EQN:
144: case ROFFT_TBL:
1.107 schwarze 145: break;
1.1 kristaps 146: default:
1.124 schwarze 147: if (n->tok < ROFF_MAX) {
1.139 schwarze 148: roff_validate(man);
1.124 schwarze 149: break;
150: }
151: assert(n->tok >= MAN_TH && n->tok < MAN_MAX);
1.135 schwarze 152: cp = man_valids + (n->tok - MAN_TH);
1.107 schwarze 153: if (*cp)
154: (*cp)(man, n);
1.121 schwarze 155: if (man->last == n)
1.146 schwarze 156: n->flags |= NODE_VALID;
1.107 schwarze 157: break;
1.1 kristaps 158: }
159: }
160:
1.107 schwarze 161: static void
1.91 schwarze 162: check_root(CHKARGS)
1.14 kristaps 163: {
1.101 schwarze 164: assert((man->flags & (MAN_BLINE | MAN_ELINE)) == 0);
1.17 kristaps 165:
1.134 schwarze 166: if (n->last == NULL || n->last->type == ROFFT_COMMENT)
1.141 schwarze 167: mandoc_msg(MANDOCERR_DOC_EMPTY, n->line, n->pos, NULL);
1.93 schwarze 168: else
169: man->meta.hasbody = 1;
170:
171: if (NULL == man->meta.title) {
1.141 schwarze 172: mandoc_msg(MANDOCERR_TH_NOTITLE, n->line, n->pos, NULL);
1.54 kristaps 173:
1.34 kristaps 174: /*
175: * If a title hasn't been set, do so now (by
176: * implication, date and section also aren't set).
177: */
1.54 kristaps 178:
1.105 schwarze 179: man->meta.title = mandoc_strdup("");
180: man->meta.msec = mandoc_strdup("");
1.150 schwarze 181: man->meta.date = mandoc_normdate(NULL, NULL);
1.34 kristaps 182: }
1.130 schwarze 183:
184: if (man->meta.os_e &&
185: (man->meta.rcsids & (1 << man->meta.os_e)) == 0)
1.141 schwarze 186: mandoc_msg(MANDOCERR_RCS_MISSING, 0, 0,
1.131 schwarze 187: man->meta.os_e == MANDOC_OS_OPENBSD ?
188: "(OpenBSD)" : "(NetBSD)");
1.75 kristaps 189: }
190:
1.151 schwarze 191: /*
192: * Skip leading whitespace, dashes, backslashes, and font escapes,
193: * then create a tag if the first following byte is a letter.
194: * Priority is high unless whitespace is present.
195: */
196: static void
197: check_tag(struct roff_node *n, struct roff_node *nt)
198: {
199: const char *cp, *arg;
200: int prio, sz;
201:
202: if (nt == NULL || nt->type != ROFFT_TEXT)
203: return;
204:
205: cp = nt->string;
206: prio = TAG_STRONG;
207: for (;;) {
208: switch (*cp) {
209: case ' ':
210: case '\t':
211: prio = TAG_WEAK;
212: /* FALLTHROUGH */
213: case '-':
214: cp++;
215: break;
216: case '\\':
217: cp++;
218: switch (mandoc_escape(&cp, &arg, &sz)) {
219: case ESCAPE_FONT:
220: case ESCAPE_FONTBOLD:
221: case ESCAPE_FONTITALIC:
222: case ESCAPE_FONTBI:
223: case ESCAPE_FONTROMAN:
1.156 schwarze 224: case ESCAPE_FONTCR:
225: case ESCAPE_FONTCB:
226: case ESCAPE_FONTCI:
1.151 schwarze 227: case ESCAPE_FONTPREV:
228: case ESCAPE_IGNORE:
229: break;
230: case ESCAPE_SPECIAL:
231: if (sz != 1)
232: return;
233: switch (*arg) {
234: case '-':
235: case 'e':
236: break;
237: default:
238: return;
239: }
240: break;
241: default:
242: return;
243: }
244: break;
245: default:
246: if (isalpha((unsigned char)*cp))
247: tag_put(cp, prio, n);
248: return;
249: }
250: }
251: }
252:
1.138 schwarze 253: static void
1.75 kristaps 254: check_text(CHKARGS)
255: {
256: char *cp, *p;
257:
1.145 schwarze 258: if (n->flags & NODE_NOFILL)
1.107 schwarze 259: return;
1.76 schwarze 260:
261: cp = n->string;
262: for (p = cp; NULL != (p = strchr(p, '\t')); p++)
1.141 schwarze 263: mandoc_msg(MANDOCERR_FI_TAB,
264: n->line, n->pos + (int)(p - cp), NULL);
1.145 schwarze 265: }
266:
267: static void
268: post_EE(CHKARGS)
269: {
270: if ((n->flags & NODE_NOFILL) == 0)
271: mandoc_msg(MANDOCERR_FI_SKIP, n->line, n->pos, "EE");
272: }
273:
274: static void
275: post_EX(CHKARGS)
276: {
277: if (n->flags & NODE_NOFILL)
278: mandoc_msg(MANDOCERR_NF_SKIP, n->line, n->pos, "EX");
1.1 kristaps 279: }
280:
1.113 schwarze 281: static void
282: post_OP(CHKARGS)
283: {
284:
1.122 schwarze 285: if (n->child == NULL)
1.141 schwarze 286: mandoc_msg(MANDOCERR_OP_EMPTY, n->line, n->pos, "OP");
1.122 schwarze 287: else if (n->child->next != NULL && n->child->next->next != NULL) {
1.113 schwarze 288: n = n->child->next->next;
1.141 schwarze 289: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.113 schwarze 290: n->line, n->pos, "OP ... %s", n->string);
291: }
1.1 kristaps 292: }
293:
1.107 schwarze 294: static void
1.139 schwarze 295: post_SH(CHKARGS)
296: {
297: struct roff_node *nc;
1.152 schwarze 298: char *cp, *tag;
1.139 schwarze 299:
1.152 schwarze 300: nc = n->child;
301: switch (n->type) {
1.160 ! schwarze 302: case ROFFT_BLOCK:
! 303: if ((nc = n->prev) != NULL && nc->tok == ROFF_br) {
! 304: mandoc_msg(MANDOCERR_PAR_SKIP, nc->line, nc->pos,
! 305: "%s before first %s", roff_name[nc->tok],
! 306: roff_name[n->tok]);
! 307: roff_node_delete(man, nc);
! 308: }
! 309: return;
1.152 schwarze 310: case ROFFT_HEAD:
311: tag = NULL;
312: deroff(&tag, n);
313: if (tag != NULL) {
314: for (cp = tag; *cp != '\0'; cp++)
315: if (*cp == ' ')
316: *cp = '_';
317: if (nc != NULL && nc->type == ROFFT_TEXT &&
318: strcmp(nc->string, tag) == 0)
1.155 schwarze 319: tag_put(NULL, TAG_STRONG, n);
1.152 schwarze 320: else
321: tag_put(tag, TAG_FALLBACK, n);
322: free(tag);
323: }
324: return;
325: case ROFFT_BODY:
326: if (nc != NULL)
327: break;
1.139 schwarze 328: return;
1.152 schwarze 329: default:
330: return;
331: }
1.139 schwarze 332:
1.158 schwarze 333: if ((nc->tok == MAN_LP || nc->tok == MAN_PP || nc->tok == MAN_P) &&
334: nc->body->child != NULL) {
1.139 schwarze 335: while (nc->body->last != NULL) {
336: man->next = ROFF_NEXT_CHILD;
337: roff_node_relink(man, nc->body->last);
338: man->last = n;
339: }
340: }
341:
1.158 schwarze 342: if (nc->tok == MAN_LP || nc->tok == MAN_PP || nc->tok == MAN_P ||
343: nc->tok == ROFF_sp || nc->tok == ROFF_br) {
1.141 schwarze 344: mandoc_msg(MANDOCERR_PAR_SKIP, nc->line, nc->pos,
345: "%s after %s", roff_name[nc->tok], roff_name[n->tok]);
1.139 schwarze 346: roff_node_delete(man, nc);
347: }
348:
349: /*
350: * Trailing PP is empty, so it is deleted by check_par().
351: * Trailing sp is significant.
352: */
353:
354: if ((nc = n->last) != NULL && nc->tok == ROFF_br) {
1.141 schwarze 355: mandoc_msg(MANDOCERR_PAR_SKIP,
1.139 schwarze 356: nc->line, nc->pos, "%s at the end of %s",
357: roff_name[nc->tok], roff_name[n->tok]);
358: roff_node_delete(man, nc);
359: }
360: }
361:
362: static void
1.104 schwarze 363: post_UR(CHKARGS)
1.86 schwarze 364: {
1.114 schwarze 365: if (n->type == ROFFT_HEAD && n->child == NULL)
1.141 schwarze 366: mandoc_msg(MANDOCERR_UR_NOHEAD, n->line, n->pos,
367: "%s", roff_name[n->tok]);
1.55 kristaps 368: }
1.16 kristaps 369:
1.107 schwarze 370: static void
1.23 kristaps 371: check_part(CHKARGS)
372: {
1.114 schwarze 373: if (n->type == ROFFT_BODY && n->child == NULL)
1.141 schwarze 374: mandoc_msg(MANDOCERR_BLK_EMPTY, n->line, n->pos,
375: "%s", roff_name[n->tok]);
1.23 kristaps 376: }
377:
1.107 schwarze 378: static void
1.17 kristaps 379: check_par(CHKARGS)
380: {
381:
1.59 kristaps 382: switch (n->type) {
1.114 schwarze 383: case ROFFT_BLOCK:
1.122 schwarze 384: if (n->body->child == NULL)
1.118 schwarze 385: roff_node_delete(man, n);
1.59 kristaps 386: break;
1.114 schwarze 387: case ROFFT_BODY:
1.139 schwarze 388: if (n->child != NULL &&
389: (n->child->tok == ROFF_sp || n->child->tok == ROFF_br)) {
1.141 schwarze 390: mandoc_msg(MANDOCERR_PAR_SKIP,
391: n->child->line, n->child->pos,
1.139 schwarze 392: "%s after %s", roff_name[n->child->tok],
393: roff_name[n->tok]);
394: roff_node_delete(man, n->child);
395: }
1.122 schwarze 396: if (n->child == NULL)
1.141 schwarze 397: mandoc_msg(MANDOCERR_PAR_SKIP, n->line, n->pos,
1.123 schwarze 398: "%s empty", roff_name[n->tok]);
1.59 kristaps 399: break;
1.114 schwarze 400: case ROFFT_HEAD:
1.122 schwarze 401: if (n->child != NULL)
1.141 schwarze 402: mandoc_msg(MANDOCERR_ARG_SKIP,
403: n->line, n->pos, "%s %s%s",
1.123 schwarze 404: roff_name[n->tok], n->child->string,
1.122 schwarze 405: n->child->next != NULL ? " ..." : "");
1.59 kristaps 406: break;
407: default:
408: break;
409: }
1.17 kristaps 410: }
411:
1.107 schwarze 412: static void
1.83 schwarze 413: post_IP(CHKARGS)
414: {
415: switch (n->type) {
1.114 schwarze 416: case ROFFT_BLOCK:
1.122 schwarze 417: if (n->head->child == NULL && n->body->child == NULL)
1.118 schwarze 418: roff_node_delete(man, n);
1.83 schwarze 419: break;
1.151 schwarze 420: case ROFFT_HEAD:
421: check_tag(n, n->child);
422: break;
1.114 schwarze 423: case ROFFT_BODY:
1.122 schwarze 424: if (n->parent->head->child == NULL && n->child == NULL)
1.141 schwarze 425: mandoc_msg(MANDOCERR_PAR_SKIP, n->line, n->pos,
1.123 schwarze 426: "%s empty", roff_name[n->tok]);
1.83 schwarze 427: break;
428: default:
429: break;
430: }
1.151 schwarze 431: }
432:
433: /*
434: * The first next-line element in the head is the tag.
435: * If that's a font macro, use its first child instead.
436: */
437: static void
438: post_TP(CHKARGS)
439: {
440: struct roff_node *nt;
441:
442: if (n->type != ROFFT_HEAD || (nt = n->child) == NULL)
443: return;
444:
445: while ((nt->flags & NODE_LINE) == 0)
446: if ((nt = nt->next) == NULL)
447: return;
448:
449: switch (nt->tok) {
450: case MAN_B:
451: case MAN_BI:
452: case MAN_BR:
453: case MAN_I:
454: case MAN_IB:
455: case MAN_IR:
456: nt = nt->child;
457: break;
458: default:
459: break;
460: }
461: check_tag(n, nt);
1.83 schwarze 462: }
1.17 kristaps 463:
1.107 schwarze 464: static void
1.51 kristaps 465: post_TH(CHKARGS)
466: {
1.115 schwarze 467: struct roff_node *nb;
1.60 schwarze 468: const char *p;
1.51 kristaps 469:
1.85 schwarze 470: free(man->meta.title);
471: free(man->meta.vol);
1.116 schwarze 472: free(man->meta.os);
1.85 schwarze 473: free(man->meta.msec);
474: free(man->meta.date);
1.51 kristaps 475:
1.85 schwarze 476: man->meta.title = man->meta.vol = man->meta.date =
1.116 schwarze 477: man->meta.msec = man->meta.os = NULL;
1.51 kristaps 478:
1.92 schwarze 479: nb = n;
480:
1.116 schwarze 481: /* ->TITLE<- MSEC DATE OS VOL */
1.51 kristaps 482:
483: n = n->child;
1.149 schwarze 484: if (n != NULL && n->string != NULL) {
485: for (p = n->string; *p != '\0'; p++) {
1.60 schwarze 486: /* Only warn about this once... */
1.91 schwarze 487: if (isalpha((unsigned char)*p) &&
488: ! isupper((unsigned char)*p)) {
1.141 schwarze 489: mandoc_msg(MANDOCERR_TITLE_CASE, n->line,
490: n->pos + (int)(p - n->string),
1.102 schwarze 491: "TH %s", n->string);
1.60 schwarze 492: break;
493: }
494: }
1.85 schwarze 495: man->meta.title = mandoc_strdup(n->string);
1.105 schwarze 496: } else {
1.85 schwarze 497: man->meta.title = mandoc_strdup("");
1.141 schwarze 498: mandoc_msg(MANDOCERR_TH_NOTITLE, nb->line, nb->pos, "TH");
1.105 schwarze 499: }
1.51 kristaps 500:
1.116 schwarze 501: /* TITLE ->MSEC<- DATE OS VOL */
1.51 kristaps 502:
1.149 schwarze 503: if (n != NULL)
1.60 schwarze 504: n = n->next;
1.154 schwarze 505: if (n != NULL && n->string != NULL) {
1.85 schwarze 506: man->meta.msec = mandoc_strdup(n->string);
1.154 schwarze 507: if (man->filesec != '\0' &&
508: man->filesec != *n->string &&
509: *n->string >= '1' && *n->string <= '9')
510: mandoc_msg(MANDOCERR_MSEC_FILE, n->line, n->pos,
511: "*.%c vs TH ... %c", man->filesec, *n->string);
512: } else {
1.85 schwarze 513: man->meta.msec = mandoc_strdup("");
1.141 schwarze 514: mandoc_msg(MANDOCERR_MSEC_MISSING,
1.105 schwarze 515: nb->line, nb->pos, "TH %s", man->meta.title);
516: }
1.51 kristaps 517:
1.116 schwarze 518: /* TITLE MSEC ->DATE<- OS VOL */
1.51 kristaps 519:
1.149 schwarze 520: if (n != NULL)
1.60 schwarze 521: n = n->next;
1.150 schwarze 522: if (man->quick && n != NULL)
1.85 schwarze 523: man->meta.date = mandoc_strdup("");
1.150 schwarze 524: else
525: man->meta.date = mandoc_normdate(n, nb);
1.51 kristaps 526:
1.116 schwarze 527: /* TITLE MSEC DATE ->OS<- VOL */
1.51 kristaps 528:
529: if (n && (n = n->next))
1.116 schwarze 530: man->meta.os = mandoc_strdup(n->string);
1.131 schwarze 531: else if (man->os_s != NULL)
532: man->meta.os = mandoc_strdup(man->os_s);
533: if (man->meta.os_e == MANDOC_OS_OTHER && man->meta.os != NULL) {
534: if (strstr(man->meta.os, "OpenBSD") != NULL)
535: man->meta.os_e = MANDOC_OS_OPENBSD;
536: else if (strstr(man->meta.os, "NetBSD") != NULL)
537: man->meta.os_e = MANDOC_OS_NETBSD;
538: }
1.51 kristaps 539:
1.116 schwarze 540: /* TITLE MSEC DATE OS ->VOL<- */
1.79 schwarze 541: /* If missing, use the default VOL name for MSEC. */
1.51 kristaps 542:
543: if (n && (n = n->next))
1.85 schwarze 544: man->meta.vol = mandoc_strdup(n->string);
545: else if ('\0' != man->meta.msec[0] &&
546: (NULL != (p = mandoc_a2msec(man->meta.msec))))
547: man->meta.vol = mandoc_strdup(p);
1.113 schwarze 548:
549: if (n != NULL && (n = n->next) != NULL)
1.141 schwarze 550: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.113 schwarze 551: n->line, n->pos, "TH ... %s", n->string);
1.51 kristaps 552:
553: /*
554: * Remove the `TH' node after we've processed it for our
555: * meta-data.
556: */
1.118 schwarze 557: roff_node_delete(man, man->last);
1.159 schwarze 558: }
559:
560: static void
561: post_MR(CHKARGS)
562: {
563: struct roff_node *nch;
564:
565: if ((nch = n->child) == NULL) {
566: mandoc_msg(MANDOCERR_NM_NONAME, n->line, n->pos, "MR");
567: return;
568: }
569: if (nch->next == NULL) {
570: mandoc_msg(MANDOCERR_XR_NOSEC,
571: n->line, n->pos, "MR %s", nch->string);
572: return;
573: }
574: if (mandoc_xr_add(nch->next->string, nch->string, nch->line, nch->pos))
575: mandoc_msg(MANDOCERR_XR_SELF, nch->line, nch->pos,
576: "MR %s %s", nch->string, nch->next->string);
577: if ((nch = nch->next->next) == NULL || nch->next == NULL)
578: return;
579:
580: mandoc_msg(MANDOCERR_ARG_EXCESS, nch->next->line, nch->next->pos,
581: "MR ... %s", nch->next->string);
582: while (nch->next != NULL)
583: roff_node_delete(man, nch->next);
1.51 kristaps 584: }
585:
1.107 schwarze 586: static void
1.51 kristaps 587: post_UC(CHKARGS)
588: {
589: static const char * const bsd_versions[] = {
590: "3rd Berkeley Distribution",
591: "4th Berkeley Distribution",
592: "4.2 Berkeley Distribution",
593: "4.3 Berkeley Distribution",
594: "4.4 Berkeley Distribution",
595: };
596:
597: const char *p, *s;
598:
599: n = n->child;
600:
1.114 schwarze 601: if (n == NULL || n->type != ROFFT_TEXT)
1.51 kristaps 602: p = bsd_versions[0];
603: else {
604: s = n->string;
605: if (0 == strcmp(s, "3"))
606: p = bsd_versions[0];
607: else if (0 == strcmp(s, "4"))
608: p = bsd_versions[1];
609: else if (0 == strcmp(s, "5"))
610: p = bsd_versions[2];
611: else if (0 == strcmp(s, "6"))
612: p = bsd_versions[3];
613: else if (0 == strcmp(s, "7"))
614: p = bsd_versions[4];
615: else
616: p = bsd_versions[0];
617: }
618:
1.116 schwarze 619: free(man->meta.os);
620: man->meta.os = mandoc_strdup(p);
1.51 kristaps 621: }
622:
1.107 schwarze 623: static void
1.51 kristaps 624: post_AT(CHKARGS)
625: {
626: static const char * const unix_versions[] = {
627: "7th Edition",
628: "System III",
629: "System V",
630: "System V Release 2",
631: };
632:
1.115 schwarze 633: struct roff_node *nn;
1.51 kristaps 634: const char *p, *s;
635:
636: n = n->child;
637:
1.114 schwarze 638: if (n == NULL || n->type != ROFFT_TEXT)
1.51 kristaps 639: p = unix_versions[0];
640: else {
641: s = n->string;
642: if (0 == strcmp(s, "3"))
643: p = unix_versions[0];
644: else if (0 == strcmp(s, "4"))
645: p = unix_versions[1];
646: else if (0 == strcmp(s, "5")) {
647: nn = n->next;
1.114 schwarze 648: if (nn != NULL &&
649: nn->type == ROFFT_TEXT &&
650: nn->string[0] != '\0')
1.51 kristaps 651: p = unix_versions[3];
652: else
653: p = unix_versions[2];
654: } else
655: p = unix_versions[0];
656: }
657:
1.116 schwarze 658: free(man->meta.os);
659: man->meta.os = mandoc_strdup(p);
1.129 schwarze 660: }
661:
662: static void
663: post_in(CHKARGS)
664: {
665: char *s;
666:
667: if (n->parent->tok != MAN_TP ||
668: n->parent->type != ROFFT_HEAD ||
669: n->child == NULL ||
670: *n->child->string == '+' ||
671: *n->child->string == '-')
672: return;
673: mandoc_asprintf(&s, "+%s", n->child->string);
674: free(n->child->string);
675: n->child->string = s;
1.51 kristaps 676: }
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