Annotation of mandoc/mdoc_argv.c, Revision 1.26
1.26 ! kristaps 1: /* $Id: mdoc_argv.c,v 1.25 2009/08/20 13:22:48 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 ARGV_NONE (1 << 0)
36: #define ARGV_SINGLE (1 << 1)
37: #define ARGV_MULTI (1 << 2)
38: #define ARGV_OPT_SINGLE (1 << 3)
39:
40: #define MULTI_STEP 5
41:
42: static int argv_a2arg(int, const char *);
43: static int args(struct mdoc *, int, int *,
44: char *, int, char **);
45: static int argv(struct mdoc *, int,
46: struct mdoc_argv *, int *, char *);
47: static int argv_single(struct mdoc *, int,
48: struct mdoc_argv *, int *, char *);
49: static int argv_opt_single(struct mdoc *, int,
50: struct mdoc_argv *, int *, char *);
51: static int argv_multi(struct mdoc *, int,
52: struct mdoc_argv *, int *, char *);
1.2 kristaps 53:
1.1 kristaps 54: /* Per-argument flags. */
55:
56: static int mdoc_argvflags[MDOC_ARG_MAX] = {
57: ARGV_NONE, /* MDOC_Split */
58: ARGV_NONE, /* MDOC_Nosplit */
59: ARGV_NONE, /* MDOC_Ragged */
60: ARGV_NONE, /* MDOC_Unfilled */
61: ARGV_NONE, /* MDOC_Literal */
62: ARGV_NONE, /* MDOC_File */
1.26 ! kristaps 63: ARGV_OPT_SINGLE, /* MDOC_Offset */
1.1 kristaps 64: ARGV_NONE, /* MDOC_Bullet */
65: ARGV_NONE, /* MDOC_Dash */
66: ARGV_NONE, /* MDOC_Hyphen */
67: ARGV_NONE, /* MDOC_Item */
68: ARGV_NONE, /* MDOC_Enum */
69: ARGV_NONE, /* MDOC_Tag */
70: ARGV_NONE, /* MDOC_Diag */
71: ARGV_NONE, /* MDOC_Hang */
72: ARGV_NONE, /* MDOC_Ohang */
73: ARGV_NONE, /* MDOC_Inset */
74: ARGV_MULTI, /* MDOC_Column */
75: ARGV_SINGLE, /* MDOC_Width */
76: ARGV_NONE, /* MDOC_Compact */
1.25 kristaps 77: ARGV_NONE, /* MDOC_Std */
1.1 kristaps 78: ARGV_NONE, /* MDOC_Filled */
79: ARGV_NONE, /* MDOC_Words */
80: ARGV_NONE, /* MDOC_Emphasis */
81: ARGV_NONE, /* MDOC_Symbolic */
82: ARGV_NONE /* MDOC_Symbolic */
83: };
84:
85: static int mdoc_argflags[MDOC_MAX] = {
1.5 kristaps 86: 0, /* Ap */
1.1 kristaps 87: 0, /* Dd */
88: 0, /* Dt */
89: 0, /* Os */
1.17 kristaps 90: 0, /* Sh */
91: 0, /* Ss */
1.1 kristaps 92: ARGS_DELIM, /* Pp */
93: ARGS_DELIM, /* D1 */
1.17 kristaps 94: ARGS_DELIM, /* Dl */
1.1 kristaps 95: 0, /* Bd */
96: 0, /* Ed */
1.17 kristaps 97: 0, /* Bl */
1.1 kristaps 98: 0, /* El */
99: 0, /* It */
100: ARGS_DELIM, /* Ad */
101: ARGS_DELIM, /* An */
1.17 kristaps 102: ARGS_DELIM, /* Ar */
103: 0, /* Cd */
1.1 kristaps 104: ARGS_DELIM, /* Cm */
105: ARGS_DELIM, /* Dv */
106: ARGS_DELIM, /* Er */
107: ARGS_DELIM, /* Ev */
108: 0, /* Ex */
1.17 kristaps 109: ARGS_DELIM, /* Fa */
1.1 kristaps 110: 0, /* Fd */
111: ARGS_DELIM, /* Fl */
1.17 kristaps 112: ARGS_DELIM, /* Fn */
113: ARGS_DELIM, /* Ft */
1.1 kristaps 114: ARGS_DELIM, /* Ic */
115: 0, /* In */
1.17 kristaps 116: ARGS_DELIM, /* Li */
117: 0, /* Nd */
1.1 kristaps 118: ARGS_DELIM, /* Nm */
119: ARGS_DELIM, /* Op */
120: 0, /* Ot */
121: ARGS_DELIM, /* Pa */
122: 0, /* Rv */
1.15 kristaps 123: ARGS_DELIM, /* St */
1.1 kristaps 124: ARGS_DELIM, /* Va */
125: ARGS_DELIM, /* Vt */
126: ARGS_DELIM, /* Xr */
1.17 kristaps 127: 0, /* %A */
128: 0, /* %B */
129: 0, /* %D */
130: 0, /* %I */
131: 0, /* %J */
132: 0, /* %N */
133: 0, /* %O */
134: 0, /* %P */
135: 0, /* %R */
136: 0, /* %T */
137: 0, /* %V */
1.1 kristaps 138: ARGS_DELIM, /* Ac */
139: 0, /* Ao */
140: ARGS_DELIM, /* Aq */
141: ARGS_DELIM, /* At */
142: ARGS_DELIM, /* Bc */
143: 0, /* Bf */
144: 0, /* Bo */
145: ARGS_DELIM, /* Bq */
146: ARGS_DELIM, /* Bsx */
147: ARGS_DELIM, /* Bx */
148: 0, /* Db */
149: ARGS_DELIM, /* Dc */
150: 0, /* Do */
151: ARGS_DELIM, /* Dq */
152: ARGS_DELIM, /* Ec */
153: 0, /* Ef */
154: ARGS_DELIM, /* Em */
155: 0, /* Eo */
156: ARGS_DELIM, /* Fx */
157: ARGS_DELIM, /* Ms */
158: ARGS_DELIM, /* No */
159: ARGS_DELIM, /* Ns */
160: ARGS_DELIM, /* Nx */
161: ARGS_DELIM, /* Ox */
162: ARGS_DELIM, /* Pc */
163: ARGS_DELIM, /* Pf */
164: 0, /* Po */
165: ARGS_DELIM, /* Pq */
166: ARGS_DELIM, /* Qc */
167: ARGS_DELIM, /* Ql */
168: 0, /* Qo */
169: ARGS_DELIM, /* Qq */
170: 0, /* Re */
171: 0, /* Rs */
172: ARGS_DELIM, /* Sc */
173: 0, /* So */
174: ARGS_DELIM, /* Sq */
175: 0, /* Sm */
176: ARGS_DELIM, /* Sx */
1.17 kristaps 177: ARGS_DELIM, /* Sy */
1.1 kristaps 178: ARGS_DELIM, /* Tn */
179: ARGS_DELIM, /* Ux */
180: ARGS_DELIM, /* Xc */
181: 0, /* Xo */
1.17 kristaps 182: 0, /* Fo */
1.1 kristaps 183: 0, /* Fc */
184: 0, /* Oo */
185: ARGS_DELIM, /* Oc */
186: 0, /* Bk */
187: 0, /* Ek */
188: 0, /* Bt */
189: 0, /* Hf */
190: 0, /* Fr */
191: 0, /* Ud */
192: 0, /* Lb */
193: ARGS_DELIM, /* Lp */
1.17 kristaps 194: ARGS_DELIM, /* Lk */
195: ARGS_DELIM, /* Mt */
1.1 kristaps 196: ARGS_DELIM, /* Brq */
197: 0, /* Bro */
198: ARGS_DELIM, /* Brc */
1.17 kristaps 199: 0, /* %C */
1.1 kristaps 200: 0, /* Es */
201: 0, /* En */
202: 0, /* Dx */
1.17 kristaps 203: 0, /* %Q */
1.14 kristaps 204: 0, /* br */
205: 0, /* sp */
1.1 kristaps 206: };
207:
208:
209: /*
210: * Parse an argument from line text. This comes in the form of -key
211: * [value0...], which may either have a single mandatory value, at least
212: * one mandatory value, an optional single value, or no value.
213: */
214: int
1.11 kristaps 215: mdoc_argv(struct mdoc *m, int line, int tok,
1.1 kristaps 216: struct mdoc_arg **v, int *pos, char *buf)
217: {
218: char *p, sv;
219: struct mdoc_argv tmp;
220: struct mdoc_arg *arg;
221:
222: if (0 == buf[*pos])
223: return(ARGV_EOLN);
224:
225: assert(' ' != buf[*pos]);
226:
227: /* Parse through to the first unescaped space. */
228:
229: p = &buf[++(*pos)];
230:
231: assert(*pos > 0);
232:
233: /* LINTED */
234: while (buf[*pos]) {
235: if (' ' == buf[*pos])
236: if ('\\' != buf[*pos - 1])
237: break;
238: (*pos)++;
239: }
240:
241: /* XXX - save zeroed byte, if not an argument. */
242:
243: sv = 0;
244: if (buf[*pos]) {
245: sv = buf[*pos];
246: buf[(*pos)++] = 0;
247: }
248:
249: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
250: tmp.line = line;
251: tmp.pos = *pos;
252:
253: /* See if our token accepts the argument. */
254:
255: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
256: /* XXX - restore saved zeroed byte. */
257: if (sv)
258: buf[*pos - 1] = sv;
259: return(ARGV_WORD);
260: }
261:
262: while (buf[*pos] && ' ' == buf[*pos])
263: (*pos)++;
264:
1.11 kristaps 265: if ( ! argv(m, line, &tmp, pos, buf))
1.1 kristaps 266: return(ARGV_ERROR);
267:
268: if (NULL == (arg = *v)) {
1.2 kristaps 269: *v = calloc(1, sizeof(struct mdoc_arg));
270: if (NULL == *v) {
1.11 kristaps 271: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 272: return(ARGV_ERROR);
273: }
1.1 kristaps 274: arg = *v;
275: }
276:
277: arg->argc++;
1.2 kristaps 278: arg->argv = realloc(arg->argv, arg->argc *
1.1 kristaps 279: sizeof(struct mdoc_argv));
280:
1.2 kristaps 281: if (NULL == arg->argv) {
1.11 kristaps 282: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 283: return(ARGV_ERROR);
284: }
285:
1.1 kristaps 286: (void)memcpy(&arg->argv[(int)arg->argc - 1],
287: &tmp, sizeof(struct mdoc_argv));
288:
289: return(ARGV_ARG);
290: }
291:
292:
293: void
294: mdoc_argv_free(struct mdoc_arg *p)
295: {
296: int i, j;
297:
298: if (NULL == p)
299: return;
300:
301: if (p->refcnt) {
302: --(p->refcnt);
303: if (p->refcnt)
304: return;
305: }
306: assert(p->argc);
307:
308: /* LINTED */
309: for (i = 0; i < (int)p->argc; i++) {
310: if (0 == p->argv[i].sz)
311: continue;
1.26 ! kristaps 312: if (NULL == p->argv[i].value)
! 313: continue;
! 314:
1.1 kristaps 315: /* LINTED */
316: for (j = 0; j < (int)p->argv[i].sz; j++)
1.26 ! kristaps 317: if (p->argv[i].value[j])
! 318: free(p->argv[i].value[j]);
1.1 kristaps 319:
320: free(p->argv[i].value);
321: }
322:
323: free(p->argv);
324: free(p);
325: }
326:
327:
328: int
1.23 kristaps 329: mdoc_zargs(struct mdoc *m, int line, int *pos,
330: char *buf, int flags, char **v)
1.19 kristaps 331: {
332:
1.23 kristaps 333: return(args(m, line, pos, buf, flags, v));
1.19 kristaps 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: {
1.21 kristaps 379: int i;
1.1 kristaps 380: char *p, *pp;
381:
1.24 kristaps 382: /*
383: * Parse out the terms (like `val' in `.Xx -arg val' or simply
384: * `.Xx val'), which can have all sorts of properties:
385: *
386: * ARGS_DELIM: use special handling if encountering trailing
387: * delimiters in the form of [[::delim::][ ]+]+.
388: *
389: * ARGS_NOWARN: don't post warnings. This is only used when
390: * re-parsing delimiters, as the warnings have already been
391: * posted.
392: *
393: * ARGS_TABSEP: use special handling for tab/`Ta' separated
394: * phrases like in `Bl -column'.
395: */
396:
1.17 kristaps 397: assert(*pos);
398: assert(' ' != buf[*pos]);
1.1 kristaps 399:
400: if (0 == buf[*pos])
401: return(ARGS_EOLN);
402:
403: /*
404: * If the first character is a delimiter and we're to look for
405: * delimited strings, then pass down the buffer seeing if it
406: * follows the pattern of [[::delim::][ ]+]+.
407: */
408:
409: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
410: for (i = *pos; buf[i]; ) {
411: if ( ! mdoc_iscdelim(buf[i]))
412: break;
413: i++;
414: if (0 == buf[i] || ' ' != buf[i])
415: break;
416: i++;
417: while (buf[i] && ' ' == buf[i])
418: i++;
419: }
1.17 kristaps 420:
1.1 kristaps 421: if (0 == buf[i]) {
422: *v = &buf[*pos];
1.23 kristaps 423: if (' ' != buf[i - 1])
424: return(ARGS_PUNCT);
425: if (ARGS_NOWARN & fl)
426: return(ARGS_PUNCT);
427: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
428: return(ARGS_ERROR);
1.1 kristaps 429: return(ARGS_PUNCT);
430: }
431: }
432:
1.17 kristaps 433: *v = &buf[*pos];
1.1 kristaps 434:
1.17 kristaps 435: /*
436: * First handle TABSEP items, restricted to `Bl -column'. This
437: * ignores conventional token parsing and instead uses tabs or
438: * `Ta' macros to separate phrases. Phrases are parsed again
439: * for arguments at a later phase.
440: */
1.1 kristaps 441:
1.17 kristaps 442: if (ARGS_TABSEP & fl) {
1.20 kristaps 443: /* Scan ahead to tab (can't be escaped). */
1.17 kristaps 444: p = strchr(*v, '\t');
445:
446: /* Scan ahead to unescaped `Ta'. */
447: for (pp = *v; ; pp++) {
448: if (NULL == (pp = strstr(pp, "Ta")))
449: break;
450: if (pp > *v && ' ' != *(pp - 1))
451: continue;
452: if (' ' == *(pp + 2) || 0 == *(pp + 2))
453: break;
454: }
455:
1.21 kristaps 456: /*
457: * Adjust new-buffer position to be beyond delimiter
458: * mark (e.g., Ta -> end + 2).
459: */
1.20 kristaps 460: if (p && pp) {
461: *pos += pp < p ? 2 : 1;
462: p = pp < p ? pp : p;
463: } else if (p && ! pp) {
464: *pos += 1;
465: } else if (pp && ! p) {
1.17 kristaps 466: p = pp;
1.20 kristaps 467: *pos += 2;
468: } else
469: p = strchr(*v, 0);
470:
1.21 kristaps 471: /* Whitespace check for eoln case... */
1.23 kristaps 472: if (0 == *p && ' ' == *(p - 1) && ! (ARGS_NOWARN & fl))
1.20 kristaps 473: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
474: return(ARGS_ERROR);
475:
476: *pos += (int)(p - *v);
1.17 kristaps 477:
478: /* Strip delimiter's preceding whitespace. */
1.20 kristaps 479: pp = p - 1;
480: while (pp > *v && ' ' == *pp) {
481: if (pp > *v && '\\' == *(pp - 1))
482: break;
483: pp--;
1.17 kristaps 484: }
1.20 kristaps 485: *(pp + 1) = 0;
1.17 kristaps 486:
1.20 kristaps 487: /* Strip delimiter's proceeding whitespace. */
488: for (pp = &buf[*pos]; ' ' == *pp; pp++, (*pos)++)
489: /* Skip ahead. */ ;
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]) {
1.23 kristaps 512: if (ARGS_NOWARN & fl)
513: return(ARGS_QWORD);
1.18 kristaps 514: if ( ! mdoc_pwarn(m, line, *pos, EQUOTTERM))
515: return(ARGS_ERROR);
516: return(ARGS_QWORD);
1.17 kristaps 517: }
1.1 kristaps 518:
519: buf[(*pos)++] = 0;
520:
521: if (0 == buf[*pos])
1.17 kristaps 522: return(ARGS_QWORD);
1.1 kristaps 523:
1.17 kristaps 524: while (' ' == buf[*pos])
525: (*pos)++;
1.1 kristaps 526:
1.23 kristaps 527: if (0 == buf[*pos] && ! (ARGS_NOWARN & fl))
1.17 kristaps 528: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
529: return(ARGS_ERROR);
1.1 kristaps 530:
1.17 kristaps 531: return(ARGS_QWORD);
1.1 kristaps 532: }
533:
1.17 kristaps 534: /*
535: * A non-quoted term progresses until either the end of line or
536: * a non-escaped whitespace.
1.1 kristaps 537: */
538:
1.17 kristaps 539: for ( ; buf[*pos]; (*pos)++)
540: if (' ' == buf[*pos] && '\\' != buf[*pos - 1])
541: break;
1.1 kristaps 542:
1.17 kristaps 543: if (0 == buf[*pos])
544: return(ARGS_WORD);
1.1 kristaps 545:
546: buf[(*pos)++] = 0;
547:
1.17 kristaps 548: while (' ' == buf[*pos])
1.1 kristaps 549: (*pos)++;
550:
1.23 kristaps 551: if (0 == buf[*pos] && ! (ARGS_NOWARN & fl))
1.17 kristaps 552: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
553: return(ARGS_ERROR);
1.1 kristaps 554:
1.17 kristaps 555: return(ARGS_WORD);
1.1 kristaps 556: }
557:
558:
559: static int
560: argv_a2arg(int tok, const char *argv)
561: {
562:
563: /*
564: * Parse an argument identifier from its text. XXX - this
565: * should really be table-driven to clarify the code.
566: *
567: * If you add an argument to the list, make sure that you
568: * register it here with its one or more macros!
569: */
570:
571: switch (tok) {
572: case (MDOC_An):
1.2 kristaps 573: if (0 == strcmp(argv, "split"))
1.1 kristaps 574: return(MDOC_Split);
1.2 kristaps 575: else if (0 == strcmp(argv, "nosplit"))
1.1 kristaps 576: return(MDOC_Nosplit);
577: break;
578:
579: case (MDOC_Bd):
1.2 kristaps 580: if (0 == strcmp(argv, "ragged"))
1.1 kristaps 581: return(MDOC_Ragged);
1.2 kristaps 582: else if (0 == strcmp(argv, "unfilled"))
1.1 kristaps 583: return(MDOC_Unfilled);
1.2 kristaps 584: else if (0 == strcmp(argv, "filled"))
1.1 kristaps 585: return(MDOC_Filled);
1.2 kristaps 586: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 587: return(MDOC_Literal);
1.2 kristaps 588: else if (0 == strcmp(argv, "file"))
1.1 kristaps 589: return(MDOC_File);
1.2 kristaps 590: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 591: return(MDOC_Offset);
1.2 kristaps 592: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 593: return(MDOC_Compact);
594: break;
595:
596: case (MDOC_Bf):
1.2 kristaps 597: if (0 == strcmp(argv, "emphasis"))
1.1 kristaps 598: return(MDOC_Emphasis);
1.2 kristaps 599: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 600: return(MDOC_Literal);
1.2 kristaps 601: else if (0 == strcmp(argv, "symbolic"))
1.1 kristaps 602: return(MDOC_Symbolic);
603: break;
604:
605: case (MDOC_Bk):
1.2 kristaps 606: if (0 == strcmp(argv, "words"))
1.1 kristaps 607: return(MDOC_Words);
608: break;
609:
610: case (MDOC_Bl):
1.2 kristaps 611: if (0 == strcmp(argv, "bullet"))
1.1 kristaps 612: return(MDOC_Bullet);
1.2 kristaps 613: else if (0 == strcmp(argv, "dash"))
1.1 kristaps 614: return(MDOC_Dash);
1.2 kristaps 615: else if (0 == strcmp(argv, "hyphen"))
1.1 kristaps 616: return(MDOC_Hyphen);
1.2 kristaps 617: else if (0 == strcmp(argv, "item"))
1.1 kristaps 618: return(MDOC_Item);
1.2 kristaps 619: else if (0 == strcmp(argv, "enum"))
1.1 kristaps 620: return(MDOC_Enum);
1.2 kristaps 621: else if (0 == strcmp(argv, "tag"))
1.1 kristaps 622: return(MDOC_Tag);
1.2 kristaps 623: else if (0 == strcmp(argv, "diag"))
1.1 kristaps 624: return(MDOC_Diag);
1.2 kristaps 625: else if (0 == strcmp(argv, "hang"))
1.1 kristaps 626: return(MDOC_Hang);
1.2 kristaps 627: else if (0 == strcmp(argv, "ohang"))
1.1 kristaps 628: return(MDOC_Ohang);
1.2 kristaps 629: else if (0 == strcmp(argv, "inset"))
1.1 kristaps 630: return(MDOC_Inset);
1.2 kristaps 631: else if (0 == strcmp(argv, "column"))
1.1 kristaps 632: return(MDOC_Column);
1.2 kristaps 633: else if (0 == strcmp(argv, "width"))
1.1 kristaps 634: return(MDOC_Width);
1.2 kristaps 635: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 636: return(MDOC_Offset);
1.2 kristaps 637: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 638: return(MDOC_Compact);
1.2 kristaps 639: else if (0 == strcmp(argv, "nested"))
1.1 kristaps 640: return(MDOC_Nested);
641: break;
642:
643: case (MDOC_Rv):
644: /* FALLTHROUGH */
645: case (MDOC_Ex):
1.2 kristaps 646: if (0 == strcmp(argv, "std"))
1.1 kristaps 647: return(MDOC_Std);
648: break;
649: default:
650: break;
651: }
652:
653: return(MDOC_ARG_MAX);
654: }
655:
656:
657: static int
1.11 kristaps 658: argv_multi(struct mdoc *m, int line,
1.1 kristaps 659: struct mdoc_argv *v, int *pos, char *buf)
660: {
1.8 kristaps 661: int c;
1.1 kristaps 662: char *p;
663:
664: for (v->sz = 0; ; v->sz++) {
665: if ('-' == buf[*pos])
666: break;
1.17 kristaps 667: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 668: if (ARGS_ERROR == c)
669: return(0);
670: else if (ARGS_EOLN == c)
671: break;
672:
1.2 kristaps 673: if (0 == v->sz % MULTI_STEP) {
674: v->value = realloc(v->value,
1.1 kristaps 675: (v->sz + MULTI_STEP) * sizeof(char *));
1.2 kristaps 676: if (NULL == v->value) {
1.11 kristaps 677: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 678: return(ARGV_ERROR);
679: }
680: }
1.1 kristaps 681: if (NULL == (v->value[(int)v->sz] = strdup(p)))
1.11 kristaps 682: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 683: }
684:
1.7 kristaps 685: return(1);
1.1 kristaps 686: }
687:
688:
689: static int
1.11 kristaps 690: argv_opt_single(struct mdoc *m, int line,
1.1 kristaps 691: struct mdoc_argv *v, int *pos, char *buf)
692: {
693: int c;
694: char *p;
695:
696: if ('-' == buf[*pos])
697: return(1);
698:
1.17 kristaps 699: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 700: if (ARGS_ERROR == c)
701: return(0);
702: if (ARGS_EOLN == c)
703: return(1);
704:
705: v->sz = 1;
706: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.11 kristaps 707: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 708: if (NULL == (v->value[0] = strdup(p)))
1.11 kristaps 709: return(mdoc_nerr(m, m->last, EMALLOC));
1.2 kristaps 710:
1.1 kristaps 711: return(1);
712: }
713:
714:
715: /*
716: * Parse a single, mandatory value from the stream.
717: */
718: static int
1.11 kristaps 719: argv_single(struct mdoc *m, int line,
1.1 kristaps 720: struct mdoc_argv *v, int *pos, char *buf)
721: {
722: int c, ppos;
723: char *p;
724:
725: ppos = *pos;
726:
1.17 kristaps 727: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 728: if (ARGS_ERROR == c)
729: return(0);
730: if (ARGS_EOLN == c)
1.11 kristaps 731: return(mdoc_perr(m, line, ppos, EARGVAL));
1.1 kristaps 732:
733: v->sz = 1;
734: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.11 kristaps 735: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 736: if (NULL == (v->value[0] = strdup(p)))
1.11 kristaps 737: return(mdoc_nerr(m, m->last, EMALLOC));
1.2 kristaps 738:
1.1 kristaps 739: return(1);
740: }
741:
742:
743: /*
744: * Determine rules for parsing arguments. Arguments can either accept
745: * no parameters, an optional single parameter, one parameter, or
746: * multiple parameters.
747: */
748: static int
749: argv(struct mdoc *mdoc, int line,
750: struct mdoc_argv *v, int *pos, char *buf)
751: {
752:
753: v->sz = 0;
754: v->value = NULL;
755:
756: switch (mdoc_argvflags[v->arg]) {
757: case (ARGV_SINGLE):
758: return(argv_single(mdoc, line, v, pos, buf));
759: case (ARGV_MULTI):
760: return(argv_multi(mdoc, line, v, pos, buf));
761: case (ARGV_OPT_SINGLE):
762: return(argv_opt_single(mdoc, line, v, pos, buf));
763: default:
764: /* ARGV_NONE */
765: break;
766: }
767:
768: return(1);
769: }
CVSweb