Annotation of mandoc/argv.c, Revision 1.42
1.42 ! kristaps 1: /* $Id: argv.c,v 1.41 2009/03/08 12:46:38 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 */
1.22 kristaps 211: };
212:
1.1 kristaps 213:
1.39 kristaps 214: /*
215: * Parse an argument from line text. This comes in the form of -key
216: * [value0...], which may either have a single mandatory value, at least
217: * one mandatory value, an optional single value, or no value.
218: */
219: int
220: mdoc_argv(struct mdoc *mdoc, int line, int tok,
221: struct mdoc_arg **v, int *pos, char *buf)
222: {
223: int i;
224: char *p;
225: struct mdoc_argv tmp;
226: struct mdoc_arg *arg;
227:
228: if (0 == buf[*pos])
229: return(ARGV_EOLN);
230:
231: assert( ! isspace((u_char)buf[*pos]));
232:
233: if ('-' != buf[*pos])
234: return(ARGV_WORD);
235:
236: i = *pos;
237: p = &buf[++(*pos)];
238:
239: assert(*pos > 0);
240:
241: /* LINTED */
242: while (buf[*pos]) {
243: if (isspace((u_char)buf[*pos]))
244: if ('\\' != buf[*pos - 1])
245: break;
246: (*pos)++;
247: }
248:
249: if (buf[*pos])
250: buf[(*pos)++] = 0;
251:
252: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
253: tmp.line = line;
254: tmp.pos = *pos;
255:
256: /*
257: * We now parse out the per-macro arguments. XXX - this can be
258: * made much cleaner using per-argument tables. See argv_a2arg
259: * for details.
260: */
261:
262: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
263: if ( ! pwarn(mdoc, line, i, WARGVPARM))
264: return(ARGV_ERROR);
265: return(ARGV_WORD);
266: }
267:
268: while (buf[*pos] && isspace((u_char)buf[*pos]))
269: (*pos)++;
270:
271: /* FIXME: whitespace if no value. */
272:
273: if ( ! argv(mdoc, tok, line, &tmp, pos, buf))
274: return(ARGV_ERROR);
275:
276: if (NULL == (arg = *v)) {
1.40 kristaps 277: *v = xcalloc(1, sizeof(struct mdoc_arg));
1.39 kristaps 278: arg = *v;
1.40 kristaps 279: }
1.39 kristaps 280:
281: arg->argc++;
282: arg->argv = xrealloc(arg->argv, arg->argc *
1.40 kristaps 283: sizeof(struct mdoc_argv));
1.39 kristaps 284:
285: (void)memcpy(&arg->argv[(int)arg->argc - 1],
286: &tmp, sizeof(struct mdoc_argv));
287:
288: return(ARGV_ARG);
289: }
290:
291:
292: void
293: mdoc_argv_free(struct mdoc_arg *p)
294: {
295: int i, j;
296:
1.41 kristaps 297: if (NULL == p)
298: return;
299:
1.40 kristaps 300: if (p->refcnt) {
301: --(p->refcnt);
302: if (p->refcnt)
303: return;
304: }
305:
306: assert(p->argc);
1.39 kristaps 307:
308: /* LINTED */
309: for (i = 0; i < (int)p->argc; i++) {
310: if (0 == p->argv[i].sz)
311: continue;
312: /* LINTED */
313: for (j = 0; j < (int)p->argv[i].sz; j++)
314: free(p->argv[i].value[j]);
1.40 kristaps 315:
1.39 kristaps 316: free(p->argv[i].value);
317: }
318:
1.40 kristaps 319: free(p->argv);
1.39 kristaps 320: free(p);
321: }
322:
323:
324:
1.24 kristaps 325: static int
1.39 kristaps 326: perr(struct mdoc *mdoc, int line, int pos, enum merr code)
1.25 kristaps 327: {
1.39 kristaps 328: char *p;
329:
330: p = NULL;
1.25 kristaps 331:
332: switch (code) {
333: case (EQUOTTERM):
1.39 kristaps 334: p = "unterminated quoted parameter";
1.25 kristaps 335: break;
336: case (EARGVAL):
1.39 kristaps 337: p = "argument requires a value";
1.25 kristaps 338: break;
339: }
1.39 kristaps 340:
341: assert(p);
342: return(mdoc_perr(mdoc, line, pos, p));
1.25 kristaps 343: }
344:
345:
346: static int
1.39 kristaps 347: pwarn(struct mdoc *mdoc, int line, int pos, enum mwarn code)
1.24 kristaps 348: {
1.39 kristaps 349: char *p;
1.24 kristaps 350: int c;
351:
1.39 kristaps 352: p = NULL;
353: c = WARN_SYNTAX;
354:
1.24 kristaps 355: switch (code) {
356: case (WQUOTPARM):
1.39 kristaps 357: p = "unexpected quoted parameter";
1.24 kristaps 358: break;
359: case (WARGVPARM):
1.39 kristaps 360: p = "argument-like parameter";
1.24 kristaps 361: break;
1.25 kristaps 362: case (WCOLEMPTY):
1.39 kristaps 363: p = "last list column is empty";
364: c = WARN_COMPAT;
1.25 kristaps 365: break;
366: case (WTAILWS):
1.39 kristaps 367: p = "trailing whitespace";
368: c = WARN_COMPAT;
1.25 kristaps 369: break;
1.24 kristaps 370: }
1.39 kristaps 371:
372: assert(p);
373: return(mdoc_pwarn(mdoc, line, pos, c, p));
1.24 kristaps 374: }
375:
376:
1.2 kristaps 377: int
1.22 kristaps 378: mdoc_args(struct mdoc *mdoc, int line,
379: int *pos, char *buf, int tok, char **v)
1.1 kristaps 380: {
1.26 kristaps 381: int fl, c, i;
1.22 kristaps 382: struct mdoc_node *n;
383:
1.24 kristaps 384: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
385:
386: /*
1.36 kristaps 387: * Override per-macro argument flags with context-specific ones.
388: * As of now, this is only valid for `It' depending on its list
389: * context.
1.24 kristaps 390: */
391:
1.36 kristaps 392: switch (tok) {
393: case (MDOC_It):
1.24 kristaps 394: for (n = mdoc->last; n; n = n->parent)
1.36 kristaps 395: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
396: break;
397:
1.24 kristaps 398: assert(n);
1.39 kristaps 399: c = (int)(n->args ? n->args->argc : 0);
1.24 kristaps 400: assert(c > 0);
1.26 kristaps 401:
1.36 kristaps 402: /*
403: * Using `Bl -column' adds ARGS_TABSEP to the arguments
404: * and invalidates ARGS_DELIM. Using `Bl -diag' allows
405: * for quoted arguments.
406: */
407:
1.26 kristaps 408: /* LINTED */
1.24 kristaps 409: for (i = 0; i < c; i++) {
1.39 kristaps 410: switch (n->args->argv[i].arg) {
1.35 kristaps 411: case (MDOC_Column):
412: fl |= ARGS_TABSEP;
413: fl &= ~ARGS_DELIM;
414: i = c;
415: break;
416: case (MDOC_Diag):
417: fl |= ARGS_QUOTED;
418: i = c;
419: break;
420: default:
421: break;
422: }
1.24 kristaps 423: }
1.39 kristaps 424: break;
1.36 kristaps 425: default:
426: break;
1.24 kristaps 427: }
428:
1.36 kristaps 429: /* Continue parsing the arguments themselves... */
430:
1.26 kristaps 431: return(args(mdoc, line, pos, buf, fl, v));
432: }
433:
434:
435: static int
436: args(struct mdoc *mdoc, int line,
437: int *pos, char *buf, int fl, char **v)
438: {
1.31 kristaps 439: int i;
1.26 kristaps 440: char *p, *pp;
441:
442: assert(*pos > 0);
443:
444: if (0 == buf[*pos])
445: return(ARGS_EOLN);
446:
447: if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
448: if ( ! pwarn(mdoc, line, *pos, WQUOTPARM))
449: return(ARGS_ERROR);
450:
1.38 kristaps 451: if ( ! (fl & ARGS_ARGVLIKE) && '-' == buf[*pos])
1.26 kristaps 452: if ( ! pwarn(mdoc, line, *pos, WARGVPARM))
453: return(ARGS_ERROR);
454:
1.24 kristaps 455: /*
456: * If the first character is a delimiter and we're to look for
457: * delimited strings, then pass down the buffer seeing if it
458: * follows the pattern of [[::delim::][ ]+]+.
459: */
460:
1.2 kristaps 461: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
1.31 kristaps 462: for (i = *pos; buf[i]; ) {
463: if ( ! mdoc_iscdelim(buf[i]))
1.2 kristaps 464: break;
465: i++;
1.34 kristaps 466: /* There must be at least one space... */
1.37 kristaps 467: if (0 == buf[i] || ! isspace((u_char)buf[i]))
1.34 kristaps 468: break;
469: i++;
1.37 kristaps 470: while (buf[i] && isspace((u_char)buf[i]))
1.2 kristaps 471: i++;
472: }
473: if (0 == buf[i]) {
474: *v = &buf[*pos];
475: return(ARGS_PUNCT);
476: }
477: }
478:
1.24 kristaps 479: /* First parse non-quoted strings. */
1.1 kristaps 480:
1.17 kristaps 481: if ('\"' != buf[*pos] || ! (ARGS_QUOTED & fl)) {
1.1 kristaps 482: *v = &buf[*pos];
483:
1.24 kristaps 484: /*
485: * Thar be dragons here! If we're tab-separated, search
486: * ahead for either a tab or the `Ta' macro. If a tab
487: * is detected, it mustn't be escaped; if a `Ta' is
488: * detected, it must be space-buffered before and after.
489: * If either of these hold true, then prune out the
490: * extra spaces and call it an argument.
491: */
492:
493: if (ARGS_TABSEP & fl) {
494: /* Scan ahead to unescaped tab. */
1.12 kristaps 495:
1.24 kristaps 496: for (p = *v; ; p++) {
497: if (NULL == (p = strchr(p, '\t')))
498: break;
499: if (p == *v)
500: break;
501: if ('\\' != *(p - 1))
1.12 kristaps 502: break;
503: }
1.24 kristaps 504:
505: /* Scan ahead to unescaped `Ta'. */
506:
507: for (pp = *v; ; pp++) {
508: if (NULL == (pp = strstr(pp, "Ta")))
509: break;
510: if (pp > *v && ' ' != *(pp - 1))
511: continue;
512: if (' ' == *(pp + 2) || 0 == *(pp + 2))
513: break;
514: }
515:
516: /* Choose delimiter tab/Ta. */
517:
518: if (p && pp)
519: p = (p < pp ? p : pp);
520: else if ( ! p && pp)
521: p = pp;
522:
523: /* Strip delimiter's preceding whitespace. */
524:
525: if (p && p > *v) {
526: pp = p - 1;
527: while (pp > *v && ' ' == *pp)
528: pp--;
529: if (pp == *v && ' ' == *pp)
530: *pp = 0;
531: else if (' ' == *pp)
532: *(pp + 1) = 0;
533: }
534:
535: /* ...in- and proceding whitespace. */
536:
537: if (p && ('\t' != *p)) {
538: *p++ = 0;
539: *p++ = 0;
540: } else if (p)
541: *p++ = 0;
542:
543: if (p) {
544: while (' ' == *p)
545: p++;
546: if (0 != *p)
547: *(p - 1) = 0;
1.33 kristaps 548: *pos += (int)(p - *v);
1.24 kristaps 549: }
550:
1.25 kristaps 551: if (p && 0 == *p)
552: if ( ! pwarn(mdoc, line, *pos, WCOLEMPTY))
553: return(0);
554: if (p && 0 == *p && p > *v && ' ' == *(p - 1))
555: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
556: return(0);
557:
1.26 kristaps 558: if (p)
559: return(ARGS_WORD);
560:
1.24 kristaps 561: /* Configure the eoln case, too. */
562:
1.26 kristaps 563: p = strchr(*v, 0);
564: assert(p);
565:
566: if (p > *v && ' ' == *(p - 1))
567: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
568: return(0);
1.33 kristaps 569: *pos += (int)(p - *v);
1.24 kristaps 570:
571: return(ARGS_WORD);
572: }
573:
574: /* Do non-tabsep look-ahead here. */
575:
576: if ( ! (ARGS_TABSEP & fl))
1.31 kristaps 577: while (buf[*pos]) {
1.37 kristaps 578: if (isspace((u_char)buf[*pos]))
1.17 kristaps 579: if ('\\' != buf[*pos - 1])
580: break;
1.12 kristaps 581: (*pos)++;
1.17 kristaps 582: }
1.1 kristaps 583:
584: if (0 == buf[*pos])
1.2 kristaps 585: return(ARGS_WORD);
1.1 kristaps 586:
587: buf[(*pos)++] = 0;
1.12 kristaps 588:
1.1 kristaps 589: if (0 == buf[*pos])
1.2 kristaps 590: return(ARGS_WORD);
1.1 kristaps 591:
1.12 kristaps 592: if ( ! (ARGS_TABSEP & fl))
1.37 kristaps 593: while (buf[*pos] && isspace((u_char)buf[*pos]))
1.12 kristaps 594: (*pos)++;
1.1 kristaps 595:
596: if (buf[*pos])
1.2 kristaps 597: return(ARGS_WORD);
1.1 kristaps 598:
1.25 kristaps 599: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
1.2 kristaps 600: return(ARGS_ERROR);
1.1 kristaps 601:
1.2 kristaps 602: return(ARGS_WORD);
603: }
604:
605: /*
606: * If we're a quoted string (and quoted strings are allowed),
607: * then parse ahead to the next quote. If none's found, it's an
1.4 kristaps 608: * error. After, parse to the next word.
1.2 kristaps 609: */
1.1 kristaps 610:
611: *v = &buf[++(*pos)];
612:
613: while (buf[*pos] && '\"' != buf[*pos])
614: (*pos)++;
615:
616: if (0 == buf[*pos]) {
1.25 kristaps 617: (void)perr(mdoc, line, *pos, EQUOTTERM);
1.2 kristaps 618: return(ARGS_ERROR);
1.1 kristaps 619: }
620:
621: buf[(*pos)++] = 0;
622: if (0 == buf[*pos])
1.19 kristaps 623: return(ARGS_QWORD);
1.1 kristaps 624:
1.37 kristaps 625: while (buf[*pos] && isspace((u_char)buf[*pos]))
1.1 kristaps 626: (*pos)++;
627:
628: if (buf[*pos])
1.19 kristaps 629: return(ARGS_QWORD);
1.1 kristaps 630:
1.25 kristaps 631: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
1.2 kristaps 632: return(ARGS_ERROR);
633:
1.19 kristaps 634: return(ARGS_QWORD);
1.1 kristaps 635: }
636:
637:
1.2 kristaps 638: static int
1.30 kristaps 639: argv_a2arg(int tok, const char *argv)
1.1 kristaps 640: {
641:
1.36 kristaps 642: /*
643: * Parse an argument identifier from its text. XXX - this
644: * should really be table-driven to clarify the code.
645: *
646: * If you add an argument to the list, make sure that you
647: * register it here with its one or more macros!
648: */
649:
1.1 kristaps 650: switch (tok) {
1.6 kristaps 651: case (MDOC_An):
652: if (xstrcmp(argv, "split"))
653: return(MDOC_Split);
654: else if (xstrcmp(argv, "nosplit"))
655: return(MDOC_Nosplit);
656: break;
657:
1.2 kristaps 658: case (MDOC_Bd):
1.1 kristaps 659: if (xstrcmp(argv, "ragged"))
660: return(MDOC_Ragged);
661: else if (xstrcmp(argv, "unfilled"))
662: return(MDOC_Unfilled);
1.13 kristaps 663: else if (xstrcmp(argv, "filled"))
664: return(MDOC_Filled);
1.1 kristaps 665: else if (xstrcmp(argv, "literal"))
666: return(MDOC_Literal);
667: else if (xstrcmp(argv, "file"))
668: return(MDOC_File);
669: else if (xstrcmp(argv, "offset"))
670: return(MDOC_Offset);
1.2 kristaps 671: break;
672:
1.8 kristaps 673: case (MDOC_Bf):
674: if (xstrcmp(argv, "emphasis"))
675: return(MDOC_Emphasis);
676: else if (xstrcmp(argv, "literal"))
677: return(MDOC_Literal);
678: else if (xstrcmp(argv, "symbolic"))
679: return(MDOC_Symbolic);
680: break;
681:
1.7 kristaps 682: case (MDOC_Bk):
683: if (xstrcmp(argv, "words"))
684: return(MDOC_Words);
685: break;
686:
1.2 kristaps 687: case (MDOC_Bl):
688: if (xstrcmp(argv, "bullet"))
1.1 kristaps 689: return(MDOC_Bullet);
690: else if (xstrcmp(argv, "dash"))
691: return(MDOC_Dash);
692: else if (xstrcmp(argv, "hyphen"))
693: return(MDOC_Hyphen);
694: else if (xstrcmp(argv, "item"))
695: return(MDOC_Item);
696: else if (xstrcmp(argv, "enum"))
697: return(MDOC_Enum);
698: else if (xstrcmp(argv, "tag"))
699: return(MDOC_Tag);
700: else if (xstrcmp(argv, "diag"))
701: return(MDOC_Diag);
702: else if (xstrcmp(argv, "hang"))
703: return(MDOC_Hang);
704: else if (xstrcmp(argv, "ohang"))
705: return(MDOC_Ohang);
706: else if (xstrcmp(argv, "inset"))
707: return(MDOC_Inset);
708: else if (xstrcmp(argv, "column"))
709: return(MDOC_Column);
710: else if (xstrcmp(argv, "width"))
711: return(MDOC_Width);
1.2 kristaps 712: else if (xstrcmp(argv, "offset"))
713: return(MDOC_Offset);
1.1 kristaps 714: else if (xstrcmp(argv, "compact"))
715: return(MDOC_Compact);
1.2 kristaps 716: break;
1.3 kristaps 717:
718: case (MDOC_Rv):
719: /* FALLTHROUGH */
720: case (MDOC_Ex):
721: if (xstrcmp(argv, "std"))
722: return(MDOC_Std);
723: break;
1.1 kristaps 724: default:
1.8 kristaps 725: break;
1.1 kristaps 726: }
727:
728: return(MDOC_ARG_MAX);
729: }
730:
731:
1.2 kristaps 732: static int
1.26 kristaps 733: argv_multi(struct mdoc *mdoc, int line,
1.39 kristaps 734: struct mdoc_argv *v, int *pos, char *buf)
1.12 kristaps 735: {
736: int c, ppos;
737: char *p;
738:
739: ppos = *pos;
740:
1.39 kristaps 741: for (v->sz = 0; ; v->sz++) {
1.12 kristaps 742: if ('-' == buf[*pos])
743: break;
1.26 kristaps 744: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
1.39 kristaps 745: if (ARGS_ERROR == c)
1.12 kristaps 746: return(0);
1.39 kristaps 747: else if (ARGS_EOLN == c)
1.12 kristaps 748: break;
1.39 kristaps 749:
750: if (0 == v->sz % 5)
751: v->value = xrealloc(v->value,
752: (v->sz + 5) * sizeof(char *));
753:
1.40 kristaps 754: v->value[(int)v->sz] = xstrdup(p);
1.12 kristaps 755: }
756:
1.39 kristaps 757: if (v->sz)
1.12 kristaps 758: return(1);
759:
1.39 kristaps 760: return(perr(mdoc, line, ppos, EARGVAL));
1.12 kristaps 761: }
762:
763:
764: static int
1.36 kristaps 765: argv_opt_single(struct mdoc *mdoc, int line,
1.39 kristaps 766: struct mdoc_argv *v, int *pos, char *buf)
1.36 kristaps 767: {
1.39 kristaps 768: int c;
1.36 kristaps 769: char *p;
770:
771: if ('-' == buf[*pos])
772: return(1);
773:
774: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
775: if (ARGS_ERROR == c)
776: return(0);
777: if (ARGS_EOLN == c)
778: return(1);
779:
780: v->sz = 1;
781: v->value = xcalloc(1, sizeof(char *));
1.40 kristaps 782: v->value[0] = xstrdup(p);
1.36 kristaps 783: return(1);
784: }
785:
786:
787: /*
788: * Parse a single, mandatory value from the stream.
789: */
790: static int
1.26 kristaps 791: argv_single(struct mdoc *mdoc, int line,
1.39 kristaps 792: struct mdoc_argv *v, int *pos, char *buf)
1.1 kristaps 793: {
1.12 kristaps 794: int c, ppos;
1.1 kristaps 795: char *p;
796:
797: ppos = *pos;
798:
1.26 kristaps 799: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
1.12 kristaps 800: if (ARGS_ERROR == c)
801: return(0);
802: if (ARGS_EOLN == c)
1.36 kristaps 803: return(perr(mdoc, line, ppos, EARGVAL));
1.12 kristaps 804:
805: v->sz = 1;
806: v->value = xcalloc(1, sizeof(char *));
1.40 kristaps 807: v->value[0] = xstrdup(p);
1.12 kristaps 808: return(1);
809: }
810:
811:
1.36 kristaps 812: /*
813: * Determine rules for parsing arguments. Arguments can either accept
814: * no parameters, an optional single parameter, one parameter, or
815: * multiple parameters.
816: */
1.12 kristaps 817: static int
1.37 kristaps 818: argv(struct mdoc *mdoc, int tok, int line,
1.39 kristaps 819: struct mdoc_argv *v, int *pos, char *buf)
1.12 kristaps 820: {
1.37 kristaps 821: int fl;
1.12 kristaps 822:
823: v->sz = 0;
824: v->value = NULL;
1.37 kristaps 825: fl = mdoc_argvflags[v->arg];
1.12 kristaps 826:
1.37 kristaps 827: /*
828: * Override the default per-argument value.
829: */
830:
831: switch (tok) {
832: case (MDOC_Ex):
833: fl = ARGV_OPT_SINGLE;
834: break;
835: default:
836: break;
837: }
838:
839: switch (fl) {
1.36 kristaps 840: case (ARGV_SINGLE):
1.26 kristaps 841: return(argv_single(mdoc, line, v, pos, buf));
1.36 kristaps 842: case (ARGV_MULTI):
1.26 kristaps 843: return(argv_multi(mdoc, line, v, pos, buf));
1.36 kristaps 844: case (ARGV_OPT_SINGLE):
845: return(argv_opt_single(mdoc, line, v, pos, buf));
1.1 kristaps 846: default:
1.36 kristaps 847: /* ARGV_NONE */
1.6 kristaps 848: break;
1.1 kristaps 849: }
850:
851: return(1);
852: }
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