Annotation of mandoc/argv.c, Revision 1.43
1.43 ! kristaps 1: /* $Id: argv.c,v 1.42 2009/03/08 20:50:12 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 */
1.42 kristaps 210: 0, /* Ap */
1.43 ! kristaps 211: 0, /* Lp */
1.22 kristaps 212: };
213:
1.1 kristaps 214:
1.39 kristaps 215: /*
216: * Parse an argument from line text. This comes in the form of -key
217: * [value0...], which may either have a single mandatory value, at least
218: * one mandatory value, an optional single value, or no value.
219: */
220: int
221: mdoc_argv(struct mdoc *mdoc, int line, int tok,
222: struct mdoc_arg **v, int *pos, char *buf)
223: {
224: int i;
225: char *p;
226: struct mdoc_argv tmp;
227: struct mdoc_arg *arg;
228:
229: if (0 == buf[*pos])
230: return(ARGV_EOLN);
231:
232: assert( ! isspace((u_char)buf[*pos]));
233:
234: if ('-' != buf[*pos])
235: return(ARGV_WORD);
236:
237: i = *pos;
238: p = &buf[++(*pos)];
239:
240: assert(*pos > 0);
241:
242: /* LINTED */
243: while (buf[*pos]) {
244: if (isspace((u_char)buf[*pos]))
245: if ('\\' != buf[*pos - 1])
246: break;
247: (*pos)++;
248: }
249:
250: if (buf[*pos])
251: buf[(*pos)++] = 0;
252:
253: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
254: tmp.line = line;
255: tmp.pos = *pos;
256:
257: /*
258: * We now parse out the per-macro arguments. XXX - this can be
259: * made much cleaner using per-argument tables. See argv_a2arg
260: * for details.
261: */
262:
263: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
264: if ( ! pwarn(mdoc, line, i, WARGVPARM))
265: return(ARGV_ERROR);
266: return(ARGV_WORD);
267: }
268:
269: while (buf[*pos] && isspace((u_char)buf[*pos]))
270: (*pos)++;
271:
272: /* FIXME: whitespace if no value. */
273:
274: if ( ! argv(mdoc, tok, line, &tmp, pos, buf))
275: return(ARGV_ERROR);
276:
277: if (NULL == (arg = *v)) {
1.40 kristaps 278: *v = xcalloc(1, sizeof(struct mdoc_arg));
1.39 kristaps 279: arg = *v;
1.40 kristaps 280: }
1.39 kristaps 281:
282: arg->argc++;
283: arg->argv = xrealloc(arg->argv, arg->argc *
1.40 kristaps 284: sizeof(struct mdoc_argv));
1.39 kristaps 285:
286: (void)memcpy(&arg->argv[(int)arg->argc - 1],
287: &tmp, sizeof(struct mdoc_argv));
288:
289: return(ARGV_ARG);
290: }
291:
292:
293: void
294: mdoc_argv_free(struct mdoc_arg *p)
295: {
296: int i, j;
297:
1.41 kristaps 298: if (NULL == p)
299: return;
300:
1.40 kristaps 301: if (p->refcnt) {
302: --(p->refcnt);
303: if (p->refcnt)
304: return;
305: }
306:
307: assert(p->argc);
1.39 kristaps 308:
309: /* LINTED */
310: for (i = 0; i < (int)p->argc; i++) {
311: if (0 == p->argv[i].sz)
312: continue;
313: /* LINTED */
314: for (j = 0; j < (int)p->argv[i].sz; j++)
315: free(p->argv[i].value[j]);
1.40 kristaps 316:
1.39 kristaps 317: free(p->argv[i].value);
318: }
319:
1.40 kristaps 320: free(p->argv);
1.39 kristaps 321: free(p);
322: }
323:
324:
325:
1.24 kristaps 326: static int
1.39 kristaps 327: perr(struct mdoc *mdoc, int line, int pos, enum merr code)
1.25 kristaps 328: {
1.39 kristaps 329: char *p;
330:
331: p = NULL;
1.25 kristaps 332:
333: switch (code) {
334: case (EQUOTTERM):
1.39 kristaps 335: p = "unterminated quoted parameter";
1.25 kristaps 336: break;
337: case (EARGVAL):
1.39 kristaps 338: p = "argument requires a value";
1.25 kristaps 339: break;
340: }
1.39 kristaps 341:
342: assert(p);
343: return(mdoc_perr(mdoc, line, pos, p));
1.25 kristaps 344: }
345:
346:
347: static int
1.39 kristaps 348: pwarn(struct mdoc *mdoc, int line, int pos, enum mwarn code)
1.24 kristaps 349: {
1.39 kristaps 350: char *p;
1.24 kristaps 351: int c;
352:
1.39 kristaps 353: p = NULL;
354: c = WARN_SYNTAX;
355:
1.24 kristaps 356: switch (code) {
357: case (WQUOTPARM):
1.39 kristaps 358: p = "unexpected quoted parameter";
1.24 kristaps 359: break;
360: case (WARGVPARM):
1.39 kristaps 361: p = "argument-like parameter";
1.24 kristaps 362: break;
1.25 kristaps 363: case (WCOLEMPTY):
1.39 kristaps 364: p = "last list column is empty";
365: c = WARN_COMPAT;
1.25 kristaps 366: break;
367: case (WTAILWS):
1.39 kristaps 368: p = "trailing whitespace";
369: c = WARN_COMPAT;
1.25 kristaps 370: break;
1.24 kristaps 371: }
1.39 kristaps 372:
373: assert(p);
374: return(mdoc_pwarn(mdoc, line, pos, c, p));
1.24 kristaps 375: }
376:
377:
1.2 kristaps 378: int
1.22 kristaps 379: mdoc_args(struct mdoc *mdoc, int line,
380: int *pos, char *buf, int tok, char **v)
1.1 kristaps 381: {
1.26 kristaps 382: int fl, c, i;
1.22 kristaps 383: struct mdoc_node *n;
384:
1.24 kristaps 385: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
386:
387: /*
1.36 kristaps 388: * Override per-macro argument flags with context-specific ones.
389: * As of now, this is only valid for `It' depending on its list
390: * context.
1.24 kristaps 391: */
392:
1.36 kristaps 393: switch (tok) {
394: case (MDOC_It):
1.24 kristaps 395: for (n = mdoc->last; n; n = n->parent)
1.36 kristaps 396: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
397: break;
398:
1.24 kristaps 399: assert(n);
1.39 kristaps 400: c = (int)(n->args ? n->args->argc : 0);
1.24 kristaps 401: assert(c > 0);
1.26 kristaps 402:
1.36 kristaps 403: /*
404: * Using `Bl -column' adds ARGS_TABSEP to the arguments
405: * and invalidates ARGS_DELIM. Using `Bl -diag' allows
406: * for quoted arguments.
407: */
408:
1.26 kristaps 409: /* LINTED */
1.24 kristaps 410: for (i = 0; i < c; i++) {
1.39 kristaps 411: switch (n->args->argv[i].arg) {
1.35 kristaps 412: case (MDOC_Column):
413: fl |= ARGS_TABSEP;
414: fl &= ~ARGS_DELIM;
415: i = c;
416: break;
417: case (MDOC_Diag):
418: fl |= ARGS_QUOTED;
419: i = c;
420: break;
421: default:
422: break;
423: }
1.24 kristaps 424: }
1.39 kristaps 425: break;
1.36 kristaps 426: default:
427: break;
1.24 kristaps 428: }
429:
1.36 kristaps 430: /* Continue parsing the arguments themselves... */
431:
1.26 kristaps 432: return(args(mdoc, line, pos, buf, fl, v));
433: }
434:
435:
436: static int
437: args(struct mdoc *mdoc, int line,
438: int *pos, char *buf, int fl, char **v)
439: {
1.31 kristaps 440: int i;
1.26 kristaps 441: char *p, *pp;
442:
443: assert(*pos > 0);
444:
445: if (0 == buf[*pos])
446: return(ARGS_EOLN);
447:
448: if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
449: if ( ! pwarn(mdoc, line, *pos, WQUOTPARM))
450: return(ARGS_ERROR);
451:
1.38 kristaps 452: if ( ! (fl & ARGS_ARGVLIKE) && '-' == buf[*pos])
1.26 kristaps 453: if ( ! pwarn(mdoc, line, *pos, WARGVPARM))
454: return(ARGS_ERROR);
455:
1.24 kristaps 456: /*
457: * If the first character is a delimiter and we're to look for
458: * delimited strings, then pass down the buffer seeing if it
459: * follows the pattern of [[::delim::][ ]+]+.
460: */
461:
1.2 kristaps 462: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
1.31 kristaps 463: for (i = *pos; buf[i]; ) {
464: if ( ! mdoc_iscdelim(buf[i]))
1.2 kristaps 465: break;
466: i++;
1.34 kristaps 467: /* There must be at least one space... */
1.37 kristaps 468: if (0 == buf[i] || ! isspace((u_char)buf[i]))
1.34 kristaps 469: break;
470: i++;
1.37 kristaps 471: while (buf[i] && isspace((u_char)buf[i]))
1.2 kristaps 472: i++;
473: }
474: if (0 == buf[i]) {
475: *v = &buf[*pos];
476: return(ARGS_PUNCT);
477: }
478: }
479:
1.24 kristaps 480: /* First parse non-quoted strings. */
1.1 kristaps 481:
1.17 kristaps 482: if ('\"' != buf[*pos] || ! (ARGS_QUOTED & fl)) {
1.1 kristaps 483: *v = &buf[*pos];
484:
1.24 kristaps 485: /*
486: * Thar be dragons here! If we're tab-separated, search
487: * ahead for either a tab or the `Ta' macro. If a tab
488: * is detected, it mustn't be escaped; if a `Ta' is
489: * detected, it must be space-buffered before and after.
490: * If either of these hold true, then prune out the
491: * extra spaces and call it an argument.
492: */
493:
494: if (ARGS_TABSEP & fl) {
495: /* Scan ahead to unescaped tab. */
1.12 kristaps 496:
1.24 kristaps 497: for (p = *v; ; p++) {
498: if (NULL == (p = strchr(p, '\t')))
499: break;
500: if (p == *v)
501: break;
502: if ('\\' != *(p - 1))
1.12 kristaps 503: break;
504: }
1.24 kristaps 505:
506: /* Scan ahead to unescaped `Ta'. */
507:
508: for (pp = *v; ; pp++) {
509: if (NULL == (pp = strstr(pp, "Ta")))
510: break;
511: if (pp > *v && ' ' != *(pp - 1))
512: continue;
513: if (' ' == *(pp + 2) || 0 == *(pp + 2))
514: break;
515: }
516:
517: /* Choose delimiter tab/Ta. */
518:
519: if (p && pp)
520: p = (p < pp ? p : pp);
521: else if ( ! p && pp)
522: p = pp;
523:
524: /* Strip delimiter's preceding whitespace. */
525:
526: if (p && p > *v) {
527: pp = p - 1;
528: while (pp > *v && ' ' == *pp)
529: pp--;
530: if (pp == *v && ' ' == *pp)
531: *pp = 0;
532: else if (' ' == *pp)
533: *(pp + 1) = 0;
534: }
535:
536: /* ...in- and proceding whitespace. */
537:
538: if (p && ('\t' != *p)) {
539: *p++ = 0;
540: *p++ = 0;
541: } else if (p)
542: *p++ = 0;
543:
544: if (p) {
545: while (' ' == *p)
546: p++;
547: if (0 != *p)
548: *(p - 1) = 0;
1.33 kristaps 549: *pos += (int)(p - *v);
1.24 kristaps 550: }
551:
1.25 kristaps 552: if (p && 0 == *p)
553: if ( ! pwarn(mdoc, line, *pos, WCOLEMPTY))
554: return(0);
555: if (p && 0 == *p && p > *v && ' ' == *(p - 1))
556: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
557: return(0);
558:
1.26 kristaps 559: if (p)
560: return(ARGS_WORD);
561:
1.24 kristaps 562: /* Configure the eoln case, too. */
563:
1.26 kristaps 564: p = strchr(*v, 0);
565: assert(p);
566:
567: if (p > *v && ' ' == *(p - 1))
568: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
569: return(0);
1.33 kristaps 570: *pos += (int)(p - *v);
1.24 kristaps 571:
572: return(ARGS_WORD);
573: }
574:
575: /* Do non-tabsep look-ahead here. */
576:
577: if ( ! (ARGS_TABSEP & fl))
1.31 kristaps 578: while (buf[*pos]) {
1.37 kristaps 579: if (isspace((u_char)buf[*pos]))
1.17 kristaps 580: if ('\\' != buf[*pos - 1])
581: break;
1.12 kristaps 582: (*pos)++;
1.17 kristaps 583: }
1.1 kristaps 584:
585: if (0 == buf[*pos])
1.2 kristaps 586: return(ARGS_WORD);
1.1 kristaps 587:
588: buf[(*pos)++] = 0;
1.12 kristaps 589:
1.1 kristaps 590: if (0 == buf[*pos])
1.2 kristaps 591: return(ARGS_WORD);
1.1 kristaps 592:
1.12 kristaps 593: if ( ! (ARGS_TABSEP & fl))
1.37 kristaps 594: while (buf[*pos] && isspace((u_char)buf[*pos]))
1.12 kristaps 595: (*pos)++;
1.1 kristaps 596:
597: if (buf[*pos])
1.2 kristaps 598: return(ARGS_WORD);
1.1 kristaps 599:
1.25 kristaps 600: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
1.2 kristaps 601: return(ARGS_ERROR);
1.1 kristaps 602:
1.2 kristaps 603: return(ARGS_WORD);
604: }
605:
606: /*
607: * If we're a quoted string (and quoted strings are allowed),
608: * then parse ahead to the next quote. If none's found, it's an
1.4 kristaps 609: * error. After, parse to the next word.
1.2 kristaps 610: */
1.1 kristaps 611:
612: *v = &buf[++(*pos)];
613:
614: while (buf[*pos] && '\"' != buf[*pos])
615: (*pos)++;
616:
617: if (0 == buf[*pos]) {
1.25 kristaps 618: (void)perr(mdoc, line, *pos, EQUOTTERM);
1.2 kristaps 619: return(ARGS_ERROR);
1.1 kristaps 620: }
621:
622: buf[(*pos)++] = 0;
623: if (0 == buf[*pos])
1.19 kristaps 624: return(ARGS_QWORD);
1.1 kristaps 625:
1.37 kristaps 626: while (buf[*pos] && isspace((u_char)buf[*pos]))
1.1 kristaps 627: (*pos)++;
628:
629: if (buf[*pos])
1.19 kristaps 630: return(ARGS_QWORD);
1.1 kristaps 631:
1.25 kristaps 632: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
1.2 kristaps 633: return(ARGS_ERROR);
634:
1.19 kristaps 635: return(ARGS_QWORD);
1.1 kristaps 636: }
637:
638:
1.2 kristaps 639: static int
1.30 kristaps 640: argv_a2arg(int tok, const char *argv)
1.1 kristaps 641: {
642:
1.36 kristaps 643: /*
644: * Parse an argument identifier from its text. XXX - this
645: * should really be table-driven to clarify the code.
646: *
647: * If you add an argument to the list, make sure that you
648: * register it here with its one or more macros!
649: */
650:
1.1 kristaps 651: switch (tok) {
1.6 kristaps 652: case (MDOC_An):
653: if (xstrcmp(argv, "split"))
654: return(MDOC_Split);
655: else if (xstrcmp(argv, "nosplit"))
656: return(MDOC_Nosplit);
657: break;
658:
1.2 kristaps 659: case (MDOC_Bd):
1.1 kristaps 660: if (xstrcmp(argv, "ragged"))
661: return(MDOC_Ragged);
662: else if (xstrcmp(argv, "unfilled"))
663: return(MDOC_Unfilled);
1.13 kristaps 664: else if (xstrcmp(argv, "filled"))
665: return(MDOC_Filled);
1.1 kristaps 666: else if (xstrcmp(argv, "literal"))
667: return(MDOC_Literal);
668: else if (xstrcmp(argv, "file"))
669: return(MDOC_File);
670: else if (xstrcmp(argv, "offset"))
671: return(MDOC_Offset);
1.2 kristaps 672: break;
673:
1.8 kristaps 674: case (MDOC_Bf):
675: if (xstrcmp(argv, "emphasis"))
676: return(MDOC_Emphasis);
677: else if (xstrcmp(argv, "literal"))
678: return(MDOC_Literal);
679: else if (xstrcmp(argv, "symbolic"))
680: return(MDOC_Symbolic);
681: break;
682:
1.7 kristaps 683: case (MDOC_Bk):
684: if (xstrcmp(argv, "words"))
685: return(MDOC_Words);
686: break;
687:
1.2 kristaps 688: case (MDOC_Bl):
689: if (xstrcmp(argv, "bullet"))
1.1 kristaps 690: return(MDOC_Bullet);
691: else if (xstrcmp(argv, "dash"))
692: return(MDOC_Dash);
693: else if (xstrcmp(argv, "hyphen"))
694: return(MDOC_Hyphen);
695: else if (xstrcmp(argv, "item"))
696: return(MDOC_Item);
697: else if (xstrcmp(argv, "enum"))
698: return(MDOC_Enum);
699: else if (xstrcmp(argv, "tag"))
700: return(MDOC_Tag);
701: else if (xstrcmp(argv, "diag"))
702: return(MDOC_Diag);
703: else if (xstrcmp(argv, "hang"))
704: return(MDOC_Hang);
705: else if (xstrcmp(argv, "ohang"))
706: return(MDOC_Ohang);
707: else if (xstrcmp(argv, "inset"))
708: return(MDOC_Inset);
709: else if (xstrcmp(argv, "column"))
710: return(MDOC_Column);
711: else if (xstrcmp(argv, "width"))
712: return(MDOC_Width);
1.2 kristaps 713: else if (xstrcmp(argv, "offset"))
714: return(MDOC_Offset);
1.1 kristaps 715: else if (xstrcmp(argv, "compact"))
716: return(MDOC_Compact);
1.2 kristaps 717: break;
1.3 kristaps 718:
719: case (MDOC_Rv):
720: /* FALLTHROUGH */
721: case (MDOC_Ex):
722: if (xstrcmp(argv, "std"))
723: return(MDOC_Std);
724: break;
1.1 kristaps 725: default:
1.8 kristaps 726: break;
1.1 kristaps 727: }
728:
729: return(MDOC_ARG_MAX);
730: }
731:
732:
1.2 kristaps 733: static int
1.26 kristaps 734: argv_multi(struct mdoc *mdoc, int line,
1.39 kristaps 735: struct mdoc_argv *v, int *pos, char *buf)
1.12 kristaps 736: {
737: int c, ppos;
738: char *p;
739:
740: ppos = *pos;
741:
1.39 kristaps 742: for (v->sz = 0; ; v->sz++) {
1.12 kristaps 743: if ('-' == buf[*pos])
744: break;
1.26 kristaps 745: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
1.39 kristaps 746: if (ARGS_ERROR == c)
1.12 kristaps 747: return(0);
1.39 kristaps 748: else if (ARGS_EOLN == c)
1.12 kristaps 749: break;
1.39 kristaps 750:
751: if (0 == v->sz % 5)
752: v->value = xrealloc(v->value,
753: (v->sz + 5) * sizeof(char *));
754:
1.40 kristaps 755: v->value[(int)v->sz] = xstrdup(p);
1.12 kristaps 756: }
757:
1.39 kristaps 758: if (v->sz)
1.12 kristaps 759: return(1);
760:
1.39 kristaps 761: return(perr(mdoc, line, ppos, EARGVAL));
1.12 kristaps 762: }
763:
764:
765: static int
1.36 kristaps 766: argv_opt_single(struct mdoc *mdoc, int line,
1.39 kristaps 767: struct mdoc_argv *v, int *pos, char *buf)
1.36 kristaps 768: {
1.39 kristaps 769: int c;
1.36 kristaps 770: char *p;
771:
772: if ('-' == buf[*pos])
773: return(1);
774:
775: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
776: if (ARGS_ERROR == c)
777: return(0);
778: if (ARGS_EOLN == c)
779: return(1);
780:
781: v->sz = 1;
782: v->value = xcalloc(1, sizeof(char *));
1.40 kristaps 783: v->value[0] = xstrdup(p);
1.36 kristaps 784: return(1);
785: }
786:
787:
788: /*
789: * Parse a single, mandatory value from the stream.
790: */
791: static int
1.26 kristaps 792: argv_single(struct mdoc *mdoc, int line,
1.39 kristaps 793: struct mdoc_argv *v, int *pos, char *buf)
1.1 kristaps 794: {
1.12 kristaps 795: int c, ppos;
1.1 kristaps 796: char *p;
797:
798: ppos = *pos;
799:
1.26 kristaps 800: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
1.12 kristaps 801: if (ARGS_ERROR == c)
802: return(0);
803: if (ARGS_EOLN == c)
1.36 kristaps 804: return(perr(mdoc, line, ppos, EARGVAL));
1.12 kristaps 805:
806: v->sz = 1;
807: v->value = xcalloc(1, sizeof(char *));
1.40 kristaps 808: v->value[0] = xstrdup(p);
1.12 kristaps 809: return(1);
810: }
811:
812:
1.36 kristaps 813: /*
814: * Determine rules for parsing arguments. Arguments can either accept
815: * no parameters, an optional single parameter, one parameter, or
816: * multiple parameters.
817: */
1.12 kristaps 818: static int
1.37 kristaps 819: argv(struct mdoc *mdoc, int tok, int line,
1.39 kristaps 820: struct mdoc_argv *v, int *pos, char *buf)
1.12 kristaps 821: {
1.37 kristaps 822: int fl;
1.12 kristaps 823:
824: v->sz = 0;
825: v->value = NULL;
1.37 kristaps 826: fl = mdoc_argvflags[v->arg];
1.12 kristaps 827:
1.37 kristaps 828: /*
829: * Override the default per-argument value.
830: */
831:
832: switch (tok) {
833: case (MDOC_Ex):
834: fl = ARGV_OPT_SINGLE;
835: break;
836: default:
837: break;
838: }
839:
840: switch (fl) {
1.36 kristaps 841: case (ARGV_SINGLE):
1.26 kristaps 842: return(argv_single(mdoc, line, v, pos, buf));
1.36 kristaps 843: case (ARGV_MULTI):
1.26 kristaps 844: return(argv_multi(mdoc, line, v, pos, buf));
1.36 kristaps 845: case (ARGV_OPT_SINGLE):
846: return(argv_opt_single(mdoc, line, v, pos, buf));
1.1 kristaps 847: default:
1.36 kristaps 848: /* ARGV_NONE */
1.6 kristaps 849: break;
1.1 kristaps 850: }
851:
852: return(1);
853: }
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