Annotation of mandoc/mdoc_argv.c, Revision 1.35
1.35 ! kristaps 1: /* $Id: mdoc_argv.c,v 1.34 2010/03/29 19:28:04 kristaps Exp $ */
1.1 kristaps 2: /*
1.4 kristaps 3: * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
1.1 kristaps 4: *
5: * Permission to use, copy, modify, and distribute this software for any
1.3 kristaps 6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 8: *
1.3 kristaps 9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 16: */
1.33 kristaps 17: #ifdef HAVE_CONFIG_H
18: #include "config.h"
19: #endif
20:
1.1 kristaps 21: #include <sys/types.h>
22:
23: #include <assert.h>
24: #include <ctype.h>
25: #include <stdlib.h>
26: #include <stdio.h>
27: #include <string.h>
28:
29: #include "libmdoc.h"
1.31 kristaps 30: #include "libmandoc.h"
1.1 kristaps 31:
32: /*
33: * Routines to parse arguments of macros. Arguments follow the syntax
34: * of `-arg [val [valN...]]'. Arguments come in all types: quoted
35: * arguments, multiple arguments per value, no-value arguments, etc.
36: *
37: * There's no limit to the number or arguments that may be allocated.
38: */
39:
40: #define ARGV_NONE (1 << 0)
41: #define ARGV_SINGLE (1 << 1)
42: #define ARGV_MULTI (1 << 2)
43: #define ARGV_OPT_SINGLE (1 << 3)
44:
45: #define MULTI_STEP 5
46:
1.35 ! kristaps 47: static int argv_a2arg(enum mdoct, const char *);
1.1 kristaps 48: static int args(struct mdoc *, int, int *,
49: char *, int, char **);
50: static int argv(struct mdoc *, int,
51: struct mdoc_argv *, int *, char *);
52: static int argv_single(struct mdoc *, int,
53: struct mdoc_argv *, int *, char *);
54: static int argv_opt_single(struct mdoc *, int,
55: struct mdoc_argv *, int *, char *);
56: static int argv_multi(struct mdoc *, int,
57: struct mdoc_argv *, int *, char *);
1.2 kristaps 58:
1.1 kristaps 59: /* Per-argument flags. */
60:
61: static int mdoc_argvflags[MDOC_ARG_MAX] = {
62: ARGV_NONE, /* MDOC_Split */
63: ARGV_NONE, /* MDOC_Nosplit */
64: ARGV_NONE, /* MDOC_Ragged */
65: ARGV_NONE, /* MDOC_Unfilled */
66: ARGV_NONE, /* MDOC_Literal */
1.29 kristaps 67: ARGV_SINGLE, /* MDOC_File */
1.26 kristaps 68: ARGV_OPT_SINGLE, /* MDOC_Offset */
1.1 kristaps 69: ARGV_NONE, /* MDOC_Bullet */
70: ARGV_NONE, /* MDOC_Dash */
71: ARGV_NONE, /* MDOC_Hyphen */
72: ARGV_NONE, /* MDOC_Item */
73: ARGV_NONE, /* MDOC_Enum */
74: ARGV_NONE, /* MDOC_Tag */
75: ARGV_NONE, /* MDOC_Diag */
76: ARGV_NONE, /* MDOC_Hang */
77: ARGV_NONE, /* MDOC_Ohang */
78: ARGV_NONE, /* MDOC_Inset */
79: ARGV_MULTI, /* MDOC_Column */
80: ARGV_SINGLE, /* MDOC_Width */
81: ARGV_NONE, /* MDOC_Compact */
1.25 kristaps 82: ARGV_NONE, /* MDOC_Std */
1.1 kristaps 83: ARGV_NONE, /* MDOC_Filled */
84: ARGV_NONE, /* MDOC_Words */
85: ARGV_NONE, /* MDOC_Emphasis */
86: ARGV_NONE, /* MDOC_Symbolic */
87: ARGV_NONE /* MDOC_Symbolic */
88: };
89:
90: static int mdoc_argflags[MDOC_MAX] = {
1.5 kristaps 91: 0, /* Ap */
1.1 kristaps 92: 0, /* Dd */
93: 0, /* Dt */
94: 0, /* Os */
1.17 kristaps 95: 0, /* Sh */
96: 0, /* Ss */
1.1 kristaps 97: ARGS_DELIM, /* Pp */
98: ARGS_DELIM, /* D1 */
1.17 kristaps 99: ARGS_DELIM, /* Dl */
1.1 kristaps 100: 0, /* Bd */
101: 0, /* Ed */
1.17 kristaps 102: 0, /* Bl */
1.1 kristaps 103: 0, /* El */
104: 0, /* It */
105: ARGS_DELIM, /* Ad */
106: ARGS_DELIM, /* An */
1.17 kristaps 107: ARGS_DELIM, /* Ar */
108: 0, /* Cd */
1.1 kristaps 109: ARGS_DELIM, /* Cm */
110: ARGS_DELIM, /* Dv */
111: ARGS_DELIM, /* Er */
112: ARGS_DELIM, /* Ev */
113: 0, /* Ex */
1.17 kristaps 114: ARGS_DELIM, /* Fa */
1.1 kristaps 115: 0, /* Fd */
116: ARGS_DELIM, /* Fl */
1.17 kristaps 117: ARGS_DELIM, /* Fn */
118: ARGS_DELIM, /* Ft */
1.1 kristaps 119: ARGS_DELIM, /* Ic */
120: 0, /* In */
1.17 kristaps 121: ARGS_DELIM, /* Li */
122: 0, /* Nd */
1.1 kristaps 123: ARGS_DELIM, /* Nm */
124: ARGS_DELIM, /* Op */
125: 0, /* Ot */
126: ARGS_DELIM, /* Pa */
127: 0, /* Rv */
1.15 kristaps 128: ARGS_DELIM, /* St */
1.1 kristaps 129: ARGS_DELIM, /* Va */
130: ARGS_DELIM, /* Vt */
131: ARGS_DELIM, /* Xr */
1.17 kristaps 132: 0, /* %A */
133: 0, /* %B */
134: 0, /* %D */
135: 0, /* %I */
136: 0, /* %J */
137: 0, /* %N */
138: 0, /* %O */
139: 0, /* %P */
140: 0, /* %R */
141: 0, /* %T */
142: 0, /* %V */
1.1 kristaps 143: ARGS_DELIM, /* Ac */
144: 0, /* Ao */
145: ARGS_DELIM, /* Aq */
146: ARGS_DELIM, /* At */
147: ARGS_DELIM, /* Bc */
148: 0, /* Bf */
149: 0, /* Bo */
150: ARGS_DELIM, /* Bq */
151: ARGS_DELIM, /* Bsx */
152: ARGS_DELIM, /* Bx */
153: 0, /* Db */
154: ARGS_DELIM, /* Dc */
155: 0, /* Do */
156: ARGS_DELIM, /* Dq */
157: ARGS_DELIM, /* Ec */
158: 0, /* Ef */
159: ARGS_DELIM, /* Em */
160: 0, /* Eo */
161: ARGS_DELIM, /* Fx */
162: ARGS_DELIM, /* Ms */
163: ARGS_DELIM, /* No */
164: ARGS_DELIM, /* Ns */
165: ARGS_DELIM, /* Nx */
166: ARGS_DELIM, /* Ox */
167: ARGS_DELIM, /* Pc */
168: ARGS_DELIM, /* Pf */
169: 0, /* Po */
170: ARGS_DELIM, /* Pq */
171: ARGS_DELIM, /* Qc */
172: ARGS_DELIM, /* Ql */
173: 0, /* Qo */
174: ARGS_DELIM, /* Qq */
175: 0, /* Re */
176: 0, /* Rs */
177: ARGS_DELIM, /* Sc */
178: 0, /* So */
179: ARGS_DELIM, /* Sq */
180: 0, /* Sm */
181: ARGS_DELIM, /* Sx */
1.17 kristaps 182: ARGS_DELIM, /* Sy */
1.1 kristaps 183: ARGS_DELIM, /* Tn */
184: ARGS_DELIM, /* Ux */
185: ARGS_DELIM, /* Xc */
186: 0, /* Xo */
1.17 kristaps 187: 0, /* Fo */
1.1 kristaps 188: 0, /* Fc */
189: 0, /* Oo */
190: ARGS_DELIM, /* Oc */
191: 0, /* Bk */
192: 0, /* Ek */
193: 0, /* Bt */
194: 0, /* Hf */
195: 0, /* Fr */
196: 0, /* Ud */
197: 0, /* Lb */
198: ARGS_DELIM, /* Lp */
1.17 kristaps 199: ARGS_DELIM, /* Lk */
200: ARGS_DELIM, /* Mt */
1.1 kristaps 201: ARGS_DELIM, /* Brq */
202: 0, /* Bro */
203: ARGS_DELIM, /* Brc */
1.17 kristaps 204: 0, /* %C */
1.1 kristaps 205: 0, /* Es */
206: 0, /* En */
207: 0, /* Dx */
1.17 kristaps 208: 0, /* %Q */
1.14 kristaps 209: 0, /* br */
210: 0, /* sp */
1.30 kristaps 211: 0, /* %U */
1.1 kristaps 212: };
213:
214:
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
1.35 ! kristaps 221: mdoc_argv(struct mdoc *m, int line, enum mdoct tok,
1.1 kristaps 222: struct mdoc_arg **v, int *pos, char *buf)
223: {
224: char *p, sv;
225: struct mdoc_argv tmp;
226: struct mdoc_arg *arg;
227:
228: if (0 == buf[*pos])
229: return(ARGV_EOLN);
230:
231: assert(' ' != buf[*pos]);
232:
233: /* Parse through to the first unescaped space. */
234:
235: p = &buf[++(*pos)];
236:
237: assert(*pos > 0);
238:
239: /* LINTED */
240: while (buf[*pos]) {
241: if (' ' == buf[*pos])
242: if ('\\' != buf[*pos - 1])
243: break;
244: (*pos)++;
245: }
246:
247: /* XXX - save zeroed byte, if not an argument. */
248:
249: sv = 0;
250: if (buf[*pos]) {
251: sv = buf[*pos];
252: buf[(*pos)++] = 0;
253: }
254:
255: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
256: tmp.line = line;
257: tmp.pos = *pos;
258:
259: /* See if our token accepts the argument. */
260:
261: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
262: /* XXX - restore saved zeroed byte. */
263: if (sv)
264: buf[*pos - 1] = sv;
265: return(ARGV_WORD);
266: }
267:
268: while (buf[*pos] && ' ' == buf[*pos])
269: (*pos)++;
270:
1.11 kristaps 271: if ( ! argv(m, line, &tmp, pos, buf))
1.1 kristaps 272: return(ARGV_ERROR);
273:
1.31 kristaps 274: if (NULL == (arg = *v))
1.32 kristaps 275: arg = *v = mandoc_calloc(1, sizeof(struct mdoc_arg));
1.1 kristaps 276:
277: arg->argc++;
1.31 kristaps 278: arg->argv = mandoc_realloc
279: (arg->argv, arg->argc * sizeof(struct mdoc_argv));
1.2 kristaps 280:
1.1 kristaps 281: (void)memcpy(&arg->argv[(int)arg->argc - 1],
282: &tmp, sizeof(struct mdoc_argv));
283:
284: return(ARGV_ARG);
285: }
286:
287:
288: void
289: mdoc_argv_free(struct mdoc_arg *p)
290: {
291: int i, j;
292:
293: if (NULL == p)
294: return;
295:
296: if (p->refcnt) {
297: --(p->refcnt);
298: if (p->refcnt)
299: return;
300: }
301: assert(p->argc);
302:
303: /* LINTED */
304: for (i = 0; i < (int)p->argc; i++) {
305: if (0 == p->argv[i].sz)
306: continue;
1.26 kristaps 307: if (NULL == p->argv[i].value)
308: continue;
309:
1.1 kristaps 310: /* LINTED */
311: for (j = 0; j < (int)p->argv[i].sz; j++)
1.26 kristaps 312: if (p->argv[i].value[j])
313: free(p->argv[i].value[j]);
1.1 kristaps 314:
315: free(p->argv[i].value);
316: }
317:
318: free(p->argv);
319: free(p);
320: }
321:
322:
323: int
1.23 kristaps 324: mdoc_zargs(struct mdoc *m, int line, int *pos,
325: char *buf, int flags, char **v)
1.19 kristaps 326: {
327:
1.23 kristaps 328: return(args(m, line, pos, buf, flags, v));
1.19 kristaps 329: }
330:
331:
332: int
1.35 ! kristaps 333: mdoc_args(struct mdoc *m, int line, int *pos,
! 334: char *buf, enum mdoct tok, char **v)
1.1 kristaps 335: {
336: int fl, c, i;
337: struct mdoc_node *n;
338:
1.35 ! kristaps 339: assert(tok && tok < MDOC_MAX);
! 340: fl = mdoc_argflags[tok];
1.1 kristaps 341:
1.17 kristaps 342: if (MDOC_It != tok)
343: return(args(m, line, pos, buf, fl, v));
344:
1.1 kristaps 345: /*
1.17 kristaps 346: * The `It' macro is a special case, as it acquires parameters from its
347: * parent `Bl' context, specifically, we're concerned with -column.
1.1 kristaps 348: */
349:
1.17 kristaps 350: for (n = m->last; n; n = n->parent)
351: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
352: break;
1.1 kristaps 353:
1.17 kristaps 354: assert(n);
355: c = (int)(n->args ? n->args->argc : 0);
356: assert(c > 0);
1.1 kristaps 357:
1.17 kristaps 358: /* LINTED */
359: for (i = 0; i < c; i++) {
360: if (MDOC_Column != n->args->argv[i].arg)
361: continue;
362: fl |= ARGS_TABSEP;
363: fl &= ~ARGS_DELIM;
1.1 kristaps 364: break;
365: }
366:
1.11 kristaps 367: return(args(m, line, pos, buf, fl, v));
1.1 kristaps 368: }
369:
370:
371: static int
1.13 kristaps 372: args(struct mdoc *m, int line, int *pos,
373: char *buf, int fl, char **v)
1.1 kristaps 374: {
1.21 kristaps 375: int i;
1.1 kristaps 376: char *p, *pp;
377:
1.24 kristaps 378: /*
379: * Parse out the terms (like `val' in `.Xx -arg val' or simply
380: * `.Xx val'), which can have all sorts of properties:
381: *
382: * ARGS_DELIM: use special handling if encountering trailing
383: * delimiters in the form of [[::delim::][ ]+]+.
384: *
385: * ARGS_NOWARN: don't post warnings. This is only used when
386: * re-parsing delimiters, as the warnings have already been
387: * posted.
388: *
389: * ARGS_TABSEP: use special handling for tab/`Ta' separated
390: * phrases like in `Bl -column'.
391: */
392:
1.17 kristaps 393: assert(*pos);
394: assert(' ' != buf[*pos]);
1.1 kristaps 395:
396: if (0 == buf[*pos])
397: return(ARGS_EOLN);
398:
399: /*
400: * If the first character is a delimiter and we're to look for
401: * delimited strings, then pass down the buffer seeing if it
402: * follows the pattern of [[::delim::][ ]+]+.
403: */
404:
1.34 kristaps 405: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos]) > 1) {
1.1 kristaps 406: for (i = *pos; buf[i]; ) {
1.34 kristaps 407: if ( mdoc_iscdelim(buf[i]) < 2)
1.1 kristaps 408: break;
409: i++;
410: if (0 == buf[i] || ' ' != buf[i])
411: break;
412: i++;
413: while (buf[i] && ' ' == buf[i])
414: i++;
415: }
1.17 kristaps 416:
1.1 kristaps 417: if (0 == buf[i]) {
418: *v = &buf[*pos];
1.23 kristaps 419: if (' ' != buf[i - 1])
420: return(ARGS_PUNCT);
421: if (ARGS_NOWARN & fl)
422: return(ARGS_PUNCT);
423: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
424: return(ARGS_ERROR);
1.1 kristaps 425: return(ARGS_PUNCT);
426: }
427: }
428:
1.17 kristaps 429: *v = &buf[*pos];
1.1 kristaps 430:
1.17 kristaps 431: /*
432: * First handle TABSEP items, restricted to `Bl -column'. This
433: * ignores conventional token parsing and instead uses tabs or
434: * `Ta' macros to separate phrases. Phrases are parsed again
435: * for arguments at a later phase.
436: */
1.1 kristaps 437:
1.17 kristaps 438: if (ARGS_TABSEP & fl) {
1.20 kristaps 439: /* Scan ahead to tab (can't be escaped). */
1.17 kristaps 440: p = strchr(*v, '\t');
441:
442: /* Scan ahead to unescaped `Ta'. */
443: for (pp = *v; ; pp++) {
444: if (NULL == (pp = strstr(pp, "Ta")))
445: break;
446: if (pp > *v && ' ' != *(pp - 1))
447: continue;
448: if (' ' == *(pp + 2) || 0 == *(pp + 2))
449: break;
450: }
451:
1.21 kristaps 452: /*
453: * Adjust new-buffer position to be beyond delimiter
454: * mark (e.g., Ta -> end + 2).
455: */
1.20 kristaps 456: if (p && pp) {
457: *pos += pp < p ? 2 : 1;
458: p = pp < p ? pp : p;
459: } else if (p && ! pp) {
460: *pos += 1;
461: } else if (pp && ! p) {
1.17 kristaps 462: p = pp;
1.20 kristaps 463: *pos += 2;
464: } else
465: p = strchr(*v, 0);
466:
1.21 kristaps 467: /* Whitespace check for eoln case... */
1.23 kristaps 468: if (0 == *p && ' ' == *(p - 1) && ! (ARGS_NOWARN & fl))
1.20 kristaps 469: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
470: return(ARGS_ERROR);
471:
472: *pos += (int)(p - *v);
1.17 kristaps 473:
474: /* Strip delimiter's preceding whitespace. */
1.20 kristaps 475: pp = p - 1;
476: while (pp > *v && ' ' == *pp) {
477: if (pp > *v && '\\' == *(pp - 1))
478: break;
479: pp--;
1.17 kristaps 480: }
1.20 kristaps 481: *(pp + 1) = 0;
1.17 kristaps 482:
1.20 kristaps 483: /* Strip delimiter's proceeding whitespace. */
484: for (pp = &buf[*pos]; ' ' == *pp; pp++, (*pos)++)
485: /* Skip ahead. */ ;
1.1 kristaps 486:
1.17 kristaps 487: return(ARGS_PHRASE);
488: }
1.1 kristaps 489:
1.17 kristaps 490: /*
491: * Process a quoted literal. A quote begins with a double-quote
492: * and ends with a double-quote NOT preceded by a double-quote.
493: * Whitespace is NOT involved in literal termination.
494: */
1.1 kristaps 495:
1.17 kristaps 496: if ('\"' == buf[*pos]) {
497: *v = &buf[++(*pos)];
1.1 kristaps 498:
1.17 kristaps 499: for ( ; buf[*pos]; (*pos)++) {
500: if ('\"' != buf[*pos])
501: continue;
502: if ('\"' != buf[*pos + 1])
503: break;
504: (*pos)++;
505: }
1.1 kristaps 506:
1.17 kristaps 507: if (0 == buf[*pos]) {
1.23 kristaps 508: if (ARGS_NOWARN & fl)
509: return(ARGS_QWORD);
1.18 kristaps 510: if ( ! mdoc_pwarn(m, line, *pos, EQUOTTERM))
511: return(ARGS_ERROR);
512: return(ARGS_QWORD);
1.17 kristaps 513: }
1.1 kristaps 514:
515: buf[(*pos)++] = 0;
516:
517: if (0 == buf[*pos])
1.17 kristaps 518: return(ARGS_QWORD);
1.1 kristaps 519:
1.17 kristaps 520: while (' ' == buf[*pos])
521: (*pos)++;
1.1 kristaps 522:
1.23 kristaps 523: if (0 == buf[*pos] && ! (ARGS_NOWARN & fl))
1.17 kristaps 524: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
525: return(ARGS_ERROR);
1.1 kristaps 526:
1.17 kristaps 527: return(ARGS_QWORD);
1.1 kristaps 528: }
529:
1.17 kristaps 530: /*
531: * A non-quoted term progresses until either the end of line or
532: * a non-escaped whitespace.
1.1 kristaps 533: */
534:
1.17 kristaps 535: for ( ; buf[*pos]; (*pos)++)
536: if (' ' == buf[*pos] && '\\' != buf[*pos - 1])
537: break;
1.1 kristaps 538:
1.17 kristaps 539: if (0 == buf[*pos])
540: return(ARGS_WORD);
1.1 kristaps 541:
542: buf[(*pos)++] = 0;
543:
1.17 kristaps 544: while (' ' == buf[*pos])
1.1 kristaps 545: (*pos)++;
546:
1.23 kristaps 547: if (0 == buf[*pos] && ! (ARGS_NOWARN & fl))
1.17 kristaps 548: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
549: return(ARGS_ERROR);
1.1 kristaps 550:
1.17 kristaps 551: return(ARGS_WORD);
1.1 kristaps 552: }
553:
554:
555: static int
1.35 ! kristaps 556: argv_a2arg(enum mdoct tok, const char *p)
1.1 kristaps 557: {
558:
559: /*
560: * Parse an argument identifier from its text. XXX - this
561: * should really be table-driven to clarify the code.
562: *
563: * If you add an argument to the list, make sure that you
564: * register it here with its one or more macros!
565: */
566:
567: switch (tok) {
568: case (MDOC_An):
1.27 kristaps 569: if (0 == strcmp(p, "split"))
1.1 kristaps 570: return(MDOC_Split);
1.27 kristaps 571: else if (0 == strcmp(p, "nosplit"))
1.1 kristaps 572: return(MDOC_Nosplit);
573: break;
574:
575: case (MDOC_Bd):
1.27 kristaps 576: if (0 == strcmp(p, "ragged"))
1.1 kristaps 577: return(MDOC_Ragged);
1.27 kristaps 578: else if (0 == strcmp(p, "unfilled"))
1.1 kristaps 579: return(MDOC_Unfilled);
1.27 kristaps 580: else if (0 == strcmp(p, "filled"))
1.1 kristaps 581: return(MDOC_Filled);
1.27 kristaps 582: else if (0 == strcmp(p, "literal"))
1.1 kristaps 583: return(MDOC_Literal);
1.27 kristaps 584: else if (0 == strcmp(p, "file"))
1.1 kristaps 585: return(MDOC_File);
1.27 kristaps 586: else if (0 == strcmp(p, "offset"))
1.1 kristaps 587: return(MDOC_Offset);
1.27 kristaps 588: else if (0 == strcmp(p, "compact"))
1.1 kristaps 589: return(MDOC_Compact);
1.28 kristaps 590: else if (0 == strcmp(p, "centered"))
591: return(MDOC_Centred);
1.1 kristaps 592: break;
593:
594: case (MDOC_Bf):
1.27 kristaps 595: if (0 == strcmp(p, "emphasis"))
1.1 kristaps 596: return(MDOC_Emphasis);
1.27 kristaps 597: else if (0 == strcmp(p, "literal"))
1.1 kristaps 598: return(MDOC_Literal);
1.27 kristaps 599: else if (0 == strcmp(p, "symbolic"))
1.1 kristaps 600: return(MDOC_Symbolic);
601: break;
602:
603: case (MDOC_Bk):
1.27 kristaps 604: if (0 == strcmp(p, "words"))
1.1 kristaps 605: return(MDOC_Words);
606: break;
607:
608: case (MDOC_Bl):
1.27 kristaps 609: if (0 == strcmp(p, "bullet"))
1.1 kristaps 610: return(MDOC_Bullet);
1.27 kristaps 611: else if (0 == strcmp(p, "dash"))
1.1 kristaps 612: return(MDOC_Dash);
1.27 kristaps 613: else if (0 == strcmp(p, "hyphen"))
1.1 kristaps 614: return(MDOC_Hyphen);
1.27 kristaps 615: else if (0 == strcmp(p, "item"))
1.1 kristaps 616: return(MDOC_Item);
1.27 kristaps 617: else if (0 == strcmp(p, "enum"))
1.1 kristaps 618: return(MDOC_Enum);
1.27 kristaps 619: else if (0 == strcmp(p, "tag"))
1.1 kristaps 620: return(MDOC_Tag);
1.27 kristaps 621: else if (0 == strcmp(p, "diag"))
1.1 kristaps 622: return(MDOC_Diag);
1.27 kristaps 623: else if (0 == strcmp(p, "hang"))
1.1 kristaps 624: return(MDOC_Hang);
1.27 kristaps 625: else if (0 == strcmp(p, "ohang"))
1.1 kristaps 626: return(MDOC_Ohang);
1.27 kristaps 627: else if (0 == strcmp(p, "inset"))
1.1 kristaps 628: return(MDOC_Inset);
1.27 kristaps 629: else if (0 == strcmp(p, "column"))
1.1 kristaps 630: return(MDOC_Column);
1.27 kristaps 631: else if (0 == strcmp(p, "width"))
1.1 kristaps 632: return(MDOC_Width);
1.27 kristaps 633: else if (0 == strcmp(p, "offset"))
1.1 kristaps 634: return(MDOC_Offset);
1.27 kristaps 635: else if (0 == strcmp(p, "compact"))
1.1 kristaps 636: return(MDOC_Compact);
1.27 kristaps 637: else if (0 == strcmp(p, "nested"))
1.1 kristaps 638: return(MDOC_Nested);
639: break;
640:
641: case (MDOC_Rv):
642: /* FALLTHROUGH */
643: case (MDOC_Ex):
1.27 kristaps 644: if (0 == strcmp(p, "std"))
1.1 kristaps 645: return(MDOC_Std);
646: break;
647: default:
648: break;
649: }
650:
651: return(MDOC_ARG_MAX);
652: }
653:
654:
655: static int
1.11 kristaps 656: argv_multi(struct mdoc *m, int line,
1.1 kristaps 657: struct mdoc_argv *v, int *pos, char *buf)
658: {
1.8 kristaps 659: int c;
1.1 kristaps 660: char *p;
661:
662: for (v->sz = 0; ; v->sz++) {
663: if ('-' == buf[*pos])
664: break;
1.17 kristaps 665: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 666: if (ARGS_ERROR == c)
667: return(0);
668: else if (ARGS_EOLN == c)
669: break;
670:
1.31 kristaps 671: if (0 == v->sz % MULTI_STEP)
672: v->value = mandoc_realloc(v->value,
1.1 kristaps 673: (v->sz + MULTI_STEP) * sizeof(char *));
1.31 kristaps 674:
675: v->value[(int)v->sz] = mandoc_strdup(p);
1.1 kristaps 676: }
677:
1.7 kristaps 678: return(1);
1.1 kristaps 679: }
680:
681:
682: static int
1.11 kristaps 683: argv_opt_single(struct mdoc *m, int line,
1.1 kristaps 684: struct mdoc_argv *v, int *pos, char *buf)
685: {
686: int c;
687: char *p;
688:
689: if ('-' == buf[*pos])
690: return(1);
691:
1.17 kristaps 692: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 693: if (ARGS_ERROR == c)
694: return(0);
695: if (ARGS_EOLN == c)
696: return(1);
697:
698: v->sz = 1;
1.31 kristaps 699: v->value = mandoc_malloc(sizeof(char *));
700: v->value[0] = mandoc_strdup(p);
1.2 kristaps 701:
1.1 kristaps 702: return(1);
703: }
704:
705:
706: /*
707: * Parse a single, mandatory value from the stream.
708: */
709: static int
1.11 kristaps 710: argv_single(struct mdoc *m, int line,
1.1 kristaps 711: struct mdoc_argv *v, int *pos, char *buf)
712: {
713: int c, ppos;
714: char *p;
715:
716: ppos = *pos;
717:
1.17 kristaps 718: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 719: if (ARGS_ERROR == c)
720: return(0);
721: if (ARGS_EOLN == c)
1.11 kristaps 722: return(mdoc_perr(m, line, ppos, EARGVAL));
1.1 kristaps 723:
724: v->sz = 1;
1.31 kristaps 725: v->value = mandoc_malloc(sizeof(char *));
726: v->value[0] = mandoc_strdup(p);
1.2 kristaps 727:
1.1 kristaps 728: return(1);
729: }
730:
731:
732: /*
733: * Determine rules for parsing arguments. Arguments can either accept
734: * no parameters, an optional single parameter, one parameter, or
735: * multiple parameters.
736: */
737: static int
738: argv(struct mdoc *mdoc, int line,
739: struct mdoc_argv *v, int *pos, char *buf)
740: {
741:
742: v->sz = 0;
743: v->value = NULL;
744:
745: switch (mdoc_argvflags[v->arg]) {
746: case (ARGV_SINGLE):
747: return(argv_single(mdoc, line, v, pos, buf));
748: case (ARGV_MULTI):
749: return(argv_multi(mdoc, line, v, pos, buf));
750: case (ARGV_OPT_SINGLE):
751: return(argv_opt_single(mdoc, line, v, pos, buf));
752: default:
753: /* ARGV_NONE */
754: break;
755: }
756:
757: return(1);
758: }
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