Annotation of mandoc/argv.c, Revision 1.52
1.52 ! kristaps 1: /* $Id: argv.c,v 1.51 2009/03/14 05:21:58 kristaps Exp $ */
1.1 kristaps 2: /*
3: * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the
7: * above copyright notice and this permission notice appear in all
8: * copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
11: * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
12: * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
13: * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
14: * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
15: * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
16: * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17: * PERFORMANCE OF THIS SOFTWARE.
18: */
1.44 kristaps 19: #include <sys/types.h>
20:
1.1 kristaps 21: #include <assert.h>
22: #include <ctype.h>
23: #include <err.h>
24: #include <stdlib.h>
25: #include <stdio.h>
26: #include <string.h>
27:
28: #include "private.h"
29:
1.20 kristaps 30: /*
1.27 kristaps 31: * Routines to parse arguments of macros. Arguments follow the syntax
32: * of `-arg [val [valN...]]'. Arguments come in all types: quoted
33: * arguments, multiple arguments per value, no-value arguments, etc.
1.39 kristaps 34: *
35: * There's no limit to the number or arguments that may be allocated.
1.20 kristaps 36: */
37:
1.24 kristaps 38: #define ARGS_QUOTED (1 << 0)
39: #define ARGS_DELIM (1 << 1)
40: #define ARGS_TABSEP (1 << 2)
1.38 kristaps 41: #define ARGS_ARGVLIKE (1 << 3)
1.15 kristaps 42:
1.36 kristaps 43: #define ARGV_NONE (1 << 0)
44: #define ARGV_SINGLE (1 << 1)
45: #define ARGV_MULTI (1 << 2)
46: #define ARGV_OPT_SINGLE (1 << 3)
47:
1.52 ! kristaps 48: #define MULTI_STEP 5
! 49:
1.39 kristaps 50: enum mwarn {
51: WQUOTPARM,
52: WARGVPARM,
53: WCOLEMPTY,
54: WTAILWS
55: };
56:
57: enum merr {
58: EQUOTTERM,
59: EARGVAL
60: };
61:
1.30 kristaps 62: static int argv_a2arg(int, const char *);
1.26 kristaps 63: static int args(struct mdoc *, int, int *,
64: char *, int, char **);
1.51 kristaps 65: static int argv(struct mdoc *, int,
1.39 kristaps 66: struct mdoc_argv *, int *, char *);
1.26 kristaps 67: static int argv_single(struct mdoc *, int,
1.39 kristaps 68: struct mdoc_argv *, int *, char *);
1.36 kristaps 69: static int argv_opt_single(struct mdoc *, int,
1.39 kristaps 70: struct mdoc_argv *, int *, char *);
1.26 kristaps 71: static int argv_multi(struct mdoc *, int,
1.39 kristaps 72: struct mdoc_argv *, int *, char *);
73: static int pwarn(struct mdoc *, int, int, enum mwarn);
74: static int perr(struct mdoc *, int, int, enum merr);
1.22 kristaps 75:
1.36 kristaps 76: /* Per-argument flags. */
77:
78: static int mdoc_argvflags[MDOC_ARG_MAX] = {
79: ARGV_NONE, /* MDOC_Split */
80: ARGV_NONE, /* MDOC_Nosplit */
81: ARGV_NONE, /* MDOC_Ragged */
82: ARGV_NONE, /* MDOC_Unfilled */
83: ARGV_NONE, /* MDOC_Literal */
84: ARGV_NONE, /* MDOC_File */
85: ARGV_SINGLE, /* MDOC_Offset */
86: ARGV_NONE, /* MDOC_Bullet */
87: ARGV_NONE, /* MDOC_Dash */
88: ARGV_NONE, /* MDOC_Hyphen */
89: ARGV_NONE, /* MDOC_Item */
90: ARGV_NONE, /* MDOC_Enum */
91: ARGV_NONE, /* MDOC_Tag */
92: ARGV_NONE, /* MDOC_Diag */
93: ARGV_NONE, /* MDOC_Hang */
94: ARGV_NONE, /* MDOC_Ohang */
95: ARGV_NONE, /* MDOC_Inset */
96: ARGV_MULTI, /* MDOC_Column */
97: ARGV_SINGLE, /* MDOC_Width */
98: ARGV_NONE, /* MDOC_Compact */
1.50 kristaps 99: ARGV_OPT_SINGLE, /* MDOC_Std */
1.36 kristaps 100: ARGV_NONE, /* MDOC_Filled */
101: ARGV_NONE, /* MDOC_Words */
102: ARGV_NONE, /* MDOC_Emphasis */
1.50 kristaps 103: ARGV_NONE, /* MDOC_Symbolic */
1.36 kristaps 104: ARGV_NONE /* MDOC_Symbolic */
105: };
106:
1.22 kristaps 107: static int mdoc_argflags[MDOC_MAX] = {
108: 0, /* \" */
109: 0, /* Dd */
110: 0, /* Dt */
111: 0, /* Os */
112: 0, /* Sh */
113: 0, /* Ss */
114: ARGS_DELIM, /* Pp */
115: ARGS_DELIM, /* D1 */
116: ARGS_DELIM, /* Dl */
117: 0, /* Bd */
118: 0, /* Ed */
119: 0, /* Bl */
120: 0, /* El */
1.32 kristaps 121: 0, /* It */
1.22 kristaps 122: ARGS_DELIM, /* Ad */
123: ARGS_DELIM, /* An */
124: ARGS_DELIM, /* Ar */
125: ARGS_QUOTED, /* Cd */
126: ARGS_DELIM, /* Cm */
127: ARGS_DELIM, /* Dv */
128: ARGS_DELIM, /* Er */
129: ARGS_DELIM, /* Ev */
130: 0, /* Ex */
131: ARGS_DELIM | ARGS_QUOTED, /* Fa */
132: 0, /* Fd */
133: ARGS_DELIM, /* Fl */
134: ARGS_DELIM | ARGS_QUOTED, /* Fn */
135: ARGS_DELIM | ARGS_QUOTED, /* Ft */
136: ARGS_DELIM, /* Ic */
137: 0, /* In */
138: ARGS_DELIM, /* Li */
139: 0, /* Nd */
140: ARGS_DELIM, /* Nm */
141: ARGS_DELIM, /* Op */
142: 0, /* Ot */
143: ARGS_DELIM, /* Pa */
144: 0, /* Rv */
1.38 kristaps 145: ARGS_DELIM | ARGS_ARGVLIKE, /* St */
1.22 kristaps 146: ARGS_DELIM, /* Va */
147: ARGS_DELIM, /* Vt */
148: ARGS_DELIM, /* Xr */
149: ARGS_QUOTED, /* %A */
150: ARGS_QUOTED, /* %B */
151: ARGS_QUOTED, /* %D */
152: ARGS_QUOTED, /* %I */
153: ARGS_QUOTED, /* %J */
154: ARGS_QUOTED, /* %N */
155: ARGS_QUOTED, /* %O */
156: ARGS_QUOTED, /* %P */
157: ARGS_QUOTED, /* %R */
158: ARGS_QUOTED, /* %T */
159: ARGS_QUOTED, /* %V */
160: ARGS_DELIM, /* Ac */
161: 0, /* Ao */
162: ARGS_DELIM, /* Aq */
163: ARGS_DELIM, /* At */
164: ARGS_DELIM, /* Bc */
165: 0, /* Bf */
166: 0, /* Bo */
167: ARGS_DELIM, /* Bq */
168: ARGS_DELIM, /* Bsx */
169: ARGS_DELIM, /* Bx */
170: 0, /* Db */
171: ARGS_DELIM, /* Dc */
172: 0, /* Do */
173: ARGS_DELIM, /* Dq */
174: ARGS_DELIM, /* Ec */
175: 0, /* Ef */
176: ARGS_DELIM, /* Em */
177: 0, /* Eo */
178: ARGS_DELIM, /* Fx */
179: ARGS_DELIM, /* Ms */
180: ARGS_DELIM, /* No */
181: ARGS_DELIM, /* Ns */
182: ARGS_DELIM, /* Nx */
183: ARGS_DELIM, /* Ox */
184: ARGS_DELIM, /* Pc */
185: ARGS_DELIM, /* Pf */
186: 0, /* Po */
187: ARGS_DELIM, /* Pq */
188: ARGS_DELIM, /* Qc */
189: ARGS_DELIM, /* Ql */
190: 0, /* Qo */
191: ARGS_DELIM, /* Qq */
192: 0, /* Re */
193: 0, /* Rs */
194: ARGS_DELIM, /* Sc */
195: 0, /* So */
196: ARGS_DELIM, /* Sq */
197: 0, /* Sm */
198: ARGS_DELIM, /* Sx */
199: ARGS_DELIM, /* Sy */
200: ARGS_DELIM, /* Tn */
201: ARGS_DELIM, /* Ux */
202: ARGS_DELIM, /* Xc */
203: 0, /* Xo */
204: 0, /* Fo */
205: 0, /* Fc */
206: 0, /* Oo */
207: ARGS_DELIM, /* Oc */
208: 0, /* Bk */
209: 0, /* Ek */
210: 0, /* Bt */
211: 0, /* Hf */
212: 0, /* Fr */
213: 0, /* Ud */
1.38 kristaps 214: 0, /* Lb */
1.42 kristaps 215: 0, /* Ap */
1.45 kristaps 216: ARGS_DELIM, /* Lp */
217: ARGS_DELIM | ARGS_QUOTED, /* Lk */
218: ARGS_DELIM | ARGS_QUOTED, /* Mt */
1.48 kristaps 219: ARGS_DELIM, /* Brq */
220: 0, /* Bro */
221: ARGS_DELIM, /* Brc */
1.50 kristaps 222: ARGS_QUOTED, /* %C */
1.52 ! kristaps 223: 0, /* Es */
! 224: 0, /* En */
1.22 kristaps 225: };
226:
1.1 kristaps 227:
1.39 kristaps 228: /*
229: * Parse an argument from line text. This comes in the form of -key
230: * [value0...], which may either have a single mandatory value, at least
231: * one mandatory value, an optional single value, or no value.
232: */
233: int
234: mdoc_argv(struct mdoc *mdoc, int line, int tok,
235: struct mdoc_arg **v, int *pos, char *buf)
236: {
237: int i;
1.46 kristaps 238: char *p, sv;
1.39 kristaps 239: struct mdoc_argv tmp;
240: struct mdoc_arg *arg;
241:
242: if (0 == buf[*pos])
243: return(ARGV_EOLN);
244:
1.52 ! kristaps 245: assert(' ' != buf[*pos]);
1.39 kristaps 246:
1.52 ! kristaps 247: if ('-' != buf[*pos] || ARGS_ARGVLIKE & mdoc_argflags[tok])
1.39 kristaps 248: return(ARGV_WORD);
249:
1.52 ! kristaps 250: /* Parse through to the first unescaped space. */
! 251:
1.39 kristaps 252: i = *pos;
253: p = &buf[++(*pos)];
254:
255: assert(*pos > 0);
256:
257: /* LINTED */
258: while (buf[*pos]) {
1.52 ! kristaps 259: if (' ' == buf[*pos])
1.39 kristaps 260: if ('\\' != buf[*pos - 1])
261: break;
262: (*pos)++;
263: }
264:
1.52 ! kristaps 265: /* XXX - save zeroed byte, if not an argument. */
1.46 kristaps 266:
1.47 kristaps 267: sv = 0;
1.46 kristaps 268: if (buf[*pos]) {
269: sv = buf[*pos];
1.39 kristaps 270: buf[(*pos)++] = 0;
1.46 kristaps 271: }
1.39 kristaps 272:
273: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
274: tmp.line = line;
275: tmp.pos = *pos;
276:
1.52 ! kristaps 277: /* See if our token accepts the argument. */
1.39 kristaps 278:
279: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
1.52 ! kristaps 280: /* XXX - restore saved zeroed byte. */
1.47 kristaps 281: if (sv)
282: buf[*pos - 1] = sv;
1.39 kristaps 283: if ( ! pwarn(mdoc, line, i, WARGVPARM))
284: return(ARGV_ERROR);
285: return(ARGV_WORD);
286: }
287:
1.52 ! kristaps 288: while (buf[*pos] && ' ' == buf[*pos])
1.39 kristaps 289: (*pos)++;
290:
1.51 kristaps 291: if ( ! argv(mdoc, line, &tmp, pos, buf))
1.39 kristaps 292: return(ARGV_ERROR);
293:
294: if (NULL == (arg = *v)) {
1.40 kristaps 295: *v = xcalloc(1, sizeof(struct mdoc_arg));
1.39 kristaps 296: arg = *v;
1.40 kristaps 297: }
1.39 kristaps 298:
299: arg->argc++;
300: arg->argv = xrealloc(arg->argv, arg->argc *
1.40 kristaps 301: sizeof(struct mdoc_argv));
1.39 kristaps 302:
303: (void)memcpy(&arg->argv[(int)arg->argc - 1],
304: &tmp, sizeof(struct mdoc_argv));
305:
306: return(ARGV_ARG);
307: }
308:
309:
310: void
311: mdoc_argv_free(struct mdoc_arg *p)
312: {
313: int i, j;
314:
1.41 kristaps 315: if (NULL == p)
316: return;
317:
1.40 kristaps 318: if (p->refcnt) {
319: --(p->refcnt);
320: if (p->refcnt)
321: return;
322: }
323:
324: assert(p->argc);
1.39 kristaps 325:
326: /* LINTED */
327: for (i = 0; i < (int)p->argc; i++) {
328: if (0 == p->argv[i].sz)
329: continue;
330: /* LINTED */
331: for (j = 0; j < (int)p->argv[i].sz; j++)
332: free(p->argv[i].value[j]);
1.40 kristaps 333:
1.39 kristaps 334: free(p->argv[i].value);
335: }
336:
1.40 kristaps 337: free(p->argv);
1.39 kristaps 338: free(p);
339: }
340:
341:
342:
1.24 kristaps 343: static int
1.39 kristaps 344: perr(struct mdoc *mdoc, int line, int pos, enum merr code)
1.25 kristaps 345: {
1.39 kristaps 346: char *p;
347:
348: p = NULL;
1.25 kristaps 349:
350: switch (code) {
351: case (EQUOTTERM):
1.39 kristaps 352: p = "unterminated quoted parameter";
1.25 kristaps 353: break;
354: case (EARGVAL):
1.39 kristaps 355: p = "argument requires a value";
1.25 kristaps 356: break;
357: }
1.39 kristaps 358:
359: assert(p);
360: return(mdoc_perr(mdoc, line, pos, p));
1.25 kristaps 361: }
362:
363:
364: static int
1.39 kristaps 365: pwarn(struct mdoc *mdoc, int line, int pos, enum mwarn code)
1.24 kristaps 366: {
1.39 kristaps 367: char *p;
1.24 kristaps 368: int c;
369:
1.39 kristaps 370: p = NULL;
371: c = WARN_SYNTAX;
372:
1.24 kristaps 373: switch (code) {
374: case (WQUOTPARM):
1.39 kristaps 375: p = "unexpected quoted parameter";
1.24 kristaps 376: break;
377: case (WARGVPARM):
1.39 kristaps 378: p = "argument-like parameter";
1.24 kristaps 379: break;
1.25 kristaps 380: case (WCOLEMPTY):
1.39 kristaps 381: p = "last list column is empty";
382: c = WARN_COMPAT;
1.25 kristaps 383: break;
384: case (WTAILWS):
1.39 kristaps 385: p = "trailing whitespace";
386: c = WARN_COMPAT;
1.25 kristaps 387: break;
1.24 kristaps 388: }
1.39 kristaps 389:
390: assert(p);
391: return(mdoc_pwarn(mdoc, line, pos, c, p));
1.24 kristaps 392: }
393:
394:
1.2 kristaps 395: int
1.22 kristaps 396: mdoc_args(struct mdoc *mdoc, int line,
397: int *pos, char *buf, int tok, char **v)
1.1 kristaps 398: {
1.26 kristaps 399: int fl, c, i;
1.22 kristaps 400: struct mdoc_node *n;
401:
1.24 kristaps 402: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
403:
404: /*
1.36 kristaps 405: * Override per-macro argument flags with context-specific ones.
406: * As of now, this is only valid for `It' depending on its list
407: * context.
1.24 kristaps 408: */
409:
1.36 kristaps 410: switch (tok) {
411: case (MDOC_It):
1.24 kristaps 412: for (n = mdoc->last; n; n = n->parent)
1.36 kristaps 413: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
414: break;
415:
1.24 kristaps 416: assert(n);
1.39 kristaps 417: c = (int)(n->args ? n->args->argc : 0);
1.24 kristaps 418: assert(c > 0);
1.26 kristaps 419:
1.36 kristaps 420: /*
421: * Using `Bl -column' adds ARGS_TABSEP to the arguments
422: * and invalidates ARGS_DELIM. Using `Bl -diag' allows
423: * for quoted arguments.
424: */
425:
1.26 kristaps 426: /* LINTED */
1.24 kristaps 427: for (i = 0; i < c; i++) {
1.39 kristaps 428: switch (n->args->argv[i].arg) {
1.35 kristaps 429: case (MDOC_Column):
430: fl |= ARGS_TABSEP;
431: fl &= ~ARGS_DELIM;
432: i = c;
433: break;
434: case (MDOC_Diag):
435: fl |= ARGS_QUOTED;
436: i = c;
437: break;
438: default:
439: break;
440: }
1.24 kristaps 441: }
1.39 kristaps 442: break;
1.36 kristaps 443: default:
444: break;
1.24 kristaps 445: }
446:
1.26 kristaps 447: return(args(mdoc, line, pos, buf, fl, v));
448: }
449:
450:
451: static int
452: args(struct mdoc *mdoc, int line,
453: int *pos, char *buf, int fl, char **v)
454: {
1.31 kristaps 455: int i;
1.26 kristaps 456: char *p, *pp;
457:
458: assert(*pos > 0);
459:
460: if (0 == buf[*pos])
461: return(ARGS_EOLN);
462:
463: if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
464: if ( ! pwarn(mdoc, line, *pos, WQUOTPARM))
465: return(ARGS_ERROR);
466:
1.38 kristaps 467: if ( ! (fl & ARGS_ARGVLIKE) && '-' == buf[*pos])
1.26 kristaps 468: if ( ! pwarn(mdoc, line, *pos, WARGVPARM))
469: return(ARGS_ERROR);
470:
1.24 kristaps 471: /*
472: * If the first character is a delimiter and we're to look for
473: * delimited strings, then pass down the buffer seeing if it
474: * follows the pattern of [[::delim::][ ]+]+.
475: */
476:
1.2 kristaps 477: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
1.31 kristaps 478: for (i = *pos; buf[i]; ) {
479: if ( ! mdoc_iscdelim(buf[i]))
1.2 kristaps 480: break;
481: i++;
1.34 kristaps 482: /* There must be at least one space... */
1.52 ! kristaps 483: if (0 == buf[i] || ' ' != buf[i])
1.34 kristaps 484: break;
485: i++;
1.52 ! kristaps 486: while (buf[i] && ' ' == buf[i])
1.2 kristaps 487: i++;
488: }
489: if (0 == buf[i]) {
490: *v = &buf[*pos];
491: return(ARGS_PUNCT);
492: }
493: }
494:
1.24 kristaps 495: /* First parse non-quoted strings. */
1.1 kristaps 496:
1.17 kristaps 497: if ('\"' != buf[*pos] || ! (ARGS_QUOTED & fl)) {
1.1 kristaps 498: *v = &buf[*pos];
499:
1.24 kristaps 500: /*
501: * Thar be dragons here! If we're tab-separated, search
1.52 ! kristaps 502: * ahead for either a tab or the `Ta' macro.
! 503: * If a `Ta' is detected, it must be space-buffered before and
! 504: * after. If either of these hold true, then prune out the
1.24 kristaps 505: * extra spaces and call it an argument.
506: */
507:
508: if (ARGS_TABSEP & fl) {
509: /* Scan ahead to unescaped tab. */
1.12 kristaps 510:
1.52 ! kristaps 511: p = strchr(*v, '\t');
1.24 kristaps 512:
513: /* Scan ahead to unescaped `Ta'. */
514:
515: for (pp = *v; ; pp++) {
516: if (NULL == (pp = strstr(pp, "Ta")))
517: break;
518: if (pp > *v && ' ' != *(pp - 1))
519: continue;
520: if (' ' == *(pp + 2) || 0 == *(pp + 2))
521: break;
522: }
523:
524: /* Choose delimiter tab/Ta. */
525:
526: if (p && pp)
527: p = (p < pp ? p : pp);
528: else if ( ! p && pp)
529: p = pp;
530:
531: /* Strip delimiter's preceding whitespace. */
532:
533: if (p && p > *v) {
534: pp = p - 1;
535: while (pp > *v && ' ' == *pp)
536: pp--;
537: if (pp == *v && ' ' == *pp)
538: *pp = 0;
539: else if (' ' == *pp)
540: *(pp + 1) = 0;
541: }
542:
543: /* ...in- and proceding whitespace. */
544:
545: if (p && ('\t' != *p)) {
546: *p++ = 0;
547: *p++ = 0;
548: } else if (p)
549: *p++ = 0;
550:
551: if (p) {
552: while (' ' == *p)
553: p++;
554: if (0 != *p)
555: *(p - 1) = 0;
1.33 kristaps 556: *pos += (int)(p - *v);
1.24 kristaps 557: }
558:
1.25 kristaps 559: if (p && 0 == *p)
560: if ( ! pwarn(mdoc, line, *pos, WCOLEMPTY))
561: return(0);
562: if (p && 0 == *p && p > *v && ' ' == *(p - 1))
563: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
564: return(0);
565:
1.26 kristaps 566: if (p)
1.49 kristaps 567: return(ARGS_PHRASE);
1.26 kristaps 568:
1.24 kristaps 569: /* Configure the eoln case, too. */
570:
1.26 kristaps 571: p = strchr(*v, 0);
572: assert(p);
573:
574: if (p > *v && ' ' == *(p - 1))
575: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
576: return(0);
1.33 kristaps 577: *pos += (int)(p - *v);
1.24 kristaps 578:
1.49 kristaps 579: return(ARGS_PHRASE);
1.24 kristaps 580: }
1.46 kristaps 581:
1.24 kristaps 582: /* Do non-tabsep look-ahead here. */
583:
584: if ( ! (ARGS_TABSEP & fl))
1.31 kristaps 585: while (buf[*pos]) {
1.52 ! kristaps 586: if (' ' == buf[*pos])
1.17 kristaps 587: if ('\\' != buf[*pos - 1])
588: break;
1.12 kristaps 589: (*pos)++;
1.17 kristaps 590: }
1.1 kristaps 591:
592: if (0 == buf[*pos])
1.2 kristaps 593: return(ARGS_WORD);
1.1 kristaps 594:
595: buf[(*pos)++] = 0;
1.12 kristaps 596:
1.1 kristaps 597: if (0 == buf[*pos])
1.2 kristaps 598: return(ARGS_WORD);
1.1 kristaps 599:
1.12 kristaps 600: if ( ! (ARGS_TABSEP & fl))
1.52 ! kristaps 601: while (buf[*pos] && ' ' == buf[*pos])
1.12 kristaps 602: (*pos)++;
1.1 kristaps 603:
604: if (buf[*pos])
1.2 kristaps 605: return(ARGS_WORD);
1.1 kristaps 606:
1.25 kristaps 607: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
1.2 kristaps 608: return(ARGS_ERROR);
1.1 kristaps 609:
1.2 kristaps 610: return(ARGS_WORD);
611: }
612:
613: /*
614: * If we're a quoted string (and quoted strings are allowed),
615: * then parse ahead to the next quote. If none's found, it's an
1.4 kristaps 616: * error. After, parse to the next word.
1.2 kristaps 617: */
1.1 kristaps 618:
619: *v = &buf[++(*pos)];
620:
621: while (buf[*pos] && '\"' != buf[*pos])
622: (*pos)++;
623:
624: if (0 == buf[*pos]) {
1.25 kristaps 625: (void)perr(mdoc, line, *pos, EQUOTTERM);
1.2 kristaps 626: return(ARGS_ERROR);
1.1 kristaps 627: }
628:
629: buf[(*pos)++] = 0;
630: if (0 == buf[*pos])
1.19 kristaps 631: return(ARGS_QWORD);
1.1 kristaps 632:
1.52 ! kristaps 633: while (buf[*pos] && ' ' == buf[*pos])
1.1 kristaps 634: (*pos)++;
635:
636: if (buf[*pos])
1.19 kristaps 637: return(ARGS_QWORD);
1.1 kristaps 638:
1.25 kristaps 639: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
1.2 kristaps 640: return(ARGS_ERROR);
641:
1.19 kristaps 642: return(ARGS_QWORD);
1.1 kristaps 643: }
644:
645:
1.2 kristaps 646: static int
1.30 kristaps 647: argv_a2arg(int tok, const char *argv)
1.1 kristaps 648: {
649:
1.36 kristaps 650: /*
651: * Parse an argument identifier from its text. XXX - this
652: * should really be table-driven to clarify the code.
653: *
654: * If you add an argument to the list, make sure that you
655: * register it here with its one or more macros!
656: */
657:
1.1 kristaps 658: switch (tok) {
1.6 kristaps 659: case (MDOC_An):
660: if (xstrcmp(argv, "split"))
661: return(MDOC_Split);
662: else if (xstrcmp(argv, "nosplit"))
663: return(MDOC_Nosplit);
664: break;
665:
1.2 kristaps 666: case (MDOC_Bd):
1.1 kristaps 667: if (xstrcmp(argv, "ragged"))
668: return(MDOC_Ragged);
669: else if (xstrcmp(argv, "unfilled"))
670: return(MDOC_Unfilled);
1.13 kristaps 671: else if (xstrcmp(argv, "filled"))
672: return(MDOC_Filled);
1.1 kristaps 673: else if (xstrcmp(argv, "literal"))
674: return(MDOC_Literal);
675: else if (xstrcmp(argv, "file"))
676: return(MDOC_File);
677: else if (xstrcmp(argv, "offset"))
678: return(MDOC_Offset);
1.49 kristaps 679: else if (xstrcmp(argv, "compact"))
680: return(MDOC_Compact);
1.2 kristaps 681: break;
682:
1.8 kristaps 683: case (MDOC_Bf):
684: if (xstrcmp(argv, "emphasis"))
685: return(MDOC_Emphasis);
686: else if (xstrcmp(argv, "literal"))
687: return(MDOC_Literal);
688: else if (xstrcmp(argv, "symbolic"))
689: return(MDOC_Symbolic);
690: break;
691:
1.7 kristaps 692: case (MDOC_Bk):
693: if (xstrcmp(argv, "words"))
694: return(MDOC_Words);
695: break;
696:
1.2 kristaps 697: case (MDOC_Bl):
698: if (xstrcmp(argv, "bullet"))
1.1 kristaps 699: return(MDOC_Bullet);
700: else if (xstrcmp(argv, "dash"))
701: return(MDOC_Dash);
702: else if (xstrcmp(argv, "hyphen"))
703: return(MDOC_Hyphen);
704: else if (xstrcmp(argv, "item"))
705: return(MDOC_Item);
706: else if (xstrcmp(argv, "enum"))
707: return(MDOC_Enum);
708: else if (xstrcmp(argv, "tag"))
709: return(MDOC_Tag);
710: else if (xstrcmp(argv, "diag"))
711: return(MDOC_Diag);
712: else if (xstrcmp(argv, "hang"))
713: return(MDOC_Hang);
714: else if (xstrcmp(argv, "ohang"))
715: return(MDOC_Ohang);
716: else if (xstrcmp(argv, "inset"))
717: return(MDOC_Inset);
718: else if (xstrcmp(argv, "column"))
719: return(MDOC_Column);
720: else if (xstrcmp(argv, "width"))
721: return(MDOC_Width);
1.2 kristaps 722: else if (xstrcmp(argv, "offset"))
723: return(MDOC_Offset);
1.1 kristaps 724: else if (xstrcmp(argv, "compact"))
725: return(MDOC_Compact);
1.50 kristaps 726: else if (xstrcmp(argv, "nested"))
727: return(MDOC_Nested);
1.2 kristaps 728: break;
1.3 kristaps 729:
730: case (MDOC_Rv):
731: /* FALLTHROUGH */
732: case (MDOC_Ex):
733: if (xstrcmp(argv, "std"))
734: return(MDOC_Std);
735: break;
1.1 kristaps 736: default:
1.8 kristaps 737: break;
1.1 kristaps 738: }
739:
740: return(MDOC_ARG_MAX);
741: }
742:
743:
1.2 kristaps 744: static int
1.26 kristaps 745: argv_multi(struct mdoc *mdoc, int line,
1.39 kristaps 746: struct mdoc_argv *v, int *pos, char *buf)
1.12 kristaps 747: {
748: int c, ppos;
749: char *p;
750:
751: ppos = *pos;
752:
1.39 kristaps 753: for (v->sz = 0; ; v->sz++) {
1.12 kristaps 754: if ('-' == buf[*pos])
755: break;
1.26 kristaps 756: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
1.39 kristaps 757: if (ARGS_ERROR == c)
1.12 kristaps 758: return(0);
1.39 kristaps 759: else if (ARGS_EOLN == c)
1.12 kristaps 760: break;
1.39 kristaps 761:
1.52 ! kristaps 762: if (0 == v->sz % MULTI_STEP)
1.39 kristaps 763: v->value = xrealloc(v->value,
1.52 ! kristaps 764: (v->sz + MULTI_STEP) * sizeof(char *));
1.39 kristaps 765:
1.40 kristaps 766: v->value[(int)v->sz] = xstrdup(p);
1.12 kristaps 767: }
768:
1.39 kristaps 769: if (v->sz)
1.12 kristaps 770: return(1);
771:
1.39 kristaps 772: return(perr(mdoc, line, ppos, EARGVAL));
1.12 kristaps 773: }
774:
775:
776: static int
1.36 kristaps 777: argv_opt_single(struct mdoc *mdoc, int line,
1.39 kristaps 778: struct mdoc_argv *v, int *pos, char *buf)
1.36 kristaps 779: {
1.39 kristaps 780: int c;
1.36 kristaps 781: char *p;
782:
783: if ('-' == buf[*pos])
784: return(1);
785:
786: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
787: if (ARGS_ERROR == c)
788: return(0);
789: if (ARGS_EOLN == c)
790: return(1);
791:
792: v->sz = 1;
793: v->value = xcalloc(1, sizeof(char *));
1.40 kristaps 794: v->value[0] = xstrdup(p);
1.36 kristaps 795: return(1);
796: }
797:
798:
799: /*
800: * Parse a single, mandatory value from the stream.
801: */
802: static int
1.26 kristaps 803: argv_single(struct mdoc *mdoc, int line,
1.39 kristaps 804: struct mdoc_argv *v, int *pos, char *buf)
1.1 kristaps 805: {
1.12 kristaps 806: int c, ppos;
1.1 kristaps 807: char *p;
808:
809: ppos = *pos;
810:
1.26 kristaps 811: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
1.12 kristaps 812: if (ARGS_ERROR == c)
813: return(0);
814: if (ARGS_EOLN == c)
1.36 kristaps 815: return(perr(mdoc, line, ppos, EARGVAL));
1.12 kristaps 816:
817: v->sz = 1;
818: v->value = xcalloc(1, sizeof(char *));
1.40 kristaps 819: v->value[0] = xstrdup(p);
1.12 kristaps 820: return(1);
821: }
822:
823:
1.36 kristaps 824: /*
825: * Determine rules for parsing arguments. Arguments can either accept
826: * no parameters, an optional single parameter, one parameter, or
827: * multiple parameters.
828: */
1.12 kristaps 829: static int
1.51 kristaps 830: argv(struct mdoc *mdoc, int line,
1.39 kristaps 831: struct mdoc_argv *v, int *pos, char *buf)
1.12 kristaps 832: {
833:
834: v->sz = 0;
835: v->value = NULL;
836:
1.50 kristaps 837: switch (mdoc_argvflags[v->arg]) {
1.36 kristaps 838: case (ARGV_SINGLE):
1.26 kristaps 839: return(argv_single(mdoc, line, v, pos, buf));
1.36 kristaps 840: case (ARGV_MULTI):
1.26 kristaps 841: return(argv_multi(mdoc, line, v, pos, buf));
1.36 kristaps 842: case (ARGV_OPT_SINGLE):
843: return(argv_opt_single(mdoc, line, v, pos, buf));
1.1 kristaps 844: default:
1.36 kristaps 845: /* ARGV_NONE */
1.6 kristaps 846: break;
1.1 kristaps 847: }
848:
849: return(1);
850: }
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