Annotation of mandoc/mdoc_argv.c, Revision 1.48
1.48 ! schwarze 1: /* $Id: mdoc_argv.c,v 1.47 2010/05/15 04:47:38 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: */
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:
29: #include "libmdoc.h"
1.31 kristaps 30: #include "libmandoc.h"
1.1 kristaps 31:
32: /*
33: * Routines to parse arguments of macros. Arguments follow the syntax
34: * of `-arg [val [valN...]]'. Arguments come in all types: quoted
35: * arguments, multiple arguments per value, no-value arguments, etc.
36: *
37: * There's no limit to the number or arguments that may be allocated.
38: */
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:
1.35 kristaps 47: static int argv_a2arg(enum mdoct, const char *);
1.39 kristaps 48: static enum margserr args(struct mdoc *, int, int *,
1.1 kristaps 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 */
1.29 kristaps 67: ARGV_SINGLE, /* MDOC_File */
1.26 kristaps 68: ARGV_OPT_SINGLE, /* MDOC_Offset */
1.1 kristaps 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 */
1.25 kristaps 82: ARGV_NONE, /* MDOC_Std */
1.1 kristaps 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 */
1.30 kristaps 211: 0, /* %U */
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: */
1.40 kristaps 220: enum margverr
1.35 kristaps 221: mdoc_argv(struct mdoc *m, int line, enum mdoct 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:
1.31 kristaps 274: if (NULL == (arg = *v))
1.32 kristaps 275: arg = *v = mandoc_calloc(1, sizeof(struct mdoc_arg));
1.1 kristaps 276:
277: arg->argc++;
1.31 kristaps 278: arg->argv = mandoc_realloc
279: (arg->argv, arg->argc * sizeof(struct mdoc_argv));
1.2 kristaps 280:
1.1 kristaps 281: (void)memcpy(&arg->argv[(int)arg->argc - 1],
282: &tmp, sizeof(struct mdoc_argv));
283:
284: return(ARGV_ARG);
285: }
286:
287:
288: void
289: mdoc_argv_free(struct mdoc_arg *p)
290: {
1.37 kristaps 291: int i;
1.1 kristaps 292:
293: if (NULL == p)
294: return;
295:
296: if (p->refcnt) {
297: --(p->refcnt);
298: if (p->refcnt)
299: return;
300: }
301: assert(p->argc);
302:
1.37 kristaps 303: for (i = (int)p->argc - 1; i >= 0; i--)
304: mdoc_argn_free(p, i);
305:
306: free(p->argv);
307: free(p);
308: }
309:
310:
311: void
312: mdoc_argn_free(struct mdoc_arg *p, int iarg)
313: {
314: struct mdoc_argv *arg = &p->argv[iarg];
315: int j;
1.1 kristaps 316:
1.37 kristaps 317: if (arg->sz && arg->value) {
318: for (j = (int)arg->sz - 1; j >= 0; j--)
319: free(arg->value[j]);
320: free(arg->value);
1.1 kristaps 321: }
322:
1.37 kristaps 323: for (--p->argc; iarg < (int)p->argc; iarg++)
324: p->argv[iarg] = p->argv[iarg+1];
1.1 kristaps 325: }
326:
327:
1.39 kristaps 328: enum margserr
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:
1.39 kristaps 337: enum margserr
1.35 kristaps 338: mdoc_args(struct mdoc *m, int line, int *pos,
339: char *buf, enum mdoct tok, char **v)
1.1 kristaps 340: {
341: int fl, c, i;
342: struct mdoc_node *n;
343:
1.35 kristaps 344: fl = mdoc_argflags[tok];
1.1 kristaps 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:
1.39 kristaps 375: static enum margserr
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;
1.41 kristaps 381: enum margserr rc;
1.1 kristaps 382:
1.24 kristaps 383: /*
384: * Parse out the terms (like `val' in `.Xx -arg val' or simply
385: * `.Xx val'), which can have all sorts of properties:
386: *
387: * ARGS_DELIM: use special handling if encountering trailing
388: * delimiters in the form of [[::delim::][ ]+]+.
389: *
390: * ARGS_NOWARN: don't post warnings. This is only used when
391: * re-parsing delimiters, as the warnings have already been
392: * posted.
393: *
394: * ARGS_TABSEP: use special handling for tab/`Ta' separated
395: * phrases like in `Bl -column'.
396: */
397:
1.17 kristaps 398: assert(*pos);
399: assert(' ' != buf[*pos]);
1.1 kristaps 400:
1.46 kristaps 401: if ('\0' == buf[*pos]) {
1.47 kristaps 402: if (MDOC_PPHRASE & m->flags)
1.46 kristaps 403: return(ARGS_EOLN);
404: /*
405: * If we're not in a partial phrase and the flag for
406: * being a phrase literal is still set, the punctuation
407: * is unterminated.
408: */
409: if (MDOC_PHRASELIT & m->flags)
410: if ( ! mdoc_pwarn(m, line, *pos, EQUOTTERM))
411: return(ARGS_ERROR);
412:
413: m->flags &= ~MDOC_PHRASELIT;
1.1 kristaps 414: return(ARGS_EOLN);
1.46 kristaps 415: }
1.1 kristaps 416:
417: /*
1.45 kristaps 418: * If the first character is a closing delimiter and we're to
419: * look for delimited strings, then pass down the buffer seeing
420: * if it follows the pattern of [[::delim::][ ]+]+. Note that
421: * we ONLY care about closing delimiters.
1.1 kristaps 422: */
423:
1.48 ! schwarze 424: if ((fl & ARGS_DELIM) && DELIM_CLOSE == mdoc_iscdelim(buf[*pos])) {
1.1 kristaps 425: for (i = *pos; buf[i]; ) {
1.48 ! schwarze 426: enum mdelim d = mdoc_iscdelim(buf[i]);
! 427: if (DELIM_NONE == d || DELIM_OPEN == d)
1.1 kristaps 428: break;
429: i++;
1.45 kristaps 430: if ('\0' == buf[i] || ' ' != buf[i])
1.1 kristaps 431: break;
432: i++;
433: while (buf[i] && ' ' == buf[i])
434: i++;
435: }
1.17 kristaps 436:
1.45 kristaps 437: if ('\0' == buf[i]) {
1.1 kristaps 438: *v = &buf[*pos];
1.23 kristaps 439: if (' ' != buf[i - 1])
440: return(ARGS_PUNCT);
441: if (ARGS_NOWARN & fl)
442: return(ARGS_PUNCT);
443: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
444: return(ARGS_ERROR);
1.1 kristaps 445: return(ARGS_PUNCT);
446: }
447: }
448:
1.17 kristaps 449: *v = &buf[*pos];
1.1 kristaps 450:
1.17 kristaps 451: /*
452: * First handle TABSEP items, restricted to `Bl -column'. This
453: * ignores conventional token parsing and instead uses tabs or
454: * `Ta' macros to separate phrases. Phrases are parsed again
455: * for arguments at a later phase.
456: */
1.1 kristaps 457:
1.17 kristaps 458: if (ARGS_TABSEP & fl) {
1.20 kristaps 459: /* Scan ahead to tab (can't be escaped). */
1.17 kristaps 460: p = strchr(*v, '\t');
1.46 kristaps 461: pp = NULL;
1.17 kristaps 462:
463: /* Scan ahead to unescaped `Ta'. */
1.46 kristaps 464: if ( ! (MDOC_PHRASELIT & m->flags))
465: for (pp = *v; ; pp++) {
466: if (NULL == (pp = strstr(pp, "Ta")))
467: break;
468: if (pp > *v && ' ' != *(pp - 1))
469: continue;
470: if (' ' == *(pp + 2) || 0 == *(pp + 2))
471: break;
472: }
1.17 kristaps 473:
1.42 kristaps 474: /* By default, assume a phrase. */
475: rc = ARGS_PHRASE;
476:
1.21 kristaps 477: /*
478: * Adjust new-buffer position to be beyond delimiter
479: * mark (e.g., Ta -> end + 2).
480: */
1.20 kristaps 481: if (p && pp) {
482: *pos += pp < p ? 2 : 1;
1.42 kristaps 483: rc = pp < p ? ARGS_PHRASE : ARGS_PPHRASE;
1.20 kristaps 484: p = pp < p ? pp : p;
485: } else if (p && ! pp) {
1.42 kristaps 486: rc = ARGS_PPHRASE;
1.20 kristaps 487: *pos += 1;
488: } else if (pp && ! p) {
1.17 kristaps 489: p = pp;
1.20 kristaps 490: *pos += 2;
1.44 kristaps 491: } else {
492: rc = ARGS_PEND;
1.20 kristaps 493: p = strchr(*v, 0);
1.44 kristaps 494: }
1.20 kristaps 495:
1.21 kristaps 496: /* Whitespace check for eoln case... */
1.23 kristaps 497: if (0 == *p && ' ' == *(p - 1) && ! (ARGS_NOWARN & fl))
1.20 kristaps 498: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
499: return(ARGS_ERROR);
500:
501: *pos += (int)(p - *v);
1.17 kristaps 502:
503: /* Strip delimiter's preceding whitespace. */
1.20 kristaps 504: pp = p - 1;
505: while (pp > *v && ' ' == *pp) {
506: if (pp > *v && '\\' == *(pp - 1))
507: break;
508: pp--;
1.17 kristaps 509: }
1.20 kristaps 510: *(pp + 1) = 0;
1.17 kristaps 511:
1.20 kristaps 512: /* Strip delimiter's proceeding whitespace. */
513: for (pp = &buf[*pos]; ' ' == *pp; pp++, (*pos)++)
514: /* Skip ahead. */ ;
1.1 kristaps 515:
1.41 kristaps 516: return(rc);
1.17 kristaps 517: }
1.1 kristaps 518:
1.17 kristaps 519: /*
520: * Process a quoted literal. A quote begins with a double-quote
521: * and ends with a double-quote NOT preceded by a double-quote.
522: * Whitespace is NOT involved in literal termination.
523: */
1.1 kristaps 524:
1.46 kristaps 525: if (MDOC_PHRASELIT & m->flags || '\"' == buf[*pos]) {
526: if ( ! (MDOC_PHRASELIT & m->flags))
527: *v = &buf[++(*pos)];
528:
1.47 kristaps 529: if (MDOC_PPHRASE & m->flags)
1.46 kristaps 530: m->flags |= MDOC_PHRASELIT;
1.1 kristaps 531:
1.17 kristaps 532: for ( ; buf[*pos]; (*pos)++) {
533: if ('\"' != buf[*pos])
534: continue;
535: if ('\"' != buf[*pos + 1])
536: break;
537: (*pos)++;
538: }
1.1 kristaps 539:
1.46 kristaps 540: if ('\0' == buf[*pos]) {
1.47 kristaps 541: if (ARGS_NOWARN & fl || MDOC_PPHRASE & m->flags)
1.23 kristaps 542: return(ARGS_QWORD);
1.18 kristaps 543: if ( ! mdoc_pwarn(m, line, *pos, EQUOTTERM))
544: return(ARGS_ERROR);
545: return(ARGS_QWORD);
1.17 kristaps 546: }
1.1 kristaps 547:
1.46 kristaps 548: m->flags &= ~MDOC_PHRASELIT;
549: buf[(*pos)++] = '\0';
1.1 kristaps 550:
1.46 kristaps 551: if ('\0' == buf[*pos])
1.17 kristaps 552: return(ARGS_QWORD);
1.1 kristaps 553:
1.17 kristaps 554: while (' ' == buf[*pos])
555: (*pos)++;
1.1 kristaps 556:
1.23 kristaps 557: if (0 == buf[*pos] && ! (ARGS_NOWARN & fl))
1.17 kristaps 558: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
559: return(ARGS_ERROR);
1.1 kristaps 560:
1.17 kristaps 561: return(ARGS_QWORD);
1.1 kristaps 562: }
563:
1.17 kristaps 564: /*
565: * A non-quoted term progresses until either the end of line or
566: * a non-escaped whitespace.
1.1 kristaps 567: */
568:
1.17 kristaps 569: for ( ; buf[*pos]; (*pos)++)
570: if (' ' == buf[*pos] && '\\' != buf[*pos - 1])
571: break;
1.1 kristaps 572:
1.46 kristaps 573: if ('\0' == buf[*pos])
1.17 kristaps 574: return(ARGS_WORD);
1.1 kristaps 575:
1.46 kristaps 576: buf[(*pos)++] = '\0';
1.1 kristaps 577:
1.17 kristaps 578: while (' ' == buf[*pos])
1.1 kristaps 579: (*pos)++;
580:
1.46 kristaps 581: if ('\0' == buf[*pos] && ! (ARGS_NOWARN & fl))
1.17 kristaps 582: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
583: return(ARGS_ERROR);
1.1 kristaps 584:
1.17 kristaps 585: return(ARGS_WORD);
1.1 kristaps 586: }
587:
588:
589: static int
1.35 kristaps 590: argv_a2arg(enum mdoct tok, const char *p)
1.1 kristaps 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):
1.27 kristaps 603: if (0 == strcmp(p, "split"))
1.1 kristaps 604: return(MDOC_Split);
1.27 kristaps 605: else if (0 == strcmp(p, "nosplit"))
1.1 kristaps 606: return(MDOC_Nosplit);
607: break;
608:
609: case (MDOC_Bd):
1.27 kristaps 610: if (0 == strcmp(p, "ragged"))
1.1 kristaps 611: return(MDOC_Ragged);
1.27 kristaps 612: else if (0 == strcmp(p, "unfilled"))
1.1 kristaps 613: return(MDOC_Unfilled);
1.27 kristaps 614: else if (0 == strcmp(p, "filled"))
1.1 kristaps 615: return(MDOC_Filled);
1.27 kristaps 616: else if (0 == strcmp(p, "literal"))
1.1 kristaps 617: return(MDOC_Literal);
1.27 kristaps 618: else if (0 == strcmp(p, "file"))
1.1 kristaps 619: return(MDOC_File);
1.27 kristaps 620: else if (0 == strcmp(p, "offset"))
1.1 kristaps 621: return(MDOC_Offset);
1.27 kristaps 622: else if (0 == strcmp(p, "compact"))
1.1 kristaps 623: return(MDOC_Compact);
1.28 kristaps 624: else if (0 == strcmp(p, "centered"))
625: return(MDOC_Centred);
1.1 kristaps 626: break;
627:
628: case (MDOC_Bf):
1.27 kristaps 629: if (0 == strcmp(p, "emphasis"))
1.1 kristaps 630: return(MDOC_Emphasis);
1.27 kristaps 631: else if (0 == strcmp(p, "literal"))
1.1 kristaps 632: return(MDOC_Literal);
1.27 kristaps 633: else if (0 == strcmp(p, "symbolic"))
1.1 kristaps 634: return(MDOC_Symbolic);
635: break;
636:
637: case (MDOC_Bk):
1.27 kristaps 638: if (0 == strcmp(p, "words"))
1.1 kristaps 639: return(MDOC_Words);
640: break;
641:
642: case (MDOC_Bl):
1.27 kristaps 643: if (0 == strcmp(p, "bullet"))
1.1 kristaps 644: return(MDOC_Bullet);
1.27 kristaps 645: else if (0 == strcmp(p, "dash"))
1.1 kristaps 646: return(MDOC_Dash);
1.27 kristaps 647: else if (0 == strcmp(p, "hyphen"))
1.1 kristaps 648: return(MDOC_Hyphen);
1.27 kristaps 649: else if (0 == strcmp(p, "item"))
1.1 kristaps 650: return(MDOC_Item);
1.27 kristaps 651: else if (0 == strcmp(p, "enum"))
1.1 kristaps 652: return(MDOC_Enum);
1.27 kristaps 653: else if (0 == strcmp(p, "tag"))
1.1 kristaps 654: return(MDOC_Tag);
1.27 kristaps 655: else if (0 == strcmp(p, "diag"))
1.1 kristaps 656: return(MDOC_Diag);
1.27 kristaps 657: else if (0 == strcmp(p, "hang"))
1.1 kristaps 658: return(MDOC_Hang);
1.27 kristaps 659: else if (0 == strcmp(p, "ohang"))
1.1 kristaps 660: return(MDOC_Ohang);
1.27 kristaps 661: else if (0 == strcmp(p, "inset"))
1.1 kristaps 662: return(MDOC_Inset);
1.27 kristaps 663: else if (0 == strcmp(p, "column"))
1.1 kristaps 664: return(MDOC_Column);
1.27 kristaps 665: else if (0 == strcmp(p, "width"))
1.1 kristaps 666: return(MDOC_Width);
1.27 kristaps 667: else if (0 == strcmp(p, "offset"))
1.1 kristaps 668: return(MDOC_Offset);
1.27 kristaps 669: else if (0 == strcmp(p, "compact"))
1.1 kristaps 670: return(MDOC_Compact);
1.27 kristaps 671: else if (0 == strcmp(p, "nested"))
1.1 kristaps 672: return(MDOC_Nested);
673: break;
674:
675: case (MDOC_Rv):
676: /* FALLTHROUGH */
677: case (MDOC_Ex):
1.27 kristaps 678: if (0 == strcmp(p, "std"))
1.1 kristaps 679: return(MDOC_Std);
680: break;
681: default:
682: break;
683: }
684:
685: return(MDOC_ARG_MAX);
686: }
687:
688:
689: static int
1.11 kristaps 690: argv_multi(struct mdoc *m, int line,
1.1 kristaps 691: struct mdoc_argv *v, int *pos, char *buf)
692: {
1.43 kristaps 693: enum margserr ac;
1.1 kristaps 694: char *p;
695:
696: for (v->sz = 0; ; v->sz++) {
697: if ('-' == buf[*pos])
698: break;
1.43 kristaps 699: ac = args(m, line, pos, buf, 0, &p);
700: if (ARGS_ERROR == ac)
1.1 kristaps 701: return(0);
1.43 kristaps 702: else if (ARGS_EOLN == ac)
1.1 kristaps 703: break;
704:
1.31 kristaps 705: if (0 == v->sz % MULTI_STEP)
706: v->value = mandoc_realloc(v->value,
1.1 kristaps 707: (v->sz + MULTI_STEP) * sizeof(char *));
1.31 kristaps 708:
709: v->value[(int)v->sz] = mandoc_strdup(p);
1.1 kristaps 710: }
711:
1.7 kristaps 712: return(1);
1.1 kristaps 713: }
714:
715:
716: static int
1.11 kristaps 717: argv_opt_single(struct mdoc *m, int line,
1.1 kristaps 718: struct mdoc_argv *v, int *pos, char *buf)
719: {
1.43 kristaps 720: enum margserr ac;
1.1 kristaps 721: char *p;
722:
723: if ('-' == buf[*pos])
724: return(1);
725:
1.43 kristaps 726: ac = args(m, line, pos, buf, 0, &p);
727: if (ARGS_ERROR == ac)
1.1 kristaps 728: return(0);
1.43 kristaps 729: if (ARGS_EOLN == ac)
1.1 kristaps 730: return(1);
731:
732: v->sz = 1;
1.31 kristaps 733: v->value = mandoc_malloc(sizeof(char *));
734: v->value[0] = mandoc_strdup(p);
1.2 kristaps 735:
1.1 kristaps 736: return(1);
737: }
738:
739:
740: /*
741: * Parse a single, mandatory value from the stream.
742: */
743: static int
1.11 kristaps 744: argv_single(struct mdoc *m, int line,
1.1 kristaps 745: struct mdoc_argv *v, int *pos, char *buf)
746: {
1.43 kristaps 747: int ppos;
748: enum margserr ac;
1.1 kristaps 749: char *p;
750:
751: ppos = *pos;
752:
1.43 kristaps 753: ac = args(m, line, pos, buf, 0, &p);
754: if (ARGS_ERROR == ac)
1.1 kristaps 755: return(0);
1.43 kristaps 756: if (ARGS_EOLN == ac)
1.11 kristaps 757: return(mdoc_perr(m, line, ppos, EARGVAL));
1.1 kristaps 758:
759: v->sz = 1;
1.31 kristaps 760: v->value = mandoc_malloc(sizeof(char *));
761: v->value[0] = mandoc_strdup(p);
1.2 kristaps 762:
1.1 kristaps 763: return(1);
764: }
765:
766:
767: /*
768: * Determine rules for parsing arguments. Arguments can either accept
769: * no parameters, an optional single parameter, one parameter, or
770: * multiple parameters.
771: */
772: static int
773: argv(struct mdoc *mdoc, int line,
774: struct mdoc_argv *v, int *pos, char *buf)
775: {
776:
777: v->sz = 0;
778: v->value = NULL;
779:
780: switch (mdoc_argvflags[v->arg]) {
781: case (ARGV_SINGLE):
782: return(argv_single(mdoc, line, v, pos, buf));
783: case (ARGV_MULTI):
784: return(argv_multi(mdoc, line, v, pos, buf));
785: case (ARGV_OPT_SINGLE):
786: return(argv_opt_single(mdoc, line, v, pos, buf));
787: default:
788: /* ARGV_NONE */
789: break;
790: }
791:
792: return(1);
793: }
CVSweb