Annotation of mandoc/argv.c, Revision 1.40
1.40 ! kristaps 1: /* $Id: argv.c,v 1.39 2009/03/08 11:41:22 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: */
19: #include <assert.h>
20: #include <ctype.h>
21: #include <err.h>
22: #include <stdlib.h>
23: #include <stdio.h>
24: #include <string.h>
25:
26: #include "private.h"
27:
1.20 kristaps 28: /*
1.27 kristaps 29: * Routines to parse arguments of macros. Arguments follow the syntax
30: * of `-arg [val [valN...]]'. Arguments come in all types: quoted
31: * arguments, multiple arguments per value, no-value arguments, etc.
1.39 kristaps 32: *
33: * There's no limit to the number or arguments that may be allocated.
1.20 kristaps 34: */
35:
1.24 kristaps 36: #define ARGS_QUOTED (1 << 0)
37: #define ARGS_DELIM (1 << 1)
38: #define ARGS_TABSEP (1 << 2)
1.38 kristaps 39: #define ARGS_ARGVLIKE (1 << 3)
1.15 kristaps 40:
1.36 kristaps 41: #define ARGV_NONE (1 << 0)
42: #define ARGV_SINGLE (1 << 1)
43: #define ARGV_MULTI (1 << 2)
44: #define ARGV_OPT_SINGLE (1 << 3)
45:
1.39 kristaps 46: enum mwarn {
47: WQUOTPARM,
48: WARGVPARM,
49: WCOLEMPTY,
50: WTAILWS
51: };
52:
53: enum merr {
54: EQUOTTERM,
55: EARGVAL
56: };
57:
1.30 kristaps 58: static int argv_a2arg(int, const char *);
1.26 kristaps 59: static int args(struct mdoc *, int, int *,
60: char *, int, char **);
1.37 kristaps 61: static int argv(struct mdoc *, int, int,
1.39 kristaps 62: struct mdoc_argv *, int *, char *);
1.26 kristaps 63: static int argv_single(struct mdoc *, int,
1.39 kristaps 64: struct mdoc_argv *, int *, char *);
1.36 kristaps 65: static int argv_opt_single(struct mdoc *, int,
1.39 kristaps 66: struct mdoc_argv *, int *, char *);
1.26 kristaps 67: static int argv_multi(struct mdoc *, int,
1.39 kristaps 68: struct mdoc_argv *, int *, char *);
69: static int pwarn(struct mdoc *, int, int, enum mwarn);
70: static int perr(struct mdoc *, int, int, enum merr);
1.22 kristaps 71:
1.36 kristaps 72: /* Per-argument flags. */
73:
74: static int mdoc_argvflags[MDOC_ARG_MAX] = {
75: ARGV_NONE, /* MDOC_Split */
76: ARGV_NONE, /* MDOC_Nosplit */
77: ARGV_NONE, /* MDOC_Ragged */
78: ARGV_NONE, /* MDOC_Unfilled */
79: ARGV_NONE, /* MDOC_Literal */
80: ARGV_NONE, /* MDOC_File */
81: ARGV_SINGLE, /* MDOC_Offset */
82: ARGV_NONE, /* MDOC_Bullet */
83: ARGV_NONE, /* MDOC_Dash */
84: ARGV_NONE, /* MDOC_Hyphen */
85: ARGV_NONE, /* MDOC_Item */
86: ARGV_NONE, /* MDOC_Enum */
87: ARGV_NONE, /* MDOC_Tag */
88: ARGV_NONE, /* MDOC_Diag */
89: ARGV_NONE, /* MDOC_Hang */
90: ARGV_NONE, /* MDOC_Ohang */
91: ARGV_NONE, /* MDOC_Inset */
92: ARGV_MULTI, /* MDOC_Column */
93: ARGV_SINGLE, /* MDOC_Width */
94: ARGV_NONE, /* MDOC_Compact */
1.37 kristaps 95: ARGV_SINGLE, /* MDOC_Std */
1.36 kristaps 96: ARGV_NONE, /* MDOC_Filled */
97: ARGV_NONE, /* MDOC_Words */
98: ARGV_NONE, /* MDOC_Emphasis */
99: ARGV_NONE /* MDOC_Symbolic */
100: };
101:
1.22 kristaps 102: static int mdoc_argflags[MDOC_MAX] = {
103: 0, /* \" */
104: 0, /* Dd */
105: 0, /* Dt */
106: 0, /* Os */
107: 0, /* Sh */
108: 0, /* Ss */
109: ARGS_DELIM, /* Pp */
110: ARGS_DELIM, /* D1 */
111: ARGS_DELIM, /* Dl */
112: 0, /* Bd */
113: 0, /* Ed */
114: 0, /* Bl */
115: 0, /* El */
1.32 kristaps 116: 0, /* It */
1.22 kristaps 117: ARGS_DELIM, /* Ad */
118: ARGS_DELIM, /* An */
119: ARGS_DELIM, /* Ar */
120: ARGS_QUOTED, /* Cd */
121: ARGS_DELIM, /* Cm */
122: ARGS_DELIM, /* Dv */
123: ARGS_DELIM, /* Er */
124: ARGS_DELIM, /* Ev */
125: 0, /* Ex */
126: ARGS_DELIM | ARGS_QUOTED, /* Fa */
127: 0, /* Fd */
128: ARGS_DELIM, /* Fl */
129: ARGS_DELIM | ARGS_QUOTED, /* Fn */
130: ARGS_DELIM | ARGS_QUOTED, /* Ft */
131: ARGS_DELIM, /* Ic */
132: 0, /* In */
133: ARGS_DELIM, /* Li */
134: 0, /* Nd */
135: ARGS_DELIM, /* Nm */
136: ARGS_DELIM, /* Op */
137: 0, /* Ot */
138: ARGS_DELIM, /* Pa */
139: 0, /* Rv */
1.38 kristaps 140: ARGS_DELIM | ARGS_ARGVLIKE, /* St */
1.22 kristaps 141: ARGS_DELIM, /* Va */
142: ARGS_DELIM, /* Vt */
143: ARGS_DELIM, /* Xr */
144: ARGS_QUOTED, /* %A */
145: ARGS_QUOTED, /* %B */
146: ARGS_QUOTED, /* %D */
147: ARGS_QUOTED, /* %I */
148: ARGS_QUOTED, /* %J */
149: ARGS_QUOTED, /* %N */
150: ARGS_QUOTED, /* %O */
151: ARGS_QUOTED, /* %P */
152: ARGS_QUOTED, /* %R */
153: ARGS_QUOTED, /* %T */
154: ARGS_QUOTED, /* %V */
155: ARGS_DELIM, /* Ac */
156: 0, /* Ao */
157: ARGS_DELIM, /* Aq */
158: ARGS_DELIM, /* At */
159: ARGS_DELIM, /* Bc */
160: 0, /* Bf */
161: 0, /* Bo */
162: ARGS_DELIM, /* Bq */
163: ARGS_DELIM, /* Bsx */
164: ARGS_DELIM, /* Bx */
165: 0, /* Db */
166: ARGS_DELIM, /* Dc */
167: 0, /* Do */
168: ARGS_DELIM, /* Dq */
169: ARGS_DELIM, /* Ec */
170: 0, /* Ef */
171: ARGS_DELIM, /* Em */
172: 0, /* Eo */
173: ARGS_DELIM, /* Fx */
174: ARGS_DELIM, /* Ms */
175: ARGS_DELIM, /* No */
176: ARGS_DELIM, /* Ns */
177: ARGS_DELIM, /* Nx */
178: ARGS_DELIM, /* Ox */
179: ARGS_DELIM, /* Pc */
180: ARGS_DELIM, /* Pf */
181: 0, /* Po */
182: ARGS_DELIM, /* Pq */
183: ARGS_DELIM, /* Qc */
184: ARGS_DELIM, /* Ql */
185: 0, /* Qo */
186: ARGS_DELIM, /* Qq */
187: 0, /* Re */
188: 0, /* Rs */
189: ARGS_DELIM, /* Sc */
190: 0, /* So */
191: ARGS_DELIM, /* Sq */
192: 0, /* Sm */
193: ARGS_DELIM, /* Sx */
194: ARGS_DELIM, /* Sy */
195: ARGS_DELIM, /* Tn */
196: ARGS_DELIM, /* Ux */
197: ARGS_DELIM, /* Xc */
198: 0, /* Xo */
199: 0, /* Fo */
200: 0, /* Fc */
201: 0, /* Oo */
202: ARGS_DELIM, /* Oc */
203: 0, /* Bk */
204: 0, /* Ek */
205: 0, /* Bt */
206: 0, /* Hf */
207: 0, /* Fr */
208: 0, /* Ud */
1.38 kristaps 209: 0, /* Lb */
1.22 kristaps 210: };
211:
1.1 kristaps 212:
1.39 kristaps 213: /*
214: * Parse an argument from line text. This comes in the form of -key
215: * [value0...], which may either have a single mandatory value, at least
216: * one mandatory value, an optional single value, or no value.
217: */
218: int
219: mdoc_argv(struct mdoc *mdoc, int line, int tok,
220: struct mdoc_arg **v, int *pos, char *buf)
221: {
222: int i;
223: char *p;
224: struct mdoc_argv tmp;
225: struct mdoc_arg *arg;
226:
227: if (0 == buf[*pos])
228: return(ARGV_EOLN);
229:
230: assert( ! isspace((u_char)buf[*pos]));
231:
232: if ('-' != buf[*pos])
233: return(ARGV_WORD);
234:
235: i = *pos;
236: p = &buf[++(*pos)];
237:
238: assert(*pos > 0);
239:
240: /* LINTED */
241: while (buf[*pos]) {
242: if (isspace((u_char)buf[*pos]))
243: if ('\\' != buf[*pos - 1])
244: break;
245: (*pos)++;
246: }
247:
248: if (buf[*pos])
249: buf[(*pos)++] = 0;
250:
251: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
252: tmp.line = line;
253: tmp.pos = *pos;
254:
255: /*
256: * We now parse out the per-macro arguments. XXX - this can be
257: * made much cleaner using per-argument tables. See argv_a2arg
258: * for details.
259: */
260:
261: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
262: if ( ! pwarn(mdoc, line, i, WARGVPARM))
263: return(ARGV_ERROR);
264: return(ARGV_WORD);
265: }
266:
267: while (buf[*pos] && isspace((u_char)buf[*pos]))
268: (*pos)++;
269:
270: /* FIXME: whitespace if no value. */
271:
272: if ( ! argv(mdoc, tok, line, &tmp, pos, buf))
273: return(ARGV_ERROR);
274:
275: if (NULL == (arg = *v)) {
1.40 ! kristaps 276: *v = xcalloc(1, sizeof(struct mdoc_arg));
1.39 kristaps 277: arg = *v;
1.40 ! kristaps 278: }
1.39 kristaps 279:
280: arg->argc++;
281: arg->argv = xrealloc(arg->argv, arg->argc *
1.40 ! kristaps 282: sizeof(struct mdoc_argv));
1.39 kristaps 283:
284: (void)memcpy(&arg->argv[(int)arg->argc - 1],
285: &tmp, sizeof(struct mdoc_argv));
286:
287: return(ARGV_ARG);
288: }
289:
290:
291: void
292: mdoc_argv_free(struct mdoc_arg *p)
293: {
294: int i, j;
295:
1.40 ! kristaps 296: if (p->refcnt) {
! 297: --(p->refcnt);
! 298: if (p->refcnt)
! 299: return;
! 300: }
! 301:
! 302: assert(p->argc);
1.39 kristaps 303:
304: /* LINTED */
305: for (i = 0; i < (int)p->argc; i++) {
306: if (0 == p->argv[i].sz)
307: continue;
308: /* LINTED */
309: for (j = 0; j < (int)p->argv[i].sz; j++)
310: free(p->argv[i].value[j]);
1.40 ! kristaps 311:
1.39 kristaps 312: free(p->argv[i].value);
313: }
314:
1.40 ! kristaps 315: free(p->argv);
1.39 kristaps 316: free(p);
317: }
318:
319:
320:
1.24 kristaps 321: static int
1.39 kristaps 322: perr(struct mdoc *mdoc, int line, int pos, enum merr code)
1.25 kristaps 323: {
1.39 kristaps 324: char *p;
325:
326: p = NULL;
1.25 kristaps 327:
328: switch (code) {
329: case (EQUOTTERM):
1.39 kristaps 330: p = "unterminated quoted parameter";
1.25 kristaps 331: break;
332: case (EARGVAL):
1.39 kristaps 333: p = "argument requires a value";
1.25 kristaps 334: break;
335: }
1.39 kristaps 336:
337: assert(p);
338: return(mdoc_perr(mdoc, line, pos, p));
1.25 kristaps 339: }
340:
341:
342: static int
1.39 kristaps 343: pwarn(struct mdoc *mdoc, int line, int pos, enum mwarn code)
1.24 kristaps 344: {
1.39 kristaps 345: char *p;
1.24 kristaps 346: int c;
347:
1.39 kristaps 348: p = NULL;
349: c = WARN_SYNTAX;
350:
1.24 kristaps 351: switch (code) {
352: case (WQUOTPARM):
1.39 kristaps 353: p = "unexpected quoted parameter";
1.24 kristaps 354: break;
355: case (WARGVPARM):
1.39 kristaps 356: p = "argument-like parameter";
1.24 kristaps 357: break;
1.25 kristaps 358: case (WCOLEMPTY):
1.39 kristaps 359: p = "last list column is empty";
360: c = WARN_COMPAT;
1.25 kristaps 361: break;
362: case (WTAILWS):
1.39 kristaps 363: p = "trailing whitespace";
364: c = WARN_COMPAT;
1.25 kristaps 365: break;
1.24 kristaps 366: }
1.39 kristaps 367:
368: assert(p);
369: return(mdoc_pwarn(mdoc, line, pos, c, p));
1.24 kristaps 370: }
371:
372:
1.2 kristaps 373: int
1.22 kristaps 374: mdoc_args(struct mdoc *mdoc, int line,
375: int *pos, char *buf, int tok, char **v)
1.1 kristaps 376: {
1.26 kristaps 377: int fl, c, i;
1.22 kristaps 378: struct mdoc_node *n;
379:
1.24 kristaps 380: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
381:
382: /*
1.36 kristaps 383: * Override per-macro argument flags with context-specific ones.
384: * As of now, this is only valid for `It' depending on its list
385: * context.
1.24 kristaps 386: */
387:
1.36 kristaps 388: switch (tok) {
389: case (MDOC_It):
1.24 kristaps 390: for (n = mdoc->last; n; n = n->parent)
1.36 kristaps 391: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
392: break;
393:
1.24 kristaps 394: assert(n);
1.39 kristaps 395: c = (int)(n->args ? n->args->argc : 0);
1.24 kristaps 396: assert(c > 0);
1.26 kristaps 397:
1.36 kristaps 398: /*
399: * Using `Bl -column' adds ARGS_TABSEP to the arguments
400: * and invalidates ARGS_DELIM. Using `Bl -diag' allows
401: * for quoted arguments.
402: */
403:
1.26 kristaps 404: /* LINTED */
1.24 kristaps 405: for (i = 0; i < c; i++) {
1.39 kristaps 406: switch (n->args->argv[i].arg) {
1.35 kristaps 407: case (MDOC_Column):
408: fl |= ARGS_TABSEP;
409: fl &= ~ARGS_DELIM;
410: i = c;
411: break;
412: case (MDOC_Diag):
413: fl |= ARGS_QUOTED;
414: i = c;
415: break;
416: default:
417: break;
418: }
1.24 kristaps 419: }
1.39 kristaps 420: break;
1.36 kristaps 421: default:
422: break;
1.24 kristaps 423: }
424:
1.36 kristaps 425: /* Continue parsing the arguments themselves... */
426:
1.26 kristaps 427: return(args(mdoc, line, pos, buf, fl, v));
428: }
429:
430:
431: static int
432: args(struct mdoc *mdoc, int line,
433: int *pos, char *buf, int fl, char **v)
434: {
1.31 kristaps 435: int i;
1.26 kristaps 436: char *p, *pp;
437:
438: assert(*pos > 0);
439:
440: if (0 == buf[*pos])
441: return(ARGS_EOLN);
442:
443: if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
444: if ( ! pwarn(mdoc, line, *pos, WQUOTPARM))
445: return(ARGS_ERROR);
446:
1.38 kristaps 447: if ( ! (fl & ARGS_ARGVLIKE) && '-' == buf[*pos])
1.26 kristaps 448: if ( ! pwarn(mdoc, line, *pos, WARGVPARM))
449: return(ARGS_ERROR);
450:
1.24 kristaps 451: /*
452: * If the first character is a delimiter and we're to look for
453: * delimited strings, then pass down the buffer seeing if it
454: * follows the pattern of [[::delim::][ ]+]+.
455: */
456:
1.2 kristaps 457: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
1.31 kristaps 458: for (i = *pos; buf[i]; ) {
459: if ( ! mdoc_iscdelim(buf[i]))
1.2 kristaps 460: break;
461: i++;
1.34 kristaps 462: /* There must be at least one space... */
1.37 kristaps 463: if (0 == buf[i] || ! isspace((u_char)buf[i]))
1.34 kristaps 464: break;
465: i++;
1.37 kristaps 466: while (buf[i] && isspace((u_char)buf[i]))
1.2 kristaps 467: i++;
468: }
469: if (0 == buf[i]) {
470: *v = &buf[*pos];
471: return(ARGS_PUNCT);
472: }
473: }
474:
1.24 kristaps 475: /* First parse non-quoted strings. */
1.1 kristaps 476:
1.17 kristaps 477: if ('\"' != buf[*pos] || ! (ARGS_QUOTED & fl)) {
1.1 kristaps 478: *v = &buf[*pos];
479:
1.24 kristaps 480: /*
481: * Thar be dragons here! If we're tab-separated, search
482: * ahead for either a tab or the `Ta' macro. If a tab
483: * is detected, it mustn't be escaped; if a `Ta' is
484: * detected, it must be space-buffered before and after.
485: * If either of these hold true, then prune out the
486: * extra spaces and call it an argument.
487: */
488:
489: if (ARGS_TABSEP & fl) {
490: /* Scan ahead to unescaped tab. */
1.12 kristaps 491:
1.24 kristaps 492: for (p = *v; ; p++) {
493: if (NULL == (p = strchr(p, '\t')))
494: break;
495: if (p == *v)
496: break;
497: if ('\\' != *(p - 1))
1.12 kristaps 498: break;
499: }
1.24 kristaps 500:
501: /* Scan ahead to unescaped `Ta'. */
502:
503: for (pp = *v; ; pp++) {
504: if (NULL == (pp = strstr(pp, "Ta")))
505: break;
506: if (pp > *v && ' ' != *(pp - 1))
507: continue;
508: if (' ' == *(pp + 2) || 0 == *(pp + 2))
509: break;
510: }
511:
512: /* Choose delimiter tab/Ta. */
513:
514: if (p && pp)
515: p = (p < pp ? p : pp);
516: else if ( ! p && pp)
517: p = pp;
518:
519: /* Strip delimiter's preceding whitespace. */
520:
521: if (p && p > *v) {
522: pp = p - 1;
523: while (pp > *v && ' ' == *pp)
524: pp--;
525: if (pp == *v && ' ' == *pp)
526: *pp = 0;
527: else if (' ' == *pp)
528: *(pp + 1) = 0;
529: }
530:
531: /* ...in- and proceding whitespace. */
532:
533: if (p && ('\t' != *p)) {
534: *p++ = 0;
535: *p++ = 0;
536: } else if (p)
537: *p++ = 0;
538:
539: if (p) {
540: while (' ' == *p)
541: p++;
542: if (0 != *p)
543: *(p - 1) = 0;
1.33 kristaps 544: *pos += (int)(p - *v);
1.24 kristaps 545: }
546:
1.25 kristaps 547: if (p && 0 == *p)
548: if ( ! pwarn(mdoc, line, *pos, WCOLEMPTY))
549: return(0);
550: if (p && 0 == *p && p > *v && ' ' == *(p - 1))
551: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
552: return(0);
553:
1.26 kristaps 554: if (p)
555: return(ARGS_WORD);
556:
1.24 kristaps 557: /* Configure the eoln case, too. */
558:
1.26 kristaps 559: p = strchr(*v, 0);
560: assert(p);
561:
562: if (p > *v && ' ' == *(p - 1))
563: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
564: return(0);
1.33 kristaps 565: *pos += (int)(p - *v);
1.24 kristaps 566:
567: return(ARGS_WORD);
568: }
569:
570: /* Do non-tabsep look-ahead here. */
571:
572: if ( ! (ARGS_TABSEP & fl))
1.31 kristaps 573: while (buf[*pos]) {
1.37 kristaps 574: if (isspace((u_char)buf[*pos]))
1.17 kristaps 575: if ('\\' != buf[*pos - 1])
576: break;
1.12 kristaps 577: (*pos)++;
1.17 kristaps 578: }
1.1 kristaps 579:
580: if (0 == buf[*pos])
1.2 kristaps 581: return(ARGS_WORD);
1.1 kristaps 582:
583: buf[(*pos)++] = 0;
1.12 kristaps 584:
1.1 kristaps 585: if (0 == buf[*pos])
1.2 kristaps 586: return(ARGS_WORD);
1.1 kristaps 587:
1.12 kristaps 588: if ( ! (ARGS_TABSEP & fl))
1.37 kristaps 589: while (buf[*pos] && isspace((u_char)buf[*pos]))
1.12 kristaps 590: (*pos)++;
1.1 kristaps 591:
592: if (buf[*pos])
1.2 kristaps 593: return(ARGS_WORD);
1.1 kristaps 594:
1.25 kristaps 595: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
1.2 kristaps 596: return(ARGS_ERROR);
1.1 kristaps 597:
1.2 kristaps 598: return(ARGS_WORD);
599: }
600:
601: /*
602: * If we're a quoted string (and quoted strings are allowed),
603: * then parse ahead to the next quote. If none's found, it's an
1.4 kristaps 604: * error. After, parse to the next word.
1.2 kristaps 605: */
1.1 kristaps 606:
607: *v = &buf[++(*pos)];
608:
609: while (buf[*pos] && '\"' != buf[*pos])
610: (*pos)++;
611:
612: if (0 == buf[*pos]) {
1.25 kristaps 613: (void)perr(mdoc, line, *pos, EQUOTTERM);
1.2 kristaps 614: return(ARGS_ERROR);
1.1 kristaps 615: }
616:
617: buf[(*pos)++] = 0;
618: if (0 == buf[*pos])
1.19 kristaps 619: return(ARGS_QWORD);
1.1 kristaps 620:
1.37 kristaps 621: while (buf[*pos] && isspace((u_char)buf[*pos]))
1.1 kristaps 622: (*pos)++;
623:
624: if (buf[*pos])
1.19 kristaps 625: return(ARGS_QWORD);
1.1 kristaps 626:
1.25 kristaps 627: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
1.2 kristaps 628: return(ARGS_ERROR);
629:
1.19 kristaps 630: return(ARGS_QWORD);
1.1 kristaps 631: }
632:
633:
1.2 kristaps 634: static int
1.30 kristaps 635: argv_a2arg(int tok, const char *argv)
1.1 kristaps 636: {
637:
1.36 kristaps 638: /*
639: * Parse an argument identifier from its text. XXX - this
640: * should really be table-driven to clarify the code.
641: *
642: * If you add an argument to the list, make sure that you
643: * register it here with its one or more macros!
644: */
645:
1.1 kristaps 646: switch (tok) {
1.6 kristaps 647: case (MDOC_An):
648: if (xstrcmp(argv, "split"))
649: return(MDOC_Split);
650: else if (xstrcmp(argv, "nosplit"))
651: return(MDOC_Nosplit);
652: break;
653:
1.2 kristaps 654: case (MDOC_Bd):
1.1 kristaps 655: if (xstrcmp(argv, "ragged"))
656: return(MDOC_Ragged);
657: else if (xstrcmp(argv, "unfilled"))
658: return(MDOC_Unfilled);
1.13 kristaps 659: else if (xstrcmp(argv, "filled"))
660: return(MDOC_Filled);
1.1 kristaps 661: else if (xstrcmp(argv, "literal"))
662: return(MDOC_Literal);
663: else if (xstrcmp(argv, "file"))
664: return(MDOC_File);
665: else if (xstrcmp(argv, "offset"))
666: return(MDOC_Offset);
1.2 kristaps 667: break;
668:
1.8 kristaps 669: case (MDOC_Bf):
670: if (xstrcmp(argv, "emphasis"))
671: return(MDOC_Emphasis);
672: else if (xstrcmp(argv, "literal"))
673: return(MDOC_Literal);
674: else if (xstrcmp(argv, "symbolic"))
675: return(MDOC_Symbolic);
676: break;
677:
1.7 kristaps 678: case (MDOC_Bk):
679: if (xstrcmp(argv, "words"))
680: return(MDOC_Words);
681: break;
682:
1.2 kristaps 683: case (MDOC_Bl):
684: if (xstrcmp(argv, "bullet"))
1.1 kristaps 685: return(MDOC_Bullet);
686: else if (xstrcmp(argv, "dash"))
687: return(MDOC_Dash);
688: else if (xstrcmp(argv, "hyphen"))
689: return(MDOC_Hyphen);
690: else if (xstrcmp(argv, "item"))
691: return(MDOC_Item);
692: else if (xstrcmp(argv, "enum"))
693: return(MDOC_Enum);
694: else if (xstrcmp(argv, "tag"))
695: return(MDOC_Tag);
696: else if (xstrcmp(argv, "diag"))
697: return(MDOC_Diag);
698: else if (xstrcmp(argv, "hang"))
699: return(MDOC_Hang);
700: else if (xstrcmp(argv, "ohang"))
701: return(MDOC_Ohang);
702: else if (xstrcmp(argv, "inset"))
703: return(MDOC_Inset);
704: else if (xstrcmp(argv, "column"))
705: return(MDOC_Column);
706: else if (xstrcmp(argv, "width"))
707: return(MDOC_Width);
1.2 kristaps 708: else if (xstrcmp(argv, "offset"))
709: return(MDOC_Offset);
1.1 kristaps 710: else if (xstrcmp(argv, "compact"))
711: return(MDOC_Compact);
1.2 kristaps 712: break;
1.3 kristaps 713:
714: case (MDOC_Rv):
715: /* FALLTHROUGH */
716: case (MDOC_Ex):
717: if (xstrcmp(argv, "std"))
718: return(MDOC_Std);
719: break;
1.1 kristaps 720: default:
1.8 kristaps 721: break;
1.1 kristaps 722: }
723:
724: return(MDOC_ARG_MAX);
725: }
726:
727:
1.2 kristaps 728: static int
1.26 kristaps 729: argv_multi(struct mdoc *mdoc, int line,
1.39 kristaps 730: struct mdoc_argv *v, int *pos, char *buf)
1.12 kristaps 731: {
732: int c, ppos;
733: char *p;
734:
735: ppos = *pos;
736:
1.39 kristaps 737: for (v->sz = 0; ; v->sz++) {
1.12 kristaps 738: if ('-' == buf[*pos])
739: break;
1.26 kristaps 740: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
1.39 kristaps 741: if (ARGS_ERROR == c)
1.12 kristaps 742: return(0);
1.39 kristaps 743: else if (ARGS_EOLN == c)
1.12 kristaps 744: break;
1.39 kristaps 745:
746: if (0 == v->sz % 5)
747: v->value = xrealloc(v->value,
748: (v->sz + 5) * sizeof(char *));
749:
1.40 ! kristaps 750: v->value[(int)v->sz] = xstrdup(p);
1.12 kristaps 751: }
752:
1.39 kristaps 753: if (v->sz)
1.12 kristaps 754: return(1);
755:
1.39 kristaps 756: return(perr(mdoc, line, ppos, EARGVAL));
1.12 kristaps 757: }
758:
759:
760: static int
1.36 kristaps 761: argv_opt_single(struct mdoc *mdoc, int line,
1.39 kristaps 762: struct mdoc_argv *v, int *pos, char *buf)
1.36 kristaps 763: {
1.39 kristaps 764: int c;
1.36 kristaps 765: char *p;
766:
767: if ('-' == buf[*pos])
768: return(1);
769:
770: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
771: if (ARGS_ERROR == c)
772: return(0);
773: if (ARGS_EOLN == c)
774: return(1);
775:
776: v->sz = 1;
777: v->value = xcalloc(1, sizeof(char *));
1.40 ! kristaps 778: v->value[0] = xstrdup(p);
1.36 kristaps 779: return(1);
780: }
781:
782:
783: /*
784: * Parse a single, mandatory value from the stream.
785: */
786: static int
1.26 kristaps 787: argv_single(struct mdoc *mdoc, int line,
1.39 kristaps 788: struct mdoc_argv *v, int *pos, char *buf)
1.1 kristaps 789: {
1.12 kristaps 790: int c, ppos;
1.1 kristaps 791: char *p;
792:
793: ppos = *pos;
794:
1.26 kristaps 795: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
1.12 kristaps 796: if (ARGS_ERROR == c)
797: return(0);
798: if (ARGS_EOLN == c)
1.36 kristaps 799: return(perr(mdoc, line, ppos, EARGVAL));
1.12 kristaps 800:
801: v->sz = 1;
802: v->value = xcalloc(1, sizeof(char *));
1.40 ! kristaps 803: v->value[0] = xstrdup(p);
1.12 kristaps 804: return(1);
805: }
806:
807:
1.36 kristaps 808: /*
809: * Determine rules for parsing arguments. Arguments can either accept
810: * no parameters, an optional single parameter, one parameter, or
811: * multiple parameters.
812: */
1.12 kristaps 813: static int
1.37 kristaps 814: argv(struct mdoc *mdoc, int tok, int line,
1.39 kristaps 815: struct mdoc_argv *v, int *pos, char *buf)
1.12 kristaps 816: {
1.37 kristaps 817: int fl;
1.12 kristaps 818:
819: v->sz = 0;
820: v->value = NULL;
1.37 kristaps 821: fl = mdoc_argvflags[v->arg];
1.12 kristaps 822:
1.37 kristaps 823: /*
824: * Override the default per-argument value.
825: */
826:
827: switch (tok) {
828: case (MDOC_Ex):
829: fl = ARGV_OPT_SINGLE;
830: break;
831: default:
832: break;
833: }
834:
835: switch (fl) {
1.36 kristaps 836: case (ARGV_SINGLE):
1.26 kristaps 837: return(argv_single(mdoc, line, v, pos, buf));
1.36 kristaps 838: case (ARGV_MULTI):
1.26 kristaps 839: return(argv_multi(mdoc, line, v, pos, buf));
1.36 kristaps 840: case (ARGV_OPT_SINGLE):
841: return(argv_opt_single(mdoc, line, v, pos, buf));
1.1 kristaps 842: default:
1.36 kristaps 843: /* ARGV_NONE */
1.6 kristaps 844: break;
1.1 kristaps 845: }
846:
847: return(1);
848: }
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