Annotation of mandoc/mdoc_argv.c, Revision 1.46
1.46 ! kristaps 1: /* $Id: mdoc_argv.c,v 1.45 2010/05/09 21:06:50 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]) {
! 402: if (ARGS_PPHRASED & fl)
! 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:
1.34 kristaps 424: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos]) > 1) {
1.1 kristaps 425: for (i = *pos; buf[i]; ) {
1.46 ! kristaps 426: if (mdoc_iscdelim(buf[i]) < 2)
1.1 kristaps 427: break;
428: i++;
1.45 kristaps 429: if ('\0' == buf[i] || ' ' != buf[i])
1.1 kristaps 430: break;
431: i++;
432: while (buf[i] && ' ' == buf[i])
433: i++;
434: }
1.17 kristaps 435:
1.45 kristaps 436: if ('\0' == buf[i]) {
1.1 kristaps 437: *v = &buf[*pos];
1.23 kristaps 438: if (' ' != buf[i - 1])
439: return(ARGS_PUNCT);
440: if (ARGS_NOWARN & fl)
441: return(ARGS_PUNCT);
442: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
443: return(ARGS_ERROR);
1.1 kristaps 444: return(ARGS_PUNCT);
445: }
446: }
447:
1.17 kristaps 448: *v = &buf[*pos];
1.1 kristaps 449:
1.17 kristaps 450: /*
451: * First handle TABSEP items, restricted to `Bl -column'. This
452: * ignores conventional token parsing and instead uses tabs or
453: * `Ta' macros to separate phrases. Phrases are parsed again
454: * for arguments at a later phase.
455: */
1.1 kristaps 456:
1.17 kristaps 457: if (ARGS_TABSEP & fl) {
1.20 kristaps 458: /* Scan ahead to tab (can't be escaped). */
1.17 kristaps 459: p = strchr(*v, '\t');
1.46 ! kristaps 460: pp = NULL;
1.17 kristaps 461:
462: /* Scan ahead to unescaped `Ta'. */
1.46 ! kristaps 463: if ( ! (MDOC_PHRASELIT & m->flags))
! 464: for (pp = *v; ; pp++) {
! 465: if (NULL == (pp = strstr(pp, "Ta")))
! 466: break;
! 467: if (pp > *v && ' ' != *(pp - 1))
! 468: continue;
! 469: if (' ' == *(pp + 2) || 0 == *(pp + 2))
! 470: break;
! 471: }
1.17 kristaps 472:
1.42 kristaps 473: /* By default, assume a phrase. */
474: rc = ARGS_PHRASE;
475:
1.21 kristaps 476: /*
477: * Adjust new-buffer position to be beyond delimiter
478: * mark (e.g., Ta -> end + 2).
479: */
1.20 kristaps 480: if (p && pp) {
481: *pos += pp < p ? 2 : 1;
1.42 kristaps 482: rc = pp < p ? ARGS_PHRASE : ARGS_PPHRASE;
1.20 kristaps 483: p = pp < p ? pp : p;
484: } else if (p && ! pp) {
1.42 kristaps 485: rc = ARGS_PPHRASE;
1.20 kristaps 486: *pos += 1;
487: } else if (pp && ! p) {
1.17 kristaps 488: p = pp;
1.20 kristaps 489: *pos += 2;
1.44 kristaps 490: } else {
491: rc = ARGS_PEND;
1.20 kristaps 492: p = strchr(*v, 0);
1.44 kristaps 493: }
1.20 kristaps 494:
1.21 kristaps 495: /* Whitespace check for eoln case... */
1.23 kristaps 496: if (0 == *p && ' ' == *(p - 1) && ! (ARGS_NOWARN & fl))
1.20 kristaps 497: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
498: return(ARGS_ERROR);
499:
500: *pos += (int)(p - *v);
1.17 kristaps 501:
502: /* Strip delimiter's preceding whitespace. */
1.20 kristaps 503: pp = p - 1;
504: while (pp > *v && ' ' == *pp) {
505: if (pp > *v && '\\' == *(pp - 1))
506: break;
507: pp--;
1.17 kristaps 508: }
1.20 kristaps 509: *(pp + 1) = 0;
1.17 kristaps 510:
1.20 kristaps 511: /* Strip delimiter's proceeding whitespace. */
512: for (pp = &buf[*pos]; ' ' == *pp; pp++, (*pos)++)
513: /* Skip ahead. */ ;
1.1 kristaps 514:
1.41 kristaps 515: return(rc);
1.17 kristaps 516: }
1.1 kristaps 517:
1.17 kristaps 518: /*
519: * Process a quoted literal. A quote begins with a double-quote
520: * and ends with a double-quote NOT preceded by a double-quote.
521: * Whitespace is NOT involved in literal termination.
522: */
1.1 kristaps 523:
1.46 ! kristaps 524: if (MDOC_PHRASELIT & m->flags || '\"' == buf[*pos]) {
! 525: if ( ! (MDOC_PHRASELIT & m->flags))
! 526: *v = &buf[++(*pos)];
! 527:
! 528: if (ARGS_PPHRASED & fl)
! 529: m->flags |= MDOC_PHRASELIT;
1.1 kristaps 530:
1.17 kristaps 531: for ( ; buf[*pos]; (*pos)++) {
532: if ('\"' != buf[*pos])
533: continue;
534: if ('\"' != buf[*pos + 1])
535: break;
536: (*pos)++;
537: }
1.1 kristaps 538:
1.46 ! kristaps 539: if ('\0' == buf[*pos]) {
! 540: if (ARGS_NOWARN & fl || ARGS_PPHRASED & fl)
1.23 kristaps 541: return(ARGS_QWORD);
1.18 kristaps 542: if ( ! mdoc_pwarn(m, line, *pos, EQUOTTERM))
543: return(ARGS_ERROR);
544: return(ARGS_QWORD);
1.17 kristaps 545: }
1.1 kristaps 546:
1.46 ! kristaps 547: m->flags &= ~MDOC_PHRASELIT;
! 548: buf[(*pos)++] = '\0';
1.1 kristaps 549:
1.46 ! kristaps 550: if ('\0' == buf[*pos])
1.17 kristaps 551: return(ARGS_QWORD);
1.1 kristaps 552:
1.17 kristaps 553: while (' ' == buf[*pos])
554: (*pos)++;
1.1 kristaps 555:
1.23 kristaps 556: if (0 == buf[*pos] && ! (ARGS_NOWARN & fl))
1.17 kristaps 557: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
558: return(ARGS_ERROR);
1.1 kristaps 559:
1.17 kristaps 560: return(ARGS_QWORD);
1.1 kristaps 561: }
562:
1.17 kristaps 563: /*
564: * A non-quoted term progresses until either the end of line or
565: * a non-escaped whitespace.
1.1 kristaps 566: */
567:
1.17 kristaps 568: for ( ; buf[*pos]; (*pos)++)
569: if (' ' == buf[*pos] && '\\' != buf[*pos - 1])
570: break;
1.1 kristaps 571:
1.46 ! kristaps 572: if ('\0' == buf[*pos])
1.17 kristaps 573: return(ARGS_WORD);
1.1 kristaps 574:
1.46 ! kristaps 575: buf[(*pos)++] = '\0';
1.1 kristaps 576:
1.17 kristaps 577: while (' ' == buf[*pos])
1.1 kristaps 578: (*pos)++;
579:
1.46 ! kristaps 580: if ('\0' == buf[*pos] && ! (ARGS_NOWARN & fl))
1.17 kristaps 581: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
582: return(ARGS_ERROR);
1.1 kristaps 583:
1.17 kristaps 584: return(ARGS_WORD);
1.1 kristaps 585: }
586:
587:
588: static int
1.35 kristaps 589: argv_a2arg(enum mdoct tok, const char *p)
1.1 kristaps 590: {
591:
592: /*
593: * Parse an argument identifier from its text. XXX - this
594: * should really be table-driven to clarify the code.
595: *
596: * If you add an argument to the list, make sure that you
597: * register it here with its one or more macros!
598: */
599:
600: switch (tok) {
601: case (MDOC_An):
1.27 kristaps 602: if (0 == strcmp(p, "split"))
1.1 kristaps 603: return(MDOC_Split);
1.27 kristaps 604: else if (0 == strcmp(p, "nosplit"))
1.1 kristaps 605: return(MDOC_Nosplit);
606: break;
607:
608: case (MDOC_Bd):
1.27 kristaps 609: if (0 == strcmp(p, "ragged"))
1.1 kristaps 610: return(MDOC_Ragged);
1.27 kristaps 611: else if (0 == strcmp(p, "unfilled"))
1.1 kristaps 612: return(MDOC_Unfilled);
1.27 kristaps 613: else if (0 == strcmp(p, "filled"))
1.1 kristaps 614: return(MDOC_Filled);
1.27 kristaps 615: else if (0 == strcmp(p, "literal"))
1.1 kristaps 616: return(MDOC_Literal);
1.27 kristaps 617: else if (0 == strcmp(p, "file"))
1.1 kristaps 618: return(MDOC_File);
1.27 kristaps 619: else if (0 == strcmp(p, "offset"))
1.1 kristaps 620: return(MDOC_Offset);
1.27 kristaps 621: else if (0 == strcmp(p, "compact"))
1.1 kristaps 622: return(MDOC_Compact);
1.28 kristaps 623: else if (0 == strcmp(p, "centered"))
624: return(MDOC_Centred);
1.1 kristaps 625: break;
626:
627: case (MDOC_Bf):
1.27 kristaps 628: if (0 == strcmp(p, "emphasis"))
1.1 kristaps 629: return(MDOC_Emphasis);
1.27 kristaps 630: else if (0 == strcmp(p, "literal"))
1.1 kristaps 631: return(MDOC_Literal);
1.27 kristaps 632: else if (0 == strcmp(p, "symbolic"))
1.1 kristaps 633: return(MDOC_Symbolic);
634: break;
635:
636: case (MDOC_Bk):
1.27 kristaps 637: if (0 == strcmp(p, "words"))
1.1 kristaps 638: return(MDOC_Words);
639: break;
640:
641: case (MDOC_Bl):
1.27 kristaps 642: if (0 == strcmp(p, "bullet"))
1.1 kristaps 643: return(MDOC_Bullet);
1.27 kristaps 644: else if (0 == strcmp(p, "dash"))
1.1 kristaps 645: return(MDOC_Dash);
1.27 kristaps 646: else if (0 == strcmp(p, "hyphen"))
1.1 kristaps 647: return(MDOC_Hyphen);
1.27 kristaps 648: else if (0 == strcmp(p, "item"))
1.1 kristaps 649: return(MDOC_Item);
1.27 kristaps 650: else if (0 == strcmp(p, "enum"))
1.1 kristaps 651: return(MDOC_Enum);
1.27 kristaps 652: else if (0 == strcmp(p, "tag"))
1.1 kristaps 653: return(MDOC_Tag);
1.27 kristaps 654: else if (0 == strcmp(p, "diag"))
1.1 kristaps 655: return(MDOC_Diag);
1.27 kristaps 656: else if (0 == strcmp(p, "hang"))
1.1 kristaps 657: return(MDOC_Hang);
1.27 kristaps 658: else if (0 == strcmp(p, "ohang"))
1.1 kristaps 659: return(MDOC_Ohang);
1.27 kristaps 660: else if (0 == strcmp(p, "inset"))
1.1 kristaps 661: return(MDOC_Inset);
1.27 kristaps 662: else if (0 == strcmp(p, "column"))
1.1 kristaps 663: return(MDOC_Column);
1.27 kristaps 664: else if (0 == strcmp(p, "width"))
1.1 kristaps 665: return(MDOC_Width);
1.27 kristaps 666: else if (0 == strcmp(p, "offset"))
1.1 kristaps 667: return(MDOC_Offset);
1.27 kristaps 668: else if (0 == strcmp(p, "compact"))
1.1 kristaps 669: return(MDOC_Compact);
1.27 kristaps 670: else if (0 == strcmp(p, "nested"))
1.1 kristaps 671: return(MDOC_Nested);
672: break;
673:
674: case (MDOC_Rv):
675: /* FALLTHROUGH */
676: case (MDOC_Ex):
1.27 kristaps 677: if (0 == strcmp(p, "std"))
1.1 kristaps 678: return(MDOC_Std);
679: break;
680: default:
681: break;
682: }
683:
684: return(MDOC_ARG_MAX);
685: }
686:
687:
688: static int
1.11 kristaps 689: argv_multi(struct mdoc *m, int line,
1.1 kristaps 690: struct mdoc_argv *v, int *pos, char *buf)
691: {
1.43 kristaps 692: enum margserr ac;
1.1 kristaps 693: char *p;
694:
695: for (v->sz = 0; ; v->sz++) {
696: if ('-' == buf[*pos])
697: break;
1.43 kristaps 698: ac = args(m, line, pos, buf, 0, &p);
699: if (ARGS_ERROR == ac)
1.1 kristaps 700: return(0);
1.43 kristaps 701: else if (ARGS_EOLN == ac)
1.1 kristaps 702: break;
703:
1.31 kristaps 704: if (0 == v->sz % MULTI_STEP)
705: v->value = mandoc_realloc(v->value,
1.1 kristaps 706: (v->sz + MULTI_STEP) * sizeof(char *));
1.31 kristaps 707:
708: v->value[(int)v->sz] = mandoc_strdup(p);
1.1 kristaps 709: }
710:
1.7 kristaps 711: return(1);
1.1 kristaps 712: }
713:
714:
715: static int
1.11 kristaps 716: argv_opt_single(struct mdoc *m, int line,
1.1 kristaps 717: struct mdoc_argv *v, int *pos, char *buf)
718: {
1.43 kristaps 719: enum margserr ac;
1.1 kristaps 720: char *p;
721:
722: if ('-' == buf[*pos])
723: return(1);
724:
1.43 kristaps 725: ac = args(m, line, pos, buf, 0, &p);
726: if (ARGS_ERROR == ac)
1.1 kristaps 727: return(0);
1.43 kristaps 728: if (ARGS_EOLN == ac)
1.1 kristaps 729: return(1);
730:
731: v->sz = 1;
1.31 kristaps 732: v->value = mandoc_malloc(sizeof(char *));
733: v->value[0] = mandoc_strdup(p);
1.2 kristaps 734:
1.1 kristaps 735: return(1);
736: }
737:
738:
739: /*
740: * Parse a single, mandatory value from the stream.
741: */
742: static int
1.11 kristaps 743: argv_single(struct mdoc *m, int line,
1.1 kristaps 744: struct mdoc_argv *v, int *pos, char *buf)
745: {
1.43 kristaps 746: int ppos;
747: enum margserr ac;
1.1 kristaps 748: char *p;
749:
750: ppos = *pos;
751:
1.43 kristaps 752: ac = args(m, line, pos, buf, 0, &p);
753: if (ARGS_ERROR == ac)
1.1 kristaps 754: return(0);
1.43 kristaps 755: if (ARGS_EOLN == ac)
1.11 kristaps 756: return(mdoc_perr(m, line, ppos, EARGVAL));
1.1 kristaps 757:
758: v->sz = 1;
1.31 kristaps 759: v->value = mandoc_malloc(sizeof(char *));
760: v->value[0] = mandoc_strdup(p);
1.2 kristaps 761:
1.1 kristaps 762: return(1);
763: }
764:
765:
766: /*
767: * Determine rules for parsing arguments. Arguments can either accept
768: * no parameters, an optional single parameter, one parameter, or
769: * multiple parameters.
770: */
771: static int
772: argv(struct mdoc *mdoc, int line,
773: struct mdoc_argv *v, int *pos, char *buf)
774: {
775:
776: v->sz = 0;
777: v->value = NULL;
778:
779: switch (mdoc_argvflags[v->arg]) {
780: case (ARGV_SINGLE):
781: return(argv_single(mdoc, line, v, pos, buf));
782: case (ARGV_MULTI):
783: return(argv_multi(mdoc, line, v, pos, buf));
784: case (ARGV_OPT_SINGLE):
785: return(argv_opt_single(mdoc, line, v, pos, buf));
786: default:
787: /* ARGV_NONE */
788: break;
789: }
790:
791: return(1);
792: }
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