Annotation of mandoc/mdoc_argv.c, Revision 1.16
1.16 ! kristaps 1: /* $Id: mdoc_argv.c,v 1.15 2009/07/17 12:27:49 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". */
36:
1.1 kristaps 37: #define ARGS_QUOTED (1 << 0)
38: #define ARGS_DELIM (1 << 1)
39: #define ARGS_TABSEP (1 << 2)
40:
41: #define ARGV_NONE (1 << 0)
42: #define ARGV_SINGLE (1 << 1)
43: #define ARGV_MULTI (1 << 2)
44: #define ARGV_OPT_SINGLE (1 << 3)
45:
46: #define MULTI_STEP 5
47:
48: static int argv_a2arg(int, const char *);
49: static int args(struct mdoc *, int, int *,
50: char *, int, char **);
51: static int argv(struct mdoc *, int,
52: struct mdoc_argv *, int *, char *);
53: static int argv_single(struct mdoc *, int,
54: struct mdoc_argv *, int *, char *);
55: static int argv_opt_single(struct mdoc *, int,
56: struct mdoc_argv *, int *, char *);
57: static int argv_multi(struct mdoc *, int,
58: struct mdoc_argv *, int *, char *);
1.2 kristaps 59:
1.1 kristaps 60: /* Per-argument flags. */
61:
62: static int mdoc_argvflags[MDOC_ARG_MAX] = {
63: ARGV_NONE, /* MDOC_Split */
64: ARGV_NONE, /* MDOC_Nosplit */
65: ARGV_NONE, /* MDOC_Ragged */
66: ARGV_NONE, /* MDOC_Unfilled */
67: ARGV_NONE, /* MDOC_Literal */
68: ARGV_NONE, /* MDOC_File */
69: ARGV_SINGLE, /* MDOC_Offset */
70: ARGV_NONE, /* MDOC_Bullet */
71: ARGV_NONE, /* MDOC_Dash */
72: ARGV_NONE, /* MDOC_Hyphen */
73: ARGV_NONE, /* MDOC_Item */
74: ARGV_NONE, /* MDOC_Enum */
75: ARGV_NONE, /* MDOC_Tag */
76: ARGV_NONE, /* MDOC_Diag */
77: ARGV_NONE, /* MDOC_Hang */
78: ARGV_NONE, /* MDOC_Ohang */
79: ARGV_NONE, /* MDOC_Inset */
80: ARGV_MULTI, /* MDOC_Column */
81: ARGV_SINGLE, /* MDOC_Width */
82: ARGV_NONE, /* MDOC_Compact */
83: ARGV_OPT_SINGLE, /* MDOC_Std */
84: ARGV_NONE, /* MDOC_Filled */
85: ARGV_NONE, /* MDOC_Words */
86: ARGV_NONE, /* MDOC_Emphasis */
87: ARGV_NONE, /* MDOC_Symbolic */
88: ARGV_NONE /* MDOC_Symbolic */
89: };
90:
91: static int mdoc_argflags[MDOC_MAX] = {
1.5 kristaps 92: 0, /* Ap */
1.1 kristaps 93: 0, /* Dd */
94: 0, /* Dt */
95: 0, /* Os */
96: ARGS_QUOTED, /* Sh */
97: ARGS_QUOTED, /* Ss */
98: ARGS_DELIM, /* Pp */
99: ARGS_DELIM, /* D1 */
100: ARGS_DELIM | ARGS_QUOTED, /* Dl */
101: 0, /* Bd */
102: 0, /* Ed */
1.7 kristaps 103: ARGS_QUOTED, /* Bl */
1.1 kristaps 104: 0, /* El */
105: 0, /* It */
106: ARGS_DELIM, /* Ad */
107: ARGS_DELIM, /* An */
108: ARGS_DELIM | ARGS_QUOTED, /* Ar */
109: ARGS_QUOTED, /* Cd */
110: ARGS_DELIM, /* Cm */
111: ARGS_DELIM, /* Dv */
112: ARGS_DELIM, /* Er */
113: ARGS_DELIM, /* Ev */
114: 0, /* Ex */
115: ARGS_DELIM | ARGS_QUOTED, /* Fa */
116: 0, /* Fd */
117: ARGS_DELIM, /* Fl */
118: ARGS_DELIM | ARGS_QUOTED, /* Fn */
119: ARGS_DELIM | ARGS_QUOTED, /* Ft */
120: ARGS_DELIM, /* Ic */
121: 0, /* In */
122: ARGS_DELIM | ARGS_QUOTED, /* Li */
123: ARGS_QUOTED, /* Nd */
124: ARGS_DELIM, /* Nm */
125: ARGS_DELIM, /* Op */
126: 0, /* Ot */
127: ARGS_DELIM, /* Pa */
128: 0, /* Rv */
1.15 kristaps 129: ARGS_DELIM, /* St */
1.1 kristaps 130: ARGS_DELIM, /* Va */
131: ARGS_DELIM, /* Vt */
132: ARGS_DELIM, /* Xr */
133: ARGS_QUOTED, /* %A */
134: ARGS_QUOTED, /* %B */
135: ARGS_QUOTED, /* %D */
136: ARGS_QUOTED, /* %I */
137: ARGS_QUOTED, /* %J */
138: ARGS_QUOTED, /* %N */
139: ARGS_QUOTED, /* %O */
140: ARGS_QUOTED, /* %P */
141: ARGS_QUOTED, /* %R */
142: ARGS_QUOTED, /* %T */
143: ARGS_QUOTED, /* %V */
144: ARGS_DELIM, /* Ac */
145: 0, /* Ao */
146: ARGS_DELIM, /* Aq */
147: ARGS_DELIM, /* At */
148: ARGS_DELIM, /* Bc */
149: 0, /* Bf */
150: 0, /* Bo */
151: ARGS_DELIM, /* Bq */
152: ARGS_DELIM, /* Bsx */
153: ARGS_DELIM, /* Bx */
154: 0, /* Db */
155: ARGS_DELIM, /* Dc */
156: 0, /* Do */
157: ARGS_DELIM, /* Dq */
158: ARGS_DELIM, /* Ec */
159: 0, /* Ef */
160: ARGS_DELIM, /* Em */
161: 0, /* Eo */
162: ARGS_DELIM, /* Fx */
163: ARGS_DELIM, /* Ms */
164: ARGS_DELIM, /* No */
165: ARGS_DELIM, /* Ns */
166: ARGS_DELIM, /* Nx */
167: ARGS_DELIM, /* Ox */
168: ARGS_DELIM, /* Pc */
169: ARGS_DELIM, /* Pf */
170: 0, /* Po */
171: ARGS_DELIM, /* Pq */
172: ARGS_DELIM, /* Qc */
173: ARGS_DELIM, /* Ql */
174: 0, /* Qo */
175: ARGS_DELIM, /* Qq */
176: 0, /* Re */
177: 0, /* Rs */
178: ARGS_DELIM, /* Sc */
179: 0, /* So */
180: ARGS_DELIM, /* Sq */
181: 0, /* Sm */
182: ARGS_DELIM, /* Sx */
183: ARGS_DELIM | ARGS_QUOTED, /* Sy */
184: ARGS_DELIM, /* Tn */
185: ARGS_DELIM, /* Ux */
186: ARGS_DELIM, /* Xc */
187: 0, /* Xo */
188: ARGS_QUOTED, /* Fo */
189: 0, /* Fc */
190: 0, /* Oo */
191: ARGS_DELIM, /* Oc */
192: 0, /* Bk */
193: 0, /* Ek */
194: 0, /* Bt */
195: 0, /* Hf */
196: 0, /* Fr */
197: 0, /* Ud */
198: 0, /* Lb */
199: ARGS_DELIM, /* Lp */
200: ARGS_DELIM | ARGS_QUOTED, /* Lk */
201: ARGS_DELIM | ARGS_QUOTED, /* Mt */
202: ARGS_DELIM, /* Brq */
203: 0, /* Bro */
204: ARGS_DELIM, /* Brc */
205: ARGS_QUOTED, /* %C */
206: 0, /* Es */
207: 0, /* En */
208: 0, /* Dx */
209: ARGS_QUOTED, /* %Q */
1.14 kristaps 210: 0, /* br */
211: 0, /* sp */
1.1 kristaps 212: };
213:
214:
215: /*
216: * Parse an argument from line text. This comes in the form of -key
217: * [value0...], which may either have a single mandatory value, at least
218: * one mandatory value, an optional single value, or no value.
219: */
220: int
1.11 kristaps 221: mdoc_argv(struct mdoc *m, int line, int tok,
1.1 kristaps 222: struct mdoc_arg **v, int *pos, char *buf)
223: {
224: char *p, sv;
225: struct mdoc_argv tmp;
226: struct mdoc_arg *arg;
227:
228: if (0 == buf[*pos])
229: return(ARGV_EOLN);
230:
231: assert(' ' != buf[*pos]);
232:
233: /* Parse through to the first unescaped space. */
234:
235: p = &buf[++(*pos)];
236:
237: assert(*pos > 0);
238:
239: /* LINTED */
240: while (buf[*pos]) {
241: if (' ' == buf[*pos])
242: if ('\\' != buf[*pos - 1])
243: break;
244: (*pos)++;
245: }
246:
247: /* XXX - save zeroed byte, if not an argument. */
248:
249: sv = 0;
250: if (buf[*pos]) {
251: sv = buf[*pos];
252: buf[(*pos)++] = 0;
253: }
254:
255: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
256: tmp.line = line;
257: tmp.pos = *pos;
258:
259: /* See if our token accepts the argument. */
260:
261: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
262: /* XXX - restore saved zeroed byte. */
263: if (sv)
264: buf[*pos - 1] = sv;
265: return(ARGV_WORD);
266: }
267:
268: while (buf[*pos] && ' ' == buf[*pos])
269: (*pos)++;
270:
1.11 kristaps 271: if ( ! argv(m, line, &tmp, pos, buf))
1.1 kristaps 272: return(ARGV_ERROR);
273:
274: if (NULL == (arg = *v)) {
1.2 kristaps 275: *v = calloc(1, sizeof(struct mdoc_arg));
276: if (NULL == *v) {
1.11 kristaps 277: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 278: return(ARGV_ERROR);
279: }
1.1 kristaps 280: arg = *v;
281: }
282:
283: arg->argc++;
1.2 kristaps 284: arg->argv = realloc(arg->argv, arg->argc *
1.1 kristaps 285: sizeof(struct mdoc_argv));
286:
1.2 kristaps 287: if (NULL == arg->argv) {
1.11 kristaps 288: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 289: return(ARGV_ERROR);
290: }
291:
1.1 kristaps 292: (void)memcpy(&arg->argv[(int)arg->argc - 1],
293: &tmp, sizeof(struct mdoc_argv));
294:
295: return(ARGV_ARG);
296: }
297:
298:
299: void
300: mdoc_argv_free(struct mdoc_arg *p)
301: {
302: int i, j;
303:
304: if (NULL == p)
305: return;
306:
307: if (p->refcnt) {
308: --(p->refcnt);
309: if (p->refcnt)
310: return;
311: }
312: assert(p->argc);
313:
314: /* LINTED */
315: for (i = 0; i < (int)p->argc; i++) {
316: if (0 == p->argv[i].sz)
317: continue;
318: /* LINTED */
319: for (j = 0; j < (int)p->argv[i].sz; j++)
320: free(p->argv[i].value[j]);
321:
322: free(p->argv[i].value);
323: }
324:
325: free(p->argv);
326: free(p);
327: }
328:
329:
330: int
1.11 kristaps 331: mdoc_args(struct mdoc *m, int line,
1.1 kristaps 332: int *pos, char *buf, int tok, char **v)
333: {
334: int fl, c, i;
335: struct mdoc_node *n;
336:
337: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
338:
339: /*
340: * Override per-macro argument flags with context-specific ones.
341: * As of now, this is only valid for `It' depending on its list
342: * context.
343: */
344:
345: switch (tok) {
346: case (MDOC_It):
1.11 kristaps 347: for (n = m->last; n; n = n->parent)
1.1 kristaps 348: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
349: break;
350:
351: assert(n);
352: c = (int)(n->args ? n->args->argc : 0);
353: assert(c > 0);
354:
355: /*
356: * Using `Bl -column' adds ARGS_TABSEP to the arguments
357: * and invalidates ARGS_DELIM. Using `Bl -diag' allows
358: * for quoted arguments.
359: */
360:
361: /* LINTED */
362: for (i = 0; i < c; i++) {
363: switch (n->args->argv[i].arg) {
364: case (MDOC_Column):
365: fl |= ARGS_TABSEP;
366: fl &= ~ARGS_DELIM;
367: i = c;
368: break;
369: case (MDOC_Diag):
370: fl |= ARGS_QUOTED;
371: i = c;
372: break;
373: default:
374: break;
375: }
376: }
377: break;
378: default:
379: break;
380: }
381:
1.11 kristaps 382: return(args(m, line, pos, buf, fl, v));
1.1 kristaps 383: }
384:
385:
386: static int
1.13 kristaps 387: args(struct mdoc *m, int line, int *pos,
388: char *buf, int fl, char **v)
1.1 kristaps 389: {
390: int i;
391: char *p, *pp;
392:
393: assert(*pos > 0);
394:
395: if (0 == buf[*pos])
396: return(ARGS_EOLN);
397:
398: if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
1.11 kristaps 399: if ( ! mdoc_pwarn(m, line, *pos, EQUOTPARM))
1.1 kristaps 400: return(ARGS_ERROR);
401:
402: /*
403: * If the first character is a delimiter and we're to look for
404: * delimited strings, then pass down the buffer seeing if it
405: * follows the pattern of [[::delim::][ ]+]+.
406: */
407:
408: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
409: for (i = *pos; buf[i]; ) {
410: if ( ! mdoc_iscdelim(buf[i]))
411: break;
412: i++;
413: /* There must be at least one space... */
414: if (0 == buf[i] || ' ' != buf[i])
415: break;
416: i++;
417: while (buf[i] && ' ' == buf[i])
418: i++;
419: }
420: if (0 == buf[i]) {
421: *v = &buf[*pos];
422: return(ARGS_PUNCT);
423: }
424: }
425:
426: /* First parse non-quoted strings. */
427:
428: if ('\"' != buf[*pos] || ! (ARGS_QUOTED & fl)) {
429: *v = &buf[*pos];
430:
431: /*
432: * Thar be dragons here! If we're tab-separated, search
433: * ahead for either a tab or the `Ta' macro.
434: * If a `Ta' is detected, it must be space-buffered before and
435: * after. If either of these hold true, then prune out the
436: * extra spaces and call it an argument.
437: */
438:
439: if (ARGS_TABSEP & fl) {
440: /* Scan ahead to unescaped tab. */
441:
442: p = strchr(*v, '\t');
443:
444: /* Scan ahead to unescaped `Ta'. */
445:
446: for (pp = *v; ; pp++) {
447: if (NULL == (pp = strstr(pp, "Ta")))
448: break;
449: if (pp > *v && ' ' != *(pp - 1))
450: continue;
451: if (' ' == *(pp + 2) || 0 == *(pp + 2))
452: break;
453: }
454:
455: /* Choose delimiter tab/Ta. */
456:
457: if (p && pp)
458: p = (p < pp ? p : pp);
459: else if ( ! p && pp)
460: p = pp;
461:
462: /* Strip delimiter's preceding whitespace. */
463:
464: if (p && p > *v) {
465: pp = p - 1;
466: while (pp > *v && ' ' == *pp)
467: pp--;
468: if (pp == *v && ' ' == *pp)
469: *pp = 0;
470: else if (' ' == *pp)
471: *(pp + 1) = 0;
472: }
473:
474: /* ...in- and proceding whitespace. */
475:
476: if (p && ('\t' != *p)) {
477: *p++ = 0;
478: *p++ = 0;
479: } else if (p)
480: *p++ = 0;
481:
482: if (p) {
483: while (' ' == *p)
484: p++;
485: if (0 != *p)
486: *(p - 1) = 0;
487: *pos += (int)(p - *v);
488: }
489:
490: if (p && 0 == *p)
1.11 kristaps 491: if ( ! mdoc_pwarn(m, line, *pos, ECOLEMPTY))
1.13 kristaps 492: return(ARGS_ERROR);
1.1 kristaps 493: if (p && 0 == *p && p > *v && ' ' == *(p - 1))
1.11 kristaps 494: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
1.13 kristaps 495: return(ARGS_ERROR);
1.1 kristaps 496:
497: if (p)
498: return(ARGS_PHRASE);
499:
500: /* Configure the eoln case, too. */
501:
502: p = strchr(*v, 0);
503: assert(p);
504:
505: if (p > *v && ' ' == *(p - 1))
1.11 kristaps 506: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
1.13 kristaps 507: return(ARGS_ERROR);
1.1 kristaps 508: *pos += (int)(p - *v);
509:
510: return(ARGS_PHRASE);
511: }
512:
513: /* Do non-tabsep look-ahead here. */
514:
515: if ( ! (ARGS_TABSEP & fl))
516: while (buf[*pos]) {
517: if (' ' == buf[*pos])
518: if ('\\' != buf[*pos - 1])
519: break;
520: (*pos)++;
521: }
522:
523: if (0 == buf[*pos])
524: return(ARGS_WORD);
525:
526: buf[(*pos)++] = 0;
527:
528: if (0 == buf[*pos])
529: return(ARGS_WORD);
530:
531: if ( ! (ARGS_TABSEP & fl))
532: while (buf[*pos] && ' ' == buf[*pos])
533: (*pos)++;
534:
535: if (buf[*pos])
536: return(ARGS_WORD);
537:
1.11 kristaps 538: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
1.1 kristaps 539: return(ARGS_ERROR);
540:
541: return(ARGS_WORD);
542: }
543:
544: /*
545: * If we're a quoted string (and quoted strings are allowed),
546: * then parse ahead to the next quote. If none's found, it's an
547: * error. After, parse to the next word.
548: */
549:
550: *v = &buf[++(*pos)];
551:
552: while (buf[*pos] && '\"' != buf[*pos])
553: (*pos)++;
554:
555: if (0 == buf[*pos]) {
1.11 kristaps 556: (void)mdoc_perr(m, line, *pos, EQUOTTERM);
1.1 kristaps 557: return(ARGS_ERROR);
558: }
559:
560: buf[(*pos)++] = 0;
561: if (0 == buf[*pos])
562: return(ARGS_QWORD);
563:
564: while (buf[*pos] && ' ' == buf[*pos])
565: (*pos)++;
566:
567: if (buf[*pos])
568: return(ARGS_QWORD);
569:
1.11 kristaps 570: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
1.1 kristaps 571: return(ARGS_ERROR);
572:
573: return(ARGS_QWORD);
574: }
575:
576:
577: static int
578: argv_a2arg(int tok, const char *argv)
579: {
580:
581: /*
582: * Parse an argument identifier from its text. XXX - this
583: * should really be table-driven to clarify the code.
584: *
585: * If you add an argument to the list, make sure that you
586: * register it here with its one or more macros!
587: */
588:
589: switch (tok) {
590: case (MDOC_An):
1.2 kristaps 591: if (0 == strcmp(argv, "split"))
1.1 kristaps 592: return(MDOC_Split);
1.2 kristaps 593: else if (0 == strcmp(argv, "nosplit"))
1.1 kristaps 594: return(MDOC_Nosplit);
595: break;
596:
597: case (MDOC_Bd):
1.2 kristaps 598: if (0 == strcmp(argv, "ragged"))
1.1 kristaps 599: return(MDOC_Ragged);
1.2 kristaps 600: else if (0 == strcmp(argv, "unfilled"))
1.1 kristaps 601: return(MDOC_Unfilled);
1.2 kristaps 602: else if (0 == strcmp(argv, "filled"))
1.1 kristaps 603: return(MDOC_Filled);
1.2 kristaps 604: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 605: return(MDOC_Literal);
1.2 kristaps 606: else if (0 == strcmp(argv, "file"))
1.1 kristaps 607: return(MDOC_File);
1.2 kristaps 608: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 609: return(MDOC_Offset);
1.2 kristaps 610: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 611: return(MDOC_Compact);
612: break;
613:
614: case (MDOC_Bf):
1.2 kristaps 615: if (0 == strcmp(argv, "emphasis"))
1.1 kristaps 616: return(MDOC_Emphasis);
1.2 kristaps 617: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 618: return(MDOC_Literal);
1.2 kristaps 619: else if (0 == strcmp(argv, "symbolic"))
1.1 kristaps 620: return(MDOC_Symbolic);
621: break;
622:
623: case (MDOC_Bk):
1.2 kristaps 624: if (0 == strcmp(argv, "words"))
1.1 kristaps 625: return(MDOC_Words);
626: break;
627:
628: case (MDOC_Bl):
1.2 kristaps 629: if (0 == strcmp(argv, "bullet"))
1.1 kristaps 630: return(MDOC_Bullet);
1.2 kristaps 631: else if (0 == strcmp(argv, "dash"))
1.1 kristaps 632: return(MDOC_Dash);
1.2 kristaps 633: else if (0 == strcmp(argv, "hyphen"))
1.1 kristaps 634: return(MDOC_Hyphen);
1.2 kristaps 635: else if (0 == strcmp(argv, "item"))
1.1 kristaps 636: return(MDOC_Item);
1.2 kristaps 637: else if (0 == strcmp(argv, "enum"))
1.1 kristaps 638: return(MDOC_Enum);
1.2 kristaps 639: else if (0 == strcmp(argv, "tag"))
1.1 kristaps 640: return(MDOC_Tag);
1.2 kristaps 641: else if (0 == strcmp(argv, "diag"))
1.1 kristaps 642: return(MDOC_Diag);
1.2 kristaps 643: else if (0 == strcmp(argv, "hang"))
1.1 kristaps 644: return(MDOC_Hang);
1.2 kristaps 645: else if (0 == strcmp(argv, "ohang"))
1.1 kristaps 646: return(MDOC_Ohang);
1.2 kristaps 647: else if (0 == strcmp(argv, "inset"))
1.1 kristaps 648: return(MDOC_Inset);
1.2 kristaps 649: else if (0 == strcmp(argv, "column"))
1.1 kristaps 650: return(MDOC_Column);
1.2 kristaps 651: else if (0 == strcmp(argv, "width"))
1.1 kristaps 652: return(MDOC_Width);
1.2 kristaps 653: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 654: return(MDOC_Offset);
1.2 kristaps 655: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 656: return(MDOC_Compact);
1.2 kristaps 657: else if (0 == strcmp(argv, "nested"))
1.1 kristaps 658: return(MDOC_Nested);
659: break;
660:
661: case (MDOC_Rv):
662: /* FALLTHROUGH */
663: case (MDOC_Ex):
1.2 kristaps 664: if (0 == strcmp(argv, "std"))
1.1 kristaps 665: return(MDOC_Std);
666: break;
667: default:
668: break;
669: }
670:
671: return(MDOC_ARG_MAX);
672: }
673:
674:
675: static int
1.11 kristaps 676: argv_multi(struct mdoc *m, int line,
1.1 kristaps 677: struct mdoc_argv *v, int *pos, char *buf)
678: {
1.8 kristaps 679: int c;
1.1 kristaps 680: char *p;
681:
682: for (v->sz = 0; ; v->sz++) {
683: if ('-' == buf[*pos])
684: break;
1.11 kristaps 685: c = args(m, line, pos, buf, ARGS_QUOTED, &p);
1.1 kristaps 686: if (ARGS_ERROR == c)
687: return(0);
688: else if (ARGS_EOLN == c)
689: break;
690:
1.2 kristaps 691: if (0 == v->sz % MULTI_STEP) {
692: v->value = realloc(v->value,
1.1 kristaps 693: (v->sz + MULTI_STEP) * sizeof(char *));
1.2 kristaps 694: if (NULL == v->value) {
1.11 kristaps 695: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 696: return(ARGV_ERROR);
697: }
698: }
1.1 kristaps 699: if (NULL == (v->value[(int)v->sz] = strdup(p)))
1.11 kristaps 700: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 701: }
702:
1.7 kristaps 703: return(1);
1.1 kristaps 704: }
705:
706:
707: static int
1.11 kristaps 708: argv_opt_single(struct mdoc *m, int line,
1.1 kristaps 709: struct mdoc_argv *v, int *pos, char *buf)
710: {
711: int c;
712: char *p;
713:
714: if ('-' == buf[*pos])
715: return(1);
716:
1.11 kristaps 717: c = args(m, line, pos, buf, ARGS_QUOTED, &p);
1.1 kristaps 718: if (ARGS_ERROR == c)
719: return(0);
720: if (ARGS_EOLN == c)
721: return(1);
722:
723: v->sz = 1;
724: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.11 kristaps 725: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 726: if (NULL == (v->value[0] = strdup(p)))
1.11 kristaps 727: return(mdoc_nerr(m, m->last, EMALLOC));
1.2 kristaps 728:
1.1 kristaps 729: return(1);
730: }
731:
732:
733: /*
734: * Parse a single, mandatory value from the stream.
735: */
736: static int
1.11 kristaps 737: argv_single(struct mdoc *m, int line,
1.1 kristaps 738: struct mdoc_argv *v, int *pos, char *buf)
739: {
740: int c, ppos;
741: char *p;
742:
743: ppos = *pos;
744:
1.11 kristaps 745: c = args(m, line, pos, buf, ARGS_QUOTED, &p);
1.1 kristaps 746: if (ARGS_ERROR == c)
747: return(0);
748: if (ARGS_EOLN == c)
1.11 kristaps 749: return(mdoc_perr(m, line, ppos, EARGVAL));
1.1 kristaps 750:
751: v->sz = 1;
752: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.11 kristaps 753: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 754: if (NULL == (v->value[0] = strdup(p)))
1.11 kristaps 755: return(mdoc_nerr(m, m->last, EMALLOC));
1.2 kristaps 756:
1.1 kristaps 757: return(1);
758: }
759:
760:
761: /*
762: * Determine rules for parsing arguments. Arguments can either accept
763: * no parameters, an optional single parameter, one parameter, or
764: * multiple parameters.
765: */
766: static int
767: argv(struct mdoc *mdoc, int line,
768: struct mdoc_argv *v, int *pos, char *buf)
769: {
770:
771: v->sz = 0;
772: v->value = NULL;
773:
774: switch (mdoc_argvflags[v->arg]) {
775: case (ARGV_SINGLE):
776: return(argv_single(mdoc, line, v, pos, buf));
777: case (ARGV_MULTI):
778: return(argv_multi(mdoc, line, v, pos, buf));
779: case (ARGV_OPT_SINGLE):
780: return(argv_opt_single(mdoc, line, v, pos, buf));
781: default:
782: /* ARGV_NONE */
783: break;
784: }
785:
786: return(1);
787: }
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