Annotation of mandoc/mdoc_argv.c, Revision 1.7
1.7 ! kristaps 1: /* $Id: mdoc_argv.c,v 1.6 2009/06/17 11:02:06 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 mwarn {
51: WQUOTPARM,
52: WARGVPARM,
53: WCOLEMPTY,
54: WTAILWS
55: };
56:
57: enum merr {
58: EQUOTTERM,
1.2 kristaps 59: EMALLOC,
1.1 kristaps 60: EARGVAL
61: };
62:
63: static int argv_a2arg(int, const char *);
64: static int args(struct mdoc *, int, int *,
65: char *, int, char **);
66: static int argv(struct mdoc *, int,
67: struct mdoc_argv *, int *, char *);
68: static int argv_single(struct mdoc *, int,
69: struct mdoc_argv *, int *, char *);
70: static int argv_opt_single(struct mdoc *, int,
71: struct mdoc_argv *, int *, char *);
72: static int argv_multi(struct mdoc *, int,
73: struct mdoc_argv *, int *, char *);
74: static int pwarn(struct mdoc *, int, int, enum mwarn);
75: static int perr(struct mdoc *, int, int, enum merr);
76:
1.2 kristaps 77: #define verr(m, t) perr((m), (m)->last->line, (m)->last->pos, (t))
78:
1.1 kristaps 79: /* Per-argument flags. */
80:
81: static int mdoc_argvflags[MDOC_ARG_MAX] = {
82: ARGV_NONE, /* MDOC_Split */
83: ARGV_NONE, /* MDOC_Nosplit */
84: ARGV_NONE, /* MDOC_Ragged */
85: ARGV_NONE, /* MDOC_Unfilled */
86: ARGV_NONE, /* MDOC_Literal */
87: ARGV_NONE, /* MDOC_File */
88: ARGV_SINGLE, /* MDOC_Offset */
89: ARGV_NONE, /* MDOC_Bullet */
90: ARGV_NONE, /* MDOC_Dash */
91: ARGV_NONE, /* MDOC_Hyphen */
92: ARGV_NONE, /* MDOC_Item */
93: ARGV_NONE, /* MDOC_Enum */
94: ARGV_NONE, /* MDOC_Tag */
95: ARGV_NONE, /* MDOC_Diag */
96: ARGV_NONE, /* MDOC_Hang */
97: ARGV_NONE, /* MDOC_Ohang */
98: ARGV_NONE, /* MDOC_Inset */
99: ARGV_MULTI, /* MDOC_Column */
100: ARGV_SINGLE, /* MDOC_Width */
101: ARGV_NONE, /* MDOC_Compact */
102: ARGV_OPT_SINGLE, /* MDOC_Std */
103: ARGV_NONE, /* MDOC_Filled */
104: ARGV_NONE, /* MDOC_Words */
105: ARGV_NONE, /* MDOC_Emphasis */
106: ARGV_NONE, /* MDOC_Symbolic */
107: ARGV_NONE /* MDOC_Symbolic */
108: };
109:
110: static int mdoc_argflags[MDOC_MAX] = {
1.5 kristaps 111: 0, /* Ap */
1.1 kristaps 112: 0, /* Dd */
113: 0, /* Dt */
114: 0, /* Os */
115: ARGS_QUOTED, /* Sh */
116: ARGS_QUOTED, /* Ss */
117: ARGS_DELIM, /* Pp */
118: ARGS_DELIM, /* D1 */
119: ARGS_DELIM | ARGS_QUOTED, /* Dl */
120: 0, /* Bd */
121: 0, /* Ed */
1.7 ! kristaps 122: ARGS_QUOTED, /* Bl */
1.1 kristaps 123: 0, /* El */
124: 0, /* It */
125: ARGS_DELIM, /* Ad */
126: ARGS_DELIM, /* An */
127: ARGS_DELIM | ARGS_QUOTED, /* Ar */
128: ARGS_QUOTED, /* Cd */
129: ARGS_DELIM, /* Cm */
130: ARGS_DELIM, /* Dv */
131: ARGS_DELIM, /* Er */
132: ARGS_DELIM, /* Ev */
133: 0, /* Ex */
134: ARGS_DELIM | ARGS_QUOTED, /* Fa */
135: 0, /* Fd */
136: ARGS_DELIM, /* Fl */
137: ARGS_DELIM | ARGS_QUOTED, /* Fn */
138: ARGS_DELIM | ARGS_QUOTED, /* Ft */
139: ARGS_DELIM, /* Ic */
140: 0, /* In */
141: ARGS_DELIM | ARGS_QUOTED, /* Li */
142: ARGS_QUOTED, /* Nd */
143: ARGS_DELIM, /* Nm */
144: ARGS_DELIM, /* Op */
145: 0, /* Ot */
146: ARGS_DELIM, /* Pa */
147: 0, /* Rv */
148: ARGS_DELIM | ARGS_ARGVLIKE, /* St */
149: ARGS_DELIM, /* Va */
150: ARGS_DELIM, /* Vt */
151: ARGS_DELIM, /* Xr */
152: ARGS_QUOTED, /* %A */
153: ARGS_QUOTED, /* %B */
154: ARGS_QUOTED, /* %D */
155: ARGS_QUOTED, /* %I */
156: ARGS_QUOTED, /* %J */
157: ARGS_QUOTED, /* %N */
158: ARGS_QUOTED, /* %O */
159: ARGS_QUOTED, /* %P */
160: ARGS_QUOTED, /* %R */
161: ARGS_QUOTED, /* %T */
162: ARGS_QUOTED, /* %V */
163: ARGS_DELIM, /* Ac */
164: 0, /* Ao */
165: ARGS_DELIM, /* Aq */
166: ARGS_DELIM, /* At */
167: ARGS_DELIM, /* Bc */
168: 0, /* Bf */
169: 0, /* Bo */
170: ARGS_DELIM, /* Bq */
171: ARGS_DELIM, /* Bsx */
172: ARGS_DELIM, /* Bx */
173: 0, /* Db */
174: ARGS_DELIM, /* Dc */
175: 0, /* Do */
176: ARGS_DELIM, /* Dq */
177: ARGS_DELIM, /* Ec */
178: 0, /* Ef */
179: ARGS_DELIM, /* Em */
180: 0, /* Eo */
181: ARGS_DELIM, /* Fx */
182: ARGS_DELIM, /* Ms */
183: ARGS_DELIM, /* No */
184: ARGS_DELIM, /* Ns */
185: ARGS_DELIM, /* Nx */
186: ARGS_DELIM, /* Ox */
187: ARGS_DELIM, /* Pc */
188: ARGS_DELIM, /* Pf */
189: 0, /* Po */
190: ARGS_DELIM, /* Pq */
191: ARGS_DELIM, /* Qc */
192: ARGS_DELIM, /* Ql */
193: 0, /* Qo */
194: ARGS_DELIM, /* Qq */
195: 0, /* Re */
196: 0, /* Rs */
197: ARGS_DELIM, /* Sc */
198: 0, /* So */
199: ARGS_DELIM, /* Sq */
200: 0, /* Sm */
201: ARGS_DELIM, /* Sx */
202: ARGS_DELIM | ARGS_QUOTED, /* Sy */
203: ARGS_DELIM, /* Tn */
204: ARGS_DELIM, /* Ux */
205: ARGS_DELIM, /* Xc */
206: 0, /* Xo */
207: ARGS_QUOTED, /* Fo */
208: 0, /* Fc */
209: 0, /* Oo */
210: ARGS_DELIM, /* Oc */
211: 0, /* Bk */
212: 0, /* Ek */
213: 0, /* Bt */
214: 0, /* Hf */
215: 0, /* Fr */
216: 0, /* Ud */
217: 0, /* Lb */
218: ARGS_DELIM, /* Lp */
219: ARGS_DELIM | ARGS_QUOTED, /* Lk */
220: ARGS_DELIM | ARGS_QUOTED, /* Mt */
221: ARGS_DELIM, /* Brq */
222: 0, /* Bro */
223: ARGS_DELIM, /* Brc */
224: ARGS_QUOTED, /* %C */
225: 0, /* Es */
226: 0, /* En */
227: 0, /* Dx */
228: ARGS_QUOTED, /* %Q */
229: };
230:
231:
232: /*
233: * Parse an argument from line text. This comes in the form of -key
234: * [value0...], which may either have a single mandatory value, at least
235: * one mandatory value, an optional single value, or no value.
236: */
237: int
238: mdoc_argv(struct mdoc *mdoc, int line, int tok,
239: struct mdoc_arg **v, int *pos, char *buf)
240: {
241: int i;
242: char *p, sv;
243: struct mdoc_argv tmp;
244: struct mdoc_arg *arg;
245:
246: if (0 == buf[*pos])
247: return(ARGV_EOLN);
248:
249: assert(' ' != buf[*pos]);
250:
251: if ('-' != buf[*pos] || ARGS_ARGVLIKE & mdoc_argflags[tok])
252: return(ARGV_WORD);
253:
254: /* Parse through to the first unescaped space. */
255:
256: i = *pos;
257: p = &buf[++(*pos)];
258:
259: assert(*pos > 0);
260:
261: /* LINTED */
262: while (buf[*pos]) {
263: if (' ' == buf[*pos])
264: if ('\\' != buf[*pos - 1])
265: break;
266: (*pos)++;
267: }
268:
269: /* XXX - save zeroed byte, if not an argument. */
270:
271: sv = 0;
272: if (buf[*pos]) {
273: sv = buf[*pos];
274: buf[(*pos)++] = 0;
275: }
276:
277: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
278: tmp.line = line;
279: tmp.pos = *pos;
280:
281: /* See if our token accepts the argument. */
282:
283: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
284: /* XXX - restore saved zeroed byte. */
285: if (sv)
286: buf[*pos - 1] = sv;
287: if ( ! pwarn(mdoc, line, i, WARGVPARM))
288: return(ARGV_ERROR);
289: return(ARGV_WORD);
290: }
291:
292: while (buf[*pos] && ' ' == buf[*pos])
293: (*pos)++;
294:
295: if ( ! argv(mdoc, line, &tmp, pos, buf))
296: return(ARGV_ERROR);
297:
298: if (NULL == (arg = *v)) {
1.2 kristaps 299: *v = calloc(1, sizeof(struct mdoc_arg));
300: if (NULL == *v) {
301: (void)verr(mdoc, EMALLOC);
302: return(ARGV_ERROR);
303: }
1.1 kristaps 304: arg = *v;
305: }
306:
307: arg->argc++;
1.2 kristaps 308: arg->argv = realloc(arg->argv, arg->argc *
1.1 kristaps 309: sizeof(struct mdoc_argv));
310:
1.2 kristaps 311: if (NULL == arg->argv) {
312: (void)verr(mdoc, EMALLOC);
313: return(ARGV_ERROR);
314: }
315:
1.1 kristaps 316: (void)memcpy(&arg->argv[(int)arg->argc - 1],
317: &tmp, sizeof(struct mdoc_argv));
318:
319: return(ARGV_ARG);
320: }
321:
322:
323: void
324: mdoc_argv_free(struct mdoc_arg *p)
325: {
326: int i, j;
327:
328: if (NULL == p)
329: return;
330:
331: if (p->refcnt) {
332: --(p->refcnt);
333: if (p->refcnt)
334: return;
335: }
336: assert(p->argc);
337:
338: /* LINTED */
339: for (i = 0; i < (int)p->argc; i++) {
340: if (0 == p->argv[i].sz)
341: continue;
342: /* LINTED */
343: for (j = 0; j < (int)p->argv[i].sz; j++)
344: free(p->argv[i].value[j]);
345:
346: free(p->argv[i].value);
347: }
348:
349: free(p->argv);
350: free(p);
351: }
352:
353:
354:
355: static int
356: perr(struct mdoc *mdoc, int line, int pos, enum merr code)
357: {
358: char *p;
359:
360: p = NULL;
361: switch (code) {
1.2 kristaps 362: case (EMALLOC):
363: p = "memory exhausted";
364: break;
1.1 kristaps 365: case (EQUOTTERM):
366: p = "unterminated quoted parameter";
367: break;
368: case (EARGVAL):
369: p = "argument requires a value";
370: break;
371: }
372: assert(p);
373: return(mdoc_perr(mdoc, line, pos, p));
374: }
375:
376:
377: static int
378: pwarn(struct mdoc *mdoc, int line, int pos, enum mwarn code)
379: {
380: char *p;
381: int c;
382:
383: p = NULL;
384: c = WARN_SYNTAX;
385: switch (code) {
386: case (WQUOTPARM):
387: p = "unexpected quoted parameter";
388: break;
389: case (WARGVPARM):
390: p = "argument-like parameter";
391: break;
392: case (WCOLEMPTY):
393: p = "last list column is empty";
394: c = WARN_COMPAT;
395: break;
396: case (WTAILWS):
397: p = "trailing whitespace";
398: c = WARN_COMPAT;
399: break;
400: }
401: assert(p);
402: return(mdoc_pwarn(mdoc, line, pos, c, p));
403: }
404:
405:
406: int
407: mdoc_args(struct mdoc *mdoc, int line,
408: int *pos, char *buf, int tok, char **v)
409: {
410: int fl, c, i;
411: struct mdoc_node *n;
412:
413: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
414:
415: /*
416: * Override per-macro argument flags with context-specific ones.
417: * As of now, this is only valid for `It' depending on its list
418: * context.
419: */
420:
421: switch (tok) {
422: case (MDOC_It):
423: for (n = mdoc->last; n; n = n->parent)
424: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
425: break;
426:
427: assert(n);
428: c = (int)(n->args ? n->args->argc : 0);
429: assert(c > 0);
430:
431: /*
432: * Using `Bl -column' adds ARGS_TABSEP to the arguments
433: * and invalidates ARGS_DELIM. Using `Bl -diag' allows
434: * for quoted arguments.
435: */
436:
437: /* LINTED */
438: for (i = 0; i < c; i++) {
439: switch (n->args->argv[i].arg) {
440: case (MDOC_Column):
441: fl |= ARGS_TABSEP;
442: fl &= ~ARGS_DELIM;
443: i = c;
444: break;
445: case (MDOC_Diag):
446: fl |= ARGS_QUOTED;
447: i = c;
448: break;
449: default:
450: break;
451: }
452: }
453: break;
454: default:
455: break;
456: }
457:
458: return(args(mdoc, line, pos, buf, fl, v));
459: }
460:
461:
462: static int
463: args(struct mdoc *mdoc, int line,
464: int *pos, char *buf, int fl, char **v)
465: {
466: int i;
467: char *p, *pp;
468:
469: assert(*pos > 0);
470:
471: if (0 == buf[*pos])
472: return(ARGS_EOLN);
473:
474: if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
475: if ( ! pwarn(mdoc, line, *pos, WQUOTPARM))
476: return(ARGS_ERROR);
477:
478: if ( ! (fl & ARGS_ARGVLIKE) && '-' == buf[*pos])
479: if ( ! pwarn(mdoc, line, *pos, WARGVPARM))
480: return(ARGS_ERROR);
481:
482: /*
483: * If the first character is a delimiter and we're to look for
484: * delimited strings, then pass down the buffer seeing if it
485: * follows the pattern of [[::delim::][ ]+]+.
486: */
487:
488: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
489: for (i = *pos; buf[i]; ) {
490: if ( ! mdoc_iscdelim(buf[i]))
491: break;
492: i++;
493: /* There must be at least one space... */
494: if (0 == buf[i] || ' ' != buf[i])
495: break;
496: i++;
497: while (buf[i] && ' ' == buf[i])
498: i++;
499: }
500: if (0 == buf[i]) {
501: *v = &buf[*pos];
502: return(ARGS_PUNCT);
503: }
504: }
505:
506: /* First parse non-quoted strings. */
507:
508: if ('\"' != buf[*pos] || ! (ARGS_QUOTED & fl)) {
509: *v = &buf[*pos];
510:
511: /*
512: * Thar be dragons here! If we're tab-separated, search
513: * ahead for either a tab or the `Ta' macro.
514: * If a `Ta' is detected, it must be space-buffered before and
515: * after. If either of these hold true, then prune out the
516: * extra spaces and call it an argument.
517: */
518:
519: if (ARGS_TABSEP & fl) {
520: /* Scan ahead to unescaped tab. */
521:
522: p = strchr(*v, '\t');
523:
524: /* Scan ahead to unescaped `Ta'. */
525:
526: for (pp = *v; ; pp++) {
527: if (NULL == (pp = strstr(pp, "Ta")))
528: break;
529: if (pp > *v && ' ' != *(pp - 1))
530: continue;
531: if (' ' == *(pp + 2) || 0 == *(pp + 2))
532: break;
533: }
534:
535: /* Choose delimiter tab/Ta. */
536:
537: if (p && pp)
538: p = (p < pp ? p : pp);
539: else if ( ! p && pp)
540: p = pp;
541:
542: /* Strip delimiter's preceding whitespace. */
543:
544: if (p && p > *v) {
545: pp = p - 1;
546: while (pp > *v && ' ' == *pp)
547: pp--;
548: if (pp == *v && ' ' == *pp)
549: *pp = 0;
550: else if (' ' == *pp)
551: *(pp + 1) = 0;
552: }
553:
554: /* ...in- and proceding whitespace. */
555:
556: if (p && ('\t' != *p)) {
557: *p++ = 0;
558: *p++ = 0;
559: } else if (p)
560: *p++ = 0;
561:
562: if (p) {
563: while (' ' == *p)
564: p++;
565: if (0 != *p)
566: *(p - 1) = 0;
567: *pos += (int)(p - *v);
568: }
569:
570: if (p && 0 == *p)
571: if ( ! pwarn(mdoc, line, *pos, WCOLEMPTY))
572: return(0);
573: if (p && 0 == *p && p > *v && ' ' == *(p - 1))
574: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
575: return(0);
576:
577: if (p)
578: return(ARGS_PHRASE);
579:
580: /* Configure the eoln case, too. */
581:
582: p = strchr(*v, 0);
583: assert(p);
584:
585: if (p > *v && ' ' == *(p - 1))
586: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
587: return(0);
588: *pos += (int)(p - *v);
589:
590: return(ARGS_PHRASE);
591: }
592:
593: /* Do non-tabsep look-ahead here. */
594:
595: if ( ! (ARGS_TABSEP & fl))
596: while (buf[*pos]) {
597: if (' ' == buf[*pos])
598: if ('\\' != buf[*pos - 1])
599: break;
600: (*pos)++;
601: }
602:
603: if (0 == buf[*pos])
604: return(ARGS_WORD);
605:
606: buf[(*pos)++] = 0;
607:
608: if (0 == buf[*pos])
609: return(ARGS_WORD);
610:
611: if ( ! (ARGS_TABSEP & fl))
612: while (buf[*pos] && ' ' == buf[*pos])
613: (*pos)++;
614:
615: if (buf[*pos])
616: return(ARGS_WORD);
617:
618: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
619: return(ARGS_ERROR);
620:
621: return(ARGS_WORD);
622: }
623:
624: /*
625: * If we're a quoted string (and quoted strings are allowed),
626: * then parse ahead to the next quote. If none's found, it's an
627: * error. After, parse to the next word.
628: */
629:
630: *v = &buf[++(*pos)];
631:
632: while (buf[*pos] && '\"' != buf[*pos])
633: (*pos)++;
634:
635: if (0 == buf[*pos]) {
636: (void)perr(mdoc, line, *pos, EQUOTTERM);
637: return(ARGS_ERROR);
638: }
639:
640: buf[(*pos)++] = 0;
641: if (0 == buf[*pos])
642: return(ARGS_QWORD);
643:
644: while (buf[*pos] && ' ' == buf[*pos])
645: (*pos)++;
646:
647: if (buf[*pos])
648: return(ARGS_QWORD);
649:
650: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
651: return(ARGS_ERROR);
652:
653: return(ARGS_QWORD);
654: }
655:
656:
657: static int
658: argv_a2arg(int tok, const char *argv)
659: {
660:
661: /*
662: * Parse an argument identifier from its text. XXX - this
663: * should really be table-driven to clarify the code.
664: *
665: * If you add an argument to the list, make sure that you
666: * register it here with its one or more macros!
667: */
668:
669: switch (tok) {
670: case (MDOC_An):
1.2 kristaps 671: if (0 == strcmp(argv, "split"))
1.1 kristaps 672: return(MDOC_Split);
1.2 kristaps 673: else if (0 == strcmp(argv, "nosplit"))
1.1 kristaps 674: return(MDOC_Nosplit);
675: break;
676:
677: case (MDOC_Bd):
1.2 kristaps 678: if (0 == strcmp(argv, "ragged"))
1.1 kristaps 679: return(MDOC_Ragged);
1.2 kristaps 680: else if (0 == strcmp(argv, "unfilled"))
1.1 kristaps 681: return(MDOC_Unfilled);
1.2 kristaps 682: else if (0 == strcmp(argv, "filled"))
1.1 kristaps 683: return(MDOC_Filled);
1.2 kristaps 684: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 685: return(MDOC_Literal);
1.2 kristaps 686: else if (0 == strcmp(argv, "file"))
1.1 kristaps 687: return(MDOC_File);
1.2 kristaps 688: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 689: return(MDOC_Offset);
1.2 kristaps 690: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 691: return(MDOC_Compact);
692: break;
693:
694: case (MDOC_Bf):
1.2 kristaps 695: if (0 == strcmp(argv, "emphasis"))
1.1 kristaps 696: return(MDOC_Emphasis);
1.2 kristaps 697: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 698: return(MDOC_Literal);
1.2 kristaps 699: else if (0 == strcmp(argv, "symbolic"))
1.1 kristaps 700: return(MDOC_Symbolic);
701: break;
702:
703: case (MDOC_Bk):
1.2 kristaps 704: if (0 == strcmp(argv, "words"))
1.1 kristaps 705: return(MDOC_Words);
706: break;
707:
708: case (MDOC_Bl):
1.2 kristaps 709: if (0 == strcmp(argv, "bullet"))
1.1 kristaps 710: return(MDOC_Bullet);
1.2 kristaps 711: else if (0 == strcmp(argv, "dash"))
1.1 kristaps 712: return(MDOC_Dash);
1.2 kristaps 713: else if (0 == strcmp(argv, "hyphen"))
1.1 kristaps 714: return(MDOC_Hyphen);
1.2 kristaps 715: else if (0 == strcmp(argv, "item"))
1.1 kristaps 716: return(MDOC_Item);
1.2 kristaps 717: else if (0 == strcmp(argv, "enum"))
1.1 kristaps 718: return(MDOC_Enum);
1.2 kristaps 719: else if (0 == strcmp(argv, "tag"))
1.1 kristaps 720: return(MDOC_Tag);
1.2 kristaps 721: else if (0 == strcmp(argv, "diag"))
1.1 kristaps 722: return(MDOC_Diag);
1.2 kristaps 723: else if (0 == strcmp(argv, "hang"))
1.1 kristaps 724: return(MDOC_Hang);
1.2 kristaps 725: else if (0 == strcmp(argv, "ohang"))
1.1 kristaps 726: return(MDOC_Ohang);
1.2 kristaps 727: else if (0 == strcmp(argv, "inset"))
1.1 kristaps 728: return(MDOC_Inset);
1.2 kristaps 729: else if (0 == strcmp(argv, "column"))
1.1 kristaps 730: return(MDOC_Column);
1.2 kristaps 731: else if (0 == strcmp(argv, "width"))
1.1 kristaps 732: return(MDOC_Width);
1.2 kristaps 733: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 734: return(MDOC_Offset);
1.2 kristaps 735: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 736: return(MDOC_Compact);
1.2 kristaps 737: else if (0 == strcmp(argv, "nested"))
1.1 kristaps 738: return(MDOC_Nested);
739: break;
740:
741: case (MDOC_Rv):
742: /* FALLTHROUGH */
743: case (MDOC_Ex):
1.2 kristaps 744: if (0 == strcmp(argv, "std"))
1.1 kristaps 745: return(MDOC_Std);
746: break;
747: default:
748: break;
749: }
750:
751: return(MDOC_ARG_MAX);
752: }
753:
754:
755: static int
756: argv_multi(struct mdoc *mdoc, int line,
757: struct mdoc_argv *v, int *pos, char *buf)
758: {
759: int c, ppos;
760: char *p;
761:
762: ppos = *pos;
763:
764: for (v->sz = 0; ; v->sz++) {
765: if ('-' == buf[*pos])
766: break;
767: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
768: if (ARGS_ERROR == c)
769: return(0);
770: else if (ARGS_EOLN == c)
771: break;
772:
1.2 kristaps 773: if (0 == v->sz % MULTI_STEP) {
774: v->value = realloc(v->value,
1.1 kristaps 775: (v->sz + MULTI_STEP) * sizeof(char *));
1.2 kristaps 776: if (NULL == v->value) {
777: (void)verr(mdoc, EMALLOC);
778: return(ARGV_ERROR);
779: }
780: }
1.1 kristaps 781: if (NULL == (v->value[(int)v->sz] = strdup(p)))
1.2 kristaps 782: return(verr(mdoc, EMALLOC));
1.1 kristaps 783: }
784:
1.7 ! kristaps 785: return(1);
1.1 kristaps 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: }
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