Annotation of mandoc/argv.c, Revision 1.50
1.50 ! kristaps 1: /* $Id: argv.c,v 1.49 2009/03/12 02:57:35 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:
1.39 kristaps 48: enum mwarn {
49: WQUOTPARM,
50: WARGVPARM,
51: WCOLEMPTY,
52: WTAILWS
53: };
54:
55: enum merr {
56: EQUOTTERM,
57: EARGVAL
58: };
59:
1.30 kristaps 60: static int argv_a2arg(int, const char *);
1.26 kristaps 61: static int args(struct mdoc *, int, int *,
62: char *, int, char **);
1.37 kristaps 63: static int argv(struct mdoc *, int, int,
1.39 kristaps 64: struct mdoc_argv *, int *, char *);
1.26 kristaps 65: static int argv_single(struct mdoc *, int,
1.39 kristaps 66: struct mdoc_argv *, int *, char *);
1.36 kristaps 67: static int argv_opt_single(struct mdoc *, int,
1.39 kristaps 68: struct mdoc_argv *, int *, char *);
1.26 kristaps 69: static int argv_multi(struct mdoc *, int,
1.39 kristaps 70: struct mdoc_argv *, int *, char *);
71: static int pwarn(struct mdoc *, int, int, enum mwarn);
72: static int perr(struct mdoc *, int, int, enum merr);
1.22 kristaps 73:
1.36 kristaps 74: /* Per-argument flags. */
75:
76: static int mdoc_argvflags[MDOC_ARG_MAX] = {
77: ARGV_NONE, /* MDOC_Split */
78: ARGV_NONE, /* MDOC_Nosplit */
79: ARGV_NONE, /* MDOC_Ragged */
80: ARGV_NONE, /* MDOC_Unfilled */
81: ARGV_NONE, /* MDOC_Literal */
82: ARGV_NONE, /* MDOC_File */
83: ARGV_SINGLE, /* MDOC_Offset */
84: ARGV_NONE, /* MDOC_Bullet */
85: ARGV_NONE, /* MDOC_Dash */
86: ARGV_NONE, /* MDOC_Hyphen */
87: ARGV_NONE, /* MDOC_Item */
88: ARGV_NONE, /* MDOC_Enum */
89: ARGV_NONE, /* MDOC_Tag */
90: ARGV_NONE, /* MDOC_Diag */
91: ARGV_NONE, /* MDOC_Hang */
92: ARGV_NONE, /* MDOC_Ohang */
93: ARGV_NONE, /* MDOC_Inset */
94: ARGV_MULTI, /* MDOC_Column */
95: ARGV_SINGLE, /* MDOC_Width */
96: ARGV_NONE, /* MDOC_Compact */
1.50 ! kristaps 97: ARGV_OPT_SINGLE, /* MDOC_Std */
1.36 kristaps 98: ARGV_NONE, /* MDOC_Filled */
99: ARGV_NONE, /* MDOC_Words */
100: ARGV_NONE, /* MDOC_Emphasis */
1.50 ! kristaps 101: ARGV_NONE, /* MDOC_Symbolic */
1.36 kristaps 102: ARGV_NONE /* MDOC_Symbolic */
103: };
104:
1.22 kristaps 105: static int mdoc_argflags[MDOC_MAX] = {
106: 0, /* \" */
107: 0, /* Dd */
108: 0, /* Dt */
109: 0, /* Os */
110: 0, /* Sh */
111: 0, /* Ss */
112: ARGS_DELIM, /* Pp */
113: ARGS_DELIM, /* D1 */
114: ARGS_DELIM, /* Dl */
115: 0, /* Bd */
116: 0, /* Ed */
117: 0, /* Bl */
118: 0, /* El */
1.32 kristaps 119: 0, /* It */
1.22 kristaps 120: ARGS_DELIM, /* Ad */
121: ARGS_DELIM, /* An */
122: ARGS_DELIM, /* Ar */
123: ARGS_QUOTED, /* Cd */
124: ARGS_DELIM, /* Cm */
125: ARGS_DELIM, /* Dv */
126: ARGS_DELIM, /* Er */
127: ARGS_DELIM, /* Ev */
128: 0, /* Ex */
129: ARGS_DELIM | ARGS_QUOTED, /* Fa */
130: 0, /* Fd */
131: ARGS_DELIM, /* Fl */
132: ARGS_DELIM | ARGS_QUOTED, /* Fn */
133: ARGS_DELIM | ARGS_QUOTED, /* Ft */
134: ARGS_DELIM, /* Ic */
135: 0, /* In */
136: ARGS_DELIM, /* Li */
137: 0, /* Nd */
138: ARGS_DELIM, /* Nm */
139: ARGS_DELIM, /* Op */
140: 0, /* Ot */
141: ARGS_DELIM, /* Pa */
142: 0, /* Rv */
1.38 kristaps 143: ARGS_DELIM | ARGS_ARGVLIKE, /* St */
1.22 kristaps 144: ARGS_DELIM, /* Va */
145: ARGS_DELIM, /* Vt */
146: ARGS_DELIM, /* Xr */
147: ARGS_QUOTED, /* %A */
148: ARGS_QUOTED, /* %B */
149: ARGS_QUOTED, /* %D */
150: ARGS_QUOTED, /* %I */
151: ARGS_QUOTED, /* %J */
152: ARGS_QUOTED, /* %N */
153: ARGS_QUOTED, /* %O */
154: ARGS_QUOTED, /* %P */
155: ARGS_QUOTED, /* %R */
156: ARGS_QUOTED, /* %T */
157: ARGS_QUOTED, /* %V */
158: ARGS_DELIM, /* Ac */
159: 0, /* Ao */
160: ARGS_DELIM, /* Aq */
161: ARGS_DELIM, /* At */
162: ARGS_DELIM, /* Bc */
163: 0, /* Bf */
164: 0, /* Bo */
165: ARGS_DELIM, /* Bq */
166: ARGS_DELIM, /* Bsx */
167: ARGS_DELIM, /* Bx */
168: 0, /* Db */
169: ARGS_DELIM, /* Dc */
170: 0, /* Do */
171: ARGS_DELIM, /* Dq */
172: ARGS_DELIM, /* Ec */
173: 0, /* Ef */
174: ARGS_DELIM, /* Em */
175: 0, /* Eo */
176: ARGS_DELIM, /* Fx */
177: ARGS_DELIM, /* Ms */
178: ARGS_DELIM, /* No */
179: ARGS_DELIM, /* Ns */
180: ARGS_DELIM, /* Nx */
181: ARGS_DELIM, /* Ox */
182: ARGS_DELIM, /* Pc */
183: ARGS_DELIM, /* Pf */
184: 0, /* Po */
185: ARGS_DELIM, /* Pq */
186: ARGS_DELIM, /* Qc */
187: ARGS_DELIM, /* Ql */
188: 0, /* Qo */
189: ARGS_DELIM, /* Qq */
190: 0, /* Re */
191: 0, /* Rs */
192: ARGS_DELIM, /* Sc */
193: 0, /* So */
194: ARGS_DELIM, /* Sq */
195: 0, /* Sm */
196: ARGS_DELIM, /* Sx */
197: ARGS_DELIM, /* Sy */
198: ARGS_DELIM, /* Tn */
199: ARGS_DELIM, /* Ux */
200: ARGS_DELIM, /* Xc */
201: 0, /* Xo */
202: 0, /* Fo */
203: 0, /* Fc */
204: 0, /* Oo */
205: ARGS_DELIM, /* Oc */
206: 0, /* Bk */
207: 0, /* Ek */
208: 0, /* Bt */
209: 0, /* Hf */
210: 0, /* Fr */
211: 0, /* Ud */
1.38 kristaps 212: 0, /* Lb */
1.42 kristaps 213: 0, /* Ap */
1.45 kristaps 214: ARGS_DELIM, /* Lp */
215: ARGS_DELIM | ARGS_QUOTED, /* Lk */
216: ARGS_DELIM | ARGS_QUOTED, /* Mt */
1.48 kristaps 217: ARGS_DELIM, /* Brq */
218: 0, /* Bro */
219: ARGS_DELIM, /* Brc */
1.50 ! kristaps 220: ARGS_QUOTED, /* %C */
1.22 kristaps 221: };
222:
1.1 kristaps 223:
1.39 kristaps 224: /*
225: * Parse an argument from line text. This comes in the form of -key
226: * [value0...], which may either have a single mandatory value, at least
227: * one mandatory value, an optional single value, or no value.
228: */
229: int
230: mdoc_argv(struct mdoc *mdoc, int line, int tok,
231: struct mdoc_arg **v, int *pos, char *buf)
232: {
233: int i;
1.46 kristaps 234: char *p, sv;
1.39 kristaps 235: struct mdoc_argv tmp;
236: struct mdoc_arg *arg;
237:
238: if (0 == buf[*pos])
239: return(ARGV_EOLN);
240:
241: assert( ! isspace((u_char)buf[*pos]));
242:
243: if ('-' != buf[*pos])
244: return(ARGV_WORD);
245:
246: i = *pos;
247: p = &buf[++(*pos)];
248:
249: assert(*pos > 0);
250:
251: /* LINTED */
252: while (buf[*pos]) {
253: if (isspace((u_char)buf[*pos]))
254: if ('\\' != buf[*pos - 1])
255: break;
256: (*pos)++;
257: }
258:
1.46 kristaps 259: /*
260: * XXX: save the nullified byte as we'll restore it if this
1.47 kristaps 261: * doesn't end up being a command after all. This is a little
262: * bit hacky. I don't like it, but it works for now.
1.46 kristaps 263: */
264:
1.47 kristaps 265: sv = 0;
1.46 kristaps 266: if (buf[*pos]) {
267: sv = buf[*pos];
1.39 kristaps 268: buf[(*pos)++] = 0;
1.46 kristaps 269: }
1.39 kristaps 270:
271: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
272: tmp.line = line;
273: tmp.pos = *pos;
274:
275: /*
276: * We now parse out the per-macro arguments. XXX - this can be
277: * made much cleaner using per-argument tables. See argv_a2arg
278: * for details.
279: */
280:
281: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
1.47 kristaps 282: /* XXX - restore saved byte. */
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:
290: while (buf[*pos] && isspace((u_char)buf[*pos]))
291: (*pos)++;
292:
293: /* FIXME: whitespace if no value. */
294:
295: if ( ! argv(mdoc, tok, line, &tmp, pos, buf))
296: return(ARGV_ERROR);
297:
298: if (NULL == (arg = *v)) {
1.40 kristaps 299: *v = xcalloc(1, sizeof(struct mdoc_arg));
1.39 kristaps 300: arg = *v;
1.40 kristaps 301: }
1.39 kristaps 302:
303: arg->argc++;
304: arg->argv = xrealloc(arg->argv, arg->argc *
1.40 kristaps 305: sizeof(struct mdoc_argv));
1.39 kristaps 306:
307: (void)memcpy(&arg->argv[(int)arg->argc - 1],
308: &tmp, sizeof(struct mdoc_argv));
309:
310: return(ARGV_ARG);
311: }
312:
313:
314: void
315: mdoc_argv_free(struct mdoc_arg *p)
316: {
317: int i, j;
318:
1.41 kristaps 319: if (NULL == p)
320: return;
321:
1.40 kristaps 322: if (p->refcnt) {
323: --(p->refcnt);
324: if (p->refcnt)
325: return;
326: }
327:
328: assert(p->argc);
1.39 kristaps 329:
330: /* LINTED */
331: for (i = 0; i < (int)p->argc; i++) {
332: if (0 == p->argv[i].sz)
333: continue;
334: /* LINTED */
335: for (j = 0; j < (int)p->argv[i].sz; j++)
336: free(p->argv[i].value[j]);
1.40 kristaps 337:
1.39 kristaps 338: free(p->argv[i].value);
339: }
340:
1.40 kristaps 341: free(p->argv);
1.39 kristaps 342: free(p);
343: }
344:
345:
346:
1.24 kristaps 347: static int
1.39 kristaps 348: perr(struct mdoc *mdoc, int line, int pos, enum merr code)
1.25 kristaps 349: {
1.39 kristaps 350: char *p;
351:
352: p = NULL;
1.25 kristaps 353:
354: switch (code) {
355: case (EQUOTTERM):
1.39 kristaps 356: p = "unterminated quoted parameter";
1.25 kristaps 357: break;
358: case (EARGVAL):
1.39 kristaps 359: p = "argument requires a value";
1.25 kristaps 360: break;
361: }
1.39 kristaps 362:
363: assert(p);
364: return(mdoc_perr(mdoc, line, pos, p));
1.25 kristaps 365: }
366:
367:
368: static int
1.39 kristaps 369: pwarn(struct mdoc *mdoc, int line, int pos, enum mwarn code)
1.24 kristaps 370: {
1.39 kristaps 371: char *p;
1.24 kristaps 372: int c;
373:
1.39 kristaps 374: p = NULL;
375: c = WARN_SYNTAX;
376:
1.24 kristaps 377: switch (code) {
378: case (WQUOTPARM):
1.39 kristaps 379: p = "unexpected quoted parameter";
1.24 kristaps 380: break;
381: case (WARGVPARM):
1.39 kristaps 382: p = "argument-like parameter";
1.24 kristaps 383: break;
1.25 kristaps 384: case (WCOLEMPTY):
1.39 kristaps 385: p = "last list column is empty";
386: c = WARN_COMPAT;
1.25 kristaps 387: break;
388: case (WTAILWS):
1.39 kristaps 389: p = "trailing whitespace";
390: c = WARN_COMPAT;
1.25 kristaps 391: break;
1.24 kristaps 392: }
1.39 kristaps 393:
394: assert(p);
395: return(mdoc_pwarn(mdoc, line, pos, c, p));
1.24 kristaps 396: }
397:
398:
1.2 kristaps 399: int
1.22 kristaps 400: mdoc_args(struct mdoc *mdoc, int line,
401: int *pos, char *buf, int tok, char **v)
1.1 kristaps 402: {
1.26 kristaps 403: int fl, c, i;
1.22 kristaps 404: struct mdoc_node *n;
405:
1.24 kristaps 406: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
407:
408: /*
1.36 kristaps 409: * Override per-macro argument flags with context-specific ones.
410: * As of now, this is only valid for `It' depending on its list
411: * context.
1.24 kristaps 412: */
413:
1.36 kristaps 414: switch (tok) {
415: case (MDOC_It):
1.24 kristaps 416: for (n = mdoc->last; n; n = n->parent)
1.36 kristaps 417: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
418: break;
419:
1.24 kristaps 420: assert(n);
1.39 kristaps 421: c = (int)(n->args ? n->args->argc : 0);
1.24 kristaps 422: assert(c > 0);
1.26 kristaps 423:
1.36 kristaps 424: /*
425: * Using `Bl -column' adds ARGS_TABSEP to the arguments
426: * and invalidates ARGS_DELIM. Using `Bl -diag' allows
427: * for quoted arguments.
428: */
429:
1.26 kristaps 430: /* LINTED */
1.24 kristaps 431: for (i = 0; i < c; i++) {
1.39 kristaps 432: switch (n->args->argv[i].arg) {
1.35 kristaps 433: case (MDOC_Column):
434: fl |= ARGS_TABSEP;
435: fl &= ~ARGS_DELIM;
436: i = c;
437: break;
438: case (MDOC_Diag):
439: fl |= ARGS_QUOTED;
440: i = c;
441: break;
442: default:
443: break;
444: }
1.24 kristaps 445: }
1.39 kristaps 446: break;
1.36 kristaps 447: default:
448: break;
1.24 kristaps 449: }
450:
1.36 kristaps 451: /* Continue parsing the arguments themselves... */
452:
1.26 kristaps 453: return(args(mdoc, line, pos, buf, fl, v));
454: }
455:
456:
457: static int
458: args(struct mdoc *mdoc, int line,
459: int *pos, char *buf, int fl, char **v)
460: {
1.31 kristaps 461: int i;
1.26 kristaps 462: char *p, *pp;
463:
464: assert(*pos > 0);
465:
466: if (0 == buf[*pos])
467: return(ARGS_EOLN);
468:
469: if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
470: if ( ! pwarn(mdoc, line, *pos, WQUOTPARM))
471: return(ARGS_ERROR);
472:
1.38 kristaps 473: if ( ! (fl & ARGS_ARGVLIKE) && '-' == buf[*pos])
1.26 kristaps 474: if ( ! pwarn(mdoc, line, *pos, WARGVPARM))
475: return(ARGS_ERROR);
476:
1.24 kristaps 477: /*
478: * If the first character is a delimiter and we're to look for
479: * delimited strings, then pass down the buffer seeing if it
480: * follows the pattern of [[::delim::][ ]+]+.
481: */
482:
1.2 kristaps 483: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
1.31 kristaps 484: for (i = *pos; buf[i]; ) {
485: if ( ! mdoc_iscdelim(buf[i]))
1.2 kristaps 486: break;
487: i++;
1.34 kristaps 488: /* There must be at least one space... */
1.37 kristaps 489: if (0 == buf[i] || ! isspace((u_char)buf[i]))
1.34 kristaps 490: break;
491: i++;
1.37 kristaps 492: while (buf[i] && isspace((u_char)buf[i]))
1.2 kristaps 493: i++;
494: }
495: if (0 == buf[i]) {
496: *v = &buf[*pos];
497: return(ARGS_PUNCT);
498: }
499: }
500:
1.24 kristaps 501: /* First parse non-quoted strings. */
1.1 kristaps 502:
1.17 kristaps 503: if ('\"' != buf[*pos] || ! (ARGS_QUOTED & fl)) {
1.1 kristaps 504: *v = &buf[*pos];
505:
1.24 kristaps 506: /*
507: * Thar be dragons here! If we're tab-separated, search
508: * ahead for either a tab or the `Ta' macro. If a tab
509: * is detected, it mustn't be escaped; if a `Ta' is
510: * detected, it must be space-buffered before and after.
511: * If either of these hold true, then prune out the
512: * extra spaces and call it an argument.
513: */
514:
515: if (ARGS_TABSEP & fl) {
516: /* Scan ahead to unescaped tab. */
1.12 kristaps 517:
1.24 kristaps 518: for (p = *v; ; p++) {
519: if (NULL == (p = strchr(p, '\t')))
520: break;
521: if (p == *v)
522: break;
523: if ('\\' != *(p - 1))
1.12 kristaps 524: break;
525: }
1.24 kristaps 526:
527: /* Scan ahead to unescaped `Ta'. */
528:
529: for (pp = *v; ; pp++) {
530: if (NULL == (pp = strstr(pp, "Ta")))
531: break;
532: if (pp > *v && ' ' != *(pp - 1))
533: continue;
534: if (' ' == *(pp + 2) || 0 == *(pp + 2))
535: break;
536: }
537:
538: /* Choose delimiter tab/Ta. */
539:
540: if (p && pp)
541: p = (p < pp ? p : pp);
542: else if ( ! p && pp)
543: p = pp;
544:
545: /* Strip delimiter's preceding whitespace. */
546:
547: if (p && p > *v) {
548: pp = p - 1;
549: while (pp > *v && ' ' == *pp)
550: pp--;
551: if (pp == *v && ' ' == *pp)
552: *pp = 0;
553: else if (' ' == *pp)
554: *(pp + 1) = 0;
555: }
556:
557: /* ...in- and proceding whitespace. */
558:
559: if (p && ('\t' != *p)) {
560: *p++ = 0;
561: *p++ = 0;
562: } else if (p)
563: *p++ = 0;
564:
565: if (p) {
566: while (' ' == *p)
567: p++;
568: if (0 != *p)
569: *(p - 1) = 0;
1.33 kristaps 570: *pos += (int)(p - *v);
1.24 kristaps 571: }
572:
1.25 kristaps 573: if (p && 0 == *p)
574: if ( ! pwarn(mdoc, line, *pos, WCOLEMPTY))
575: return(0);
576: if (p && 0 == *p && p > *v && ' ' == *(p - 1))
577: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
578: return(0);
579:
1.26 kristaps 580: if (p)
1.49 kristaps 581: return(ARGS_PHRASE);
1.26 kristaps 582:
1.24 kristaps 583: /* Configure the eoln case, too. */
584:
1.26 kristaps 585: p = strchr(*v, 0);
586: assert(p);
587:
588: if (p > *v && ' ' == *(p - 1))
589: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
590: return(0);
1.33 kristaps 591: *pos += (int)(p - *v);
1.24 kristaps 592:
1.49 kristaps 593: return(ARGS_PHRASE);
1.24 kristaps 594: }
1.46 kristaps 595:
1.24 kristaps 596: /* Do non-tabsep look-ahead here. */
597:
598: if ( ! (ARGS_TABSEP & fl))
1.31 kristaps 599: while (buf[*pos]) {
1.37 kristaps 600: if (isspace((u_char)buf[*pos]))
1.17 kristaps 601: if ('\\' != buf[*pos - 1])
602: break;
1.12 kristaps 603: (*pos)++;
1.17 kristaps 604: }
1.1 kristaps 605:
606: if (0 == buf[*pos])
1.2 kristaps 607: return(ARGS_WORD);
1.1 kristaps 608:
609: buf[(*pos)++] = 0;
1.12 kristaps 610:
1.1 kristaps 611: if (0 == buf[*pos])
1.2 kristaps 612: return(ARGS_WORD);
1.1 kristaps 613:
1.12 kristaps 614: if ( ! (ARGS_TABSEP & fl))
1.37 kristaps 615: while (buf[*pos] && isspace((u_char)buf[*pos]))
1.12 kristaps 616: (*pos)++;
1.1 kristaps 617:
618: if (buf[*pos])
1.2 kristaps 619: return(ARGS_WORD);
1.1 kristaps 620:
1.25 kristaps 621: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
1.2 kristaps 622: return(ARGS_ERROR);
1.1 kristaps 623:
1.2 kristaps 624: return(ARGS_WORD);
625: }
626:
627: /*
628: * If we're a quoted string (and quoted strings are allowed),
629: * then parse ahead to the next quote. If none's found, it's an
1.4 kristaps 630: * error. After, parse to the next word.
1.2 kristaps 631: */
1.1 kristaps 632:
633: *v = &buf[++(*pos)];
634:
635: while (buf[*pos] && '\"' != buf[*pos])
636: (*pos)++;
637:
638: if (0 == buf[*pos]) {
1.25 kristaps 639: (void)perr(mdoc, line, *pos, EQUOTTERM);
1.2 kristaps 640: return(ARGS_ERROR);
1.1 kristaps 641: }
642:
643: buf[(*pos)++] = 0;
644: if (0 == buf[*pos])
1.19 kristaps 645: return(ARGS_QWORD);
1.1 kristaps 646:
1.37 kristaps 647: while (buf[*pos] && isspace((u_char)buf[*pos]))
1.1 kristaps 648: (*pos)++;
649:
650: if (buf[*pos])
1.19 kristaps 651: return(ARGS_QWORD);
1.1 kristaps 652:
1.25 kristaps 653: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
1.2 kristaps 654: return(ARGS_ERROR);
655:
1.19 kristaps 656: return(ARGS_QWORD);
1.1 kristaps 657: }
658:
659:
1.2 kristaps 660: static int
1.30 kristaps 661: argv_a2arg(int tok, const char *argv)
1.1 kristaps 662: {
663:
1.36 kristaps 664: /*
665: * Parse an argument identifier from its text. XXX - this
666: * should really be table-driven to clarify the code.
667: *
668: * If you add an argument to the list, make sure that you
669: * register it here with its one or more macros!
670: */
671:
1.1 kristaps 672: switch (tok) {
1.6 kristaps 673: case (MDOC_An):
674: if (xstrcmp(argv, "split"))
675: return(MDOC_Split);
676: else if (xstrcmp(argv, "nosplit"))
677: return(MDOC_Nosplit);
678: break;
679:
1.2 kristaps 680: case (MDOC_Bd):
1.1 kristaps 681: if (xstrcmp(argv, "ragged"))
682: return(MDOC_Ragged);
683: else if (xstrcmp(argv, "unfilled"))
684: return(MDOC_Unfilled);
1.13 kristaps 685: else if (xstrcmp(argv, "filled"))
686: return(MDOC_Filled);
1.1 kristaps 687: else if (xstrcmp(argv, "literal"))
688: return(MDOC_Literal);
689: else if (xstrcmp(argv, "file"))
690: return(MDOC_File);
691: else if (xstrcmp(argv, "offset"))
692: return(MDOC_Offset);
1.49 kristaps 693: else if (xstrcmp(argv, "compact"))
694: return(MDOC_Compact);
1.2 kristaps 695: break;
696:
1.8 kristaps 697: case (MDOC_Bf):
698: if (xstrcmp(argv, "emphasis"))
699: return(MDOC_Emphasis);
700: else if (xstrcmp(argv, "literal"))
701: return(MDOC_Literal);
702: else if (xstrcmp(argv, "symbolic"))
703: return(MDOC_Symbolic);
704: break;
705:
1.7 kristaps 706: case (MDOC_Bk):
707: if (xstrcmp(argv, "words"))
708: return(MDOC_Words);
709: break;
710:
1.2 kristaps 711: case (MDOC_Bl):
712: if (xstrcmp(argv, "bullet"))
1.1 kristaps 713: return(MDOC_Bullet);
714: else if (xstrcmp(argv, "dash"))
715: return(MDOC_Dash);
716: else if (xstrcmp(argv, "hyphen"))
717: return(MDOC_Hyphen);
718: else if (xstrcmp(argv, "item"))
719: return(MDOC_Item);
720: else if (xstrcmp(argv, "enum"))
721: return(MDOC_Enum);
722: else if (xstrcmp(argv, "tag"))
723: return(MDOC_Tag);
724: else if (xstrcmp(argv, "diag"))
725: return(MDOC_Diag);
726: else if (xstrcmp(argv, "hang"))
727: return(MDOC_Hang);
728: else if (xstrcmp(argv, "ohang"))
729: return(MDOC_Ohang);
730: else if (xstrcmp(argv, "inset"))
731: return(MDOC_Inset);
732: else if (xstrcmp(argv, "column"))
733: return(MDOC_Column);
734: else if (xstrcmp(argv, "width"))
735: return(MDOC_Width);
1.2 kristaps 736: else if (xstrcmp(argv, "offset"))
737: return(MDOC_Offset);
1.1 kristaps 738: else if (xstrcmp(argv, "compact"))
739: return(MDOC_Compact);
1.50 ! kristaps 740: else if (xstrcmp(argv, "nested"))
! 741: return(MDOC_Nested);
1.2 kristaps 742: break;
1.3 kristaps 743:
744: case (MDOC_Rv):
745: /* FALLTHROUGH */
746: case (MDOC_Ex):
747: if (xstrcmp(argv, "std"))
748: return(MDOC_Std);
749: break;
1.1 kristaps 750: default:
1.8 kristaps 751: break;
1.1 kristaps 752: }
753:
754: return(MDOC_ARG_MAX);
755: }
756:
757:
1.2 kristaps 758: static int
1.26 kristaps 759: argv_multi(struct mdoc *mdoc, int line,
1.39 kristaps 760: struct mdoc_argv *v, int *pos, char *buf)
1.12 kristaps 761: {
762: int c, ppos;
763: char *p;
764:
765: ppos = *pos;
766:
1.39 kristaps 767: for (v->sz = 0; ; v->sz++) {
1.12 kristaps 768: if ('-' == buf[*pos])
769: break;
1.26 kristaps 770: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
1.39 kristaps 771: if (ARGS_ERROR == c)
1.12 kristaps 772: return(0);
1.39 kristaps 773: else if (ARGS_EOLN == c)
1.12 kristaps 774: break;
1.39 kristaps 775:
776: if (0 == v->sz % 5)
777: v->value = xrealloc(v->value,
778: (v->sz + 5) * sizeof(char *));
779:
1.40 kristaps 780: v->value[(int)v->sz] = xstrdup(p);
1.12 kristaps 781: }
782:
1.39 kristaps 783: if (v->sz)
1.12 kristaps 784: return(1);
785:
1.39 kristaps 786: return(perr(mdoc, line, ppos, EARGVAL));
1.12 kristaps 787: }
788:
789:
790: static int
1.36 kristaps 791: argv_opt_single(struct mdoc *mdoc, int line,
1.39 kristaps 792: struct mdoc_argv *v, int *pos, char *buf)
1.36 kristaps 793: {
1.39 kristaps 794: int c;
1.36 kristaps 795: char *p;
796:
797: if ('-' == buf[*pos])
798: return(1);
799:
800: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
801: if (ARGS_ERROR == c)
802: return(0);
803: if (ARGS_EOLN == c)
804: return(1);
805:
806: v->sz = 1;
807: v->value = xcalloc(1, sizeof(char *));
1.40 kristaps 808: v->value[0] = xstrdup(p);
1.36 kristaps 809: return(1);
810: }
811:
812:
813: /*
814: * Parse a single, mandatory value from the stream.
815: */
816: static int
1.26 kristaps 817: argv_single(struct mdoc *mdoc, int line,
1.39 kristaps 818: struct mdoc_argv *v, int *pos, char *buf)
1.1 kristaps 819: {
1.12 kristaps 820: int c, ppos;
1.1 kristaps 821: char *p;
822:
823: ppos = *pos;
824:
1.26 kristaps 825: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
1.12 kristaps 826: if (ARGS_ERROR == c)
827: return(0);
828: if (ARGS_EOLN == c)
1.36 kristaps 829: return(perr(mdoc, line, ppos, EARGVAL));
1.12 kristaps 830:
831: v->sz = 1;
832: v->value = xcalloc(1, sizeof(char *));
1.40 kristaps 833: v->value[0] = xstrdup(p);
1.12 kristaps 834: return(1);
835: }
836:
837:
1.36 kristaps 838: /*
839: * Determine rules for parsing arguments. Arguments can either accept
840: * no parameters, an optional single parameter, one parameter, or
841: * multiple parameters.
842: */
1.12 kristaps 843: static int
1.37 kristaps 844: argv(struct mdoc *mdoc, int tok, int line,
1.39 kristaps 845: struct mdoc_argv *v, int *pos, char *buf)
1.12 kristaps 846: {
847:
848: v->sz = 0;
849: v->value = NULL;
850:
1.50 ! kristaps 851: switch (mdoc_argvflags[v->arg]) {
1.36 kristaps 852: case (ARGV_SINGLE):
1.26 kristaps 853: return(argv_single(mdoc, line, v, pos, buf));
1.36 kristaps 854: case (ARGV_MULTI):
1.26 kristaps 855: return(argv_multi(mdoc, line, v, pos, buf));
1.36 kristaps 856: case (ARGV_OPT_SINGLE):
857: return(argv_opt_single(mdoc, line, v, pos, buf));
1.1 kristaps 858: default:
1.36 kristaps 859: /* ARGV_NONE */
1.6 kristaps 860: break;
1.1 kristaps 861: }
862:
863: return(1);
864: }
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