Annotation of mandoc/mdoc_argv.c, Revision 1.32
1.32 ! kristaps 1: /* $Id: mdoc_argv.c,v 1.31 2009/10/28 19:21:59 kristaps Exp $ */
1.1 kristaps 2: /*
1.4 kristaps 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
1.3 kristaps 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: *
1.3 kristaps 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"
1.31 kristaps 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 *);
1.2 kristaps 54:
1.1 kristaps 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 */
1.29 kristaps 63: ARGV_SINGLE, /* MDOC_File */
1.26 kristaps 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 */
1.25 kristaps 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] = {
1.5 kristaps 87: 0, /* Ap */
1.1 kristaps 88: 0, /* Dd */
89: 0, /* Dt */
90: 0, /* Os */
1.17 kristaps 91: 0, /* Sh */
92: 0, /* Ss */
1.1 kristaps 93: ARGS_DELIM, /* Pp */
94: ARGS_DELIM, /* D1 */
1.17 kristaps 95: ARGS_DELIM, /* Dl */
1.1 kristaps 96: 0, /* Bd */
97: 0, /* Ed */
1.17 kristaps 98: 0, /* Bl */
1.1 kristaps 99: 0, /* El */
100: 0, /* It */
101: ARGS_DELIM, /* Ad */
102: ARGS_DELIM, /* An */
1.17 kristaps 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 */
1.17 kristaps 110: ARGS_DELIM, /* Fa */
1.1 kristaps 111: 0, /* Fd */
112: ARGS_DELIM, /* Fl */
1.17 kristaps 113: ARGS_DELIM, /* Fn */
114: ARGS_DELIM, /* Ft */
1.1 kristaps 115: ARGS_DELIM, /* Ic */
116: 0, /* In */
1.17 kristaps 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 */
1.15 kristaps 124: ARGS_DELIM, /* St */
1.1 kristaps 125: ARGS_DELIM, /* Va */
126: ARGS_DELIM, /* Vt */
127: ARGS_DELIM, /* Xr */
1.17 kristaps 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 */
1.17 kristaps 178: ARGS_DELIM, /* Sy */
1.1 kristaps 179: ARGS_DELIM, /* Tn */
180: ARGS_DELIM, /* Ux */
181: ARGS_DELIM, /* Xc */
182: 0, /* Xo */
1.17 kristaps 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 */
1.17 kristaps 195: ARGS_DELIM, /* Lk */
196: ARGS_DELIM, /* Mt */
1.1 kristaps 197: ARGS_DELIM, /* Brq */
198: 0, /* Bro */
199: ARGS_DELIM, /* Brc */
1.17 kristaps 200: 0, /* %C */
1.1 kristaps 201: 0, /* Es */
202: 0, /* En */
203: 0, /* Dx */
1.17 kristaps 204: 0, /* %Q */
1.14 kristaps 205: 0, /* br */
206: 0, /* sp */
1.30 kristaps 207: 0, /* %U */
1.1 kristaps 208: };
209:
210:
211: /*
212: * Parse an argument from line text. This comes in the form of -key
213: * [value0...], which may either have a single mandatory value, at least
214: * one mandatory value, an optional single value, or no value.
215: */
216: int
1.11 kristaps 217: mdoc_argv(struct mdoc *m, int line, int tok,
1.1 kristaps 218: struct mdoc_arg **v, int *pos, char *buf)
219: {
220: char *p, sv;
221: struct mdoc_argv tmp;
222: struct mdoc_arg *arg;
223:
224: if (0 == buf[*pos])
225: return(ARGV_EOLN);
226:
227: assert(' ' != buf[*pos]);
228:
229: /* Parse through to the first unescaped space. */
230:
231: p = &buf[++(*pos)];
232:
233: assert(*pos > 0);
234:
235: /* LINTED */
236: while (buf[*pos]) {
237: if (' ' == buf[*pos])
238: if ('\\' != buf[*pos - 1])
239: break;
240: (*pos)++;
241: }
242:
243: /* XXX - save zeroed byte, if not an argument. */
244:
245: sv = 0;
246: if (buf[*pos]) {
247: sv = buf[*pos];
248: buf[(*pos)++] = 0;
249: }
250:
251: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
252: tmp.line = line;
253: tmp.pos = *pos;
254:
255: /* See if our token accepts the argument. */
256:
257: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
258: /* XXX - restore saved zeroed byte. */
259: if (sv)
260: buf[*pos - 1] = sv;
261: return(ARGV_WORD);
262: }
263:
264: while (buf[*pos] && ' ' == buf[*pos])
265: (*pos)++;
266:
1.11 kristaps 267: if ( ! argv(m, line, &tmp, pos, buf))
1.1 kristaps 268: return(ARGV_ERROR);
269:
1.31 kristaps 270: if (NULL == (arg = *v))
1.32 ! kristaps 271: arg = *v = mandoc_calloc(1, sizeof(struct mdoc_arg));
1.1 kristaps 272:
273: arg->argc++;
1.31 kristaps 274: arg->argv = mandoc_realloc
275: (arg->argv, arg->argc * sizeof(struct mdoc_argv));
1.2 kristaps 276:
1.1 kristaps 277: (void)memcpy(&arg->argv[(int)arg->argc - 1],
278: &tmp, sizeof(struct mdoc_argv));
279:
280: return(ARGV_ARG);
281: }
282:
283:
284: void
285: mdoc_argv_free(struct mdoc_arg *p)
286: {
287: int i, j;
288:
289: if (NULL == p)
290: return;
291:
292: if (p->refcnt) {
293: --(p->refcnt);
294: if (p->refcnt)
295: return;
296: }
297: assert(p->argc);
298:
299: /* LINTED */
300: for (i = 0; i < (int)p->argc; i++) {
301: if (0 == p->argv[i].sz)
302: continue;
1.26 kristaps 303: if (NULL == p->argv[i].value)
304: continue;
305:
1.1 kristaps 306: /* LINTED */
307: for (j = 0; j < (int)p->argv[i].sz; j++)
1.26 kristaps 308: if (p->argv[i].value[j])
309: free(p->argv[i].value[j]);
1.1 kristaps 310:
311: free(p->argv[i].value);
312: }
313:
314: free(p->argv);
315: free(p);
316: }
317:
318:
319: int
1.23 kristaps 320: mdoc_zargs(struct mdoc *m, int line, int *pos,
321: char *buf, int flags, char **v)
1.19 kristaps 322: {
323:
1.23 kristaps 324: return(args(m, line, pos, buf, flags, v));
1.19 kristaps 325: }
326:
327:
328: int
1.11 kristaps 329: mdoc_args(struct mdoc *m, int line,
1.1 kristaps 330: int *pos, char *buf, int tok, char **v)
331: {
332: int fl, c, i;
333: struct mdoc_node *n;
334:
335: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
336:
1.17 kristaps 337: if (MDOC_It != tok)
338: return(args(m, line, pos, buf, fl, v));
339:
1.1 kristaps 340: /*
1.17 kristaps 341: * The `It' macro is a special case, as it acquires parameters from its
342: * parent `Bl' context, specifically, we're concerned with -column.
1.1 kristaps 343: */
344:
1.17 kristaps 345: for (n = m->last; n; n = n->parent)
346: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
347: break;
1.1 kristaps 348:
1.17 kristaps 349: assert(n);
350: c = (int)(n->args ? n->args->argc : 0);
351: assert(c > 0);
1.1 kristaps 352:
1.17 kristaps 353: /* LINTED */
354: for (i = 0; i < c; i++) {
355: if (MDOC_Column != n->args->argv[i].arg)
356: continue;
357: fl |= ARGS_TABSEP;
358: fl &= ~ARGS_DELIM;
1.1 kristaps 359: break;
360: }
361:
1.11 kristaps 362: return(args(m, line, pos, buf, fl, v));
1.1 kristaps 363: }
364:
365:
366: static int
1.13 kristaps 367: args(struct mdoc *m, int line, int *pos,
368: char *buf, int fl, char **v)
1.1 kristaps 369: {
1.21 kristaps 370: int i;
1.1 kristaps 371: char *p, *pp;
372:
1.24 kristaps 373: /*
374: * Parse out the terms (like `val' in `.Xx -arg val' or simply
375: * `.Xx val'), which can have all sorts of properties:
376: *
377: * ARGS_DELIM: use special handling if encountering trailing
378: * delimiters in the form of [[::delim::][ ]+]+.
379: *
380: * ARGS_NOWARN: don't post warnings. This is only used when
381: * re-parsing delimiters, as the warnings have already been
382: * posted.
383: *
384: * ARGS_TABSEP: use special handling for tab/`Ta' separated
385: * phrases like in `Bl -column'.
386: */
387:
1.17 kristaps 388: assert(*pos);
389: assert(' ' != buf[*pos]);
1.1 kristaps 390:
391: if (0 == buf[*pos])
392: return(ARGS_EOLN);
393:
394: /*
395: * If the first character is a delimiter and we're to look for
396: * delimited strings, then pass down the buffer seeing if it
397: * follows the pattern of [[::delim::][ ]+]+.
398: */
399:
400: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
401: for (i = *pos; buf[i]; ) {
402: if ( ! mdoc_iscdelim(buf[i]))
403: break;
404: i++;
405: if (0 == buf[i] || ' ' != buf[i])
406: break;
407: i++;
408: while (buf[i] && ' ' == buf[i])
409: i++;
410: }
1.17 kristaps 411:
1.1 kristaps 412: if (0 == buf[i]) {
413: *v = &buf[*pos];
1.23 kristaps 414: if (' ' != buf[i - 1])
415: return(ARGS_PUNCT);
416: if (ARGS_NOWARN & fl)
417: return(ARGS_PUNCT);
418: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
419: return(ARGS_ERROR);
1.1 kristaps 420: return(ARGS_PUNCT);
421: }
422: }
423:
1.17 kristaps 424: *v = &buf[*pos];
1.1 kristaps 425:
1.17 kristaps 426: /*
427: * First handle TABSEP items, restricted to `Bl -column'. This
428: * ignores conventional token parsing and instead uses tabs or
429: * `Ta' macros to separate phrases. Phrases are parsed again
430: * for arguments at a later phase.
431: */
1.1 kristaps 432:
1.17 kristaps 433: if (ARGS_TABSEP & fl) {
1.20 kristaps 434: /* Scan ahead to tab (can't be escaped). */
1.17 kristaps 435: p = strchr(*v, '\t');
436:
437: /* Scan ahead to unescaped `Ta'. */
438: for (pp = *v; ; pp++) {
439: if (NULL == (pp = strstr(pp, "Ta")))
440: break;
441: if (pp > *v && ' ' != *(pp - 1))
442: continue;
443: if (' ' == *(pp + 2) || 0 == *(pp + 2))
444: break;
445: }
446:
1.21 kristaps 447: /*
448: * Adjust new-buffer position to be beyond delimiter
449: * mark (e.g., Ta -> end + 2).
450: */
1.20 kristaps 451: if (p && pp) {
452: *pos += pp < p ? 2 : 1;
453: p = pp < p ? pp : p;
454: } else if (p && ! pp) {
455: *pos += 1;
456: } else if (pp && ! p) {
1.17 kristaps 457: p = pp;
1.20 kristaps 458: *pos += 2;
459: } else
460: p = strchr(*v, 0);
461:
1.21 kristaps 462: /* Whitespace check for eoln case... */
1.23 kristaps 463: if (0 == *p && ' ' == *(p - 1) && ! (ARGS_NOWARN & fl))
1.20 kristaps 464: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
465: return(ARGS_ERROR);
466:
467: *pos += (int)(p - *v);
1.17 kristaps 468:
469: /* Strip delimiter's preceding whitespace. */
1.20 kristaps 470: pp = p - 1;
471: while (pp > *v && ' ' == *pp) {
472: if (pp > *v && '\\' == *(pp - 1))
473: break;
474: pp--;
1.17 kristaps 475: }
1.20 kristaps 476: *(pp + 1) = 0;
1.17 kristaps 477:
1.20 kristaps 478: /* Strip delimiter's proceeding whitespace. */
479: for (pp = &buf[*pos]; ' ' == *pp; pp++, (*pos)++)
480: /* Skip ahead. */ ;
1.1 kristaps 481:
1.17 kristaps 482: return(ARGS_PHRASE);
483: }
1.1 kristaps 484:
1.17 kristaps 485: /*
486: * Process a quoted literal. A quote begins with a double-quote
487: * and ends with a double-quote NOT preceded by a double-quote.
488: * Whitespace is NOT involved in literal termination.
489: */
1.1 kristaps 490:
1.17 kristaps 491: if ('\"' == buf[*pos]) {
492: *v = &buf[++(*pos)];
1.1 kristaps 493:
1.17 kristaps 494: for ( ; buf[*pos]; (*pos)++) {
495: if ('\"' != buf[*pos])
496: continue;
497: if ('\"' != buf[*pos + 1])
498: break;
499: (*pos)++;
500: }
1.1 kristaps 501:
1.17 kristaps 502: if (0 == buf[*pos]) {
1.23 kristaps 503: if (ARGS_NOWARN & fl)
504: return(ARGS_QWORD);
1.18 kristaps 505: if ( ! mdoc_pwarn(m, line, *pos, EQUOTTERM))
506: return(ARGS_ERROR);
507: return(ARGS_QWORD);
1.17 kristaps 508: }
1.1 kristaps 509:
510: buf[(*pos)++] = 0;
511:
512: if (0 == buf[*pos])
1.17 kristaps 513: return(ARGS_QWORD);
1.1 kristaps 514:
1.17 kristaps 515: while (' ' == buf[*pos])
516: (*pos)++;
1.1 kristaps 517:
1.23 kristaps 518: if (0 == buf[*pos] && ! (ARGS_NOWARN & fl))
1.17 kristaps 519: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
520: return(ARGS_ERROR);
1.1 kristaps 521:
1.17 kristaps 522: return(ARGS_QWORD);
1.1 kristaps 523: }
524:
1.17 kristaps 525: /*
526: * A non-quoted term progresses until either the end of line or
527: * a non-escaped whitespace.
1.1 kristaps 528: */
529:
1.17 kristaps 530: for ( ; buf[*pos]; (*pos)++)
531: if (' ' == buf[*pos] && '\\' != buf[*pos - 1])
532: break;
1.1 kristaps 533:
1.17 kristaps 534: if (0 == buf[*pos])
535: return(ARGS_WORD);
1.1 kristaps 536:
537: buf[(*pos)++] = 0;
538:
1.17 kristaps 539: while (' ' == buf[*pos])
1.1 kristaps 540: (*pos)++;
541:
1.23 kristaps 542: if (0 == buf[*pos] && ! (ARGS_NOWARN & fl))
1.17 kristaps 543: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
544: return(ARGS_ERROR);
1.1 kristaps 545:
1.17 kristaps 546: return(ARGS_WORD);
1.1 kristaps 547: }
548:
549:
550: static int
1.27 kristaps 551: argv_a2arg(int tok, const char *p)
1.1 kristaps 552: {
553:
554: /*
555: * Parse an argument identifier from its text. XXX - this
556: * should really be table-driven to clarify the code.
557: *
558: * If you add an argument to the list, make sure that you
559: * register it here with its one or more macros!
560: */
561:
562: switch (tok) {
563: case (MDOC_An):
1.27 kristaps 564: if (0 == strcmp(p, "split"))
1.1 kristaps 565: return(MDOC_Split);
1.27 kristaps 566: else if (0 == strcmp(p, "nosplit"))
1.1 kristaps 567: return(MDOC_Nosplit);
568: break;
569:
570: case (MDOC_Bd):
1.27 kristaps 571: if (0 == strcmp(p, "ragged"))
1.1 kristaps 572: return(MDOC_Ragged);
1.27 kristaps 573: else if (0 == strcmp(p, "unfilled"))
1.1 kristaps 574: return(MDOC_Unfilled);
1.27 kristaps 575: else if (0 == strcmp(p, "filled"))
1.1 kristaps 576: return(MDOC_Filled);
1.27 kristaps 577: else if (0 == strcmp(p, "literal"))
1.1 kristaps 578: return(MDOC_Literal);
1.27 kristaps 579: else if (0 == strcmp(p, "file"))
1.1 kristaps 580: return(MDOC_File);
1.27 kristaps 581: else if (0 == strcmp(p, "offset"))
1.1 kristaps 582: return(MDOC_Offset);
1.27 kristaps 583: else if (0 == strcmp(p, "compact"))
1.1 kristaps 584: return(MDOC_Compact);
1.28 kristaps 585: else if (0 == strcmp(p, "centered"))
586: return(MDOC_Centred);
1.1 kristaps 587: break;
588:
589: case (MDOC_Bf):
1.27 kristaps 590: if (0 == strcmp(p, "emphasis"))
1.1 kristaps 591: return(MDOC_Emphasis);
1.27 kristaps 592: else if (0 == strcmp(p, "literal"))
1.1 kristaps 593: return(MDOC_Literal);
1.27 kristaps 594: else if (0 == strcmp(p, "symbolic"))
1.1 kristaps 595: return(MDOC_Symbolic);
596: break;
597:
598: case (MDOC_Bk):
1.27 kristaps 599: if (0 == strcmp(p, "words"))
1.1 kristaps 600: return(MDOC_Words);
601: break;
602:
603: case (MDOC_Bl):
1.27 kristaps 604: if (0 == strcmp(p, "bullet"))
1.1 kristaps 605: return(MDOC_Bullet);
1.27 kristaps 606: else if (0 == strcmp(p, "dash"))
1.1 kristaps 607: return(MDOC_Dash);
1.27 kristaps 608: else if (0 == strcmp(p, "hyphen"))
1.1 kristaps 609: return(MDOC_Hyphen);
1.27 kristaps 610: else if (0 == strcmp(p, "item"))
1.1 kristaps 611: return(MDOC_Item);
1.27 kristaps 612: else if (0 == strcmp(p, "enum"))
1.1 kristaps 613: return(MDOC_Enum);
1.27 kristaps 614: else if (0 == strcmp(p, "tag"))
1.1 kristaps 615: return(MDOC_Tag);
1.27 kristaps 616: else if (0 == strcmp(p, "diag"))
1.1 kristaps 617: return(MDOC_Diag);
1.27 kristaps 618: else if (0 == strcmp(p, "hang"))
1.1 kristaps 619: return(MDOC_Hang);
1.27 kristaps 620: else if (0 == strcmp(p, "ohang"))
1.1 kristaps 621: return(MDOC_Ohang);
1.27 kristaps 622: else if (0 == strcmp(p, "inset"))
1.1 kristaps 623: return(MDOC_Inset);
1.27 kristaps 624: else if (0 == strcmp(p, "column"))
1.1 kristaps 625: return(MDOC_Column);
1.27 kristaps 626: else if (0 == strcmp(p, "width"))
1.1 kristaps 627: return(MDOC_Width);
1.27 kristaps 628: else if (0 == strcmp(p, "offset"))
1.1 kristaps 629: return(MDOC_Offset);
1.27 kristaps 630: else if (0 == strcmp(p, "compact"))
1.1 kristaps 631: return(MDOC_Compact);
1.27 kristaps 632: else if (0 == strcmp(p, "nested"))
1.1 kristaps 633: return(MDOC_Nested);
634: break;
635:
636: case (MDOC_Rv):
637: /* FALLTHROUGH */
638: case (MDOC_Ex):
1.27 kristaps 639: if (0 == strcmp(p, "std"))
1.1 kristaps 640: return(MDOC_Std);
641: break;
642: default:
643: break;
644: }
645:
646: return(MDOC_ARG_MAX);
647: }
648:
649:
650: static int
1.11 kristaps 651: argv_multi(struct mdoc *m, int line,
1.1 kristaps 652: struct mdoc_argv *v, int *pos, char *buf)
653: {
1.8 kristaps 654: int c;
1.1 kristaps 655: char *p;
656:
657: for (v->sz = 0; ; v->sz++) {
658: if ('-' == buf[*pos])
659: break;
1.17 kristaps 660: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 661: if (ARGS_ERROR == c)
662: return(0);
663: else if (ARGS_EOLN == c)
664: break;
665:
1.31 kristaps 666: if (0 == v->sz % MULTI_STEP)
667: v->value = mandoc_realloc(v->value,
1.1 kristaps 668: (v->sz + MULTI_STEP) * sizeof(char *));
1.31 kristaps 669:
670: v->value[(int)v->sz] = mandoc_strdup(p);
1.1 kristaps 671: }
672:
1.7 kristaps 673: return(1);
1.1 kristaps 674: }
675:
676:
677: static int
1.11 kristaps 678: argv_opt_single(struct mdoc *m, int line,
1.1 kristaps 679: struct mdoc_argv *v, int *pos, char *buf)
680: {
681: int c;
682: char *p;
683:
684: if ('-' == buf[*pos])
685: return(1);
686:
1.17 kristaps 687: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 688: if (ARGS_ERROR == c)
689: return(0);
690: if (ARGS_EOLN == c)
691: return(1);
692:
693: v->sz = 1;
1.31 kristaps 694: v->value = mandoc_malloc(sizeof(char *));
695: v->value[0] = mandoc_strdup(p);
1.2 kristaps 696:
1.1 kristaps 697: return(1);
698: }
699:
700:
701: /*
702: * Parse a single, mandatory value from the stream.
703: */
704: static int
1.11 kristaps 705: argv_single(struct mdoc *m, int line,
1.1 kristaps 706: struct mdoc_argv *v, int *pos, char *buf)
707: {
708: int c, ppos;
709: char *p;
710:
711: ppos = *pos;
712:
1.17 kristaps 713: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 714: if (ARGS_ERROR == c)
715: return(0);
716: if (ARGS_EOLN == c)
1.11 kristaps 717: return(mdoc_perr(m, line, ppos, EARGVAL));
1.1 kristaps 718:
719: v->sz = 1;
1.31 kristaps 720: v->value = mandoc_malloc(sizeof(char *));
721: v->value[0] = mandoc_strdup(p);
1.2 kristaps 722:
1.1 kristaps 723: return(1);
724: }
725:
726:
727: /*
728: * Determine rules for parsing arguments. Arguments can either accept
729: * no parameters, an optional single parameter, one parameter, or
730: * multiple parameters.
731: */
732: static int
733: argv(struct mdoc *mdoc, int line,
734: struct mdoc_argv *v, int *pos, char *buf)
735: {
736:
737: v->sz = 0;
738: v->value = NULL;
739:
740: switch (mdoc_argvflags[v->arg]) {
741: case (ARGV_SINGLE):
742: return(argv_single(mdoc, line, v, pos, buf));
743: case (ARGV_MULTI):
744: return(argv_multi(mdoc, line, v, pos, buf));
745: case (ARGV_OPT_SINGLE):
746: return(argv_opt_single(mdoc, line, v, pos, buf));
747: default:
748: /* ARGV_NONE */
749: break;
750: }
751:
752: return(1);
753: }
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