Annotation of src/usr.bin/mandoc/mdoc_argv.c, Revision 1.5
1.5 ! schwarze 1: /* $Id: mdoc_argv.c,v 1.4 2009/06/21 19:09:58 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"
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:
1.4 schwarze 35: /* FIXME .Bf Li raises "macro-like parameter". */
36: /* FIXME .Bl -column should deprecate old-groff syntax. */
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: enum mwarn {
51: WQUOTPARM,
52: WARGVPARM,
53: WCOLEMPTY,
54: WTAILWS
55: };
56:
57: static int argv_a2arg(int, const char *);
58: static int args(struct mdoc *, int, int *,
59: char *, int, char **);
60: static int argv(struct mdoc *, int,
61: struct mdoc_argv *, int *, char *);
62: static int argv_single(struct mdoc *, int,
63: struct mdoc_argv *, int *, char *);
64: static int argv_opt_single(struct mdoc *, int,
65: struct mdoc_argv *, int *, char *);
66: static int argv_multi(struct mdoc *, int,
67: struct mdoc_argv *, int *, char *);
68: static int pwarn(struct mdoc *, int, int, enum mwarn);
69: static int perr(struct mdoc *, int, int, enum merr);
70:
71: #define verr(m, t) perr((m), (m)->last->line, (m)->last->pos, (t))
72:
73: /* Per-argument flags. */
74:
75: static int mdoc_argvflags[MDOC_ARG_MAX] = {
76: ARGV_NONE, /* MDOC_Split */
77: ARGV_NONE, /* MDOC_Nosplit */
78: ARGV_NONE, /* MDOC_Ragged */
79: ARGV_NONE, /* MDOC_Unfilled */
80: ARGV_NONE, /* MDOC_Literal */
81: ARGV_NONE, /* MDOC_File */
82: ARGV_SINGLE, /* MDOC_Offset */
83: ARGV_NONE, /* MDOC_Bullet */
84: ARGV_NONE, /* MDOC_Dash */
85: ARGV_NONE, /* MDOC_Hyphen */
86: ARGV_NONE, /* MDOC_Item */
87: ARGV_NONE, /* MDOC_Enum */
88: ARGV_NONE, /* MDOC_Tag */
89: ARGV_NONE, /* MDOC_Diag */
90: ARGV_NONE, /* MDOC_Hang */
91: ARGV_NONE, /* MDOC_Ohang */
92: ARGV_NONE, /* MDOC_Inset */
93: ARGV_MULTI, /* MDOC_Column */
94: ARGV_SINGLE, /* MDOC_Width */
95: ARGV_NONE, /* MDOC_Compact */
96: ARGV_OPT_SINGLE, /* MDOC_Std */
97: ARGV_NONE, /* MDOC_Filled */
98: ARGV_NONE, /* MDOC_Words */
99: ARGV_NONE, /* MDOC_Emphasis */
100: ARGV_NONE, /* MDOC_Symbolic */
101: ARGV_NONE /* MDOC_Symbolic */
102: };
103:
104: static int mdoc_argflags[MDOC_MAX] = {
1.3 schwarze 105: 0, /* Ap */
1.1 kristaps 106: 0, /* Dd */
107: 0, /* Dt */
108: 0, /* Os */
109: ARGS_QUOTED, /* Sh */
110: ARGS_QUOTED, /* Ss */
111: ARGS_DELIM, /* Pp */
112: ARGS_DELIM, /* D1 */
113: ARGS_DELIM | ARGS_QUOTED, /* Dl */
114: 0, /* Bd */
115: 0, /* Ed */
1.4 schwarze 116: ARGS_QUOTED, /* Bl */
1.1 kristaps 117: 0, /* El */
118: 0, /* It */
119: ARGS_DELIM, /* Ad */
120: ARGS_DELIM, /* An */
121: ARGS_DELIM | ARGS_QUOTED, /* Ar */
122: ARGS_QUOTED, /* Cd */
123: ARGS_DELIM, /* Cm */
124: ARGS_DELIM, /* Dv */
125: ARGS_DELIM, /* Er */
126: ARGS_DELIM, /* Ev */
127: 0, /* Ex */
128: ARGS_DELIM | ARGS_QUOTED, /* Fa */
129: 0, /* Fd */
130: ARGS_DELIM, /* Fl */
131: ARGS_DELIM | ARGS_QUOTED, /* Fn */
132: ARGS_DELIM | ARGS_QUOTED, /* Ft */
133: ARGS_DELIM, /* Ic */
134: 0, /* In */
135: ARGS_DELIM | ARGS_QUOTED, /* Li */
136: ARGS_QUOTED, /* Nd */
137: ARGS_DELIM, /* Nm */
138: ARGS_DELIM, /* Op */
139: 0, /* Ot */
140: ARGS_DELIM, /* Pa */
141: 0, /* Rv */
142: ARGS_DELIM | ARGS_ARGVLIKE, /* St */
143: ARGS_DELIM, /* Va */
144: ARGS_DELIM, /* Vt */
145: ARGS_DELIM, /* Xr */
146: ARGS_QUOTED, /* %A */
147: ARGS_QUOTED, /* %B */
148: ARGS_QUOTED, /* %D */
149: ARGS_QUOTED, /* %I */
150: ARGS_QUOTED, /* %J */
151: ARGS_QUOTED, /* %N */
152: ARGS_QUOTED, /* %O */
153: ARGS_QUOTED, /* %P */
154: ARGS_QUOTED, /* %R */
155: ARGS_QUOTED, /* %T */
156: ARGS_QUOTED, /* %V */
157: ARGS_DELIM, /* Ac */
158: 0, /* Ao */
159: ARGS_DELIM, /* Aq */
160: ARGS_DELIM, /* At */
161: ARGS_DELIM, /* Bc */
162: 0, /* Bf */
163: 0, /* Bo */
164: ARGS_DELIM, /* Bq */
165: ARGS_DELIM, /* Bsx */
166: ARGS_DELIM, /* Bx */
167: 0, /* Db */
168: ARGS_DELIM, /* Dc */
169: 0, /* Do */
170: ARGS_DELIM, /* Dq */
171: ARGS_DELIM, /* Ec */
172: 0, /* Ef */
173: ARGS_DELIM, /* Em */
174: 0, /* Eo */
175: ARGS_DELIM, /* Fx */
176: ARGS_DELIM, /* Ms */
177: ARGS_DELIM, /* No */
178: ARGS_DELIM, /* Ns */
179: ARGS_DELIM, /* Nx */
180: ARGS_DELIM, /* Ox */
181: ARGS_DELIM, /* Pc */
182: ARGS_DELIM, /* Pf */
183: 0, /* Po */
184: ARGS_DELIM, /* Pq */
185: ARGS_DELIM, /* Qc */
186: ARGS_DELIM, /* Ql */
187: 0, /* Qo */
188: ARGS_DELIM, /* Qq */
189: 0, /* Re */
190: 0, /* Rs */
191: ARGS_DELIM, /* Sc */
192: 0, /* So */
193: ARGS_DELIM, /* Sq */
194: 0, /* Sm */
195: ARGS_DELIM, /* Sx */
196: ARGS_DELIM | ARGS_QUOTED, /* Sy */
197: ARGS_DELIM, /* Tn */
198: ARGS_DELIM, /* Ux */
199: ARGS_DELIM, /* Xc */
200: 0, /* Xo */
201: ARGS_QUOTED, /* Fo */
202: 0, /* Fc */
203: 0, /* Oo */
204: ARGS_DELIM, /* Oc */
205: 0, /* Bk */
206: 0, /* Ek */
207: 0, /* Bt */
208: 0, /* Hf */
209: 0, /* Fr */
210: 0, /* Ud */
211: 0, /* Lb */
212: ARGS_DELIM, /* Lp */
213: ARGS_DELIM | ARGS_QUOTED, /* Lk */
214: ARGS_DELIM | ARGS_QUOTED, /* Mt */
215: ARGS_DELIM, /* Brq */
216: 0, /* Bro */
217: ARGS_DELIM, /* Brc */
218: ARGS_QUOTED, /* %C */
219: 0, /* Es */
220: 0, /* En */
221: 0, /* Dx */
222: ARGS_QUOTED, /* %Q */
223: };
224:
225:
226: /*
227: * Parse an argument from line text. This comes in the form of -key
228: * [value0...], which may either have a single mandatory value, at least
229: * one mandatory value, an optional single value, or no value.
230: */
231: int
232: mdoc_argv(struct mdoc *mdoc, int line, int tok,
233: struct mdoc_arg **v, int *pos, char *buf)
234: {
235: int i;
236: char *p, sv;
237: struct mdoc_argv tmp;
238: struct mdoc_arg *arg;
239:
240: if (0 == buf[*pos])
241: return(ARGV_EOLN);
242:
243: assert(' ' != buf[*pos]);
244:
245: if ('-' != buf[*pos] || ARGS_ARGVLIKE & mdoc_argflags[tok])
246: return(ARGV_WORD);
247:
248: /* Parse through to the first unescaped space. */
249:
250: i = *pos;
251: p = &buf[++(*pos)];
252:
253: assert(*pos > 0);
254:
255: /* LINTED */
256: while (buf[*pos]) {
257: if (' ' == buf[*pos])
258: if ('\\' != buf[*pos - 1])
259: break;
260: (*pos)++;
261: }
262:
263: /* XXX - save zeroed byte, if not an argument. */
264:
265: sv = 0;
266: if (buf[*pos]) {
267: sv = buf[*pos];
268: buf[(*pos)++] = 0;
269: }
270:
271: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
272: tmp.line = line;
273: tmp.pos = *pos;
274:
275: /* See if our token accepts the argument. */
276:
277: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
278: /* XXX - restore saved zeroed byte. */
279: if (sv)
280: buf[*pos - 1] = sv;
281: if ( ! pwarn(mdoc, line, i, WARGVPARM))
282: return(ARGV_ERROR);
283: return(ARGV_WORD);
284: }
285:
286: while (buf[*pos] && ' ' == buf[*pos])
287: (*pos)++;
288:
289: if ( ! argv(mdoc, line, &tmp, pos, buf))
290: return(ARGV_ERROR);
291:
292: if (NULL == (arg = *v)) {
293: *v = calloc(1, sizeof(struct mdoc_arg));
294: if (NULL == *v) {
295: (void)verr(mdoc, EMALLOC);
296: return(ARGV_ERROR);
297: }
298: arg = *v;
299: }
300:
301: arg->argc++;
302: arg->argv = realloc(arg->argv, arg->argc *
303: sizeof(struct mdoc_argv));
304:
305: if (NULL == arg->argv) {
306: (void)verr(mdoc, EMALLOC);
307: return(ARGV_ERROR);
308: }
309:
310: (void)memcpy(&arg->argv[(int)arg->argc - 1],
311: &tmp, sizeof(struct mdoc_argv));
312:
313: return(ARGV_ARG);
314: }
315:
316:
317: void
318: mdoc_argv_free(struct mdoc_arg *p)
319: {
320: int i, j;
321:
322: if (NULL == p)
323: return;
324:
325: if (p->refcnt) {
326: --(p->refcnt);
327: if (p->refcnt)
328: return;
329: }
330: assert(p->argc);
331:
332: /* LINTED */
333: for (i = 0; i < (int)p->argc; i++) {
334: if (0 == p->argv[i].sz)
335: continue;
336: /* LINTED */
337: for (j = 0; j < (int)p->argv[i].sz; j++)
338: free(p->argv[i].value[j]);
339:
340: free(p->argv[i].value);
341: }
342:
343: free(p->argv);
344: free(p);
345: }
346:
347:
348:
349: static int
350: perr(struct mdoc *mdoc, int line, int pos, enum merr code)
351: {
352: char *p;
353:
354: p = NULL;
355: switch (code) {
356: case (EMALLOC):
357: p = "memory exhausted";
358: break;
359: case (EQUOTTERM):
360: p = "unterminated quoted parameter";
361: break;
362: case (EARGVAL):
363: p = "argument requires a value";
364: break;
365: }
366: assert(p);
367: return(mdoc_perr(mdoc, line, pos, p));
368: }
369:
370:
371: static int
372: pwarn(struct mdoc *mdoc, int line, int pos, enum mwarn code)
373: {
374: char *p;
375: int c;
376:
377: p = NULL;
378: c = WARN_SYNTAX;
379: switch (code) {
380: case (WQUOTPARM):
381: p = "unexpected quoted parameter";
382: break;
383: case (WARGVPARM):
384: p = "argument-like parameter";
385: break;
386: case (WCOLEMPTY):
387: p = "last list column is empty";
388: c = WARN_COMPAT;
389: break;
390: case (WTAILWS):
391: p = "trailing whitespace";
392: c = WARN_COMPAT;
393: break;
394: }
395: assert(p);
396: return(mdoc_pwarn(mdoc, line, pos, c, p));
397: }
398:
399:
400: int
401: mdoc_args(struct mdoc *mdoc, int line,
402: int *pos, char *buf, int tok, char **v)
403: {
404: int fl, c, i;
405: struct mdoc_node *n;
406:
407: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
408:
409: /*
410: * Override per-macro argument flags with context-specific ones.
411: * As of now, this is only valid for `It' depending on its list
412: * context.
413: */
414:
415: switch (tok) {
416: case (MDOC_It):
417: for (n = mdoc->last; n; n = n->parent)
418: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
419: break;
420:
421: assert(n);
422: c = (int)(n->args ? n->args->argc : 0);
423: assert(c > 0);
424:
425: /*
426: * Using `Bl -column' adds ARGS_TABSEP to the arguments
427: * and invalidates ARGS_DELIM. Using `Bl -diag' allows
428: * for quoted arguments.
429: */
430:
431: /* LINTED */
432: for (i = 0; i < c; i++) {
433: switch (n->args->argv[i].arg) {
434: case (MDOC_Column):
435: fl |= ARGS_TABSEP;
436: fl &= ~ARGS_DELIM;
437: i = c;
438: break;
439: case (MDOC_Diag):
440: fl |= ARGS_QUOTED;
441: i = c;
442: break;
443: default:
444: break;
445: }
446: }
447: break;
448: default:
449: break;
450: }
451:
452: return(args(mdoc, line, pos, buf, fl, v));
453: }
454:
455:
456: static int
457: args(struct mdoc *mdoc, int line,
458: int *pos, char *buf, int fl, char **v)
459: {
460: int i;
461: char *p, *pp;
462:
463: assert(*pos > 0);
464:
465: if (0 == buf[*pos])
466: return(ARGS_EOLN);
467:
468: if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
469: if ( ! pwarn(mdoc, line, *pos, WQUOTPARM))
470: return(ARGS_ERROR);
471:
472: if ( ! (fl & ARGS_ARGVLIKE) && '-' == buf[*pos])
473: if ( ! pwarn(mdoc, line, *pos, WARGVPARM))
474: return(ARGS_ERROR);
475:
476: /*
477: * If the first character is a delimiter and we're to look for
478: * delimited strings, then pass down the buffer seeing if it
479: * follows the pattern of [[::delim::][ ]+]+.
480: */
481:
482: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
483: for (i = *pos; buf[i]; ) {
484: if ( ! mdoc_iscdelim(buf[i]))
485: break;
486: i++;
487: /* There must be at least one space... */
488: if (0 == buf[i] || ' ' != buf[i])
489: break;
490: i++;
491: while (buf[i] && ' ' == buf[i])
492: i++;
493: }
494: if (0 == buf[i]) {
495: *v = &buf[*pos];
496: return(ARGS_PUNCT);
497: }
498: }
499:
500: /* First parse non-quoted strings. */
501:
502: if ('\"' != buf[*pos] || ! (ARGS_QUOTED & fl)) {
503: *v = &buf[*pos];
504:
505: /*
506: * Thar be dragons here! If we're tab-separated, search
507: * ahead for either a tab or the `Ta' macro.
508: * If a `Ta' is detected, it must be space-buffered before and
509: * after. If either of these hold true, then prune out the
510: * extra spaces and call it an argument.
511: */
512:
513: if (ARGS_TABSEP & fl) {
514: /* Scan ahead to unescaped tab. */
515:
516: p = strchr(*v, '\t');
517:
518: /* Scan ahead to unescaped `Ta'. */
519:
520: for (pp = *v; ; pp++) {
521: if (NULL == (pp = strstr(pp, "Ta")))
522: break;
523: if (pp > *v && ' ' != *(pp - 1))
524: continue;
525: if (' ' == *(pp + 2) || 0 == *(pp + 2))
526: break;
527: }
528:
529: /* Choose delimiter tab/Ta. */
530:
531: if (p && pp)
532: p = (p < pp ? p : pp);
533: else if ( ! p && pp)
534: p = pp;
535:
536: /* Strip delimiter's preceding whitespace. */
537:
538: if (p && p > *v) {
539: pp = p - 1;
540: while (pp > *v && ' ' == *pp)
541: pp--;
542: if (pp == *v && ' ' == *pp)
543: *pp = 0;
544: else if (' ' == *pp)
545: *(pp + 1) = 0;
546: }
547:
548: /* ...in- and proceding whitespace. */
549:
550: if (p && ('\t' != *p)) {
551: *p++ = 0;
552: *p++ = 0;
553: } else if (p)
554: *p++ = 0;
555:
556: if (p) {
557: while (' ' == *p)
558: p++;
559: if (0 != *p)
560: *(p - 1) = 0;
561: *pos += (int)(p - *v);
562: }
563:
564: if (p && 0 == *p)
565: if ( ! pwarn(mdoc, line, *pos, WCOLEMPTY))
566: return(0);
567: if (p && 0 == *p && p > *v && ' ' == *(p - 1))
568: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
569: return(0);
570:
571: if (p)
572: return(ARGS_PHRASE);
573:
574: /* Configure the eoln case, too. */
575:
576: p = strchr(*v, 0);
577: assert(p);
578:
579: if (p > *v && ' ' == *(p - 1))
580: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
581: return(0);
582: *pos += (int)(p - *v);
583:
584: return(ARGS_PHRASE);
585: }
586:
587: /* Do non-tabsep look-ahead here. */
588:
589: if ( ! (ARGS_TABSEP & fl))
590: while (buf[*pos]) {
591: if (' ' == buf[*pos])
592: if ('\\' != buf[*pos - 1])
593: break;
594: (*pos)++;
595: }
596:
597: if (0 == buf[*pos])
598: return(ARGS_WORD);
599:
600: buf[(*pos)++] = 0;
601:
602: if (0 == buf[*pos])
603: return(ARGS_WORD);
604:
605: if ( ! (ARGS_TABSEP & fl))
606: while (buf[*pos] && ' ' == buf[*pos])
607: (*pos)++;
608:
609: if (buf[*pos])
610: return(ARGS_WORD);
611:
612: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
613: return(ARGS_ERROR);
614:
615: return(ARGS_WORD);
616: }
617:
618: /*
619: * If we're a quoted string (and quoted strings are allowed),
620: * then parse ahead to the next quote. If none's found, it's an
621: * error. After, parse to the next word.
622: */
623:
624: *v = &buf[++(*pos)];
625:
626: while (buf[*pos] && '\"' != buf[*pos])
627: (*pos)++;
628:
629: if (0 == buf[*pos]) {
630: (void)perr(mdoc, line, *pos, EQUOTTERM);
631: return(ARGS_ERROR);
632: }
633:
634: buf[(*pos)++] = 0;
635: if (0 == buf[*pos])
636: return(ARGS_QWORD);
637:
638: while (buf[*pos] && ' ' == buf[*pos])
639: (*pos)++;
640:
641: if (buf[*pos])
642: return(ARGS_QWORD);
643:
644: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
645: return(ARGS_ERROR);
646:
647: return(ARGS_QWORD);
648: }
649:
650:
651: static int
652: argv_a2arg(int tok, const char *argv)
653: {
654:
655: /*
656: * Parse an argument identifier from its text. XXX - this
657: * should really be table-driven to clarify the code.
658: *
659: * If you add an argument to the list, make sure that you
660: * register it here with its one or more macros!
661: */
662:
663: switch (tok) {
664: case (MDOC_An):
665: if (0 == strcmp(argv, "split"))
666: return(MDOC_Split);
667: else if (0 == strcmp(argv, "nosplit"))
668: return(MDOC_Nosplit);
669: break;
670:
671: case (MDOC_Bd):
672: if (0 == strcmp(argv, "ragged"))
673: return(MDOC_Ragged);
674: else if (0 == strcmp(argv, "unfilled"))
675: return(MDOC_Unfilled);
676: else if (0 == strcmp(argv, "filled"))
677: return(MDOC_Filled);
678: else if (0 == strcmp(argv, "literal"))
679: return(MDOC_Literal);
680: else if (0 == strcmp(argv, "file"))
681: return(MDOC_File);
682: else if (0 == strcmp(argv, "offset"))
683: return(MDOC_Offset);
684: else if (0 == strcmp(argv, "compact"))
685: return(MDOC_Compact);
686: break;
687:
688: case (MDOC_Bf):
689: if (0 == strcmp(argv, "emphasis"))
690: return(MDOC_Emphasis);
691: else if (0 == strcmp(argv, "literal"))
692: return(MDOC_Literal);
693: else if (0 == strcmp(argv, "symbolic"))
694: return(MDOC_Symbolic);
695: break;
696:
697: case (MDOC_Bk):
698: if (0 == strcmp(argv, "words"))
699: return(MDOC_Words);
700: break;
701:
702: case (MDOC_Bl):
703: if (0 == strcmp(argv, "bullet"))
704: return(MDOC_Bullet);
705: else if (0 == strcmp(argv, "dash"))
706: return(MDOC_Dash);
707: else if (0 == strcmp(argv, "hyphen"))
708: return(MDOC_Hyphen);
709: else if (0 == strcmp(argv, "item"))
710: return(MDOC_Item);
711: else if (0 == strcmp(argv, "enum"))
712: return(MDOC_Enum);
713: else if (0 == strcmp(argv, "tag"))
714: return(MDOC_Tag);
715: else if (0 == strcmp(argv, "diag"))
716: return(MDOC_Diag);
717: else if (0 == strcmp(argv, "hang"))
718: return(MDOC_Hang);
719: else if (0 == strcmp(argv, "ohang"))
720: return(MDOC_Ohang);
721: else if (0 == strcmp(argv, "inset"))
722: return(MDOC_Inset);
723: else if (0 == strcmp(argv, "column"))
724: return(MDOC_Column);
725: else if (0 == strcmp(argv, "width"))
726: return(MDOC_Width);
727: else if (0 == strcmp(argv, "offset"))
728: return(MDOC_Offset);
729: else if (0 == strcmp(argv, "compact"))
730: return(MDOC_Compact);
731: else if (0 == strcmp(argv, "nested"))
732: return(MDOC_Nested);
733: break;
734:
735: case (MDOC_Rv):
736: /* FALLTHROUGH */
737: case (MDOC_Ex):
738: if (0 == strcmp(argv, "std"))
739: return(MDOC_Std);
740: break;
741: default:
742: break;
743: }
744:
745: return(MDOC_ARG_MAX);
746: }
747:
748:
749: static int
750: argv_multi(struct mdoc *mdoc, int line,
751: struct mdoc_argv *v, int *pos, char *buf)
752: {
1.4 schwarze 753: int c;
1.1 kristaps 754: char *p;
755:
756: for (v->sz = 0; ; v->sz++) {
757: if ('-' == buf[*pos])
758: break;
759: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
760: if (ARGS_ERROR == c)
761: return(0);
762: else if (ARGS_EOLN == c)
763: break;
764:
765: if (0 == v->sz % MULTI_STEP) {
766: v->value = realloc(v->value,
767: (v->sz + MULTI_STEP) * sizeof(char *));
768: if (NULL == v->value) {
769: (void)verr(mdoc, EMALLOC);
770: return(ARGV_ERROR);
771: }
772: }
773: if (NULL == (v->value[(int)v->sz] = strdup(p)))
774: return(verr(mdoc, EMALLOC));
775: }
776:
1.4 schwarze 777: return(1);
1.1 kristaps 778: }
779:
780:
781: static int
782: argv_opt_single(struct mdoc *mdoc, int line,
783: struct mdoc_argv *v, int *pos, char *buf)
784: {
785: int c;
786: char *p;
787:
788: if ('-' == buf[*pos])
789: return(1);
790:
791: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
792: if (ARGS_ERROR == c)
793: return(0);
794: if (ARGS_EOLN == c)
795: return(1);
796:
797: v->sz = 1;
798: if (NULL == (v->value = calloc(1, sizeof(char *))))
799: return(verr(mdoc, EMALLOC));
800: if (NULL == (v->value[0] = strdup(p)))
801: return(verr(mdoc, EMALLOC));
802:
803: return(1);
804: }
805:
806:
807: /*
808: * Parse a single, mandatory value from the stream.
809: */
810: static int
811: argv_single(struct mdoc *mdoc, int line,
812: struct mdoc_argv *v, int *pos, char *buf)
813: {
814: int c, ppos;
815: char *p;
816:
817: ppos = *pos;
818:
819: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
820: if (ARGS_ERROR == c)
821: return(0);
822: if (ARGS_EOLN == c)
823: return(perr(mdoc, line, ppos, EARGVAL));
824:
825: v->sz = 1;
826: if (NULL == (v->value = calloc(1, sizeof(char *))))
827: return(verr(mdoc, EMALLOC));
828: if (NULL == (v->value[0] = strdup(p)))
829: return(verr(mdoc, EMALLOC));
830:
831: return(1);
832: }
833:
834:
835: /*
836: * Determine rules for parsing arguments. Arguments can either accept
837: * no parameters, an optional single parameter, one parameter, or
838: * multiple parameters.
839: */
840: static int
841: argv(struct mdoc *mdoc, int line,
842: struct mdoc_argv *v, int *pos, char *buf)
843: {
844:
845: v->sz = 0;
846: v->value = NULL;
847:
848: switch (mdoc_argvflags[v->arg]) {
849: case (ARGV_SINGLE):
850: return(argv_single(mdoc, line, v, pos, buf));
851: case (ARGV_MULTI):
852: return(argv_multi(mdoc, line, v, pos, buf));
853: case (ARGV_OPT_SINGLE):
854: return(argv_opt_single(mdoc, line, v, pos, buf));
855: default:
856: /* ARGV_NONE */
857: break;
858: }
859:
860: return(1);
861: }