Annotation of mandoc/mdoc_argv.c, Revision 1.52
1.52 ! kristaps 1: /* $Id: mdoc_argv.c,v 1.51 2010/05/31 10:28:04 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:
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 */
1.51 kristaps 213: 0, /* Ta */
1.1 kristaps 214: };
215:
216:
217: /*
218: * Parse an argument from line text. This comes in the form of -key
219: * [value0...], which may either have a single mandatory value, at least
220: * one mandatory value, an optional single value, or no value.
221: */
1.40 kristaps 222: enum margverr
1.35 kristaps 223: mdoc_argv(struct mdoc *m, int line, enum mdoct tok,
1.1 kristaps 224: struct mdoc_arg **v, int *pos, char *buf)
225: {
226: char *p, sv;
227: struct mdoc_argv tmp;
228: struct mdoc_arg *arg;
229:
1.52 ! kristaps 230: if ('\0' == buf[*pos])
1.1 kristaps 231: return(ARGV_EOLN);
232:
233: assert(' ' != buf[*pos]);
234:
235: /* Parse through to the first unescaped space. */
236:
237: p = &buf[++(*pos)];
238:
239: assert(*pos > 0);
240:
241: /* LINTED */
242: while (buf[*pos]) {
243: if (' ' == buf[*pos])
244: if ('\\' != buf[*pos - 1])
245: break;
246: (*pos)++;
247: }
248:
249: /* XXX - save zeroed byte, if not an argument. */
250:
1.52 ! kristaps 251: sv = '\0';
1.1 kristaps 252: if (buf[*pos]) {
253: sv = buf[*pos];
1.52 ! kristaps 254: buf[(*pos)++] = '\0';
1.1 kristaps 255: }
256:
257: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
258: tmp.line = line;
259: tmp.pos = *pos;
260:
261: /* See if our token accepts the argument. */
262:
263: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
264: /* XXX - restore saved zeroed byte. */
265: if (sv)
266: buf[*pos - 1] = sv;
267: return(ARGV_WORD);
268: }
269:
270: while (buf[*pos] && ' ' == buf[*pos])
271: (*pos)++;
272:
1.11 kristaps 273: if ( ! argv(m, line, &tmp, pos, buf))
1.1 kristaps 274: return(ARGV_ERROR);
275:
1.31 kristaps 276: if (NULL == (arg = *v))
1.32 kristaps 277: arg = *v = mandoc_calloc(1, sizeof(struct mdoc_arg));
1.1 kristaps 278:
279: arg->argc++;
1.31 kristaps 280: arg->argv = mandoc_realloc
281: (arg->argv, arg->argc * sizeof(struct mdoc_argv));
1.2 kristaps 282:
1.1 kristaps 283: (void)memcpy(&arg->argv[(int)arg->argc - 1],
284: &tmp, sizeof(struct mdoc_argv));
285:
286: return(ARGV_ARG);
287: }
288:
289:
290: void
291: mdoc_argv_free(struct mdoc_arg *p)
292: {
1.37 kristaps 293: int i;
1.1 kristaps 294:
295: if (NULL == p)
296: return;
297:
298: if (p->refcnt) {
299: --(p->refcnt);
300: if (p->refcnt)
301: return;
302: }
303: assert(p->argc);
304:
1.37 kristaps 305: for (i = (int)p->argc - 1; i >= 0; i--)
306: mdoc_argn_free(p, i);
307:
308: free(p->argv);
309: free(p);
310: }
311:
312:
313: void
314: mdoc_argn_free(struct mdoc_arg *p, int iarg)
315: {
316: struct mdoc_argv *arg = &p->argv[iarg];
317: int j;
1.1 kristaps 318:
1.37 kristaps 319: if (arg->sz && arg->value) {
320: for (j = (int)arg->sz - 1; j >= 0; j--)
321: free(arg->value[j]);
322: free(arg->value);
1.1 kristaps 323: }
324:
1.37 kristaps 325: for (--p->argc; iarg < (int)p->argc; iarg++)
326: p->argv[iarg] = p->argv[iarg+1];
1.1 kristaps 327: }
328:
329:
1.39 kristaps 330: enum margserr
1.23 kristaps 331: mdoc_zargs(struct mdoc *m, int line, int *pos,
332: char *buf, int flags, char **v)
1.19 kristaps 333: {
334:
1.23 kristaps 335: return(args(m, line, pos, buf, flags, v));
1.19 kristaps 336: }
337:
338:
1.39 kristaps 339: enum margserr
1.35 kristaps 340: mdoc_args(struct mdoc *m, int line, int *pos,
341: char *buf, enum mdoct tok, char **v)
1.1 kristaps 342: {
1.50 kristaps 343: int fl;
1.1 kristaps 344: struct mdoc_node *n;
345:
1.35 kristaps 346: fl = mdoc_argflags[tok];
1.1 kristaps 347:
1.17 kristaps 348: if (MDOC_It != tok)
349: return(args(m, line, pos, buf, fl, v));
350:
1.51 kristaps 351: /*
352: * We know that we're in an `It', so it's reasonable to expect
353: * us to be sitting in a `Bl'. Someday this may not be the case
354: * (if we allow random `It's sitting out there), so provide a
355: * safe fall-back into the default behaviour.
356: */
357:
1.17 kristaps 358: for (n = m->last; n; n = n->parent)
1.50 kristaps 359: if (MDOC_Bl == n->tok)
1.17 kristaps 360: break;
1.1 kristaps 361:
1.50 kristaps 362: if (n && LIST_column == n->data.list) {
1.17 kristaps 363: fl |= ARGS_TABSEP;
364: fl &= ~ARGS_DELIM;
1.1 kristaps 365: }
366:
1.11 kristaps 367: return(args(m, line, pos, buf, fl, v));
1.1 kristaps 368: }
369:
370:
1.39 kristaps 371: static enum margserr
1.13 kristaps 372: args(struct mdoc *m, int line, int *pos,
373: char *buf, int fl, char **v)
1.1 kristaps 374: {
1.52 ! kristaps 375: int i;
! 376: char *p, *pp;
! 377: enum margserr rc;
! 378: enum mdelim d;
1.1 kristaps 379:
1.24 kristaps 380: /*
381: * Parse out the terms (like `val' in `.Xx -arg val' or simply
382: * `.Xx val'), which can have all sorts of properties:
383: *
384: * ARGS_DELIM: use special handling if encountering trailing
385: * delimiters in the form of [[::delim::][ ]+]+.
386: *
387: * ARGS_NOWARN: don't post warnings. This is only used when
388: * re-parsing delimiters, as the warnings have already been
389: * posted.
390: *
391: * ARGS_TABSEP: use special handling for tab/`Ta' separated
392: * phrases like in `Bl -column'.
393: */
394:
1.17 kristaps 395: assert(' ' != buf[*pos]);
1.1 kristaps 396:
1.46 kristaps 397: if ('\0' == buf[*pos]) {
1.47 kristaps 398: if (MDOC_PPHRASE & m->flags)
1.46 kristaps 399: return(ARGS_EOLN);
400: /*
401: * If we're not in a partial phrase and the flag for
402: * being a phrase literal is still set, the punctuation
403: * is unterminated.
404: */
405: if (MDOC_PHRASELIT & m->flags)
1.49 kristaps 406: if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_BADQUOTE))
1.46 kristaps 407: return(ARGS_ERROR);
408:
409: m->flags &= ~MDOC_PHRASELIT;
1.1 kristaps 410: return(ARGS_EOLN);
1.46 kristaps 411: }
1.1 kristaps 412:
413: /*
1.45 kristaps 414: * If the first character is a closing delimiter and we're to
415: * look for delimited strings, then pass down the buffer seeing
416: * if it follows the pattern of [[::delim::][ ]+]+. Note that
417: * we ONLY care about closing delimiters.
1.1 kristaps 418: */
419:
1.48 schwarze 420: if ((fl & ARGS_DELIM) && DELIM_CLOSE == mdoc_iscdelim(buf[*pos])) {
1.1 kristaps 421: for (i = *pos; buf[i]; ) {
1.52 ! kristaps 422: d = mdoc_iscdelim(buf[i]);
1.48 schwarze 423: if (DELIM_NONE == d || DELIM_OPEN == d)
1.1 kristaps 424: break;
425: i++;
1.45 kristaps 426: if ('\0' == buf[i] || ' ' != buf[i])
1.1 kristaps 427: break;
428: i++;
429: while (buf[i] && ' ' == buf[i])
430: i++;
431: }
1.17 kristaps 432:
1.45 kristaps 433: if ('\0' == buf[i]) {
1.1 kristaps 434: *v = &buf[*pos];
1.52 ! kristaps 435: if (i && ' ' != buf[i - 1])
1.23 kristaps 436: return(ARGS_PUNCT);
437: if (ARGS_NOWARN & fl)
438: return(ARGS_PUNCT);
1.49 kristaps 439: if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE))
1.23 kristaps 440: return(ARGS_ERROR);
1.1 kristaps 441: return(ARGS_PUNCT);
442: }
443: }
444:
1.17 kristaps 445: *v = &buf[*pos];
1.1 kristaps 446:
1.17 kristaps 447: /*
448: * First handle TABSEP items, restricted to `Bl -column'. This
449: * ignores conventional token parsing and instead uses tabs or
450: * `Ta' macros to separate phrases. Phrases are parsed again
451: * for arguments at a later phase.
452: */
1.1 kristaps 453:
1.17 kristaps 454: if (ARGS_TABSEP & fl) {
1.20 kristaps 455: /* Scan ahead to tab (can't be escaped). */
1.17 kristaps 456: p = strchr(*v, '\t');
1.46 kristaps 457: pp = NULL;
1.17 kristaps 458:
459: /* Scan ahead to unescaped `Ta'. */
1.46 kristaps 460: if ( ! (MDOC_PHRASELIT & m->flags))
461: for (pp = *v; ; pp++) {
462: if (NULL == (pp = strstr(pp, "Ta")))
463: break;
464: if (pp > *v && ' ' != *(pp - 1))
465: continue;
1.51 kristaps 466: if (' ' == *(pp + 2) || '\0' == *(pp + 2))
1.46 kristaps 467: break;
468: }
1.17 kristaps 469:
1.42 kristaps 470: /* By default, assume a phrase. */
471: rc = ARGS_PHRASE;
472:
1.21 kristaps 473: /*
474: * Adjust new-buffer position to be beyond delimiter
475: * mark (e.g., Ta -> end + 2).
476: */
1.20 kristaps 477: if (p && pp) {
478: *pos += pp < p ? 2 : 1;
1.42 kristaps 479: rc = pp < p ? ARGS_PHRASE : ARGS_PPHRASE;
1.20 kristaps 480: p = pp < p ? pp : p;
481: } else if (p && ! pp) {
1.42 kristaps 482: rc = ARGS_PPHRASE;
1.20 kristaps 483: *pos += 1;
484: } else if (pp && ! p) {
1.17 kristaps 485: p = pp;
1.20 kristaps 486: *pos += 2;
1.44 kristaps 487: } else {
488: rc = ARGS_PEND;
1.20 kristaps 489: p = strchr(*v, 0);
1.44 kristaps 490: }
1.20 kristaps 491:
1.21 kristaps 492: /* Whitespace check for eoln case... */
1.52 ! kristaps 493: if ('\0' == *p && ' ' == *(p - 1) && ! (ARGS_NOWARN & fl))
1.49 kristaps 494: if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE))
1.20 kristaps 495: return(ARGS_ERROR);
496:
497: *pos += (int)(p - *v);
1.17 kristaps 498:
499: /* Strip delimiter's preceding whitespace. */
1.20 kristaps 500: pp = p - 1;
501: while (pp > *v && ' ' == *pp) {
502: if (pp > *v && '\\' == *(pp - 1))
503: break;
504: pp--;
1.17 kristaps 505: }
1.20 kristaps 506: *(pp + 1) = 0;
1.17 kristaps 507:
1.20 kristaps 508: /* Strip delimiter's proceeding whitespace. */
509: for (pp = &buf[*pos]; ' ' == *pp; pp++, (*pos)++)
510: /* Skip ahead. */ ;
1.1 kristaps 511:
1.41 kristaps 512: return(rc);
1.17 kristaps 513: }
1.1 kristaps 514:
1.17 kristaps 515: /*
516: * Process a quoted literal. A quote begins with a double-quote
517: * and ends with a double-quote NOT preceded by a double-quote.
518: * Whitespace is NOT involved in literal termination.
519: */
1.1 kristaps 520:
1.46 kristaps 521: if (MDOC_PHRASELIT & m->flags || '\"' == buf[*pos]) {
522: if ( ! (MDOC_PHRASELIT & m->flags))
523: *v = &buf[++(*pos)];
524:
1.47 kristaps 525: if (MDOC_PPHRASE & m->flags)
1.46 kristaps 526: m->flags |= MDOC_PHRASELIT;
1.1 kristaps 527:
1.17 kristaps 528: for ( ; buf[*pos]; (*pos)++) {
529: if ('\"' != buf[*pos])
530: continue;
531: if ('\"' != buf[*pos + 1])
532: break;
533: (*pos)++;
534: }
1.1 kristaps 535:
1.46 kristaps 536: if ('\0' == buf[*pos]) {
1.47 kristaps 537: if (ARGS_NOWARN & fl || MDOC_PPHRASE & m->flags)
1.23 kristaps 538: return(ARGS_QWORD);
1.49 kristaps 539: if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_BADQUOTE))
1.18 kristaps 540: return(ARGS_ERROR);
541: return(ARGS_QWORD);
1.17 kristaps 542: }
1.1 kristaps 543:
1.46 kristaps 544: m->flags &= ~MDOC_PHRASELIT;
545: buf[(*pos)++] = '\0';
1.1 kristaps 546:
1.46 kristaps 547: if ('\0' == buf[*pos])
1.17 kristaps 548: return(ARGS_QWORD);
1.1 kristaps 549:
1.17 kristaps 550: while (' ' == buf[*pos])
551: (*pos)++;
1.1 kristaps 552:
1.23 kristaps 553: if (0 == buf[*pos] && ! (ARGS_NOWARN & fl))
1.49 kristaps 554: if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE))
1.17 kristaps 555: return(ARGS_ERROR);
1.1 kristaps 556:
1.17 kristaps 557: return(ARGS_QWORD);
1.1 kristaps 558: }
559:
1.17 kristaps 560: /*
561: * A non-quoted term progresses until either the end of line or
562: * a non-escaped whitespace.
1.1 kristaps 563: */
564:
1.17 kristaps 565: for ( ; buf[*pos]; (*pos)++)
1.52 ! kristaps 566: if (*pos && ' ' == buf[*pos] && '\\' != buf[*pos - 1])
1.17 kristaps 567: break;
1.1 kristaps 568:
1.46 kristaps 569: if ('\0' == buf[*pos])
1.17 kristaps 570: return(ARGS_WORD);
1.1 kristaps 571:
1.46 kristaps 572: buf[(*pos)++] = '\0';
1.1 kristaps 573:
1.17 kristaps 574: while (' ' == buf[*pos])
1.1 kristaps 575: (*pos)++;
576:
1.46 kristaps 577: if ('\0' == buf[*pos] && ! (ARGS_NOWARN & fl))
1.49 kristaps 578: if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE))
1.17 kristaps 579: return(ARGS_ERROR);
1.1 kristaps 580:
1.17 kristaps 581: return(ARGS_WORD);
1.1 kristaps 582: }
583:
584:
585: static int
1.35 kristaps 586: argv_a2arg(enum mdoct tok, const char *p)
1.1 kristaps 587: {
588:
589: /*
590: * Parse an argument identifier from its text. XXX - this
591: * should really be table-driven to clarify the code.
592: *
593: * If you add an argument to the list, make sure that you
594: * register it here with its one or more macros!
595: */
596:
597: switch (tok) {
598: case (MDOC_An):
1.27 kristaps 599: if (0 == strcmp(p, "split"))
1.1 kristaps 600: return(MDOC_Split);
1.27 kristaps 601: else if (0 == strcmp(p, "nosplit"))
1.1 kristaps 602: return(MDOC_Nosplit);
603: break;
604:
605: case (MDOC_Bd):
1.27 kristaps 606: if (0 == strcmp(p, "ragged"))
1.1 kristaps 607: return(MDOC_Ragged);
1.27 kristaps 608: else if (0 == strcmp(p, "unfilled"))
1.1 kristaps 609: return(MDOC_Unfilled);
1.27 kristaps 610: else if (0 == strcmp(p, "filled"))
1.1 kristaps 611: return(MDOC_Filled);
1.27 kristaps 612: else if (0 == strcmp(p, "literal"))
1.1 kristaps 613: return(MDOC_Literal);
1.27 kristaps 614: else if (0 == strcmp(p, "file"))
1.1 kristaps 615: return(MDOC_File);
1.27 kristaps 616: else if (0 == strcmp(p, "offset"))
1.1 kristaps 617: return(MDOC_Offset);
1.27 kristaps 618: else if (0 == strcmp(p, "compact"))
1.1 kristaps 619: return(MDOC_Compact);
1.28 kristaps 620: else if (0 == strcmp(p, "centered"))
621: return(MDOC_Centred);
1.1 kristaps 622: break;
623:
624: case (MDOC_Bf):
1.27 kristaps 625: if (0 == strcmp(p, "emphasis"))
1.1 kristaps 626: return(MDOC_Emphasis);
1.27 kristaps 627: else if (0 == strcmp(p, "literal"))
1.1 kristaps 628: return(MDOC_Literal);
1.27 kristaps 629: else if (0 == strcmp(p, "symbolic"))
1.1 kristaps 630: return(MDOC_Symbolic);
631: break;
632:
633: case (MDOC_Bk):
1.27 kristaps 634: if (0 == strcmp(p, "words"))
1.1 kristaps 635: return(MDOC_Words);
636: break;
637:
638: case (MDOC_Bl):
1.27 kristaps 639: if (0 == strcmp(p, "bullet"))
1.1 kristaps 640: return(MDOC_Bullet);
1.27 kristaps 641: else if (0 == strcmp(p, "dash"))
1.1 kristaps 642: return(MDOC_Dash);
1.27 kristaps 643: else if (0 == strcmp(p, "hyphen"))
1.1 kristaps 644: return(MDOC_Hyphen);
1.27 kristaps 645: else if (0 == strcmp(p, "item"))
1.1 kristaps 646: return(MDOC_Item);
1.27 kristaps 647: else if (0 == strcmp(p, "enum"))
1.1 kristaps 648: return(MDOC_Enum);
1.27 kristaps 649: else if (0 == strcmp(p, "tag"))
1.1 kristaps 650: return(MDOC_Tag);
1.27 kristaps 651: else if (0 == strcmp(p, "diag"))
1.1 kristaps 652: return(MDOC_Diag);
1.27 kristaps 653: else if (0 == strcmp(p, "hang"))
1.1 kristaps 654: return(MDOC_Hang);
1.27 kristaps 655: else if (0 == strcmp(p, "ohang"))
1.1 kristaps 656: return(MDOC_Ohang);
1.27 kristaps 657: else if (0 == strcmp(p, "inset"))
1.1 kristaps 658: return(MDOC_Inset);
1.27 kristaps 659: else if (0 == strcmp(p, "column"))
1.1 kristaps 660: return(MDOC_Column);
1.27 kristaps 661: else if (0 == strcmp(p, "width"))
1.1 kristaps 662: return(MDOC_Width);
1.27 kristaps 663: else if (0 == strcmp(p, "offset"))
1.1 kristaps 664: return(MDOC_Offset);
1.27 kristaps 665: else if (0 == strcmp(p, "compact"))
1.1 kristaps 666: return(MDOC_Compact);
1.27 kristaps 667: else if (0 == strcmp(p, "nested"))
1.1 kristaps 668: return(MDOC_Nested);
669: break;
670:
671: case (MDOC_Rv):
672: /* FALLTHROUGH */
673: case (MDOC_Ex):
1.27 kristaps 674: if (0 == strcmp(p, "std"))
1.1 kristaps 675: return(MDOC_Std);
676: break;
677: default:
678: break;
679: }
680:
681: return(MDOC_ARG_MAX);
682: }
683:
684:
685: static int
1.11 kristaps 686: argv_multi(struct mdoc *m, int line,
1.1 kristaps 687: struct mdoc_argv *v, int *pos, char *buf)
688: {
1.43 kristaps 689: enum margserr ac;
1.1 kristaps 690: char *p;
691:
692: for (v->sz = 0; ; v->sz++) {
693: if ('-' == buf[*pos])
694: break;
1.43 kristaps 695: ac = args(m, line, pos, buf, 0, &p);
696: if (ARGS_ERROR == ac)
1.1 kristaps 697: return(0);
1.43 kristaps 698: else if (ARGS_EOLN == ac)
1.1 kristaps 699: break;
700:
1.31 kristaps 701: if (0 == v->sz % MULTI_STEP)
702: v->value = mandoc_realloc(v->value,
1.1 kristaps 703: (v->sz + MULTI_STEP) * sizeof(char *));
1.31 kristaps 704:
705: v->value[(int)v->sz] = mandoc_strdup(p);
1.1 kristaps 706: }
707:
1.7 kristaps 708: return(1);
1.1 kristaps 709: }
710:
711:
712: static int
1.11 kristaps 713: argv_opt_single(struct mdoc *m, int line,
1.1 kristaps 714: struct mdoc_argv *v, int *pos, char *buf)
715: {
1.43 kristaps 716: enum margserr ac;
1.1 kristaps 717: char *p;
718:
719: if ('-' == buf[*pos])
720: return(1);
721:
1.43 kristaps 722: ac = args(m, line, pos, buf, 0, &p);
723: if (ARGS_ERROR == ac)
1.1 kristaps 724: return(0);
1.43 kristaps 725: if (ARGS_EOLN == ac)
1.1 kristaps 726: return(1);
727:
728: v->sz = 1;
1.31 kristaps 729: v->value = mandoc_malloc(sizeof(char *));
730: v->value[0] = mandoc_strdup(p);
1.2 kristaps 731:
1.1 kristaps 732: return(1);
733: }
734:
735:
736: /*
737: * Parse a single, mandatory value from the stream.
738: */
739: static int
1.11 kristaps 740: argv_single(struct mdoc *m, int line,
1.1 kristaps 741: struct mdoc_argv *v, int *pos, char *buf)
742: {
1.43 kristaps 743: int ppos;
744: enum margserr ac;
1.1 kristaps 745: char *p;
746:
747: ppos = *pos;
748:
1.43 kristaps 749: ac = args(m, line, pos, buf, 0, &p);
1.49 kristaps 750: if (ARGS_EOLN == ac) {
751: mdoc_pmsg(m, line, ppos, MANDOCERR_SYNTARGVCOUNT);
752: return(0);
753: } else if (ARGS_ERROR == ac)
1.1 kristaps 754: return(0);
755:
756: v->sz = 1;
1.31 kristaps 757: v->value = mandoc_malloc(sizeof(char *));
758: v->value[0] = mandoc_strdup(p);
1.2 kristaps 759:
1.1 kristaps 760: return(1);
761: }
762:
763:
764: /*
765: * Determine rules for parsing arguments. Arguments can either accept
766: * no parameters, an optional single parameter, one parameter, or
767: * multiple parameters.
768: */
769: static int
770: argv(struct mdoc *mdoc, int line,
771: struct mdoc_argv *v, int *pos, char *buf)
772: {
773:
774: v->sz = 0;
775: v->value = NULL;
776:
777: switch (mdoc_argvflags[v->arg]) {
778: case (ARGV_SINGLE):
779: return(argv_single(mdoc, line, v, pos, buf));
780: case (ARGV_MULTI):
781: return(argv_multi(mdoc, line, v, pos, buf));
782: case (ARGV_OPT_SINGLE):
783: return(argv_opt_single(mdoc, line, v, pos, buf));
784: default:
785: /* ARGV_NONE */
786: break;
787: }
788:
789: return(1);
790: }
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