Annotation of mandoc/argv.c, Revision 1.56
1.56 ! kristaps 1: /* $Id: argv.c,v 1.55 2009/03/21 21:09:00 kristaps Exp $ */
1.1 kristaps 2: /*
1.53 kristaps 3: * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@openbsd.org>
1.1 kristaps 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:
1.56 ! kristaps 28: #include "libmdoc.h"
1.1 kristaps 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 */
1.53 kristaps 225: 0, /* Dx */
1.54 kristaps 226: ARGS_QUOTED, /* %Q */
1.22 kristaps 227: };
228:
1.1 kristaps 229:
1.39 kristaps 230: /*
231: * Parse an argument from line text. This comes in the form of -key
232: * [value0...], which may either have a single mandatory value, at least
233: * one mandatory value, an optional single value, or no value.
234: */
235: int
236: mdoc_argv(struct mdoc *mdoc, int line, int tok,
237: struct mdoc_arg **v, int *pos, char *buf)
238: {
239: int i;
1.46 kristaps 240: char *p, sv;
1.39 kristaps 241: struct mdoc_argv tmp;
242: struct mdoc_arg *arg;
243:
244: if (0 == buf[*pos])
245: return(ARGV_EOLN);
246:
1.52 kristaps 247: assert(' ' != buf[*pos]);
1.39 kristaps 248:
1.52 kristaps 249: if ('-' != buf[*pos] || ARGS_ARGVLIKE & mdoc_argflags[tok])
1.39 kristaps 250: return(ARGV_WORD);
251:
1.52 kristaps 252: /* Parse through to the first unescaped space. */
253:
1.39 kristaps 254: i = *pos;
255: p = &buf[++(*pos)];
256:
257: assert(*pos > 0);
258:
259: /* LINTED */
260: while (buf[*pos]) {
1.52 kristaps 261: if (' ' == buf[*pos])
1.39 kristaps 262: if ('\\' != buf[*pos - 1])
263: break;
264: (*pos)++;
265: }
266:
1.52 kristaps 267: /* XXX - save zeroed byte, if not an argument. */
1.46 kristaps 268:
1.47 kristaps 269: sv = 0;
1.46 kristaps 270: if (buf[*pos]) {
271: sv = buf[*pos];
1.39 kristaps 272: buf[(*pos)++] = 0;
1.46 kristaps 273: }
1.39 kristaps 274:
275: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
276: tmp.line = line;
277: tmp.pos = *pos;
278:
1.52 kristaps 279: /* See if our token accepts the argument. */
1.39 kristaps 280:
281: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
1.52 kristaps 282: /* XXX - restore saved zeroed byte. */
1.47 kristaps 283: if (sv)
284: buf[*pos - 1] = sv;
1.39 kristaps 285: if ( ! pwarn(mdoc, line, i, WARGVPARM))
286: return(ARGV_ERROR);
287: return(ARGV_WORD);
288: }
289:
1.52 kristaps 290: while (buf[*pos] && ' ' == buf[*pos])
1.39 kristaps 291: (*pos)++;
292:
1.51 kristaps 293: if ( ! argv(mdoc, line, &tmp, pos, buf))
1.39 kristaps 294: return(ARGV_ERROR);
295:
296: if (NULL == (arg = *v)) {
1.56 ! kristaps 297: if (NULL == (*v = calloc(1, sizeof(struct mdoc_arg))))
! 298: err(1, "calloc");
1.39 kristaps 299: arg = *v;
1.40 kristaps 300: }
1.39 kristaps 301:
302: arg->argc++;
303: arg->argv = xrealloc(arg->argv, arg->argc *
1.40 kristaps 304: sizeof(struct mdoc_argv));
1.39 kristaps 305:
306: (void)memcpy(&arg->argv[(int)arg->argc - 1],
307: &tmp, sizeof(struct mdoc_argv));
308:
309: return(ARGV_ARG);
310: }
311:
312:
313: void
314: mdoc_argv_free(struct mdoc_arg *p)
315: {
316: int i, j;
317:
1.41 kristaps 318: if (NULL == p)
319: return;
320:
1.40 kristaps 321: if (p->refcnt) {
322: --(p->refcnt);
323: if (p->refcnt)
324: return;
325: }
326:
327: assert(p->argc);
1.39 kristaps 328:
329: /* LINTED */
330: for (i = 0; i < (int)p->argc; i++) {
331: if (0 == p->argv[i].sz)
332: continue;
333: /* LINTED */
1.55 kristaps 334: for (j = 0; j < (int)p->argv[i].sz; j++)
1.39 kristaps 335: free(p->argv[i].value[j]);
1.40 kristaps 336:
1.39 kristaps 337: free(p->argv[i].value);
338: }
339:
1.40 kristaps 340: free(p->argv);
1.39 kristaps 341: free(p);
342: }
343:
344:
345:
1.24 kristaps 346: static int
1.39 kristaps 347: perr(struct mdoc *mdoc, int line, int pos, enum merr code)
1.25 kristaps 348: {
1.39 kristaps 349: char *p;
350:
351: p = NULL;
1.25 kristaps 352:
353: switch (code) {
354: case (EQUOTTERM):
1.39 kristaps 355: p = "unterminated quoted parameter";
1.25 kristaps 356: break;
357: case (EARGVAL):
1.39 kristaps 358: p = "argument requires a value";
1.25 kristaps 359: break;
360: }
1.39 kristaps 361:
362: assert(p);
363: return(mdoc_perr(mdoc, line, pos, p));
1.25 kristaps 364: }
365:
366:
367: static int
1.39 kristaps 368: pwarn(struct mdoc *mdoc, int line, int pos, enum mwarn code)
1.24 kristaps 369: {
1.39 kristaps 370: char *p;
1.24 kristaps 371: int c;
372:
1.39 kristaps 373: p = NULL;
374: c = WARN_SYNTAX;
375:
1.24 kristaps 376: switch (code) {
377: case (WQUOTPARM):
1.39 kristaps 378: p = "unexpected quoted parameter";
1.24 kristaps 379: break;
380: case (WARGVPARM):
1.39 kristaps 381: p = "argument-like parameter";
1.24 kristaps 382: break;
1.25 kristaps 383: case (WCOLEMPTY):
1.39 kristaps 384: p = "last list column is empty";
385: c = WARN_COMPAT;
1.25 kristaps 386: break;
387: case (WTAILWS):
1.39 kristaps 388: p = "trailing whitespace";
389: c = WARN_COMPAT;
1.25 kristaps 390: break;
1.24 kristaps 391: }
1.39 kristaps 392:
393: assert(p);
394: return(mdoc_pwarn(mdoc, line, pos, c, p));
1.24 kristaps 395: }
396:
397:
1.2 kristaps 398: int
1.22 kristaps 399: mdoc_args(struct mdoc *mdoc, int line,
400: int *pos, char *buf, int tok, char **v)
1.1 kristaps 401: {
1.26 kristaps 402: int fl, c, i;
1.22 kristaps 403: struct mdoc_node *n;
404:
1.24 kristaps 405: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
406:
407: /*
1.36 kristaps 408: * Override per-macro argument flags with context-specific ones.
409: * As of now, this is only valid for `It' depending on its list
410: * context.
1.24 kristaps 411: */
412:
1.36 kristaps 413: switch (tok) {
414: case (MDOC_It):
1.24 kristaps 415: for (n = mdoc->last; n; n = n->parent)
1.36 kristaps 416: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
417: break;
418:
1.24 kristaps 419: assert(n);
1.39 kristaps 420: c = (int)(n->args ? n->args->argc : 0);
1.24 kristaps 421: assert(c > 0);
1.26 kristaps 422:
1.36 kristaps 423: /*
424: * Using `Bl -column' adds ARGS_TABSEP to the arguments
425: * and invalidates ARGS_DELIM. Using `Bl -diag' allows
426: * for quoted arguments.
427: */
428:
1.26 kristaps 429: /* LINTED */
1.24 kristaps 430: for (i = 0; i < c; i++) {
1.39 kristaps 431: switch (n->args->argv[i].arg) {
1.35 kristaps 432: case (MDOC_Column):
433: fl |= ARGS_TABSEP;
434: fl &= ~ARGS_DELIM;
435: i = c;
436: break;
437: case (MDOC_Diag):
438: fl |= ARGS_QUOTED;
439: i = c;
440: break;
441: default:
442: break;
443: }
1.24 kristaps 444: }
1.39 kristaps 445: break;
1.36 kristaps 446: default:
447: break;
1.24 kristaps 448: }
449:
1.26 kristaps 450: return(args(mdoc, line, pos, buf, fl, v));
451: }
452:
453:
454: static int
455: args(struct mdoc *mdoc, int line,
456: int *pos, char *buf, int fl, char **v)
457: {
1.31 kristaps 458: int i;
1.26 kristaps 459: char *p, *pp;
460:
461: assert(*pos > 0);
462:
463: if (0 == buf[*pos])
464: return(ARGS_EOLN);
465:
466: if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
467: if ( ! pwarn(mdoc, line, *pos, WQUOTPARM))
468: return(ARGS_ERROR);
469:
1.38 kristaps 470: if ( ! (fl & ARGS_ARGVLIKE) && '-' == buf[*pos])
1.26 kristaps 471: if ( ! pwarn(mdoc, line, *pos, WARGVPARM))
472: return(ARGS_ERROR);
473:
1.24 kristaps 474: /*
475: * If the first character is a delimiter and we're to look for
476: * delimited strings, then pass down the buffer seeing if it
477: * follows the pattern of [[::delim::][ ]+]+.
478: */
479:
1.2 kristaps 480: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
1.31 kristaps 481: for (i = *pos; buf[i]; ) {
482: if ( ! mdoc_iscdelim(buf[i]))
1.2 kristaps 483: break;
484: i++;
1.34 kristaps 485: /* There must be at least one space... */
1.52 kristaps 486: if (0 == buf[i] || ' ' != buf[i])
1.34 kristaps 487: break;
488: i++;
1.52 kristaps 489: while (buf[i] && ' ' == buf[i])
1.2 kristaps 490: i++;
491: }
492: if (0 == buf[i]) {
493: *v = &buf[*pos];
494: return(ARGS_PUNCT);
495: }
496: }
497:
1.24 kristaps 498: /* First parse non-quoted strings. */
1.1 kristaps 499:
1.17 kristaps 500: if ('\"' != buf[*pos] || ! (ARGS_QUOTED & fl)) {
1.1 kristaps 501: *v = &buf[*pos];
502:
1.24 kristaps 503: /*
504: * Thar be dragons here! If we're tab-separated, search
1.52 kristaps 505: * ahead for either a tab or the `Ta' macro.
506: * If a `Ta' is detected, it must be space-buffered before and
507: * after. If either of these hold true, then prune out the
1.24 kristaps 508: * extra spaces and call it an argument.
509: */
510:
511: if (ARGS_TABSEP & fl) {
512: /* Scan ahead to unescaped tab. */
1.12 kristaps 513:
1.52 kristaps 514: p = strchr(*v, '\t');
1.24 kristaps 515:
516: /* Scan ahead to unescaped `Ta'. */
517:
518: for (pp = *v; ; pp++) {
519: if (NULL == (pp = strstr(pp, "Ta")))
520: break;
521: if (pp > *v && ' ' != *(pp - 1))
522: continue;
523: if (' ' == *(pp + 2) || 0 == *(pp + 2))
524: break;
525: }
526:
527: /* Choose delimiter tab/Ta. */
528:
529: if (p && pp)
530: p = (p < pp ? p : pp);
531: else if ( ! p && pp)
532: p = pp;
533:
534: /* Strip delimiter's preceding whitespace. */
535:
536: if (p && p > *v) {
537: pp = p - 1;
538: while (pp > *v && ' ' == *pp)
539: pp--;
540: if (pp == *v && ' ' == *pp)
541: *pp = 0;
542: else if (' ' == *pp)
543: *(pp + 1) = 0;
544: }
545:
546: /* ...in- and proceding whitespace. */
547:
548: if (p && ('\t' != *p)) {
549: *p++ = 0;
550: *p++ = 0;
551: } else if (p)
552: *p++ = 0;
553:
554: if (p) {
555: while (' ' == *p)
556: p++;
557: if (0 != *p)
558: *(p - 1) = 0;
1.33 kristaps 559: *pos += (int)(p - *v);
1.24 kristaps 560: }
561:
1.25 kristaps 562: if (p && 0 == *p)
563: if ( ! pwarn(mdoc, line, *pos, WCOLEMPTY))
564: return(0);
565: if (p && 0 == *p && p > *v && ' ' == *(p - 1))
566: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
567: return(0);
568:
1.26 kristaps 569: if (p)
1.49 kristaps 570: return(ARGS_PHRASE);
1.26 kristaps 571:
1.24 kristaps 572: /* Configure the eoln case, too. */
573:
1.26 kristaps 574: p = strchr(*v, 0);
575: assert(p);
576:
577: if (p > *v && ' ' == *(p - 1))
578: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
579: return(0);
1.33 kristaps 580: *pos += (int)(p - *v);
1.24 kristaps 581:
1.49 kristaps 582: return(ARGS_PHRASE);
1.24 kristaps 583: }
1.46 kristaps 584:
1.24 kristaps 585: /* Do non-tabsep look-ahead here. */
586:
587: if ( ! (ARGS_TABSEP & fl))
1.31 kristaps 588: while (buf[*pos]) {
1.52 kristaps 589: if (' ' == buf[*pos])
1.17 kristaps 590: if ('\\' != buf[*pos - 1])
591: break;
1.12 kristaps 592: (*pos)++;
1.17 kristaps 593: }
1.1 kristaps 594:
595: if (0 == buf[*pos])
1.2 kristaps 596: return(ARGS_WORD);
1.1 kristaps 597:
598: buf[(*pos)++] = 0;
1.12 kristaps 599:
1.1 kristaps 600: if (0 == buf[*pos])
1.2 kristaps 601: return(ARGS_WORD);
1.1 kristaps 602:
1.12 kristaps 603: if ( ! (ARGS_TABSEP & fl))
1.52 kristaps 604: while (buf[*pos] && ' ' == buf[*pos])
1.12 kristaps 605: (*pos)++;
1.1 kristaps 606:
607: if (buf[*pos])
1.2 kristaps 608: return(ARGS_WORD);
1.1 kristaps 609:
1.25 kristaps 610: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
1.2 kristaps 611: return(ARGS_ERROR);
1.1 kristaps 612:
1.2 kristaps 613: return(ARGS_WORD);
614: }
615:
616: /*
617: * If we're a quoted string (and quoted strings are allowed),
618: * then parse ahead to the next quote. If none's found, it's an
1.4 kristaps 619: * error. After, parse to the next word.
1.2 kristaps 620: */
1.1 kristaps 621:
622: *v = &buf[++(*pos)];
623:
624: while (buf[*pos] && '\"' != buf[*pos])
625: (*pos)++;
626:
627: if (0 == buf[*pos]) {
1.25 kristaps 628: (void)perr(mdoc, line, *pos, EQUOTTERM);
1.2 kristaps 629: return(ARGS_ERROR);
1.1 kristaps 630: }
631:
632: buf[(*pos)++] = 0;
633: if (0 == buf[*pos])
1.19 kristaps 634: return(ARGS_QWORD);
1.1 kristaps 635:
1.52 kristaps 636: while (buf[*pos] && ' ' == buf[*pos])
1.1 kristaps 637: (*pos)++;
638:
639: if (buf[*pos])
1.19 kristaps 640: return(ARGS_QWORD);
1.1 kristaps 641:
1.25 kristaps 642: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
1.2 kristaps 643: return(ARGS_ERROR);
644:
1.19 kristaps 645: return(ARGS_QWORD);
1.1 kristaps 646: }
647:
648:
1.2 kristaps 649: static int
1.30 kristaps 650: argv_a2arg(int tok, const char *argv)
1.1 kristaps 651: {
652:
1.36 kristaps 653: /*
654: * Parse an argument identifier from its text. XXX - this
655: * should really be table-driven to clarify the code.
656: *
657: * If you add an argument to the list, make sure that you
658: * register it here with its one or more macros!
659: */
660:
1.1 kristaps 661: switch (tok) {
1.6 kristaps 662: case (MDOC_An):
663: if (xstrcmp(argv, "split"))
664: return(MDOC_Split);
665: else if (xstrcmp(argv, "nosplit"))
666: return(MDOC_Nosplit);
667: break;
668:
1.2 kristaps 669: case (MDOC_Bd):
1.1 kristaps 670: if (xstrcmp(argv, "ragged"))
671: return(MDOC_Ragged);
672: else if (xstrcmp(argv, "unfilled"))
673: return(MDOC_Unfilled);
1.13 kristaps 674: else if (xstrcmp(argv, "filled"))
675: return(MDOC_Filled);
1.1 kristaps 676: else if (xstrcmp(argv, "literal"))
677: return(MDOC_Literal);
678: else if (xstrcmp(argv, "file"))
679: return(MDOC_File);
680: else if (xstrcmp(argv, "offset"))
681: return(MDOC_Offset);
1.49 kristaps 682: else if (xstrcmp(argv, "compact"))
683: return(MDOC_Compact);
1.2 kristaps 684: break;
685:
1.8 kristaps 686: case (MDOC_Bf):
687: if (xstrcmp(argv, "emphasis"))
688: return(MDOC_Emphasis);
689: else if (xstrcmp(argv, "literal"))
690: return(MDOC_Literal);
691: else if (xstrcmp(argv, "symbolic"))
692: return(MDOC_Symbolic);
693: break;
694:
1.7 kristaps 695: case (MDOC_Bk):
696: if (xstrcmp(argv, "words"))
697: return(MDOC_Words);
698: break;
699:
1.2 kristaps 700: case (MDOC_Bl):
701: if (xstrcmp(argv, "bullet"))
1.1 kristaps 702: return(MDOC_Bullet);
703: else if (xstrcmp(argv, "dash"))
704: return(MDOC_Dash);
705: else if (xstrcmp(argv, "hyphen"))
706: return(MDOC_Hyphen);
707: else if (xstrcmp(argv, "item"))
708: return(MDOC_Item);
709: else if (xstrcmp(argv, "enum"))
710: return(MDOC_Enum);
711: else if (xstrcmp(argv, "tag"))
712: return(MDOC_Tag);
713: else if (xstrcmp(argv, "diag"))
714: return(MDOC_Diag);
715: else if (xstrcmp(argv, "hang"))
716: return(MDOC_Hang);
717: else if (xstrcmp(argv, "ohang"))
718: return(MDOC_Ohang);
719: else if (xstrcmp(argv, "inset"))
720: return(MDOC_Inset);
721: else if (xstrcmp(argv, "column"))
722: return(MDOC_Column);
723: else if (xstrcmp(argv, "width"))
724: return(MDOC_Width);
1.2 kristaps 725: else if (xstrcmp(argv, "offset"))
726: return(MDOC_Offset);
1.1 kristaps 727: else if (xstrcmp(argv, "compact"))
728: return(MDOC_Compact);
1.50 kristaps 729: else if (xstrcmp(argv, "nested"))
730: return(MDOC_Nested);
1.2 kristaps 731: break;
1.3 kristaps 732:
733: case (MDOC_Rv):
734: /* FALLTHROUGH */
735: case (MDOC_Ex):
736: if (xstrcmp(argv, "std"))
737: return(MDOC_Std);
738: break;
1.1 kristaps 739: default:
1.8 kristaps 740: break;
1.1 kristaps 741: }
742:
743: return(MDOC_ARG_MAX);
744: }
745:
746:
1.2 kristaps 747: static int
1.26 kristaps 748: argv_multi(struct mdoc *mdoc, int line,
1.39 kristaps 749: struct mdoc_argv *v, int *pos, char *buf)
1.12 kristaps 750: {
751: int c, ppos;
752: char *p;
753:
754: ppos = *pos;
755:
1.39 kristaps 756: for (v->sz = 0; ; v->sz++) {
1.12 kristaps 757: if ('-' == buf[*pos])
758: break;
1.26 kristaps 759: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
1.39 kristaps 760: if (ARGS_ERROR == c)
1.12 kristaps 761: return(0);
1.39 kristaps 762: else if (ARGS_EOLN == c)
1.12 kristaps 763: break;
1.39 kristaps 764:
1.52 kristaps 765: if (0 == v->sz % MULTI_STEP)
1.39 kristaps 766: v->value = xrealloc(v->value,
1.52 kristaps 767: (v->sz + MULTI_STEP) * sizeof(char *));
1.39 kristaps 768:
1.40 kristaps 769: v->value[(int)v->sz] = xstrdup(p);
1.12 kristaps 770: }
771:
1.39 kristaps 772: if (v->sz)
1.12 kristaps 773: return(1);
774:
1.39 kristaps 775: return(perr(mdoc, line, ppos, EARGVAL));
1.12 kristaps 776: }
777:
778:
779: static int
1.36 kristaps 780: argv_opt_single(struct mdoc *mdoc, int line,
1.39 kristaps 781: struct mdoc_argv *v, int *pos, char *buf)
1.36 kristaps 782: {
1.39 kristaps 783: int c;
1.36 kristaps 784: char *p;
785:
786: if ('-' == buf[*pos])
787: return(1);
788:
789: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
790: if (ARGS_ERROR == c)
791: return(0);
792: if (ARGS_EOLN == c)
793: return(1);
794:
795: v->sz = 1;
1.56 ! kristaps 796: if (NULL == (v->value = calloc(1, sizeof(char *))))
! 797: err(1, "calloc");
! 798: if (NULL == (v->value[0] = strdup(p)))
! 799: err(1, "strdup");
1.36 kristaps 800: return(1);
801: }
802:
803:
804: /*
805: * Parse a single, mandatory value from the stream.
806: */
807: static int
1.26 kristaps 808: argv_single(struct mdoc *mdoc, int line,
1.39 kristaps 809: struct mdoc_argv *v, int *pos, char *buf)
1.1 kristaps 810: {
1.12 kristaps 811: int c, ppos;
1.1 kristaps 812: char *p;
813:
814: ppos = *pos;
815:
1.26 kristaps 816: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
1.12 kristaps 817: if (ARGS_ERROR == c)
818: return(0);
819: if (ARGS_EOLN == c)
1.36 kristaps 820: return(perr(mdoc, line, ppos, EARGVAL));
1.12 kristaps 821:
822: v->sz = 1;
1.56 ! kristaps 823: if (NULL == (v->value = calloc(1, sizeof(char *))))
! 824: err(1, "calloc");
! 825: if (NULL == (v->value[0] = strdup(p)))
! 826: err(1, "strdup");
1.12 kristaps 827: return(1);
828: }
829:
830:
1.36 kristaps 831: /*
832: * Determine rules for parsing arguments. Arguments can either accept
833: * no parameters, an optional single parameter, one parameter, or
834: * multiple parameters.
835: */
1.12 kristaps 836: static int
1.51 kristaps 837: argv(struct mdoc *mdoc, int line,
1.39 kristaps 838: struct mdoc_argv *v, int *pos, char *buf)
1.12 kristaps 839: {
840:
841: v->sz = 0;
842: v->value = NULL;
843:
1.50 kristaps 844: switch (mdoc_argvflags[v->arg]) {
1.36 kristaps 845: case (ARGV_SINGLE):
1.26 kristaps 846: return(argv_single(mdoc, line, v, pos, buf));
1.36 kristaps 847: case (ARGV_MULTI):
1.26 kristaps 848: return(argv_multi(mdoc, line, v, pos, buf));
1.36 kristaps 849: case (ARGV_OPT_SINGLE):
850: return(argv_opt_single(mdoc, line, v, pos, buf));
1.1 kristaps 851: default:
1.36 kristaps 852: /* ARGV_NONE */
1.6 kristaps 853: break;
1.1 kristaps 854: }
855:
856: return(1);
857: }
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