Annotation of mandoc/mdoc_argv.c, Revision 1.4
1.4 ! kristaps 1: /* $Id: mdoc_argv.c,v 1.3 2009/04/12 19:45:26 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:
35: #define ARGS_QUOTED (1 << 0)
36: #define ARGS_DELIM (1 << 1)
37: #define ARGS_TABSEP (1 << 2)
38: #define ARGS_ARGVLIKE (1 << 3)
39:
40: #define ARGV_NONE (1 << 0)
41: #define ARGV_SINGLE (1 << 1)
42: #define ARGV_MULTI (1 << 2)
43: #define ARGV_OPT_SINGLE (1 << 3)
44:
45: #define MULTI_STEP 5
46:
47: enum mwarn {
48: WQUOTPARM,
49: WARGVPARM,
50: WCOLEMPTY,
51: WTAILWS
52: };
53:
54: enum merr {
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 *);
71: static int pwarn(struct mdoc *, int, int, enum mwarn);
72: static int perr(struct mdoc *, int, int, enum merr);
73:
1.2 kristaps 74: #define verr(m, t) perr((m), (m)->last->line, (m)->last->pos, (t))
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] = {
108: 0, /* \" */
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 */
119: 0, /* Bl */
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: 0, /* Ap */
216: ARGS_DELIM, /* Lp */
217: ARGS_DELIM | ARGS_QUOTED, /* Lk */
218: ARGS_DELIM | ARGS_QUOTED, /* Mt */
219: ARGS_DELIM, /* Brq */
220: 0, /* Bro */
221: ARGS_DELIM, /* Brc */
222: ARGS_QUOTED, /* %C */
223: 0, /* Es */
224: 0, /* En */
225: 0, /* Dx */
226: ARGS_QUOTED, /* %Q */
227: };
228:
229:
230: /*
231: * Parse an argument from line text. This comes in the form of -key
232: * [value0...], which may either have a single mandatory value, at least
233: * one mandatory value, an optional single value, or no value.
234: */
235: int
236: mdoc_argv(struct mdoc *mdoc, int line, int tok,
237: struct mdoc_arg **v, int *pos, char *buf)
238: {
239: int i;
240: char *p, sv;
241: struct mdoc_argv tmp;
242: struct mdoc_arg *arg;
243:
244: if (0 == buf[*pos])
245: return(ARGV_EOLN);
246:
247: assert(' ' != buf[*pos]);
248:
249: if ('-' != buf[*pos] || ARGS_ARGVLIKE & mdoc_argflags[tok])
250: return(ARGV_WORD);
251:
252: /* Parse through to the first unescaped space. */
253:
254: i = *pos;
255: p = &buf[++(*pos)];
256:
257: assert(*pos > 0);
258:
259: /* LINTED */
260: while (buf[*pos]) {
261: if (' ' == buf[*pos])
262: if ('\\' != buf[*pos - 1])
263: break;
264: (*pos)++;
265: }
266:
267: /* XXX - save zeroed byte, if not an argument. */
268:
269: sv = 0;
270: if (buf[*pos]) {
271: sv = buf[*pos];
272: buf[(*pos)++] = 0;
273: }
274:
275: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
276: tmp.line = line;
277: tmp.pos = *pos;
278:
279: /* See if our token accepts the argument. */
280:
281: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
282: /* XXX - restore saved zeroed byte. */
283: if (sv)
284: buf[*pos - 1] = sv;
285: if ( ! pwarn(mdoc, line, i, WARGVPARM))
286: return(ARGV_ERROR);
287: return(ARGV_WORD);
288: }
289:
290: while (buf[*pos] && ' ' == buf[*pos])
291: (*pos)++;
292:
293: if ( ! argv(mdoc, line, &tmp, pos, buf))
294: return(ARGV_ERROR);
295:
296: if (NULL == (arg = *v)) {
1.2 kristaps 297: *v = calloc(1, sizeof(struct mdoc_arg));
298: if (NULL == *v) {
299: (void)verr(mdoc, EMALLOC);
300: return(ARGV_ERROR);
301: }
1.1 kristaps 302: arg = *v;
303: }
304:
305: arg->argc++;
1.2 kristaps 306: arg->argv = realloc(arg->argv, arg->argc *
1.1 kristaps 307: sizeof(struct mdoc_argv));
308:
1.2 kristaps 309: if (NULL == arg->argv) {
310: (void)verr(mdoc, EMALLOC);
311: return(ARGV_ERROR);
312: }
313:
1.1 kristaps 314: (void)memcpy(&arg->argv[(int)arg->argc - 1],
315: &tmp, sizeof(struct mdoc_argv));
316:
317: return(ARGV_ARG);
318: }
319:
320:
321: void
322: mdoc_argv_free(struct mdoc_arg *p)
323: {
324: int i, j;
325:
326: if (NULL == p)
327: return;
328:
329: if (p->refcnt) {
330: --(p->refcnt);
331: if (p->refcnt)
332: return;
333: }
334: assert(p->argc);
335:
336: /* LINTED */
337: for (i = 0; i < (int)p->argc; i++) {
338: if (0 == p->argv[i].sz)
339: continue;
340: /* LINTED */
341: for (j = 0; j < (int)p->argv[i].sz; j++)
342: free(p->argv[i].value[j]);
343:
344: free(p->argv[i].value);
345: }
346:
347: free(p->argv);
348: free(p);
349: }
350:
351:
352:
353: static int
354: perr(struct mdoc *mdoc, int line, int pos, enum merr code)
355: {
356: char *p;
357:
358: p = NULL;
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;
369: }
370: assert(p);
371: return(mdoc_perr(mdoc, line, pos, p));
372: }
373:
374:
375: static int
376: pwarn(struct mdoc *mdoc, int line, int pos, enum mwarn code)
377: {
378: char *p;
379: int c;
380:
381: p = NULL;
382: c = WARN_SYNTAX;
383: switch (code) {
384: case (WQUOTPARM):
385: p = "unexpected quoted parameter";
386: break;
387: case (WARGVPARM):
388: p = "argument-like parameter";
389: break;
390: case (WCOLEMPTY):
391: p = "last list column is empty";
392: c = WARN_COMPAT;
393: break;
394: case (WTAILWS):
395: p = "trailing whitespace";
396: c = WARN_COMPAT;
397: break;
398: }
399: assert(p);
400: return(mdoc_pwarn(mdoc, line, pos, c, p));
401: }
402:
403:
404: int
405: mdoc_args(struct mdoc *mdoc, int line,
406: int *pos, char *buf, int tok, char **v)
407: {
408: int fl, c, i;
409: struct mdoc_node *n;
410:
411: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
412:
413: /*
414: * Override per-macro argument flags with context-specific ones.
415: * As of now, this is only valid for `It' depending on its list
416: * context.
417: */
418:
419: switch (tok) {
420: case (MDOC_It):
421: for (n = mdoc->last; n; n = n->parent)
422: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
423: break;
424:
425: assert(n);
426: c = (int)(n->args ? n->args->argc : 0);
427: assert(c > 0);
428:
429: /*
430: * Using `Bl -column' adds ARGS_TABSEP to the arguments
431: * and invalidates ARGS_DELIM. Using `Bl -diag' allows
432: * for quoted arguments.
433: */
434:
435: /* LINTED */
436: for (i = 0; i < c; i++) {
437: switch (n->args->argv[i].arg) {
438: case (MDOC_Column):
439: fl |= ARGS_TABSEP;
440: fl &= ~ARGS_DELIM;
441: i = c;
442: break;
443: case (MDOC_Diag):
444: fl |= ARGS_QUOTED;
445: i = c;
446: break;
447: default:
448: break;
449: }
450: }
451: break;
452: default:
453: break;
454: }
455:
456: return(args(mdoc, line, pos, buf, fl, v));
457: }
458:
459:
460: static int
461: args(struct mdoc *mdoc, int line,
462: int *pos, char *buf, int fl, char **v)
463: {
464: int i;
465: char *p, *pp;
466:
467: assert(*pos > 0);
468:
469: if (0 == buf[*pos])
470: return(ARGS_EOLN);
471:
472: if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
473: if ( ! pwarn(mdoc, line, *pos, WQUOTPARM))
474: return(ARGS_ERROR);
475:
476: if ( ! (fl & ARGS_ARGVLIKE) && '-' == buf[*pos])
477: if ( ! pwarn(mdoc, line, *pos, WARGVPARM))
478: return(ARGS_ERROR);
479:
480: /*
481: * If the first character is a delimiter and we're to look for
482: * delimited strings, then pass down the buffer seeing if it
483: * follows the pattern of [[::delim::][ ]+]+.
484: */
485:
486: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
487: for (i = *pos; buf[i]; ) {
488: if ( ! mdoc_iscdelim(buf[i]))
489: break;
490: i++;
491: /* There must be at least one space... */
492: if (0 == buf[i] || ' ' != buf[i])
493: break;
494: i++;
495: while (buf[i] && ' ' == buf[i])
496: i++;
497: }
498: if (0 == buf[i]) {
499: *v = &buf[*pos];
500: return(ARGS_PUNCT);
501: }
502: }
503:
504: /* First parse non-quoted strings. */
505:
506: if ('\"' != buf[*pos] || ! (ARGS_QUOTED & fl)) {
507: *v = &buf[*pos];
508:
509: /*
510: * Thar be dragons here! If we're tab-separated, search
511: * ahead for either a tab or the `Ta' macro.
512: * If a `Ta' is detected, it must be space-buffered before and
513: * after. If either of these hold true, then prune out the
514: * extra spaces and call it an argument.
515: */
516:
517: if (ARGS_TABSEP & fl) {
518: /* Scan ahead to unescaped tab. */
519:
520: p = strchr(*v, '\t');
521:
522: /* Scan ahead to unescaped `Ta'. */
523:
524: for (pp = *v; ; pp++) {
525: if (NULL == (pp = strstr(pp, "Ta")))
526: break;
527: if (pp > *v && ' ' != *(pp - 1))
528: continue;
529: if (' ' == *(pp + 2) || 0 == *(pp + 2))
530: break;
531: }
532:
533: /* Choose delimiter tab/Ta. */
534:
535: if (p && pp)
536: p = (p < pp ? p : pp);
537: else if ( ! p && pp)
538: p = pp;
539:
540: /* Strip delimiter's preceding whitespace. */
541:
542: if (p && p > *v) {
543: pp = p - 1;
544: while (pp > *v && ' ' == *pp)
545: pp--;
546: if (pp == *v && ' ' == *pp)
547: *pp = 0;
548: else if (' ' == *pp)
549: *(pp + 1) = 0;
550: }
551:
552: /* ...in- and proceding whitespace. */
553:
554: if (p && ('\t' != *p)) {
555: *p++ = 0;
556: *p++ = 0;
557: } else if (p)
558: *p++ = 0;
559:
560: if (p) {
561: while (' ' == *p)
562: p++;
563: if (0 != *p)
564: *(p - 1) = 0;
565: *pos += (int)(p - *v);
566: }
567:
568: if (p && 0 == *p)
569: if ( ! pwarn(mdoc, line, *pos, WCOLEMPTY))
570: return(0);
571: if (p && 0 == *p && p > *v && ' ' == *(p - 1))
572: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
573: return(0);
574:
575: if (p)
576: return(ARGS_PHRASE);
577:
578: /* Configure the eoln case, too. */
579:
580: p = strchr(*v, 0);
581: assert(p);
582:
583: if (p > *v && ' ' == *(p - 1))
584: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
585: return(0);
586: *pos += (int)(p - *v);
587:
588: return(ARGS_PHRASE);
589: }
590:
591: /* Do non-tabsep look-ahead here. */
592:
593: if ( ! (ARGS_TABSEP & fl))
594: while (buf[*pos]) {
595: if (' ' == buf[*pos])
596: if ('\\' != buf[*pos - 1])
597: break;
598: (*pos)++;
599: }
600:
601: if (0 == buf[*pos])
602: return(ARGS_WORD);
603:
604: buf[(*pos)++] = 0;
605:
606: if (0 == buf[*pos])
607: return(ARGS_WORD);
608:
609: if ( ! (ARGS_TABSEP & fl))
610: while (buf[*pos] && ' ' == buf[*pos])
611: (*pos)++;
612:
613: if (buf[*pos])
614: return(ARGS_WORD);
615:
616: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
617: return(ARGS_ERROR);
618:
619: return(ARGS_WORD);
620: }
621:
622: /*
623: * If we're a quoted string (and quoted strings are allowed),
624: * then parse ahead to the next quote. If none's found, it's an
625: * error. After, parse to the next word.
626: */
627:
628: *v = &buf[++(*pos)];
629:
630: while (buf[*pos] && '\"' != buf[*pos])
631: (*pos)++;
632:
633: if (0 == buf[*pos]) {
634: (void)perr(mdoc, line, *pos, EQUOTTERM);
635: return(ARGS_ERROR);
636: }
637:
638: buf[(*pos)++] = 0;
639: if (0 == buf[*pos])
640: return(ARGS_QWORD);
641:
642: while (buf[*pos] && ' ' == buf[*pos])
643: (*pos)++;
644:
645: if (buf[*pos])
646: return(ARGS_QWORD);
647:
648: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
649: return(ARGS_ERROR);
650:
651: return(ARGS_QWORD);
652: }
653:
654:
655: static int
656: argv_a2arg(int tok, const char *argv)
657: {
658:
659: /*
660: * Parse an argument identifier from its text. XXX - this
661: * should really be table-driven to clarify the code.
662: *
663: * If you add an argument to the list, make sure that you
664: * register it here with its one or more macros!
665: */
666:
667: switch (tok) {
668: case (MDOC_An):
1.2 kristaps 669: if (0 == strcmp(argv, "split"))
1.1 kristaps 670: return(MDOC_Split);
1.2 kristaps 671: else if (0 == strcmp(argv, "nosplit"))
1.1 kristaps 672: return(MDOC_Nosplit);
673: break;
674:
675: case (MDOC_Bd):
1.2 kristaps 676: if (0 == strcmp(argv, "ragged"))
1.1 kristaps 677: return(MDOC_Ragged);
1.2 kristaps 678: else if (0 == strcmp(argv, "unfilled"))
1.1 kristaps 679: return(MDOC_Unfilled);
1.2 kristaps 680: else if (0 == strcmp(argv, "filled"))
1.1 kristaps 681: return(MDOC_Filled);
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, "file"))
1.1 kristaps 685: return(MDOC_File);
1.2 kristaps 686: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 687: return(MDOC_Offset);
1.2 kristaps 688: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 689: return(MDOC_Compact);
690: break;
691:
692: case (MDOC_Bf):
1.2 kristaps 693: if (0 == strcmp(argv, "emphasis"))
1.1 kristaps 694: return(MDOC_Emphasis);
1.2 kristaps 695: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 696: return(MDOC_Literal);
1.2 kristaps 697: else if (0 == strcmp(argv, "symbolic"))
1.1 kristaps 698: return(MDOC_Symbolic);
699: break;
700:
701: case (MDOC_Bk):
1.2 kristaps 702: if (0 == strcmp(argv, "words"))
1.1 kristaps 703: return(MDOC_Words);
704: break;
705:
706: case (MDOC_Bl):
1.2 kristaps 707: if (0 == strcmp(argv, "bullet"))
1.1 kristaps 708: return(MDOC_Bullet);
1.2 kristaps 709: else if (0 == strcmp(argv, "dash"))
1.1 kristaps 710: return(MDOC_Dash);
1.2 kristaps 711: else if (0 == strcmp(argv, "hyphen"))
1.1 kristaps 712: return(MDOC_Hyphen);
1.2 kristaps 713: else if (0 == strcmp(argv, "item"))
1.1 kristaps 714: return(MDOC_Item);
1.2 kristaps 715: else if (0 == strcmp(argv, "enum"))
1.1 kristaps 716: return(MDOC_Enum);
1.2 kristaps 717: else if (0 == strcmp(argv, "tag"))
1.1 kristaps 718: return(MDOC_Tag);
1.2 kristaps 719: else if (0 == strcmp(argv, "diag"))
1.1 kristaps 720: return(MDOC_Diag);
1.2 kristaps 721: else if (0 == strcmp(argv, "hang"))
1.1 kristaps 722: return(MDOC_Hang);
1.2 kristaps 723: else if (0 == strcmp(argv, "ohang"))
1.1 kristaps 724: return(MDOC_Ohang);
1.2 kristaps 725: else if (0 == strcmp(argv, "inset"))
1.1 kristaps 726: return(MDOC_Inset);
1.2 kristaps 727: else if (0 == strcmp(argv, "column"))
1.1 kristaps 728: return(MDOC_Column);
1.2 kristaps 729: else if (0 == strcmp(argv, "width"))
1.1 kristaps 730: return(MDOC_Width);
1.2 kristaps 731: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 732: return(MDOC_Offset);
1.2 kristaps 733: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 734: return(MDOC_Compact);
1.2 kristaps 735: else if (0 == strcmp(argv, "nested"))
1.1 kristaps 736: return(MDOC_Nested);
737: break;
738:
739: case (MDOC_Rv):
740: /* FALLTHROUGH */
741: case (MDOC_Ex):
1.2 kristaps 742: if (0 == strcmp(argv, "std"))
1.1 kristaps 743: return(MDOC_Std);
744: break;
745: default:
746: break;
747: }
748:
749: return(MDOC_ARG_MAX);
750: }
751:
752:
753: static int
754: argv_multi(struct mdoc *mdoc, int line,
755: struct mdoc_argv *v, int *pos, char *buf)
756: {
757: int c, ppos;
758: char *p;
759:
760: ppos = *pos;
761:
762: for (v->sz = 0; ; v->sz++) {
763: if ('-' == buf[*pos])
764: break;
765: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
766: if (ARGS_ERROR == c)
767: return(0);
768: else if (ARGS_EOLN == c)
769: break;
770:
1.2 kristaps 771: if (0 == v->sz % MULTI_STEP) {
772: v->value = realloc(v->value,
1.1 kristaps 773: (v->sz + MULTI_STEP) * sizeof(char *));
1.2 kristaps 774: if (NULL == v->value) {
775: (void)verr(mdoc, EMALLOC);
776: return(ARGV_ERROR);
777: }
778: }
1.1 kristaps 779: if (NULL == (v->value[(int)v->sz] = strdup(p)))
1.2 kristaps 780: return(verr(mdoc, EMALLOC));
1.1 kristaps 781: }
782:
783: if (v->sz)
784: return(1);
785:
786: return(perr(mdoc, line, ppos, EARGVAL));
787: }
788:
789:
790: static int
791: argv_opt_single(struct mdoc *mdoc, int line,
792: struct mdoc_argv *v, int *pos, char *buf)
793: {
794: int c;
795: char *p;
796:
797: if ('-' == buf[*pos])
798: return(1);
799:
800: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
801: if (ARGS_ERROR == c)
802: return(0);
803: if (ARGS_EOLN == c)
804: return(1);
805:
806: v->sz = 1;
807: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.2 kristaps 808: return(verr(mdoc, EMALLOC));
1.1 kristaps 809: if (NULL == (v->value[0] = strdup(p)))
1.2 kristaps 810: return(verr(mdoc, EMALLOC));
811:
1.1 kristaps 812: return(1);
813: }
814:
815:
816: /*
817: * Parse a single, mandatory value from the stream.
818: */
819: static int
820: argv_single(struct mdoc *mdoc, int line,
821: struct mdoc_argv *v, int *pos, char *buf)
822: {
823: int c, ppos;
824: char *p;
825:
826: ppos = *pos;
827:
828: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
829: if (ARGS_ERROR == c)
830: return(0);
831: if (ARGS_EOLN == c)
832: return(perr(mdoc, line, ppos, EARGVAL));
833:
834: v->sz = 1;
835: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.2 kristaps 836: return(verr(mdoc, EMALLOC));
1.1 kristaps 837: if (NULL == (v->value[0] = strdup(p)))
1.2 kristaps 838: return(verr(mdoc, EMALLOC));
839:
1.1 kristaps 840: return(1);
841: }
842:
843:
844: /*
845: * Determine rules for parsing arguments. Arguments can either accept
846: * no parameters, an optional single parameter, one parameter, or
847: * multiple parameters.
848: */
849: static int
850: argv(struct mdoc *mdoc, int line,
851: struct mdoc_argv *v, int *pos, char *buf)
852: {
853:
854: v->sz = 0;
855: v->value = NULL;
856:
857: switch (mdoc_argvflags[v->arg]) {
858: case (ARGV_SINGLE):
859: return(argv_single(mdoc, line, v, pos, buf));
860: case (ARGV_MULTI):
861: return(argv_multi(mdoc, line, v, pos, buf));
862: case (ARGV_OPT_SINGLE):
863: return(argv_opt_single(mdoc, line, v, pos, buf));
864: default:
865: /* ARGV_NONE */
866: break;
867: }
868:
869: return(1);
870: }
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