Annotation of mandoc/man_macro.c, Revision 1.117
1.117 ! schwarze 1: /* $Id: man_macro.c,v 1.116 2017/04/24 23:06:18 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 */
1.31 kristaps 64: { in_line_eoln, MAN_NSCOPED }, /* sp */
1.110 schwarze 65: { in_line_eoln, MAN_NSCOPED }, /* nf */
66: { in_line_eoln, MAN_NSCOPED }, /* fi */
1.92 schwarze 67: { blk_close, MAN_BSCOPE }, /* RE */
1.99 schwarze 68: { blk_exp, MAN_BSCOPE }, /* RS */
1.23 kristaps 69: { in_line_eoln, 0 }, /* DT */
1.28 kristaps 70: { in_line_eoln, 0 }, /* UC */
1.100 schwarze 71: { in_line_eoln, MAN_NSCOPED }, /* PD */
1.45 joerg 72: { in_line_eoln, 0 }, /* AT */
1.49 kristaps 73: { in_line_eoln, 0 }, /* in */
1.53 kristaps 74: { in_line_eoln, 0 }, /* ft */
1.71 kristaps 75: { in_line_eoln, 0 }, /* OP */
1.72 schwarze 76: { in_line_eoln, MAN_BSCOPE }, /* EX */
77: { in_line_eoln, MAN_BSCOPE }, /* EE */
1.99 schwarze 78: { blk_exp, MAN_BSCOPE }, /* UR */
1.92 schwarze 79: { blk_close, MAN_BSCOPE }, /* UE */
1.81 schwarze 80: { in_line_eoln, 0 }, /* ll */
1.19 kristaps 81: };
1.116 schwarze 82: const struct man_macro *const man_macros = __man_macros - MAN_TH;
1.1 kristaps 83:
84:
1.91 schwarze 85: void
1.105 schwarze 86: man_unscope(struct roff_man *man, const struct roff_node *to)
1.1 kristaps 87: {
1.102 schwarze 88: struct roff_node *n;
1.1 kristaps 89:
1.83 schwarze 90: to = to->parent;
91: n = man->last;
92: while (n != to) {
1.87 schwarze 93:
94: /* Reached the end of the document? */
95:
1.115 schwarze 96: if (to == NULL && ! (n->flags & NODE_VALID)) {
1.87 schwarze 97: if (man->flags & (MAN_BLINE | MAN_ELINE) &&
98: man_macros[n->tok].flags & MAN_SCOPED) {
99: mandoc_vmsg(MANDOCERR_BLK_LINE,
100: man->parse, n->line, n->pos,
1.116 schwarze 101: "EOF breaks %s", roff_name[n->tok]);
1.87 schwarze 102: if (man->flags & MAN_ELINE)
103: man->flags &= ~MAN_ELINE;
104: else {
1.101 schwarze 105: assert(n->type == ROFFT_HEAD);
1.87 schwarze 106: n = n->parent;
107: man->flags &= ~MAN_BLINE;
108: }
109: man->last = n;
110: n = n->parent;
1.106 schwarze 111: roff_node_delete(man, man->last);
1.87 schwarze 112: continue;
113: }
1.101 schwarze 114: if (n->type == ROFFT_BLOCK &&
1.99 schwarze 115: man_macros[n->tok].fp == blk_exp)
1.87 schwarze 116: mandoc_msg(MANDOCERR_BLK_NOEND,
117: man->parse, n->line, n->pos,
1.116 schwarze 118: roff_name[n->tok]);
1.87 schwarze 119: }
120:
1.55 kristaps 121: /*
1.83 schwarze 122: * We might delete the man->last node
123: * in the post-validation phase.
124: * Save a pointer to the parent such that
125: * we know where to continue the iteration.
1.55 kristaps 126: */
1.89 schwarze 127:
1.83 schwarze 128: man->last = n;
129: n = n->parent;
1.115 schwarze 130: man->last->flags |= NODE_VALID;
1.19 kristaps 131: }
1.89 schwarze 132:
133: /*
134: * If we ended up at the parent of the node we were
135: * supposed to rewind to, that means the target node
136: * got deleted, so add the next node we parse as a child
137: * of the parent instead of as a sibling of the target.
138: */
139:
140: man->next = (man->last == to) ?
1.105 schwarze 141: ROFF_NEXT_CHILD : ROFF_NEXT_SIBLING;
1.19 kristaps 142: }
1.1 kristaps 143:
1.19 kristaps 144: /*
145: * Rewinding entails ascending the parse tree until a coherent point,
146: * for example, the `SH' macro will close out any intervening `SS'
147: * scopes. When a scope is closed, it must be validated and actioned.
148: */
1.91 schwarze 149: static void
1.116 schwarze 150: rew_scope(struct roff_man *man, enum roff_tok tok)
1.19 kristaps 151: {
1.102 schwarze 152: struct roff_node *n;
1.7 kristaps 153:
1.104 schwarze 154: /* Preserve empty paragraphs before RS. */
155:
156: n = man->last;
1.114 schwarze 157: if (tok == MAN_RS && n->child == NULL &&
1.104 schwarze 158: (n->tok == MAN_P || n->tok == MAN_PP || n->tok == MAN_LP))
159: return;
160:
161: for (;;) {
162: if (n->type == ROFFT_ROOT)
163: return;
1.115 schwarze 164: if (n->flags & NODE_VALID) {
1.104 schwarze 165: n = n->parent;
166: continue;
167: }
168: if (n->type != ROFFT_BLOCK) {
169: if (n->parent->type == ROFFT_ROOT) {
170: man_unscope(man, n);
171: return;
172: } else {
173: n = n->parent;
174: continue;
175: }
176: }
177: if (tok != MAN_SH && (n->tok == MAN_SH ||
178: (tok != MAN_SS && (n->tok == MAN_SS ||
179: man_macros[n->tok].fp == blk_exp))))
1.91 schwarze 180: return;
1.104 schwarze 181: man_unscope(man, n);
182: n = man->last;
1.6 kristaps 183: }
1.19 kristaps 184: }
185:
1.6 kristaps 186:
1.36 kristaps 187: /*
188: * Close out a generic explicit macro.
189: */
1.91 schwarze 190: void
1.21 kristaps 191: blk_close(MACRO_PROT_ARGS)
192: {
1.116 schwarze 193: enum roff_tok ntok;
1.102 schwarze 194: const struct roff_node *nn;
1.93 schwarze 195: char *p;
196: int nrew, target;
1.21 kristaps 197:
1.93 schwarze 198: nrew = 1;
1.21 kristaps 199: switch (tok) {
1.82 schwarze 200: case MAN_RE:
1.21 kristaps 201: ntok = MAN_RS;
1.93 schwarze 202: if ( ! man_args(man, line, pos, buf, &p))
203: break;
204: for (nn = man->last->parent; nn; nn = nn->parent)
1.101 schwarze 205: if (nn->tok == ntok && nn->type == ROFFT_BLOCK)
1.93 schwarze 206: nrew++;
207: target = strtol(p, &p, 10);
208: if (*p != '\0')
209: mandoc_vmsg(MANDOCERR_ARG_EXCESS, man->parse,
210: line, p - buf, "RE ... %s", p);
211: if (target == 0)
212: target = 1;
213: nrew -= target;
214: if (nrew < 1) {
215: mandoc_vmsg(MANDOCERR_RE_NOTOPEN, man->parse,
216: line, ppos, "RE %d", target);
217: return;
218: }
1.76 schwarze 219: break;
1.82 schwarze 220: case MAN_UE:
1.76 schwarze 221: ntok = MAN_UR;
1.21 kristaps 222: break;
223: default:
224: abort();
225: }
226:
1.75 schwarze 227: for (nn = man->last->parent; nn; nn = nn->parent)
1.101 schwarze 228: if (nn->tok == ntok && nn->type == ROFFT_BLOCK && ! --nrew)
1.21 kristaps 229: break;
230:
1.91 schwarze 231: if (nn == NULL) {
1.84 schwarze 232: mandoc_msg(MANDOCERR_BLK_NOTOPEN, man->parse,
1.116 schwarze 233: line, ppos, roff_name[tok]);
1.104 schwarze 234: rew_scope(man, MAN_PP);
1.95 schwarze 235: } else {
236: line = man->last->line;
237: ppos = man->last->pos;
238: ntok = man->last->tok;
1.83 schwarze 239: man_unscope(man, nn);
1.95 schwarze 240:
241: /* Move a trailing paragraph behind the block. */
242:
243: if (ntok == MAN_LP || ntok == MAN_PP || ntok == MAN_P) {
244: *pos = strlen(buf);
245: blk_imp(man, ntok, line, ppos, pos, buf);
246: }
247: }
1.21 kristaps 248: }
249:
1.91 schwarze 250: void
1.35 kristaps 251: blk_exp(MACRO_PROT_ARGS)
252: {
1.102 schwarze 253: struct roff_node *head;
1.98 schwarze 254: char *p;
1.59 kristaps 255: int la;
1.35 kristaps 256:
1.104 schwarze 257: rew_scope(man, tok);
1.108 schwarze 258: roff_block_alloc(man, line, ppos, tok);
1.106 schwarze 259: head = roff_head_alloc(man, line, ppos, tok);
1.35 kristaps 260:
1.98 schwarze 261: la = *pos;
262: if (man_args(man, line, pos, buf, &p))
1.107 schwarze 263: roff_word_alloc(man, line, la, p);
1.35 kristaps 264:
1.98 schwarze 265: if (buf[*pos] != '\0')
1.116 schwarze 266: mandoc_vmsg(MANDOCERR_ARG_EXCESS, man->parse, line,
267: *pos, "%s ... %s", roff_name[tok], buf + *pos);
1.73 schwarze 268:
1.98 schwarze 269: man_unscope(man, head);
1.106 schwarze 270: roff_body_alloc(man, line, ppos, tok);
1.35 kristaps 271: }
272:
1.19 kristaps 273: /*
1.101 schwarze 274: * Parse an implicit-block macro. These contain a ROFFT_HEAD and a
275: * ROFFT_BODY contained within a ROFFT_BLOCK. Rules for closing out other
1.19 kristaps 276: * scopes, such as `SH' closing out an `SS', are defined in the rew
277: * routines.
278: */
1.91 schwarze 279: void
1.19 kristaps 280: blk_imp(MACRO_PROT_ARGS)
281: {
1.59 kristaps 282: int la;
1.19 kristaps 283: char *p;
1.102 schwarze 284: struct roff_node *n;
1.19 kristaps 285:
1.104 schwarze 286: rew_scope(man, tok);
1.108 schwarze 287: n = roff_block_alloc(man, line, ppos, tok);
1.106 schwarze 288: if (n->tok == MAN_SH || n->tok == MAN_SS)
289: man->flags &= ~MAN_LITERAL;
290: n = roff_head_alloc(man, line, ppos, tok);
1.25 kristaps 291:
1.19 kristaps 292: /* Add line arguments. */
1.3 kristaps 293:
1.19 kristaps 294: for (;;) {
295: la = *pos;
1.75 schwarze 296: if ( ! man_args(man, line, pos, buf, &p))
1.19 kristaps 297: break;
1.107 schwarze 298: roff_word_alloc(man, line, la, p);
1.6 kristaps 299: }
300:
1.99 schwarze 301: /*
302: * For macros having optional next-line scope,
303: * keep the head open if there were no arguments.
304: * For `TP', always keep the head open.
305: */
1.19 kristaps 306:
1.99 schwarze 307: if (man_macros[tok].flags & MAN_SCOPED &&
308: (tok == MAN_TP || n == man->last)) {
309: man->flags |= MAN_BLINE;
310: return;
1.27 kristaps 311: }
1.99 schwarze 312:
313: /* Close out the head and open the body. */
314:
1.103 schwarze 315: man_unscope(man, n);
1.106 schwarze 316: roff_body_alloc(man, line, ppos, tok);
1.4 kristaps 317: }
318:
1.91 schwarze 319: void
1.19 kristaps 320: in_line_eoln(MACRO_PROT_ARGS)
1.3 kristaps 321: {
1.59 kristaps 322: int la;
1.19 kristaps 323: char *p;
1.102 schwarze 324: struct roff_node *n;
1.3 kristaps 325:
1.108 schwarze 326: roff_elem_alloc(man, line, ppos, tok);
1.75 schwarze 327: n = man->last;
1.3 kristaps 328:
1.19 kristaps 329: for (;;) {
1.117 ! schwarze 330: if (buf[*pos] != '\0' && (tok == MAN_fi || tok == MAN_nf)) {
1.96 schwarze 331: mandoc_vmsg(MANDOCERR_ARG_SKIP,
332: man->parse, line, *pos, "%s %s",
1.116 schwarze 333: roff_name[tok], buf + *pos);
1.97 schwarze 334: break;
335: }
336: if (buf[*pos] != '\0' && man->last != n &&
337: (tok == MAN_PD || tok == MAN_ft || tok == MAN_sp)) {
338: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
339: man->parse, line, *pos, "%s ... %s",
1.116 schwarze 340: roff_name[tok], buf + *pos);
1.96 schwarze 341: break;
342: }
1.19 kristaps 343: la = *pos;
1.75 schwarze 344: if ( ! man_args(man, line, pos, buf, &p))
1.19 kristaps 345: break;
1.90 schwarze 346: if (man_macros[tok].flags & MAN_JOIN &&
1.101 schwarze 347: man->last->type == ROFFT_TEXT)
1.107 schwarze 348: roff_word_append(man, p);
1.91 schwarze 349: else
1.107 schwarze 350: roff_word_alloc(man, line, la, p);
1.19 kristaps 351: }
1.78 schwarze 352:
353: /*
1.115 schwarze 354: * Append NODE_EOS in case the last snipped argument
1.78 schwarze 355: * ends with a dot, e.g. `.IR syslog (3).'
356: */
357:
358: if (n != man->last &&
1.80 schwarze 359: mandoc_eos(man->last->string, strlen(man->last->string)))
1.115 schwarze 360: man->last->flags |= NODE_EOS;
1.3 kristaps 361:
1.31 kristaps 362: /*
363: * If no arguments are specified and this is MAN_SCOPED (i.e.,
364: * next-line scoped), then set our mode to indicate that we're
365: * waiting for terms to load into our context.
366: */
367:
1.91 schwarze 368: if (n == man->last && man_macros[tok].flags & MAN_SCOPED) {
369: assert( ! (man_macros[tok].flags & MAN_NSCOPED));
1.75 schwarze 370: man->flags |= MAN_ELINE;
1.91 schwarze 371: return;
1.31 kristaps 372: }
1.64 kristaps 373:
1.101 schwarze 374: assert(man->last->type != ROFFT_ROOT);
1.105 schwarze 375: man->next = ROFF_NEXT_SIBLING;
1.82 schwarze 376:
1.113 schwarze 377: /* Rewind our element scope. */
1.3 kristaps 378:
1.75 schwarze 379: for ( ; man->last; man->last = man->last->parent) {
1.113 schwarze 380: man_state(man, man->last);
1.75 schwarze 381: if (man->last == n)
1.19 kristaps 382: break;
383: }
384: }
1.3 kristaps 385:
1.91 schwarze 386: void
1.109 schwarze 387: man_endparse(struct roff_man *man)
1.19 kristaps 388: {
1.22 kristaps 389:
1.91 schwarze 390: man_unscope(man, man->first);
1.113 schwarze 391: man->flags &= ~MAN_LITERAL;
1.19 kristaps 392: }
1.3 kristaps 393:
1.60 kristaps 394: static int
1.105 schwarze 395: man_args(struct roff_man *man, int line, int *pos, char *buf, char **v)
1.60 kristaps 396: {
397: char *start;
398:
399: assert(*pos);
400: *v = start = buf + *pos;
401: assert(' ' != *start);
402:
403: if ('\0' == *start)
1.112 schwarze 404: return 0;
1.60 kristaps 405:
1.75 schwarze 406: *v = mandoc_getarg(man->parse, v, line, pos);
1.112 schwarze 407: return 1;
1.60 kristaps 408: }
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