Annotation of mandoc/mdoc_argv.c, Revision 1.2
1.2 ! kristaps 1: /* $Id: mdoc_argv.c,v 1.1 2009/03/27 15:00:15 kristaps Exp $ */
1.1 kristaps 2: /*
3: * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@openbsd.org>
4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the
7: * above copyright notice and this permission notice appear in all
8: * copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
11: * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
12: * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
13: * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
14: * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
15: * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
16: * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17: * PERFORMANCE OF THIS SOFTWARE.
18: */
19: #include <sys/types.h>
20:
21: #include <assert.h>
22: #include <ctype.h>
23: #include <stdlib.h>
24: #include <stdio.h>
25: #include <string.h>
26:
27: #include "libmdoc.h"
28:
29: /*
30: * Routines to parse arguments of macros. Arguments follow the syntax
31: * of `-arg [val [valN...]]'. Arguments come in all types: quoted
32: * arguments, multiple arguments per value, no-value arguments, etc.
33: *
34: * There's no limit to the number or arguments that may be allocated.
35: */
36:
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: enum mwarn {
50: WQUOTPARM,
51: WARGVPARM,
52: WCOLEMPTY,
53: WTAILWS
54: };
55:
56: enum merr {
57: EQUOTTERM,
1.2 ! kristaps 58: EMALLOC,
1.1 kristaps 59: EARGVAL
60: };
61:
62: static int argv_a2arg(int, const char *);
63: static int args(struct mdoc *, int, int *,
64: char *, int, char **);
65: static int argv(struct mdoc *, int,
66: struct mdoc_argv *, int *, char *);
67: static int argv_single(struct mdoc *, int,
68: struct mdoc_argv *, int *, char *);
69: static int argv_opt_single(struct mdoc *, int,
70: struct mdoc_argv *, int *, char *);
71: static int argv_multi(struct mdoc *, int,
72: struct mdoc_argv *, int *, char *);
73: static int pwarn(struct mdoc *, int, int, enum mwarn);
74: static int perr(struct mdoc *, int, int, enum merr);
75:
1.2 ! kristaps 76: #define verr(m, t) perr((m), (m)->last->line, (m)->last->pos, (t))
! 77:
1.1 kristaps 78: /* Per-argument flags. */
79:
80: static int mdoc_argvflags[MDOC_ARG_MAX] = {
81: ARGV_NONE, /* MDOC_Split */
82: ARGV_NONE, /* MDOC_Nosplit */
83: ARGV_NONE, /* MDOC_Ragged */
84: ARGV_NONE, /* MDOC_Unfilled */
85: ARGV_NONE, /* MDOC_Literal */
86: ARGV_NONE, /* MDOC_File */
87: ARGV_SINGLE, /* MDOC_Offset */
88: ARGV_NONE, /* MDOC_Bullet */
89: ARGV_NONE, /* MDOC_Dash */
90: ARGV_NONE, /* MDOC_Hyphen */
91: ARGV_NONE, /* MDOC_Item */
92: ARGV_NONE, /* MDOC_Enum */
93: ARGV_NONE, /* MDOC_Tag */
94: ARGV_NONE, /* MDOC_Diag */
95: ARGV_NONE, /* MDOC_Hang */
96: ARGV_NONE, /* MDOC_Ohang */
97: ARGV_NONE, /* MDOC_Inset */
98: ARGV_MULTI, /* MDOC_Column */
99: ARGV_SINGLE, /* MDOC_Width */
100: ARGV_NONE, /* MDOC_Compact */
101: ARGV_OPT_SINGLE, /* MDOC_Std */
102: ARGV_NONE, /* MDOC_Filled */
103: ARGV_NONE, /* MDOC_Words */
104: ARGV_NONE, /* MDOC_Emphasis */
105: ARGV_NONE, /* MDOC_Symbolic */
106: ARGV_NONE /* MDOC_Symbolic */
107: };
108:
109: static int mdoc_argflags[MDOC_MAX] = {
110: 0, /* \" */
111: 0, /* Dd */
112: 0, /* Dt */
113: 0, /* Os */
114: ARGS_QUOTED, /* Sh */
115: ARGS_QUOTED, /* Ss */
116: ARGS_DELIM, /* Pp */
117: ARGS_DELIM, /* D1 */
118: ARGS_DELIM | ARGS_QUOTED, /* Dl */
119: 0, /* Bd */
120: 0, /* Ed */
121: 0, /* Bl */
122: 0, /* El */
123: 0, /* It */
124: ARGS_DELIM, /* Ad */
125: ARGS_DELIM, /* An */
126: ARGS_DELIM | ARGS_QUOTED, /* Ar */
127: ARGS_QUOTED, /* Cd */
128: ARGS_DELIM, /* Cm */
129: ARGS_DELIM, /* Dv */
130: ARGS_DELIM, /* Er */
131: ARGS_DELIM, /* Ev */
132: 0, /* Ex */
133: ARGS_DELIM | ARGS_QUOTED, /* Fa */
134: 0, /* Fd */
135: ARGS_DELIM, /* Fl */
136: ARGS_DELIM | ARGS_QUOTED, /* Fn */
137: ARGS_DELIM | ARGS_QUOTED, /* Ft */
138: ARGS_DELIM, /* Ic */
139: 0, /* In */
140: ARGS_DELIM | ARGS_QUOTED, /* Li */
141: ARGS_QUOTED, /* Nd */
142: ARGS_DELIM, /* Nm */
143: ARGS_DELIM, /* Op */
144: 0, /* Ot */
145: ARGS_DELIM, /* Pa */
146: 0, /* Rv */
147: ARGS_DELIM | ARGS_ARGVLIKE, /* St */
148: ARGS_DELIM, /* Va */
149: ARGS_DELIM, /* Vt */
150: ARGS_DELIM, /* Xr */
151: ARGS_QUOTED, /* %A */
152: ARGS_QUOTED, /* %B */
153: ARGS_QUOTED, /* %D */
154: ARGS_QUOTED, /* %I */
155: ARGS_QUOTED, /* %J */
156: ARGS_QUOTED, /* %N */
157: ARGS_QUOTED, /* %O */
158: ARGS_QUOTED, /* %P */
159: ARGS_QUOTED, /* %R */
160: ARGS_QUOTED, /* %T */
161: ARGS_QUOTED, /* %V */
162: ARGS_DELIM, /* Ac */
163: 0, /* Ao */
164: ARGS_DELIM, /* Aq */
165: ARGS_DELIM, /* At */
166: ARGS_DELIM, /* Bc */
167: 0, /* Bf */
168: 0, /* Bo */
169: ARGS_DELIM, /* Bq */
170: ARGS_DELIM, /* Bsx */
171: ARGS_DELIM, /* Bx */
172: 0, /* Db */
173: ARGS_DELIM, /* Dc */
174: 0, /* Do */
175: ARGS_DELIM, /* Dq */
176: ARGS_DELIM, /* Ec */
177: 0, /* Ef */
178: ARGS_DELIM, /* Em */
179: 0, /* Eo */
180: ARGS_DELIM, /* Fx */
181: ARGS_DELIM, /* Ms */
182: ARGS_DELIM, /* No */
183: ARGS_DELIM, /* Ns */
184: ARGS_DELIM, /* Nx */
185: ARGS_DELIM, /* Ox */
186: ARGS_DELIM, /* Pc */
187: ARGS_DELIM, /* Pf */
188: 0, /* Po */
189: ARGS_DELIM, /* Pq */
190: ARGS_DELIM, /* Qc */
191: ARGS_DELIM, /* Ql */
192: 0, /* Qo */
193: ARGS_DELIM, /* Qq */
194: 0, /* Re */
195: 0, /* Rs */
196: ARGS_DELIM, /* Sc */
197: 0, /* So */
198: ARGS_DELIM, /* Sq */
199: 0, /* Sm */
200: ARGS_DELIM, /* Sx */
201: ARGS_DELIM | ARGS_QUOTED, /* Sy */
202: ARGS_DELIM, /* Tn */
203: ARGS_DELIM, /* Ux */
204: ARGS_DELIM, /* Xc */
205: 0, /* Xo */
206: ARGS_QUOTED, /* Fo */
207: 0, /* Fc */
208: 0, /* Oo */
209: ARGS_DELIM, /* Oc */
210: 0, /* Bk */
211: 0, /* Ek */
212: 0, /* Bt */
213: 0, /* Hf */
214: 0, /* Fr */
215: 0, /* Ud */
216: 0, /* Lb */
217: 0, /* Ap */
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:
785: if (v->sz)
786: return(1);
787:
788: return(perr(mdoc, line, ppos, EARGVAL));
789: }
790:
791:
792: static int
793: argv_opt_single(struct mdoc *mdoc, int line,
794: struct mdoc_argv *v, int *pos, char *buf)
795: {
796: int c;
797: char *p;
798:
799: if ('-' == buf[*pos])
800: return(1);
801:
802: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
803: if (ARGS_ERROR == c)
804: return(0);
805: if (ARGS_EOLN == c)
806: return(1);
807:
808: v->sz = 1;
809: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.2 ! kristaps 810: return(verr(mdoc, EMALLOC));
1.1 kristaps 811: if (NULL == (v->value[0] = strdup(p)))
1.2 ! kristaps 812: return(verr(mdoc, EMALLOC));
! 813:
1.1 kristaps 814: return(1);
815: }
816:
817:
818: /*
819: * Parse a single, mandatory value from the stream.
820: */
821: static int
822: argv_single(struct mdoc *mdoc, int line,
823: struct mdoc_argv *v, int *pos, char *buf)
824: {
825: int c, ppos;
826: char *p;
827:
828: ppos = *pos;
829:
830: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
831: if (ARGS_ERROR == c)
832: return(0);
833: if (ARGS_EOLN == c)
834: return(perr(mdoc, line, ppos, EARGVAL));
835:
836: v->sz = 1;
837: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.2 ! kristaps 838: return(verr(mdoc, EMALLOC));
1.1 kristaps 839: if (NULL == (v->value[0] = strdup(p)))
1.2 ! kristaps 840: return(verr(mdoc, EMALLOC));
! 841:
1.1 kristaps 842: return(1);
843: }
844:
845:
846: /*
847: * Determine rules for parsing arguments. Arguments can either accept
848: * no parameters, an optional single parameter, one parameter, or
849: * multiple parameters.
850: */
851: static int
852: argv(struct mdoc *mdoc, int line,
853: struct mdoc_argv *v, int *pos, char *buf)
854: {
855:
856: v->sz = 0;
857: v->value = NULL;
858:
859: switch (mdoc_argvflags[v->arg]) {
860: case (ARGV_SINGLE):
861: return(argv_single(mdoc, line, v, pos, buf));
862: case (ARGV_MULTI):
863: return(argv_multi(mdoc, line, v, pos, buf));
864: case (ARGV_OPT_SINGLE):
865: return(argv_opt_single(mdoc, line, v, pos, buf));
866: default:
867: /* ARGV_NONE */
868: break;
869: }
870:
871: return(1);
872: }
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