Annotation of mandoc/argv.c, Revision 1.45
1.45 ! kristaps 1: /* $Id: argv.c,v 1.44 2009/03/09 13:17:49 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 */
1.37 kristaps 97: ARGV_SINGLE, /* MDOC_Std */
1.36 kristaps 98: ARGV_NONE, /* MDOC_Filled */
99: ARGV_NONE, /* MDOC_Words */
100: ARGV_NONE, /* MDOC_Emphasis */
101: ARGV_NONE /* MDOC_Symbolic */
102: };
103:
1.22 kristaps 104: static int mdoc_argflags[MDOC_MAX] = {
105: 0, /* \" */
106: 0, /* Dd */
107: 0, /* Dt */
108: 0, /* Os */
109: 0, /* Sh */
110: 0, /* Ss */
111: ARGS_DELIM, /* Pp */
112: ARGS_DELIM, /* D1 */
113: ARGS_DELIM, /* Dl */
114: 0, /* Bd */
115: 0, /* Ed */
116: 0, /* Bl */
117: 0, /* El */
1.32 kristaps 118: 0, /* It */
1.22 kristaps 119: ARGS_DELIM, /* Ad */
120: ARGS_DELIM, /* An */
121: ARGS_DELIM, /* Ar */
122: ARGS_QUOTED, /* Cd */
123: ARGS_DELIM, /* Cm */
124: ARGS_DELIM, /* Dv */
125: ARGS_DELIM, /* Er */
126: ARGS_DELIM, /* Ev */
127: 0, /* Ex */
128: ARGS_DELIM | ARGS_QUOTED, /* Fa */
129: 0, /* Fd */
130: ARGS_DELIM, /* Fl */
131: ARGS_DELIM | ARGS_QUOTED, /* Fn */
132: ARGS_DELIM | ARGS_QUOTED, /* Ft */
133: ARGS_DELIM, /* Ic */
134: 0, /* In */
135: ARGS_DELIM, /* Li */
136: 0, /* Nd */
137: ARGS_DELIM, /* Nm */
138: ARGS_DELIM, /* Op */
139: 0, /* Ot */
140: ARGS_DELIM, /* Pa */
141: 0, /* Rv */
1.38 kristaps 142: ARGS_DELIM | ARGS_ARGVLIKE, /* St */
1.22 kristaps 143: ARGS_DELIM, /* Va */
144: ARGS_DELIM, /* Vt */
145: ARGS_DELIM, /* Xr */
146: ARGS_QUOTED, /* %A */
147: ARGS_QUOTED, /* %B */
148: ARGS_QUOTED, /* %D */
149: ARGS_QUOTED, /* %I */
150: ARGS_QUOTED, /* %J */
151: ARGS_QUOTED, /* %N */
152: ARGS_QUOTED, /* %O */
153: ARGS_QUOTED, /* %P */
154: ARGS_QUOTED, /* %R */
155: ARGS_QUOTED, /* %T */
156: ARGS_QUOTED, /* %V */
157: ARGS_DELIM, /* Ac */
158: 0, /* Ao */
159: ARGS_DELIM, /* Aq */
160: ARGS_DELIM, /* At */
161: ARGS_DELIM, /* Bc */
162: 0, /* Bf */
163: 0, /* Bo */
164: ARGS_DELIM, /* Bq */
165: ARGS_DELIM, /* Bsx */
166: ARGS_DELIM, /* Bx */
167: 0, /* Db */
168: ARGS_DELIM, /* Dc */
169: 0, /* Do */
170: ARGS_DELIM, /* Dq */
171: ARGS_DELIM, /* Ec */
172: 0, /* Ef */
173: ARGS_DELIM, /* Em */
174: 0, /* Eo */
175: ARGS_DELIM, /* Fx */
176: ARGS_DELIM, /* Ms */
177: ARGS_DELIM, /* No */
178: ARGS_DELIM, /* Ns */
179: ARGS_DELIM, /* Nx */
180: ARGS_DELIM, /* Ox */
181: ARGS_DELIM, /* Pc */
182: ARGS_DELIM, /* Pf */
183: 0, /* Po */
184: ARGS_DELIM, /* Pq */
185: ARGS_DELIM, /* Qc */
186: ARGS_DELIM, /* Ql */
187: 0, /* Qo */
188: ARGS_DELIM, /* Qq */
189: 0, /* Re */
190: 0, /* Rs */
191: ARGS_DELIM, /* Sc */
192: 0, /* So */
193: ARGS_DELIM, /* Sq */
194: 0, /* Sm */
195: ARGS_DELIM, /* Sx */
196: ARGS_DELIM, /* Sy */
197: ARGS_DELIM, /* Tn */
198: ARGS_DELIM, /* Ux */
199: ARGS_DELIM, /* Xc */
200: 0, /* Xo */
201: 0, /* Fo */
202: 0, /* Fc */
203: 0, /* Oo */
204: ARGS_DELIM, /* Oc */
205: 0, /* Bk */
206: 0, /* Ek */
207: 0, /* Bt */
208: 0, /* Hf */
209: 0, /* Fr */
210: 0, /* Ud */
1.38 kristaps 211: 0, /* Lb */
1.42 kristaps 212: 0, /* Ap */
1.45 ! kristaps 213: ARGS_DELIM, /* Lp */
! 214: ARGS_DELIM | ARGS_QUOTED, /* Lk */
! 215: ARGS_DELIM | ARGS_QUOTED, /* Mt */
1.22 kristaps 216: };
217:
1.1 kristaps 218:
1.39 kristaps 219: /*
220: * Parse an argument from line text. This comes in the form of -key
221: * [value0...], which may either have a single mandatory value, at least
222: * one mandatory value, an optional single value, or no value.
223: */
224: int
225: mdoc_argv(struct mdoc *mdoc, int line, int tok,
226: struct mdoc_arg **v, int *pos, char *buf)
227: {
228: int i;
229: char *p;
230: struct mdoc_argv tmp;
231: struct mdoc_arg *arg;
232:
233: if (0 == buf[*pos])
234: return(ARGV_EOLN);
235:
236: assert( ! isspace((u_char)buf[*pos]));
237:
238: if ('-' != buf[*pos])
239: return(ARGV_WORD);
240:
241: i = *pos;
242: p = &buf[++(*pos)];
243:
244: assert(*pos > 0);
245:
246: /* LINTED */
247: while (buf[*pos]) {
248: if (isspace((u_char)buf[*pos]))
249: if ('\\' != buf[*pos - 1])
250: break;
251: (*pos)++;
252: }
253:
254: if (buf[*pos])
255: buf[(*pos)++] = 0;
256:
257: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
258: tmp.line = line;
259: tmp.pos = *pos;
260:
261: /*
262: * We now parse out the per-macro arguments. XXX - this can be
263: * made much cleaner using per-argument tables. See argv_a2arg
264: * for details.
265: */
266:
267: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
268: if ( ! pwarn(mdoc, line, i, WARGVPARM))
269: return(ARGV_ERROR);
270: return(ARGV_WORD);
271: }
272:
273: while (buf[*pos] && isspace((u_char)buf[*pos]))
274: (*pos)++;
275:
276: /* FIXME: whitespace if no value. */
277:
278: if ( ! argv(mdoc, tok, line, &tmp, pos, buf))
279: return(ARGV_ERROR);
280:
281: if (NULL == (arg = *v)) {
1.40 kristaps 282: *v = xcalloc(1, sizeof(struct mdoc_arg));
1.39 kristaps 283: arg = *v;
1.40 kristaps 284: }
1.39 kristaps 285:
286: arg->argc++;
287: arg->argv = xrealloc(arg->argv, arg->argc *
1.40 kristaps 288: sizeof(struct mdoc_argv));
1.39 kristaps 289:
290: (void)memcpy(&arg->argv[(int)arg->argc - 1],
291: &tmp, sizeof(struct mdoc_argv));
292:
293: return(ARGV_ARG);
294: }
295:
296:
297: void
298: mdoc_argv_free(struct mdoc_arg *p)
299: {
300: int i, j;
301:
1.41 kristaps 302: if (NULL == p)
303: return;
304:
1.40 kristaps 305: if (p->refcnt) {
306: --(p->refcnt);
307: if (p->refcnt)
308: return;
309: }
310:
311: assert(p->argc);
1.39 kristaps 312:
313: /* LINTED */
314: for (i = 0; i < (int)p->argc; i++) {
315: if (0 == p->argv[i].sz)
316: continue;
317: /* LINTED */
318: for (j = 0; j < (int)p->argv[i].sz; j++)
319: free(p->argv[i].value[j]);
1.40 kristaps 320:
1.39 kristaps 321: free(p->argv[i].value);
322: }
323:
1.40 kristaps 324: free(p->argv);
1.39 kristaps 325: free(p);
326: }
327:
328:
329:
1.24 kristaps 330: static int
1.39 kristaps 331: perr(struct mdoc *mdoc, int line, int pos, enum merr code)
1.25 kristaps 332: {
1.39 kristaps 333: char *p;
334:
335: p = NULL;
1.25 kristaps 336:
337: switch (code) {
338: case (EQUOTTERM):
1.39 kristaps 339: p = "unterminated quoted parameter";
1.25 kristaps 340: break;
341: case (EARGVAL):
1.39 kristaps 342: p = "argument requires a value";
1.25 kristaps 343: break;
344: }
1.39 kristaps 345:
346: assert(p);
347: return(mdoc_perr(mdoc, line, pos, p));
1.25 kristaps 348: }
349:
350:
351: static int
1.39 kristaps 352: pwarn(struct mdoc *mdoc, int line, int pos, enum mwarn code)
1.24 kristaps 353: {
1.39 kristaps 354: char *p;
1.24 kristaps 355: int c;
356:
1.39 kristaps 357: p = NULL;
358: c = WARN_SYNTAX;
359:
1.24 kristaps 360: switch (code) {
361: case (WQUOTPARM):
1.39 kristaps 362: p = "unexpected quoted parameter";
1.24 kristaps 363: break;
364: case (WARGVPARM):
1.39 kristaps 365: p = "argument-like parameter";
1.24 kristaps 366: break;
1.25 kristaps 367: case (WCOLEMPTY):
1.39 kristaps 368: p = "last list column is empty";
369: c = WARN_COMPAT;
1.25 kristaps 370: break;
371: case (WTAILWS):
1.39 kristaps 372: p = "trailing whitespace";
373: c = WARN_COMPAT;
1.25 kristaps 374: break;
1.24 kristaps 375: }
1.39 kristaps 376:
377: assert(p);
378: return(mdoc_pwarn(mdoc, line, pos, c, p));
1.24 kristaps 379: }
380:
381:
1.2 kristaps 382: int
1.22 kristaps 383: mdoc_args(struct mdoc *mdoc, int line,
384: int *pos, char *buf, int tok, char **v)
1.1 kristaps 385: {
1.26 kristaps 386: int fl, c, i;
1.22 kristaps 387: struct mdoc_node *n;
388:
1.24 kristaps 389: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
390:
391: /*
1.36 kristaps 392: * Override per-macro argument flags with context-specific ones.
393: * As of now, this is only valid for `It' depending on its list
394: * context.
1.24 kristaps 395: */
396:
1.36 kristaps 397: switch (tok) {
398: case (MDOC_It):
1.24 kristaps 399: for (n = mdoc->last; n; n = n->parent)
1.36 kristaps 400: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
401: break;
402:
1.24 kristaps 403: assert(n);
1.39 kristaps 404: c = (int)(n->args ? n->args->argc : 0);
1.24 kristaps 405: assert(c > 0);
1.26 kristaps 406:
1.36 kristaps 407: /*
408: * Using `Bl -column' adds ARGS_TABSEP to the arguments
409: * and invalidates ARGS_DELIM. Using `Bl -diag' allows
410: * for quoted arguments.
411: */
412:
1.26 kristaps 413: /* LINTED */
1.24 kristaps 414: for (i = 0; i < c; i++) {
1.39 kristaps 415: switch (n->args->argv[i].arg) {
1.35 kristaps 416: case (MDOC_Column):
417: fl |= ARGS_TABSEP;
418: fl &= ~ARGS_DELIM;
419: i = c;
420: break;
421: case (MDOC_Diag):
422: fl |= ARGS_QUOTED;
423: i = c;
424: break;
425: default:
426: break;
427: }
1.24 kristaps 428: }
1.39 kristaps 429: break;
1.36 kristaps 430: default:
431: break;
1.24 kristaps 432: }
433:
1.36 kristaps 434: /* Continue parsing the arguments themselves... */
435:
1.26 kristaps 436: return(args(mdoc, line, pos, buf, fl, v));
437: }
438:
439:
440: static int
441: args(struct mdoc *mdoc, int line,
442: int *pos, char *buf, int fl, char **v)
443: {
1.31 kristaps 444: int i;
1.26 kristaps 445: char *p, *pp;
446:
447: assert(*pos > 0);
448:
449: if (0 == buf[*pos])
450: return(ARGS_EOLN);
451:
452: if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
453: if ( ! pwarn(mdoc, line, *pos, WQUOTPARM))
454: return(ARGS_ERROR);
455:
1.38 kristaps 456: if ( ! (fl & ARGS_ARGVLIKE) && '-' == buf[*pos])
1.26 kristaps 457: if ( ! pwarn(mdoc, line, *pos, WARGVPARM))
458: return(ARGS_ERROR);
459:
1.24 kristaps 460: /*
461: * If the first character is a delimiter and we're to look for
462: * delimited strings, then pass down the buffer seeing if it
463: * follows the pattern of [[::delim::][ ]+]+.
464: */
465:
1.2 kristaps 466: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
1.31 kristaps 467: for (i = *pos; buf[i]; ) {
468: if ( ! mdoc_iscdelim(buf[i]))
1.2 kristaps 469: break;
470: i++;
1.34 kristaps 471: /* There must be at least one space... */
1.37 kristaps 472: if (0 == buf[i] || ! isspace((u_char)buf[i]))
1.34 kristaps 473: break;
474: i++;
1.37 kristaps 475: while (buf[i] && isspace((u_char)buf[i]))
1.2 kristaps 476: i++;
477: }
478: if (0 == buf[i]) {
479: *v = &buf[*pos];
480: return(ARGS_PUNCT);
481: }
482: }
483:
1.24 kristaps 484: /* First parse non-quoted strings. */
1.1 kristaps 485:
1.17 kristaps 486: if ('\"' != buf[*pos] || ! (ARGS_QUOTED & fl)) {
1.1 kristaps 487: *v = &buf[*pos];
488:
1.24 kristaps 489: /*
490: * Thar be dragons here! If we're tab-separated, search
491: * ahead for either a tab or the `Ta' macro. If a tab
492: * is detected, it mustn't be escaped; if a `Ta' is
493: * detected, it must be space-buffered before and after.
494: * If either of these hold true, then prune out the
495: * extra spaces and call it an argument.
496: */
497:
498: if (ARGS_TABSEP & fl) {
499: /* Scan ahead to unescaped tab. */
1.12 kristaps 500:
1.24 kristaps 501: for (p = *v; ; p++) {
502: if (NULL == (p = strchr(p, '\t')))
503: break;
504: if (p == *v)
505: break;
506: if ('\\' != *(p - 1))
1.12 kristaps 507: break;
508: }
1.24 kristaps 509:
510: /* Scan ahead to unescaped `Ta'. */
511:
512: for (pp = *v; ; pp++) {
513: if (NULL == (pp = strstr(pp, "Ta")))
514: break;
515: if (pp > *v && ' ' != *(pp - 1))
516: continue;
517: if (' ' == *(pp + 2) || 0 == *(pp + 2))
518: break;
519: }
520:
521: /* Choose delimiter tab/Ta. */
522:
523: if (p && pp)
524: p = (p < pp ? p : pp);
525: else if ( ! p && pp)
526: p = pp;
527:
528: /* Strip delimiter's preceding whitespace. */
529:
530: if (p && p > *v) {
531: pp = p - 1;
532: while (pp > *v && ' ' == *pp)
533: pp--;
534: if (pp == *v && ' ' == *pp)
535: *pp = 0;
536: else if (' ' == *pp)
537: *(pp + 1) = 0;
538: }
539:
540: /* ...in- and proceding whitespace. */
541:
542: if (p && ('\t' != *p)) {
543: *p++ = 0;
544: *p++ = 0;
545: } else if (p)
546: *p++ = 0;
547:
548: if (p) {
549: while (' ' == *p)
550: p++;
551: if (0 != *p)
552: *(p - 1) = 0;
1.33 kristaps 553: *pos += (int)(p - *v);
1.24 kristaps 554: }
555:
1.25 kristaps 556: if (p && 0 == *p)
557: if ( ! pwarn(mdoc, line, *pos, WCOLEMPTY))
558: return(0);
559: if (p && 0 == *p && p > *v && ' ' == *(p - 1))
560: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
561: return(0);
562:
1.26 kristaps 563: if (p)
564: return(ARGS_WORD);
565:
1.24 kristaps 566: /* Configure the eoln case, too. */
567:
1.26 kristaps 568: p = strchr(*v, 0);
569: assert(p);
570:
571: if (p > *v && ' ' == *(p - 1))
572: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
573: return(0);
1.33 kristaps 574: *pos += (int)(p - *v);
1.24 kristaps 575:
576: return(ARGS_WORD);
577: }
578:
579: /* Do non-tabsep look-ahead here. */
580:
581: if ( ! (ARGS_TABSEP & fl))
1.31 kristaps 582: while (buf[*pos]) {
1.37 kristaps 583: if (isspace((u_char)buf[*pos]))
1.17 kristaps 584: if ('\\' != buf[*pos - 1])
585: break;
1.12 kristaps 586: (*pos)++;
1.17 kristaps 587: }
1.1 kristaps 588:
589: if (0 == buf[*pos])
1.2 kristaps 590: return(ARGS_WORD);
1.1 kristaps 591:
592: buf[(*pos)++] = 0;
1.12 kristaps 593:
1.1 kristaps 594: if (0 == buf[*pos])
1.2 kristaps 595: return(ARGS_WORD);
1.1 kristaps 596:
1.12 kristaps 597: if ( ! (ARGS_TABSEP & fl))
1.37 kristaps 598: while (buf[*pos] && isspace((u_char)buf[*pos]))
1.12 kristaps 599: (*pos)++;
1.1 kristaps 600:
601: if (buf[*pos])
1.2 kristaps 602: return(ARGS_WORD);
1.1 kristaps 603:
1.25 kristaps 604: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
1.2 kristaps 605: return(ARGS_ERROR);
1.1 kristaps 606:
1.2 kristaps 607: return(ARGS_WORD);
608: }
609:
610: /*
611: * If we're a quoted string (and quoted strings are allowed),
612: * then parse ahead to the next quote. If none's found, it's an
1.4 kristaps 613: * error. After, parse to the next word.
1.2 kristaps 614: */
1.1 kristaps 615:
616: *v = &buf[++(*pos)];
617:
618: while (buf[*pos] && '\"' != buf[*pos])
619: (*pos)++;
620:
621: if (0 == buf[*pos]) {
1.25 kristaps 622: (void)perr(mdoc, line, *pos, EQUOTTERM);
1.2 kristaps 623: return(ARGS_ERROR);
1.1 kristaps 624: }
625:
626: buf[(*pos)++] = 0;
627: if (0 == buf[*pos])
1.19 kristaps 628: return(ARGS_QWORD);
1.1 kristaps 629:
1.37 kristaps 630: while (buf[*pos] && isspace((u_char)buf[*pos]))
1.1 kristaps 631: (*pos)++;
632:
633: if (buf[*pos])
1.19 kristaps 634: return(ARGS_QWORD);
1.1 kristaps 635:
1.25 kristaps 636: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
1.2 kristaps 637: return(ARGS_ERROR);
638:
1.19 kristaps 639: return(ARGS_QWORD);
1.1 kristaps 640: }
641:
642:
1.2 kristaps 643: static int
1.30 kristaps 644: argv_a2arg(int tok, const char *argv)
1.1 kristaps 645: {
646:
1.36 kristaps 647: /*
648: * Parse an argument identifier from its text. XXX - this
649: * should really be table-driven to clarify the code.
650: *
651: * If you add an argument to the list, make sure that you
652: * register it here with its one or more macros!
653: */
654:
1.1 kristaps 655: switch (tok) {
1.6 kristaps 656: case (MDOC_An):
657: if (xstrcmp(argv, "split"))
658: return(MDOC_Split);
659: else if (xstrcmp(argv, "nosplit"))
660: return(MDOC_Nosplit);
661: break;
662:
1.2 kristaps 663: case (MDOC_Bd):
1.1 kristaps 664: if (xstrcmp(argv, "ragged"))
665: return(MDOC_Ragged);
666: else if (xstrcmp(argv, "unfilled"))
667: return(MDOC_Unfilled);
1.13 kristaps 668: else if (xstrcmp(argv, "filled"))
669: return(MDOC_Filled);
1.1 kristaps 670: else if (xstrcmp(argv, "literal"))
671: return(MDOC_Literal);
672: else if (xstrcmp(argv, "file"))
673: return(MDOC_File);
674: else if (xstrcmp(argv, "offset"))
675: return(MDOC_Offset);
1.2 kristaps 676: break;
677:
1.8 kristaps 678: case (MDOC_Bf):
679: if (xstrcmp(argv, "emphasis"))
680: return(MDOC_Emphasis);
681: else if (xstrcmp(argv, "literal"))
682: return(MDOC_Literal);
683: else if (xstrcmp(argv, "symbolic"))
684: return(MDOC_Symbolic);
685: break;
686:
1.7 kristaps 687: case (MDOC_Bk):
688: if (xstrcmp(argv, "words"))
689: return(MDOC_Words);
690: break;
691:
1.2 kristaps 692: case (MDOC_Bl):
693: if (xstrcmp(argv, "bullet"))
1.1 kristaps 694: return(MDOC_Bullet);
695: else if (xstrcmp(argv, "dash"))
696: return(MDOC_Dash);
697: else if (xstrcmp(argv, "hyphen"))
698: return(MDOC_Hyphen);
699: else if (xstrcmp(argv, "item"))
700: return(MDOC_Item);
701: else if (xstrcmp(argv, "enum"))
702: return(MDOC_Enum);
703: else if (xstrcmp(argv, "tag"))
704: return(MDOC_Tag);
705: else if (xstrcmp(argv, "diag"))
706: return(MDOC_Diag);
707: else if (xstrcmp(argv, "hang"))
708: return(MDOC_Hang);
709: else if (xstrcmp(argv, "ohang"))
710: return(MDOC_Ohang);
711: else if (xstrcmp(argv, "inset"))
712: return(MDOC_Inset);
713: else if (xstrcmp(argv, "column"))
714: return(MDOC_Column);
715: else if (xstrcmp(argv, "width"))
716: return(MDOC_Width);
1.2 kristaps 717: else if (xstrcmp(argv, "offset"))
718: return(MDOC_Offset);
1.1 kristaps 719: else if (xstrcmp(argv, "compact"))
720: return(MDOC_Compact);
1.2 kristaps 721: break;
1.3 kristaps 722:
723: case (MDOC_Rv):
724: /* FALLTHROUGH */
725: case (MDOC_Ex):
726: if (xstrcmp(argv, "std"))
727: return(MDOC_Std);
728: break;
1.1 kristaps 729: default:
1.8 kristaps 730: break;
1.1 kristaps 731: }
732:
733: return(MDOC_ARG_MAX);
734: }
735:
736:
1.2 kristaps 737: static int
1.26 kristaps 738: argv_multi(struct mdoc *mdoc, int line,
1.39 kristaps 739: struct mdoc_argv *v, int *pos, char *buf)
1.12 kristaps 740: {
741: int c, ppos;
742: char *p;
743:
744: ppos = *pos;
745:
1.39 kristaps 746: for (v->sz = 0; ; v->sz++) {
1.12 kristaps 747: if ('-' == buf[*pos])
748: break;
1.26 kristaps 749: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
1.39 kristaps 750: if (ARGS_ERROR == c)
1.12 kristaps 751: return(0);
1.39 kristaps 752: else if (ARGS_EOLN == c)
1.12 kristaps 753: break;
1.39 kristaps 754:
755: if (0 == v->sz % 5)
756: v->value = xrealloc(v->value,
757: (v->sz + 5) * sizeof(char *));
758:
1.40 kristaps 759: v->value[(int)v->sz] = xstrdup(p);
1.12 kristaps 760: }
761:
1.39 kristaps 762: if (v->sz)
1.12 kristaps 763: return(1);
764:
1.39 kristaps 765: return(perr(mdoc, line, ppos, EARGVAL));
1.12 kristaps 766: }
767:
768:
769: static int
1.36 kristaps 770: argv_opt_single(struct mdoc *mdoc, int line,
1.39 kristaps 771: struct mdoc_argv *v, int *pos, char *buf)
1.36 kristaps 772: {
1.39 kristaps 773: int c;
1.36 kristaps 774: char *p;
775:
776: if ('-' == buf[*pos])
777: return(1);
778:
779: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
780: if (ARGS_ERROR == c)
781: return(0);
782: if (ARGS_EOLN == c)
783: return(1);
784:
785: v->sz = 1;
786: v->value = xcalloc(1, sizeof(char *));
1.40 kristaps 787: v->value[0] = xstrdup(p);
1.36 kristaps 788: return(1);
789: }
790:
791:
792: /*
793: * Parse a single, mandatory value from the stream.
794: */
795: static int
1.26 kristaps 796: argv_single(struct mdoc *mdoc, int line,
1.39 kristaps 797: struct mdoc_argv *v, int *pos, char *buf)
1.1 kristaps 798: {
1.12 kristaps 799: int c, ppos;
1.1 kristaps 800: char *p;
801:
802: ppos = *pos;
803:
1.26 kristaps 804: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
1.12 kristaps 805: if (ARGS_ERROR == c)
806: return(0);
807: if (ARGS_EOLN == c)
1.36 kristaps 808: return(perr(mdoc, line, ppos, EARGVAL));
1.12 kristaps 809:
810: v->sz = 1;
811: v->value = xcalloc(1, sizeof(char *));
1.40 kristaps 812: v->value[0] = xstrdup(p);
1.12 kristaps 813: return(1);
814: }
815:
816:
1.36 kristaps 817: /*
818: * Determine rules for parsing arguments. Arguments can either accept
819: * no parameters, an optional single parameter, one parameter, or
820: * multiple parameters.
821: */
1.12 kristaps 822: static int
1.37 kristaps 823: argv(struct mdoc *mdoc, int tok, int line,
1.39 kristaps 824: struct mdoc_argv *v, int *pos, char *buf)
1.12 kristaps 825: {
1.37 kristaps 826: int fl;
1.12 kristaps 827:
828: v->sz = 0;
829: v->value = NULL;
1.37 kristaps 830: fl = mdoc_argvflags[v->arg];
1.12 kristaps 831:
1.37 kristaps 832: /*
833: * Override the default per-argument value.
834: */
835:
836: switch (tok) {
837: case (MDOC_Ex):
838: fl = ARGV_OPT_SINGLE;
839: break;
840: default:
841: break;
842: }
843:
844: switch (fl) {
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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