Annotation of src/usr.bin/mandoc/mdoc_argv.c, Revision 1.11
1.11 ! schwarze 1: /* $Id: mdoc_argv.c,v 1.10 2009/07/26 01:59:46 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:
1.1 kristaps 37: #define ARGS_QUOTED (1 << 0)
38: #define ARGS_DELIM (1 << 1)
39: #define ARGS_TABSEP (1 << 2)
40: #define ARGS_ARGVLIKE (1 << 3)
41:
42: #define ARGV_NONE (1 << 0)
43: #define ARGV_SINGLE (1 << 1)
44: #define ARGV_MULTI (1 << 2)
45: #define ARGV_OPT_SINGLE (1 << 3)
46:
47: #define MULTI_STEP 5
48:
49: static int argv_a2arg(int, const char *);
50: static int args(struct mdoc *, int, int *,
51: char *, int, char **);
52: static int argv(struct mdoc *, int,
53: struct mdoc_argv *, int *, char *);
54: static int argv_single(struct mdoc *, int,
55: struct mdoc_argv *, int *, char *);
56: static int argv_opt_single(struct mdoc *, int,
57: struct mdoc_argv *, int *, char *);
58: static int argv_multi(struct mdoc *, int,
59: struct mdoc_argv *, int *, char *);
60:
61: /* Per-argument flags. */
62:
63: static int mdoc_argvflags[MDOC_ARG_MAX] = {
64: ARGV_NONE, /* MDOC_Split */
65: ARGV_NONE, /* MDOC_Nosplit */
66: ARGV_NONE, /* MDOC_Ragged */
67: ARGV_NONE, /* MDOC_Unfilled */
68: ARGV_NONE, /* MDOC_Literal */
69: ARGV_NONE, /* MDOC_File */
70: ARGV_SINGLE, /* MDOC_Offset */
71: ARGV_NONE, /* MDOC_Bullet */
72: ARGV_NONE, /* MDOC_Dash */
73: ARGV_NONE, /* MDOC_Hyphen */
74: ARGV_NONE, /* MDOC_Item */
75: ARGV_NONE, /* MDOC_Enum */
76: ARGV_NONE, /* MDOC_Tag */
77: ARGV_NONE, /* MDOC_Diag */
78: ARGV_NONE, /* MDOC_Hang */
79: ARGV_NONE, /* MDOC_Ohang */
80: ARGV_NONE, /* MDOC_Inset */
81: ARGV_MULTI, /* MDOC_Column */
82: ARGV_SINGLE, /* MDOC_Width */
83: ARGV_NONE, /* MDOC_Compact */
84: ARGV_OPT_SINGLE, /* MDOC_Std */
85: ARGV_NONE, /* MDOC_Filled */
86: ARGV_NONE, /* MDOC_Words */
87: ARGV_NONE, /* MDOC_Emphasis */
88: ARGV_NONE, /* MDOC_Symbolic */
89: ARGV_NONE /* MDOC_Symbolic */
90: };
91:
92: static int mdoc_argflags[MDOC_MAX] = {
1.3 schwarze 93: 0, /* Ap */
1.1 kristaps 94: 0, /* Dd */
95: 0, /* Dt */
96: 0, /* Os */
97: ARGS_QUOTED, /* Sh */
98: ARGS_QUOTED, /* Ss */
99: ARGS_DELIM, /* Pp */
100: ARGS_DELIM, /* D1 */
101: ARGS_DELIM | ARGS_QUOTED, /* Dl */
102: 0, /* Bd */
103: 0, /* Ed */
1.4 schwarze 104: ARGS_QUOTED, /* Bl */
1.1 kristaps 105: 0, /* El */
106: 0, /* It */
107: ARGS_DELIM, /* Ad */
108: ARGS_DELIM, /* An */
109: ARGS_DELIM | ARGS_QUOTED, /* Ar */
110: ARGS_QUOTED, /* Cd */
111: ARGS_DELIM, /* Cm */
112: ARGS_DELIM, /* Dv */
113: ARGS_DELIM, /* Er */
114: ARGS_DELIM, /* Ev */
115: 0, /* Ex */
116: ARGS_DELIM | ARGS_QUOTED, /* Fa */
117: 0, /* Fd */
118: ARGS_DELIM, /* Fl */
119: ARGS_DELIM | ARGS_QUOTED, /* Fn */
120: ARGS_DELIM | ARGS_QUOTED, /* Ft */
121: ARGS_DELIM, /* Ic */
122: 0, /* In */
123: ARGS_DELIM | ARGS_QUOTED, /* Li */
124: ARGS_QUOTED, /* Nd */
125: ARGS_DELIM, /* Nm */
126: ARGS_DELIM, /* Op */
127: 0, /* Ot */
128: ARGS_DELIM, /* Pa */
129: 0, /* Rv */
130: ARGS_DELIM | ARGS_ARGVLIKE, /* St */
131: ARGS_DELIM, /* Va */
132: ARGS_DELIM, /* Vt */
133: ARGS_DELIM, /* Xr */
134: ARGS_QUOTED, /* %A */
135: ARGS_QUOTED, /* %B */
136: ARGS_QUOTED, /* %D */
137: ARGS_QUOTED, /* %I */
138: ARGS_QUOTED, /* %J */
139: ARGS_QUOTED, /* %N */
140: ARGS_QUOTED, /* %O */
141: ARGS_QUOTED, /* %P */
142: ARGS_QUOTED, /* %R */
143: ARGS_QUOTED, /* %T */
144: ARGS_QUOTED, /* %V */
145: ARGS_DELIM, /* Ac */
146: 0, /* Ao */
147: ARGS_DELIM, /* Aq */
148: ARGS_DELIM, /* At */
149: ARGS_DELIM, /* Bc */
150: 0, /* Bf */
151: 0, /* Bo */
152: ARGS_DELIM, /* Bq */
153: ARGS_DELIM, /* Bsx */
154: ARGS_DELIM, /* Bx */
155: 0, /* Db */
156: ARGS_DELIM, /* Dc */
157: 0, /* Do */
158: ARGS_DELIM, /* Dq */
159: ARGS_DELIM, /* Ec */
160: 0, /* Ef */
161: ARGS_DELIM, /* Em */
162: 0, /* Eo */
163: ARGS_DELIM, /* Fx */
164: ARGS_DELIM, /* Ms */
165: ARGS_DELIM, /* No */
166: ARGS_DELIM, /* Ns */
167: ARGS_DELIM, /* Nx */
168: ARGS_DELIM, /* Ox */
169: ARGS_DELIM, /* Pc */
170: ARGS_DELIM, /* Pf */
171: 0, /* Po */
172: ARGS_DELIM, /* Pq */
173: ARGS_DELIM, /* Qc */
174: ARGS_DELIM, /* Ql */
175: 0, /* Qo */
176: ARGS_DELIM, /* Qq */
177: 0, /* Re */
178: 0, /* Rs */
179: ARGS_DELIM, /* Sc */
180: 0, /* So */
181: ARGS_DELIM, /* Sq */
182: 0, /* Sm */
183: ARGS_DELIM, /* Sx */
184: ARGS_DELIM | ARGS_QUOTED, /* Sy */
185: ARGS_DELIM, /* Tn */
186: ARGS_DELIM, /* Ux */
187: ARGS_DELIM, /* Xc */
188: 0, /* Xo */
189: ARGS_QUOTED, /* Fo */
190: 0, /* Fc */
191: 0, /* Oo */
192: ARGS_DELIM, /* Oc */
193: 0, /* Bk */
194: 0, /* Ek */
195: 0, /* Bt */
196: 0, /* Hf */
197: 0, /* Fr */
198: 0, /* Ud */
199: 0, /* Lb */
200: ARGS_DELIM, /* Lp */
201: ARGS_DELIM | ARGS_QUOTED, /* Lk */
202: ARGS_DELIM | ARGS_QUOTED, /* Mt */
203: ARGS_DELIM, /* Brq */
204: 0, /* Bro */
205: ARGS_DELIM, /* Brc */
206: ARGS_QUOTED, /* %C */
207: 0, /* Es */
208: 0, /* En */
209: 0, /* Dx */
210: ARGS_QUOTED, /* %Q */
1.10 schwarze 211: 0, /* br */
212: 0, /* sp */
1.1 kristaps 213: };
214:
215:
216: /*
217: * Parse an argument from line text. This comes in the form of -key
218: * [value0...], which may either have a single mandatory value, at least
219: * one mandatory value, an optional single value, or no value.
220: */
221: int
1.6 schwarze 222: mdoc_argv(struct mdoc *m, int line, int tok,
1.1 kristaps 223: struct mdoc_arg **v, int *pos, char *buf)
224: {
225: int i;
226: char *p, sv;
227: struct mdoc_argv tmp;
228: struct mdoc_arg *arg;
229:
230: if (0 == buf[*pos])
231: return(ARGV_EOLN);
232:
233: assert(' ' != buf[*pos]);
234:
235: if ('-' != buf[*pos] || ARGS_ARGVLIKE & mdoc_argflags[tok])
236: return(ARGV_WORD);
237:
238: /* Parse through to the first unescaped space. */
239:
240: i = *pos;
241: p = &buf[++(*pos)];
242:
243: assert(*pos > 0);
244:
245: /* LINTED */
246: while (buf[*pos]) {
247: if (' ' == buf[*pos])
248: if ('\\' != buf[*pos - 1])
249: break;
250: (*pos)++;
251: }
252:
253: /* XXX - save zeroed byte, if not an argument. */
254:
255: sv = 0;
256: if (buf[*pos]) {
257: sv = buf[*pos];
258: buf[(*pos)++] = 0;
259: }
260:
261: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
262: tmp.line = line;
263: tmp.pos = *pos;
264:
265: /* See if our token accepts the argument. */
266:
267: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
268: /* XXX - restore saved zeroed byte. */
269: if (sv)
270: buf[*pos - 1] = sv;
271: return(ARGV_WORD);
272: }
273:
274: while (buf[*pos] && ' ' == buf[*pos])
275: (*pos)++;
276:
1.6 schwarze 277: if ( ! argv(m, line, &tmp, pos, buf))
1.1 kristaps 278: return(ARGV_ERROR);
279:
280: if (NULL == (arg = *v)) {
281: *v = calloc(1, sizeof(struct mdoc_arg));
282: if (NULL == *v) {
1.6 schwarze 283: (void)mdoc_nerr(m, m->last, EMALLOC);
1.1 kristaps 284: return(ARGV_ERROR);
285: }
286: arg = *v;
287: }
288:
289: arg->argc++;
290: arg->argv = realloc(arg->argv, arg->argc *
291: sizeof(struct mdoc_argv));
292:
293: if (NULL == arg->argv) {
1.6 schwarze 294: (void)mdoc_nerr(m, m->last, EMALLOC);
1.1 kristaps 295: return(ARGV_ERROR);
296: }
297:
298: (void)memcpy(&arg->argv[(int)arg->argc - 1],
299: &tmp, sizeof(struct mdoc_argv));
300:
301: return(ARGV_ARG);
302: }
303:
304:
305: void
306: mdoc_argv_free(struct mdoc_arg *p)
307: {
308: int i, j;
309:
310: if (NULL == p)
311: return;
312:
313: if (p->refcnt) {
314: --(p->refcnt);
315: if (p->refcnt)
316: return;
317: }
318: assert(p->argc);
319:
320: /* LINTED */
321: for (i = 0; i < (int)p->argc; i++) {
322: if (0 == p->argv[i].sz)
323: continue;
324: /* LINTED */
325: for (j = 0; j < (int)p->argv[i].sz; j++)
326: free(p->argv[i].value[j]);
327:
328: free(p->argv[i].value);
329: }
330:
331: free(p->argv);
332: free(p);
333: }
334:
335:
336: int
1.8 schwarze 337: mdoc_args(struct mdoc *m, int line,
1.1 kristaps 338: int *pos, char *buf, int tok, char **v)
339: {
340: int fl, c, i;
341: struct mdoc_node *n;
342:
343: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
344:
345: /*
346: * Override per-macro argument flags with context-specific ones.
347: * As of now, this is only valid for `It' depending on its list
348: * context.
349: */
350:
351: switch (tok) {
352: case (MDOC_It):
1.8 schwarze 353: for (n = m->last; n; n = n->parent)
1.1 kristaps 354: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
355: break;
356:
357: assert(n);
358: c = (int)(n->args ? n->args->argc : 0);
359: assert(c > 0);
360:
361: /*
362: * Using `Bl -column' adds ARGS_TABSEP to the arguments
363: * and invalidates ARGS_DELIM. Using `Bl -diag' allows
364: * for quoted arguments.
365: */
366:
367: /* LINTED */
368: for (i = 0; i < c; i++) {
369: switch (n->args->argv[i].arg) {
370: case (MDOC_Column):
371: fl |= ARGS_TABSEP;
372: fl &= ~ARGS_DELIM;
373: i = c;
374: break;
375: case (MDOC_Diag):
376: fl |= ARGS_QUOTED;
377: i = c;
378: break;
379: default:
380: break;
381: }
382: }
383: break;
384: default:
385: break;
386: }
387:
1.8 schwarze 388: return(args(m, line, pos, buf, fl, v));
1.1 kristaps 389: }
390:
391:
392: static int
1.11 ! schwarze 393: args(struct mdoc *m, int line, int *pos,
! 394: char *buf, int fl, char **v)
1.1 kristaps 395: {
396: int i;
397: char *p, *pp;
398:
399: assert(*pos > 0);
400:
401: if (0 == buf[*pos])
402: return(ARGS_EOLN);
403:
404: if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
1.8 schwarze 405: if ( ! mdoc_pwarn(m, line, *pos, EQUOTPARM))
1.1 kristaps 406: return(ARGS_ERROR);
407:
408: /*
409: * If the first character is a delimiter and we're to look for
410: * delimited strings, then pass down the buffer seeing if it
411: * follows the pattern of [[::delim::][ ]+]+.
412: */
413:
414: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
415: for (i = *pos; buf[i]; ) {
416: if ( ! mdoc_iscdelim(buf[i]))
417: break;
418: i++;
419: /* There must be at least one space... */
420: if (0 == buf[i] || ' ' != buf[i])
421: break;
422: i++;
423: while (buf[i] && ' ' == buf[i])
424: i++;
425: }
426: if (0 == buf[i]) {
427: *v = &buf[*pos];
428: return(ARGS_PUNCT);
429: }
430: }
431:
432: /* First parse non-quoted strings. */
433:
434: if ('\"' != buf[*pos] || ! (ARGS_QUOTED & fl)) {
435: *v = &buf[*pos];
436:
437: /*
438: * Thar be dragons here! If we're tab-separated, search
439: * ahead for either a tab or the `Ta' macro.
440: * If a `Ta' is detected, it must be space-buffered before and
441: * after. If either of these hold true, then prune out the
442: * extra spaces and call it an argument.
443: */
444:
445: if (ARGS_TABSEP & fl) {
446: /* Scan ahead to unescaped tab. */
447:
448: p = strchr(*v, '\t');
449:
450: /* Scan ahead to unescaped `Ta'. */
451:
452: for (pp = *v; ; pp++) {
453: if (NULL == (pp = strstr(pp, "Ta")))
454: break;
455: if (pp > *v && ' ' != *(pp - 1))
456: continue;
457: if (' ' == *(pp + 2) || 0 == *(pp + 2))
458: break;
459: }
460:
461: /* Choose delimiter tab/Ta. */
462:
463: if (p && pp)
464: p = (p < pp ? p : pp);
465: else if ( ! p && pp)
466: p = pp;
467:
468: /* Strip delimiter's preceding whitespace. */
469:
470: if (p && p > *v) {
471: pp = p - 1;
472: while (pp > *v && ' ' == *pp)
473: pp--;
474: if (pp == *v && ' ' == *pp)
475: *pp = 0;
476: else if (' ' == *pp)
477: *(pp + 1) = 0;
478: }
479:
480: /* ...in- and proceding whitespace. */
481:
482: if (p && ('\t' != *p)) {
483: *p++ = 0;
484: *p++ = 0;
485: } else if (p)
486: *p++ = 0;
487:
488: if (p) {
489: while (' ' == *p)
490: p++;
491: if (0 != *p)
492: *(p - 1) = 0;
493: *pos += (int)(p - *v);
494: }
495:
496: if (p && 0 == *p)
1.8 schwarze 497: if ( ! mdoc_pwarn(m, line, *pos, ECOLEMPTY))
1.1 kristaps 498: return(0);
499: if (p && 0 == *p && p > *v && ' ' == *(p - 1))
1.8 schwarze 500: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
1.1 kristaps 501: return(0);
502:
503: if (p)
504: return(ARGS_PHRASE);
505:
506: /* Configure the eoln case, too. */
507:
508: p = strchr(*v, 0);
509: assert(p);
510:
511: if (p > *v && ' ' == *(p - 1))
1.8 schwarze 512: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
1.1 kristaps 513: return(0);
514: *pos += (int)(p - *v);
515:
516: return(ARGS_PHRASE);
517: }
518:
519: /* Do non-tabsep look-ahead here. */
520:
521: if ( ! (ARGS_TABSEP & fl))
522: while (buf[*pos]) {
523: if (' ' == buf[*pos])
524: if ('\\' != buf[*pos - 1])
525: break;
526: (*pos)++;
527: }
528:
529: if (0 == buf[*pos])
530: return(ARGS_WORD);
531:
532: buf[(*pos)++] = 0;
533:
534: if (0 == buf[*pos])
535: return(ARGS_WORD);
536:
537: if ( ! (ARGS_TABSEP & fl))
538: while (buf[*pos] && ' ' == buf[*pos])
539: (*pos)++;
540:
541: if (buf[*pos])
542: return(ARGS_WORD);
543:
1.8 schwarze 544: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
1.1 kristaps 545: return(ARGS_ERROR);
546:
547: return(ARGS_WORD);
548: }
549:
550: /*
551: * If we're a quoted string (and quoted strings are allowed),
552: * then parse ahead to the next quote. If none's found, it's an
553: * error. After, parse to the next word.
554: */
555:
556: *v = &buf[++(*pos)];
557:
558: while (buf[*pos] && '\"' != buf[*pos])
559: (*pos)++;
560:
561: if (0 == buf[*pos]) {
1.8 schwarze 562: (void)mdoc_perr(m, line, *pos, EQUOTTERM);
1.1 kristaps 563: return(ARGS_ERROR);
564: }
565:
566: buf[(*pos)++] = 0;
567: if (0 == buf[*pos])
568: return(ARGS_QWORD);
569:
570: while (buf[*pos] && ' ' == buf[*pos])
571: (*pos)++;
572:
573: if (buf[*pos])
574: return(ARGS_QWORD);
575:
1.8 schwarze 576: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
1.1 kristaps 577: return(ARGS_ERROR);
578:
579: return(ARGS_QWORD);
580: }
581:
582:
583: static int
584: argv_a2arg(int tok, const char *argv)
585: {
586:
587: /*
588: * Parse an argument identifier from its text. XXX - this
589: * should really be table-driven to clarify the code.
590: *
591: * If you add an argument to the list, make sure that you
592: * register it here with its one or more macros!
593: */
594:
595: switch (tok) {
596: case (MDOC_An):
597: if (0 == strcmp(argv, "split"))
598: return(MDOC_Split);
599: else if (0 == strcmp(argv, "nosplit"))
600: return(MDOC_Nosplit);
601: break;
602:
603: case (MDOC_Bd):
604: if (0 == strcmp(argv, "ragged"))
605: return(MDOC_Ragged);
606: else if (0 == strcmp(argv, "unfilled"))
607: return(MDOC_Unfilled);
608: else if (0 == strcmp(argv, "filled"))
609: return(MDOC_Filled);
610: else if (0 == strcmp(argv, "literal"))
611: return(MDOC_Literal);
612: else if (0 == strcmp(argv, "file"))
613: return(MDOC_File);
614: else if (0 == strcmp(argv, "offset"))
615: return(MDOC_Offset);
616: else if (0 == strcmp(argv, "compact"))
617: return(MDOC_Compact);
618: break;
619:
620: case (MDOC_Bf):
621: if (0 == strcmp(argv, "emphasis"))
622: return(MDOC_Emphasis);
623: else if (0 == strcmp(argv, "literal"))
624: return(MDOC_Literal);
625: else if (0 == strcmp(argv, "symbolic"))
626: return(MDOC_Symbolic);
627: break;
628:
629: case (MDOC_Bk):
630: if (0 == strcmp(argv, "words"))
631: return(MDOC_Words);
632: break;
633:
634: case (MDOC_Bl):
635: if (0 == strcmp(argv, "bullet"))
636: return(MDOC_Bullet);
637: else if (0 == strcmp(argv, "dash"))
638: return(MDOC_Dash);
639: else if (0 == strcmp(argv, "hyphen"))
640: return(MDOC_Hyphen);
641: else if (0 == strcmp(argv, "item"))
642: return(MDOC_Item);
643: else if (0 == strcmp(argv, "enum"))
644: return(MDOC_Enum);
645: else if (0 == strcmp(argv, "tag"))
646: return(MDOC_Tag);
647: else if (0 == strcmp(argv, "diag"))
648: return(MDOC_Diag);
649: else if (0 == strcmp(argv, "hang"))
650: return(MDOC_Hang);
651: else if (0 == strcmp(argv, "ohang"))
652: return(MDOC_Ohang);
653: else if (0 == strcmp(argv, "inset"))
654: return(MDOC_Inset);
655: else if (0 == strcmp(argv, "column"))
656: return(MDOC_Column);
657: else if (0 == strcmp(argv, "width"))
658: return(MDOC_Width);
659: else if (0 == strcmp(argv, "offset"))
660: return(MDOC_Offset);
661: else if (0 == strcmp(argv, "compact"))
662: return(MDOC_Compact);
663: else if (0 == strcmp(argv, "nested"))
664: return(MDOC_Nested);
665: break;
666:
667: case (MDOC_Rv):
668: /* FALLTHROUGH */
669: case (MDOC_Ex):
670: if (0 == strcmp(argv, "std"))
671: return(MDOC_Std);
672: break;
673: default:
674: break;
675: }
676:
677: return(MDOC_ARG_MAX);
678: }
679:
680:
681: static int
1.6 schwarze 682: argv_multi(struct mdoc *m, int line,
1.1 kristaps 683: struct mdoc_argv *v, int *pos, char *buf)
684: {
1.4 schwarze 685: int c;
1.1 kristaps 686: char *p;
687:
688: for (v->sz = 0; ; v->sz++) {
689: if ('-' == buf[*pos])
690: break;
1.6 schwarze 691: c = args(m, line, pos, buf, ARGS_QUOTED, &p);
1.1 kristaps 692: if (ARGS_ERROR == c)
693: return(0);
694: else if (ARGS_EOLN == c)
695: break;
696:
697: if (0 == v->sz % MULTI_STEP) {
698: v->value = realloc(v->value,
699: (v->sz + MULTI_STEP) * sizeof(char *));
700: if (NULL == v->value) {
1.6 schwarze 701: (void)mdoc_nerr(m, m->last, EMALLOC);
1.1 kristaps 702: return(ARGV_ERROR);
703: }
704: }
705: if (NULL == (v->value[(int)v->sz] = strdup(p)))
1.6 schwarze 706: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 707: }
708:
1.4 schwarze 709: return(1);
1.1 kristaps 710: }
711:
712:
713: static int
1.6 schwarze 714: argv_opt_single(struct mdoc *m, int line,
1.1 kristaps 715: struct mdoc_argv *v, int *pos, char *buf)
716: {
717: int c;
718: char *p;
719:
720: if ('-' == buf[*pos])
721: return(1);
722:
1.6 schwarze 723: c = args(m, line, pos, buf, ARGS_QUOTED, &p);
1.1 kristaps 724: if (ARGS_ERROR == c)
725: return(0);
726: if (ARGS_EOLN == c)
727: return(1);
728:
729: v->sz = 1;
730: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.6 schwarze 731: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 732: if (NULL == (v->value[0] = strdup(p)))
1.6 schwarze 733: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 734:
735: return(1);
736: }
737:
738:
739: /*
740: * Parse a single, mandatory value from the stream.
741: */
742: static int
1.6 schwarze 743: argv_single(struct mdoc *m, int line,
1.1 kristaps 744: struct mdoc_argv *v, int *pos, char *buf)
745: {
746: int c, ppos;
747: char *p;
748:
749: ppos = *pos;
750:
1.6 schwarze 751: c = args(m, line, pos, buf, ARGS_QUOTED, &p);
1.1 kristaps 752: if (ARGS_ERROR == c)
753: return(0);
754: if (ARGS_EOLN == c)
1.7 schwarze 755: return(mdoc_perr(m, line, ppos, EARGVAL));
1.1 kristaps 756:
757: v->sz = 1;
758: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.6 schwarze 759: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 760: if (NULL == (v->value[0] = strdup(p)))
1.6 schwarze 761: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 762:
763: return(1);
764: }
765:
766:
767: /*
768: * Determine rules for parsing arguments. Arguments can either accept
769: * no parameters, an optional single parameter, one parameter, or
770: * multiple parameters.
771: */
772: static int
773: argv(struct mdoc *mdoc, int line,
774: struct mdoc_argv *v, int *pos, char *buf)
775: {
776:
777: v->sz = 0;
778: v->value = NULL;
779:
780: switch (mdoc_argvflags[v->arg]) {
781: case (ARGV_SINGLE):
782: return(argv_single(mdoc, line, v, pos, buf));
783: case (ARGV_MULTI):
784: return(argv_multi(mdoc, line, v, pos, buf));
785: case (ARGV_OPT_SINGLE):
786: return(argv_opt_single(mdoc, line, v, pos, buf));
787: default:
788: /* ARGV_NONE */
789: break;
790: }
791:
792: return(1);
793: }