Annotation of mandoc/mdoc_argv.c, Revision 1.72
1.72 ! kristaps 1: /* $Id: mdoc_argv.c,v 1.71 2011/03/22 14:28:48 kristaps Exp $ */
1.1 kristaps 2: /*
1.56 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
1.3 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:
1.72 ! kristaps 29: #include "mdoc.h"
1.49 kristaps 30: #include "mandoc.h"
1.1 kristaps 31: #include "libmdoc.h"
1.31 kristaps 32: #include "libmandoc.h"
1.1 kristaps 33:
1.68 kristaps 34: #define MULTI_STEP 5 /* pre-allocate argument values */
1.1 kristaps 35:
1.57 kristaps 36: static enum mdocargt argv_a2arg(enum mdoct, const char *);
1.39 kristaps 37: static enum margserr args(struct mdoc *, int, int *,
1.1 kristaps 38: char *, int, char **);
1.69 kristaps 39: static int args_checkpunct(struct mdoc *,
40: const char *, int, int, int);
1.1 kristaps 41: static int argv(struct mdoc *, int,
42: struct mdoc_argv *, int *, char *);
43: static int argv_single(struct mdoc *, int,
44: struct mdoc_argv *, int *, char *);
45: static int argv_opt_single(struct mdoc *, int,
46: struct mdoc_argv *, int *, char *);
47: static int argv_multi(struct mdoc *, int,
48: struct mdoc_argv *, int *, char *);
1.71 kristaps 49: static void argn_free(struct mdoc_arg *, int);
1.2 kristaps 50:
1.68 kristaps 51: enum argvflag {
52: ARGV_NONE, /* no args to flag (e.g., -split) */
53: ARGV_SINGLE, /* one arg to flag (e.g., -file xxx) */
54: ARGV_MULTI, /* multiple args (e.g., -column xxx yyy) */
55: ARGV_OPT_SINGLE /* optional arg (e.g., -offset [xxx]) */
56: };
1.1 kristaps 57:
1.68 kristaps 58: static const enum argvflag argvflags[MDOC_ARG_MAX] = {
1.1 kristaps 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 */
1.29 kristaps 64: ARGV_SINGLE, /* MDOC_File */
1.26 kristaps 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 */
1.25 kristaps 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:
1.68 kristaps 87: static const int argflags[MDOC_MAX] = {
1.5 kristaps 88: 0, /* Ap */
1.1 kristaps 89: 0, /* Dd */
90: 0, /* Dt */
91: 0, /* Os */
1.17 kristaps 92: 0, /* Sh */
93: 0, /* Ss */
1.59 kristaps 94: 0, /* Pp */
1.1 kristaps 95: ARGS_DELIM, /* D1 */
1.17 kristaps 96: ARGS_DELIM, /* Dl */
1.1 kristaps 97: 0, /* Bd */
98: 0, /* Ed */
1.17 kristaps 99: 0, /* Bl */
1.1 kristaps 100: 0, /* El */
101: 0, /* It */
102: ARGS_DELIM, /* Ad */
103: ARGS_DELIM, /* An */
1.17 kristaps 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 */
1.17 kristaps 111: ARGS_DELIM, /* Fa */
1.1 kristaps 112: 0, /* Fd */
113: ARGS_DELIM, /* Fl */
1.17 kristaps 114: ARGS_DELIM, /* Fn */
115: ARGS_DELIM, /* Ft */
1.1 kristaps 116: ARGS_DELIM, /* Ic */
117: 0, /* In */
1.17 kristaps 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 */
1.15 kristaps 125: ARGS_DELIM, /* St */
1.1 kristaps 126: ARGS_DELIM, /* Va */
127: ARGS_DELIM, /* Vt */
128: ARGS_DELIM, /* Xr */
1.17 kristaps 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 */
1.17 kristaps 179: ARGS_DELIM, /* Sy */
1.1 kristaps 180: ARGS_DELIM, /* Tn */
181: ARGS_DELIM, /* Ux */
182: ARGS_DELIM, /* Xc */
183: 0, /* Xo */
1.17 kristaps 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 */
1.60 schwarze 195: 0, /* Lp */
1.17 kristaps 196: ARGS_DELIM, /* Lk */
197: ARGS_DELIM, /* Mt */
1.1 kristaps 198: ARGS_DELIM, /* Brq */
199: 0, /* Bro */
200: ARGS_DELIM, /* Brc */
1.17 kristaps 201: 0, /* %C */
1.1 kristaps 202: 0, /* Es */
203: 0, /* En */
204: 0, /* Dx */
1.17 kristaps 205: 0, /* %Q */
1.14 kristaps 206: 0, /* br */
207: 0, /* sp */
1.30 kristaps 208: 0, /* %U */
1.51 kristaps 209: 0, /* Ta */
1.1 kristaps 210: };
211:
212: /*
213: * Parse an argument from line text. This comes in the form of -key
214: * [value0...], which may either have a single mandatory value, at least
215: * one mandatory value, an optional single value, or no value.
216: */
1.40 kristaps 217: enum margverr
1.35 kristaps 218: mdoc_argv(struct mdoc *m, int line, enum mdoct tok,
1.1 kristaps 219: struct mdoc_arg **v, int *pos, char *buf)
220: {
221: char *p, sv;
222: struct mdoc_argv tmp;
223: struct mdoc_arg *arg;
224:
1.52 kristaps 225: if ('\0' == buf[*pos])
1.1 kristaps 226: return(ARGV_EOLN);
227:
228: assert(' ' != buf[*pos]);
229:
230: /* Parse through to the first unescaped space. */
231:
232: p = &buf[++(*pos)];
233:
234: assert(*pos > 0);
235:
236: /* LINTED */
237: while (buf[*pos]) {
238: if (' ' == buf[*pos])
239: if ('\\' != buf[*pos - 1])
240: break;
241: (*pos)++;
242: }
243:
244: /* XXX - save zeroed byte, if not an argument. */
245:
1.52 kristaps 246: sv = '\0';
1.1 kristaps 247: if (buf[*pos]) {
248: sv = buf[*pos];
1.52 kristaps 249: buf[(*pos)++] = '\0';
1.1 kristaps 250: }
251:
1.68 kristaps 252: memset(&tmp, 0, sizeof(struct mdoc_argv));
1.1 kristaps 253: tmp.line = line;
254: tmp.pos = *pos;
255:
256: /* See if our token accepts the argument. */
257:
258: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
259: /* XXX - restore saved zeroed byte. */
260: if (sv)
261: buf[*pos - 1] = sv;
262: return(ARGV_WORD);
263: }
264:
265: while (buf[*pos] && ' ' == buf[*pos])
266: (*pos)++;
267:
1.11 kristaps 268: if ( ! argv(m, line, &tmp, pos, buf))
1.1 kristaps 269: return(ARGV_ERROR);
270:
1.31 kristaps 271: if (NULL == (arg = *v))
1.32 kristaps 272: arg = *v = mandoc_calloc(1, sizeof(struct mdoc_arg));
1.1 kristaps 273:
274: arg->argc++;
1.31 kristaps 275: arg->argv = mandoc_realloc
276: (arg->argv, arg->argc * sizeof(struct mdoc_argv));
1.2 kristaps 277:
1.68 kristaps 278: memcpy(&arg->argv[(int)arg->argc - 1],
1.1 kristaps 279: &tmp, sizeof(struct mdoc_argv));
280:
281: return(ARGV_ARG);
282: }
283:
284: void
285: mdoc_argv_free(struct mdoc_arg *p)
286: {
1.37 kristaps 287: int i;
1.1 kristaps 288:
289: if (NULL == p)
290: return;
291:
292: if (p->refcnt) {
293: --(p->refcnt);
294: if (p->refcnt)
295: return;
296: }
297: assert(p->argc);
298:
1.37 kristaps 299: for (i = (int)p->argc - 1; i >= 0; i--)
1.71 kristaps 300: argn_free(p, i);
1.37 kristaps 301:
302: free(p->argv);
303: free(p);
304: }
305:
1.71 kristaps 306: static void
307: argn_free(struct mdoc_arg *p, int iarg)
1.37 kristaps 308: {
1.58 kristaps 309: struct mdoc_argv *arg;
1.37 kristaps 310: int j;
1.58 kristaps 311:
312: arg = &p->argv[iarg];
1.1 kristaps 313:
1.37 kristaps 314: if (arg->sz && arg->value) {
315: for (j = (int)arg->sz - 1; j >= 0; j--)
316: free(arg->value[j]);
317: free(arg->value);
1.1 kristaps 318: }
319:
1.37 kristaps 320: for (--p->argc; iarg < (int)p->argc; iarg++)
321: p->argv[iarg] = p->argv[iarg+1];
1.1 kristaps 322: }
323:
1.39 kristaps 324: enum margserr
1.23 kristaps 325: mdoc_zargs(struct mdoc *m, int line, int *pos,
326: char *buf, int flags, char **v)
1.19 kristaps 327: {
328:
1.23 kristaps 329: return(args(m, line, pos, buf, flags, v));
1.19 kristaps 330: }
331:
1.39 kristaps 332: enum margserr
1.35 kristaps 333: mdoc_args(struct mdoc *m, int line, int *pos,
334: char *buf, enum mdoct tok, char **v)
1.1 kristaps 335: {
1.50 kristaps 336: int fl;
1.1 kristaps 337: struct mdoc_node *n;
338:
1.68 kristaps 339: fl = argflags[tok];
1.1 kristaps 340:
1.17 kristaps 341: if (MDOC_It != tok)
342: return(args(m, line, pos, buf, fl, v));
343:
1.51 kristaps 344: /*
345: * We know that we're in an `It', so it's reasonable to expect
346: * us to be sitting in a `Bl'. Someday this may not be the case
347: * (if we allow random `It's sitting out there), so provide a
348: * safe fall-back into the default behaviour.
349: */
350:
1.17 kristaps 351: for (n = m->last; n; n = n->parent)
1.50 kristaps 352: if (MDOC_Bl == n->tok)
1.17 kristaps 353: break;
1.1 kristaps 354:
1.62 kristaps 355: if (n && LIST_column == n->norm->Bl.type) {
1.17 kristaps 356: fl |= ARGS_TABSEP;
357: fl &= ~ARGS_DELIM;
1.1 kristaps 358: }
359:
1.11 kristaps 360: return(args(m, line, pos, buf, fl, v));
1.1 kristaps 361: }
362:
1.39 kristaps 363: static enum margserr
1.13 kristaps 364: args(struct mdoc *m, int line, int *pos,
365: char *buf, int fl, char **v)
1.1 kristaps 366: {
1.52 kristaps 367: char *p, *pp;
368: enum margserr rc;
1.1 kristaps 369:
1.24 kristaps 370: /*
371: * Parse out the terms (like `val' in `.Xx -arg val' or simply
372: * `.Xx val'), which can have all sorts of properties:
373: *
374: * ARGS_DELIM: use special handling if encountering trailing
375: * delimiters in the form of [[::delim::][ ]+]+.
376: *
377: * ARGS_NOWARN: don't post warnings. This is only used when
378: * re-parsing delimiters, as the warnings have already been
379: * posted.
380: *
381: * ARGS_TABSEP: use special handling for tab/`Ta' separated
382: * phrases like in `Bl -column'.
383: */
384:
1.17 kristaps 385: assert(' ' != buf[*pos]);
1.1 kristaps 386:
1.46 kristaps 387: if ('\0' == buf[*pos]) {
1.47 kristaps 388: if (MDOC_PPHRASE & m->flags)
1.46 kristaps 389: return(ARGS_EOLN);
390: /*
391: * If we're not in a partial phrase and the flag for
392: * being a phrase literal is still set, the punctuation
393: * is unterminated.
394: */
395: if (MDOC_PHRASELIT & m->flags)
1.67 kristaps 396: mdoc_pmsg(m, line, *pos, MANDOCERR_BADQUOTE);
1.46 kristaps 397:
398: m->flags &= ~MDOC_PHRASELIT;
1.1 kristaps 399: return(ARGS_EOLN);
1.46 kristaps 400: }
1.1 kristaps 401:
1.64 kristaps 402: *v = &buf[*pos];
1.17 kristaps 403:
1.69 kristaps 404: if (ARGS_DELIM & fl && args_checkpunct(m, buf, *pos, line, fl))
1.64 kristaps 405: return(ARGS_PUNCT);
1.1 kristaps 406:
1.17 kristaps 407: /*
408: * First handle TABSEP items, restricted to `Bl -column'. This
409: * ignores conventional token parsing and instead uses tabs or
410: * `Ta' macros to separate phrases. Phrases are parsed again
411: * for arguments at a later phase.
412: */
1.1 kristaps 413:
1.17 kristaps 414: if (ARGS_TABSEP & fl) {
1.20 kristaps 415: /* Scan ahead to tab (can't be escaped). */
1.17 kristaps 416: p = strchr(*v, '\t');
1.46 kristaps 417: pp = NULL;
1.17 kristaps 418:
419: /* Scan ahead to unescaped `Ta'. */
1.46 kristaps 420: if ( ! (MDOC_PHRASELIT & m->flags))
421: for (pp = *v; ; pp++) {
422: if (NULL == (pp = strstr(pp, "Ta")))
423: break;
424: if (pp > *v && ' ' != *(pp - 1))
425: continue;
1.51 kristaps 426: if (' ' == *(pp + 2) || '\0' == *(pp + 2))
1.46 kristaps 427: break;
428: }
1.17 kristaps 429:
1.42 kristaps 430: /* By default, assume a phrase. */
431: rc = ARGS_PHRASE;
432:
1.21 kristaps 433: /*
434: * Adjust new-buffer position to be beyond delimiter
435: * mark (e.g., Ta -> end + 2).
436: */
1.20 kristaps 437: if (p && pp) {
438: *pos += pp < p ? 2 : 1;
1.42 kristaps 439: rc = pp < p ? ARGS_PHRASE : ARGS_PPHRASE;
1.20 kristaps 440: p = pp < p ? pp : p;
441: } else if (p && ! pp) {
1.42 kristaps 442: rc = ARGS_PPHRASE;
1.20 kristaps 443: *pos += 1;
444: } else if (pp && ! p) {
1.17 kristaps 445: p = pp;
1.20 kristaps 446: *pos += 2;
1.44 kristaps 447: } else {
448: rc = ARGS_PEND;
1.20 kristaps 449: p = strchr(*v, 0);
1.44 kristaps 450: }
1.20 kristaps 451:
1.21 kristaps 452: /* Whitespace check for eoln case... */
1.52 kristaps 453: if ('\0' == *p && ' ' == *(p - 1) && ! (ARGS_NOWARN & fl))
1.67 kristaps 454: mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE);
1.20 kristaps 455:
456: *pos += (int)(p - *v);
1.17 kristaps 457:
458: /* Strip delimiter's preceding whitespace. */
1.20 kristaps 459: pp = p - 1;
460: while (pp > *v && ' ' == *pp) {
461: if (pp > *v && '\\' == *(pp - 1))
462: break;
463: pp--;
1.17 kristaps 464: }
1.20 kristaps 465: *(pp + 1) = 0;
1.17 kristaps 466:
1.20 kristaps 467: /* Strip delimiter's proceeding whitespace. */
468: for (pp = &buf[*pos]; ' ' == *pp; pp++, (*pos)++)
469: /* Skip ahead. */ ;
1.1 kristaps 470:
1.41 kristaps 471: return(rc);
1.17 kristaps 472: }
1.1 kristaps 473:
1.17 kristaps 474: /*
475: * Process a quoted literal. A quote begins with a double-quote
476: * and ends with a double-quote NOT preceded by a double-quote.
477: * Whitespace is NOT involved in literal termination.
478: */
1.1 kristaps 479:
1.46 kristaps 480: if (MDOC_PHRASELIT & m->flags || '\"' == buf[*pos]) {
481: if ( ! (MDOC_PHRASELIT & m->flags))
482: *v = &buf[++(*pos)];
483:
1.47 kristaps 484: if (MDOC_PPHRASE & m->flags)
1.46 kristaps 485: m->flags |= MDOC_PHRASELIT;
1.1 kristaps 486:
1.17 kristaps 487: for ( ; buf[*pos]; (*pos)++) {
488: if ('\"' != buf[*pos])
489: continue;
490: if ('\"' != buf[*pos + 1])
491: break;
492: (*pos)++;
493: }
1.1 kristaps 494:
1.46 kristaps 495: if ('\0' == buf[*pos]) {
1.47 kristaps 496: if (ARGS_NOWARN & fl || MDOC_PPHRASE & m->flags)
1.23 kristaps 497: return(ARGS_QWORD);
1.67 kristaps 498: mdoc_pmsg(m, line, *pos, MANDOCERR_BADQUOTE);
1.18 kristaps 499: return(ARGS_QWORD);
1.17 kristaps 500: }
1.1 kristaps 501:
1.46 kristaps 502: m->flags &= ~MDOC_PHRASELIT;
503: buf[(*pos)++] = '\0';
1.1 kristaps 504:
1.46 kristaps 505: if ('\0' == buf[*pos])
1.17 kristaps 506: return(ARGS_QWORD);
1.1 kristaps 507:
1.17 kristaps 508: while (' ' == buf[*pos])
509: (*pos)++;
1.1 kristaps 510:
1.23 kristaps 511: if (0 == buf[*pos] && ! (ARGS_NOWARN & fl))
1.67 kristaps 512: mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE);
1.1 kristaps 513:
1.17 kristaps 514: return(ARGS_QWORD);
1.1 kristaps 515: }
516:
1.17 kristaps 517: /*
518: * A non-quoted term progresses until either the end of line or
519: * a non-escaped whitespace.
1.1 kristaps 520: */
521:
1.17 kristaps 522: for ( ; buf[*pos]; (*pos)++)
1.52 kristaps 523: if (*pos && ' ' == buf[*pos] && '\\' != buf[*pos - 1])
1.17 kristaps 524: break;
1.1 kristaps 525:
1.46 kristaps 526: if ('\0' == buf[*pos])
1.17 kristaps 527: return(ARGS_WORD);
1.1 kristaps 528:
1.46 kristaps 529: buf[(*pos)++] = '\0';
1.1 kristaps 530:
1.17 kristaps 531: while (' ' == buf[*pos])
1.1 kristaps 532: (*pos)++;
533:
1.46 kristaps 534: if ('\0' == buf[*pos] && ! (ARGS_NOWARN & fl))
1.67 kristaps 535: mdoc_pmsg(m, line, *pos, MANDOCERR_EOLNSPACE);
1.1 kristaps 536:
1.17 kristaps 537: return(ARGS_WORD);
1.64 kristaps 538: }
539:
540: /*
541: * Check if the string consists only of space-separated closing
1.65 kristaps 542: * delimiters. This is a bit of a dance: the first must be a close
543: * delimiter, but it may be followed by middle delimiters. Arbitrary
544: * whitespace may separate these tokens.
1.64 kristaps 545: */
546: static int
1.69 kristaps 547: args_checkpunct(struct mdoc *m, const char *buf, int i, int ln, int fl)
1.64 kristaps 548: {
1.69 kristaps 549: int j;
550: char dbuf[DELIMSZ];
1.64 kristaps 551: enum mdelim d;
552:
1.65 kristaps 553: /* First token must be a close-delimiter. */
554:
1.69 kristaps 555: for (j = 0; buf[i] && ' ' != buf[i] && j < DELIMSZ; j++, i++)
556: dbuf[j] = buf[i];
1.65 kristaps 557:
558: if (DELIMSZ == j)
559: return(0);
560:
1.69 kristaps 561: dbuf[j] = '\0';
1.70 kristaps 562: if (DELIM_CLOSE != mdoc_isdelim(dbuf))
1.64 kristaps 563: return(0);
564:
1.69 kristaps 565: while (' ' == buf[i])
1.65 kristaps 566: i++;
567:
568: /* Remaining must NOT be open/none. */
569:
1.69 kristaps 570: while (buf[i]) {
1.65 kristaps 571: j = 0;
1.69 kristaps 572: while (buf[i] && ' ' != buf[i] && j < DELIMSZ)
573: dbuf[j++] = buf[i++];
1.65 kristaps 574:
575: if (DELIMSZ == j)
576: return(0);
577:
1.69 kristaps 578: dbuf[j] = '\0';
1.70 kristaps 579: d = mdoc_isdelim(dbuf);
1.64 kristaps 580: if (DELIM_NONE == d || DELIM_OPEN == d)
1.65 kristaps 581: return(0);
582:
1.69 kristaps 583: while (' ' == buf[i])
1.64 kristaps 584: i++;
585: }
586:
1.69 kristaps 587: if ( ! (ARGS_NOWARN & fl) && i && ' ' == buf[i - 1])
588: mdoc_pmsg(m, ln, i - 1, MANDOCERR_EOLNSPACE);
589:
590: return('\0' == buf[i]);
1.1 kristaps 591: }
592:
1.63 kristaps 593: /*
594: * Match up an argument string (e.g., `-foo bar' having "foo") with the
595: * correrct identifier. It must apply to the given macro. If none was
596: * found (including bad matches), return MDOC_ARG_MAX.
597: */
1.57 kristaps 598: static enum mdocargt
1.35 kristaps 599: argv_a2arg(enum mdoct tok, const char *p)
1.1 kristaps 600: {
1.63 kristaps 601: enum mdocargt args[MDOC_ARG_MAX];
602: int i, len;
1.1 kristaps 603:
1.63 kristaps 604: len = 0;
1.1 kristaps 605:
606: switch (tok) {
607: case (MDOC_An):
1.63 kristaps 608: args[len++] = MDOC_Split;
609: args[len++] = MDOC_Nosplit;
1.1 kristaps 610: break;
611: case (MDOC_Bd):
1.63 kristaps 612: args[len++] = MDOC_Ragged;
613: args[len++] = MDOC_Unfilled;
614: args[len++] = MDOC_Filled;
615: args[len++] = MDOC_Literal;
616: args[len++] = MDOC_File;
617: args[len++] = MDOC_Offset;
618: args[len++] = MDOC_Compact;
619: args[len++] = MDOC_Centred;
1.1 kristaps 620: break;
621: case (MDOC_Bf):
1.63 kristaps 622: args[len++] = MDOC_Emphasis;
623: args[len++] = MDOC_Literal;
624: args[len++] = MDOC_Symbolic;
1.1 kristaps 625: break;
626: case (MDOC_Bk):
1.63 kristaps 627: args[len++] = MDOC_Words;
1.1 kristaps 628: break;
629: case (MDOC_Bl):
1.63 kristaps 630: args[len++] = MDOC_Bullet;
631: args[len++] = MDOC_Dash;
632: args[len++] = MDOC_Hyphen;
633: args[len++] = MDOC_Item;
634: args[len++] = MDOC_Enum;
635: args[len++] = MDOC_Tag;
636: args[len++] = MDOC_Diag;
637: args[len++] = MDOC_Hang;
638: args[len++] = MDOC_Ohang;
639: args[len++] = MDOC_Inset;
640: args[len++] = MDOC_Column;
641: args[len++] = MDOC_Width;
642: args[len++] = MDOC_Offset;
643: args[len++] = MDOC_Compact;
644: args[len++] = MDOC_Nested;
1.1 kristaps 645: break;
646: case (MDOC_Rv):
647: /* FALLTHROUGH */
648: case (MDOC_Ex):
1.63 kristaps 649: args[len++] = MDOC_Std;
1.1 kristaps 650: break;
651: default:
652: break;
653: }
1.63 kristaps 654:
655: for (i = 0; i < len; i++)
656: if (0 == strcmp(p, mdoc_argnames[args[i]]))
657: return(args[i]);
1.1 kristaps 658:
659: return(MDOC_ARG_MAX);
660: }
661:
662: static int
1.11 kristaps 663: argv_multi(struct mdoc *m, int line,
1.1 kristaps 664: struct mdoc_argv *v, int *pos, char *buf)
665: {
1.43 kristaps 666: enum margserr ac;
1.1 kristaps 667: char *p;
668:
669: for (v->sz = 0; ; v->sz++) {
670: if ('-' == buf[*pos])
671: break;
1.43 kristaps 672: ac = args(m, line, pos, buf, 0, &p);
673: if (ARGS_ERROR == ac)
1.1 kristaps 674: return(0);
1.43 kristaps 675: else if (ARGS_EOLN == ac)
1.1 kristaps 676: break;
677:
1.31 kristaps 678: if (0 == v->sz % MULTI_STEP)
679: v->value = mandoc_realloc(v->value,
1.1 kristaps 680: (v->sz + MULTI_STEP) * sizeof(char *));
1.31 kristaps 681:
682: v->value[(int)v->sz] = mandoc_strdup(p);
1.1 kristaps 683: }
684:
1.7 kristaps 685: return(1);
1.1 kristaps 686: }
687:
688: static int
1.11 kristaps 689: argv_opt_single(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: if ('-' == buf[*pos])
696: return(1);
697:
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: if (ARGS_EOLN == ac)
1.1 kristaps 702: return(1);
703:
704: v->sz = 1;
1.31 kristaps 705: v->value = mandoc_malloc(sizeof(char *));
706: v->value[0] = mandoc_strdup(p);
1.2 kristaps 707:
1.1 kristaps 708: return(1);
709: }
710:
711: /*
712: * Parse a single, mandatory value from the stream.
713: */
714: static int
1.11 kristaps 715: argv_single(struct mdoc *m, int line,
1.1 kristaps 716: struct mdoc_argv *v, int *pos, char *buf)
717: {
1.43 kristaps 718: int ppos;
719: enum margserr ac;
1.1 kristaps 720: char *p;
721:
722: ppos = *pos;
723:
1.43 kristaps 724: ac = args(m, line, pos, buf, 0, &p);
1.49 kristaps 725: if (ARGS_EOLN == ac) {
726: mdoc_pmsg(m, line, ppos, MANDOCERR_SYNTARGVCOUNT);
727: return(0);
728: } else if (ARGS_ERROR == ac)
1.1 kristaps 729: return(0);
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: * Determine rules for parsing arguments. Arguments can either accept
740: * no parameters, an optional single parameter, one parameter, or
741: * multiple parameters.
742: */
743: static int
744: argv(struct mdoc *mdoc, int line,
745: struct mdoc_argv *v, int *pos, char *buf)
746: {
747:
748: v->sz = 0;
749: v->value = NULL;
750:
1.68 kristaps 751: switch (argvflags[v->arg]) {
1.1 kristaps 752: case (ARGV_SINGLE):
753: return(argv_single(mdoc, line, v, pos, buf));
754: case (ARGV_MULTI):
755: return(argv_multi(mdoc, line, v, pos, buf));
756: case (ARGV_OPT_SINGLE):
757: return(argv_opt_single(mdoc, line, v, pos, buf));
1.68 kristaps 758: case (ARGV_NONE):
759: break;
1.1 kristaps 760: default:
1.68 kristaps 761: abort();
762: /* NOTREACHED */
1.1 kristaps 763: }
764:
765: return(1);
766: }
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