Annotation of mandoc/argv.c, Revision 1.44
1.44 ! kristaps 1: /* $Id: argv.c,v 1.43 2009/03/08 20:57:35 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 */
1.37 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 */
1.43 kristaps 213: 0, /* Lp */
1.22 kristaps 214: };
215:
1.1 kristaps 216:
1.39 kristaps 217: /*
218: * Parse an argument from line text. This comes in the form of -key
219: * [value0...], which may either have a single mandatory value, at least
220: * one mandatory value, an optional single value, or no value.
221: */
222: int
223: mdoc_argv(struct mdoc *mdoc, int line, int tok,
224: struct mdoc_arg **v, int *pos, char *buf)
225: {
226: int i;
227: char *p;
228: struct mdoc_argv tmp;
229: struct mdoc_arg *arg;
230:
231: if (0 == buf[*pos])
232: return(ARGV_EOLN);
233:
234: assert( ! isspace((u_char)buf[*pos]));
235:
236: if ('-' != buf[*pos])
237: return(ARGV_WORD);
238:
239: i = *pos;
240: p = &buf[++(*pos)];
241:
242: assert(*pos > 0);
243:
244: /* LINTED */
245: while (buf[*pos]) {
246: if (isspace((u_char)buf[*pos]))
247: if ('\\' != buf[*pos - 1])
248: break;
249: (*pos)++;
250: }
251:
252: if (buf[*pos])
253: buf[(*pos)++] = 0;
254:
255: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
256: tmp.line = line;
257: tmp.pos = *pos;
258:
259: /*
260: * We now parse out the per-macro arguments. XXX - this can be
261: * made much cleaner using per-argument tables. See argv_a2arg
262: * for details.
263: */
264:
265: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
266: if ( ! pwarn(mdoc, line, i, WARGVPARM))
267: return(ARGV_ERROR);
268: return(ARGV_WORD);
269: }
270:
271: while (buf[*pos] && isspace((u_char)buf[*pos]))
272: (*pos)++;
273:
274: /* FIXME: whitespace if no value. */
275:
276: if ( ! argv(mdoc, tok, line, &tmp, pos, buf))
277: return(ARGV_ERROR);
278:
279: if (NULL == (arg = *v)) {
1.40 kristaps 280: *v = xcalloc(1, sizeof(struct mdoc_arg));
1.39 kristaps 281: arg = *v;
1.40 kristaps 282: }
1.39 kristaps 283:
284: arg->argc++;
285: arg->argv = xrealloc(arg->argv, arg->argc *
1.40 kristaps 286: sizeof(struct mdoc_argv));
1.39 kristaps 287:
288: (void)memcpy(&arg->argv[(int)arg->argc - 1],
289: &tmp, sizeof(struct mdoc_argv));
290:
291: return(ARGV_ARG);
292: }
293:
294:
295: void
296: mdoc_argv_free(struct mdoc_arg *p)
297: {
298: int i, j;
299:
1.41 kristaps 300: if (NULL == p)
301: return;
302:
1.40 kristaps 303: if (p->refcnt) {
304: --(p->refcnt);
305: if (p->refcnt)
306: return;
307: }
308:
309: assert(p->argc);
1.39 kristaps 310:
311: /* LINTED */
312: for (i = 0; i < (int)p->argc; i++) {
313: if (0 == p->argv[i].sz)
314: continue;
315: /* LINTED */
316: for (j = 0; j < (int)p->argv[i].sz; j++)
317: free(p->argv[i].value[j]);
1.40 kristaps 318:
1.39 kristaps 319: free(p->argv[i].value);
320: }
321:
1.40 kristaps 322: free(p->argv);
1.39 kristaps 323: free(p);
324: }
325:
326:
327:
1.24 kristaps 328: static int
1.39 kristaps 329: perr(struct mdoc *mdoc, int line, int pos, enum merr code)
1.25 kristaps 330: {
1.39 kristaps 331: char *p;
332:
333: p = NULL;
1.25 kristaps 334:
335: switch (code) {
336: case (EQUOTTERM):
1.39 kristaps 337: p = "unterminated quoted parameter";
1.25 kristaps 338: break;
339: case (EARGVAL):
1.39 kristaps 340: p = "argument requires a value";
1.25 kristaps 341: break;
342: }
1.39 kristaps 343:
344: assert(p);
345: return(mdoc_perr(mdoc, line, pos, p));
1.25 kristaps 346: }
347:
348:
349: static int
1.39 kristaps 350: pwarn(struct mdoc *mdoc, int line, int pos, enum mwarn code)
1.24 kristaps 351: {
1.39 kristaps 352: char *p;
1.24 kristaps 353: int c;
354:
1.39 kristaps 355: p = NULL;
356: c = WARN_SYNTAX;
357:
1.24 kristaps 358: switch (code) {
359: case (WQUOTPARM):
1.39 kristaps 360: p = "unexpected quoted parameter";
1.24 kristaps 361: break;
362: case (WARGVPARM):
1.39 kristaps 363: p = "argument-like parameter";
1.24 kristaps 364: break;
1.25 kristaps 365: case (WCOLEMPTY):
1.39 kristaps 366: p = "last list column is empty";
367: c = WARN_COMPAT;
1.25 kristaps 368: break;
369: case (WTAILWS):
1.39 kristaps 370: p = "trailing whitespace";
371: c = WARN_COMPAT;
1.25 kristaps 372: break;
1.24 kristaps 373: }
1.39 kristaps 374:
375: assert(p);
376: return(mdoc_pwarn(mdoc, line, pos, c, p));
1.24 kristaps 377: }
378:
379:
1.2 kristaps 380: int
1.22 kristaps 381: mdoc_args(struct mdoc *mdoc, int line,
382: int *pos, char *buf, int tok, char **v)
1.1 kristaps 383: {
1.26 kristaps 384: int fl, c, i;
1.22 kristaps 385: struct mdoc_node *n;
386:
1.24 kristaps 387: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
388:
389: /*
1.36 kristaps 390: * Override per-macro argument flags with context-specific ones.
391: * As of now, this is only valid for `It' depending on its list
392: * context.
1.24 kristaps 393: */
394:
1.36 kristaps 395: switch (tok) {
396: case (MDOC_It):
1.24 kristaps 397: for (n = mdoc->last; n; n = n->parent)
1.36 kristaps 398: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
399: break;
400:
1.24 kristaps 401: assert(n);
1.39 kristaps 402: c = (int)(n->args ? n->args->argc : 0);
1.24 kristaps 403: assert(c > 0);
1.26 kristaps 404:
1.36 kristaps 405: /*
406: * Using `Bl -column' adds ARGS_TABSEP to the arguments
407: * and invalidates ARGS_DELIM. Using `Bl -diag' allows
408: * for quoted arguments.
409: */
410:
1.26 kristaps 411: /* LINTED */
1.24 kristaps 412: for (i = 0; i < c; i++) {
1.39 kristaps 413: switch (n->args->argv[i].arg) {
1.35 kristaps 414: case (MDOC_Column):
415: fl |= ARGS_TABSEP;
416: fl &= ~ARGS_DELIM;
417: i = c;
418: break;
419: case (MDOC_Diag):
420: fl |= ARGS_QUOTED;
421: i = c;
422: break;
423: default:
424: break;
425: }
1.24 kristaps 426: }
1.39 kristaps 427: break;
1.36 kristaps 428: default:
429: break;
1.24 kristaps 430: }
431:
1.36 kristaps 432: /* Continue parsing the arguments themselves... */
433:
1.26 kristaps 434: return(args(mdoc, line, pos, buf, fl, v));
435: }
436:
437:
438: static int
439: args(struct mdoc *mdoc, int line,
440: int *pos, char *buf, int fl, char **v)
441: {
1.31 kristaps 442: int i;
1.26 kristaps 443: char *p, *pp;
444:
445: assert(*pos > 0);
446:
447: if (0 == buf[*pos])
448: return(ARGS_EOLN);
449:
450: if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
451: if ( ! pwarn(mdoc, line, *pos, WQUOTPARM))
452: return(ARGS_ERROR);
453:
1.38 kristaps 454: if ( ! (fl & ARGS_ARGVLIKE) && '-' == buf[*pos])
1.26 kristaps 455: if ( ! pwarn(mdoc, line, *pos, WARGVPARM))
456: return(ARGS_ERROR);
457:
1.24 kristaps 458: /*
459: * If the first character is a delimiter and we're to look for
460: * delimited strings, then pass down the buffer seeing if it
461: * follows the pattern of [[::delim::][ ]+]+.
462: */
463:
1.2 kristaps 464: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
1.31 kristaps 465: for (i = *pos; buf[i]; ) {
466: if ( ! mdoc_iscdelim(buf[i]))
1.2 kristaps 467: break;
468: i++;
1.34 kristaps 469: /* There must be at least one space... */
1.37 kristaps 470: if (0 == buf[i] || ! isspace((u_char)buf[i]))
1.34 kristaps 471: break;
472: i++;
1.37 kristaps 473: while (buf[i] && isspace((u_char)buf[i]))
1.2 kristaps 474: i++;
475: }
476: if (0 == buf[i]) {
477: *v = &buf[*pos];
478: return(ARGS_PUNCT);
479: }
480: }
481:
1.24 kristaps 482: /* First parse non-quoted strings. */
1.1 kristaps 483:
1.17 kristaps 484: if ('\"' != buf[*pos] || ! (ARGS_QUOTED & fl)) {
1.1 kristaps 485: *v = &buf[*pos];
486:
1.24 kristaps 487: /*
488: * Thar be dragons here! If we're tab-separated, search
489: * ahead for either a tab or the `Ta' macro. If a tab
490: * is detected, it mustn't be escaped; if a `Ta' is
491: * detected, it must be space-buffered before and after.
492: * If either of these hold true, then prune out the
493: * extra spaces and call it an argument.
494: */
495:
496: if (ARGS_TABSEP & fl) {
497: /* Scan ahead to unescaped tab. */
1.12 kristaps 498:
1.24 kristaps 499: for (p = *v; ; p++) {
500: if (NULL == (p = strchr(p, '\t')))
501: break;
502: if (p == *v)
503: break;
504: if ('\\' != *(p - 1))
1.12 kristaps 505: break;
506: }
1.24 kristaps 507:
508: /* Scan ahead to unescaped `Ta'. */
509:
510: for (pp = *v; ; pp++) {
511: if (NULL == (pp = strstr(pp, "Ta")))
512: break;
513: if (pp > *v && ' ' != *(pp - 1))
514: continue;
515: if (' ' == *(pp + 2) || 0 == *(pp + 2))
516: break;
517: }
518:
519: /* Choose delimiter tab/Ta. */
520:
521: if (p && pp)
522: p = (p < pp ? p : pp);
523: else if ( ! p && pp)
524: p = pp;
525:
526: /* Strip delimiter's preceding whitespace. */
527:
528: if (p && p > *v) {
529: pp = p - 1;
530: while (pp > *v && ' ' == *pp)
531: pp--;
532: if (pp == *v && ' ' == *pp)
533: *pp = 0;
534: else if (' ' == *pp)
535: *(pp + 1) = 0;
536: }
537:
538: /* ...in- and proceding whitespace. */
539:
540: if (p && ('\t' != *p)) {
541: *p++ = 0;
542: *p++ = 0;
543: } else if (p)
544: *p++ = 0;
545:
546: if (p) {
547: while (' ' == *p)
548: p++;
549: if (0 != *p)
550: *(p - 1) = 0;
1.33 kristaps 551: *pos += (int)(p - *v);
1.24 kristaps 552: }
553:
1.25 kristaps 554: if (p && 0 == *p)
555: if ( ! pwarn(mdoc, line, *pos, WCOLEMPTY))
556: return(0);
557: if (p && 0 == *p && p > *v && ' ' == *(p - 1))
558: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
559: return(0);
560:
1.26 kristaps 561: if (p)
562: return(ARGS_WORD);
563:
1.24 kristaps 564: /* Configure the eoln case, too. */
565:
1.26 kristaps 566: p = strchr(*v, 0);
567: assert(p);
568:
569: if (p > *v && ' ' == *(p - 1))
570: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
571: return(0);
1.33 kristaps 572: *pos += (int)(p - *v);
1.24 kristaps 573:
574: return(ARGS_WORD);
575: }
576:
577: /* Do non-tabsep look-ahead here. */
578:
579: if ( ! (ARGS_TABSEP & fl))
1.31 kristaps 580: while (buf[*pos]) {
1.37 kristaps 581: if (isspace((u_char)buf[*pos]))
1.17 kristaps 582: if ('\\' != buf[*pos - 1])
583: break;
1.12 kristaps 584: (*pos)++;
1.17 kristaps 585: }
1.1 kristaps 586:
587: if (0 == buf[*pos])
1.2 kristaps 588: return(ARGS_WORD);
1.1 kristaps 589:
590: buf[(*pos)++] = 0;
1.12 kristaps 591:
1.1 kristaps 592: if (0 == buf[*pos])
1.2 kristaps 593: return(ARGS_WORD);
1.1 kristaps 594:
1.12 kristaps 595: if ( ! (ARGS_TABSEP & fl))
1.37 kristaps 596: while (buf[*pos] && isspace((u_char)buf[*pos]))
1.12 kristaps 597: (*pos)++;
1.1 kristaps 598:
599: if (buf[*pos])
1.2 kristaps 600: return(ARGS_WORD);
1.1 kristaps 601:
1.25 kristaps 602: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
1.2 kristaps 603: return(ARGS_ERROR);
1.1 kristaps 604:
1.2 kristaps 605: return(ARGS_WORD);
606: }
607:
608: /*
609: * If we're a quoted string (and quoted strings are allowed),
610: * then parse ahead to the next quote. If none's found, it's an
1.4 kristaps 611: * error. After, parse to the next word.
1.2 kristaps 612: */
1.1 kristaps 613:
614: *v = &buf[++(*pos)];
615:
616: while (buf[*pos] && '\"' != buf[*pos])
617: (*pos)++;
618:
619: if (0 == buf[*pos]) {
1.25 kristaps 620: (void)perr(mdoc, line, *pos, EQUOTTERM);
1.2 kristaps 621: return(ARGS_ERROR);
1.1 kristaps 622: }
623:
624: buf[(*pos)++] = 0;
625: if (0 == buf[*pos])
1.19 kristaps 626: return(ARGS_QWORD);
1.1 kristaps 627:
1.37 kristaps 628: while (buf[*pos] && isspace((u_char)buf[*pos]))
1.1 kristaps 629: (*pos)++;
630:
631: if (buf[*pos])
1.19 kristaps 632: return(ARGS_QWORD);
1.1 kristaps 633:
1.25 kristaps 634: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
1.2 kristaps 635: return(ARGS_ERROR);
636:
1.19 kristaps 637: return(ARGS_QWORD);
1.1 kristaps 638: }
639:
640:
1.2 kristaps 641: static int
1.30 kristaps 642: argv_a2arg(int tok, const char *argv)
1.1 kristaps 643: {
644:
1.36 kristaps 645: /*
646: * Parse an argument identifier from its text. XXX - this
647: * should really be table-driven to clarify the code.
648: *
649: * If you add an argument to the list, make sure that you
650: * register it here with its one or more macros!
651: */
652:
1.1 kristaps 653: switch (tok) {
1.6 kristaps 654: case (MDOC_An):
655: if (xstrcmp(argv, "split"))
656: return(MDOC_Split);
657: else if (xstrcmp(argv, "nosplit"))
658: return(MDOC_Nosplit);
659: break;
660:
1.2 kristaps 661: case (MDOC_Bd):
1.1 kristaps 662: if (xstrcmp(argv, "ragged"))
663: return(MDOC_Ragged);
664: else if (xstrcmp(argv, "unfilled"))
665: return(MDOC_Unfilled);
1.13 kristaps 666: else if (xstrcmp(argv, "filled"))
667: return(MDOC_Filled);
1.1 kristaps 668: else if (xstrcmp(argv, "literal"))
669: return(MDOC_Literal);
670: else if (xstrcmp(argv, "file"))
671: return(MDOC_File);
672: else if (xstrcmp(argv, "offset"))
673: return(MDOC_Offset);
1.2 kristaps 674: break;
675:
1.8 kristaps 676: case (MDOC_Bf):
677: if (xstrcmp(argv, "emphasis"))
678: return(MDOC_Emphasis);
679: else if (xstrcmp(argv, "literal"))
680: return(MDOC_Literal);
681: else if (xstrcmp(argv, "symbolic"))
682: return(MDOC_Symbolic);
683: break;
684:
1.7 kristaps 685: case (MDOC_Bk):
686: if (xstrcmp(argv, "words"))
687: return(MDOC_Words);
688: break;
689:
1.2 kristaps 690: case (MDOC_Bl):
691: if (xstrcmp(argv, "bullet"))
1.1 kristaps 692: return(MDOC_Bullet);
693: else if (xstrcmp(argv, "dash"))
694: return(MDOC_Dash);
695: else if (xstrcmp(argv, "hyphen"))
696: return(MDOC_Hyphen);
697: else if (xstrcmp(argv, "item"))
698: return(MDOC_Item);
699: else if (xstrcmp(argv, "enum"))
700: return(MDOC_Enum);
701: else if (xstrcmp(argv, "tag"))
702: return(MDOC_Tag);
703: else if (xstrcmp(argv, "diag"))
704: return(MDOC_Diag);
705: else if (xstrcmp(argv, "hang"))
706: return(MDOC_Hang);
707: else if (xstrcmp(argv, "ohang"))
708: return(MDOC_Ohang);
709: else if (xstrcmp(argv, "inset"))
710: return(MDOC_Inset);
711: else if (xstrcmp(argv, "column"))
712: return(MDOC_Column);
713: else if (xstrcmp(argv, "width"))
714: return(MDOC_Width);
1.2 kristaps 715: else if (xstrcmp(argv, "offset"))
716: return(MDOC_Offset);
1.1 kristaps 717: else if (xstrcmp(argv, "compact"))
718: return(MDOC_Compact);
1.2 kristaps 719: break;
1.3 kristaps 720:
721: case (MDOC_Rv):
722: /* FALLTHROUGH */
723: case (MDOC_Ex):
724: if (xstrcmp(argv, "std"))
725: return(MDOC_Std);
726: break;
1.1 kristaps 727: default:
1.8 kristaps 728: break;
1.1 kristaps 729: }
730:
731: return(MDOC_ARG_MAX);
732: }
733:
734:
1.2 kristaps 735: static int
1.26 kristaps 736: argv_multi(struct mdoc *mdoc, int line,
1.39 kristaps 737: struct mdoc_argv *v, int *pos, char *buf)
1.12 kristaps 738: {
739: int c, ppos;
740: char *p;
741:
742: ppos = *pos;
743:
1.39 kristaps 744: for (v->sz = 0; ; v->sz++) {
1.12 kristaps 745: if ('-' == buf[*pos])
746: break;
1.26 kristaps 747: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
1.39 kristaps 748: if (ARGS_ERROR == c)
1.12 kristaps 749: return(0);
1.39 kristaps 750: else if (ARGS_EOLN == c)
1.12 kristaps 751: break;
1.39 kristaps 752:
753: if (0 == v->sz % 5)
754: v->value = xrealloc(v->value,
755: (v->sz + 5) * sizeof(char *));
756:
1.40 kristaps 757: v->value[(int)v->sz] = xstrdup(p);
1.12 kristaps 758: }
759:
1.39 kristaps 760: if (v->sz)
1.12 kristaps 761: return(1);
762:
1.39 kristaps 763: return(perr(mdoc, line, ppos, EARGVAL));
1.12 kristaps 764: }
765:
766:
767: static int
1.36 kristaps 768: argv_opt_single(struct mdoc *mdoc, int line,
1.39 kristaps 769: struct mdoc_argv *v, int *pos, char *buf)
1.36 kristaps 770: {
1.39 kristaps 771: int c;
1.36 kristaps 772: char *p;
773:
774: if ('-' == buf[*pos])
775: return(1);
776:
777: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
778: if (ARGS_ERROR == c)
779: return(0);
780: if (ARGS_EOLN == c)
781: return(1);
782:
783: v->sz = 1;
784: v->value = xcalloc(1, sizeof(char *));
1.40 kristaps 785: v->value[0] = xstrdup(p);
1.36 kristaps 786: return(1);
787: }
788:
789:
790: /*
791: * Parse a single, mandatory value from the stream.
792: */
793: static int
1.26 kristaps 794: argv_single(struct mdoc *mdoc, int line,
1.39 kristaps 795: struct mdoc_argv *v, int *pos, char *buf)
1.1 kristaps 796: {
1.12 kristaps 797: int c, ppos;
1.1 kristaps 798: char *p;
799:
800: ppos = *pos;
801:
1.26 kristaps 802: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
1.12 kristaps 803: if (ARGS_ERROR == c)
804: return(0);
805: if (ARGS_EOLN == c)
1.36 kristaps 806: return(perr(mdoc, line, ppos, EARGVAL));
1.12 kristaps 807:
808: v->sz = 1;
809: v->value = xcalloc(1, sizeof(char *));
1.40 kristaps 810: v->value[0] = xstrdup(p);
1.12 kristaps 811: return(1);
812: }
813:
814:
1.36 kristaps 815: /*
816: * Determine rules for parsing arguments. Arguments can either accept
817: * no parameters, an optional single parameter, one parameter, or
818: * multiple parameters.
819: */
1.12 kristaps 820: static int
1.37 kristaps 821: argv(struct mdoc *mdoc, int tok, int line,
1.39 kristaps 822: struct mdoc_argv *v, int *pos, char *buf)
1.12 kristaps 823: {
1.37 kristaps 824: int fl;
1.12 kristaps 825:
826: v->sz = 0;
827: v->value = NULL;
1.37 kristaps 828: fl = mdoc_argvflags[v->arg];
1.12 kristaps 829:
1.37 kristaps 830: /*
831: * Override the default per-argument value.
832: */
833:
834: switch (tok) {
835: case (MDOC_Ex):
836: fl = ARGV_OPT_SINGLE;
837: break;
838: default:
839: break;
840: }
841:
842: switch (fl) {
1.36 kristaps 843: case (ARGV_SINGLE):
1.26 kristaps 844: return(argv_single(mdoc, line, v, pos, buf));
1.36 kristaps 845: case (ARGV_MULTI):
1.26 kristaps 846: return(argv_multi(mdoc, line, v, pos, buf));
1.36 kristaps 847: case (ARGV_OPT_SINGLE):
848: return(argv_opt_single(mdoc, line, v, pos, buf));
1.1 kristaps 849: default:
1.36 kristaps 850: /* ARGV_NONE */
1.6 kristaps 851: break;
1.1 kristaps 852: }
853:
854: return(1);
855: }
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