Annotation of src/usr.bin/mandoc/mdoc_argv.c, Revision 1.33
1.33 ! schwarze 1: /* $Id: mdoc_argv.c,v 1.32 2010/07/13 01:09:13 schwarze Exp $ */
1.1 kristaps 2: /*
1.32 schwarze 3: * Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
1.1 kristaps 4: *
5: * Permission to use, copy, modify, and distribute this software for any
1.2 schwarze 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: *
1.2 schwarze 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:
1.29 schwarze 25: #include "mandoc.h"
1.1 kristaps 26: #include "libmdoc.h"
1.19 schwarze 27: #include "libmandoc.h"
1.1 kristaps 28:
29: /*
30: * Routines to parse arguments of macros. Arguments follow the syntax
31: * of `-arg [val [valN...]]'. Arguments come in all types: quoted
32: * arguments, multiple arguments per value, no-value arguments, etc.
33: *
34: * There's no limit to the number or arguments that may be allocated.
35: */
36:
37: #define ARGV_NONE (1 << 0)
38: #define ARGV_SINGLE (1 << 1)
39: #define ARGV_MULTI (1 << 2)
40: #define ARGV_OPT_SINGLE (1 << 3)
41:
42: #define MULTI_STEP 5
43:
1.33 ! schwarze 44: static enum mdocargt argv_a2arg(enum mdoct, const char *);
1.24 schwarze 45: static enum margserr args(struct mdoc *, int, int *,
1.1 kristaps 46: char *, int, char **);
47: static int argv(struct mdoc *, int,
48: struct mdoc_argv *, int *, char *);
49: static int argv_single(struct mdoc *, int,
50: struct mdoc_argv *, int *, char *);
51: static int argv_opt_single(struct mdoc *, int,
52: struct mdoc_argv *, int *, char *);
53: static int argv_multi(struct mdoc *, int,
54: struct mdoc_argv *, int *, char *);
55:
56: /* Per-argument flags. */
57:
58: static int mdoc_argvflags[MDOC_ARG_MAX] = {
59: ARGV_NONE, /* MDOC_Split */
60: ARGV_NONE, /* MDOC_Nosplit */
61: ARGV_NONE, /* MDOC_Ragged */
62: ARGV_NONE, /* MDOC_Unfilled */
63: ARGV_NONE, /* MDOC_Literal */
1.17 schwarze 64: ARGV_SINGLE, /* MDOC_File */
1.15 schwarze 65: ARGV_OPT_SINGLE, /* MDOC_Offset */
1.1 kristaps 66: ARGV_NONE, /* MDOC_Bullet */
67: ARGV_NONE, /* MDOC_Dash */
68: ARGV_NONE, /* MDOC_Hyphen */
69: ARGV_NONE, /* MDOC_Item */
70: ARGV_NONE, /* MDOC_Enum */
71: ARGV_NONE, /* MDOC_Tag */
72: ARGV_NONE, /* MDOC_Diag */
73: ARGV_NONE, /* MDOC_Hang */
74: ARGV_NONE, /* MDOC_Ohang */
75: ARGV_NONE, /* MDOC_Inset */
76: ARGV_MULTI, /* MDOC_Column */
77: ARGV_SINGLE, /* MDOC_Width */
78: ARGV_NONE, /* MDOC_Compact */
1.14 schwarze 79: ARGV_NONE, /* MDOC_Std */
1.1 kristaps 80: ARGV_NONE, /* MDOC_Filled */
81: ARGV_NONE, /* MDOC_Words */
82: ARGV_NONE, /* MDOC_Emphasis */
83: ARGV_NONE, /* MDOC_Symbolic */
84: ARGV_NONE /* MDOC_Symbolic */
85: };
86:
87: static int mdoc_argflags[MDOC_MAX] = {
1.3 schwarze 88: 0, /* Ap */
1.1 kristaps 89: 0, /* Dd */
90: 0, /* Dt */
91: 0, /* Os */
1.12 schwarze 92: 0, /* Sh */
93: 0, /* Ss */
1.1 kristaps 94: ARGS_DELIM, /* Pp */
95: ARGS_DELIM, /* D1 */
1.12 schwarze 96: ARGS_DELIM, /* Dl */
1.1 kristaps 97: 0, /* Bd */
98: 0, /* Ed */
1.12 schwarze 99: 0, /* Bl */
1.1 kristaps 100: 0, /* El */
101: 0, /* It */
102: ARGS_DELIM, /* Ad */
103: ARGS_DELIM, /* An */
1.12 schwarze 104: ARGS_DELIM, /* Ar */
105: 0, /* Cd */
1.1 kristaps 106: ARGS_DELIM, /* Cm */
107: ARGS_DELIM, /* Dv */
108: ARGS_DELIM, /* Er */
109: ARGS_DELIM, /* Ev */
110: 0, /* Ex */
1.12 schwarze 111: ARGS_DELIM, /* Fa */
1.1 kristaps 112: 0, /* Fd */
113: ARGS_DELIM, /* Fl */
1.12 schwarze 114: ARGS_DELIM, /* Fn */
115: ARGS_DELIM, /* Ft */
1.1 kristaps 116: ARGS_DELIM, /* Ic */
117: 0, /* In */
1.12 schwarze 118: ARGS_DELIM, /* Li */
119: 0, /* Nd */
1.1 kristaps 120: ARGS_DELIM, /* Nm */
121: ARGS_DELIM, /* Op */
122: 0, /* Ot */
123: ARGS_DELIM, /* Pa */
124: 0, /* Rv */
1.12 schwarze 125: ARGS_DELIM, /* St */
1.1 kristaps 126: ARGS_DELIM, /* Va */
127: ARGS_DELIM, /* Vt */
128: ARGS_DELIM, /* Xr */
1.12 schwarze 129: 0, /* %A */
130: 0, /* %B */
131: 0, /* %D */
132: 0, /* %I */
133: 0, /* %J */
134: 0, /* %N */
135: 0, /* %O */
136: 0, /* %P */
137: 0, /* %R */
138: 0, /* %T */
139: 0, /* %V */
1.1 kristaps 140: ARGS_DELIM, /* Ac */
141: 0, /* Ao */
142: ARGS_DELIM, /* Aq */
143: ARGS_DELIM, /* At */
144: ARGS_DELIM, /* Bc */
145: 0, /* Bf */
146: 0, /* Bo */
147: ARGS_DELIM, /* Bq */
148: ARGS_DELIM, /* Bsx */
149: ARGS_DELIM, /* Bx */
150: 0, /* Db */
151: ARGS_DELIM, /* Dc */
152: 0, /* Do */
153: ARGS_DELIM, /* Dq */
154: ARGS_DELIM, /* Ec */
155: 0, /* Ef */
156: ARGS_DELIM, /* Em */
157: 0, /* Eo */
158: ARGS_DELIM, /* Fx */
159: ARGS_DELIM, /* Ms */
160: ARGS_DELIM, /* No */
161: ARGS_DELIM, /* Ns */
162: ARGS_DELIM, /* Nx */
163: ARGS_DELIM, /* Ox */
164: ARGS_DELIM, /* Pc */
165: ARGS_DELIM, /* Pf */
166: 0, /* Po */
167: ARGS_DELIM, /* Pq */
168: ARGS_DELIM, /* Qc */
169: ARGS_DELIM, /* Ql */
170: 0, /* Qo */
171: ARGS_DELIM, /* Qq */
172: 0, /* Re */
173: 0, /* Rs */
174: ARGS_DELIM, /* Sc */
175: 0, /* So */
176: ARGS_DELIM, /* Sq */
177: 0, /* Sm */
178: ARGS_DELIM, /* Sx */
1.12 schwarze 179: ARGS_DELIM, /* Sy */
1.1 kristaps 180: ARGS_DELIM, /* Tn */
181: ARGS_DELIM, /* Ux */
182: ARGS_DELIM, /* Xc */
183: 0, /* Xo */
1.12 schwarze 184: 0, /* Fo */
1.1 kristaps 185: 0, /* Fc */
186: 0, /* Oo */
187: ARGS_DELIM, /* Oc */
188: 0, /* Bk */
189: 0, /* Ek */
190: 0, /* Bt */
191: 0, /* Hf */
192: 0, /* Fr */
193: 0, /* Ud */
194: 0, /* Lb */
195: ARGS_DELIM, /* Lp */
1.12 schwarze 196: ARGS_DELIM, /* Lk */
197: ARGS_DELIM, /* Mt */
1.1 kristaps 198: ARGS_DELIM, /* Brq */
199: 0, /* Bro */
200: ARGS_DELIM, /* Brc */
1.12 schwarze 201: 0, /* %C */
1.1 kristaps 202: 0, /* Es */
203: 0, /* En */
204: 0, /* Dx */
1.12 schwarze 205: 0, /* %Q */
1.10 schwarze 206: 0, /* br */
207: 0, /* sp */
1.18 schwarze 208: 0, /* %U */
1.30 schwarze 209: 0, /* Ta */
1.1 kristaps 210: };
211:
212:
213: /*
214: * Parse an argument from line text. This comes in the form of -key
215: * [value0...], which may either have a single mandatory value, at least
216: * one mandatory value, an optional single value, or no value.
217: */
1.24 schwarze 218: enum margverr
1.22 schwarze 219: mdoc_argv(struct mdoc *m, int line, enum mdoct tok,
1.1 kristaps 220: struct mdoc_arg **v, int *pos, char *buf)
221: {
222: char *p, sv;
223: struct mdoc_argv tmp;
224: struct mdoc_arg *arg;
225:
1.30 schwarze 226: if ('\0' == buf[*pos])
1.1 kristaps 227: return(ARGV_EOLN);
228:
229: assert(' ' != buf[*pos]);
230:
231: /* Parse through to the first unescaped space. */
232:
233: p = &buf[++(*pos)];
234:
235: assert(*pos > 0);
236:
237: /* LINTED */
238: while (buf[*pos]) {
239: if (' ' == buf[*pos])
240: if ('\\' != buf[*pos - 1])
241: break;
242: (*pos)++;
243: }
244:
245: /* XXX - save zeroed byte, if not an argument. */
246:
1.30 schwarze 247: sv = '\0';
1.1 kristaps 248: if (buf[*pos]) {
249: sv = buf[*pos];
1.30 schwarze 250: buf[(*pos)++] = '\0';
1.1 kristaps 251: }
252:
253: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
254: tmp.line = line;
255: tmp.pos = *pos;
256:
257: /* See if our token accepts the argument. */
258:
259: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
260: /* XXX - restore saved zeroed byte. */
261: if (sv)
262: buf[*pos - 1] = sv;
263: return(ARGV_WORD);
264: }
265:
266: while (buf[*pos] && ' ' == buf[*pos])
267: (*pos)++;
268:
1.6 schwarze 269: if ( ! argv(m, line, &tmp, pos, buf))
1.1 kristaps 270: return(ARGV_ERROR);
271:
1.19 schwarze 272: if (NULL == (arg = *v))
273: arg = *v = mandoc_calloc(1, sizeof(struct mdoc_arg));
1.1 kristaps 274:
275: arg->argc++;
1.19 schwarze 276: arg->argv = mandoc_realloc
277: (arg->argv, arg->argc * sizeof(struct mdoc_argv));
1.1 kristaps 278:
279: (void)memcpy(&arg->argv[(int)arg->argc - 1],
280: &tmp, sizeof(struct mdoc_argv));
281:
282: return(ARGV_ARG);
283: }
284:
285:
286: void
287: mdoc_argv_free(struct mdoc_arg *p)
288: {
1.23 schwarze 289: int i;
1.1 kristaps 290:
291: if (NULL == p)
292: return;
293:
294: if (p->refcnt) {
295: --(p->refcnt);
296: if (p->refcnt)
297: return;
298: }
299: assert(p->argc);
300:
1.24 schwarze 301: for (i = (int)p->argc - 1; i >= 0; i--)
1.23 schwarze 302: mdoc_argn_free(p, i);
303:
304: free(p->argv);
305: free(p);
306: }
307:
308:
309: void
310: mdoc_argn_free(struct mdoc_arg *p, int iarg)
311: {
1.33 ! schwarze 312: struct mdoc_argv *arg;
1.23 schwarze 313: int j;
1.1 kristaps 314:
1.33 ! schwarze 315: arg = &p->argv[iarg];
! 316:
1.23 schwarze 317: if (arg->sz && arg->value) {
1.24 schwarze 318: for (j = (int)arg->sz - 1; j >= 0; j--)
1.23 schwarze 319: free(arg->value[j]);
320: free(arg->value);
1.1 kristaps 321: }
322:
1.23 schwarze 323: for (--p->argc; iarg < (int)p->argc; iarg++)
324: p->argv[iarg] = p->argv[iarg+1];
1.1 kristaps 325: }
326:
327:
1.24 schwarze 328: enum margserr
1.13 schwarze 329: mdoc_zargs(struct mdoc *m, int line, int *pos,
330: char *buf, int flags, char **v)
1.12 schwarze 331: {
332:
1.13 schwarze 333: return(args(m, line, pos, buf, flags, v));
1.12 schwarze 334: }
335:
336:
1.24 schwarze 337: enum margserr
1.22 schwarze 338: mdoc_args(struct mdoc *m, int line, int *pos,
339: char *buf, enum mdoct tok, char **v)
1.1 kristaps 340: {
1.30 schwarze 341: int fl;
1.1 kristaps 342: struct mdoc_node *n;
343:
1.22 schwarze 344: fl = mdoc_argflags[tok];
1.1 kristaps 345:
1.12 schwarze 346: if (MDOC_It != tok)
347: return(args(m, line, pos, buf, fl, v));
348:
1.30 schwarze 349: /*
350: * We know that we're in an `It', so it's reasonable to expect
351: * us to be sitting in a `Bl'. Someday this may not be the case
352: * (if we allow random `It's sitting out there), so provide a
353: * safe fall-back into the default behaviour.
1.1 kristaps 354: */
355:
1.12 schwarze 356: for (n = m->last; n; n = n->parent)
1.30 schwarze 357: if (MDOC_Bl == n->tok)
1.12 schwarze 358: break;
1.1 kristaps 359:
1.32 schwarze 360: assert(n->data.Bl);
361: if (n && LIST_column == n->data.Bl->type) {
1.12 schwarze 362: fl |= ARGS_TABSEP;
363: fl &= ~ARGS_DELIM;
1.1 kristaps 364: }
365:
1.8 schwarze 366: return(args(m, line, pos, buf, fl, v));
1.1 kristaps 367: }
368:
369:
1.24 schwarze 370: static enum margserr
1.12 schwarze 371: args(struct mdoc *m, int line, int *pos,
1.11 schwarze 372: char *buf, int fl, char **v)
1.1 kristaps 373: {
1.30 schwarze 374: int i;
375: char *p, *pp;
376: enum margserr rc;
377: enum mdelim d;
1.1 kristaps 378:
1.13 schwarze 379: /*
380: * Parse out the terms (like `val' in `.Xx -arg val' or simply
381: * `.Xx val'), which can have all sorts of properties:
382: *
383: * ARGS_DELIM: use special handling if encountering trailing
384: * delimiters in the form of [[::delim::][ ]+]+.
385: *
386: * ARGS_NOWARN: don't post warnings. This is only used when
387: * re-parsing delimiters, as the warnings have already been
388: * posted.
389: *
390: * ARGS_TABSEP: use special handling for tab/`Ta' separated
391: * phrases like in `Bl -column'.
392: */
393:
1.12 schwarze 394: assert(' ' != buf[*pos]);
1.1 kristaps 395:
1.28 schwarze 396: if ('\0' == buf[*pos]) {
397: if (MDOC_PPHRASE & m->flags)
398: return(ARGS_EOLN);
399: /*
400: * If we're not in a partial phrase and the flag for
401: * being a phrase literal is still set, the punctuation
402: * is unterminated.
403: */
404: if (MDOC_PHRASELIT & m->flags)
1.29 schwarze 405: if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_BADQUOTE))
1.28 schwarze 406: return(ARGS_ERROR);
407:
408: m->flags &= ~MDOC_PHRASELIT;
1.1 kristaps 409: return(ARGS_EOLN);
1.28 schwarze 410: }
1.1 kristaps 411:
412: /*
1.25 schwarze 413: * If the first character is a closing delimiter and we're to
414: * look for delimited strings, then pass down the buffer seeing
415: * if it follows the pattern of [[::delim::][ ]+]+. Note that
416: * we ONLY care about closing delimiters.
1.1 kristaps 417: */
418:
1.27 schwarze 419: if ((fl & ARGS_DELIM) && DELIM_CLOSE == mdoc_iscdelim(buf[*pos])) {
1.1 kristaps 420: for (i = *pos; buf[i]; ) {
1.30 schwarze 421: d = mdoc_iscdelim(buf[i]);
1.27 schwarze 422: if (DELIM_NONE == d || DELIM_OPEN == d)
1.1 kristaps 423: break;
424: i++;
1.25 schwarze 425: if ('\0' == buf[i] || ' ' != buf[i])
1.1 kristaps 426: break;
427: i++;
428: while (buf[i] && ' ' == buf[i])
429: i++;
430: }
1.12 schwarze 431:
1.25 schwarze 432: if ('\0' == buf[i]) {
1.1 kristaps 433: *v = &buf[*pos];
1.30 schwarze 434: if (i && ' ' != buf[i - 1])
1.13 schwarze 435: return(ARGS_PUNCT);
436: if (ARGS_NOWARN & fl)
437: return(ARGS_PUNCT);
1.29 schwarze 438: if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE))
1.13 schwarze 439: return(ARGS_ERROR);
1.1 kristaps 440: return(ARGS_PUNCT);
441: }
442: }
443:
1.12 schwarze 444: *v = &buf[*pos];
1.1 kristaps 445:
1.12 schwarze 446: /*
447: * First handle TABSEP items, restricted to `Bl -column'. This
448: * ignores conventional token parsing and instead uses tabs or
449: * `Ta' macros to separate phrases. Phrases are parsed again
450: * for arguments at a later phase.
451: */
452:
453: if (ARGS_TABSEP & fl) {
454: /* Scan ahead to tab (can't be escaped). */
455: p = strchr(*v, '\t');
1.28 schwarze 456: pp = NULL;
1.12 schwarze 457:
458: /* Scan ahead to unescaped `Ta'. */
1.28 schwarze 459: if ( ! (MDOC_PHRASELIT & m->flags))
460: for (pp = *v; ; pp++) {
461: if (NULL == (pp = strstr(pp, "Ta")))
462: break;
463: if (pp > *v && ' ' != *(pp - 1))
464: continue;
1.30 schwarze 465: if (' ' == *(pp + 2) || '\0' == *(pp + 2))
1.28 schwarze 466: break;
467: }
1.1 kristaps 468:
1.24 schwarze 469: /* By default, assume a phrase. */
470: rc = ARGS_PHRASE;
471:
1.1 kristaps 472: /*
1.12 schwarze 473: * Adjust new-buffer position to be beyond delimiter
474: * mark (e.g., Ta -> end + 2).
1.1 kristaps 475: */
1.12 schwarze 476: if (p && pp) {
477: *pos += pp < p ? 2 : 1;
1.24 schwarze 478: rc = pp < p ? ARGS_PHRASE : ARGS_PPHRASE;
1.12 schwarze 479: p = pp < p ? pp : p;
480: } else if (p && ! pp) {
1.24 schwarze 481: rc = ARGS_PPHRASE;
1.12 schwarze 482: *pos += 1;
483: } else if (pp && ! p) {
484: p = pp;
485: *pos += 2;
1.25 schwarze 486: } else {
487: rc = ARGS_PEND;
1.12 schwarze 488: p = strchr(*v, 0);
1.25 schwarze 489: }
1.1 kristaps 490:
1.12 schwarze 491: /* Whitespace check for eoln case... */
1.30 schwarze 492: if ('\0' == *p && ' ' == *(p - 1) && ! (ARGS_NOWARN & fl))
1.29 schwarze 493: if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE))
1.12 schwarze 494: return(ARGS_ERROR);
495:
496: *pos += (int)(p - *v);
497:
498: /* Strip delimiter's preceding whitespace. */
499: pp = p - 1;
500: while (pp > *v && ' ' == *pp) {
501: if (pp > *v && '\\' == *(pp - 1))
502: break;
503: pp--;
504: }
505: *(pp + 1) = 0;
1.1 kristaps 506:
1.12 schwarze 507: /* Strip delimiter's proceeding whitespace. */
508: for (pp = &buf[*pos]; ' ' == *pp; pp++, (*pos)++)
509: /* Skip ahead. */ ;
1.1 kristaps 510:
1.24 schwarze 511: return(rc);
1.12 schwarze 512: }
1.1 kristaps 513:
1.12 schwarze 514: /*
515: * Process a quoted literal. A quote begins with a double-quote
516: * and ends with a double-quote NOT preceded by a double-quote.
517: * Whitespace is NOT involved in literal termination.
518: */
1.1 kristaps 519:
1.28 schwarze 520: if (MDOC_PHRASELIT & m->flags || '\"' == buf[*pos]) {
521: if ( ! (MDOC_PHRASELIT & m->flags))
522: *v = &buf[++(*pos)];
523:
524: if (MDOC_PPHRASE & m->flags)
525: m->flags |= MDOC_PHRASELIT;
1.1 kristaps 526:
1.12 schwarze 527: for ( ; buf[*pos]; (*pos)++) {
528: if ('\"' != buf[*pos])
529: continue;
530: if ('\"' != buf[*pos + 1])
531: break;
532: (*pos)++;
533: }
1.1 kristaps 534:
1.28 schwarze 535: if ('\0' == buf[*pos]) {
536: if (ARGS_NOWARN & fl || MDOC_PPHRASE & m->flags)
1.13 schwarze 537: return(ARGS_QWORD);
1.29 schwarze 538: if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_BADQUOTE))
1.12 schwarze 539: return(ARGS_ERROR);
540: return(ARGS_QWORD);
541: }
1.1 kristaps 542:
1.28 schwarze 543: m->flags &= ~MDOC_PHRASELIT;
544: buf[(*pos)++] = '\0';
1.1 kristaps 545:
1.28 schwarze 546: if ('\0' == buf[*pos])
1.12 schwarze 547: return(ARGS_QWORD);
1.1 kristaps 548:
1.12 schwarze 549: while (' ' == buf[*pos])
550: (*pos)++;
1.1 kristaps 551:
1.13 schwarze 552: if (0 == buf[*pos] && ! (ARGS_NOWARN & fl))
1.29 schwarze 553: if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE))
1.12 schwarze 554: return(ARGS_ERROR);
1.1 kristaps 555:
1.12 schwarze 556: return(ARGS_QWORD);
1.1 kristaps 557: }
558:
1.12 schwarze 559: /*
560: * A non-quoted term progresses until either the end of line or
561: * a non-escaped whitespace.
1.1 kristaps 562: */
563:
1.12 schwarze 564: for ( ; buf[*pos]; (*pos)++)
1.30 schwarze 565: if (*pos && ' ' == buf[*pos] && '\\' != buf[*pos - 1])
1.12 schwarze 566: break;
1.1 kristaps 567:
1.28 schwarze 568: if ('\0' == buf[*pos])
1.12 schwarze 569: return(ARGS_WORD);
1.1 kristaps 570:
1.28 schwarze 571: buf[(*pos)++] = '\0';
1.1 kristaps 572:
1.12 schwarze 573: while (' ' == buf[*pos])
1.1 kristaps 574: (*pos)++;
575:
1.28 schwarze 576: if ('\0' == buf[*pos] && ! (ARGS_NOWARN & fl))
1.29 schwarze 577: if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE))
1.12 schwarze 578: return(ARGS_ERROR);
1.1 kristaps 579:
1.12 schwarze 580: return(ARGS_WORD);
1.1 kristaps 581: }
582:
583:
1.33 ! schwarze 584: static enum mdocargt
1.22 schwarze 585: argv_a2arg(enum mdoct tok, const char *p)
1.1 kristaps 586: {
587:
588: /*
589: * Parse an argument identifier from its text. XXX - this
590: * should really be table-driven to clarify the code.
591: *
592: * If you add an argument to the list, make sure that you
593: * register it here with its one or more macros!
594: */
595:
596: switch (tok) {
597: case (MDOC_An):
1.16 schwarze 598: if (0 == strcmp(p, "split"))
1.1 kristaps 599: return(MDOC_Split);
1.16 schwarze 600: else if (0 == strcmp(p, "nosplit"))
1.1 kristaps 601: return(MDOC_Nosplit);
602: break;
603:
604: case (MDOC_Bd):
1.16 schwarze 605: if (0 == strcmp(p, "ragged"))
1.1 kristaps 606: return(MDOC_Ragged);
1.16 schwarze 607: else if (0 == strcmp(p, "unfilled"))
1.1 kristaps 608: return(MDOC_Unfilled);
1.16 schwarze 609: else if (0 == strcmp(p, "filled"))
1.1 kristaps 610: return(MDOC_Filled);
1.16 schwarze 611: else if (0 == strcmp(p, "literal"))
1.1 kristaps 612: return(MDOC_Literal);
1.16 schwarze 613: else if (0 == strcmp(p, "file"))
1.1 kristaps 614: return(MDOC_File);
1.16 schwarze 615: else if (0 == strcmp(p, "offset"))
1.1 kristaps 616: return(MDOC_Offset);
1.16 schwarze 617: else if (0 == strcmp(p, "compact"))
1.1 kristaps 618: return(MDOC_Compact);
1.17 schwarze 619: else if (0 == strcmp(p, "centered"))
620: return(MDOC_Centred);
1.1 kristaps 621: break;
622:
623: case (MDOC_Bf):
1.16 schwarze 624: if (0 == strcmp(p, "emphasis"))
1.1 kristaps 625: return(MDOC_Emphasis);
1.16 schwarze 626: else if (0 == strcmp(p, "literal"))
1.1 kristaps 627: return(MDOC_Literal);
1.16 schwarze 628: else if (0 == strcmp(p, "symbolic"))
1.1 kristaps 629: return(MDOC_Symbolic);
630: break;
631:
632: case (MDOC_Bk):
1.16 schwarze 633: if (0 == strcmp(p, "words"))
1.1 kristaps 634: return(MDOC_Words);
635: break;
636:
637: case (MDOC_Bl):
1.16 schwarze 638: if (0 == strcmp(p, "bullet"))
1.1 kristaps 639: return(MDOC_Bullet);
1.16 schwarze 640: else if (0 == strcmp(p, "dash"))
1.1 kristaps 641: return(MDOC_Dash);
1.16 schwarze 642: else if (0 == strcmp(p, "hyphen"))
1.1 kristaps 643: return(MDOC_Hyphen);
1.16 schwarze 644: else if (0 == strcmp(p, "item"))
1.1 kristaps 645: return(MDOC_Item);
1.16 schwarze 646: else if (0 == strcmp(p, "enum"))
1.1 kristaps 647: return(MDOC_Enum);
1.16 schwarze 648: else if (0 == strcmp(p, "tag"))
1.1 kristaps 649: return(MDOC_Tag);
1.16 schwarze 650: else if (0 == strcmp(p, "diag"))
1.1 kristaps 651: return(MDOC_Diag);
1.16 schwarze 652: else if (0 == strcmp(p, "hang"))
1.1 kristaps 653: return(MDOC_Hang);
1.16 schwarze 654: else if (0 == strcmp(p, "ohang"))
1.1 kristaps 655: return(MDOC_Ohang);
1.16 schwarze 656: else if (0 == strcmp(p, "inset"))
1.1 kristaps 657: return(MDOC_Inset);
1.16 schwarze 658: else if (0 == strcmp(p, "column"))
1.1 kristaps 659: return(MDOC_Column);
1.16 schwarze 660: else if (0 == strcmp(p, "width"))
1.1 kristaps 661: return(MDOC_Width);
1.16 schwarze 662: else if (0 == strcmp(p, "offset"))
1.1 kristaps 663: return(MDOC_Offset);
1.16 schwarze 664: else if (0 == strcmp(p, "compact"))
1.1 kristaps 665: return(MDOC_Compact);
1.16 schwarze 666: else if (0 == strcmp(p, "nested"))
1.1 kristaps 667: return(MDOC_Nested);
668: break;
669:
670: case (MDOC_Rv):
671: /* FALLTHROUGH */
672: case (MDOC_Ex):
1.16 schwarze 673: if (0 == strcmp(p, "std"))
1.1 kristaps 674: return(MDOC_Std);
675: break;
676: default:
677: break;
678: }
679:
680: return(MDOC_ARG_MAX);
681: }
682:
683:
684: static int
1.6 schwarze 685: argv_multi(struct mdoc *m, int line,
1.1 kristaps 686: struct mdoc_argv *v, int *pos, char *buf)
687: {
1.24 schwarze 688: enum margserr ac;
1.1 kristaps 689: char *p;
690:
691: for (v->sz = 0; ; v->sz++) {
692: if ('-' == buf[*pos])
693: break;
1.24 schwarze 694: ac = args(m, line, pos, buf, 0, &p);
695: if (ARGS_ERROR == ac)
1.1 kristaps 696: return(0);
1.24 schwarze 697: else if (ARGS_EOLN == ac)
1.1 kristaps 698: break;
699:
1.19 schwarze 700: if (0 == v->sz % MULTI_STEP)
701: v->value = mandoc_realloc(v->value,
1.1 kristaps 702: (v->sz + MULTI_STEP) * sizeof(char *));
1.19 schwarze 703:
704: v->value[(int)v->sz] = mandoc_strdup(p);
1.1 kristaps 705: }
706:
1.4 schwarze 707: return(1);
1.1 kristaps 708: }
709:
710:
711: static int
1.6 schwarze 712: argv_opt_single(struct mdoc *m, int line,
1.1 kristaps 713: struct mdoc_argv *v, int *pos, char *buf)
714: {
1.24 schwarze 715: enum margserr ac;
1.1 kristaps 716: char *p;
717:
718: if ('-' == buf[*pos])
719: return(1);
720:
1.24 schwarze 721: ac = args(m, line, pos, buf, 0, &p);
722: if (ARGS_ERROR == ac)
1.1 kristaps 723: return(0);
1.24 schwarze 724: if (ARGS_EOLN == ac)
1.1 kristaps 725: return(1);
726:
727: v->sz = 1;
1.19 schwarze 728: v->value = mandoc_malloc(sizeof(char *));
729: v->value[0] = mandoc_strdup(p);
1.1 kristaps 730:
731: return(1);
732: }
733:
734:
735: /*
736: * Parse a single, mandatory value from the stream.
737: */
738: static int
1.6 schwarze 739: argv_single(struct mdoc *m, int line,
1.1 kristaps 740: struct mdoc_argv *v, int *pos, char *buf)
741: {
1.24 schwarze 742: int ppos;
743: enum margserr ac;
1.1 kristaps 744: char *p;
745:
746: ppos = *pos;
747:
1.24 schwarze 748: ac = args(m, line, pos, buf, 0, &p);
1.29 schwarze 749: if (ARGS_EOLN == ac) {
750: mdoc_pmsg(m, line, ppos, MANDOCERR_SYNTARGVCOUNT);
751: return(0);
752: } else if (ARGS_ERROR == ac)
1.1 kristaps 753: return(0);
754:
755: v->sz = 1;
1.19 schwarze 756: v->value = mandoc_malloc(sizeof(char *));
757: v->value[0] = mandoc_strdup(p);
1.1 kristaps 758:
759: return(1);
760: }
761:
762:
763: /*
764: * Determine rules for parsing arguments. Arguments can either accept
765: * no parameters, an optional single parameter, one parameter, or
766: * multiple parameters.
767: */
768: static int
769: argv(struct mdoc *mdoc, int line,
770: struct mdoc_argv *v, int *pos, char *buf)
771: {
772:
773: v->sz = 0;
774: v->value = NULL;
775:
776: switch (mdoc_argvflags[v->arg]) {
777: case (ARGV_SINGLE):
778: return(argv_single(mdoc, line, v, pos, buf));
779: case (ARGV_MULTI):
780: return(argv_multi(mdoc, line, v, pos, buf));
781: case (ARGV_OPT_SINGLE):
782: return(argv_opt_single(mdoc, line, v, pos, buf));
783: default:
784: /* ARGV_NONE */
785: break;
786: }
787:
788: return(1);
789: }
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