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1.5 ! kristaps 1: /* $Id: mdoc_argv.c,v 1.4 2009/06/10 20:18:43 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:
35: #define ARGS_QUOTED (1 << 0)
36: #define ARGS_DELIM (1 << 1)
37: #define ARGS_TABSEP (1 << 2)
38: #define ARGS_ARGVLIKE (1 << 3)
39:
40: #define ARGV_NONE (1 << 0)
41: #define ARGV_SINGLE (1 << 1)
42: #define ARGV_MULTI (1 << 2)
43: #define ARGV_OPT_SINGLE (1 << 3)
44:
45: #define MULTI_STEP 5
46:
47: enum mwarn {
48: WQUOTPARM,
49: WARGVPARM,
50: WCOLEMPTY,
51: WTAILWS
52: };
53:
54: enum merr {
55: EQUOTTERM,
1.2 kristaps 56: EMALLOC,
1.1 kristaps 57: EARGVAL
58: };
59:
60: static int argv_a2arg(int, const char *);
61: static int args(struct mdoc *, int, int *,
62: char *, int, char **);
63: static int argv(struct mdoc *, int,
64: struct mdoc_argv *, int *, char *);
65: static int argv_single(struct mdoc *, int,
66: struct mdoc_argv *, int *, char *);
67: static int argv_opt_single(struct mdoc *, int,
68: struct mdoc_argv *, int *, char *);
69: static int argv_multi(struct mdoc *, int,
70: struct mdoc_argv *, int *, char *);
71: static int pwarn(struct mdoc *, int, int, enum mwarn);
72: static int perr(struct mdoc *, int, int, enum merr);
73:
1.2 kristaps 74: #define verr(m, t) perr((m), (m)->last->line, (m)->last->pos, (t))
75:
1.1 kristaps 76: /* Per-argument flags. */
77:
78: static int mdoc_argvflags[MDOC_ARG_MAX] = {
79: ARGV_NONE, /* MDOC_Split */
80: ARGV_NONE, /* MDOC_Nosplit */
81: ARGV_NONE, /* MDOC_Ragged */
82: ARGV_NONE, /* MDOC_Unfilled */
83: ARGV_NONE, /* MDOC_Literal */
84: ARGV_NONE, /* MDOC_File */
85: ARGV_SINGLE, /* MDOC_Offset */
86: ARGV_NONE, /* MDOC_Bullet */
87: ARGV_NONE, /* MDOC_Dash */
88: ARGV_NONE, /* MDOC_Hyphen */
89: ARGV_NONE, /* MDOC_Item */
90: ARGV_NONE, /* MDOC_Enum */
91: ARGV_NONE, /* MDOC_Tag */
92: ARGV_NONE, /* MDOC_Diag */
93: ARGV_NONE, /* MDOC_Hang */
94: ARGV_NONE, /* MDOC_Ohang */
95: ARGV_NONE, /* MDOC_Inset */
96: ARGV_MULTI, /* MDOC_Column */
97: ARGV_SINGLE, /* MDOC_Width */
98: ARGV_NONE, /* MDOC_Compact */
99: ARGV_OPT_SINGLE, /* MDOC_Std */
100: ARGV_NONE, /* MDOC_Filled */
101: ARGV_NONE, /* MDOC_Words */
102: ARGV_NONE, /* MDOC_Emphasis */
103: ARGV_NONE, /* MDOC_Symbolic */
104: ARGV_NONE /* MDOC_Symbolic */
105: };
106:
107: static int mdoc_argflags[MDOC_MAX] = {
1.5 ! kristaps 108: 0, /* Ap */
1.1 kristaps 109: 0, /* Dd */
110: 0, /* Dt */
111: 0, /* Os */
112: ARGS_QUOTED, /* Sh */
113: ARGS_QUOTED, /* Ss */
114: ARGS_DELIM, /* Pp */
115: ARGS_DELIM, /* D1 */
116: ARGS_DELIM | ARGS_QUOTED, /* Dl */
117: 0, /* Bd */
118: 0, /* Ed */
119: 0, /* Bl */
120: 0, /* El */
121: 0, /* It */
122: ARGS_DELIM, /* Ad */
123: ARGS_DELIM, /* An */
124: ARGS_DELIM | ARGS_QUOTED, /* Ar */
125: ARGS_QUOTED, /* Cd */
126: ARGS_DELIM, /* Cm */
127: ARGS_DELIM, /* Dv */
128: ARGS_DELIM, /* Er */
129: ARGS_DELIM, /* Ev */
130: 0, /* Ex */
131: ARGS_DELIM | ARGS_QUOTED, /* Fa */
132: 0, /* Fd */
133: ARGS_DELIM, /* Fl */
134: ARGS_DELIM | ARGS_QUOTED, /* Fn */
135: ARGS_DELIM | ARGS_QUOTED, /* Ft */
136: ARGS_DELIM, /* Ic */
137: 0, /* In */
138: ARGS_DELIM | ARGS_QUOTED, /* Li */
139: ARGS_QUOTED, /* Nd */
140: ARGS_DELIM, /* Nm */
141: ARGS_DELIM, /* Op */
142: 0, /* Ot */
143: ARGS_DELIM, /* Pa */
144: 0, /* Rv */
145: ARGS_DELIM | ARGS_ARGVLIKE, /* St */
146: ARGS_DELIM, /* Va */
147: ARGS_DELIM, /* Vt */
148: ARGS_DELIM, /* Xr */
149: ARGS_QUOTED, /* %A */
150: ARGS_QUOTED, /* %B */
151: ARGS_QUOTED, /* %D */
152: ARGS_QUOTED, /* %I */
153: ARGS_QUOTED, /* %J */
154: ARGS_QUOTED, /* %N */
155: ARGS_QUOTED, /* %O */
156: ARGS_QUOTED, /* %P */
157: ARGS_QUOTED, /* %R */
158: ARGS_QUOTED, /* %T */
159: ARGS_QUOTED, /* %V */
160: ARGS_DELIM, /* Ac */
161: 0, /* Ao */
162: ARGS_DELIM, /* Aq */
163: ARGS_DELIM, /* At */
164: ARGS_DELIM, /* Bc */
165: 0, /* Bf */
166: 0, /* Bo */
167: ARGS_DELIM, /* Bq */
168: ARGS_DELIM, /* Bsx */
169: ARGS_DELIM, /* Bx */
170: 0, /* Db */
171: ARGS_DELIM, /* Dc */
172: 0, /* Do */
173: ARGS_DELIM, /* Dq */
174: ARGS_DELIM, /* Ec */
175: 0, /* Ef */
176: ARGS_DELIM, /* Em */
177: 0, /* Eo */
178: ARGS_DELIM, /* Fx */
179: ARGS_DELIM, /* Ms */
180: ARGS_DELIM, /* No */
181: ARGS_DELIM, /* Ns */
182: ARGS_DELIM, /* Nx */
183: ARGS_DELIM, /* Ox */
184: ARGS_DELIM, /* Pc */
185: ARGS_DELIM, /* Pf */
186: 0, /* Po */
187: ARGS_DELIM, /* Pq */
188: ARGS_DELIM, /* Qc */
189: ARGS_DELIM, /* Ql */
190: 0, /* Qo */
191: ARGS_DELIM, /* Qq */
192: 0, /* Re */
193: 0, /* Rs */
194: ARGS_DELIM, /* Sc */
195: 0, /* So */
196: ARGS_DELIM, /* Sq */
197: 0, /* Sm */
198: ARGS_DELIM, /* Sx */
199: ARGS_DELIM | ARGS_QUOTED, /* Sy */
200: ARGS_DELIM, /* Tn */
201: ARGS_DELIM, /* Ux */
202: ARGS_DELIM, /* Xc */
203: 0, /* Xo */
204: ARGS_QUOTED, /* Fo */
205: 0, /* Fc */
206: 0, /* Oo */
207: ARGS_DELIM, /* Oc */
208: 0, /* Bk */
209: 0, /* Ek */
210: 0, /* Bt */
211: 0, /* Hf */
212: 0, /* Fr */
213: 0, /* Ud */
214: 0, /* Lb */
215: ARGS_DELIM, /* Lp */
216: ARGS_DELIM | ARGS_QUOTED, /* Lk */
217: ARGS_DELIM | ARGS_QUOTED, /* Mt */
218: ARGS_DELIM, /* Brq */
219: 0, /* Bro */
220: ARGS_DELIM, /* Brc */
221: ARGS_QUOTED, /* %C */
222: 0, /* Es */
223: 0, /* En */
224: 0, /* Dx */
225: ARGS_QUOTED, /* %Q */
226: };
227:
228:
229: /*
230: * Parse an argument from line text. This comes in the form of -key
231: * [value0...], which may either have a single mandatory value, at least
232: * one mandatory value, an optional single value, or no value.
233: */
234: int
235: mdoc_argv(struct mdoc *mdoc, int line, int tok,
236: struct mdoc_arg **v, int *pos, char *buf)
237: {
238: int i;
239: char *p, sv;
240: struct mdoc_argv tmp;
241: struct mdoc_arg *arg;
242:
243: if (0 == buf[*pos])
244: return(ARGV_EOLN);
245:
246: assert(' ' != buf[*pos]);
247:
248: if ('-' != buf[*pos] || ARGS_ARGVLIKE & mdoc_argflags[tok])
249: return(ARGV_WORD);
250:
251: /* Parse through to the first unescaped space. */
252:
253: i = *pos;
254: p = &buf[++(*pos)];
255:
256: assert(*pos > 0);
257:
258: /* LINTED */
259: while (buf[*pos]) {
260: if (' ' == buf[*pos])
261: if ('\\' != buf[*pos - 1])
262: break;
263: (*pos)++;
264: }
265:
266: /* XXX - save zeroed byte, if not an argument. */
267:
268: sv = 0;
269: if (buf[*pos]) {
270: sv = buf[*pos];
271: buf[(*pos)++] = 0;
272: }
273:
274: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
275: tmp.line = line;
276: tmp.pos = *pos;
277:
278: /* See if our token accepts the argument. */
279:
280: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
281: /* XXX - restore saved zeroed byte. */
282: if (sv)
283: buf[*pos - 1] = sv;
284: if ( ! pwarn(mdoc, line, i, WARGVPARM))
285: return(ARGV_ERROR);
286: return(ARGV_WORD);
287: }
288:
289: while (buf[*pos] && ' ' == buf[*pos])
290: (*pos)++;
291:
292: if ( ! argv(mdoc, line, &tmp, pos, buf))
293: return(ARGV_ERROR);
294:
295: if (NULL == (arg = *v)) {
1.2 kristaps 296: *v = calloc(1, sizeof(struct mdoc_arg));
297: if (NULL == *v) {
298: (void)verr(mdoc, EMALLOC);
299: return(ARGV_ERROR);
300: }
1.1 kristaps 301: arg = *v;
302: }
303:
304: arg->argc++;
1.2 kristaps 305: arg->argv = realloc(arg->argv, arg->argc *
1.1 kristaps 306: sizeof(struct mdoc_argv));
307:
1.2 kristaps 308: if (NULL == arg->argv) {
309: (void)verr(mdoc, EMALLOC);
310: return(ARGV_ERROR);
311: }
312:
1.1 kristaps 313: (void)memcpy(&arg->argv[(int)arg->argc - 1],
314: &tmp, sizeof(struct mdoc_argv));
315:
316: return(ARGV_ARG);
317: }
318:
319:
320: void
321: mdoc_argv_free(struct mdoc_arg *p)
322: {
323: int i, j;
324:
325: if (NULL == p)
326: return;
327:
328: if (p->refcnt) {
329: --(p->refcnt);
330: if (p->refcnt)
331: return;
332: }
333: assert(p->argc);
334:
335: /* LINTED */
336: for (i = 0; i < (int)p->argc; i++) {
337: if (0 == p->argv[i].sz)
338: continue;
339: /* LINTED */
340: for (j = 0; j < (int)p->argv[i].sz; j++)
341: free(p->argv[i].value[j]);
342:
343: free(p->argv[i].value);
344: }
345:
346: free(p->argv);
347: free(p);
348: }
349:
350:
351:
352: static int
353: perr(struct mdoc *mdoc, int line, int pos, enum merr code)
354: {
355: char *p;
356:
357: p = NULL;
358: switch (code) {
1.2 kristaps 359: case (EMALLOC):
360: p = "memory exhausted";
361: break;
1.1 kristaps 362: case (EQUOTTERM):
363: p = "unterminated quoted parameter";
364: break;
365: case (EARGVAL):
366: p = "argument requires a value";
367: break;
368: }
369: assert(p);
370: return(mdoc_perr(mdoc, line, pos, p));
371: }
372:
373:
374: static int
375: pwarn(struct mdoc *mdoc, int line, int pos, enum mwarn code)
376: {
377: char *p;
378: int c;
379:
380: p = NULL;
381: c = WARN_SYNTAX;
382: switch (code) {
383: case (WQUOTPARM):
384: p = "unexpected quoted parameter";
385: break;
386: case (WARGVPARM):
387: p = "argument-like parameter";
388: break;
389: case (WCOLEMPTY):
390: p = "last list column is empty";
391: c = WARN_COMPAT;
392: break;
393: case (WTAILWS):
394: p = "trailing whitespace";
395: c = WARN_COMPAT;
396: break;
397: }
398: assert(p);
399: return(mdoc_pwarn(mdoc, line, pos, c, p));
400: }
401:
402:
403: int
404: mdoc_args(struct mdoc *mdoc, int line,
405: int *pos, char *buf, int tok, char **v)
406: {
407: int fl, c, i;
408: struct mdoc_node *n;
409:
410: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
411:
412: /*
413: * Override per-macro argument flags with context-specific ones.
414: * As of now, this is only valid for `It' depending on its list
415: * context.
416: */
417:
418: switch (tok) {
419: case (MDOC_It):
420: for (n = mdoc->last; n; n = n->parent)
421: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
422: break;
423:
424: assert(n);
425: c = (int)(n->args ? n->args->argc : 0);
426: assert(c > 0);
427:
428: /*
429: * Using `Bl -column' adds ARGS_TABSEP to the arguments
430: * and invalidates ARGS_DELIM. Using `Bl -diag' allows
431: * for quoted arguments.
432: */
433:
434: /* LINTED */
435: for (i = 0; i < c; i++) {
436: switch (n->args->argv[i].arg) {
437: case (MDOC_Column):
438: fl |= ARGS_TABSEP;
439: fl &= ~ARGS_DELIM;
440: i = c;
441: break;
442: case (MDOC_Diag):
443: fl |= ARGS_QUOTED;
444: i = c;
445: break;
446: default:
447: break;
448: }
449: }
450: break;
451: default:
452: break;
453: }
454:
455: return(args(mdoc, line, pos, buf, fl, v));
456: }
457:
458:
459: static int
460: args(struct mdoc *mdoc, int line,
461: int *pos, char *buf, int fl, char **v)
462: {
463: int i;
464: char *p, *pp;
465:
466: assert(*pos > 0);
467:
468: if (0 == buf[*pos])
469: return(ARGS_EOLN);
470:
471: if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
472: if ( ! pwarn(mdoc, line, *pos, WQUOTPARM))
473: return(ARGS_ERROR);
474:
475: if ( ! (fl & ARGS_ARGVLIKE) && '-' == buf[*pos])
476: if ( ! pwarn(mdoc, line, *pos, WARGVPARM))
477: return(ARGS_ERROR);
478:
479: /*
480: * If the first character is a delimiter and we're to look for
481: * delimited strings, then pass down the buffer seeing if it
482: * follows the pattern of [[::delim::][ ]+]+.
483: */
484:
485: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
486: for (i = *pos; buf[i]; ) {
487: if ( ! mdoc_iscdelim(buf[i]))
488: break;
489: i++;
490: /* There must be at least one space... */
491: if (0 == buf[i] || ' ' != buf[i])
492: break;
493: i++;
494: while (buf[i] && ' ' == buf[i])
495: i++;
496: }
497: if (0 == buf[i]) {
498: *v = &buf[*pos];
499: return(ARGS_PUNCT);
500: }
501: }
502:
503: /* First parse non-quoted strings. */
504:
505: if ('\"' != buf[*pos] || ! (ARGS_QUOTED & fl)) {
506: *v = &buf[*pos];
507:
508: /*
509: * Thar be dragons here! If we're tab-separated, search
510: * ahead for either a tab or the `Ta' macro.
511: * If a `Ta' is detected, it must be space-buffered before and
512: * after. If either of these hold true, then prune out the
513: * extra spaces and call it an argument.
514: */
515:
516: if (ARGS_TABSEP & fl) {
517: /* Scan ahead to unescaped tab. */
518:
519: p = strchr(*v, '\t');
520:
521: /* Scan ahead to unescaped `Ta'. */
522:
523: for (pp = *v; ; pp++) {
524: if (NULL == (pp = strstr(pp, "Ta")))
525: break;
526: if (pp > *v && ' ' != *(pp - 1))
527: continue;
528: if (' ' == *(pp + 2) || 0 == *(pp + 2))
529: break;
530: }
531:
532: /* Choose delimiter tab/Ta. */
533:
534: if (p && pp)
535: p = (p < pp ? p : pp);
536: else if ( ! p && pp)
537: p = pp;
538:
539: /* Strip delimiter's preceding whitespace. */
540:
541: if (p && p > *v) {
542: pp = p - 1;
543: while (pp > *v && ' ' == *pp)
544: pp--;
545: if (pp == *v && ' ' == *pp)
546: *pp = 0;
547: else if (' ' == *pp)
548: *(pp + 1) = 0;
549: }
550:
551: /* ...in- and proceding whitespace. */
552:
553: if (p && ('\t' != *p)) {
554: *p++ = 0;
555: *p++ = 0;
556: } else if (p)
557: *p++ = 0;
558:
559: if (p) {
560: while (' ' == *p)
561: p++;
562: if (0 != *p)
563: *(p - 1) = 0;
564: *pos += (int)(p - *v);
565: }
566:
567: if (p && 0 == *p)
568: if ( ! pwarn(mdoc, line, *pos, WCOLEMPTY))
569: return(0);
570: if (p && 0 == *p && p > *v && ' ' == *(p - 1))
571: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
572: return(0);
573:
574: if (p)
575: return(ARGS_PHRASE);
576:
577: /* Configure the eoln case, too. */
578:
579: p = strchr(*v, 0);
580: assert(p);
581:
582: if (p > *v && ' ' == *(p - 1))
583: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
584: return(0);
585: *pos += (int)(p - *v);
586:
587: return(ARGS_PHRASE);
588: }
589:
590: /* Do non-tabsep look-ahead here. */
591:
592: if ( ! (ARGS_TABSEP & fl))
593: while (buf[*pos]) {
594: if (' ' == buf[*pos])
595: if ('\\' != buf[*pos - 1])
596: break;
597: (*pos)++;
598: }
599:
600: if (0 == buf[*pos])
601: return(ARGS_WORD);
602:
603: buf[(*pos)++] = 0;
604:
605: if (0 == buf[*pos])
606: return(ARGS_WORD);
607:
608: if ( ! (ARGS_TABSEP & fl))
609: while (buf[*pos] && ' ' == buf[*pos])
610: (*pos)++;
611:
612: if (buf[*pos])
613: return(ARGS_WORD);
614:
615: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
616: return(ARGS_ERROR);
617:
618: return(ARGS_WORD);
619: }
620:
621: /*
622: * If we're a quoted string (and quoted strings are allowed),
623: * then parse ahead to the next quote. If none's found, it's an
624: * error. After, parse to the next word.
625: */
626:
627: *v = &buf[++(*pos)];
628:
629: while (buf[*pos] && '\"' != buf[*pos])
630: (*pos)++;
631:
632: if (0 == buf[*pos]) {
633: (void)perr(mdoc, line, *pos, EQUOTTERM);
634: return(ARGS_ERROR);
635: }
636:
637: buf[(*pos)++] = 0;
638: if (0 == buf[*pos])
639: return(ARGS_QWORD);
640:
641: while (buf[*pos] && ' ' == buf[*pos])
642: (*pos)++;
643:
644: if (buf[*pos])
645: return(ARGS_QWORD);
646:
647: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
648: return(ARGS_ERROR);
649:
650: return(ARGS_QWORD);
651: }
652:
653:
654: static int
655: argv_a2arg(int tok, const char *argv)
656: {
657:
658: /*
659: * Parse an argument identifier from its text. XXX - this
660: * should really be table-driven to clarify the code.
661: *
662: * If you add an argument to the list, make sure that you
663: * register it here with its one or more macros!
664: */
665:
666: switch (tok) {
667: case (MDOC_An):
1.2 kristaps 668: if (0 == strcmp(argv, "split"))
1.1 kristaps 669: return(MDOC_Split);
1.2 kristaps 670: else if (0 == strcmp(argv, "nosplit"))
1.1 kristaps 671: return(MDOC_Nosplit);
672: break;
673:
674: case (MDOC_Bd):
1.2 kristaps 675: if (0 == strcmp(argv, "ragged"))
1.1 kristaps 676: return(MDOC_Ragged);
1.2 kristaps 677: else if (0 == strcmp(argv, "unfilled"))
1.1 kristaps 678: return(MDOC_Unfilled);
1.2 kristaps 679: else if (0 == strcmp(argv, "filled"))
1.1 kristaps 680: return(MDOC_Filled);
1.2 kristaps 681: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 682: return(MDOC_Literal);
1.2 kristaps 683: else if (0 == strcmp(argv, "file"))
1.1 kristaps 684: return(MDOC_File);
1.2 kristaps 685: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 686: return(MDOC_Offset);
1.2 kristaps 687: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 688: return(MDOC_Compact);
689: break;
690:
691: case (MDOC_Bf):
1.2 kristaps 692: if (0 == strcmp(argv, "emphasis"))
1.1 kristaps 693: return(MDOC_Emphasis);
1.2 kristaps 694: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 695: return(MDOC_Literal);
1.2 kristaps 696: else if (0 == strcmp(argv, "symbolic"))
1.1 kristaps 697: return(MDOC_Symbolic);
698: break;
699:
700: case (MDOC_Bk):
1.2 kristaps 701: if (0 == strcmp(argv, "words"))
1.1 kristaps 702: return(MDOC_Words);
703: break;
704:
705: case (MDOC_Bl):
1.2 kristaps 706: if (0 == strcmp(argv, "bullet"))
1.1 kristaps 707: return(MDOC_Bullet);
1.2 kristaps 708: else if (0 == strcmp(argv, "dash"))
1.1 kristaps 709: return(MDOC_Dash);
1.2 kristaps 710: else if (0 == strcmp(argv, "hyphen"))
1.1 kristaps 711: return(MDOC_Hyphen);
1.2 kristaps 712: else if (0 == strcmp(argv, "item"))
1.1 kristaps 713: return(MDOC_Item);
1.2 kristaps 714: else if (0 == strcmp(argv, "enum"))
1.1 kristaps 715: return(MDOC_Enum);
1.2 kristaps 716: else if (0 == strcmp(argv, "tag"))
1.1 kristaps 717: return(MDOC_Tag);
1.2 kristaps 718: else if (0 == strcmp(argv, "diag"))
1.1 kristaps 719: return(MDOC_Diag);
1.2 kristaps 720: else if (0 == strcmp(argv, "hang"))
1.1 kristaps 721: return(MDOC_Hang);
1.2 kristaps 722: else if (0 == strcmp(argv, "ohang"))
1.1 kristaps 723: return(MDOC_Ohang);
1.2 kristaps 724: else if (0 == strcmp(argv, "inset"))
1.1 kristaps 725: return(MDOC_Inset);
1.2 kristaps 726: else if (0 == strcmp(argv, "column"))
1.1 kristaps 727: return(MDOC_Column);
1.2 kristaps 728: else if (0 == strcmp(argv, "width"))
1.1 kristaps 729: return(MDOC_Width);
1.2 kristaps 730: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 731: return(MDOC_Offset);
1.2 kristaps 732: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 733: return(MDOC_Compact);
1.2 kristaps 734: else if (0 == strcmp(argv, "nested"))
1.1 kristaps 735: return(MDOC_Nested);
736: break;
737:
738: case (MDOC_Rv):
739: /* FALLTHROUGH */
740: case (MDOC_Ex):
1.2 kristaps 741: if (0 == strcmp(argv, "std"))
1.1 kristaps 742: return(MDOC_Std);
743: break;
744: default:
745: break;
746: }
747:
748: return(MDOC_ARG_MAX);
749: }
750:
751:
752: static int
753: argv_multi(struct mdoc *mdoc, int line,
754: struct mdoc_argv *v, int *pos, char *buf)
755: {
756: int c, ppos;
757: char *p;
758:
759: ppos = *pos;
760:
761: for (v->sz = 0; ; v->sz++) {
762: if ('-' == buf[*pos])
763: break;
764: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
765: if (ARGS_ERROR == c)
766: return(0);
767: else if (ARGS_EOLN == c)
768: break;
769:
1.2 kristaps 770: if (0 == v->sz % MULTI_STEP) {
771: v->value = realloc(v->value,
1.1 kristaps 772: (v->sz + MULTI_STEP) * sizeof(char *));
1.2 kristaps 773: if (NULL == v->value) {
774: (void)verr(mdoc, EMALLOC);
775: return(ARGV_ERROR);
776: }
777: }
1.1 kristaps 778: if (NULL == (v->value[(int)v->sz] = strdup(p)))
1.2 kristaps 779: return(verr(mdoc, EMALLOC));
1.1 kristaps 780: }
781:
782: if (v->sz)
783: return(1);
784:
785: return(perr(mdoc, line, ppos, EARGVAL));
786: }
787:
788:
789: static int
790: argv_opt_single(struct mdoc *mdoc, int line,
791: struct mdoc_argv *v, int *pos, char *buf)
792: {
793: int c;
794: char *p;
795:
796: if ('-' == buf[*pos])
797: return(1);
798:
799: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
800: if (ARGS_ERROR == c)
801: return(0);
802: if (ARGS_EOLN == c)
803: return(1);
804:
805: v->sz = 1;
806: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.2 kristaps 807: return(verr(mdoc, EMALLOC));
1.1 kristaps 808: if (NULL == (v->value[0] = strdup(p)))
1.2 kristaps 809: return(verr(mdoc, EMALLOC));
810:
1.1 kristaps 811: return(1);
812: }
813:
814:
815: /*
816: * Parse a single, mandatory value from the stream.
817: */
818: static int
819: argv_single(struct mdoc *mdoc, int line,
820: struct mdoc_argv *v, int *pos, char *buf)
821: {
822: int c, ppos;
823: char *p;
824:
825: ppos = *pos;
826:
827: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
828: if (ARGS_ERROR == c)
829: return(0);
830: if (ARGS_EOLN == c)
831: return(perr(mdoc, line, ppos, EARGVAL));
832:
833: v->sz = 1;
834: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.2 kristaps 835: return(verr(mdoc, EMALLOC));
1.1 kristaps 836: if (NULL == (v->value[0] = strdup(p)))
1.2 kristaps 837: return(verr(mdoc, EMALLOC));
838:
1.1 kristaps 839: return(1);
840: }
841:
842:
843: /*
844: * Determine rules for parsing arguments. Arguments can either accept
845: * no parameters, an optional single parameter, one parameter, or
846: * multiple parameters.
847: */
848: static int
849: argv(struct mdoc *mdoc, int line,
850: struct mdoc_argv *v, int *pos, char *buf)
851: {
852:
853: v->sz = 0;
854: v->value = NULL;
855:
856: switch (mdoc_argvflags[v->arg]) {
857: case (ARGV_SINGLE):
858: return(argv_single(mdoc, line, v, pos, buf));
859: case (ARGV_MULTI):
860: return(argv_multi(mdoc, line, v, pos, buf));
861: case (ARGV_OPT_SINGLE):
862: return(argv_opt_single(mdoc, line, v, pos, buf));
863: default:
864: /* ARGV_NONE */
865: break;
866: }
867:
868: return(1);
869: }