1 /* $Id: man_macro.c,v 1.71 2012/01/03 15:16:24 kristaps Exp $ */
2 /*
3 * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17 #ifdef HAVE_CONFIG_H
18 #include "config.h"
19 #endif
20
21 #include <assert.h>
22 #include <ctype.h>
23 #include <stdlib.h>
60 { blk_imp, MAN_BSCOPE }, /* PP */
61 { blk_imp, MAN_BSCOPE }, /* P */
62 { blk_imp, MAN_BSCOPE }, /* IP */
63 { blk_imp, MAN_BSCOPE }, /* HP */
64 { in_line_eoln, MAN_SCOPED }, /* SM */
65 { in_line_eoln, MAN_SCOPED }, /* SB */
66 { in_line_eoln, 0 }, /* BI */
67 { in_line_eoln, 0 }, /* IB */
68 { in_line_eoln, 0 }, /* BR */
69 { in_line_eoln, 0 }, /* RB */
70 { in_line_eoln, MAN_SCOPED }, /* R */
71 { in_line_eoln, MAN_SCOPED }, /* B */
72 { in_line_eoln, MAN_SCOPED }, /* I */
73 { in_line_eoln, 0 }, /* IR */
74 { in_line_eoln, 0 }, /* RI */
75 { in_line_eoln, MAN_NSCOPED }, /* na */
76 { in_line_eoln, MAN_NSCOPED }, /* sp */
77 { in_line_eoln, MAN_BSCOPE }, /* nf */
78 { in_line_eoln, MAN_BSCOPE }, /* fi */
79 { blk_close, 0 }, /* RE */
80 { blk_exp, MAN_EXPLICIT }, /* RS */
81 { in_line_eoln, 0 }, /* DT */
82 { in_line_eoln, 0 }, /* UC */
83 { in_line_eoln, 0 }, /* PD */
84 { in_line_eoln, 0 }, /* AT */
85 { in_line_eoln, 0 }, /* in */
86 { in_line_eoln, 0 }, /* ft */
87 { in_line_eoln, 0 }, /* OP */
88 };
89
90 const struct man_macro * const man_macros = __man_macros;
91
92
93 /*
94 * Warn when "n" is an explicit non-roff macro.
95 */
96 static void
97 rew_warn(struct man *m, struct man_node *n, enum mandocerr er)
98 {
99
100 if (er == MANDOCERR_MAX || MAN_BLOCK != n->type)
101 return;
102 if (MAN_VALID & n->flags)
103 return;
104 if ( ! (MAN_EXPLICIT & man_macros[n->tok].flags))
105 return;
106
107 assert(er < MANDOCERR_FATAL);
108 man_nmsg(m, n, er);
109 }
110
111
112 /*
113 * Rewind scope. If a code "er" != MANDOCERR_MAX has been provided, it
114 * will be used if an explicit block scope is being closed out.
115 */
116 int
117 man_unscope(struct man *m, const struct man_node *to,
118 enum mandocerr er)
119 {
120 struct man_node *n;
121
122 assert(to);
123
124 m->next = MAN_NEXT_SIBLING;
125
126 /* LINTED */
127 while (m->last != to) {
128 /*
129 * Save the parent here, because we may delete the
130 * m->last node in the post-validation phase and reset
131 * it to m->last->parent, causing a step in the closing
132 * out to be lost.
133 */
134 n = m->last->parent;
135 rew_warn(m, m->last, er);
136 if ( ! man_valid_post(m))
137 return(0);
138 m->last = n;
139 assert(m->last);
140 }
141
142 rew_warn(m, m->last, er);
143 if ( ! man_valid_post(m))
144 return(0);
145
146 return(1);
147 }
148
149
150 static enum rew
151 rew_block(enum mant ntok, enum man_type type, const struct man_node *n)
152 {
153
154 if (MAN_BLOCK == type && ntok == n->parent->tok &&
155 MAN_BODY == n->parent->type)
156 return(REW_REWIND);
157 return(ntok == n->tok ? REW_HALT : REW_NOHALT);
158 }
159
160
161 /*
162 * There are three scope levels: scoped to the root (all), scoped to the
163 * section (all less sections), and scoped to subsections (all less
166 static enum rew
167 rew_dohalt(enum mant tok, enum man_type type, const struct man_node *n)
168 {
169 enum rew c;
170
171 /* We cannot progress beyond the root ever. */
172 if (MAN_ROOT == n->type)
173 return(REW_HALT);
174
175 assert(n->parent);
176
177 /* Normal nodes shouldn't go to the level of the root. */
178 if (MAN_ROOT == n->parent->type)
179 return(REW_REWIND);
180
181 /* Already-validated nodes should be closed out. */
182 if (MAN_VALID & n->flags)
183 return(REW_NOHALT);
184
185 /* First: rewind to ourselves. */
186 if (type == n->type && tok == n->tok)
187 return(REW_REWIND);
188
189 /*
190 * Next follow the implicit scope-smashings as defined by man.7:
191 * section, sub-section, etc.
192 */
193
194 switch (tok) {
195 case (MAN_SH):
196 break;
197 case (MAN_SS):
198 /* Rewind to a section, if a block. */
199 if (REW_NOHALT != (c = rew_block(MAN_SH, type, n)))
200 return(c);
201 break;
202 case (MAN_RS):
203 /* Rewind to a subsection, if a block. */
204 if (REW_NOHALT != (c = rew_block(MAN_SS, type, n)))
205 return(c);
206 /* Rewind to a section, if a block. */
207 if (REW_NOHALT != (c = rew_block(MAN_SH, type, n)))
208 return(c);
209 break;
210 default:
211 /* Rewind to an offsetter, if a block. */
212 if (REW_NOHALT != (c = rew_block(MAN_RS, type, n)))
213 return(c);
214 /* Rewind to a subsection, if a block. */
215 if (REW_NOHALT != (c = rew_block(MAN_SS, type, n)))
216 return(c);
217 /* Rewind to a section, if a block. */
218 if (REW_NOHALT != (c = rew_block(MAN_SH, type, n)))
219 return(c);
220 break;
221 }
222
223 return(REW_NOHALT);
224 }
225
226
227 /*
228 * Rewinding entails ascending the parse tree until a coherent point,
229 * for example, the `SH' macro will close out any intervening `SS'
230 * scopes. When a scope is closed, it must be validated and actioned.
231 */
232 static int
233 rew_scope(enum man_type type, struct man *m, enum mant tok)
234 {
235 struct man_node *n;
236 enum rew c;
237
238 /* LINTED */
239 for (n = m->last; n; n = n->parent) {
240 /*
241 * Whether we should stop immediately (REW_HALT), stop
242 * and rewind until this point (REW_REWIND), or keep
243 * rewinding (REW_NOHALT).
244 */
245 c = rew_dohalt(tok, type, n);
246 if (REW_HALT == c)
247 return(1);
248 if (REW_REWIND == c)
249 break;
250 }
251
252 /*
253 * Rewind until the current point. Warn if we're a roff
254 * instruction that's mowing over explicit scopes.
255 */
256 assert(n);
257
258 return(man_unscope(m, n, MANDOCERR_MAX));
259 }
260
261
262 /*
263 * Close out a generic explicit macro.
264 */
265 /* ARGSUSED */
266 int
267 blk_close(MACRO_PROT_ARGS)
268 {
269 enum mant ntok;
270 const struct man_node *nn;
271
272 switch (tok) {
273 case (MAN_RE):
274 ntok = MAN_RS;
275 break;
276 default:
277 abort();
278 /* NOTREACHED */
279 }
280
281 for (nn = m->last->parent; nn; nn = nn->parent)
282 if (ntok == nn->tok)
283 break;
284
285 if (NULL == nn)
286 man_pmsg(m, line, ppos, MANDOCERR_NOSCOPE);
287
288 if ( ! rew_scope(MAN_BODY, m, ntok))
289 return(0);
290 if ( ! rew_scope(MAN_BLOCK, m, ntok))
291 return(0);
292
293 return(1);
294 }
295
296
297 /* ARGSUSED */
298 int
299 blk_exp(MACRO_PROT_ARGS)
300 {
301 int la;
302 char *p;
303
304 /*
305 * Close out prior scopes. "Regular" explicit macros cannot be
306 * nested, but we allow roff macros to be placed just about
307 * anywhere.
308 */
309
310 if ( ! man_block_alloc(m, line, ppos, tok))
311 return(0);
312 if ( ! man_head_alloc(m, line, ppos, tok))
313 return(0);
314
315 for (;;) {
316 la = *pos;
317 if ( ! man_args(m, line, pos, buf, &p))
318 break;
319 if ( ! man_word_alloc(m, line, la, p))
320 return(0);
321 }
322
323 assert(m);
324 assert(tok != MAN_MAX);
325
326 if ( ! rew_scope(MAN_HEAD, m, tok))
327 return(0);
328 return(man_body_alloc(m, line, ppos, tok));
329 }
330
331
332
333 /*
334 * Parse an implicit-block macro. These contain a MAN_HEAD and a
335 * MAN_BODY contained within a MAN_BLOCK. Rules for closing out other
336 * scopes, such as `SH' closing out an `SS', are defined in the rew
337 * routines.
338 */
339 /* ARGSUSED */
340 int
341 blk_imp(MACRO_PROT_ARGS)
342 {
343 int la;
344 char *p;
345 struct man_node *n;
346
347 /* Close out prior scopes. */
348
349 if ( ! rew_scope(MAN_BODY, m, tok))
350 return(0);
351 if ( ! rew_scope(MAN_BLOCK, m, tok))
352 return(0);
353
354 /* Allocate new block & head scope. */
355
356 if ( ! man_block_alloc(m, line, ppos, tok))
357 return(0);
358 if ( ! man_head_alloc(m, line, ppos, tok))
359 return(0);
360
361 n = m->last;
362
363 /* Add line arguments. */
364
365 for (;;) {
366 la = *pos;
367 if ( ! man_args(m, line, pos, buf, &p))
368 break;
369 if ( ! man_word_alloc(m, line, la, p))
370 return(0);
371 }
372
373 /* Close out head and open body (unless MAN_SCOPE). */
374
375 if (MAN_SCOPED & man_macros[tok].flags) {
376 /* If we're forcing scope (`TP'), keep it open. */
377 if (MAN_FSCOPED & man_macros[tok].flags) {
378 m->flags |= MAN_BLINE;
379 return(1);
380 } else if (n == m->last) {
381 m->flags |= MAN_BLINE;
382 return(1);
383 }
384 }
385
386 if ( ! rew_scope(MAN_HEAD, m, tok))
387 return(0);
388 return(man_body_alloc(m, line, ppos, tok));
389 }
390
391
392 /* ARGSUSED */
393 int
394 in_line_eoln(MACRO_PROT_ARGS)
395 {
396 int la;
397 char *p;
398 struct man_node *n;
399
400 if ( ! man_elem_alloc(m, line, ppos, tok))
401 return(0);
402
403 n = m->last;
404
405 for (;;) {
406 la = *pos;
407 if ( ! man_args(m, line, pos, buf, &p))
408 break;
409 if ( ! man_word_alloc(m, line, la, p))
410 return(0);
411 }
412
413 /*
414 * If no arguments are specified and this is MAN_SCOPED (i.e.,
415 * next-line scoped), then set our mode to indicate that we're
416 * waiting for terms to load into our context.
417 */
418
419 if (n == m->last && MAN_SCOPED & man_macros[tok].flags) {
420 assert( ! (MAN_NSCOPED & man_macros[tok].flags));
421 m->flags |= MAN_ELINE;
422 return(1);
423 }
424
425 /* Set ignorable context, if applicable. */
426
427 if (MAN_NSCOPED & man_macros[tok].flags) {
428 assert( ! (MAN_SCOPED & man_macros[tok].flags));
429 m->flags |= MAN_ILINE;
430 }
431
432 assert(MAN_ROOT != m->last->type);
433 m->next = MAN_NEXT_SIBLING;
434
435 /*
436 * Rewind our element scope. Note that when TH is pruned, we'll
437 * be back at the root, so make sure that we don't clobber as
438 * its sibling.
439 */
440
441 for ( ; m->last; m->last = m->last->parent) {
442 if (m->last == n)
443 break;
444 if (m->last->type == MAN_ROOT)
445 break;
446 if ( ! man_valid_post(m))
447 return(0);
448 }
449
450 assert(m->last);
451
452 /*
453 * Same here regarding whether we're back at the root.
454 */
455
456 if (m->last->type != MAN_ROOT && ! man_valid_post(m))
457 return(0);
458
459 return(1);
460 }
461
462
463 int
464 man_macroend(struct man *m)
465 {
466
467 return(man_unscope(m, m->first, MANDOCERR_SCOPEEXIT));
468 }
469
470 static int
471 man_args(struct man *m, int line, int *pos, char *buf, char **v)
472 {
473 char *start;
474
475 assert(*pos);
476 *v = start = buf + *pos;
477 assert(' ' != *start);
478
479 if ('\0' == *start)
480 return(0);
481
482 *v = mandoc_getarg(m->parse, v, line, pos);
483 return(1);
484 }
|
1 /* $Id: man_macro.c,v 1.79 2013/12/25 00:50:05 schwarze Exp $ */
2 /*
3 * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2012, 2013 Ingo Schwarze <schwarze@openbsd.org>
5 * Copyright (c) 2013 Franco Fichtner <franco@lastsummer.de>
6 *
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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.
18 */
19 #ifdef HAVE_CONFIG_H
20 #include "config.h"
21 #endif
22
23 #include <assert.h>
24 #include <ctype.h>
25 #include <stdlib.h>
62 { blk_imp, MAN_BSCOPE }, /* PP */
63 { blk_imp, MAN_BSCOPE }, /* P */
64 { blk_imp, MAN_BSCOPE }, /* IP */
65 { blk_imp, MAN_BSCOPE }, /* HP */
66 { in_line_eoln, MAN_SCOPED }, /* SM */
67 { in_line_eoln, MAN_SCOPED }, /* SB */
68 { in_line_eoln, 0 }, /* BI */
69 { in_line_eoln, 0 }, /* IB */
70 { in_line_eoln, 0 }, /* BR */
71 { in_line_eoln, 0 }, /* RB */
72 { in_line_eoln, MAN_SCOPED }, /* R */
73 { in_line_eoln, MAN_SCOPED }, /* B */
74 { in_line_eoln, MAN_SCOPED }, /* I */
75 { in_line_eoln, 0 }, /* IR */
76 { in_line_eoln, 0 }, /* RI */
77 { in_line_eoln, MAN_NSCOPED }, /* na */
78 { in_line_eoln, MAN_NSCOPED }, /* sp */
79 { in_line_eoln, MAN_BSCOPE }, /* nf */
80 { in_line_eoln, MAN_BSCOPE }, /* fi */
81 { blk_close, 0 }, /* RE */
82 { blk_exp, MAN_BSCOPE | MAN_EXPLICIT }, /* RS */
83 { in_line_eoln, 0 }, /* DT */
84 { in_line_eoln, 0 }, /* UC */
85 { in_line_eoln, 0 }, /* PD */
86 { in_line_eoln, 0 }, /* AT */
87 { in_line_eoln, 0 }, /* in */
88 { in_line_eoln, 0 }, /* ft */
89 { in_line_eoln, 0 }, /* OP */
90 { in_line_eoln, MAN_BSCOPE }, /* EX */
91 { in_line_eoln, MAN_BSCOPE }, /* EE */
92 { blk_exp, MAN_BSCOPE | MAN_EXPLICIT }, /* UR */
93 { blk_close, 0 }, /* UE */
94 };
95
96 const struct man_macro * const man_macros = __man_macros;
97
98
99 /*
100 * Warn when "n" is an explicit non-roff macro.
101 */
102 static void
103 rew_warn(struct man *man, struct man_node *n, enum mandocerr er)
104 {
105
106 if (er == MANDOCERR_MAX || MAN_BLOCK != n->type)
107 return;
108 if (MAN_VALID & n->flags)
109 return;
110 if ( ! (MAN_EXPLICIT & man_macros[n->tok].flags))
111 return;
112
113 assert(er < MANDOCERR_FATAL);
114 man_nmsg(man, n, er);
115 }
116
117
118 /*
119 * Rewind scope. If a code "er" != MANDOCERR_MAX has been provided, it
120 * will be used if an explicit block scope is being closed out.
121 */
122 int
123 man_unscope(struct man *man, const struct man_node *to,
124 enum mandocerr er)
125 {
126 struct man_node *n;
127
128 assert(to);
129
130 man->next = MAN_NEXT_SIBLING;
131
132 /* LINTED */
133 while (man->last != to) {
134 /*
135 * Save the parent here, because we may delete the
136 * man->last node in the post-validation phase and reset
137 * it to man->last->parent, causing a step in the closing
138 * out to be lost.
139 */
140 n = man->last->parent;
141 rew_warn(man, man->last, er);
142 if ( ! man_valid_post(man))
143 return(0);
144 man->last = n;
145 assert(man->last);
146 }
147
148 rew_warn(man, man->last, er);
149 if ( ! man_valid_post(man))
150 return(0);
151
152 return(1);
153 }
154
155
156 static enum rew
157 rew_block(enum mant ntok, enum man_type type, const struct man_node *n)
158 {
159
160 if (MAN_BLOCK == type && ntok == n->parent->tok &&
161 MAN_BODY == n->parent->type)
162 return(REW_REWIND);
163 return(ntok == n->tok ? REW_HALT : REW_NOHALT);
164 }
165
166
167 /*
168 * There are three scope levels: scoped to the root (all), scoped to the
169 * section (all less sections), and scoped to subsections (all less
172 static enum rew
173 rew_dohalt(enum mant tok, enum man_type type, const struct man_node *n)
174 {
175 enum rew c;
176
177 /* We cannot progress beyond the root ever. */
178 if (MAN_ROOT == n->type)
179 return(REW_HALT);
180
181 assert(n->parent);
182
183 /* Normal nodes shouldn't go to the level of the root. */
184 if (MAN_ROOT == n->parent->type)
185 return(REW_REWIND);
186
187 /* Already-validated nodes should be closed out. */
188 if (MAN_VALID & n->flags)
189 return(REW_NOHALT);
190
191 /* First: rewind to ourselves. */
192 if (type == n->type && tok == n->tok) {
193 if (MAN_EXPLICIT & man_macros[n->tok].flags)
194 return(REW_HALT);
195 else
196 return(REW_REWIND);
197 }
198
199 /*
200 * Next follow the implicit scope-smashings as defined by man.7:
201 * section, sub-section, etc.
202 */
203
204 switch (tok) {
205 case (MAN_SH):
206 break;
207 case (MAN_SS):
208 /* Rewind to a section, if a block. */
209 if (REW_NOHALT != (c = rew_block(MAN_SH, type, n)))
210 return(c);
211 break;
212 case (MAN_RS):
213 /* Preserve empty paragraphs before RS. */
214 if (0 == n->nchild && (MAN_P == n->tok ||
215 MAN_PP == n->tok || MAN_LP == n->tok))
216 return(REW_HALT);
217 /* Rewind to a subsection, if a block. */
218 if (REW_NOHALT != (c = rew_block(MAN_SS, type, n)))
219 return(c);
220 /* Rewind to a section, if a block. */
221 if (REW_NOHALT != (c = rew_block(MAN_SH, type, n)))
222 return(c);
223 break;
224 default:
225 /* Rewind to an offsetter, if a block. */
226 if (REW_NOHALT != (c = rew_block(MAN_RS, type, n)))
227 return(c);
228 /* Rewind to a subsection, if a block. */
229 if (REW_NOHALT != (c = rew_block(MAN_SS, type, n)))
230 return(c);
231 /* Rewind to a section, if a block. */
232 if (REW_NOHALT != (c = rew_block(MAN_SH, type, n)))
233 return(c);
234 break;
235 }
236
237 return(REW_NOHALT);
238 }
239
240
241 /*
242 * Rewinding entails ascending the parse tree until a coherent point,
243 * for example, the `SH' macro will close out any intervening `SS'
244 * scopes. When a scope is closed, it must be validated and actioned.
245 */
246 static int
247 rew_scope(enum man_type type, struct man *man, enum mant tok)
248 {
249 struct man_node *n;
250 enum rew c;
251
252 /* LINTED */
253 for (n = man->last; n; n = n->parent) {
254 /*
255 * Whether we should stop immediately (REW_HALT), stop
256 * and rewind until this point (REW_REWIND), or keep
257 * rewinding (REW_NOHALT).
258 */
259 c = rew_dohalt(tok, type, n);
260 if (REW_HALT == c)
261 return(1);
262 if (REW_REWIND == c)
263 break;
264 }
265
266 /*
267 * Rewind until the current point. Warn if we're a roff
268 * instruction that's mowing over explicit scopes.
269 */
270 assert(n);
271
272 return(man_unscope(man, n, MANDOCERR_MAX));
273 }
274
275
276 /*
277 * Close out a generic explicit macro.
278 */
279 /* ARGSUSED */
280 int
281 blk_close(MACRO_PROT_ARGS)
282 {
283 enum mant ntok;
284 const struct man_node *nn;
285
286 switch (tok) {
287 case (MAN_RE):
288 ntok = MAN_RS;
289 break;
290 case (MAN_UE):
291 ntok = MAN_UR;
292 break;
293 default:
294 abort();
295 /* NOTREACHED */
296 }
297
298 for (nn = man->last->parent; nn; nn = nn->parent)
299 if (ntok == nn->tok && MAN_BLOCK == nn->type)
300 break;
301
302 if (NULL == nn) {
303 man_pmsg(man, line, ppos, MANDOCERR_NOSCOPE);
304 if ( ! rew_scope(MAN_BLOCK, man, MAN_PP))
305 return(0);
306 } else
307 man_unscope(man, nn, MANDOCERR_MAX);
308
309 return(1);
310 }
311
312
313 /* ARGSUSED */
314 int
315 blk_exp(MACRO_PROT_ARGS)
316 {
317 struct man_node *n;
318 int la;
319 char *p;
320
321 /* Close out prior implicit scopes. */
322
323 if ( ! rew_scope(MAN_BLOCK, man, tok))
324 return(0);
325
326 if ( ! man_block_alloc(man, line, ppos, tok))
327 return(0);
328 if ( ! man_head_alloc(man, line, ppos, tok))
329 return(0);
330
331 for (;;) {
332 la = *pos;
333 if ( ! man_args(man, line, pos, buf, &p))
334 break;
335 if ( ! man_word_alloc(man, line, la, p))
336 return(0);
337 }
338
339 assert(man);
340 assert(tok != MAN_MAX);
341
342 for (n = man->last; n; n = n->parent) {
343 if (n->tok != tok)
344 continue;
345 assert(MAN_HEAD == n->type);
346 man_unscope(man, n, MANDOCERR_MAX);
347 break;
348 }
349
350 return(man_body_alloc(man, line, ppos, tok));
351 }
352
353
354
355 /*
356 * Parse an implicit-block macro. These contain a MAN_HEAD and a
357 * MAN_BODY contained within a MAN_BLOCK. Rules for closing out other
358 * scopes, such as `SH' closing out an `SS', are defined in the rew
359 * routines.
360 */
361 /* ARGSUSED */
362 int
363 blk_imp(MACRO_PROT_ARGS)
364 {
365 int la;
366 char *p;
367 struct man_node *n;
368
369 /* Close out prior scopes. */
370
371 if ( ! rew_scope(MAN_BODY, man, tok))
372 return(0);
373 if ( ! rew_scope(MAN_BLOCK, man, tok))
374 return(0);
375
376 /* Allocate new block & head scope. */
377
378 if ( ! man_block_alloc(man, line, ppos, tok))
379 return(0);
380 if ( ! man_head_alloc(man, line, ppos, tok))
381 return(0);
382
383 n = man->last;
384
385 /* Add line arguments. */
386
387 for (;;) {
388 la = *pos;
389 if ( ! man_args(man, line, pos, buf, &p))
390 break;
391 if ( ! man_word_alloc(man, line, la, p))
392 return(0);
393 }
394
395 /* Close out head and open body (unless MAN_SCOPE). */
396
397 if (MAN_SCOPED & man_macros[tok].flags) {
398 /* If we're forcing scope (`TP'), keep it open. */
399 if (MAN_FSCOPED & man_macros[tok].flags) {
400 man->flags |= MAN_BLINE;
401 return(1);
402 } else if (n == man->last) {
403 man->flags |= MAN_BLINE;
404 return(1);
405 }
406 }
407
408 if ( ! rew_scope(MAN_HEAD, man, tok))
409 return(0);
410 return(man_body_alloc(man, line, ppos, tok));
411 }
412
413
414 /* ARGSUSED */
415 int
416 in_line_eoln(MACRO_PROT_ARGS)
417 {
418 int la;
419 char *p;
420 struct man_node *n;
421
422 if ( ! man_elem_alloc(man, line, ppos, tok))
423 return(0);
424
425 n = man->last;
426
427 for (;;) {
428 la = *pos;
429 if ( ! man_args(man, line, pos, buf, &p))
430 break;
431 if ( ! man_word_alloc(man, line, la, p))
432 return(0);
433 }
434
435 /*
436 * Append MAN_EOS in case the last snipped argument
437 * ends with a dot, e.g. `.IR syslog (3).'
438 */
439
440 if (n != man->last &&
441 mandoc_eos(man->last->string, strlen(man->last->string), 0))
442 man->last->flags |= MAN_EOS;
443
444 /*
445 * If no arguments are specified and this is MAN_SCOPED (i.e.,
446 * next-line scoped), then set our mode to indicate that we're
447 * waiting for terms to load into our context.
448 */
449
450 if (n == man->last && MAN_SCOPED & man_macros[tok].flags) {
451 assert( ! (MAN_NSCOPED & man_macros[tok].flags));
452 man->flags |= MAN_ELINE;
453 return(1);
454 }
455
456 /* Set ignorable context, if applicable. */
457
458 if (MAN_NSCOPED & man_macros[tok].flags) {
459 assert( ! (MAN_SCOPED & man_macros[tok].flags));
460 man->flags |= MAN_ILINE;
461 }
462
463 assert(MAN_ROOT != man->last->type);
464 man->next = MAN_NEXT_SIBLING;
465
466 /*
467 * Rewind our element scope. Note that when TH is pruned, we'll
468 * be back at the root, so make sure that we don't clobber as
469 * its sibling.
470 */
471
472 for ( ; man->last; man->last = man->last->parent) {
473 if (man->last == n)
474 break;
475 if (man->last->type == MAN_ROOT)
476 break;
477 if ( ! man_valid_post(man))
478 return(0);
479 }
480
481 assert(man->last);
482
483 /*
484 * Same here regarding whether we're back at the root.
485 */
486
487 if (man->last->type != MAN_ROOT && ! man_valid_post(man))
488 return(0);
489
490 return(1);
491 }
492
493
494 int
495 man_macroend(struct man *man)
496 {
497
498 return(man_unscope(man, man->first, MANDOCERR_SCOPEEXIT));
499 }
500
501 static int
502 man_args(struct man *man, int line, int *pos, char *buf, char **v)
503 {
504 char *start;
505
506 assert(*pos);
507 *v = start = buf + *pos;
508 assert(' ' != *start);
509
510 if ('\0' == *start)
511 return(0);
512
513 *v = mandoc_getarg(man->parse, v, line, pos);
514 return(1);
515 }
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