Annotation of mandoc/mdoc_argv.c, Revision 1.49
1.49 ! kristaps 1: /* $Id: mdoc_argv.c,v 1.48 2010/05/15 08:54:04 schwarze 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: */
1.33 kristaps 17: #ifdef HAVE_CONFIG_H
18: #include "config.h"
19: #endif
20:
1.1 kristaps 21: #include <sys/types.h>
22:
23: #include <assert.h>
24: #include <ctype.h>
25: #include <stdlib.h>
26: #include <stdio.h>
27: #include <string.h>
28:
1.49 ! kristaps 29: #include "mandoc.h"
1.1 kristaps 30: #include "libmdoc.h"
1.31 kristaps 31: #include "libmandoc.h"
1.1 kristaps 32:
33: /*
34: * Routines to parse arguments of macros. Arguments follow the syntax
35: * of `-arg [val [valN...]]'. Arguments come in all types: quoted
36: * arguments, multiple arguments per value, no-value arguments, etc.
37: *
38: * There's no limit to the number or arguments that may be allocated.
39: */
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:
1.35 kristaps 48: static int argv_a2arg(enum mdoct, const char *);
1.39 kristaps 49: static enum margserr args(struct mdoc *, int, int *,
1.1 kristaps 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 */
1.29 kristaps 68: ARGV_SINGLE, /* MDOC_File */
1.26 kristaps 69: ARGV_OPT_SINGLE, /* MDOC_Offset */
1.1 kristaps 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 */
1.25 kristaps 83: ARGV_NONE, /* MDOC_Std */
1.1 kristaps 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 */
1.17 kristaps 96: 0, /* Sh */
97: 0, /* Ss */
1.1 kristaps 98: ARGS_DELIM, /* Pp */
99: ARGS_DELIM, /* D1 */
1.17 kristaps 100: ARGS_DELIM, /* Dl */
1.1 kristaps 101: 0, /* Bd */
102: 0, /* Ed */
1.17 kristaps 103: 0, /* Bl */
1.1 kristaps 104: 0, /* El */
105: 0, /* It */
106: ARGS_DELIM, /* Ad */
107: ARGS_DELIM, /* An */
1.17 kristaps 108: ARGS_DELIM, /* Ar */
109: 0, /* Cd */
1.1 kristaps 110: ARGS_DELIM, /* Cm */
111: ARGS_DELIM, /* Dv */
112: ARGS_DELIM, /* Er */
113: ARGS_DELIM, /* Ev */
114: 0, /* Ex */
1.17 kristaps 115: ARGS_DELIM, /* Fa */
1.1 kristaps 116: 0, /* Fd */
117: ARGS_DELIM, /* Fl */
1.17 kristaps 118: ARGS_DELIM, /* Fn */
119: ARGS_DELIM, /* Ft */
1.1 kristaps 120: ARGS_DELIM, /* Ic */
121: 0, /* In */
1.17 kristaps 122: ARGS_DELIM, /* Li */
123: 0, /* Nd */
1.1 kristaps 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 */
1.17 kristaps 133: 0, /* %A */
134: 0, /* %B */
135: 0, /* %D */
136: 0, /* %I */
137: 0, /* %J */
138: 0, /* %N */
139: 0, /* %O */
140: 0, /* %P */
141: 0, /* %R */
142: 0, /* %T */
143: 0, /* %V */
1.1 kristaps 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 */
1.17 kristaps 183: ARGS_DELIM, /* Sy */
1.1 kristaps 184: ARGS_DELIM, /* Tn */
185: ARGS_DELIM, /* Ux */
186: ARGS_DELIM, /* Xc */
187: 0, /* Xo */
1.17 kristaps 188: 0, /* Fo */
1.1 kristaps 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 */
1.17 kristaps 200: ARGS_DELIM, /* Lk */
201: ARGS_DELIM, /* Mt */
1.1 kristaps 202: ARGS_DELIM, /* Brq */
203: 0, /* Bro */
204: ARGS_DELIM, /* Brc */
1.17 kristaps 205: 0, /* %C */
1.1 kristaps 206: 0, /* Es */
207: 0, /* En */
208: 0, /* Dx */
1.17 kristaps 209: 0, /* %Q */
1.14 kristaps 210: 0, /* br */
211: 0, /* sp */
1.30 kristaps 212: 0, /* %U */
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: */
1.40 kristaps 221: enum margverr
1.35 kristaps 222: mdoc_argv(struct mdoc *m, int line, enum mdoct tok,
1.1 kristaps 223: struct mdoc_arg **v, int *pos, char *buf)
224: {
225: char *p, sv;
226: struct mdoc_argv tmp;
227: struct mdoc_arg *arg;
228:
229: if (0 == buf[*pos])
230: return(ARGV_EOLN);
231:
232: assert(' ' != buf[*pos]);
233:
234: /* Parse through to the first unescaped space. */
235:
236: p = &buf[++(*pos)];
237:
238: assert(*pos > 0);
239:
240: /* LINTED */
241: while (buf[*pos]) {
242: if (' ' == buf[*pos])
243: if ('\\' != buf[*pos - 1])
244: break;
245: (*pos)++;
246: }
247:
248: /* XXX - save zeroed byte, if not an argument. */
249:
250: sv = 0;
251: if (buf[*pos]) {
252: sv = buf[*pos];
253: buf[(*pos)++] = 0;
254: }
255:
256: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
257: tmp.line = line;
258: tmp.pos = *pos;
259:
260: /* See if our token accepts the argument. */
261:
262: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
263: /* XXX - restore saved zeroed byte. */
264: if (sv)
265: buf[*pos - 1] = sv;
266: return(ARGV_WORD);
267: }
268:
269: while (buf[*pos] && ' ' == buf[*pos])
270: (*pos)++;
271:
1.11 kristaps 272: if ( ! argv(m, line, &tmp, pos, buf))
1.1 kristaps 273: return(ARGV_ERROR);
274:
1.31 kristaps 275: if (NULL == (arg = *v))
1.32 kristaps 276: arg = *v = mandoc_calloc(1, sizeof(struct mdoc_arg));
1.1 kristaps 277:
278: arg->argc++;
1.31 kristaps 279: arg->argv = mandoc_realloc
280: (arg->argv, arg->argc * sizeof(struct mdoc_argv));
1.2 kristaps 281:
1.1 kristaps 282: (void)memcpy(&arg->argv[(int)arg->argc - 1],
283: &tmp, sizeof(struct mdoc_argv));
284:
285: return(ARGV_ARG);
286: }
287:
288:
289: void
290: mdoc_argv_free(struct mdoc_arg *p)
291: {
1.37 kristaps 292: int i;
1.1 kristaps 293:
294: if (NULL == p)
295: return;
296:
297: if (p->refcnt) {
298: --(p->refcnt);
299: if (p->refcnt)
300: return;
301: }
302: assert(p->argc);
303:
1.37 kristaps 304: for (i = (int)p->argc - 1; i >= 0; i--)
305: mdoc_argn_free(p, i);
306:
307: free(p->argv);
308: free(p);
309: }
310:
311:
312: void
313: mdoc_argn_free(struct mdoc_arg *p, int iarg)
314: {
315: struct mdoc_argv *arg = &p->argv[iarg];
316: int j;
1.1 kristaps 317:
1.37 kristaps 318: if (arg->sz && arg->value) {
319: for (j = (int)arg->sz - 1; j >= 0; j--)
320: free(arg->value[j]);
321: free(arg->value);
1.1 kristaps 322: }
323:
1.37 kristaps 324: for (--p->argc; iarg < (int)p->argc; iarg++)
325: p->argv[iarg] = p->argv[iarg+1];
1.1 kristaps 326: }
327:
328:
1.39 kristaps 329: enum margserr
1.23 kristaps 330: mdoc_zargs(struct mdoc *m, int line, int *pos,
331: char *buf, int flags, char **v)
1.19 kristaps 332: {
333:
1.23 kristaps 334: return(args(m, line, pos, buf, flags, v));
1.19 kristaps 335: }
336:
337:
1.39 kristaps 338: enum margserr
1.35 kristaps 339: mdoc_args(struct mdoc *m, int line, int *pos,
340: char *buf, enum mdoct tok, char **v)
1.1 kristaps 341: {
342: int fl, c, i;
343: struct mdoc_node *n;
344:
1.35 kristaps 345: fl = mdoc_argflags[tok];
1.1 kristaps 346:
1.17 kristaps 347: if (MDOC_It != tok)
348: return(args(m, line, pos, buf, fl, v));
349:
1.1 kristaps 350: /*
1.17 kristaps 351: * The `It' macro is a special case, as it acquires parameters from its
352: * parent `Bl' context, specifically, we're concerned with -column.
1.1 kristaps 353: */
354:
1.17 kristaps 355: for (n = m->last; n; n = n->parent)
356: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
357: break;
1.1 kristaps 358:
1.17 kristaps 359: assert(n);
360: c = (int)(n->args ? n->args->argc : 0);
361: assert(c > 0);
1.1 kristaps 362:
1.17 kristaps 363: /* LINTED */
364: for (i = 0; i < c; i++) {
365: if (MDOC_Column != n->args->argv[i].arg)
366: continue;
367: fl |= ARGS_TABSEP;
368: fl &= ~ARGS_DELIM;
1.1 kristaps 369: break;
370: }
371:
1.11 kristaps 372: return(args(m, line, pos, buf, fl, v));
1.1 kristaps 373: }
374:
375:
1.39 kristaps 376: static enum margserr
1.13 kristaps 377: args(struct mdoc *m, int line, int *pos,
378: char *buf, int fl, char **v)
1.1 kristaps 379: {
1.21 kristaps 380: int i;
1.1 kristaps 381: char *p, *pp;
1.41 kristaps 382: enum margserr rc;
1.1 kristaps 383:
1.24 kristaps 384: /*
385: * Parse out the terms (like `val' in `.Xx -arg val' or simply
386: * `.Xx val'), which can have all sorts of properties:
387: *
388: * ARGS_DELIM: use special handling if encountering trailing
389: * delimiters in the form of [[::delim::][ ]+]+.
390: *
391: * ARGS_NOWARN: don't post warnings. This is only used when
392: * re-parsing delimiters, as the warnings have already been
393: * posted.
394: *
395: * ARGS_TABSEP: use special handling for tab/`Ta' separated
396: * phrases like in `Bl -column'.
397: */
398:
1.17 kristaps 399: assert(*pos);
400: assert(' ' != buf[*pos]);
1.1 kristaps 401:
1.46 kristaps 402: if ('\0' == buf[*pos]) {
1.47 kristaps 403: if (MDOC_PPHRASE & m->flags)
1.46 kristaps 404: return(ARGS_EOLN);
405: /*
406: * If we're not in a partial phrase and the flag for
407: * being a phrase literal is still set, the punctuation
408: * is unterminated.
409: */
410: if (MDOC_PHRASELIT & m->flags)
1.49 ! kristaps 411: if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_BADQUOTE))
1.46 kristaps 412: return(ARGS_ERROR);
413:
414: m->flags &= ~MDOC_PHRASELIT;
1.1 kristaps 415: return(ARGS_EOLN);
1.46 kristaps 416: }
1.1 kristaps 417:
418: /*
1.45 kristaps 419: * If the first character is a closing delimiter and we're to
420: * look for delimited strings, then pass down the buffer seeing
421: * if it follows the pattern of [[::delim::][ ]+]+. Note that
422: * we ONLY care about closing delimiters.
1.1 kristaps 423: */
424:
1.48 schwarze 425: if ((fl & ARGS_DELIM) && DELIM_CLOSE == mdoc_iscdelim(buf[*pos])) {
1.1 kristaps 426: for (i = *pos; buf[i]; ) {
1.48 schwarze 427: enum mdelim d = mdoc_iscdelim(buf[i]);
428: if (DELIM_NONE == d || DELIM_OPEN == d)
1.1 kristaps 429: break;
430: i++;
1.45 kristaps 431: if ('\0' == buf[i] || ' ' != buf[i])
1.1 kristaps 432: break;
433: i++;
434: while (buf[i] && ' ' == buf[i])
435: i++;
436: }
1.17 kristaps 437:
1.45 kristaps 438: if ('\0' == buf[i]) {
1.1 kristaps 439: *v = &buf[*pos];
1.23 kristaps 440: if (' ' != buf[i - 1])
441: return(ARGS_PUNCT);
442: if (ARGS_NOWARN & fl)
443: return(ARGS_PUNCT);
1.49 ! kristaps 444: if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE))
1.23 kristaps 445: return(ARGS_ERROR);
1.1 kristaps 446: return(ARGS_PUNCT);
447: }
448: }
449:
1.17 kristaps 450: *v = &buf[*pos];
1.1 kristaps 451:
1.17 kristaps 452: /*
453: * First handle TABSEP items, restricted to `Bl -column'. This
454: * ignores conventional token parsing and instead uses tabs or
455: * `Ta' macros to separate phrases. Phrases are parsed again
456: * for arguments at a later phase.
457: */
1.1 kristaps 458:
1.17 kristaps 459: if (ARGS_TABSEP & fl) {
1.20 kristaps 460: /* Scan ahead to tab (can't be escaped). */
1.17 kristaps 461: p = strchr(*v, '\t');
1.46 kristaps 462: pp = NULL;
1.17 kristaps 463:
464: /* Scan ahead to unescaped `Ta'. */
1.46 kristaps 465: if ( ! (MDOC_PHRASELIT & m->flags))
466: for (pp = *v; ; pp++) {
467: if (NULL == (pp = strstr(pp, "Ta")))
468: break;
469: if (pp > *v && ' ' != *(pp - 1))
470: continue;
471: if (' ' == *(pp + 2) || 0 == *(pp + 2))
472: break;
473: }
1.17 kristaps 474:
1.42 kristaps 475: /* By default, assume a phrase. */
476: rc = ARGS_PHRASE;
477:
1.21 kristaps 478: /*
479: * Adjust new-buffer position to be beyond delimiter
480: * mark (e.g., Ta -> end + 2).
481: */
1.20 kristaps 482: if (p && pp) {
483: *pos += pp < p ? 2 : 1;
1.42 kristaps 484: rc = pp < p ? ARGS_PHRASE : ARGS_PPHRASE;
1.20 kristaps 485: p = pp < p ? pp : p;
486: } else if (p && ! pp) {
1.42 kristaps 487: rc = ARGS_PPHRASE;
1.20 kristaps 488: *pos += 1;
489: } else if (pp && ! p) {
1.17 kristaps 490: p = pp;
1.20 kristaps 491: *pos += 2;
1.44 kristaps 492: } else {
493: rc = ARGS_PEND;
1.20 kristaps 494: p = strchr(*v, 0);
1.44 kristaps 495: }
1.20 kristaps 496:
1.21 kristaps 497: /* Whitespace check for eoln case... */
1.23 kristaps 498: if (0 == *p && ' ' == *(p - 1) && ! (ARGS_NOWARN & fl))
1.49 ! kristaps 499: if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE))
1.20 kristaps 500: return(ARGS_ERROR);
501:
502: *pos += (int)(p - *v);
1.17 kristaps 503:
504: /* Strip delimiter's preceding whitespace. */
1.20 kristaps 505: pp = p - 1;
506: while (pp > *v && ' ' == *pp) {
507: if (pp > *v && '\\' == *(pp - 1))
508: break;
509: pp--;
1.17 kristaps 510: }
1.20 kristaps 511: *(pp + 1) = 0;
1.17 kristaps 512:
1.20 kristaps 513: /* Strip delimiter's proceeding whitespace. */
514: for (pp = &buf[*pos]; ' ' == *pp; pp++, (*pos)++)
515: /* Skip ahead. */ ;
1.1 kristaps 516:
1.41 kristaps 517: return(rc);
1.17 kristaps 518: }
1.1 kristaps 519:
1.17 kristaps 520: /*
521: * Process a quoted literal. A quote begins with a double-quote
522: * and ends with a double-quote NOT preceded by a double-quote.
523: * Whitespace is NOT involved in literal termination.
524: */
1.1 kristaps 525:
1.46 kristaps 526: if (MDOC_PHRASELIT & m->flags || '\"' == buf[*pos]) {
527: if ( ! (MDOC_PHRASELIT & m->flags))
528: *v = &buf[++(*pos)];
529:
1.47 kristaps 530: if (MDOC_PPHRASE & m->flags)
1.46 kristaps 531: m->flags |= MDOC_PHRASELIT;
1.1 kristaps 532:
1.17 kristaps 533: for ( ; buf[*pos]; (*pos)++) {
534: if ('\"' != buf[*pos])
535: continue;
536: if ('\"' != buf[*pos + 1])
537: break;
538: (*pos)++;
539: }
1.1 kristaps 540:
1.46 kristaps 541: if ('\0' == buf[*pos]) {
1.47 kristaps 542: if (ARGS_NOWARN & fl || MDOC_PPHRASE & m->flags)
1.23 kristaps 543: return(ARGS_QWORD);
1.49 ! kristaps 544: if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_BADQUOTE))
1.18 kristaps 545: return(ARGS_ERROR);
546: return(ARGS_QWORD);
1.17 kristaps 547: }
1.1 kristaps 548:
1.46 kristaps 549: m->flags &= ~MDOC_PHRASELIT;
550: buf[(*pos)++] = '\0';
1.1 kristaps 551:
1.46 kristaps 552: if ('\0' == buf[*pos])
1.17 kristaps 553: return(ARGS_QWORD);
1.1 kristaps 554:
1.17 kristaps 555: while (' ' == buf[*pos])
556: (*pos)++;
1.1 kristaps 557:
1.23 kristaps 558: if (0 == buf[*pos] && ! (ARGS_NOWARN & fl))
1.49 ! kristaps 559: if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE))
1.17 kristaps 560: return(ARGS_ERROR);
1.1 kristaps 561:
1.17 kristaps 562: return(ARGS_QWORD);
1.1 kristaps 563: }
564:
1.17 kristaps 565: /*
566: * A non-quoted term progresses until either the end of line or
567: * a non-escaped whitespace.
1.1 kristaps 568: */
569:
1.17 kristaps 570: for ( ; buf[*pos]; (*pos)++)
571: if (' ' == buf[*pos] && '\\' != buf[*pos - 1])
572: break;
1.1 kristaps 573:
1.46 kristaps 574: if ('\0' == buf[*pos])
1.17 kristaps 575: return(ARGS_WORD);
1.1 kristaps 576:
1.46 kristaps 577: buf[(*pos)++] = '\0';
1.1 kristaps 578:
1.17 kristaps 579: while (' ' == buf[*pos])
1.1 kristaps 580: (*pos)++;
581:
1.46 kristaps 582: if ('\0' == buf[*pos] && ! (ARGS_NOWARN & fl))
1.49 ! kristaps 583: if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE))
1.17 kristaps 584: return(ARGS_ERROR);
1.1 kristaps 585:
1.17 kristaps 586: return(ARGS_WORD);
1.1 kristaps 587: }
588:
589:
590: static int
1.35 kristaps 591: argv_a2arg(enum mdoct tok, const char *p)
1.1 kristaps 592: {
593:
594: /*
595: * Parse an argument identifier from its text. XXX - this
596: * should really be table-driven to clarify the code.
597: *
598: * If you add an argument to the list, make sure that you
599: * register it here with its one or more macros!
600: */
601:
602: switch (tok) {
603: case (MDOC_An):
1.27 kristaps 604: if (0 == strcmp(p, "split"))
1.1 kristaps 605: return(MDOC_Split);
1.27 kristaps 606: else if (0 == strcmp(p, "nosplit"))
1.1 kristaps 607: return(MDOC_Nosplit);
608: break;
609:
610: case (MDOC_Bd):
1.27 kristaps 611: if (0 == strcmp(p, "ragged"))
1.1 kristaps 612: return(MDOC_Ragged);
1.27 kristaps 613: else if (0 == strcmp(p, "unfilled"))
1.1 kristaps 614: return(MDOC_Unfilled);
1.27 kristaps 615: else if (0 == strcmp(p, "filled"))
1.1 kristaps 616: return(MDOC_Filled);
1.27 kristaps 617: else if (0 == strcmp(p, "literal"))
1.1 kristaps 618: return(MDOC_Literal);
1.27 kristaps 619: else if (0 == strcmp(p, "file"))
1.1 kristaps 620: return(MDOC_File);
1.27 kristaps 621: else if (0 == strcmp(p, "offset"))
1.1 kristaps 622: return(MDOC_Offset);
1.27 kristaps 623: else if (0 == strcmp(p, "compact"))
1.1 kristaps 624: return(MDOC_Compact);
1.28 kristaps 625: else if (0 == strcmp(p, "centered"))
626: return(MDOC_Centred);
1.1 kristaps 627: break;
628:
629: case (MDOC_Bf):
1.27 kristaps 630: if (0 == strcmp(p, "emphasis"))
1.1 kristaps 631: return(MDOC_Emphasis);
1.27 kristaps 632: else if (0 == strcmp(p, "literal"))
1.1 kristaps 633: return(MDOC_Literal);
1.27 kristaps 634: else if (0 == strcmp(p, "symbolic"))
1.1 kristaps 635: return(MDOC_Symbolic);
636: break;
637:
638: case (MDOC_Bk):
1.27 kristaps 639: if (0 == strcmp(p, "words"))
1.1 kristaps 640: return(MDOC_Words);
641: break;
642:
643: case (MDOC_Bl):
1.27 kristaps 644: if (0 == strcmp(p, "bullet"))
1.1 kristaps 645: return(MDOC_Bullet);
1.27 kristaps 646: else if (0 == strcmp(p, "dash"))
1.1 kristaps 647: return(MDOC_Dash);
1.27 kristaps 648: else if (0 == strcmp(p, "hyphen"))
1.1 kristaps 649: return(MDOC_Hyphen);
1.27 kristaps 650: else if (0 == strcmp(p, "item"))
1.1 kristaps 651: return(MDOC_Item);
1.27 kristaps 652: else if (0 == strcmp(p, "enum"))
1.1 kristaps 653: return(MDOC_Enum);
1.27 kristaps 654: else if (0 == strcmp(p, "tag"))
1.1 kristaps 655: return(MDOC_Tag);
1.27 kristaps 656: else if (0 == strcmp(p, "diag"))
1.1 kristaps 657: return(MDOC_Diag);
1.27 kristaps 658: else if (0 == strcmp(p, "hang"))
1.1 kristaps 659: return(MDOC_Hang);
1.27 kristaps 660: else if (0 == strcmp(p, "ohang"))
1.1 kristaps 661: return(MDOC_Ohang);
1.27 kristaps 662: else if (0 == strcmp(p, "inset"))
1.1 kristaps 663: return(MDOC_Inset);
1.27 kristaps 664: else if (0 == strcmp(p, "column"))
1.1 kristaps 665: return(MDOC_Column);
1.27 kristaps 666: else if (0 == strcmp(p, "width"))
1.1 kristaps 667: return(MDOC_Width);
1.27 kristaps 668: else if (0 == strcmp(p, "offset"))
1.1 kristaps 669: return(MDOC_Offset);
1.27 kristaps 670: else if (0 == strcmp(p, "compact"))
1.1 kristaps 671: return(MDOC_Compact);
1.27 kristaps 672: else if (0 == strcmp(p, "nested"))
1.1 kristaps 673: return(MDOC_Nested);
674: break;
675:
676: case (MDOC_Rv):
677: /* FALLTHROUGH */
678: case (MDOC_Ex):
1.27 kristaps 679: if (0 == strcmp(p, "std"))
1.1 kristaps 680: return(MDOC_Std);
681: break;
682: default:
683: break;
684: }
685:
686: return(MDOC_ARG_MAX);
687: }
688:
689:
690: static int
1.11 kristaps 691: argv_multi(struct mdoc *m, int line,
1.1 kristaps 692: struct mdoc_argv *v, int *pos, char *buf)
693: {
1.43 kristaps 694: enum margserr ac;
1.1 kristaps 695: char *p;
696:
697: for (v->sz = 0; ; v->sz++) {
698: if ('-' == buf[*pos])
699: break;
1.43 kristaps 700: ac = args(m, line, pos, buf, 0, &p);
701: if (ARGS_ERROR == ac)
1.1 kristaps 702: return(0);
1.43 kristaps 703: else if (ARGS_EOLN == ac)
1.1 kristaps 704: break;
705:
1.31 kristaps 706: if (0 == v->sz % MULTI_STEP)
707: v->value = mandoc_realloc(v->value,
1.1 kristaps 708: (v->sz + MULTI_STEP) * sizeof(char *));
1.31 kristaps 709:
710: v->value[(int)v->sz] = mandoc_strdup(p);
1.1 kristaps 711: }
712:
1.7 kristaps 713: return(1);
1.1 kristaps 714: }
715:
716:
717: static int
1.11 kristaps 718: argv_opt_single(struct mdoc *m, int line,
1.1 kristaps 719: struct mdoc_argv *v, int *pos, char *buf)
720: {
1.43 kristaps 721: enum margserr ac;
1.1 kristaps 722: char *p;
723:
724: if ('-' == buf[*pos])
725: return(1);
726:
1.43 kristaps 727: ac = args(m, line, pos, buf, 0, &p);
728: if (ARGS_ERROR == ac)
1.1 kristaps 729: return(0);
1.43 kristaps 730: if (ARGS_EOLN == ac)
1.1 kristaps 731: return(1);
732:
733: v->sz = 1;
1.31 kristaps 734: v->value = mandoc_malloc(sizeof(char *));
735: v->value[0] = mandoc_strdup(p);
1.2 kristaps 736:
1.1 kristaps 737: return(1);
738: }
739:
740:
741: /*
742: * Parse a single, mandatory value from the stream.
743: */
744: static int
1.11 kristaps 745: argv_single(struct mdoc *m, int line,
1.1 kristaps 746: struct mdoc_argv *v, int *pos, char *buf)
747: {
1.43 kristaps 748: int ppos;
749: enum margserr ac;
1.1 kristaps 750: char *p;
751:
752: ppos = *pos;
753:
1.43 kristaps 754: ac = args(m, line, pos, buf, 0, &p);
1.49 ! kristaps 755: if (ARGS_EOLN == ac) {
! 756: mdoc_pmsg(m, line, ppos, MANDOCERR_SYNTARGVCOUNT);
! 757: return(0);
! 758: } else if (ARGS_ERROR == ac)
1.1 kristaps 759: return(0);
760:
761: v->sz = 1;
1.31 kristaps 762: v->value = mandoc_malloc(sizeof(char *));
763: v->value[0] = mandoc_strdup(p);
1.2 kristaps 764:
1.1 kristaps 765: return(1);
766: }
767:
768:
769: /*
770: * Determine rules for parsing arguments. Arguments can either accept
771: * no parameters, an optional single parameter, one parameter, or
772: * multiple parameters.
773: */
774: static int
775: argv(struct mdoc *mdoc, int line,
776: struct mdoc_argv *v, int *pos, char *buf)
777: {
778:
779: v->sz = 0;
780: v->value = NULL;
781:
782: switch (mdoc_argvflags[v->arg]) {
783: case (ARGV_SINGLE):
784: return(argv_single(mdoc, line, v, pos, buf));
785: case (ARGV_MULTI):
786: return(argv_multi(mdoc, line, v, pos, buf));
787: case (ARGV_OPT_SINGLE):
788: return(argv_opt_single(mdoc, line, v, pos, buf));
789: default:
790: /* ARGV_NONE */
791: break;
792: }
793:
794: return(1);
795: }
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