Annotation of mandoc/mdoc_argv.c, Revision 1.14
1.14 ! kristaps 1: /* $Id: mdoc_argv.c,v 1.13 2009/07/15 15:26:19 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: #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 *);
1.2 kristaps 60:
1.1 kristaps 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] = {
1.5 kristaps 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 */
1.7 kristaps 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 */
1.14 ! kristaps 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
1.11 kristaps 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;
1.11 kristaps 271: if ( ! mdoc_pwarn(m, line, i, EARGVPARM))
1.1 kristaps 272: return(ARGV_ERROR);
273: return(ARGV_WORD);
274: }
275:
276: while (buf[*pos] && ' ' == buf[*pos])
277: (*pos)++;
278:
1.11 kristaps 279: if ( ! argv(m, line, &tmp, pos, buf))
1.1 kristaps 280: return(ARGV_ERROR);
281:
282: if (NULL == (arg = *v)) {
1.2 kristaps 283: *v = calloc(1, sizeof(struct mdoc_arg));
284: if (NULL == *v) {
1.11 kristaps 285: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 286: return(ARGV_ERROR);
287: }
1.1 kristaps 288: arg = *v;
289: }
290:
291: arg->argc++;
1.2 kristaps 292: arg->argv = realloc(arg->argv, arg->argc *
1.1 kristaps 293: sizeof(struct mdoc_argv));
294:
1.2 kristaps 295: if (NULL == arg->argv) {
1.11 kristaps 296: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 297: return(ARGV_ERROR);
298: }
299:
1.1 kristaps 300: (void)memcpy(&arg->argv[(int)arg->argc - 1],
301: &tmp, sizeof(struct mdoc_argv));
302:
303: return(ARGV_ARG);
304: }
305:
306:
307: void
308: mdoc_argv_free(struct mdoc_arg *p)
309: {
310: int i, j;
311:
312: if (NULL == p)
313: return;
314:
315: if (p->refcnt) {
316: --(p->refcnt);
317: if (p->refcnt)
318: return;
319: }
320: assert(p->argc);
321:
322: /* LINTED */
323: for (i = 0; i < (int)p->argc; i++) {
324: if (0 == p->argv[i].sz)
325: continue;
326: /* LINTED */
327: for (j = 0; j < (int)p->argv[i].sz; j++)
328: free(p->argv[i].value[j]);
329:
330: free(p->argv[i].value);
331: }
332:
333: free(p->argv);
334: free(p);
335: }
336:
337:
338: int
1.11 kristaps 339: mdoc_args(struct mdoc *m, int line,
1.1 kristaps 340: int *pos, char *buf, int tok, char **v)
341: {
342: int fl, c, i;
343: struct mdoc_node *n;
344:
345: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
346:
347: /*
348: * Override per-macro argument flags with context-specific ones.
349: * As of now, this is only valid for `It' depending on its list
350: * context.
351: */
352:
353: switch (tok) {
354: case (MDOC_It):
1.11 kristaps 355: for (n = m->last; n; n = n->parent)
1.1 kristaps 356: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
357: break;
358:
359: assert(n);
360: c = (int)(n->args ? n->args->argc : 0);
361: assert(c > 0);
362:
363: /*
364: * Using `Bl -column' adds ARGS_TABSEP to the arguments
365: * and invalidates ARGS_DELIM. Using `Bl -diag' allows
366: * for quoted arguments.
367: */
368:
369: /* LINTED */
370: for (i = 0; i < c; i++) {
371: switch (n->args->argv[i].arg) {
372: case (MDOC_Column):
373: fl |= ARGS_TABSEP;
374: fl &= ~ARGS_DELIM;
375: i = c;
376: break;
377: case (MDOC_Diag):
378: fl |= ARGS_QUOTED;
379: i = c;
380: break;
381: default:
382: break;
383: }
384: }
385: break;
386: default:
387: break;
388: }
389:
1.11 kristaps 390: return(args(m, line, pos, buf, fl, v));
1.1 kristaps 391: }
392:
393:
394: static int
1.13 kristaps 395: args(struct mdoc *m, int line, int *pos,
396: char *buf, int fl, char **v)
1.1 kristaps 397: {
398: int i;
399: char *p, *pp;
400:
401: assert(*pos > 0);
402:
403: if (0 == buf[*pos])
404: return(ARGS_EOLN);
405:
406: if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
1.11 kristaps 407: if ( ! mdoc_pwarn(m, line, *pos, EQUOTPARM))
1.1 kristaps 408: return(ARGS_ERROR);
409:
410: if ( ! (fl & ARGS_ARGVLIKE) && '-' == buf[*pos])
1.11 kristaps 411: if ( ! mdoc_pwarn(m, line, *pos, EARGVPARM))
1.1 kristaps 412: return(ARGS_ERROR);
413:
414: /*
415: * If the first character is a delimiter and we're to look for
416: * delimited strings, then pass down the buffer seeing if it
417: * follows the pattern of [[::delim::][ ]+]+.
418: */
419:
420: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
421: for (i = *pos; buf[i]; ) {
422: if ( ! mdoc_iscdelim(buf[i]))
423: break;
424: i++;
425: /* There must be at least one space... */
426: if (0 == buf[i] || ' ' != buf[i])
427: break;
428: i++;
429: while (buf[i] && ' ' == buf[i])
430: i++;
431: }
432: if (0 == buf[i]) {
433: *v = &buf[*pos];
434: return(ARGS_PUNCT);
435: }
436: }
437:
438: /* First parse non-quoted strings. */
439:
440: if ('\"' != buf[*pos] || ! (ARGS_QUOTED & fl)) {
441: *v = &buf[*pos];
442:
443: /*
444: * Thar be dragons here! If we're tab-separated, search
445: * ahead for either a tab or the `Ta' macro.
446: * If a `Ta' is detected, it must be space-buffered before and
447: * after. If either of these hold true, then prune out the
448: * extra spaces and call it an argument.
449: */
450:
451: if (ARGS_TABSEP & fl) {
452: /* Scan ahead to unescaped tab. */
453:
454: p = strchr(*v, '\t');
455:
456: /* Scan ahead to unescaped `Ta'. */
457:
458: for (pp = *v; ; pp++) {
459: if (NULL == (pp = strstr(pp, "Ta")))
460: break;
461: if (pp > *v && ' ' != *(pp - 1))
462: continue;
463: if (' ' == *(pp + 2) || 0 == *(pp + 2))
464: break;
465: }
466:
467: /* Choose delimiter tab/Ta. */
468:
469: if (p && pp)
470: p = (p < pp ? p : pp);
471: else if ( ! p && pp)
472: p = pp;
473:
474: /* Strip delimiter's preceding whitespace. */
475:
476: if (p && p > *v) {
477: pp = p - 1;
478: while (pp > *v && ' ' == *pp)
479: pp--;
480: if (pp == *v && ' ' == *pp)
481: *pp = 0;
482: else if (' ' == *pp)
483: *(pp + 1) = 0;
484: }
485:
486: /* ...in- and proceding whitespace. */
487:
488: if (p && ('\t' != *p)) {
489: *p++ = 0;
490: *p++ = 0;
491: } else if (p)
492: *p++ = 0;
493:
494: if (p) {
495: while (' ' == *p)
496: p++;
497: if (0 != *p)
498: *(p - 1) = 0;
499: *pos += (int)(p - *v);
500: }
501:
502: if (p && 0 == *p)
1.11 kristaps 503: if ( ! mdoc_pwarn(m, line, *pos, ECOLEMPTY))
1.13 kristaps 504: return(ARGS_ERROR);
1.1 kristaps 505: if (p && 0 == *p && 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:
509: if (p)
510: return(ARGS_PHRASE);
511:
512: /* Configure the eoln case, too. */
513:
514: p = strchr(*v, 0);
515: assert(p);
516:
517: if (p > *v && ' ' == *(p - 1))
1.11 kristaps 518: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
1.13 kristaps 519: return(ARGS_ERROR);
1.1 kristaps 520: *pos += (int)(p - *v);
521:
522: return(ARGS_PHRASE);
523: }
524:
525: /* Do non-tabsep look-ahead here. */
526:
527: if ( ! (ARGS_TABSEP & fl))
528: while (buf[*pos]) {
529: if (' ' == buf[*pos])
530: if ('\\' != buf[*pos - 1])
531: break;
532: (*pos)++;
533: }
534:
535: if (0 == buf[*pos])
536: return(ARGS_WORD);
537:
538: buf[(*pos)++] = 0;
539:
540: if (0 == buf[*pos])
541: return(ARGS_WORD);
542:
543: if ( ! (ARGS_TABSEP & fl))
544: while (buf[*pos] && ' ' == buf[*pos])
545: (*pos)++;
546:
547: if (buf[*pos])
548: return(ARGS_WORD);
549:
1.11 kristaps 550: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
1.1 kristaps 551: return(ARGS_ERROR);
552:
553: return(ARGS_WORD);
554: }
555:
556: /*
557: * If we're a quoted string (and quoted strings are allowed),
558: * then parse ahead to the next quote. If none's found, it's an
559: * error. After, parse to the next word.
560: */
561:
562: *v = &buf[++(*pos)];
563:
564: while (buf[*pos] && '\"' != buf[*pos])
565: (*pos)++;
566:
567: if (0 == buf[*pos]) {
1.11 kristaps 568: (void)mdoc_perr(m, line, *pos, EQUOTTERM);
1.1 kristaps 569: return(ARGS_ERROR);
570: }
571:
572: buf[(*pos)++] = 0;
573: if (0 == buf[*pos])
574: return(ARGS_QWORD);
575:
576: while (buf[*pos] && ' ' == buf[*pos])
577: (*pos)++;
578:
579: if (buf[*pos])
580: return(ARGS_QWORD);
581:
1.11 kristaps 582: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
1.1 kristaps 583: return(ARGS_ERROR);
584:
585: return(ARGS_QWORD);
586: }
587:
588:
589: static int
590: argv_a2arg(int tok, const char *argv)
591: {
592:
593: /*
594: * Parse an argument identifier from its text. XXX - this
595: * should really be table-driven to clarify the code.
596: *
597: * If you add an argument to the list, make sure that you
598: * register it here with its one or more macros!
599: */
600:
601: switch (tok) {
602: case (MDOC_An):
1.2 kristaps 603: if (0 == strcmp(argv, "split"))
1.1 kristaps 604: return(MDOC_Split);
1.2 kristaps 605: else if (0 == strcmp(argv, "nosplit"))
1.1 kristaps 606: return(MDOC_Nosplit);
607: break;
608:
609: case (MDOC_Bd):
1.2 kristaps 610: if (0 == strcmp(argv, "ragged"))
1.1 kristaps 611: return(MDOC_Ragged);
1.2 kristaps 612: else if (0 == strcmp(argv, "unfilled"))
1.1 kristaps 613: return(MDOC_Unfilled);
1.2 kristaps 614: else if (0 == strcmp(argv, "filled"))
1.1 kristaps 615: return(MDOC_Filled);
1.2 kristaps 616: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 617: return(MDOC_Literal);
1.2 kristaps 618: else if (0 == strcmp(argv, "file"))
1.1 kristaps 619: return(MDOC_File);
1.2 kristaps 620: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 621: return(MDOC_Offset);
1.2 kristaps 622: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 623: return(MDOC_Compact);
624: break;
625:
626: case (MDOC_Bf):
1.2 kristaps 627: if (0 == strcmp(argv, "emphasis"))
1.1 kristaps 628: return(MDOC_Emphasis);
1.2 kristaps 629: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 630: return(MDOC_Literal);
1.2 kristaps 631: else if (0 == strcmp(argv, "symbolic"))
1.1 kristaps 632: return(MDOC_Symbolic);
633: break;
634:
635: case (MDOC_Bk):
1.2 kristaps 636: if (0 == strcmp(argv, "words"))
1.1 kristaps 637: return(MDOC_Words);
638: break;
639:
640: case (MDOC_Bl):
1.2 kristaps 641: if (0 == strcmp(argv, "bullet"))
1.1 kristaps 642: return(MDOC_Bullet);
1.2 kristaps 643: else if (0 == strcmp(argv, "dash"))
1.1 kristaps 644: return(MDOC_Dash);
1.2 kristaps 645: else if (0 == strcmp(argv, "hyphen"))
1.1 kristaps 646: return(MDOC_Hyphen);
1.2 kristaps 647: else if (0 == strcmp(argv, "item"))
1.1 kristaps 648: return(MDOC_Item);
1.2 kristaps 649: else if (0 == strcmp(argv, "enum"))
1.1 kristaps 650: return(MDOC_Enum);
1.2 kristaps 651: else if (0 == strcmp(argv, "tag"))
1.1 kristaps 652: return(MDOC_Tag);
1.2 kristaps 653: else if (0 == strcmp(argv, "diag"))
1.1 kristaps 654: return(MDOC_Diag);
1.2 kristaps 655: else if (0 == strcmp(argv, "hang"))
1.1 kristaps 656: return(MDOC_Hang);
1.2 kristaps 657: else if (0 == strcmp(argv, "ohang"))
1.1 kristaps 658: return(MDOC_Ohang);
1.2 kristaps 659: else if (0 == strcmp(argv, "inset"))
1.1 kristaps 660: return(MDOC_Inset);
1.2 kristaps 661: else if (0 == strcmp(argv, "column"))
1.1 kristaps 662: return(MDOC_Column);
1.2 kristaps 663: else if (0 == strcmp(argv, "width"))
1.1 kristaps 664: return(MDOC_Width);
1.2 kristaps 665: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 666: return(MDOC_Offset);
1.2 kristaps 667: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 668: return(MDOC_Compact);
1.2 kristaps 669: else if (0 == strcmp(argv, "nested"))
1.1 kristaps 670: return(MDOC_Nested);
671: break;
672:
673: case (MDOC_Rv):
674: /* FALLTHROUGH */
675: case (MDOC_Ex):
1.2 kristaps 676: if (0 == strcmp(argv, "std"))
1.1 kristaps 677: return(MDOC_Std);
678: break;
679: default:
680: break;
681: }
682:
683: return(MDOC_ARG_MAX);
684: }
685:
686:
687: static int
1.11 kristaps 688: argv_multi(struct mdoc *m, int line,
1.1 kristaps 689: struct mdoc_argv *v, int *pos, char *buf)
690: {
1.8 kristaps 691: int c;
1.1 kristaps 692: char *p;
693:
694: for (v->sz = 0; ; v->sz++) {
695: if ('-' == buf[*pos])
696: break;
1.11 kristaps 697: c = args(m, line, pos, buf, ARGS_QUOTED, &p);
1.1 kristaps 698: if (ARGS_ERROR == c)
699: return(0);
700: else if (ARGS_EOLN == c)
701: break;
702:
1.2 kristaps 703: if (0 == v->sz % MULTI_STEP) {
704: v->value = realloc(v->value,
1.1 kristaps 705: (v->sz + MULTI_STEP) * sizeof(char *));
1.2 kristaps 706: if (NULL == v->value) {
1.11 kristaps 707: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 708: return(ARGV_ERROR);
709: }
710: }
1.1 kristaps 711: if (NULL == (v->value[(int)v->sz] = strdup(p)))
1.11 kristaps 712: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 713: }
714:
1.7 kristaps 715: return(1);
1.1 kristaps 716: }
717:
718:
719: static int
1.11 kristaps 720: argv_opt_single(struct mdoc *m, int line,
1.1 kristaps 721: struct mdoc_argv *v, int *pos, char *buf)
722: {
723: int c;
724: char *p;
725:
726: if ('-' == buf[*pos])
727: return(1);
728:
1.11 kristaps 729: c = args(m, line, pos, buf, ARGS_QUOTED, &p);
1.1 kristaps 730: if (ARGS_ERROR == c)
731: return(0);
732: if (ARGS_EOLN == c)
733: return(1);
734:
735: v->sz = 1;
736: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.11 kristaps 737: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 738: if (NULL == (v->value[0] = strdup(p)))
1.11 kristaps 739: return(mdoc_nerr(m, m->last, EMALLOC));
1.2 kristaps 740:
1.1 kristaps 741: return(1);
742: }
743:
744:
745: /*
746: * Parse a single, mandatory value from the stream.
747: */
748: static int
1.11 kristaps 749: argv_single(struct mdoc *m, int line,
1.1 kristaps 750: struct mdoc_argv *v, int *pos, char *buf)
751: {
752: int c, ppos;
753: char *p;
754:
755: ppos = *pos;
756:
1.11 kristaps 757: c = args(m, line, pos, buf, ARGS_QUOTED, &p);
1.1 kristaps 758: if (ARGS_ERROR == c)
759: return(0);
760: if (ARGS_EOLN == c)
1.11 kristaps 761: return(mdoc_perr(m, line, ppos, EARGVAL));
1.1 kristaps 762:
763: v->sz = 1;
764: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.11 kristaps 765: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 766: if (NULL == (v->value[0] = strdup(p)))
1.11 kristaps 767: return(mdoc_nerr(m, m->last, EMALLOC));
1.2 kristaps 768:
1.1 kristaps 769: return(1);
770: }
771:
772:
773: /*
774: * Determine rules for parsing arguments. Arguments can either accept
775: * no parameters, an optional single parameter, one parameter, or
776: * multiple parameters.
777: */
778: static int
779: argv(struct mdoc *mdoc, int line,
780: struct mdoc_argv *v, int *pos, char *buf)
781: {
782:
783: v->sz = 0;
784: v->value = NULL;
785:
786: switch (mdoc_argvflags[v->arg]) {
787: case (ARGV_SINGLE):
788: return(argv_single(mdoc, line, v, pos, buf));
789: case (ARGV_MULTI):
790: return(argv_multi(mdoc, line, v, pos, buf));
791: case (ARGV_OPT_SINGLE):
792: return(argv_opt_single(mdoc, line, v, pos, buf));
793: default:
794: /* ARGV_NONE */
795: break;
796: }
797:
798: return(1);
799: }
CVSweb