Annotation of mandoc/man_macro.c, Revision 1.121
1.121 ! schwarze 1: /* $Id: man_macro.c,v 1.120 2017/05/05 15:17:32 schwarze Exp $ */
1.1 kristaps 2: /*
1.65 schwarze 3: * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.116 schwarze 4: * Copyright (c) 2012-2015, 2017 Ingo Schwarze <schwarze@openbsd.org>
1.79 schwarze 5: * Copyright (c) 2013 Franco Fichtner <franco@lastsummer.de>
1.1 kristaps 6: *
7: * Permission to use, copy, modify, and distribute this software for any
1.14 kristaps 8: * purpose with or without fee is hereby granted, provided that the above
9: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 10: *
1.101 schwarze 11: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.14 kristaps 12: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.101 schwarze 13: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.14 kristaps 14: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 18: */
1.30 kristaps 19: #include "config.h"
1.88 schwarze 20:
21: #include <sys/types.h>
1.30 kristaps 22:
1.1 kristaps 23: #include <assert.h>
24: #include <ctype.h>
25: #include <stdlib.h>
26: #include <string.h>
27:
1.101 schwarze 28: #include "mandoc.h"
29: #include "roff.h"
1.58 kristaps 30: #include "man.h"
1.57 kristaps 31: #include "libmandoc.h"
1.106 schwarze 32: #include "roff_int.h"
1.1 kristaps 33: #include "libman.h"
34:
1.91 schwarze 35: static void blk_close(MACRO_PROT_ARGS);
36: static void blk_exp(MACRO_PROT_ARGS);
37: static void blk_imp(MACRO_PROT_ARGS);
38: static void in_line_eoln(MACRO_PROT_ARGS);
1.105 schwarze 39: static int man_args(struct roff_man *, int,
1.60 kristaps 40: int *, char *, char **);
1.116 schwarze 41: static void rew_scope(struct roff_man *, enum roff_tok);
1.19 kristaps 42:
1.116 schwarze 43: const struct man_macro __man_macros[MAN_MAX - MAN_TH] = {
1.66 schwarze 44: { in_line_eoln, MAN_BSCOPE }, /* TH */
45: { blk_imp, MAN_BSCOPE | MAN_SCOPED }, /* SH */
46: { blk_imp, MAN_BSCOPE | MAN_SCOPED }, /* SS */
1.99 schwarze 47: { blk_imp, MAN_BSCOPE | MAN_SCOPED }, /* TP */
1.66 schwarze 48: { blk_imp, MAN_BSCOPE }, /* LP */
49: { blk_imp, MAN_BSCOPE }, /* PP */
50: { blk_imp, MAN_BSCOPE }, /* P */
51: { blk_imp, MAN_BSCOPE }, /* IP */
52: { blk_imp, MAN_BSCOPE }, /* HP */
1.90 schwarze 53: { in_line_eoln, MAN_SCOPED | MAN_JOIN }, /* SM */
54: { in_line_eoln, MAN_SCOPED | MAN_JOIN }, /* SB */
1.19 kristaps 55: { in_line_eoln, 0 }, /* BI */
56: { in_line_eoln, 0 }, /* IB */
57: { in_line_eoln, 0 }, /* BR */
58: { in_line_eoln, 0 }, /* RB */
1.90 schwarze 59: { in_line_eoln, MAN_SCOPED | MAN_JOIN }, /* R */
60: { in_line_eoln, MAN_SCOPED | MAN_JOIN }, /* B */
61: { in_line_eoln, MAN_SCOPED | MAN_JOIN }, /* I */
1.19 kristaps 62: { in_line_eoln, 0 }, /* IR */
63: { in_line_eoln, 0 }, /* RI */
1.110 schwarze 64: { in_line_eoln, MAN_NSCOPED }, /* nf */
65: { in_line_eoln, MAN_NSCOPED }, /* fi */
1.92 schwarze 66: { blk_close, MAN_BSCOPE }, /* RE */
1.99 schwarze 67: { blk_exp, MAN_BSCOPE }, /* RS */
1.23 kristaps 68: { in_line_eoln, 0 }, /* DT */
1.28 kristaps 69: { in_line_eoln, 0 }, /* UC */
1.100 schwarze 70: { in_line_eoln, MAN_NSCOPED }, /* PD */
1.45 joerg 71: { in_line_eoln, 0 }, /* AT */
1.49 kristaps 72: { in_line_eoln, 0 }, /* in */
1.71 kristaps 73: { in_line_eoln, 0 }, /* OP */
1.72 schwarze 74: { in_line_eoln, MAN_BSCOPE }, /* EX */
75: { in_line_eoln, MAN_BSCOPE }, /* EE */
1.99 schwarze 76: { blk_exp, MAN_BSCOPE }, /* UR */
1.92 schwarze 77: { blk_close, MAN_BSCOPE }, /* UE */
1.19 kristaps 78: };
1.116 schwarze 79: const struct man_macro *const man_macros = __man_macros - MAN_TH;
1.1 kristaps 80:
81:
1.91 schwarze 82: void
1.105 schwarze 83: man_unscope(struct roff_man *man, const struct roff_node *to)
1.1 kristaps 84: {
1.102 schwarze 85: struct roff_node *n;
1.1 kristaps 86:
1.83 schwarze 87: to = to->parent;
88: n = man->last;
89: while (n != to) {
1.87 schwarze 90:
91: /* Reached the end of the document? */
92:
1.115 schwarze 93: if (to == NULL && ! (n->flags & NODE_VALID)) {
1.87 schwarze 94: if (man->flags & (MAN_BLINE | MAN_ELINE) &&
95: man_macros[n->tok].flags & MAN_SCOPED) {
96: mandoc_vmsg(MANDOCERR_BLK_LINE,
97: man->parse, n->line, n->pos,
1.116 schwarze 98: "EOF breaks %s", roff_name[n->tok]);
1.87 schwarze 99: if (man->flags & MAN_ELINE)
100: man->flags &= ~MAN_ELINE;
101: else {
1.101 schwarze 102: assert(n->type == ROFFT_HEAD);
1.87 schwarze 103: n = n->parent;
104: man->flags &= ~MAN_BLINE;
105: }
106: man->last = n;
107: n = n->parent;
1.106 schwarze 108: roff_node_delete(man, man->last);
1.87 schwarze 109: continue;
110: }
1.101 schwarze 111: if (n->type == ROFFT_BLOCK &&
1.99 schwarze 112: man_macros[n->tok].fp == blk_exp)
1.87 schwarze 113: mandoc_msg(MANDOCERR_BLK_NOEND,
114: man->parse, n->line, n->pos,
1.116 schwarze 115: roff_name[n->tok]);
1.87 schwarze 116: }
117:
1.55 kristaps 118: /*
1.83 schwarze 119: * We might delete the man->last node
120: * in the post-validation phase.
121: * Save a pointer to the parent such that
122: * we know where to continue the iteration.
1.55 kristaps 123: */
1.89 schwarze 124:
1.83 schwarze 125: man->last = n;
126: n = n->parent;
1.115 schwarze 127: man->last->flags |= NODE_VALID;
1.19 kristaps 128: }
1.89 schwarze 129:
130: /*
131: * If we ended up at the parent of the node we were
132: * supposed to rewind to, that means the target node
133: * got deleted, so add the next node we parse as a child
134: * of the parent instead of as a sibling of the target.
135: */
136:
137: man->next = (man->last == to) ?
1.105 schwarze 138: ROFF_NEXT_CHILD : ROFF_NEXT_SIBLING;
1.19 kristaps 139: }
1.1 kristaps 140:
1.19 kristaps 141: /*
142: * Rewinding entails ascending the parse tree until a coherent point,
143: * for example, the `SH' macro will close out any intervening `SS'
144: * scopes. When a scope is closed, it must be validated and actioned.
145: */
1.91 schwarze 146: static void
1.116 schwarze 147: rew_scope(struct roff_man *man, enum roff_tok tok)
1.19 kristaps 148: {
1.102 schwarze 149: struct roff_node *n;
1.7 kristaps 150:
1.104 schwarze 151: /* Preserve empty paragraphs before RS. */
152:
153: n = man->last;
1.114 schwarze 154: if (tok == MAN_RS && n->child == NULL &&
1.104 schwarze 155: (n->tok == MAN_P || n->tok == MAN_PP || n->tok == MAN_LP))
156: return;
157:
158: for (;;) {
159: if (n->type == ROFFT_ROOT)
160: return;
1.115 schwarze 161: if (n->flags & NODE_VALID) {
1.104 schwarze 162: n = n->parent;
163: continue;
164: }
165: if (n->type != ROFFT_BLOCK) {
166: if (n->parent->type == ROFFT_ROOT) {
167: man_unscope(man, n);
168: return;
169: } else {
170: n = n->parent;
171: continue;
172: }
173: }
174: if (tok != MAN_SH && (n->tok == MAN_SH ||
175: (tok != MAN_SS && (n->tok == MAN_SS ||
176: man_macros[n->tok].fp == blk_exp))))
1.91 schwarze 177: return;
1.104 schwarze 178: man_unscope(man, n);
179: n = man->last;
1.6 kristaps 180: }
1.19 kristaps 181: }
182:
1.6 kristaps 183:
1.36 kristaps 184: /*
185: * Close out a generic explicit macro.
186: */
1.91 schwarze 187: void
1.21 kristaps 188: blk_close(MACRO_PROT_ARGS)
189: {
1.116 schwarze 190: enum roff_tok ntok;
1.102 schwarze 191: const struct roff_node *nn;
1.93 schwarze 192: char *p;
193: int nrew, target;
1.21 kristaps 194:
1.93 schwarze 195: nrew = 1;
1.21 kristaps 196: switch (tok) {
1.82 schwarze 197: case MAN_RE:
1.21 kristaps 198: ntok = MAN_RS;
1.93 schwarze 199: if ( ! man_args(man, line, pos, buf, &p))
200: break;
201: for (nn = man->last->parent; nn; nn = nn->parent)
1.101 schwarze 202: if (nn->tok == ntok && nn->type == ROFFT_BLOCK)
1.93 schwarze 203: nrew++;
204: target = strtol(p, &p, 10);
205: if (*p != '\0')
206: mandoc_vmsg(MANDOCERR_ARG_EXCESS, man->parse,
207: line, p - buf, "RE ... %s", p);
208: if (target == 0)
209: target = 1;
210: nrew -= target;
211: if (nrew < 1) {
212: mandoc_vmsg(MANDOCERR_RE_NOTOPEN, man->parse,
213: line, ppos, "RE %d", target);
214: return;
215: }
1.76 schwarze 216: break;
1.82 schwarze 217: case MAN_UE:
1.76 schwarze 218: ntok = MAN_UR;
1.21 kristaps 219: break;
220: default:
221: abort();
222: }
223:
1.75 schwarze 224: for (nn = man->last->parent; nn; nn = nn->parent)
1.101 schwarze 225: if (nn->tok == ntok && nn->type == ROFFT_BLOCK && ! --nrew)
1.21 kristaps 226: break;
227:
1.91 schwarze 228: if (nn == NULL) {
1.84 schwarze 229: mandoc_msg(MANDOCERR_BLK_NOTOPEN, man->parse,
1.116 schwarze 230: line, ppos, roff_name[tok]);
1.104 schwarze 231: rew_scope(man, MAN_PP);
1.95 schwarze 232: } else {
233: line = man->last->line;
234: ppos = man->last->pos;
235: ntok = man->last->tok;
1.83 schwarze 236: man_unscope(man, nn);
1.95 schwarze 237:
1.121 ! schwarze 238: if (tok == MAN_RE && nn->head->aux > 0)
! 239: roff_setreg(man->roff, "an-margin",
! 240: nn->head->aux, '-');
! 241:
1.95 schwarze 242: /* Move a trailing paragraph behind the block. */
243:
244: if (ntok == MAN_LP || ntok == MAN_PP || ntok == MAN_P) {
245: *pos = strlen(buf);
246: blk_imp(man, ntok, line, ppos, pos, buf);
247: }
248: }
1.21 kristaps 249: }
250:
1.91 schwarze 251: void
1.35 kristaps 252: blk_exp(MACRO_PROT_ARGS)
253: {
1.102 schwarze 254: struct roff_node *head;
1.98 schwarze 255: char *p;
1.59 kristaps 256: int la;
1.35 kristaps 257:
1.104 schwarze 258: rew_scope(man, tok);
1.108 schwarze 259: roff_block_alloc(man, line, ppos, tok);
1.106 schwarze 260: head = roff_head_alloc(man, line, ppos, tok);
1.35 kristaps 261:
1.98 schwarze 262: la = *pos;
1.121 ! schwarze 263: if (man_args(man, line, pos, buf, &p)) {
1.107 schwarze 264: roff_word_alloc(man, line, la, p);
1.121 ! schwarze 265: if (tok == MAN_RS) {
! 266: if (roff_getreg(man->roff, "an-margin") == 0)
! 267: roff_setreg(man->roff, "an-margin",
! 268: 7 * 24, '=');
! 269: if ((head->aux = strtod(p, NULL) * 24.0) > 0)
! 270: roff_setreg(man->roff, "an-margin",
! 271: head->aux, '+');
! 272: }
! 273: }
1.35 kristaps 274:
1.98 schwarze 275: if (buf[*pos] != '\0')
1.116 schwarze 276: mandoc_vmsg(MANDOCERR_ARG_EXCESS, man->parse, line,
277: *pos, "%s ... %s", roff_name[tok], buf + *pos);
1.73 schwarze 278:
1.98 schwarze 279: man_unscope(man, head);
1.106 schwarze 280: roff_body_alloc(man, line, ppos, tok);
1.35 kristaps 281: }
282:
1.19 kristaps 283: /*
1.101 schwarze 284: * Parse an implicit-block macro. These contain a ROFFT_HEAD and a
285: * ROFFT_BODY contained within a ROFFT_BLOCK. Rules for closing out other
1.19 kristaps 286: * scopes, such as `SH' closing out an `SS', are defined in the rew
287: * routines.
288: */
1.91 schwarze 289: void
1.19 kristaps 290: blk_imp(MACRO_PROT_ARGS)
291: {
1.59 kristaps 292: int la;
1.19 kristaps 293: char *p;
1.102 schwarze 294: struct roff_node *n;
1.19 kristaps 295:
1.104 schwarze 296: rew_scope(man, tok);
1.108 schwarze 297: n = roff_block_alloc(man, line, ppos, tok);
1.106 schwarze 298: if (n->tok == MAN_SH || n->tok == MAN_SS)
299: man->flags &= ~MAN_LITERAL;
300: n = roff_head_alloc(man, line, ppos, tok);
1.25 kristaps 301:
1.19 kristaps 302: /* Add line arguments. */
1.3 kristaps 303:
1.19 kristaps 304: for (;;) {
305: la = *pos;
1.75 schwarze 306: if ( ! man_args(man, line, pos, buf, &p))
1.19 kristaps 307: break;
1.107 schwarze 308: roff_word_alloc(man, line, la, p);
1.6 kristaps 309: }
310:
1.99 schwarze 311: /*
312: * For macros having optional next-line scope,
313: * keep the head open if there were no arguments.
314: * For `TP', always keep the head open.
315: */
1.19 kristaps 316:
1.99 schwarze 317: if (man_macros[tok].flags & MAN_SCOPED &&
318: (tok == MAN_TP || n == man->last)) {
319: man->flags |= MAN_BLINE;
320: return;
1.27 kristaps 321: }
1.99 schwarze 322:
323: /* Close out the head and open the body. */
324:
1.103 schwarze 325: man_unscope(man, n);
1.106 schwarze 326: roff_body_alloc(man, line, ppos, tok);
1.4 kristaps 327: }
328:
1.91 schwarze 329: void
1.19 kristaps 330: in_line_eoln(MACRO_PROT_ARGS)
1.3 kristaps 331: {
1.59 kristaps 332: int la;
1.19 kristaps 333: char *p;
1.102 schwarze 334: struct roff_node *n;
1.3 kristaps 335:
1.108 schwarze 336: roff_elem_alloc(man, line, ppos, tok);
1.75 schwarze 337: n = man->last;
1.3 kristaps 338:
1.19 kristaps 339: for (;;) {
1.117 schwarze 340: if (buf[*pos] != '\0' && (tok == MAN_fi || tok == MAN_nf)) {
1.96 schwarze 341: mandoc_vmsg(MANDOCERR_ARG_SKIP,
342: man->parse, line, *pos, "%s %s",
1.116 schwarze 343: roff_name[tok], buf + *pos);
1.97 schwarze 344: break;
345: }
1.120 schwarze 346: if (buf[*pos] != '\0' && man->last != n && tok == MAN_PD) {
1.97 schwarze 347: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
348: man->parse, line, *pos, "%s ... %s",
1.116 schwarze 349: roff_name[tok], buf + *pos);
1.96 schwarze 350: break;
351: }
1.19 kristaps 352: la = *pos;
1.75 schwarze 353: if ( ! man_args(man, line, pos, buf, &p))
1.19 kristaps 354: break;
1.90 schwarze 355: if (man_macros[tok].flags & MAN_JOIN &&
1.101 schwarze 356: man->last->type == ROFFT_TEXT)
1.107 schwarze 357: roff_word_append(man, p);
1.91 schwarze 358: else
1.107 schwarze 359: roff_word_alloc(man, line, la, p);
1.19 kristaps 360: }
1.78 schwarze 361:
362: /*
1.115 schwarze 363: * Append NODE_EOS in case the last snipped argument
1.78 schwarze 364: * ends with a dot, e.g. `.IR syslog (3).'
365: */
366:
367: if (n != man->last &&
1.80 schwarze 368: mandoc_eos(man->last->string, strlen(man->last->string)))
1.115 schwarze 369: man->last->flags |= NODE_EOS;
1.3 kristaps 370:
1.31 kristaps 371: /*
372: * If no arguments are specified and this is MAN_SCOPED (i.e.,
373: * next-line scoped), then set our mode to indicate that we're
374: * waiting for terms to load into our context.
375: */
376:
1.91 schwarze 377: if (n == man->last && man_macros[tok].flags & MAN_SCOPED) {
378: assert( ! (man_macros[tok].flags & MAN_NSCOPED));
1.75 schwarze 379: man->flags |= MAN_ELINE;
1.91 schwarze 380: return;
1.31 kristaps 381: }
1.64 kristaps 382:
1.101 schwarze 383: assert(man->last->type != ROFFT_ROOT);
1.105 schwarze 384: man->next = ROFF_NEXT_SIBLING;
1.82 schwarze 385:
1.113 schwarze 386: /* Rewind our element scope. */
1.3 kristaps 387:
1.75 schwarze 388: for ( ; man->last; man->last = man->last->parent) {
1.113 schwarze 389: man_state(man, man->last);
1.75 schwarze 390: if (man->last == n)
1.19 kristaps 391: break;
392: }
393: }
1.3 kristaps 394:
1.91 schwarze 395: void
1.109 schwarze 396: man_endparse(struct roff_man *man)
1.19 kristaps 397: {
1.22 kristaps 398:
1.91 schwarze 399: man_unscope(man, man->first);
1.113 schwarze 400: man->flags &= ~MAN_LITERAL;
1.19 kristaps 401: }
1.3 kristaps 402:
1.60 kristaps 403: static int
1.105 schwarze 404: man_args(struct roff_man *man, int line, int *pos, char *buf, char **v)
1.60 kristaps 405: {
406: char *start;
407:
408: assert(*pos);
409: *v = start = buf + *pos;
410: assert(' ' != *start);
411:
412: if ('\0' == *start)
1.112 schwarze 413: return 0;
1.60 kristaps 414:
1.75 schwarze 415: *v = mandoc_getarg(man->parse, v, line, pos);
1.112 schwarze 416: return 1;
1.60 kristaps 417: }
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