Annotation of src/usr.bin/mandoc/mdoc_argv.c, Revision 1.31
1.31 ! schwarze 1: /* $Id: mdoc_argv.c,v 1.30 2010/06/06 20:30:08 schwarze Exp $ */
1.1 kristaps 2: /*
1.31 ! schwarze 3: * Copyright (c) 2008, 2009 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:
1.22 schwarze 44: static int 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: {
312: struct mdoc_argv *arg = &p->argv[iarg];
313: int j;
1.1 kristaps 314:
1.23 schwarze 315: if (arg->sz && arg->value) {
1.24 schwarze 316: for (j = (int)arg->sz - 1; j >= 0; j--)
1.23 schwarze 317: free(arg->value[j]);
318: free(arg->value);
1.1 kristaps 319: }
320:
1.23 schwarze 321: for (--p->argc; iarg < (int)p->argc; iarg++)
322: p->argv[iarg] = p->argv[iarg+1];
1.1 kristaps 323: }
324:
325:
1.24 schwarze 326: enum margserr
1.13 schwarze 327: mdoc_zargs(struct mdoc *m, int line, int *pos,
328: char *buf, int flags, char **v)
1.12 schwarze 329: {
330:
1.13 schwarze 331: return(args(m, line, pos, buf, flags, v));
1.12 schwarze 332: }
333:
334:
1.24 schwarze 335: enum margserr
1.22 schwarze 336: mdoc_args(struct mdoc *m, int line, int *pos,
337: char *buf, enum mdoct tok, char **v)
1.1 kristaps 338: {
1.30 schwarze 339: int fl;
1.1 kristaps 340: struct mdoc_node *n;
341:
1.22 schwarze 342: fl = mdoc_argflags[tok];
1.1 kristaps 343:
1.12 schwarze 344: if (MDOC_It != tok)
345: return(args(m, line, pos, buf, fl, v));
346:
1.30 schwarze 347: /*
348: * We know that we're in an `It', so it's reasonable to expect
349: * us to be sitting in a `Bl'. Someday this may not be the case
350: * (if we allow random `It's sitting out there), so provide a
351: * safe fall-back into the default behaviour.
1.1 kristaps 352: */
353:
1.12 schwarze 354: for (n = m->last; n; n = n->parent)
1.30 schwarze 355: if (MDOC_Bl == n->tok)
1.12 schwarze 356: break;
1.1 kristaps 357:
1.31 ! schwarze 358: if (n && LIST_column == n->data.Bl.type) {
1.12 schwarze 359: fl |= ARGS_TABSEP;
360: fl &= ~ARGS_DELIM;
1.1 kristaps 361: }
362:
1.8 schwarze 363: return(args(m, line, pos, buf, fl, v));
1.1 kristaps 364: }
365:
366:
1.24 schwarze 367: static enum margserr
1.12 schwarze 368: args(struct mdoc *m, int line, int *pos,
1.11 schwarze 369: char *buf, int fl, char **v)
1.1 kristaps 370: {
1.30 schwarze 371: int i;
372: char *p, *pp;
373: enum margserr rc;
374: enum mdelim d;
1.1 kristaps 375:
1.13 schwarze 376: /*
377: * Parse out the terms (like `val' in `.Xx -arg val' or simply
378: * `.Xx val'), which can have all sorts of properties:
379: *
380: * ARGS_DELIM: use special handling if encountering trailing
381: * delimiters in the form of [[::delim::][ ]+]+.
382: *
383: * ARGS_NOWARN: don't post warnings. This is only used when
384: * re-parsing delimiters, as the warnings have already been
385: * posted.
386: *
387: * ARGS_TABSEP: use special handling for tab/`Ta' separated
388: * phrases like in `Bl -column'.
389: */
390:
1.12 schwarze 391: assert(' ' != buf[*pos]);
1.1 kristaps 392:
1.28 schwarze 393: if ('\0' == buf[*pos]) {
394: if (MDOC_PPHRASE & m->flags)
395: return(ARGS_EOLN);
396: /*
397: * If we're not in a partial phrase and the flag for
398: * being a phrase literal is still set, the punctuation
399: * is unterminated.
400: */
401: if (MDOC_PHRASELIT & m->flags)
1.29 schwarze 402: if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_BADQUOTE))
1.28 schwarze 403: return(ARGS_ERROR);
404:
405: m->flags &= ~MDOC_PHRASELIT;
1.1 kristaps 406: return(ARGS_EOLN);
1.28 schwarze 407: }
1.1 kristaps 408:
409: /*
1.25 schwarze 410: * If the first character is a closing delimiter and we're to
411: * look for delimited strings, then pass down the buffer seeing
412: * if it follows the pattern of [[::delim::][ ]+]+. Note that
413: * we ONLY care about closing delimiters.
1.1 kristaps 414: */
415:
1.27 schwarze 416: if ((fl & ARGS_DELIM) && DELIM_CLOSE == mdoc_iscdelim(buf[*pos])) {
1.1 kristaps 417: for (i = *pos; buf[i]; ) {
1.30 schwarze 418: d = mdoc_iscdelim(buf[i]);
1.27 schwarze 419: if (DELIM_NONE == d || DELIM_OPEN == d)
1.1 kristaps 420: break;
421: i++;
1.25 schwarze 422: if ('\0' == buf[i] || ' ' != buf[i])
1.1 kristaps 423: break;
424: i++;
425: while (buf[i] && ' ' == buf[i])
426: i++;
427: }
1.12 schwarze 428:
1.25 schwarze 429: if ('\0' == buf[i]) {
1.1 kristaps 430: *v = &buf[*pos];
1.30 schwarze 431: if (i && ' ' != buf[i - 1])
1.13 schwarze 432: return(ARGS_PUNCT);
433: if (ARGS_NOWARN & fl)
434: return(ARGS_PUNCT);
1.29 schwarze 435: if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE))
1.13 schwarze 436: return(ARGS_ERROR);
1.1 kristaps 437: return(ARGS_PUNCT);
438: }
439: }
440:
1.12 schwarze 441: *v = &buf[*pos];
1.1 kristaps 442:
1.12 schwarze 443: /*
444: * First handle TABSEP items, restricted to `Bl -column'. This
445: * ignores conventional token parsing and instead uses tabs or
446: * `Ta' macros to separate phrases. Phrases are parsed again
447: * for arguments at a later phase.
448: */
449:
450: if (ARGS_TABSEP & fl) {
451: /* Scan ahead to tab (can't be escaped). */
452: p = strchr(*v, '\t');
1.28 schwarze 453: pp = NULL;
1.12 schwarze 454:
455: /* Scan ahead to unescaped `Ta'. */
1.28 schwarze 456: if ( ! (MDOC_PHRASELIT & m->flags))
457: for (pp = *v; ; pp++) {
458: if (NULL == (pp = strstr(pp, "Ta")))
459: break;
460: if (pp > *v && ' ' != *(pp - 1))
461: continue;
1.30 schwarze 462: if (' ' == *(pp + 2) || '\0' == *(pp + 2))
1.28 schwarze 463: break;
464: }
1.1 kristaps 465:
1.24 schwarze 466: /* By default, assume a phrase. */
467: rc = ARGS_PHRASE;
468:
1.1 kristaps 469: /*
1.12 schwarze 470: * Adjust new-buffer position to be beyond delimiter
471: * mark (e.g., Ta -> end + 2).
1.1 kristaps 472: */
1.12 schwarze 473: if (p && pp) {
474: *pos += pp < p ? 2 : 1;
1.24 schwarze 475: rc = pp < p ? ARGS_PHRASE : ARGS_PPHRASE;
1.12 schwarze 476: p = pp < p ? pp : p;
477: } else if (p && ! pp) {
1.24 schwarze 478: rc = ARGS_PPHRASE;
1.12 schwarze 479: *pos += 1;
480: } else if (pp && ! p) {
481: p = pp;
482: *pos += 2;
1.25 schwarze 483: } else {
484: rc = ARGS_PEND;
1.12 schwarze 485: p = strchr(*v, 0);
1.25 schwarze 486: }
1.1 kristaps 487:
1.12 schwarze 488: /* Whitespace check for eoln case... */
1.30 schwarze 489: if ('\0' == *p && ' ' == *(p - 1) && ! (ARGS_NOWARN & fl))
1.29 schwarze 490: if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE))
1.12 schwarze 491: return(ARGS_ERROR);
492:
493: *pos += (int)(p - *v);
494:
495: /* Strip delimiter's preceding whitespace. */
496: pp = p - 1;
497: while (pp > *v && ' ' == *pp) {
498: if (pp > *v && '\\' == *(pp - 1))
499: break;
500: pp--;
501: }
502: *(pp + 1) = 0;
1.1 kristaps 503:
1.12 schwarze 504: /* Strip delimiter's proceeding whitespace. */
505: for (pp = &buf[*pos]; ' ' == *pp; pp++, (*pos)++)
506: /* Skip ahead. */ ;
1.1 kristaps 507:
1.24 schwarze 508: return(rc);
1.12 schwarze 509: }
1.1 kristaps 510:
1.12 schwarze 511: /*
512: * Process a quoted literal. A quote begins with a double-quote
513: * and ends with a double-quote NOT preceded by a double-quote.
514: * Whitespace is NOT involved in literal termination.
515: */
1.1 kristaps 516:
1.28 schwarze 517: if (MDOC_PHRASELIT & m->flags || '\"' == buf[*pos]) {
518: if ( ! (MDOC_PHRASELIT & m->flags))
519: *v = &buf[++(*pos)];
520:
521: if (MDOC_PPHRASE & m->flags)
522: m->flags |= MDOC_PHRASELIT;
1.1 kristaps 523:
1.12 schwarze 524: for ( ; buf[*pos]; (*pos)++) {
525: if ('\"' != buf[*pos])
526: continue;
527: if ('\"' != buf[*pos + 1])
528: break;
529: (*pos)++;
530: }
1.1 kristaps 531:
1.28 schwarze 532: if ('\0' == buf[*pos]) {
533: if (ARGS_NOWARN & fl || MDOC_PPHRASE & m->flags)
1.13 schwarze 534: return(ARGS_QWORD);
1.29 schwarze 535: if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_BADQUOTE))
1.12 schwarze 536: return(ARGS_ERROR);
537: return(ARGS_QWORD);
538: }
1.1 kristaps 539:
1.28 schwarze 540: m->flags &= ~MDOC_PHRASELIT;
541: buf[(*pos)++] = '\0';
1.1 kristaps 542:
1.28 schwarze 543: if ('\0' == buf[*pos])
1.12 schwarze 544: return(ARGS_QWORD);
1.1 kristaps 545:
1.12 schwarze 546: while (' ' == buf[*pos])
547: (*pos)++;
1.1 kristaps 548:
1.13 schwarze 549: if (0 == buf[*pos] && ! (ARGS_NOWARN & fl))
1.29 schwarze 550: if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE))
1.12 schwarze 551: return(ARGS_ERROR);
1.1 kristaps 552:
1.12 schwarze 553: return(ARGS_QWORD);
1.1 kristaps 554: }
555:
1.12 schwarze 556: /*
557: * A non-quoted term progresses until either the end of line or
558: * a non-escaped whitespace.
1.1 kristaps 559: */
560:
1.12 schwarze 561: for ( ; buf[*pos]; (*pos)++)
1.30 schwarze 562: if (*pos && ' ' == buf[*pos] && '\\' != buf[*pos - 1])
1.12 schwarze 563: break;
1.1 kristaps 564:
1.28 schwarze 565: if ('\0' == buf[*pos])
1.12 schwarze 566: return(ARGS_WORD);
1.1 kristaps 567:
1.28 schwarze 568: buf[(*pos)++] = '\0';
1.1 kristaps 569:
1.12 schwarze 570: while (' ' == buf[*pos])
1.1 kristaps 571: (*pos)++;
572:
1.28 schwarze 573: if ('\0' == buf[*pos] && ! (ARGS_NOWARN & fl))
1.29 schwarze 574: if ( ! mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE))
1.12 schwarze 575: return(ARGS_ERROR);
1.1 kristaps 576:
1.12 schwarze 577: return(ARGS_WORD);
1.1 kristaps 578: }
579:
580:
581: static int
1.22 schwarze 582: argv_a2arg(enum mdoct tok, const char *p)
1.1 kristaps 583: {
584:
585: /*
586: * Parse an argument identifier from its text. XXX - this
587: * should really be table-driven to clarify the code.
588: *
589: * If you add an argument to the list, make sure that you
590: * register it here with its one or more macros!
591: */
592:
593: switch (tok) {
594: case (MDOC_An):
1.16 schwarze 595: if (0 == strcmp(p, "split"))
1.1 kristaps 596: return(MDOC_Split);
1.16 schwarze 597: else if (0 == strcmp(p, "nosplit"))
1.1 kristaps 598: return(MDOC_Nosplit);
599: break;
600:
601: case (MDOC_Bd):
1.16 schwarze 602: if (0 == strcmp(p, "ragged"))
1.1 kristaps 603: return(MDOC_Ragged);
1.16 schwarze 604: else if (0 == strcmp(p, "unfilled"))
1.1 kristaps 605: return(MDOC_Unfilled);
1.16 schwarze 606: else if (0 == strcmp(p, "filled"))
1.1 kristaps 607: return(MDOC_Filled);
1.16 schwarze 608: else if (0 == strcmp(p, "literal"))
1.1 kristaps 609: return(MDOC_Literal);
1.16 schwarze 610: else if (0 == strcmp(p, "file"))
1.1 kristaps 611: return(MDOC_File);
1.16 schwarze 612: else if (0 == strcmp(p, "offset"))
1.1 kristaps 613: return(MDOC_Offset);
1.16 schwarze 614: else if (0 == strcmp(p, "compact"))
1.1 kristaps 615: return(MDOC_Compact);
1.17 schwarze 616: else if (0 == strcmp(p, "centered"))
617: return(MDOC_Centred);
1.1 kristaps 618: break;
619:
620: case (MDOC_Bf):
1.16 schwarze 621: if (0 == strcmp(p, "emphasis"))
1.1 kristaps 622: return(MDOC_Emphasis);
1.16 schwarze 623: else if (0 == strcmp(p, "literal"))
1.1 kristaps 624: return(MDOC_Literal);
1.16 schwarze 625: else if (0 == strcmp(p, "symbolic"))
1.1 kristaps 626: return(MDOC_Symbolic);
627: break;
628:
629: case (MDOC_Bk):
1.16 schwarze 630: if (0 == strcmp(p, "words"))
1.1 kristaps 631: return(MDOC_Words);
632: break;
633:
634: case (MDOC_Bl):
1.16 schwarze 635: if (0 == strcmp(p, "bullet"))
1.1 kristaps 636: return(MDOC_Bullet);
1.16 schwarze 637: else if (0 == strcmp(p, "dash"))
1.1 kristaps 638: return(MDOC_Dash);
1.16 schwarze 639: else if (0 == strcmp(p, "hyphen"))
1.1 kristaps 640: return(MDOC_Hyphen);
1.16 schwarze 641: else if (0 == strcmp(p, "item"))
1.1 kristaps 642: return(MDOC_Item);
1.16 schwarze 643: else if (0 == strcmp(p, "enum"))
1.1 kristaps 644: return(MDOC_Enum);
1.16 schwarze 645: else if (0 == strcmp(p, "tag"))
1.1 kristaps 646: return(MDOC_Tag);
1.16 schwarze 647: else if (0 == strcmp(p, "diag"))
1.1 kristaps 648: return(MDOC_Diag);
1.16 schwarze 649: else if (0 == strcmp(p, "hang"))
1.1 kristaps 650: return(MDOC_Hang);
1.16 schwarze 651: else if (0 == strcmp(p, "ohang"))
1.1 kristaps 652: return(MDOC_Ohang);
1.16 schwarze 653: else if (0 == strcmp(p, "inset"))
1.1 kristaps 654: return(MDOC_Inset);
1.16 schwarze 655: else if (0 == strcmp(p, "column"))
1.1 kristaps 656: return(MDOC_Column);
1.16 schwarze 657: else if (0 == strcmp(p, "width"))
1.1 kristaps 658: return(MDOC_Width);
1.16 schwarze 659: else if (0 == strcmp(p, "offset"))
1.1 kristaps 660: return(MDOC_Offset);
1.16 schwarze 661: else if (0 == strcmp(p, "compact"))
1.1 kristaps 662: return(MDOC_Compact);
1.16 schwarze 663: else if (0 == strcmp(p, "nested"))
1.1 kristaps 664: return(MDOC_Nested);
665: break;
666:
667: case (MDOC_Rv):
668: /* FALLTHROUGH */
669: case (MDOC_Ex):
1.16 schwarze 670: if (0 == strcmp(p, "std"))
1.1 kristaps 671: return(MDOC_Std);
672: break;
673: default:
674: break;
675: }
676:
677: return(MDOC_ARG_MAX);
678: }
679:
680:
681: static int
1.6 schwarze 682: argv_multi(struct mdoc *m, int line,
1.1 kristaps 683: struct mdoc_argv *v, int *pos, char *buf)
684: {
1.24 schwarze 685: enum margserr ac;
1.1 kristaps 686: char *p;
687:
688: for (v->sz = 0; ; v->sz++) {
689: if ('-' == buf[*pos])
690: break;
1.24 schwarze 691: ac = args(m, line, pos, buf, 0, &p);
692: if (ARGS_ERROR == ac)
1.1 kristaps 693: return(0);
1.24 schwarze 694: else if (ARGS_EOLN == ac)
1.1 kristaps 695: break;
696:
1.19 schwarze 697: if (0 == v->sz % MULTI_STEP)
698: v->value = mandoc_realloc(v->value,
1.1 kristaps 699: (v->sz + MULTI_STEP) * sizeof(char *));
1.19 schwarze 700:
701: v->value[(int)v->sz] = mandoc_strdup(p);
1.1 kristaps 702: }
703:
1.4 schwarze 704: return(1);
1.1 kristaps 705: }
706:
707:
708: static int
1.6 schwarze 709: argv_opt_single(struct mdoc *m, int line,
1.1 kristaps 710: struct mdoc_argv *v, int *pos, char *buf)
711: {
1.24 schwarze 712: enum margserr ac;
1.1 kristaps 713: char *p;
714:
715: if ('-' == buf[*pos])
716: return(1);
717:
1.24 schwarze 718: ac = args(m, line, pos, buf, 0, &p);
719: if (ARGS_ERROR == ac)
1.1 kristaps 720: return(0);
1.24 schwarze 721: if (ARGS_EOLN == ac)
1.1 kristaps 722: return(1);
723:
724: v->sz = 1;
1.19 schwarze 725: v->value = mandoc_malloc(sizeof(char *));
726: v->value[0] = mandoc_strdup(p);
1.1 kristaps 727:
728: return(1);
729: }
730:
731:
732: /*
733: * Parse a single, mandatory value from the stream.
734: */
735: static int
1.6 schwarze 736: argv_single(struct mdoc *m, int line,
1.1 kristaps 737: struct mdoc_argv *v, int *pos, char *buf)
738: {
1.24 schwarze 739: int ppos;
740: enum margserr ac;
1.1 kristaps 741: char *p;
742:
743: ppos = *pos;
744:
1.24 schwarze 745: ac = args(m, line, pos, buf, 0, &p);
1.29 schwarze 746: if (ARGS_EOLN == ac) {
747: mdoc_pmsg(m, line, ppos, MANDOCERR_SYNTARGVCOUNT);
748: return(0);
749: } else if (ARGS_ERROR == ac)
1.1 kristaps 750: return(0);
751:
752: v->sz = 1;
1.19 schwarze 753: v->value = mandoc_malloc(sizeof(char *));
754: v->value[0] = mandoc_strdup(p);
1.1 kristaps 755:
756: return(1);
757: }
758:
759:
760: /*
761: * Determine rules for parsing arguments. Arguments can either accept
762: * no parameters, an optional single parameter, one parameter, or
763: * multiple parameters.
764: */
765: static int
766: argv(struct mdoc *mdoc, int line,
767: struct mdoc_argv *v, int *pos, char *buf)
768: {
769:
770: v->sz = 0;
771: v->value = NULL;
772:
773: switch (mdoc_argvflags[v->arg]) {
774: case (ARGV_SINGLE):
775: return(argv_single(mdoc, line, v, pos, buf));
776: case (ARGV_MULTI):
777: return(argv_multi(mdoc, line, v, pos, buf));
778: case (ARGV_OPT_SINGLE):
779: return(argv_opt_single(mdoc, line, v, pos, buf));
780: default:
781: /* ARGV_NONE */
782: break;
783: }
784:
785: return(1);
786: }
![[BACK]](/icons/back.gif){kind=icon}
Return to mdoc_argv.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / mandoc