Annotation of src/usr.bin/mandoc/mdoc_argv.c, Revision 1.21
1.20 schwarze 1: /* $Id: mdoc_argv.c,v 1.19 2009/12/22 23:58:00 schwarze Exp $ */
1.1 kristaps 2: /*
1.2 schwarze 3: * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
1.1 kristaps 4: *
5: * Permission to use, copy, modify, and distribute this software for any
1.2 schwarze 6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 8: *
1.2 schwarze 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.
1.1 kristaps 16: */
17: #include <sys/types.h>
18:
19: #include <assert.h>
20: #include <ctype.h>
21: #include <stdlib.h>
22: #include <stdio.h>
23: #include <string.h>
24:
25: #include "libmdoc.h"
1.19 schwarze 26: #include "libmandoc.h"
1.1 kristaps 27:
28: /*
29: * Routines to parse arguments of macros. Arguments follow the syntax
30: * of `-arg [val [valN...]]'. Arguments come in all types: quoted
31: * arguments, multiple arguments per value, no-value arguments, etc.
32: *
33: * There's no limit to the number or arguments that may be allocated.
34: */
35:
36: #define ARGV_NONE (1 << 0)
37: #define ARGV_SINGLE (1 << 1)
38: #define ARGV_MULTI (1 << 2)
39: #define ARGV_OPT_SINGLE (1 << 3)
40:
41: #define MULTI_STEP 5
42:
43: static int argv_a2arg(int, const char *);
44: static int args(struct mdoc *, int, int *,
45: char *, int, char **);
46: static int argv(struct mdoc *, int,
47: struct mdoc_argv *, int *, char *);
48: static int argv_single(struct mdoc *, int,
49: struct mdoc_argv *, int *, char *);
50: static int argv_opt_single(struct mdoc *, int,
51: struct mdoc_argv *, int *, char *);
52: static int argv_multi(struct mdoc *, int,
53: struct mdoc_argv *, int *, char *);
54:
55: /* Per-argument flags. */
56:
57: static int mdoc_argvflags[MDOC_ARG_MAX] = {
58: ARGV_NONE, /* MDOC_Split */
59: ARGV_NONE, /* MDOC_Nosplit */
60: ARGV_NONE, /* MDOC_Ragged */
61: ARGV_NONE, /* MDOC_Unfilled */
62: ARGV_NONE, /* MDOC_Literal */
1.17 schwarze 63: ARGV_SINGLE, /* MDOC_File */
1.15 schwarze 64: ARGV_OPT_SINGLE, /* MDOC_Offset */
1.1 kristaps 65: ARGV_NONE, /* MDOC_Bullet */
66: ARGV_NONE, /* MDOC_Dash */
67: ARGV_NONE, /* MDOC_Hyphen */
68: ARGV_NONE, /* MDOC_Item */
69: ARGV_NONE, /* MDOC_Enum */
70: ARGV_NONE, /* MDOC_Tag */
71: ARGV_NONE, /* MDOC_Diag */
72: ARGV_NONE, /* MDOC_Hang */
73: ARGV_NONE, /* MDOC_Ohang */
74: ARGV_NONE, /* MDOC_Inset */
75: ARGV_MULTI, /* MDOC_Column */
76: ARGV_SINGLE, /* MDOC_Width */
77: ARGV_NONE, /* MDOC_Compact */
1.14 schwarze 78: ARGV_NONE, /* MDOC_Std */
1.1 kristaps 79: ARGV_NONE, /* MDOC_Filled */
80: ARGV_NONE, /* MDOC_Words */
81: ARGV_NONE, /* MDOC_Emphasis */
82: ARGV_NONE, /* MDOC_Symbolic */
83: ARGV_NONE /* MDOC_Symbolic */
84: };
85:
86: static int mdoc_argflags[MDOC_MAX] = {
1.3 schwarze 87: 0, /* Ap */
1.1 kristaps 88: 0, /* Dd */
89: 0, /* Dt */
90: 0, /* Os */
1.12 schwarze 91: 0, /* Sh */
92: 0, /* Ss */
1.1 kristaps 93: ARGS_DELIM, /* Pp */
94: ARGS_DELIM, /* D1 */
1.12 schwarze 95: ARGS_DELIM, /* Dl */
1.1 kristaps 96: 0, /* Bd */
97: 0, /* Ed */
1.12 schwarze 98: 0, /* Bl */
1.1 kristaps 99: 0, /* El */
100: 0, /* It */
101: ARGS_DELIM, /* Ad */
102: ARGS_DELIM, /* An */
1.12 schwarze 103: ARGS_DELIM, /* Ar */
104: 0, /* Cd */
1.1 kristaps 105: ARGS_DELIM, /* Cm */
106: ARGS_DELIM, /* Dv */
107: ARGS_DELIM, /* Er */
108: ARGS_DELIM, /* Ev */
109: 0, /* Ex */
1.12 schwarze 110: ARGS_DELIM, /* Fa */
1.1 kristaps 111: 0, /* Fd */
112: ARGS_DELIM, /* Fl */
1.12 schwarze 113: ARGS_DELIM, /* Fn */
114: ARGS_DELIM, /* Ft */
1.1 kristaps 115: ARGS_DELIM, /* Ic */
116: 0, /* In */
1.12 schwarze 117: ARGS_DELIM, /* Li */
118: 0, /* Nd */
1.1 kristaps 119: ARGS_DELIM, /* Nm */
120: ARGS_DELIM, /* Op */
121: 0, /* Ot */
122: ARGS_DELIM, /* Pa */
123: 0, /* Rv */
1.12 schwarze 124: ARGS_DELIM, /* St */
1.1 kristaps 125: ARGS_DELIM, /* Va */
126: ARGS_DELIM, /* Vt */
127: ARGS_DELIM, /* Xr */
1.12 schwarze 128: 0, /* %A */
129: 0, /* %B */
130: 0, /* %D */
131: 0, /* %I */
132: 0, /* %J */
133: 0, /* %N */
134: 0, /* %O */
135: 0, /* %P */
136: 0, /* %R */
137: 0, /* %T */
138: 0, /* %V */
1.1 kristaps 139: ARGS_DELIM, /* Ac */
140: 0, /* Ao */
141: ARGS_DELIM, /* Aq */
142: ARGS_DELIM, /* At */
143: ARGS_DELIM, /* Bc */
144: 0, /* Bf */
145: 0, /* Bo */
146: ARGS_DELIM, /* Bq */
147: ARGS_DELIM, /* Bsx */
148: ARGS_DELIM, /* Bx */
149: 0, /* Db */
150: ARGS_DELIM, /* Dc */
151: 0, /* Do */
152: ARGS_DELIM, /* Dq */
153: ARGS_DELIM, /* Ec */
154: 0, /* Ef */
155: ARGS_DELIM, /* Em */
156: 0, /* Eo */
157: ARGS_DELIM, /* Fx */
158: ARGS_DELIM, /* Ms */
159: ARGS_DELIM, /* No */
160: ARGS_DELIM, /* Ns */
161: ARGS_DELIM, /* Nx */
162: ARGS_DELIM, /* Ox */
163: ARGS_DELIM, /* Pc */
164: ARGS_DELIM, /* Pf */
165: 0, /* Po */
166: ARGS_DELIM, /* Pq */
167: ARGS_DELIM, /* Qc */
168: ARGS_DELIM, /* Ql */
169: 0, /* Qo */
170: ARGS_DELIM, /* Qq */
171: 0, /* Re */
172: 0, /* Rs */
173: ARGS_DELIM, /* Sc */
174: 0, /* So */
175: ARGS_DELIM, /* Sq */
176: 0, /* Sm */
177: ARGS_DELIM, /* Sx */
1.12 schwarze 178: ARGS_DELIM, /* Sy */
1.1 kristaps 179: ARGS_DELIM, /* Tn */
180: ARGS_DELIM, /* Ux */
181: ARGS_DELIM, /* Xc */
182: 0, /* Xo */
1.12 schwarze 183: 0, /* Fo */
1.1 kristaps 184: 0, /* Fc */
185: 0, /* Oo */
186: ARGS_DELIM, /* Oc */
187: 0, /* Bk */
188: 0, /* Ek */
189: 0, /* Bt */
190: 0, /* Hf */
191: 0, /* Fr */
192: 0, /* Ud */
193: 0, /* Lb */
194: ARGS_DELIM, /* Lp */
1.12 schwarze 195: ARGS_DELIM, /* Lk */
196: ARGS_DELIM, /* Mt */
1.1 kristaps 197: ARGS_DELIM, /* Brq */
198: 0, /* Bro */
199: ARGS_DELIM, /* Brc */
1.12 schwarze 200: 0, /* %C */
1.1 kristaps 201: 0, /* Es */
202: 0, /* En */
203: 0, /* Dx */
1.12 schwarze 204: 0, /* %Q */
1.10 schwarze 205: 0, /* br */
206: 0, /* sp */
1.18 schwarze 207: 0, /* %U */
1.21 ! schwarze 208: 0, /* eos */
1.1 kristaps 209: };
210:
211:
212: /*
213: * Parse an argument from line text. This comes in the form of -key
214: * [value0...], which may either have a single mandatory value, at least
215: * one mandatory value, an optional single value, or no value.
216: */
217: int
1.6 schwarze 218: mdoc_argv(struct mdoc *m, int line, int tok,
1.1 kristaps 219: struct mdoc_arg **v, int *pos, char *buf)
220: {
221: char *p, sv;
222: struct mdoc_argv tmp;
223: struct mdoc_arg *arg;
224:
225: if (0 == buf[*pos])
226: return(ARGV_EOLN);
227:
228: assert(' ' != buf[*pos]);
229:
230: /* Parse through to the first unescaped space. */
231:
232: p = &buf[++(*pos)];
233:
234: assert(*pos > 0);
235:
236: /* LINTED */
237: while (buf[*pos]) {
238: if (' ' == buf[*pos])
239: if ('\\' != buf[*pos - 1])
240: break;
241: (*pos)++;
242: }
243:
244: /* XXX - save zeroed byte, if not an argument. */
245:
246: sv = 0;
247: if (buf[*pos]) {
248: sv = buf[*pos];
249: buf[(*pos)++] = 0;
250: }
251:
252: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
253: tmp.line = line;
254: tmp.pos = *pos;
255:
256: /* See if our token accepts the argument. */
257:
258: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
259: /* XXX - restore saved zeroed byte. */
260: if (sv)
261: buf[*pos - 1] = sv;
262: return(ARGV_WORD);
263: }
264:
265: while (buf[*pos] && ' ' == buf[*pos])
266: (*pos)++;
267:
1.6 schwarze 268: if ( ! argv(m, line, &tmp, pos, buf))
1.1 kristaps 269: return(ARGV_ERROR);
270:
1.19 schwarze 271: if (NULL == (arg = *v))
272: arg = *v = mandoc_calloc(1, sizeof(struct mdoc_arg));
1.1 kristaps 273:
274: arg->argc++;
1.19 schwarze 275: arg->argv = mandoc_realloc
276: (arg->argv, arg->argc * sizeof(struct mdoc_argv));
1.1 kristaps 277:
278: (void)memcpy(&arg->argv[(int)arg->argc - 1],
279: &tmp, sizeof(struct mdoc_argv));
280:
281: return(ARGV_ARG);
282: }
283:
284:
285: void
286: mdoc_argv_free(struct mdoc_arg *p)
287: {
288: int i, j;
289:
290: if (NULL == p)
291: return;
292:
293: if (p->refcnt) {
294: --(p->refcnt);
295: if (p->refcnt)
296: return;
297: }
298: assert(p->argc);
299:
300: /* LINTED */
301: for (i = 0; i < (int)p->argc; i++) {
302: if (0 == p->argv[i].sz)
303: continue;
1.15 schwarze 304: if (NULL == p->argv[i].value)
305: continue;
306:
1.1 kristaps 307: /* LINTED */
308: for (j = 0; j < (int)p->argv[i].sz; j++)
1.15 schwarze 309: if (p->argv[i].value[j])
310: free(p->argv[i].value[j]);
1.1 kristaps 311:
312: free(p->argv[i].value);
313: }
314:
315: free(p->argv);
316: free(p);
317: }
318:
319:
320: int
1.13 schwarze 321: mdoc_zargs(struct mdoc *m, int line, int *pos,
322: char *buf, int flags, char **v)
1.12 schwarze 323: {
324:
1.13 schwarze 325: return(args(m, line, pos, buf, flags, v));
1.12 schwarze 326: }
327:
328:
329: int
1.8 schwarze 330: mdoc_args(struct mdoc *m, int line,
1.1 kristaps 331: int *pos, char *buf, int tok, char **v)
332: {
333: int fl, c, i;
334: struct mdoc_node *n;
335:
336: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
337:
1.12 schwarze 338: if (MDOC_It != tok)
339: return(args(m, line, pos, buf, fl, v));
340:
1.1 kristaps 341: /*
1.12 schwarze 342: * The `It' macro is a special case, as it acquires parameters from its
343: * parent `Bl' context, specifically, we're concerned with -column.
1.1 kristaps 344: */
345:
1.12 schwarze 346: for (n = m->last; n; n = n->parent)
347: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
348: break;
1.1 kristaps 349:
1.12 schwarze 350: assert(n);
351: c = (int)(n->args ? n->args->argc : 0);
352: assert(c > 0);
1.1 kristaps 353:
1.12 schwarze 354: /* LINTED */
355: for (i = 0; i < c; i++) {
356: if (MDOC_Column != n->args->argv[i].arg)
357: continue;
358: fl |= ARGS_TABSEP;
359: fl &= ~ARGS_DELIM;
1.1 kristaps 360: break;
361: }
362:
1.8 schwarze 363: return(args(m, line, pos, buf, fl, v));
1.1 kristaps 364: }
365:
366:
367: static int
1.12 schwarze 368: args(struct mdoc *m, int line, int *pos,
1.11 schwarze 369: char *buf, int fl, char **v)
1.1 kristaps 370: {
371: int i;
372: char *p, *pp;
373:
1.13 schwarze 374: /*
375: * Parse out the terms (like `val' in `.Xx -arg val' or simply
376: * `.Xx val'), which can have all sorts of properties:
377: *
378: * ARGS_DELIM: use special handling if encountering trailing
379: * delimiters in the form of [[::delim::][ ]+]+.
380: *
381: * ARGS_NOWARN: don't post warnings. This is only used when
382: * re-parsing delimiters, as the warnings have already been
383: * posted.
384: *
385: * ARGS_TABSEP: use special handling for tab/`Ta' separated
386: * phrases like in `Bl -column'.
387: */
388:
1.12 schwarze 389: assert(*pos);
390: assert(' ' != buf[*pos]);
1.1 kristaps 391:
392: if (0 == buf[*pos])
393: return(ARGS_EOLN);
394:
395: /*
396: * If the first character is a delimiter and we're to look for
397: * delimited strings, then pass down the buffer seeing if it
398: * follows the pattern of [[::delim::][ ]+]+.
399: */
400:
1.20 schwarze 401: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos]) > 1) {
1.1 kristaps 402: for (i = *pos; buf[i]; ) {
1.20 schwarze 403: if ( mdoc_iscdelim(buf[i]) < 2)
1.1 kristaps 404: break;
405: i++;
406: if (0 == buf[i] || ' ' != buf[i])
407: break;
408: i++;
409: while (buf[i] && ' ' == buf[i])
410: i++;
411: }
1.12 schwarze 412:
1.1 kristaps 413: if (0 == buf[i]) {
414: *v = &buf[*pos];
1.13 schwarze 415: if (' ' != buf[i - 1])
416: return(ARGS_PUNCT);
417: if (ARGS_NOWARN & fl)
418: return(ARGS_PUNCT);
419: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
420: return(ARGS_ERROR);
1.1 kristaps 421: return(ARGS_PUNCT);
422: }
423: }
424:
1.12 schwarze 425: *v = &buf[*pos];
1.1 kristaps 426:
1.12 schwarze 427: /*
428: * First handle TABSEP items, restricted to `Bl -column'. This
429: * ignores conventional token parsing and instead uses tabs or
430: * `Ta' macros to separate phrases. Phrases are parsed again
431: * for arguments at a later phase.
432: */
433:
434: if (ARGS_TABSEP & fl) {
435: /* Scan ahead to tab (can't be escaped). */
436: p = strchr(*v, '\t');
437:
438: /* Scan ahead to unescaped `Ta'. */
439: for (pp = *v; ; pp++) {
440: if (NULL == (pp = strstr(pp, "Ta")))
441: break;
442: if (pp > *v && ' ' != *(pp - 1))
443: continue;
444: if (' ' == *(pp + 2) || 0 == *(pp + 2))
445: break;
446: }
1.1 kristaps 447:
448: /*
1.12 schwarze 449: * Adjust new-buffer position to be beyond delimiter
450: * mark (e.g., Ta -> end + 2).
1.1 kristaps 451: */
1.12 schwarze 452: if (p && pp) {
453: *pos += pp < p ? 2 : 1;
454: p = pp < p ? pp : p;
455: } else if (p && ! pp) {
456: *pos += 1;
457: } else if (pp && ! p) {
458: p = pp;
459: *pos += 2;
460: } else
461: p = strchr(*v, 0);
1.1 kristaps 462:
1.12 schwarze 463: /* Whitespace check for eoln case... */
1.13 schwarze 464: if (0 == *p && ' ' == *(p - 1) && ! (ARGS_NOWARN & fl))
1.12 schwarze 465: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
466: return(ARGS_ERROR);
467:
468: *pos += (int)(p - *v);
469:
470: /* Strip delimiter's preceding whitespace. */
471: pp = p - 1;
472: while (pp > *v && ' ' == *pp) {
473: if (pp > *v && '\\' == *(pp - 1))
474: break;
475: pp--;
476: }
477: *(pp + 1) = 0;
1.1 kristaps 478:
1.12 schwarze 479: /* Strip delimiter's proceeding whitespace. */
480: for (pp = &buf[*pos]; ' ' == *pp; pp++, (*pos)++)
481: /* Skip ahead. */ ;
1.1 kristaps 482:
1.12 schwarze 483: return(ARGS_PHRASE);
484: }
1.1 kristaps 485:
1.12 schwarze 486: /*
487: * Process a quoted literal. A quote begins with a double-quote
488: * and ends with a double-quote NOT preceded by a double-quote.
489: * Whitespace is NOT involved in literal termination.
490: */
1.1 kristaps 491:
1.12 schwarze 492: if ('\"' == buf[*pos]) {
493: *v = &buf[++(*pos)];
1.1 kristaps 494:
1.12 schwarze 495: for ( ; buf[*pos]; (*pos)++) {
496: if ('\"' != buf[*pos])
497: continue;
498: if ('\"' != buf[*pos + 1])
499: break;
500: (*pos)++;
501: }
1.1 kristaps 502:
1.12 schwarze 503: if (0 == buf[*pos]) {
1.13 schwarze 504: if (ARGS_NOWARN & fl)
505: return(ARGS_QWORD);
1.12 schwarze 506: if ( ! mdoc_pwarn(m, line, *pos, EQUOTTERM))
507: return(ARGS_ERROR);
508: return(ARGS_QWORD);
509: }
1.1 kristaps 510:
1.12 schwarze 511: buf[(*pos)++] = 0;
1.1 kristaps 512:
513: if (0 == buf[*pos])
1.12 schwarze 514: return(ARGS_QWORD);
1.1 kristaps 515:
1.12 schwarze 516: while (' ' == buf[*pos])
517: (*pos)++;
1.1 kristaps 518:
1.13 schwarze 519: if (0 == buf[*pos] && ! (ARGS_NOWARN & fl))
1.12 schwarze 520: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
521: return(ARGS_ERROR);
1.1 kristaps 522:
1.12 schwarze 523: return(ARGS_QWORD);
1.1 kristaps 524: }
525:
1.12 schwarze 526: /*
527: * A non-quoted term progresses until either the end of line or
528: * a non-escaped whitespace.
1.1 kristaps 529: */
530:
1.12 schwarze 531: for ( ; buf[*pos]; (*pos)++)
532: if (' ' == buf[*pos] && '\\' != buf[*pos - 1])
533: break;
1.1 kristaps 534:
1.12 schwarze 535: if (0 == buf[*pos])
536: return(ARGS_WORD);
1.1 kristaps 537:
538: buf[(*pos)++] = 0;
539:
1.12 schwarze 540: while (' ' == buf[*pos])
1.1 kristaps 541: (*pos)++;
542:
1.13 schwarze 543: if (0 == buf[*pos] && ! (ARGS_NOWARN & fl))
1.12 schwarze 544: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
545: return(ARGS_ERROR);
1.1 kristaps 546:
1.12 schwarze 547: return(ARGS_WORD);
1.1 kristaps 548: }
549:
550:
551: static int
1.16 schwarze 552: argv_a2arg(int tok, const char *p)
1.1 kristaps 553: {
554:
555: /*
556: * Parse an argument identifier from its text. XXX - this
557: * should really be table-driven to clarify the code.
558: *
559: * If you add an argument to the list, make sure that you
560: * register it here with its one or more macros!
561: */
562:
563: switch (tok) {
564: case (MDOC_An):
1.16 schwarze 565: if (0 == strcmp(p, "split"))
1.1 kristaps 566: return(MDOC_Split);
1.16 schwarze 567: else if (0 == strcmp(p, "nosplit"))
1.1 kristaps 568: return(MDOC_Nosplit);
569: break;
570:
571: case (MDOC_Bd):
1.16 schwarze 572: if (0 == strcmp(p, "ragged"))
1.1 kristaps 573: return(MDOC_Ragged);
1.16 schwarze 574: else if (0 == strcmp(p, "unfilled"))
1.1 kristaps 575: return(MDOC_Unfilled);
1.16 schwarze 576: else if (0 == strcmp(p, "filled"))
1.1 kristaps 577: return(MDOC_Filled);
1.16 schwarze 578: else if (0 == strcmp(p, "literal"))
1.1 kristaps 579: return(MDOC_Literal);
1.16 schwarze 580: else if (0 == strcmp(p, "file"))
1.1 kristaps 581: return(MDOC_File);
1.16 schwarze 582: else if (0 == strcmp(p, "offset"))
1.1 kristaps 583: return(MDOC_Offset);
1.16 schwarze 584: else if (0 == strcmp(p, "compact"))
1.1 kristaps 585: return(MDOC_Compact);
1.17 schwarze 586: else if (0 == strcmp(p, "centered"))
587: return(MDOC_Centred);
1.1 kristaps 588: break;
589:
590: case (MDOC_Bf):
1.16 schwarze 591: if (0 == strcmp(p, "emphasis"))
1.1 kristaps 592: return(MDOC_Emphasis);
1.16 schwarze 593: else if (0 == strcmp(p, "literal"))
1.1 kristaps 594: return(MDOC_Literal);
1.16 schwarze 595: else if (0 == strcmp(p, "symbolic"))
1.1 kristaps 596: return(MDOC_Symbolic);
597: break;
598:
599: case (MDOC_Bk):
1.16 schwarze 600: if (0 == strcmp(p, "words"))
1.1 kristaps 601: return(MDOC_Words);
602: break;
603:
604: case (MDOC_Bl):
1.16 schwarze 605: if (0 == strcmp(p, "bullet"))
1.1 kristaps 606: return(MDOC_Bullet);
1.16 schwarze 607: else if (0 == strcmp(p, "dash"))
1.1 kristaps 608: return(MDOC_Dash);
1.16 schwarze 609: else if (0 == strcmp(p, "hyphen"))
1.1 kristaps 610: return(MDOC_Hyphen);
1.16 schwarze 611: else if (0 == strcmp(p, "item"))
1.1 kristaps 612: return(MDOC_Item);
1.16 schwarze 613: else if (0 == strcmp(p, "enum"))
1.1 kristaps 614: return(MDOC_Enum);
1.16 schwarze 615: else if (0 == strcmp(p, "tag"))
1.1 kristaps 616: return(MDOC_Tag);
1.16 schwarze 617: else if (0 == strcmp(p, "diag"))
1.1 kristaps 618: return(MDOC_Diag);
1.16 schwarze 619: else if (0 == strcmp(p, "hang"))
1.1 kristaps 620: return(MDOC_Hang);
1.16 schwarze 621: else if (0 == strcmp(p, "ohang"))
1.1 kristaps 622: return(MDOC_Ohang);
1.16 schwarze 623: else if (0 == strcmp(p, "inset"))
1.1 kristaps 624: return(MDOC_Inset);
1.16 schwarze 625: else if (0 == strcmp(p, "column"))
1.1 kristaps 626: return(MDOC_Column);
1.16 schwarze 627: else if (0 == strcmp(p, "width"))
1.1 kristaps 628: return(MDOC_Width);
1.16 schwarze 629: else if (0 == strcmp(p, "offset"))
1.1 kristaps 630: return(MDOC_Offset);
1.16 schwarze 631: else if (0 == strcmp(p, "compact"))
1.1 kristaps 632: return(MDOC_Compact);
1.16 schwarze 633: else if (0 == strcmp(p, "nested"))
1.1 kristaps 634: return(MDOC_Nested);
635: break;
636:
637: case (MDOC_Rv):
638: /* FALLTHROUGH */
639: case (MDOC_Ex):
1.16 schwarze 640: if (0 == strcmp(p, "std"))
1.1 kristaps 641: return(MDOC_Std);
642: break;
643: default:
644: break;
645: }
646:
647: return(MDOC_ARG_MAX);
648: }
649:
650:
651: static int
1.6 schwarze 652: argv_multi(struct mdoc *m, int line,
1.1 kristaps 653: struct mdoc_argv *v, int *pos, char *buf)
654: {
1.4 schwarze 655: int c;
1.1 kristaps 656: char *p;
657:
658: for (v->sz = 0; ; v->sz++) {
659: if ('-' == buf[*pos])
660: break;
1.12 schwarze 661: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 662: if (ARGS_ERROR == c)
663: return(0);
664: else if (ARGS_EOLN == c)
665: break;
666:
1.19 schwarze 667: if (0 == v->sz % MULTI_STEP)
668: v->value = mandoc_realloc(v->value,
1.1 kristaps 669: (v->sz + MULTI_STEP) * sizeof(char *));
1.19 schwarze 670:
671: v->value[(int)v->sz] = mandoc_strdup(p);
1.1 kristaps 672: }
673:
1.4 schwarze 674: return(1);
1.1 kristaps 675: }
676:
677:
678: static int
1.6 schwarze 679: argv_opt_single(struct mdoc *m, int line,
1.1 kristaps 680: struct mdoc_argv *v, int *pos, char *buf)
681: {
682: int c;
683: char *p;
684:
685: if ('-' == buf[*pos])
686: return(1);
687:
1.12 schwarze 688: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 689: if (ARGS_ERROR == c)
690: return(0);
691: if (ARGS_EOLN == c)
692: return(1);
693:
694: v->sz = 1;
1.19 schwarze 695: v->value = mandoc_malloc(sizeof(char *));
696: v->value[0] = mandoc_strdup(p);
1.1 kristaps 697:
698: return(1);
699: }
700:
701:
702: /*
703: * Parse a single, mandatory value from the stream.
704: */
705: static int
1.6 schwarze 706: argv_single(struct mdoc *m, int line,
1.1 kristaps 707: struct mdoc_argv *v, int *pos, char *buf)
708: {
709: int c, ppos;
710: char *p;
711:
712: ppos = *pos;
713:
1.12 schwarze 714: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 715: if (ARGS_ERROR == c)
716: return(0);
717: if (ARGS_EOLN == c)
1.7 schwarze 718: return(mdoc_perr(m, line, ppos, EARGVAL));
1.1 kristaps 719:
720: v->sz = 1;
1.19 schwarze 721: v->value = mandoc_malloc(sizeof(char *));
722: v->value[0] = mandoc_strdup(p);
1.1 kristaps 723:
724: return(1);
725: }
726:
727:
728: /*
729: * Determine rules for parsing arguments. Arguments can either accept
730: * no parameters, an optional single parameter, one parameter, or
731: * multiple parameters.
732: */
733: static int
734: argv(struct mdoc *mdoc, int line,
735: struct mdoc_argv *v, int *pos, char *buf)
736: {
737:
738: v->sz = 0;
739: v->value = NULL;
740:
741: switch (mdoc_argvflags[v->arg]) {
742: case (ARGV_SINGLE):
743: return(argv_single(mdoc, line, v, pos, buf));
744: case (ARGV_MULTI):
745: return(argv_multi(mdoc, line, v, pos, buf));
746: case (ARGV_OPT_SINGLE):
747: return(argv_opt_single(mdoc, line, v, pos, buf));
748: default:
749: /* ARGV_NONE */
750: break;
751: }
752:
753: return(1);
754: }
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