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1.10 ! kristaps 1: /* $Id: mdoc_argv.c,v 1.9 2009/07/06 09:21:24 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: enum merr {
1.10 ! kristaps 51: ETAILWS,
! 52: ECOLEMPTY,
! 53: EARGVPARM,
! 54: EQUOTPARM,
1.1 kristaps 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 *);
1.10 ! kristaps 71: static int perr(struct mdoc *, int, int, enum merr, int);
1.1 kristaps 72:
1.10 ! kristaps 73: #define pwarn(m, l, p, t) perr((m), (l), (p), (t), 0)
! 74: #define verr(m, t) perr((m), (m)->last->line, (m)->last->pos, (t), 1)
1.2 kristaps 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 */
1.7 kristaps 119: ARGS_QUOTED, /* Bl */
1.1 kristaps 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;
1.10 ! kristaps 284: if ( ! pwarn(mdoc, line, i, EARGVPARM))
1.1 kristaps 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
1.10 ! kristaps 353: perr(struct mdoc *mdoc, int line, int pos, enum merr code, int iserr)
1.1 kristaps 354: {
355: char *p;
356:
357: p = NULL;
1.10 ! kristaps 358:
1.1 kristaps 359: switch (code) {
1.2 kristaps 360: case (EMALLOC):
361: p = "memory exhausted";
362: break;
1.1 kristaps 363: case (EQUOTTERM):
364: p = "unterminated quoted parameter";
365: break;
366: case (EARGVAL):
367: p = "argument requires a value";
368: break;
1.10 ! kristaps 369: case (EQUOTPARM):
1.1 kristaps 370: p = "unexpected quoted parameter";
371: break;
1.10 ! kristaps 372: case (EARGVPARM):
1.1 kristaps 373: p = "argument-like parameter";
374: break;
1.10 ! kristaps 375: case (ECOLEMPTY):
1.1 kristaps 376: p = "last list column is empty";
377: break;
1.10 ! kristaps 378: case (ETAILWS):
1.1 kristaps 379: p = "trailing whitespace";
380: break;
381: }
1.9 kristaps 382:
1.1 kristaps 383: assert(p);
1.10 ! kristaps 384: if (iserr)
! 385: return(mdoc_perr(mdoc, line, pos, p));
! 386:
1.9 kristaps 387: return(mdoc_pwarn(mdoc, line, pos, p));
1.1 kristaps 388: }
389:
390:
391: int
392: mdoc_args(struct mdoc *mdoc, int line,
393: int *pos, char *buf, int tok, char **v)
394: {
395: int fl, c, i;
396: struct mdoc_node *n;
397:
398: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
399:
400: /*
401: * Override per-macro argument flags with context-specific ones.
402: * As of now, this is only valid for `It' depending on its list
403: * context.
404: */
405:
406: switch (tok) {
407: case (MDOC_It):
408: for (n = mdoc->last; n; n = n->parent)
409: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
410: break;
411:
412: assert(n);
413: c = (int)(n->args ? n->args->argc : 0);
414: assert(c > 0);
415:
416: /*
417: * Using `Bl -column' adds ARGS_TABSEP to the arguments
418: * and invalidates ARGS_DELIM. Using `Bl -diag' allows
419: * for quoted arguments.
420: */
421:
422: /* LINTED */
423: for (i = 0; i < c; i++) {
424: switch (n->args->argv[i].arg) {
425: case (MDOC_Column):
426: fl |= ARGS_TABSEP;
427: fl &= ~ARGS_DELIM;
428: i = c;
429: break;
430: case (MDOC_Diag):
431: fl |= ARGS_QUOTED;
432: i = c;
433: break;
434: default:
435: break;
436: }
437: }
438: break;
439: default:
440: break;
441: }
442:
443: return(args(mdoc, line, pos, buf, fl, v));
444: }
445:
446:
447: static int
448: args(struct mdoc *mdoc, int line,
449: int *pos, char *buf, int fl, char **v)
450: {
451: int i;
452: char *p, *pp;
453:
454: assert(*pos > 0);
455:
456: if (0 == buf[*pos])
457: return(ARGS_EOLN);
458:
459: if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
1.10 ! kristaps 460: if ( ! pwarn(mdoc, line, *pos, EQUOTPARM))
1.1 kristaps 461: return(ARGS_ERROR);
462:
463: if ( ! (fl & ARGS_ARGVLIKE) && '-' == buf[*pos])
1.10 ! kristaps 464: if ( ! pwarn(mdoc, line, *pos, EARGVPARM))
1.1 kristaps 465: return(ARGS_ERROR);
466:
467: /*
468: * If the first character is a delimiter and we're to look for
469: * delimited strings, then pass down the buffer seeing if it
470: * follows the pattern of [[::delim::][ ]+]+.
471: */
472:
473: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
474: for (i = *pos; buf[i]; ) {
475: if ( ! mdoc_iscdelim(buf[i]))
476: break;
477: i++;
478: /* There must be at least one space... */
479: if (0 == buf[i] || ' ' != buf[i])
480: break;
481: i++;
482: while (buf[i] && ' ' == buf[i])
483: i++;
484: }
485: if (0 == buf[i]) {
486: *v = &buf[*pos];
487: return(ARGS_PUNCT);
488: }
489: }
490:
491: /* First parse non-quoted strings. */
492:
493: if ('\"' != buf[*pos] || ! (ARGS_QUOTED & fl)) {
494: *v = &buf[*pos];
495:
496: /*
497: * Thar be dragons here! If we're tab-separated, search
498: * ahead for either a tab or the `Ta' macro.
499: * If a `Ta' is detected, it must be space-buffered before and
500: * after. If either of these hold true, then prune out the
501: * extra spaces and call it an argument.
502: */
503:
504: if (ARGS_TABSEP & fl) {
505: /* Scan ahead to unescaped tab. */
506:
507: p = strchr(*v, '\t');
508:
509: /* Scan ahead to unescaped `Ta'. */
510:
511: for (pp = *v; ; pp++) {
512: if (NULL == (pp = strstr(pp, "Ta")))
513: break;
514: if (pp > *v && ' ' != *(pp - 1))
515: continue;
516: if (' ' == *(pp + 2) || 0 == *(pp + 2))
517: break;
518: }
519:
520: /* Choose delimiter tab/Ta. */
521:
522: if (p && pp)
523: p = (p < pp ? p : pp);
524: else if ( ! p && pp)
525: p = pp;
526:
527: /* Strip delimiter's preceding whitespace. */
528:
529: if (p && p > *v) {
530: pp = p - 1;
531: while (pp > *v && ' ' == *pp)
532: pp--;
533: if (pp == *v && ' ' == *pp)
534: *pp = 0;
535: else if (' ' == *pp)
536: *(pp + 1) = 0;
537: }
538:
539: /* ...in- and proceding whitespace. */
540:
541: if (p && ('\t' != *p)) {
542: *p++ = 0;
543: *p++ = 0;
544: } else if (p)
545: *p++ = 0;
546:
547: if (p) {
548: while (' ' == *p)
549: p++;
550: if (0 != *p)
551: *(p - 1) = 0;
552: *pos += (int)(p - *v);
553: }
554:
555: if (p && 0 == *p)
1.10 ! kristaps 556: if ( ! pwarn(mdoc, line, *pos, ECOLEMPTY))
1.1 kristaps 557: return(0);
558: if (p && 0 == *p && p > *v && ' ' == *(p - 1))
1.10 ! kristaps 559: if ( ! pwarn(mdoc, line, *pos, ETAILWS))
1.1 kristaps 560: return(0);
561:
562: if (p)
563: return(ARGS_PHRASE);
564:
565: /* Configure the eoln case, too. */
566:
567: p = strchr(*v, 0);
568: assert(p);
569:
570: if (p > *v && ' ' == *(p - 1))
1.10 ! kristaps 571: if ( ! pwarn(mdoc, line, *pos, ETAILWS))
1.1 kristaps 572: return(0);
573: *pos += (int)(p - *v);
574:
575: return(ARGS_PHRASE);
576: }
577:
578: /* Do non-tabsep look-ahead here. */
579:
580: if ( ! (ARGS_TABSEP & fl))
581: while (buf[*pos]) {
582: if (' ' == buf[*pos])
583: if ('\\' != buf[*pos - 1])
584: break;
585: (*pos)++;
586: }
587:
588: if (0 == buf[*pos])
589: return(ARGS_WORD);
590:
591: buf[(*pos)++] = 0;
592:
593: if (0 == buf[*pos])
594: return(ARGS_WORD);
595:
596: if ( ! (ARGS_TABSEP & fl))
597: while (buf[*pos] && ' ' == buf[*pos])
598: (*pos)++;
599:
600: if (buf[*pos])
601: return(ARGS_WORD);
602:
1.10 ! kristaps 603: if ( ! pwarn(mdoc, line, *pos, ETAILWS))
1.1 kristaps 604: return(ARGS_ERROR);
605:
606: return(ARGS_WORD);
607: }
608:
609: /*
610: * If we're a quoted string (and quoted strings are allowed),
611: * then parse ahead to the next quote. If none's found, it's an
612: * error. After, parse to the next word.
613: */
614:
615: *v = &buf[++(*pos)];
616:
617: while (buf[*pos] && '\"' != buf[*pos])
618: (*pos)++;
619:
620: if (0 == buf[*pos]) {
1.10 ! kristaps 621: (void)perr(mdoc, line, *pos, EQUOTTERM, 1);
1.1 kristaps 622: return(ARGS_ERROR);
623: }
624:
625: buf[(*pos)++] = 0;
626: if (0 == buf[*pos])
627: return(ARGS_QWORD);
628:
629: while (buf[*pos] && ' ' == buf[*pos])
630: (*pos)++;
631:
632: if (buf[*pos])
633: return(ARGS_QWORD);
634:
1.10 ! kristaps 635: if ( ! pwarn(mdoc, line, *pos, ETAILWS))
1.1 kristaps 636: return(ARGS_ERROR);
637:
638: return(ARGS_QWORD);
639: }
640:
641:
642: static int
643: argv_a2arg(int tok, const char *argv)
644: {
645:
646: /*
647: * Parse an argument identifier from its text. XXX - this
648: * should really be table-driven to clarify the code.
649: *
650: * If you add an argument to the list, make sure that you
651: * register it here with its one or more macros!
652: */
653:
654: switch (tok) {
655: case (MDOC_An):
1.2 kristaps 656: if (0 == strcmp(argv, "split"))
1.1 kristaps 657: return(MDOC_Split);
1.2 kristaps 658: else if (0 == strcmp(argv, "nosplit"))
1.1 kristaps 659: return(MDOC_Nosplit);
660: break;
661:
662: case (MDOC_Bd):
1.2 kristaps 663: if (0 == strcmp(argv, "ragged"))
1.1 kristaps 664: return(MDOC_Ragged);
1.2 kristaps 665: else if (0 == strcmp(argv, "unfilled"))
1.1 kristaps 666: return(MDOC_Unfilled);
1.2 kristaps 667: else if (0 == strcmp(argv, "filled"))
1.1 kristaps 668: return(MDOC_Filled);
1.2 kristaps 669: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 670: return(MDOC_Literal);
1.2 kristaps 671: else if (0 == strcmp(argv, "file"))
1.1 kristaps 672: return(MDOC_File);
1.2 kristaps 673: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 674: return(MDOC_Offset);
1.2 kristaps 675: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 676: return(MDOC_Compact);
677: break;
678:
679: case (MDOC_Bf):
1.2 kristaps 680: if (0 == strcmp(argv, "emphasis"))
1.1 kristaps 681: return(MDOC_Emphasis);
1.2 kristaps 682: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 683: return(MDOC_Literal);
1.2 kristaps 684: else if (0 == strcmp(argv, "symbolic"))
1.1 kristaps 685: return(MDOC_Symbolic);
686: break;
687:
688: case (MDOC_Bk):
1.2 kristaps 689: if (0 == strcmp(argv, "words"))
1.1 kristaps 690: return(MDOC_Words);
691: break;
692:
693: case (MDOC_Bl):
1.2 kristaps 694: if (0 == strcmp(argv, "bullet"))
1.1 kristaps 695: return(MDOC_Bullet);
1.2 kristaps 696: else if (0 == strcmp(argv, "dash"))
1.1 kristaps 697: return(MDOC_Dash);
1.2 kristaps 698: else if (0 == strcmp(argv, "hyphen"))
1.1 kristaps 699: return(MDOC_Hyphen);
1.2 kristaps 700: else if (0 == strcmp(argv, "item"))
1.1 kristaps 701: return(MDOC_Item);
1.2 kristaps 702: else if (0 == strcmp(argv, "enum"))
1.1 kristaps 703: return(MDOC_Enum);
1.2 kristaps 704: else if (0 == strcmp(argv, "tag"))
1.1 kristaps 705: return(MDOC_Tag);
1.2 kristaps 706: else if (0 == strcmp(argv, "diag"))
1.1 kristaps 707: return(MDOC_Diag);
1.2 kristaps 708: else if (0 == strcmp(argv, "hang"))
1.1 kristaps 709: return(MDOC_Hang);
1.2 kristaps 710: else if (0 == strcmp(argv, "ohang"))
1.1 kristaps 711: return(MDOC_Ohang);
1.2 kristaps 712: else if (0 == strcmp(argv, "inset"))
1.1 kristaps 713: return(MDOC_Inset);
1.2 kristaps 714: else if (0 == strcmp(argv, "column"))
1.1 kristaps 715: return(MDOC_Column);
1.2 kristaps 716: else if (0 == strcmp(argv, "width"))
1.1 kristaps 717: return(MDOC_Width);
1.2 kristaps 718: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 719: return(MDOC_Offset);
1.2 kristaps 720: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 721: return(MDOC_Compact);
1.2 kristaps 722: else if (0 == strcmp(argv, "nested"))
1.1 kristaps 723: return(MDOC_Nested);
724: break;
725:
726: case (MDOC_Rv):
727: /* FALLTHROUGH */
728: case (MDOC_Ex):
1.2 kristaps 729: if (0 == strcmp(argv, "std"))
1.1 kristaps 730: return(MDOC_Std);
731: break;
732: default:
733: break;
734: }
735:
736: return(MDOC_ARG_MAX);
737: }
738:
739:
740: static int
741: argv_multi(struct mdoc *mdoc, int line,
742: struct mdoc_argv *v, int *pos, char *buf)
743: {
1.8 kristaps 744: int c;
1.1 kristaps 745: char *p;
746:
747: for (v->sz = 0; ; v->sz++) {
748: if ('-' == buf[*pos])
749: break;
750: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
751: if (ARGS_ERROR == c)
752: return(0);
753: else if (ARGS_EOLN == c)
754: break;
755:
1.2 kristaps 756: if (0 == v->sz % MULTI_STEP) {
757: v->value = realloc(v->value,
1.1 kristaps 758: (v->sz + MULTI_STEP) * sizeof(char *));
1.2 kristaps 759: if (NULL == v->value) {
760: (void)verr(mdoc, EMALLOC);
761: return(ARGV_ERROR);
762: }
763: }
1.1 kristaps 764: if (NULL == (v->value[(int)v->sz] = strdup(p)))
1.2 kristaps 765: return(verr(mdoc, EMALLOC));
1.1 kristaps 766: }
767:
1.7 kristaps 768: return(1);
1.1 kristaps 769: }
770:
771:
772: static int
773: argv_opt_single(struct mdoc *mdoc, int line,
774: struct mdoc_argv *v, int *pos, char *buf)
775: {
776: int c;
777: char *p;
778:
779: if ('-' == buf[*pos])
780: return(1);
781:
782: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
783: if (ARGS_ERROR == c)
784: return(0);
785: if (ARGS_EOLN == c)
786: return(1);
787:
788: v->sz = 1;
789: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.2 kristaps 790: return(verr(mdoc, EMALLOC));
1.1 kristaps 791: if (NULL == (v->value[0] = strdup(p)))
1.2 kristaps 792: return(verr(mdoc, EMALLOC));
793:
1.1 kristaps 794: return(1);
795: }
796:
797:
798: /*
799: * Parse a single, mandatory value from the stream.
800: */
801: static int
802: argv_single(struct mdoc *mdoc, int line,
803: struct mdoc_argv *v, int *pos, char *buf)
804: {
805: int c, ppos;
806: char *p;
807:
808: ppos = *pos;
809:
810: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
811: if (ARGS_ERROR == c)
812: return(0);
813: if (ARGS_EOLN == c)
1.10 ! kristaps 814: return(perr(mdoc, line, ppos, EARGVAL, 1));
1.1 kristaps 815:
816: v->sz = 1;
817: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.2 kristaps 818: return(verr(mdoc, EMALLOC));
1.1 kristaps 819: if (NULL == (v->value[0] = strdup(p)))
1.2 kristaps 820: return(verr(mdoc, EMALLOC));
821:
1.1 kristaps 822: return(1);
823: }
824:
825:
826: /*
827: * Determine rules for parsing arguments. Arguments can either accept
828: * no parameters, an optional single parameter, one parameter, or
829: * multiple parameters.
830: */
831: static int
832: argv(struct mdoc *mdoc, int line,
833: struct mdoc_argv *v, int *pos, char *buf)
834: {
835:
836: v->sz = 0;
837: v->value = NULL;
838:
839: switch (mdoc_argvflags[v->arg]) {
840: case (ARGV_SINGLE):
841: return(argv_single(mdoc, line, v, pos, buf));
842: case (ARGV_MULTI):
843: return(argv_multi(mdoc, line, v, pos, buf));
844: case (ARGV_OPT_SINGLE):
845: return(argv_opt_single(mdoc, line, v, pos, buf));
846: default:
847: /* ARGV_NONE */
848: break;
849: }
850:
851: return(1);
852: }