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1.11 ! kristaps 1: /* $Id: mdoc_argv.c,v 1.10 2009/07/06 11:21:34 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"
26:
27: /*
28: * Routines to parse arguments of macros. Arguments follow the syntax
29: * of `-arg [val [valN...]]'. Arguments come in all types: quoted
30: * arguments, multiple arguments per value, no-value arguments, etc.
31: *
32: * There's no limit to the number or arguments that may be allocated.
33: */
34:
1.6 kristaps 35: /* FIXME .Bf Li raises "macro-like parameter". */
1.7 kristaps 36: /* FIXME .Bl -column should deprecate old-groff syntax. */
1.6 kristaps 37:
1.1 kristaps 38: #define ARGS_QUOTED (1 << 0)
39: #define ARGS_DELIM (1 << 1)
40: #define ARGS_TABSEP (1 << 2)
41: #define ARGS_ARGVLIKE (1 << 3)
42:
43: #define ARGV_NONE (1 << 0)
44: #define ARGV_SINGLE (1 << 1)
45: #define ARGV_MULTI (1 << 2)
46: #define ARGV_OPT_SINGLE (1 << 3)
47:
48: #define MULTI_STEP 5
49:
50: static int argv_a2arg(int, const char *);
51: static int args(struct mdoc *, int, int *,
52: char *, int, char **);
53: static int argv(struct mdoc *, int,
54: struct mdoc_argv *, int *, char *);
55: static int argv_single(struct mdoc *, int,
56: struct mdoc_argv *, int *, char *);
57: static int argv_opt_single(struct mdoc *, int,
58: struct mdoc_argv *, int *, char *);
59: static int argv_multi(struct mdoc *, int,
60: struct mdoc_argv *, int *, char *);
1.2 kristaps 61:
1.1 kristaps 62: /* Per-argument flags. */
63:
64: static int mdoc_argvflags[MDOC_ARG_MAX] = {
65: ARGV_NONE, /* MDOC_Split */
66: ARGV_NONE, /* MDOC_Nosplit */
67: ARGV_NONE, /* MDOC_Ragged */
68: ARGV_NONE, /* MDOC_Unfilled */
69: ARGV_NONE, /* MDOC_Literal */
70: ARGV_NONE, /* MDOC_File */
71: ARGV_SINGLE, /* MDOC_Offset */
72: ARGV_NONE, /* MDOC_Bullet */
73: ARGV_NONE, /* MDOC_Dash */
74: ARGV_NONE, /* MDOC_Hyphen */
75: ARGV_NONE, /* MDOC_Item */
76: ARGV_NONE, /* MDOC_Enum */
77: ARGV_NONE, /* MDOC_Tag */
78: ARGV_NONE, /* MDOC_Diag */
79: ARGV_NONE, /* MDOC_Hang */
80: ARGV_NONE, /* MDOC_Ohang */
81: ARGV_NONE, /* MDOC_Inset */
82: ARGV_MULTI, /* MDOC_Column */
83: ARGV_SINGLE, /* MDOC_Width */
84: ARGV_NONE, /* MDOC_Compact */
85: ARGV_OPT_SINGLE, /* MDOC_Std */
86: ARGV_NONE, /* MDOC_Filled */
87: ARGV_NONE, /* MDOC_Words */
88: ARGV_NONE, /* MDOC_Emphasis */
89: ARGV_NONE, /* MDOC_Symbolic */
90: ARGV_NONE /* MDOC_Symbolic */
91: };
92:
93: static int mdoc_argflags[MDOC_MAX] = {
1.5 kristaps 94: 0, /* Ap */
1.1 kristaps 95: 0, /* Dd */
96: 0, /* Dt */
97: 0, /* Os */
98: ARGS_QUOTED, /* Sh */
99: ARGS_QUOTED, /* Ss */
100: ARGS_DELIM, /* Pp */
101: ARGS_DELIM, /* D1 */
102: ARGS_DELIM | ARGS_QUOTED, /* Dl */
103: 0, /* Bd */
104: 0, /* Ed */
1.7 kristaps 105: ARGS_QUOTED, /* Bl */
1.1 kristaps 106: 0, /* El */
107: 0, /* It */
108: ARGS_DELIM, /* Ad */
109: ARGS_DELIM, /* An */
110: ARGS_DELIM | ARGS_QUOTED, /* Ar */
111: ARGS_QUOTED, /* Cd */
112: ARGS_DELIM, /* Cm */
113: ARGS_DELIM, /* Dv */
114: ARGS_DELIM, /* Er */
115: ARGS_DELIM, /* Ev */
116: 0, /* Ex */
117: ARGS_DELIM | ARGS_QUOTED, /* Fa */
118: 0, /* Fd */
119: ARGS_DELIM, /* Fl */
120: ARGS_DELIM | ARGS_QUOTED, /* Fn */
121: ARGS_DELIM | ARGS_QUOTED, /* Ft */
122: ARGS_DELIM, /* Ic */
123: 0, /* In */
124: ARGS_DELIM | ARGS_QUOTED, /* Li */
125: ARGS_QUOTED, /* Nd */
126: ARGS_DELIM, /* Nm */
127: ARGS_DELIM, /* Op */
128: 0, /* Ot */
129: ARGS_DELIM, /* Pa */
130: 0, /* Rv */
131: ARGS_DELIM | ARGS_ARGVLIKE, /* St */
132: ARGS_DELIM, /* Va */
133: ARGS_DELIM, /* Vt */
134: ARGS_DELIM, /* Xr */
135: ARGS_QUOTED, /* %A */
136: ARGS_QUOTED, /* %B */
137: ARGS_QUOTED, /* %D */
138: ARGS_QUOTED, /* %I */
139: ARGS_QUOTED, /* %J */
140: ARGS_QUOTED, /* %N */
141: ARGS_QUOTED, /* %O */
142: ARGS_QUOTED, /* %P */
143: ARGS_QUOTED, /* %R */
144: ARGS_QUOTED, /* %T */
145: ARGS_QUOTED, /* %V */
146: ARGS_DELIM, /* Ac */
147: 0, /* Ao */
148: ARGS_DELIM, /* Aq */
149: ARGS_DELIM, /* At */
150: ARGS_DELIM, /* Bc */
151: 0, /* Bf */
152: 0, /* Bo */
153: ARGS_DELIM, /* Bq */
154: ARGS_DELIM, /* Bsx */
155: ARGS_DELIM, /* Bx */
156: 0, /* Db */
157: ARGS_DELIM, /* Dc */
158: 0, /* Do */
159: ARGS_DELIM, /* Dq */
160: ARGS_DELIM, /* Ec */
161: 0, /* Ef */
162: ARGS_DELIM, /* Em */
163: 0, /* Eo */
164: ARGS_DELIM, /* Fx */
165: ARGS_DELIM, /* Ms */
166: ARGS_DELIM, /* No */
167: ARGS_DELIM, /* Ns */
168: ARGS_DELIM, /* Nx */
169: ARGS_DELIM, /* Ox */
170: ARGS_DELIM, /* Pc */
171: ARGS_DELIM, /* Pf */
172: 0, /* Po */
173: ARGS_DELIM, /* Pq */
174: ARGS_DELIM, /* Qc */
175: ARGS_DELIM, /* Ql */
176: 0, /* Qo */
177: ARGS_DELIM, /* Qq */
178: 0, /* Re */
179: 0, /* Rs */
180: ARGS_DELIM, /* Sc */
181: 0, /* So */
182: ARGS_DELIM, /* Sq */
183: 0, /* Sm */
184: ARGS_DELIM, /* Sx */
185: ARGS_DELIM | ARGS_QUOTED, /* Sy */
186: ARGS_DELIM, /* Tn */
187: ARGS_DELIM, /* Ux */
188: ARGS_DELIM, /* Xc */
189: 0, /* Xo */
190: ARGS_QUOTED, /* Fo */
191: 0, /* Fc */
192: 0, /* Oo */
193: ARGS_DELIM, /* Oc */
194: 0, /* Bk */
195: 0, /* Ek */
196: 0, /* Bt */
197: 0, /* Hf */
198: 0, /* Fr */
199: 0, /* Ud */
200: 0, /* Lb */
201: ARGS_DELIM, /* Lp */
202: ARGS_DELIM | ARGS_QUOTED, /* Lk */
203: ARGS_DELIM | ARGS_QUOTED, /* Mt */
204: ARGS_DELIM, /* Brq */
205: 0, /* Bro */
206: ARGS_DELIM, /* Brc */
207: ARGS_QUOTED, /* %C */
208: 0, /* Es */
209: 0, /* En */
210: 0, /* Dx */
211: ARGS_QUOTED, /* %Q */
212: };
213:
214:
215: /*
216: * Parse an argument from line text. This comes in the form of -key
217: * [value0...], which may either have a single mandatory value, at least
218: * one mandatory value, an optional single value, or no value.
219: */
220: int
1.11 ! kristaps 221: mdoc_argv(struct mdoc *m, int line, int tok,
1.1 kristaps 222: struct mdoc_arg **v, int *pos, char *buf)
223: {
224: int i;
225: char *p, sv;
226: struct mdoc_argv tmp;
227: struct mdoc_arg *arg;
228:
229: if (0 == buf[*pos])
230: return(ARGV_EOLN);
231:
232: assert(' ' != buf[*pos]);
233:
234: if ('-' != buf[*pos] || ARGS_ARGVLIKE & mdoc_argflags[tok])
235: return(ARGV_WORD);
236:
237: /* Parse through to the first unescaped space. */
238:
239: i = *pos;
240: p = &buf[++(*pos)];
241:
242: assert(*pos > 0);
243:
244: /* LINTED */
245: while (buf[*pos]) {
246: if (' ' == buf[*pos])
247: if ('\\' != buf[*pos - 1])
248: break;
249: (*pos)++;
250: }
251:
252: /* XXX - save zeroed byte, if not an argument. */
253:
254: sv = 0;
255: if (buf[*pos]) {
256: sv = buf[*pos];
257: buf[(*pos)++] = 0;
258: }
259:
260: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
261: tmp.line = line;
262: tmp.pos = *pos;
263:
264: /* See if our token accepts the argument. */
265:
266: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
267: /* XXX - restore saved zeroed byte. */
268: if (sv)
269: buf[*pos - 1] = sv;
1.11 ! kristaps 270: if ( ! mdoc_pwarn(m, line, i, EARGVPARM))
1.1 kristaps 271: return(ARGV_ERROR);
272: return(ARGV_WORD);
273: }
274:
275: while (buf[*pos] && ' ' == buf[*pos])
276: (*pos)++;
277:
1.11 ! kristaps 278: if ( ! argv(m, line, &tmp, pos, buf))
1.1 kristaps 279: return(ARGV_ERROR);
280:
281: if (NULL == (arg = *v)) {
1.2 kristaps 282: *v = calloc(1, sizeof(struct mdoc_arg));
283: if (NULL == *v) {
1.11 ! kristaps 284: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 285: return(ARGV_ERROR);
286: }
1.1 kristaps 287: arg = *v;
288: }
289:
290: arg->argc++;
1.2 kristaps 291: arg->argv = realloc(arg->argv, arg->argc *
1.1 kristaps 292: sizeof(struct mdoc_argv));
293:
1.2 kristaps 294: if (NULL == arg->argv) {
1.11 ! kristaps 295: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 296: return(ARGV_ERROR);
297: }
298:
1.1 kristaps 299: (void)memcpy(&arg->argv[(int)arg->argc - 1],
300: &tmp, sizeof(struct mdoc_argv));
301:
302: return(ARGV_ARG);
303: }
304:
305:
306: void
307: mdoc_argv_free(struct mdoc_arg *p)
308: {
309: int i, j;
310:
311: if (NULL == p)
312: return;
313:
314: if (p->refcnt) {
315: --(p->refcnt);
316: if (p->refcnt)
317: return;
318: }
319: assert(p->argc);
320:
321: /* LINTED */
322: for (i = 0; i < (int)p->argc; i++) {
323: if (0 == p->argv[i].sz)
324: continue;
325: /* LINTED */
326: for (j = 0; j < (int)p->argv[i].sz; j++)
327: free(p->argv[i].value[j]);
328:
329: free(p->argv[i].value);
330: }
331:
332: free(p->argv);
333: free(p);
334: }
335:
336:
337: int
1.11 ! kristaps 338: mdoc_args(struct mdoc *m, int line,
1.1 kristaps 339: int *pos, char *buf, int tok, char **v)
340: {
341: int fl, c, i;
342: struct mdoc_node *n;
343:
344: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
345:
346: /*
347: * Override per-macro argument flags with context-specific ones.
348: * As of now, this is only valid for `It' depending on its list
349: * context.
350: */
351:
352: switch (tok) {
353: case (MDOC_It):
1.11 ! kristaps 354: for (n = m->last; n; n = n->parent)
1.1 kristaps 355: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
356: break;
357:
358: assert(n);
359: c = (int)(n->args ? n->args->argc : 0);
360: assert(c > 0);
361:
362: /*
363: * Using `Bl -column' adds ARGS_TABSEP to the arguments
364: * and invalidates ARGS_DELIM. Using `Bl -diag' allows
365: * for quoted arguments.
366: */
367:
368: /* LINTED */
369: for (i = 0; i < c; i++) {
370: switch (n->args->argv[i].arg) {
371: case (MDOC_Column):
372: fl |= ARGS_TABSEP;
373: fl &= ~ARGS_DELIM;
374: i = c;
375: break;
376: case (MDOC_Diag):
377: fl |= ARGS_QUOTED;
378: i = c;
379: break;
380: default:
381: break;
382: }
383: }
384: break;
385: default:
386: break;
387: }
388:
1.11 ! kristaps 389: return(args(m, line, pos, buf, fl, v));
1.1 kristaps 390: }
391:
392:
393: static int
1.11 ! kristaps 394: args(struct mdoc *m, int line,
1.1 kristaps 395: int *pos, char *buf, int fl, char **v)
396: {
397: int i;
398: char *p, *pp;
399:
400: assert(*pos > 0);
401:
402: if (0 == buf[*pos])
403: return(ARGS_EOLN);
404:
405: if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
1.11 ! kristaps 406: if ( ! mdoc_pwarn(m, line, *pos, EQUOTPARM))
1.1 kristaps 407: return(ARGS_ERROR);
408:
409: if ( ! (fl & ARGS_ARGVLIKE) && '-' == buf[*pos])
1.11 ! kristaps 410: if ( ! mdoc_pwarn(m, line, *pos, EARGVPARM))
1.1 kristaps 411: return(ARGS_ERROR);
412:
413: /*
414: * If the first character is a delimiter and we're to look for
415: * delimited strings, then pass down the buffer seeing if it
416: * follows the pattern of [[::delim::][ ]+]+.
417: */
418:
419: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
420: for (i = *pos; buf[i]; ) {
421: if ( ! mdoc_iscdelim(buf[i]))
422: break;
423: i++;
424: /* There must be at least one space... */
425: if (0 == buf[i] || ' ' != buf[i])
426: break;
427: i++;
428: while (buf[i] && ' ' == buf[i])
429: i++;
430: }
431: if (0 == buf[i]) {
432: *v = &buf[*pos];
433: return(ARGS_PUNCT);
434: }
435: }
436:
437: /* First parse non-quoted strings. */
438:
439: if ('\"' != buf[*pos] || ! (ARGS_QUOTED & fl)) {
440: *v = &buf[*pos];
441:
442: /*
443: * Thar be dragons here! If we're tab-separated, search
444: * ahead for either a tab or the `Ta' macro.
445: * If a `Ta' is detected, it must be space-buffered before and
446: * after. If either of these hold true, then prune out the
447: * extra spaces and call it an argument.
448: */
449:
450: if (ARGS_TABSEP & fl) {
451: /* Scan ahead to unescaped tab. */
452:
453: p = strchr(*v, '\t');
454:
455: /* Scan ahead to unescaped `Ta'. */
456:
457: for (pp = *v; ; pp++) {
458: if (NULL == (pp = strstr(pp, "Ta")))
459: break;
460: if (pp > *v && ' ' != *(pp - 1))
461: continue;
462: if (' ' == *(pp + 2) || 0 == *(pp + 2))
463: break;
464: }
465:
466: /* Choose delimiter tab/Ta. */
467:
468: if (p && pp)
469: p = (p < pp ? p : pp);
470: else if ( ! p && pp)
471: p = pp;
472:
473: /* Strip delimiter's preceding whitespace. */
474:
475: if (p && p > *v) {
476: pp = p - 1;
477: while (pp > *v && ' ' == *pp)
478: pp--;
479: if (pp == *v && ' ' == *pp)
480: *pp = 0;
481: else if (' ' == *pp)
482: *(pp + 1) = 0;
483: }
484:
485: /* ...in- and proceding whitespace. */
486:
487: if (p && ('\t' != *p)) {
488: *p++ = 0;
489: *p++ = 0;
490: } else if (p)
491: *p++ = 0;
492:
493: if (p) {
494: while (' ' == *p)
495: p++;
496: if (0 != *p)
497: *(p - 1) = 0;
498: *pos += (int)(p - *v);
499: }
500:
501: if (p && 0 == *p)
1.11 ! kristaps 502: if ( ! mdoc_pwarn(m, line, *pos, ECOLEMPTY))
1.1 kristaps 503: return(0);
504: if (p && 0 == *p && p > *v && ' ' == *(p - 1))
1.11 ! kristaps 505: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
1.1 kristaps 506: return(0);
507:
508: if (p)
509: return(ARGS_PHRASE);
510:
511: /* Configure the eoln case, too. */
512:
513: p = strchr(*v, 0);
514: assert(p);
515:
516: if (p > *v && ' ' == *(p - 1))
1.11 ! kristaps 517: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
1.1 kristaps 518: return(0);
519: *pos += (int)(p - *v);
520:
521: return(ARGS_PHRASE);
522: }
523:
524: /* Do non-tabsep look-ahead here. */
525:
526: if ( ! (ARGS_TABSEP & fl))
527: while (buf[*pos]) {
528: if (' ' == buf[*pos])
529: if ('\\' != buf[*pos - 1])
530: break;
531: (*pos)++;
532: }
533:
534: if (0 == buf[*pos])
535: return(ARGS_WORD);
536:
537: buf[(*pos)++] = 0;
538:
539: if (0 == buf[*pos])
540: return(ARGS_WORD);
541:
542: if ( ! (ARGS_TABSEP & fl))
543: while (buf[*pos] && ' ' == buf[*pos])
544: (*pos)++;
545:
546: if (buf[*pos])
547: return(ARGS_WORD);
548:
1.11 ! kristaps 549: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
1.1 kristaps 550: return(ARGS_ERROR);
551:
552: return(ARGS_WORD);
553: }
554:
555: /*
556: * If we're a quoted string (and quoted strings are allowed),
557: * then parse ahead to the next quote. If none's found, it's an
558: * error. After, parse to the next word.
559: */
560:
561: *v = &buf[++(*pos)];
562:
563: while (buf[*pos] && '\"' != buf[*pos])
564: (*pos)++;
565:
566: if (0 == buf[*pos]) {
1.11 ! kristaps 567: (void)mdoc_perr(m, line, *pos, EQUOTTERM);
1.1 kristaps 568: return(ARGS_ERROR);
569: }
570:
571: buf[(*pos)++] = 0;
572: if (0 == buf[*pos])
573: return(ARGS_QWORD);
574:
575: while (buf[*pos] && ' ' == buf[*pos])
576: (*pos)++;
577:
578: if (buf[*pos])
579: return(ARGS_QWORD);
580:
1.11 ! kristaps 581: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
1.1 kristaps 582: return(ARGS_ERROR);
583:
584: return(ARGS_QWORD);
585: }
586:
587:
588: static int
589: argv_a2arg(int tok, const char *argv)
590: {
591:
592: /*
593: * Parse an argument identifier from its text. XXX - this
594: * should really be table-driven to clarify the code.
595: *
596: * If you add an argument to the list, make sure that you
597: * register it here with its one or more macros!
598: */
599:
600: switch (tok) {
601: case (MDOC_An):
1.2 kristaps 602: if (0 == strcmp(argv, "split"))
1.1 kristaps 603: return(MDOC_Split);
1.2 kristaps 604: else if (0 == strcmp(argv, "nosplit"))
1.1 kristaps 605: return(MDOC_Nosplit);
606: break;
607:
608: case (MDOC_Bd):
1.2 kristaps 609: if (0 == strcmp(argv, "ragged"))
1.1 kristaps 610: return(MDOC_Ragged);
1.2 kristaps 611: else if (0 == strcmp(argv, "unfilled"))
1.1 kristaps 612: return(MDOC_Unfilled);
1.2 kristaps 613: else if (0 == strcmp(argv, "filled"))
1.1 kristaps 614: return(MDOC_Filled);
1.2 kristaps 615: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 616: return(MDOC_Literal);
1.2 kristaps 617: else if (0 == strcmp(argv, "file"))
1.1 kristaps 618: return(MDOC_File);
1.2 kristaps 619: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 620: return(MDOC_Offset);
1.2 kristaps 621: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 622: return(MDOC_Compact);
623: break;
624:
625: case (MDOC_Bf):
1.2 kristaps 626: if (0 == strcmp(argv, "emphasis"))
1.1 kristaps 627: return(MDOC_Emphasis);
1.2 kristaps 628: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 629: return(MDOC_Literal);
1.2 kristaps 630: else if (0 == strcmp(argv, "symbolic"))
1.1 kristaps 631: return(MDOC_Symbolic);
632: break;
633:
634: case (MDOC_Bk):
1.2 kristaps 635: if (0 == strcmp(argv, "words"))
1.1 kristaps 636: return(MDOC_Words);
637: break;
638:
639: case (MDOC_Bl):
1.2 kristaps 640: if (0 == strcmp(argv, "bullet"))
1.1 kristaps 641: return(MDOC_Bullet);
1.2 kristaps 642: else if (0 == strcmp(argv, "dash"))
1.1 kristaps 643: return(MDOC_Dash);
1.2 kristaps 644: else if (0 == strcmp(argv, "hyphen"))
1.1 kristaps 645: return(MDOC_Hyphen);
1.2 kristaps 646: else if (0 == strcmp(argv, "item"))
1.1 kristaps 647: return(MDOC_Item);
1.2 kristaps 648: else if (0 == strcmp(argv, "enum"))
1.1 kristaps 649: return(MDOC_Enum);
1.2 kristaps 650: else if (0 == strcmp(argv, "tag"))
1.1 kristaps 651: return(MDOC_Tag);
1.2 kristaps 652: else if (0 == strcmp(argv, "diag"))
1.1 kristaps 653: return(MDOC_Diag);
1.2 kristaps 654: else if (0 == strcmp(argv, "hang"))
1.1 kristaps 655: return(MDOC_Hang);
1.2 kristaps 656: else if (0 == strcmp(argv, "ohang"))
1.1 kristaps 657: return(MDOC_Ohang);
1.2 kristaps 658: else if (0 == strcmp(argv, "inset"))
1.1 kristaps 659: return(MDOC_Inset);
1.2 kristaps 660: else if (0 == strcmp(argv, "column"))
1.1 kristaps 661: return(MDOC_Column);
1.2 kristaps 662: else if (0 == strcmp(argv, "width"))
1.1 kristaps 663: return(MDOC_Width);
1.2 kristaps 664: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 665: return(MDOC_Offset);
1.2 kristaps 666: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 667: return(MDOC_Compact);
1.2 kristaps 668: else if (0 == strcmp(argv, "nested"))
1.1 kristaps 669: return(MDOC_Nested);
670: break;
671:
672: case (MDOC_Rv):
673: /* FALLTHROUGH */
674: case (MDOC_Ex):
1.2 kristaps 675: if (0 == strcmp(argv, "std"))
1.1 kristaps 676: return(MDOC_Std);
677: break;
678: default:
679: break;
680: }
681:
682: return(MDOC_ARG_MAX);
683: }
684:
685:
686: static int
1.11 ! kristaps 687: argv_multi(struct mdoc *m, int line,
1.1 kristaps 688: struct mdoc_argv *v, int *pos, char *buf)
689: {
1.8 kristaps 690: int c;
1.1 kristaps 691: char *p;
692:
693: for (v->sz = 0; ; v->sz++) {
694: if ('-' == buf[*pos])
695: break;
1.11 ! kristaps 696: c = args(m, line, pos, buf, ARGS_QUOTED, &p);
1.1 kristaps 697: if (ARGS_ERROR == c)
698: return(0);
699: else if (ARGS_EOLN == c)
700: break;
701:
1.2 kristaps 702: if (0 == v->sz % MULTI_STEP) {
703: v->value = realloc(v->value,
1.1 kristaps 704: (v->sz + MULTI_STEP) * sizeof(char *));
1.2 kristaps 705: if (NULL == v->value) {
1.11 ! kristaps 706: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 707: return(ARGV_ERROR);
708: }
709: }
1.1 kristaps 710: if (NULL == (v->value[(int)v->sz] = strdup(p)))
1.11 ! kristaps 711: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 712: }
713:
1.7 kristaps 714: return(1);
1.1 kristaps 715: }
716:
717:
718: static int
1.11 ! kristaps 719: argv_opt_single(struct mdoc *m, int line,
1.1 kristaps 720: struct mdoc_argv *v, int *pos, char *buf)
721: {
722: int c;
723: char *p;
724:
725: if ('-' == buf[*pos])
726: return(1);
727:
1.11 ! kristaps 728: c = args(m, line, pos, buf, ARGS_QUOTED, &p);
1.1 kristaps 729: if (ARGS_ERROR == c)
730: return(0);
731: if (ARGS_EOLN == c)
732: return(1);
733:
734: v->sz = 1;
735: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.11 ! kristaps 736: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 737: if (NULL == (v->value[0] = strdup(p)))
1.11 ! kristaps 738: return(mdoc_nerr(m, m->last, EMALLOC));
1.2 kristaps 739:
1.1 kristaps 740: return(1);
741: }
742:
743:
744: /*
745: * Parse a single, mandatory value from the stream.
746: */
747: static int
1.11 ! kristaps 748: argv_single(struct mdoc *m, int line,
1.1 kristaps 749: struct mdoc_argv *v, int *pos, char *buf)
750: {
751: int c, ppos;
752: char *p;
753:
754: ppos = *pos;
755:
1.11 ! kristaps 756: c = args(m, line, pos, buf, ARGS_QUOTED, &p);
1.1 kristaps 757: if (ARGS_ERROR == c)
758: return(0);
759: if (ARGS_EOLN == c)
1.11 ! kristaps 760: return(mdoc_perr(m, line, ppos, EARGVAL));
1.1 kristaps 761:
762: v->sz = 1;
763: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.11 ! kristaps 764: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 765: if (NULL == (v->value[0] = strdup(p)))
1.11 ! kristaps 766: return(mdoc_nerr(m, m->last, EMALLOC));
1.2 kristaps 767:
1.1 kristaps 768: return(1);
769: }
770:
771:
772: /*
773: * Determine rules for parsing arguments. Arguments can either accept
774: * no parameters, an optional single parameter, one parameter, or
775: * multiple parameters.
776: */
777: static int
778: argv(struct mdoc *mdoc, int line,
779: struct mdoc_argv *v, int *pos, char *buf)
780: {
781:
782: v->sz = 0;
783: v->value = NULL;
784:
785: switch (mdoc_argvflags[v->arg]) {
786: case (ARGV_SINGLE):
787: return(argv_single(mdoc, line, v, pos, buf));
788: case (ARGV_MULTI):
789: return(argv_multi(mdoc, line, v, pos, buf));
790: case (ARGV_OPT_SINGLE):
791: return(argv_opt_single(mdoc, line, v, pos, buf));
792: default:
793: /* ARGV_NONE */
794: break;
795: }
796:
797: return(1);
798: }