Annotation of mandoc/argv.c, Revision 1.25
1.25 ! kristaps 1: /* $Id: argv.c,v 1.24 2009/01/21 17:56:32 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: /*
29: * Parse arguments and parameters of macros. Arguments follow the
30: * syntax of `-arg [val [valN...]]', while parameters are free-form text
31: * following arguments (if any). This file must correctly handle the
32: * strange punctuation rules dictated by groff.
33: */
34:
1.24 kristaps 35: #define ARGS_QUOTED (1 << 0)
36: #define ARGS_DELIM (1 << 1)
37: #define ARGS_TABSEP (1 << 2)
1.15 kristaps 38:
1.2 kristaps 39: static int lookup(int, const char *);
1.16 kristaps 40: static int parse(struct mdoc *, int,
1.2 kristaps 41: struct mdoc_arg *, int *, char *);
1.12 kristaps 42: static int parse_single(struct mdoc *, int,
43: struct mdoc_arg *, int *, char *);
44: static int parse_multi(struct mdoc *, int,
45: struct mdoc_arg *, int *, char *);
1.2 kristaps 46: static int postparse(struct mdoc *, int,
47: const struct mdoc_arg *, int);
1.24 kristaps 48: static int pwarn(struct mdoc *, int, int, int);
1.25 ! kristaps 49: static int perr(struct mdoc *, int, int, int);
1.1 kristaps 50:
1.24 kristaps 51: #define WQUOTPARM (0)
52: #define WARGVPARM (1)
1.25 ! kristaps 53: #define WCOLEMPTY (2)
! 54: #define WTAILWS (3)
! 55:
! 56: #define EQUOTTERM (0)
! 57: #define EOFFSET (1)
! 58: #define EARGVAL (2)
! 59: #define EARGMANY (3)
1.22 kristaps 60:
61: static int mdoc_argflags[MDOC_MAX] = {
62: 0, /* \" */
63: 0, /* Dd */
64: 0, /* Dt */
65: 0, /* Os */
66: 0, /* Sh */
67: 0, /* Ss */
68: ARGS_DELIM, /* Pp */
69: ARGS_DELIM, /* D1 */
70: ARGS_DELIM, /* Dl */
71: 0, /* Bd */
72: 0, /* Ed */
73: 0, /* Bl */
74: 0, /* El */
75: ARGS_DELIM, /* It */
76: ARGS_DELIM, /* Ad */
77: ARGS_DELIM, /* An */
78: ARGS_DELIM, /* Ar */
79: ARGS_QUOTED, /* Cd */
80: ARGS_DELIM, /* Cm */
81: ARGS_DELIM, /* Dv */
82: ARGS_DELIM, /* Er */
83: ARGS_DELIM, /* Ev */
84: 0, /* Ex */
85: ARGS_DELIM | ARGS_QUOTED, /* Fa */
86: 0, /* Fd */
87: ARGS_DELIM, /* Fl */
88: ARGS_DELIM | ARGS_QUOTED, /* Fn */
89: ARGS_DELIM | ARGS_QUOTED, /* Ft */
90: ARGS_DELIM, /* Ic */
91: 0, /* In */
92: ARGS_DELIM, /* Li */
93: 0, /* Nd */
94: ARGS_DELIM, /* Nm */
95: ARGS_DELIM, /* Op */
96: 0, /* Ot */
97: ARGS_DELIM, /* Pa */
98: 0, /* Rv */
99: ARGS_DELIM, /* St */
100: ARGS_DELIM, /* Va */
101: ARGS_DELIM, /* Vt */
102: ARGS_DELIM, /* Xr */
103: ARGS_QUOTED, /* %A */
104: ARGS_QUOTED, /* %B */
105: ARGS_QUOTED, /* %D */
106: ARGS_QUOTED, /* %I */
107: ARGS_QUOTED, /* %J */
108: ARGS_QUOTED, /* %N */
109: ARGS_QUOTED, /* %O */
110: ARGS_QUOTED, /* %P */
111: ARGS_QUOTED, /* %R */
112: ARGS_QUOTED, /* %T */
113: ARGS_QUOTED, /* %V */
114: ARGS_DELIM, /* Ac */
115: 0, /* Ao */
116: ARGS_DELIM, /* Aq */
117: ARGS_DELIM, /* At */
118: ARGS_DELIM, /* Bc */
119: 0, /* Bf */
120: 0, /* Bo */
121: ARGS_DELIM, /* Bq */
122: ARGS_DELIM, /* Bsx */
123: ARGS_DELIM, /* Bx */
124: 0, /* Db */
125: ARGS_DELIM, /* Dc */
126: 0, /* Do */
127: ARGS_DELIM, /* Dq */
128: ARGS_DELIM, /* Ec */
129: 0, /* Ef */
130: ARGS_DELIM, /* Em */
131: 0, /* Eo */
132: ARGS_DELIM, /* Fx */
133: ARGS_DELIM, /* Ms */
134: ARGS_DELIM, /* No */
135: ARGS_DELIM, /* Ns */
136: ARGS_DELIM, /* Nx */
137: ARGS_DELIM, /* Ox */
138: ARGS_DELIM, /* Pc */
139: ARGS_DELIM, /* Pf */
140: 0, /* Po */
141: ARGS_DELIM, /* Pq */
142: ARGS_DELIM, /* Qc */
143: ARGS_DELIM, /* Ql */
144: 0, /* Qo */
145: ARGS_DELIM, /* Qq */
146: 0, /* Re */
147: 0, /* Rs */
148: ARGS_DELIM, /* Sc */
149: 0, /* So */
150: ARGS_DELIM, /* Sq */
151: 0, /* Sm */
152: ARGS_DELIM, /* Sx */
153: ARGS_DELIM, /* Sy */
154: ARGS_DELIM, /* Tn */
155: ARGS_DELIM, /* Ux */
156: ARGS_DELIM, /* Xc */
157: 0, /* Xo */
158: 0, /* Fo */
159: 0, /* Fc */
160: 0, /* Oo */
161: ARGS_DELIM, /* Oc */
162: 0, /* Bk */
163: 0, /* Ek */
164: 0, /* Bt */
165: 0, /* Hf */
166: 0, /* Fr */
167: 0, /* Ud */
168: };
169:
1.1 kristaps 170:
1.24 kristaps 171: static int
1.25 ! kristaps 172: perr(struct mdoc *mdoc, int line, int pos, int code)
! 173: {
! 174: int c;
! 175:
! 176: switch (code) {
! 177: case (EQUOTTERM):
! 178: c = mdoc_perr(mdoc, line, pos,
! 179: "unterminated quoted parameter");
! 180: break;
! 181: case (EOFFSET):
! 182: c = mdoc_perr(mdoc, line, pos,
! 183: "invalid value for offset argument");
! 184: break;
! 185: case (EARGVAL):
! 186: c = mdoc_perr(mdoc, line, pos,
! 187: "argument requires a value");
! 188: break;
! 189: case (EARGMANY):
! 190: c = mdoc_perr(mdoc, line, pos,
! 191: "too many values for argument");
! 192: break;
! 193: default:
! 194: abort();
! 195: /* NOTREACHED */
! 196: }
! 197: return(c);
! 198: }
! 199:
! 200:
! 201: static int
1.24 kristaps 202: pwarn(struct mdoc *mdoc, int line, int pos, int code)
203: {
204: int c;
205:
206: switch (code) {
207: case (WQUOTPARM):
208: c = mdoc_pwarn(mdoc, line, pos, WARN_SYNTAX,
209: "unexpected quoted parameter");
210: break;
211: case (WARGVPARM):
212: c = mdoc_pwarn(mdoc, line, pos, WARN_SYNTAX,
213: "argument-like parameter");
214: break;
1.25 ! kristaps 215: case (WCOLEMPTY):
! 216: c = mdoc_pwarn(mdoc, line, pos, WARN_SYNTAX,
! 217: "last list column is empty");
! 218: break;
! 219: case (WTAILWS):
! 220: c = mdoc_pwarn(mdoc, line, pos, WARN_COMPAT,
! 221: "trailing whitespace");
! 222: break;
1.24 kristaps 223: default:
224: abort();
225: /* NOTREACHED */
226: }
227: return(c);
228: }
229:
230:
1.2 kristaps 231: int
1.22 kristaps 232: mdoc_args(struct mdoc *mdoc, int line,
233: int *pos, char *buf, int tok, char **v)
1.1 kristaps 234: {
1.24 kristaps 235: int i, c, fl;
236: char *p, *pp;
1.22 kristaps 237: struct mdoc_node *n;
238:
1.24 kristaps 239: assert(*pos > 0);
1.1 kristaps 240:
241: if (0 == buf[*pos])
1.2 kristaps 242: return(ARGS_EOLN);
243:
1.24 kristaps 244: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
245:
1.2 kristaps 246: if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
1.24 kristaps 247: if ( ! pwarn(mdoc, line, *pos, WQUOTPARM))
1.2 kristaps 248: return(ARGS_ERROR);
249:
250: if ('-' == buf[*pos])
1.24 kristaps 251: if ( ! pwarn(mdoc, line, *pos, WARGVPARM))
1.2 kristaps 252: return(ARGS_ERROR);
253:
1.24 kristaps 254: /*
255: * First see if we should use TABSEP (Bl -column). This
256: * invalidates the use of ARGS_DELIM.
257: */
258:
259: if (MDOC_It == tok) {
260: for (n = mdoc->last; n; n = n->parent)
261: if (MDOC_BLOCK == n->type)
262: if (MDOC_Bl == n->tok)
263: break;
264: assert(n);
265: c = (int)n->data.block.argc;
266: assert(c > 0);
267: for (i = 0; i < c; i++) {
268: if (MDOC_Column != n->data.block.argv[i].arg)
269: continue;
270: fl |= ARGS_TABSEP;
271: fl &= ~ARGS_DELIM;
272: }
273: }
274:
275: /*
276: * If the first character is a delimiter and we're to look for
277: * delimited strings, then pass down the buffer seeing if it
278: * follows the pattern of [[::delim::][ ]+]+.
279: */
280:
1.2 kristaps 281: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
1.24 kristaps 282: for (i = *pos; (c = buf[i]); ) {
283: if ( ! mdoc_iscdelim(c))
1.2 kristaps 284: break;
285: i++;
1.24 kristaps 286: if (0 == buf[i] || ! isspace(c))
1.2 kristaps 287: break;
288: i++;
1.24 kristaps 289: while (buf[i] && isspace(c))
1.2 kristaps 290: i++;
291: }
292: if (0 == buf[i]) {
293: *v = &buf[*pos];
294: return(ARGS_PUNCT);
295: }
296: }
297:
1.24 kristaps 298: /* First parse non-quoted strings. */
1.1 kristaps 299:
1.17 kristaps 300: if ('\"' != buf[*pos] || ! (ARGS_QUOTED & fl)) {
1.1 kristaps 301: *v = &buf[*pos];
302:
1.24 kristaps 303: /*
304: * Thar be dragons here! If we're tab-separated, search
305: * ahead for either a tab or the `Ta' macro. If a tab
306: * is detected, it mustn't be escaped; if a `Ta' is
307: * detected, it must be space-buffered before and after.
308: * If either of these hold true, then prune out the
309: * extra spaces and call it an argument.
310: */
311:
312: if (ARGS_TABSEP & fl) {
313: /* Scan ahead to unescaped tab. */
1.12 kristaps 314:
1.24 kristaps 315: for (p = *v; ; p++) {
316: if (NULL == (p = strchr(p, '\t')))
317: break;
318: if (p == *v)
319: break;
320: if ('\\' != *(p - 1))
1.12 kristaps 321: break;
322: }
1.24 kristaps 323:
324: /* Scan ahead to unescaped `Ta'. */
325:
326: for (pp = *v; ; pp++) {
327: if (NULL == (pp = strstr(pp, "Ta")))
328: break;
329: if (pp > *v && ' ' != *(pp - 1))
330: continue;
331: if (' ' == *(pp + 2) || 0 == *(pp + 2))
332: break;
333: }
334:
335: /* Choose delimiter tab/Ta. */
336:
337: if (p && pp)
338: p = (p < pp ? p : pp);
339: else if ( ! p && pp)
340: p = pp;
341:
342: /* Strip delimiter's preceding whitespace. */
343:
344: if (p && p > *v) {
345: pp = p - 1;
346: while (pp > *v && ' ' == *pp)
347: pp--;
348: if (pp == *v && ' ' == *pp)
349: *pp = 0;
350: else if (' ' == *pp)
351: *(pp + 1) = 0;
352: }
353:
354: /* ...in- and proceding whitespace. */
355:
356: if (p && ('\t' != *p)) {
357: *p++ = 0;
358: *p++ = 0;
359: } else if (p)
360: *p++ = 0;
361:
362: if (p) {
363: while (' ' == *p)
364: p++;
365: if (0 != *p)
366: *(p - 1) = 0;
367: *pos += p - *v;
368: }
369:
1.25 ! kristaps 370: if (p && 0 == *p)
! 371: if ( ! pwarn(mdoc, line, *pos, WCOLEMPTY))
! 372: return(0);
! 373: if (p && 0 == *p && p > *v && ' ' == *(p - 1))
! 374: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
! 375: return(0);
! 376:
1.24 kristaps 377: /* Configure the eoln case, too. */
378:
379: if (NULL == p) {
380: p = strchr(*v, 0);
381: assert(p);
382:
1.25 ! kristaps 383: if (p > *v && ' ' == *(p - 1))
! 384: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
! 385: return(0);
1.24 kristaps 386: *pos += p - *v;
387: }
388:
389: return(ARGS_WORD);
390: }
391:
392: /* Do non-tabsep look-ahead here. */
393:
394: if ( ! (ARGS_TABSEP & fl))
395: while ((c = buf[*pos])) {
396: if (isspace(c))
1.17 kristaps 397: if ('\\' != buf[*pos - 1])
398: break;
1.12 kristaps 399: (*pos)++;
1.17 kristaps 400: }
1.1 kristaps 401:
402: if (0 == buf[*pos])
1.2 kristaps 403: return(ARGS_WORD);
1.1 kristaps 404:
405: buf[(*pos)++] = 0;
1.12 kristaps 406:
1.1 kristaps 407: if (0 == buf[*pos])
1.2 kristaps 408: return(ARGS_WORD);
1.1 kristaps 409:
1.12 kristaps 410: if ( ! (ARGS_TABSEP & fl))
1.21 kristaps 411: while (buf[*pos] && isspace((int)buf[*pos]))
1.12 kristaps 412: (*pos)++;
1.1 kristaps 413:
414: if (buf[*pos])
1.2 kristaps 415: return(ARGS_WORD);
1.1 kristaps 416:
1.25 ! kristaps 417: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
1.2 kristaps 418: return(ARGS_ERROR);
1.1 kristaps 419:
1.2 kristaps 420: return(ARGS_WORD);
421: }
422:
423: /*
424: * If we're a quoted string (and quoted strings are allowed),
425: * then parse ahead to the next quote. If none's found, it's an
1.4 kristaps 426: * error. After, parse to the next word.
1.2 kristaps 427: */
1.1 kristaps 428:
429: *v = &buf[++(*pos)];
430:
431: while (buf[*pos] && '\"' != buf[*pos])
432: (*pos)++;
433:
434: if (0 == buf[*pos]) {
1.25 ! kristaps 435: (void)perr(mdoc, line, *pos, EQUOTTERM);
1.2 kristaps 436: return(ARGS_ERROR);
1.1 kristaps 437: }
438:
439: buf[(*pos)++] = 0;
440: if (0 == buf[*pos])
1.19 kristaps 441: return(ARGS_QWORD);
1.1 kristaps 442:
1.21 kristaps 443: while (buf[*pos] && isspace((int)buf[*pos]))
1.1 kristaps 444: (*pos)++;
445:
446: if (buf[*pos])
1.19 kristaps 447: return(ARGS_QWORD);
1.1 kristaps 448:
1.25 ! kristaps 449: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
1.2 kristaps 450: return(ARGS_ERROR);
451:
1.19 kristaps 452: return(ARGS_QWORD);
1.1 kristaps 453: }
454:
455:
1.2 kristaps 456: static int
457: lookup(int tok, const char *argv)
1.1 kristaps 458: {
459:
460: switch (tok) {
1.6 kristaps 461: case (MDOC_An):
462: if (xstrcmp(argv, "split"))
463: return(MDOC_Split);
464: else if (xstrcmp(argv, "nosplit"))
465: return(MDOC_Nosplit);
466: break;
467:
1.2 kristaps 468: case (MDOC_Bd):
1.1 kristaps 469: if (xstrcmp(argv, "ragged"))
470: return(MDOC_Ragged);
471: else if (xstrcmp(argv, "unfilled"))
472: return(MDOC_Unfilled);
1.13 kristaps 473: else if (xstrcmp(argv, "filled"))
474: return(MDOC_Filled);
1.1 kristaps 475: else if (xstrcmp(argv, "literal"))
476: return(MDOC_Literal);
477: else if (xstrcmp(argv, "file"))
478: return(MDOC_File);
479: else if (xstrcmp(argv, "offset"))
480: return(MDOC_Offset);
1.2 kristaps 481: break;
482:
1.8 kristaps 483: case (MDOC_Bf):
484: if (xstrcmp(argv, "emphasis"))
485: return(MDOC_Emphasis);
486: else if (xstrcmp(argv, "literal"))
487: return(MDOC_Literal);
488: else if (xstrcmp(argv, "symbolic"))
489: return(MDOC_Symbolic);
490: break;
491:
1.7 kristaps 492: case (MDOC_Bk):
493: if (xstrcmp(argv, "words"))
494: return(MDOC_Words);
495: break;
496:
1.2 kristaps 497: case (MDOC_Bl):
498: if (xstrcmp(argv, "bullet"))
1.1 kristaps 499: return(MDOC_Bullet);
500: else if (xstrcmp(argv, "dash"))
501: return(MDOC_Dash);
502: else if (xstrcmp(argv, "hyphen"))
503: return(MDOC_Hyphen);
504: else if (xstrcmp(argv, "item"))
505: return(MDOC_Item);
506: else if (xstrcmp(argv, "enum"))
507: return(MDOC_Enum);
508: else if (xstrcmp(argv, "tag"))
509: return(MDOC_Tag);
510: else if (xstrcmp(argv, "diag"))
511: return(MDOC_Diag);
512: else if (xstrcmp(argv, "hang"))
513: return(MDOC_Hang);
514: else if (xstrcmp(argv, "ohang"))
515: return(MDOC_Ohang);
516: else if (xstrcmp(argv, "inset"))
517: return(MDOC_Inset);
518: else if (xstrcmp(argv, "column"))
519: return(MDOC_Column);
520: else if (xstrcmp(argv, "width"))
521: return(MDOC_Width);
1.2 kristaps 522: else if (xstrcmp(argv, "offset"))
523: return(MDOC_Offset);
1.1 kristaps 524: else if (xstrcmp(argv, "compact"))
525: return(MDOC_Compact);
1.2 kristaps 526: break;
1.3 kristaps 527:
528: case (MDOC_Rv):
529: /* FALLTHROUGH */
530: case (MDOC_Ex):
531: if (xstrcmp(argv, "std"))
532: return(MDOC_Std);
533: break;
1.5 kristaps 534:
535: case (MDOC_St):
536: if (xstrcmp(argv, "p1003.1-88"))
537: return(MDOC_p1003_1_88);
538: else if (xstrcmp(argv, "p1003.1-90"))
539: return(MDOC_p1003_1_90);
540: else if (xstrcmp(argv, "p1003.1-96"))
541: return(MDOC_p1003_1_96);
542: else if (xstrcmp(argv, "p1003.1-2001"))
543: return(MDOC_p1003_1_2001);
544: else if (xstrcmp(argv, "p1003.1-2004"))
545: return(MDOC_p1003_1_2004);
546: else if (xstrcmp(argv, "p1003.1"))
547: return(MDOC_p1003_1);
548: else if (xstrcmp(argv, "p1003.1b"))
549: return(MDOC_p1003_1b);
550: else if (xstrcmp(argv, "p1003.1b-93"))
551: return(MDOC_p1003_1b_93);
552: else if (xstrcmp(argv, "p1003.1c-95"))
553: return(MDOC_p1003_1c_95);
554: else if (xstrcmp(argv, "p1003.1g-2000"))
555: return(MDOC_p1003_1g_2000);
556: else if (xstrcmp(argv, "p1003.2-92"))
557: return(MDOC_p1003_2_92);
558: else if (xstrcmp(argv, "p1003.2-95"))
559: return(MDOC_p1387_2_95);
560: else if (xstrcmp(argv, "p1003.2"))
561: return(MDOC_p1003_2);
562: else if (xstrcmp(argv, "p1387.2-95"))
563: return(MDOC_p1387_2);
564: else if (xstrcmp(argv, "isoC-90"))
565: return(MDOC_isoC_90);
566: else if (xstrcmp(argv, "isoC-amd1"))
567: return(MDOC_isoC_amd1);
568: else if (xstrcmp(argv, "isoC-tcor1"))
569: return(MDOC_isoC_tcor1);
570: else if (xstrcmp(argv, "isoC-tcor2"))
571: return(MDOC_isoC_tcor2);
572: else if (xstrcmp(argv, "isoC-99"))
573: return(MDOC_isoC_99);
574: else if (xstrcmp(argv, "ansiC"))
575: return(MDOC_ansiC);
576: else if (xstrcmp(argv, "ansiC-89"))
577: return(MDOC_ansiC_89);
578: else if (xstrcmp(argv, "ansiC-99"))
579: return(MDOC_ansiC_99);
580: else if (xstrcmp(argv, "ieee754"))
581: return(MDOC_ieee754);
582: else if (xstrcmp(argv, "iso8802-3"))
583: return(MDOC_iso8802_3);
584: else if (xstrcmp(argv, "xpg3"))
585: return(MDOC_xpg3);
586: else if (xstrcmp(argv, "xpg4"))
587: return(MDOC_xpg4);
588: else if (xstrcmp(argv, "xpg4.2"))
589: return(MDOC_xpg4_2);
590: else if (xstrcmp(argv, "xpg4.3"))
591: return(MDOC_xpg4_3);
592: else if (xstrcmp(argv, "xbd5"))
593: return(MDOC_xbd5);
594: else if (xstrcmp(argv, "xcu5"))
595: return(MDOC_xcu5);
596: else if (xstrcmp(argv, "xsh5"))
597: return(MDOC_xsh5);
598: else if (xstrcmp(argv, "xns5"))
599: return(MDOC_xns5);
600: else if (xstrcmp(argv, "xns5.2d2.0"))
601: return(MDOC_xns5_2d2_0);
602: else if (xstrcmp(argv, "xcurses4.2"))
603: return(MDOC_xcurses4_2);
604: else if (xstrcmp(argv, "susv2"))
605: return(MDOC_susv2);
606: else if (xstrcmp(argv, "susv3"))
607: return(MDOC_susv3);
608: else if (xstrcmp(argv, "svid4"))
609: return(MDOC_svid4);
610: break;
1.1 kristaps 611:
612: default:
1.8 kristaps 613: break;
1.1 kristaps 614: }
615:
616: return(MDOC_ARG_MAX);
617: }
618:
619:
1.2 kristaps 620: static int
1.9 kristaps 621: postparse(struct mdoc *mdoc, int line, const struct mdoc_arg *v, int pos)
1.2 kristaps 622: {
623:
624: switch (v->arg) {
625: case (MDOC_Offset):
626: assert(v->value);
627: assert(v->value[0]);
628: if (xstrcmp(v->value[0], "left"))
629: break;
630: if (xstrcmp(v->value[0], "right"))
631: break;
632: if (xstrcmp(v->value[0], "center"))
633: break;
634: if (xstrcmp(v->value[0], "indent"))
635: break;
636: if (xstrcmp(v->value[0], "indent-two"))
637: break;
1.25 ! kristaps 638: return(perr(mdoc, line, pos, EOFFSET));
1.2 kristaps 639: default:
640: break;
641: }
642:
643: return(1);
644: }
645:
646:
647: static int
1.12 kristaps 648: parse_multi(struct mdoc *mdoc, int line,
649: struct mdoc_arg *v, int *pos, char *buf)
650: {
651: int c, ppos;
652: char *p;
653:
654: v->sz = 0;
655: v->value = xcalloc(MDOC_LINEARG_MAX, sizeof(char *));
656:
657: ppos = *pos;
658:
659: for (v->sz = 0; v->sz < MDOC_LINEARG_MAX; v->sz++) {
660: if ('-' == buf[*pos])
661: break;
662: c = mdoc_args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
663: if (ARGS_ERROR == c) {
664: free(v->value);
665: return(0);
666: } else if (ARGS_EOLN == c)
667: break;
668: v->value[v->sz] = p;
669: }
670:
671: if (0 < v->sz && v->sz < MDOC_LINEARG_MAX)
672: return(1);
673:
674: free(v->value);
1.25 ! kristaps 675: if (0 == v->sz)
! 676: return(perr(mdoc, line, ppos, EARGVAL));
! 677:
! 678: return(perr(mdoc, line, ppos, EARGMANY));
1.12 kristaps 679: }
680:
681:
682: static int
683: parse_single(struct mdoc *mdoc, int line,
1.1 kristaps 684: struct mdoc_arg *v, int *pos, char *buf)
685: {
1.12 kristaps 686: int c, ppos;
1.1 kristaps 687: char *p;
688:
689: ppos = *pos;
690:
1.12 kristaps 691: c = mdoc_args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
692: if (ARGS_ERROR == c)
693: return(0);
694: if (ARGS_EOLN == c)
1.25 ! kristaps 695: return(perr(mdoc, line, ppos, EARGVAL));
1.12 kristaps 696:
697: v->sz = 1;
698: v->value = xcalloc(1, sizeof(char *));
699: v->value[0] = p;
700: return(1);
701: }
702:
703:
704: static int
1.16 kristaps 705: parse(struct mdoc *mdoc, int line,
1.12 kristaps 706: struct mdoc_arg *v, int *pos, char *buf)
707: {
708:
709: v->sz = 0;
710: v->value = NULL;
711:
1.2 kristaps 712: switch (v->arg) {
1.3 kristaps 713: case(MDOC_Std):
714: /* FALLTHROUGH */
1.1 kristaps 715: case(MDOC_Width):
716: /* FALLTHROUGH */
717: case(MDOC_Offset):
1.12 kristaps 718: return(parse_single(mdoc, line, v, pos, buf));
1.1 kristaps 719: case(MDOC_Column):
1.12 kristaps 720: return(parse_multi(mdoc, line, v, pos, buf));
1.1 kristaps 721: default:
1.6 kristaps 722: break;
1.1 kristaps 723: }
724:
725: return(1);
726: }
727:
728:
1.2 kristaps 729: int
1.9 kristaps 730: mdoc_argv(struct mdoc *mdoc, int line, int tok,
1.2 kristaps 731: struct mdoc_arg *v, int *pos, char *buf)
732: {
733: int i, ppos;
734: char *argv;
735:
736: (void)memset(v, 0, sizeof(struct mdoc_arg));
737:
738: if (0 == buf[*pos])
1.5 kristaps 739: return(ARGV_EOLN);
1.2 kristaps 740:
1.21 kristaps 741: assert( ! isspace((int)buf[*pos]));
1.2 kristaps 742:
1.5 kristaps 743: if ('-' != buf[*pos])
744: return(ARGV_WORD);
1.2 kristaps 745:
746: i = *pos;
747: argv = &buf[++(*pos)];
748:
1.11 kristaps 749: v->line = line;
750: v->pos = *pos;
751:
1.17 kristaps 752: assert(*pos > 0);
753: while (buf[*pos]) {
1.21 kristaps 754: if (isspace((int)buf[*pos]))
1.17 kristaps 755: if ('\\' != buf[*pos - 1])
756: break;
1.2 kristaps 757: (*pos)++;
1.17 kristaps 758: }
1.2 kristaps 759:
760: if (buf[*pos])
761: buf[(*pos)++] = 0;
762:
763: if (MDOC_ARG_MAX == (v->arg = lookup(tok, argv))) {
1.25 ! kristaps 764: if ( ! pwarn(mdoc, line, i, WARGVPARM))
1.14 kristaps 765: return(ARGV_ERROR);
1.10 kristaps 766: return(ARGV_WORD);
1.2 kristaps 767: }
768:
1.21 kristaps 769: while (buf[*pos] && isspace((int)buf[*pos]))
1.2 kristaps 770: (*pos)++;
771:
772: /* FIXME: whitespace if no value. */
773:
774: ppos = *pos;
1.16 kristaps 775: if ( ! parse(mdoc, line, v, pos, buf))
1.5 kristaps 776: return(ARGV_ERROR);
1.9 kristaps 777: if ( ! postparse(mdoc, line, v, ppos))
1.5 kristaps 778: return(ARGV_ERROR);
1.2 kristaps 779:
1.5 kristaps 780: return(ARGV_ARG);
1.2 kristaps 781: }
782:
783:
1.1 kristaps 784: void
785: mdoc_argv_free(int sz, struct mdoc_arg *arg)
786: {
787: int i;
788:
789: for (i = 0; i < sz; i++) {
790: if (0 == arg[i].sz) {
791: assert(NULL == arg[i].value);
792: continue;
793: }
794: assert(arg[i].value);
795: free(arg[i].value);
796: }
797: }
1.2 kristaps 798:
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