Annotation of mandoc/mdoc_argv.c, Revision 1.19
1.19 ! kristaps 1: /* $Id: mdoc_argv.c,v 1.18 2009/07/18 18:59:33 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_DELIM (1 << 1)
38: #define ARGS_TABSEP (1 << 2)
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: static int argv_a2arg(int, const char *);
48: static int args(struct mdoc *, int, int *,
49: char *, int, char **);
50: static int argv(struct mdoc *, int,
51: struct mdoc_argv *, int *, char *);
52: static int argv_single(struct mdoc *, int,
53: struct mdoc_argv *, int *, char *);
54: static int argv_opt_single(struct mdoc *, int,
55: struct mdoc_argv *, int *, char *);
56: static int argv_multi(struct mdoc *, int,
57: struct mdoc_argv *, int *, char *);
1.2 kristaps 58:
1.1 kristaps 59: /* Per-argument flags. */
60:
61: static int mdoc_argvflags[MDOC_ARG_MAX] = {
62: ARGV_NONE, /* MDOC_Split */
63: ARGV_NONE, /* MDOC_Nosplit */
64: ARGV_NONE, /* MDOC_Ragged */
65: ARGV_NONE, /* MDOC_Unfilled */
66: ARGV_NONE, /* MDOC_Literal */
67: ARGV_NONE, /* MDOC_File */
68: ARGV_SINGLE, /* MDOC_Offset */
69: ARGV_NONE, /* MDOC_Bullet */
70: ARGV_NONE, /* MDOC_Dash */
71: ARGV_NONE, /* MDOC_Hyphen */
72: ARGV_NONE, /* MDOC_Item */
73: ARGV_NONE, /* MDOC_Enum */
74: ARGV_NONE, /* MDOC_Tag */
75: ARGV_NONE, /* MDOC_Diag */
76: ARGV_NONE, /* MDOC_Hang */
77: ARGV_NONE, /* MDOC_Ohang */
78: ARGV_NONE, /* MDOC_Inset */
79: ARGV_MULTI, /* MDOC_Column */
80: ARGV_SINGLE, /* MDOC_Width */
81: ARGV_NONE, /* MDOC_Compact */
82: ARGV_OPT_SINGLE, /* MDOC_Std */
83: ARGV_NONE, /* MDOC_Filled */
84: ARGV_NONE, /* MDOC_Words */
85: ARGV_NONE, /* MDOC_Emphasis */
86: ARGV_NONE, /* MDOC_Symbolic */
87: ARGV_NONE /* MDOC_Symbolic */
88: };
89:
90: static int mdoc_argflags[MDOC_MAX] = {
1.5 kristaps 91: 0, /* Ap */
1.1 kristaps 92: 0, /* Dd */
93: 0, /* Dt */
94: 0, /* Os */
1.17 kristaps 95: 0, /* Sh */
96: 0, /* Ss */
1.1 kristaps 97: ARGS_DELIM, /* Pp */
98: ARGS_DELIM, /* D1 */
1.17 kristaps 99: ARGS_DELIM, /* Dl */
1.1 kristaps 100: 0, /* Bd */
101: 0, /* Ed */
1.17 kristaps 102: 0, /* Bl */
1.1 kristaps 103: 0, /* El */
104: 0, /* It */
105: ARGS_DELIM, /* Ad */
106: ARGS_DELIM, /* An */
1.17 kristaps 107: ARGS_DELIM, /* Ar */
108: 0, /* Cd */
1.1 kristaps 109: ARGS_DELIM, /* Cm */
110: ARGS_DELIM, /* Dv */
111: ARGS_DELIM, /* Er */
112: ARGS_DELIM, /* Ev */
113: 0, /* Ex */
1.17 kristaps 114: ARGS_DELIM, /* Fa */
1.1 kristaps 115: 0, /* Fd */
116: ARGS_DELIM, /* Fl */
1.17 kristaps 117: ARGS_DELIM, /* Fn */
118: ARGS_DELIM, /* Ft */
1.1 kristaps 119: ARGS_DELIM, /* Ic */
120: 0, /* In */
1.17 kristaps 121: ARGS_DELIM, /* Li */
122: 0, /* Nd */
1.1 kristaps 123: ARGS_DELIM, /* Nm */
124: ARGS_DELIM, /* Op */
125: 0, /* Ot */
126: ARGS_DELIM, /* Pa */
127: 0, /* Rv */
1.15 kristaps 128: ARGS_DELIM, /* St */
1.1 kristaps 129: ARGS_DELIM, /* Va */
130: ARGS_DELIM, /* Vt */
131: ARGS_DELIM, /* Xr */
1.17 kristaps 132: 0, /* %A */
133: 0, /* %B */
134: 0, /* %D */
135: 0, /* %I */
136: 0, /* %J */
137: 0, /* %N */
138: 0, /* %O */
139: 0, /* %P */
140: 0, /* %R */
141: 0, /* %T */
142: 0, /* %V */
1.1 kristaps 143: ARGS_DELIM, /* Ac */
144: 0, /* Ao */
145: ARGS_DELIM, /* Aq */
146: ARGS_DELIM, /* At */
147: ARGS_DELIM, /* Bc */
148: 0, /* Bf */
149: 0, /* Bo */
150: ARGS_DELIM, /* Bq */
151: ARGS_DELIM, /* Bsx */
152: ARGS_DELIM, /* Bx */
153: 0, /* Db */
154: ARGS_DELIM, /* Dc */
155: 0, /* Do */
156: ARGS_DELIM, /* Dq */
157: ARGS_DELIM, /* Ec */
158: 0, /* Ef */
159: ARGS_DELIM, /* Em */
160: 0, /* Eo */
161: ARGS_DELIM, /* Fx */
162: ARGS_DELIM, /* Ms */
163: ARGS_DELIM, /* No */
164: ARGS_DELIM, /* Ns */
165: ARGS_DELIM, /* Nx */
166: ARGS_DELIM, /* Ox */
167: ARGS_DELIM, /* Pc */
168: ARGS_DELIM, /* Pf */
169: 0, /* Po */
170: ARGS_DELIM, /* Pq */
171: ARGS_DELIM, /* Qc */
172: ARGS_DELIM, /* Ql */
173: 0, /* Qo */
174: ARGS_DELIM, /* Qq */
175: 0, /* Re */
176: 0, /* Rs */
177: ARGS_DELIM, /* Sc */
178: 0, /* So */
179: ARGS_DELIM, /* Sq */
180: 0, /* Sm */
181: ARGS_DELIM, /* Sx */
1.17 kristaps 182: ARGS_DELIM, /* Sy */
1.1 kristaps 183: ARGS_DELIM, /* Tn */
184: ARGS_DELIM, /* Ux */
185: ARGS_DELIM, /* Xc */
186: 0, /* Xo */
1.17 kristaps 187: 0, /* Fo */
1.1 kristaps 188: 0, /* Fc */
189: 0, /* Oo */
190: ARGS_DELIM, /* Oc */
191: 0, /* Bk */
192: 0, /* Ek */
193: 0, /* Bt */
194: 0, /* Hf */
195: 0, /* Fr */
196: 0, /* Ud */
197: 0, /* Lb */
198: ARGS_DELIM, /* Lp */
1.17 kristaps 199: ARGS_DELIM, /* Lk */
200: ARGS_DELIM, /* Mt */
1.1 kristaps 201: ARGS_DELIM, /* Brq */
202: 0, /* Bro */
203: ARGS_DELIM, /* Brc */
1.17 kristaps 204: 0, /* %C */
1.1 kristaps 205: 0, /* Es */
206: 0, /* En */
207: 0, /* Dx */
1.17 kristaps 208: 0, /* %Q */
1.14 kristaps 209: 0, /* br */
210: 0, /* sp */
1.1 kristaps 211: };
212:
213:
214: /*
215: * Parse an argument from line text. This comes in the form of -key
216: * [value0...], which may either have a single mandatory value, at least
217: * one mandatory value, an optional single value, or no value.
218: */
219: int
1.11 kristaps 220: mdoc_argv(struct mdoc *m, int line, int tok,
1.1 kristaps 221: struct mdoc_arg **v, int *pos, char *buf)
222: {
223: char *p, sv;
224: struct mdoc_argv tmp;
225: struct mdoc_arg *arg;
226:
227: if (0 == buf[*pos])
228: return(ARGV_EOLN);
229:
230: assert(' ' != buf[*pos]);
231:
232: /* Parse through to the first unescaped space. */
233:
234: p = &buf[++(*pos)];
235:
236: assert(*pos > 0);
237:
238: /* LINTED */
239: while (buf[*pos]) {
240: if (' ' == buf[*pos])
241: if ('\\' != buf[*pos - 1])
242: break;
243: (*pos)++;
244: }
245:
246: /* XXX - save zeroed byte, if not an argument. */
247:
248: sv = 0;
249: if (buf[*pos]) {
250: sv = buf[*pos];
251: buf[(*pos)++] = 0;
252: }
253:
254: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
255: tmp.line = line;
256: tmp.pos = *pos;
257:
258: /* See if our token accepts the argument. */
259:
260: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
261: /* XXX - restore saved zeroed byte. */
262: if (sv)
263: buf[*pos - 1] = sv;
264: return(ARGV_WORD);
265: }
266:
267: while (buf[*pos] && ' ' == buf[*pos])
268: (*pos)++;
269:
1.11 kristaps 270: if ( ! argv(m, line, &tmp, pos, buf))
1.1 kristaps 271: return(ARGV_ERROR);
272:
273: if (NULL == (arg = *v)) {
1.2 kristaps 274: *v = calloc(1, sizeof(struct mdoc_arg));
275: if (NULL == *v) {
1.11 kristaps 276: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 277: return(ARGV_ERROR);
278: }
1.1 kristaps 279: arg = *v;
280: }
281:
282: arg->argc++;
1.2 kristaps 283: arg->argv = realloc(arg->argv, arg->argc *
1.1 kristaps 284: sizeof(struct mdoc_argv));
285:
1.2 kristaps 286: if (NULL == arg->argv) {
1.11 kristaps 287: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 288: return(ARGV_ERROR);
289: }
290:
1.1 kristaps 291: (void)memcpy(&arg->argv[(int)arg->argc - 1],
292: &tmp, sizeof(struct mdoc_argv));
293:
294: return(ARGV_ARG);
295: }
296:
297:
298: void
299: mdoc_argv_free(struct mdoc_arg *p)
300: {
301: int i, j;
302:
303: if (NULL == p)
304: return;
305:
306: if (p->refcnt) {
307: --(p->refcnt);
308: if (p->refcnt)
309: return;
310: }
311: assert(p->argc);
312:
313: /* LINTED */
314: for (i = 0; i < (int)p->argc; i++) {
315: if (0 == p->argv[i].sz)
316: continue;
317: /* LINTED */
318: for (j = 0; j < (int)p->argv[i].sz; j++)
319: free(p->argv[i].value[j]);
320:
321: free(p->argv[i].value);
322: }
323:
324: free(p->argv);
325: free(p);
326: }
327:
328:
329: int
1.19 ! kristaps 330: mdoc_zargs(struct mdoc *m, int line, int *pos, char *buf, char **v)
! 331: {
! 332:
! 333: return(args(m, line, pos, buf, 0, v));
! 334: }
! 335:
! 336:
! 337: int
1.11 kristaps 338: mdoc_args(struct mdoc *m, int line,
1.1 kristaps 339: int *pos, char *buf, int tok, char **v)
340: {
341: int fl, c, i;
342: struct mdoc_node *n;
343:
344: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
345:
1.17 kristaps 346: if (MDOC_It != tok)
347: return(args(m, line, pos, buf, fl, v));
348:
1.1 kristaps 349: /*
1.17 kristaps 350: * The `It' macro is a special case, as it acquires parameters from its
351: * parent `Bl' context, specifically, we're concerned with -column.
1.1 kristaps 352: */
353:
1.17 kristaps 354: for (n = m->last; n; n = n->parent)
355: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
356: break;
1.1 kristaps 357:
1.17 kristaps 358: assert(n);
359: c = (int)(n->args ? n->args->argc : 0);
360: assert(c > 0);
1.1 kristaps 361:
1.17 kristaps 362: /* LINTED */
363: for (i = 0; i < c; i++) {
364: if (MDOC_Column != n->args->argv[i].arg)
365: continue;
366: fl |= ARGS_TABSEP;
367: fl &= ~ARGS_DELIM;
1.1 kristaps 368: break;
369: }
370:
1.11 kristaps 371: return(args(m, line, pos, buf, fl, v));
1.1 kristaps 372: }
373:
374:
375: static int
1.13 kristaps 376: args(struct mdoc *m, int line, int *pos,
377: char *buf, int fl, char **v)
1.1 kristaps 378: {
379: int i;
380: char *p, *pp;
381:
1.17 kristaps 382: assert(*pos);
383: assert(' ' != buf[*pos]);
1.1 kristaps 384:
385: if (0 == buf[*pos])
386: return(ARGS_EOLN);
387:
388: /*
389: * If the first character is a delimiter and we're to look for
390: * delimited strings, then pass down the buffer seeing if it
391: * follows the pattern of [[::delim::][ ]+]+.
392: */
393:
394: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
395: for (i = *pos; buf[i]; ) {
396: if ( ! mdoc_iscdelim(buf[i]))
397: break;
398: i++;
399: if (0 == buf[i] || ' ' != buf[i])
400: break;
401: i++;
402: while (buf[i] && ' ' == buf[i])
403: i++;
404: }
1.17 kristaps 405:
406: /* FIXME: warn about trailing whitespace. */
407:
1.1 kristaps 408: if (0 == buf[i]) {
409: *v = &buf[*pos];
410: return(ARGS_PUNCT);
411: }
412: }
413:
1.17 kristaps 414: *v = &buf[*pos];
1.1 kristaps 415:
1.17 kristaps 416: /*
417: * First handle TABSEP items, restricted to `Bl -column'. This
418: * ignores conventional token parsing and instead uses tabs or
419: * `Ta' macros to separate phrases. Phrases are parsed again
420: * for arguments at a later phase.
421: */
1.1 kristaps 422:
1.17 kristaps 423: if (ARGS_TABSEP & fl) {
424: /* Scan ahead to unescaped tab. */
425: p = strchr(*v, '\t');
426:
427: /* Scan ahead to unescaped `Ta'. */
428: for (pp = *v; ; pp++) {
429: if (NULL == (pp = strstr(pp, "Ta")))
430: break;
431: if (pp > *v && ' ' != *(pp - 1))
432: continue;
433: if (' ' == *(pp + 2) || 0 == *(pp + 2))
434: break;
435: }
436:
437: /* Choose delimiter tab/Ta. */
438: if (p && pp)
439: p = (p < pp ? p : pp);
440: else if ( ! p && pp)
441: p = pp;
442:
443: /* Strip delimiter's preceding whitespace. */
444: /* FIXME: escaped whitespace? */
445: if (p && p > *v) {
446: pp = p - 1;
447: while (pp > *v && ' ' == *pp)
448: pp--;
449: if (pp == *v && ' ' == *pp)
450: *pp = 0;
451: else if (' ' == *pp)
452: *(pp + 1) = 0;
453: }
454:
455: /* ...in- and proceding whitespace. */
456: if (p && ('\t' != *p)) {
457: *p++ = 0;
458: *p++ = 0;
459: } else if (p)
460: *p++ = 0;
461:
462: if (p) {
463: while (' ' == *p)
464: p++;
465: if (0 != *p)
466: *(p - 1) = 0;
467: *pos += (int)(p - *v);
468: }
469:
470: /* Some warnings, if applicable. */
471: if (p && 0 == *p)
472: if ( ! mdoc_pwarn(m, line, *pos, ECOLEMPTY))
473: return(ARGS_ERROR);
474: if (p && 0 == *p && p > *v && ' ' == *(p - 1))
475: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
476: return(ARGS_ERROR);
477:
478: /* Non-eoln case returns now. */
479: if (p)
480: return(ARGS_PHRASE);
1.1 kristaps 481:
1.17 kristaps 482: /* Configure the eoln case, too. */
483: p = strchr(*v, 0);
484: assert(p);
485:
486: if (p > *v && ' ' == *(p - 1))
487: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
488: return(ARGS_ERROR);
489: *pos += (int)(p - *v);
1.1 kristaps 490:
1.17 kristaps 491: return(ARGS_PHRASE);
492: }
1.1 kristaps 493:
1.17 kristaps 494: /*
495: * Process a quoted literal. A quote begins with a double-quote
496: * and ends with a double-quote NOT preceded by a double-quote.
497: * Whitespace is NOT involved in literal termination.
498: */
1.1 kristaps 499:
1.17 kristaps 500: if ('\"' == buf[*pos]) {
501: *v = &buf[++(*pos)];
1.1 kristaps 502:
1.17 kristaps 503: for ( ; buf[*pos]; (*pos)++) {
504: if ('\"' != buf[*pos])
505: continue;
506: if ('\"' != buf[*pos + 1])
507: break;
508: (*pos)++;
509: }
1.1 kristaps 510:
1.17 kristaps 511: if (0 == buf[*pos]) {
1.18 kristaps 512: if ( ! mdoc_pwarn(m, line, *pos, EQUOTTERM))
513: return(ARGS_ERROR);
514: return(ARGS_QWORD);
1.17 kristaps 515: }
1.1 kristaps 516:
517: buf[(*pos)++] = 0;
518:
519: if (0 == buf[*pos])
1.17 kristaps 520: return(ARGS_QWORD);
1.1 kristaps 521:
1.17 kristaps 522: while (' ' == buf[*pos])
523: (*pos)++;
1.1 kristaps 524:
1.17 kristaps 525: if (0 == buf[*pos])
526: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
527: return(ARGS_ERROR);
1.1 kristaps 528:
1.17 kristaps 529: return(ARGS_QWORD);
1.1 kristaps 530: }
531:
1.17 kristaps 532: /*
533: * A non-quoted term progresses until either the end of line or
534: * a non-escaped whitespace.
1.1 kristaps 535: */
536:
1.17 kristaps 537: for ( ; buf[*pos]; (*pos)++)
538: if (' ' == buf[*pos] && '\\' != buf[*pos - 1])
539: break;
1.1 kristaps 540:
1.17 kristaps 541: if (0 == buf[*pos])
542: return(ARGS_WORD);
1.1 kristaps 543:
544: buf[(*pos)++] = 0;
545:
1.17 kristaps 546: while (' ' == buf[*pos])
1.1 kristaps 547: (*pos)++;
548:
1.17 kristaps 549: if (0 == buf[*pos])
550: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
551: return(ARGS_ERROR);
1.1 kristaps 552:
1.17 kristaps 553: return(ARGS_WORD);
1.1 kristaps 554: }
555:
556:
557: static int
558: argv_a2arg(int tok, const char *argv)
559: {
560:
561: /*
562: * Parse an argument identifier from its text. XXX - this
563: * should really be table-driven to clarify the code.
564: *
565: * If you add an argument to the list, make sure that you
566: * register it here with its one or more macros!
567: */
568:
569: switch (tok) {
570: case (MDOC_An):
1.2 kristaps 571: if (0 == strcmp(argv, "split"))
1.1 kristaps 572: return(MDOC_Split);
1.2 kristaps 573: else if (0 == strcmp(argv, "nosplit"))
1.1 kristaps 574: return(MDOC_Nosplit);
575: break;
576:
577: case (MDOC_Bd):
1.2 kristaps 578: if (0 == strcmp(argv, "ragged"))
1.1 kristaps 579: return(MDOC_Ragged);
1.2 kristaps 580: else if (0 == strcmp(argv, "unfilled"))
1.1 kristaps 581: return(MDOC_Unfilled);
1.2 kristaps 582: else if (0 == strcmp(argv, "filled"))
1.1 kristaps 583: return(MDOC_Filled);
1.2 kristaps 584: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 585: return(MDOC_Literal);
1.2 kristaps 586: else if (0 == strcmp(argv, "file"))
1.1 kristaps 587: return(MDOC_File);
1.2 kristaps 588: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 589: return(MDOC_Offset);
1.2 kristaps 590: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 591: return(MDOC_Compact);
592: break;
593:
594: case (MDOC_Bf):
1.2 kristaps 595: if (0 == strcmp(argv, "emphasis"))
1.1 kristaps 596: return(MDOC_Emphasis);
1.2 kristaps 597: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 598: return(MDOC_Literal);
1.2 kristaps 599: else if (0 == strcmp(argv, "symbolic"))
1.1 kristaps 600: return(MDOC_Symbolic);
601: break;
602:
603: case (MDOC_Bk):
1.2 kristaps 604: if (0 == strcmp(argv, "words"))
1.1 kristaps 605: return(MDOC_Words);
606: break;
607:
608: case (MDOC_Bl):
1.2 kristaps 609: if (0 == strcmp(argv, "bullet"))
1.1 kristaps 610: return(MDOC_Bullet);
1.2 kristaps 611: else if (0 == strcmp(argv, "dash"))
1.1 kristaps 612: return(MDOC_Dash);
1.2 kristaps 613: else if (0 == strcmp(argv, "hyphen"))
1.1 kristaps 614: return(MDOC_Hyphen);
1.2 kristaps 615: else if (0 == strcmp(argv, "item"))
1.1 kristaps 616: return(MDOC_Item);
1.2 kristaps 617: else if (0 == strcmp(argv, "enum"))
1.1 kristaps 618: return(MDOC_Enum);
1.2 kristaps 619: else if (0 == strcmp(argv, "tag"))
1.1 kristaps 620: return(MDOC_Tag);
1.2 kristaps 621: else if (0 == strcmp(argv, "diag"))
1.1 kristaps 622: return(MDOC_Diag);
1.2 kristaps 623: else if (0 == strcmp(argv, "hang"))
1.1 kristaps 624: return(MDOC_Hang);
1.2 kristaps 625: else if (0 == strcmp(argv, "ohang"))
1.1 kristaps 626: return(MDOC_Ohang);
1.2 kristaps 627: else if (0 == strcmp(argv, "inset"))
1.1 kristaps 628: return(MDOC_Inset);
1.2 kristaps 629: else if (0 == strcmp(argv, "column"))
1.1 kristaps 630: return(MDOC_Column);
1.2 kristaps 631: else if (0 == strcmp(argv, "width"))
1.1 kristaps 632: return(MDOC_Width);
1.2 kristaps 633: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 634: return(MDOC_Offset);
1.2 kristaps 635: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 636: return(MDOC_Compact);
1.2 kristaps 637: else if (0 == strcmp(argv, "nested"))
1.1 kristaps 638: return(MDOC_Nested);
639: break;
640:
641: case (MDOC_Rv):
642: /* FALLTHROUGH */
643: case (MDOC_Ex):
1.2 kristaps 644: if (0 == strcmp(argv, "std"))
1.1 kristaps 645: return(MDOC_Std);
646: break;
647: default:
648: break;
649: }
650:
651: return(MDOC_ARG_MAX);
652: }
653:
654:
655: static int
1.11 kristaps 656: argv_multi(struct mdoc *m, int line,
1.1 kristaps 657: struct mdoc_argv *v, int *pos, char *buf)
658: {
1.8 kristaps 659: int c;
1.1 kristaps 660: char *p;
661:
662: for (v->sz = 0; ; v->sz++) {
663: if ('-' == buf[*pos])
664: break;
1.17 kristaps 665: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 666: if (ARGS_ERROR == c)
667: return(0);
668: else if (ARGS_EOLN == c)
669: break;
670:
1.2 kristaps 671: if (0 == v->sz % MULTI_STEP) {
672: v->value = realloc(v->value,
1.1 kristaps 673: (v->sz + MULTI_STEP) * sizeof(char *));
1.2 kristaps 674: if (NULL == v->value) {
1.11 kristaps 675: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 676: return(ARGV_ERROR);
677: }
678: }
1.1 kristaps 679: if (NULL == (v->value[(int)v->sz] = strdup(p)))
1.11 kristaps 680: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 681: }
682:
1.7 kristaps 683: return(1);
1.1 kristaps 684: }
685:
686:
687: static int
1.11 kristaps 688: argv_opt_single(struct mdoc *m, int line,
1.1 kristaps 689: struct mdoc_argv *v, int *pos, char *buf)
690: {
691: int c;
692: char *p;
693:
694: if ('-' == buf[*pos])
695: return(1);
696:
1.17 kristaps 697: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 698: if (ARGS_ERROR == c)
699: return(0);
700: if (ARGS_EOLN == c)
701: return(1);
702:
703: v->sz = 1;
704: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.11 kristaps 705: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 706: if (NULL == (v->value[0] = strdup(p)))
1.11 kristaps 707: return(mdoc_nerr(m, m->last, EMALLOC));
1.2 kristaps 708:
1.1 kristaps 709: return(1);
710: }
711:
712:
713: /*
714: * Parse a single, mandatory value from the stream.
715: */
716: static int
1.11 kristaps 717: argv_single(struct mdoc *m, int line,
1.1 kristaps 718: struct mdoc_argv *v, int *pos, char *buf)
719: {
720: int c, ppos;
721: char *p;
722:
723: ppos = *pos;
724:
1.17 kristaps 725: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 726: if (ARGS_ERROR == c)
727: return(0);
728: if (ARGS_EOLN == c)
1.11 kristaps 729: return(mdoc_perr(m, line, ppos, EARGVAL));
1.1 kristaps 730:
731: v->sz = 1;
732: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.11 kristaps 733: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 734: if (NULL == (v->value[0] = strdup(p)))
1.11 kristaps 735: return(mdoc_nerr(m, m->last, EMALLOC));
1.2 kristaps 736:
1.1 kristaps 737: return(1);
738: }
739:
740:
741: /*
742: * Determine rules for parsing arguments. Arguments can either accept
743: * no parameters, an optional single parameter, one parameter, or
744: * multiple parameters.
745: */
746: static int
747: argv(struct mdoc *mdoc, int line,
748: struct mdoc_argv *v, int *pos, char *buf)
749: {
750:
751: v->sz = 0;
752: v->value = NULL;
753:
754: switch (mdoc_argvflags[v->arg]) {
755: case (ARGV_SINGLE):
756: return(argv_single(mdoc, line, v, pos, buf));
757: case (ARGV_MULTI):
758: return(argv_multi(mdoc, line, v, pos, buf));
759: case (ARGV_OPT_SINGLE):
760: return(argv_opt_single(mdoc, line, v, pos, buf));
761: default:
762: /* ARGV_NONE */
763: break;
764: }
765:
766: return(1);
767: }
CVSweb