Annotation of mandoc/mdoc_argv.c, Revision 1.21
1.21 ! kristaps 1: /* $Id: mdoc_argv.c,v 1.20 2009/07/20 14:09:38 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: */
17: #include <sys/types.h>
18:
19: #include <assert.h>
20: #include <ctype.h>
21: #include <stdlib.h>
22: #include <stdio.h>
23: #include <string.h>
24:
25: #include "libmdoc.h"
26:
27: /*
28: * Routines to parse arguments of macros. Arguments follow the syntax
29: * of `-arg [val [valN...]]'. Arguments come in all types: quoted
30: * arguments, multiple arguments per value, no-value arguments, etc.
31: *
32: * There's no limit to the number or arguments that may be allocated.
33: */
34:
1.6 kristaps 35: /* FIXME .Bf Li raises "macro-like parameter". */
36:
1.1 kristaps 37: #define ARGS_DELIM (1 << 1)
38: #define ARGS_TABSEP (1 << 2)
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:
47: static int argv_a2arg(int, const char *);
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 */
67: ARGV_NONE, /* MDOC_File */
68: ARGV_SINGLE, /* MDOC_Offset */
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 */
82: ARGV_OPT_SINGLE, /* MDOC_Std */
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 */
1.1 kristaps 211: };
212:
213:
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
1.11 kristaps 220: mdoc_argv(struct mdoc *m, int line, int tok,
1.1 kristaps 221: struct mdoc_arg **v, int *pos, char *buf)
222: {
223: char *p, sv;
224: struct mdoc_argv tmp;
225: struct mdoc_arg *arg;
226:
227: if (0 == buf[*pos])
228: return(ARGV_EOLN);
229:
230: assert(' ' != buf[*pos]);
231:
232: /* Parse through to the first unescaped space. */
233:
234: p = &buf[++(*pos)];
235:
236: assert(*pos > 0);
237:
238: /* LINTED */
239: while (buf[*pos]) {
240: if (' ' == buf[*pos])
241: if ('\\' != buf[*pos - 1])
242: break;
243: (*pos)++;
244: }
245:
246: /* XXX - save zeroed byte, if not an argument. */
247:
248: sv = 0;
249: if (buf[*pos]) {
250: sv = buf[*pos];
251: buf[(*pos)++] = 0;
252: }
253:
254: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
255: tmp.line = line;
256: tmp.pos = *pos;
257:
258: /* See if our token accepts the argument. */
259:
260: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
261: /* XXX - restore saved zeroed byte. */
262: if (sv)
263: buf[*pos - 1] = sv;
264: return(ARGV_WORD);
265: }
266:
267: while (buf[*pos] && ' ' == buf[*pos])
268: (*pos)++;
269:
1.11 kristaps 270: if ( ! argv(m, line, &tmp, pos, buf))
1.1 kristaps 271: return(ARGV_ERROR);
272:
273: if (NULL == (arg = *v)) {
1.2 kristaps 274: *v = calloc(1, sizeof(struct mdoc_arg));
275: if (NULL == *v) {
1.11 kristaps 276: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 277: return(ARGV_ERROR);
278: }
1.1 kristaps 279: arg = *v;
280: }
281:
282: arg->argc++;
1.2 kristaps 283: arg->argv = realloc(arg->argv, arg->argc *
1.1 kristaps 284: sizeof(struct mdoc_argv));
285:
1.2 kristaps 286: if (NULL == arg->argv) {
1.11 kristaps 287: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 288: return(ARGV_ERROR);
289: }
290:
1.1 kristaps 291: (void)memcpy(&arg->argv[(int)arg->argc - 1],
292: &tmp, sizeof(struct mdoc_argv));
293:
294: return(ARGV_ARG);
295: }
296:
297:
298: void
299: mdoc_argv_free(struct mdoc_arg *p)
300: {
301: int i, j;
302:
303: if (NULL == p)
304: return;
305:
306: if (p->refcnt) {
307: --(p->refcnt);
308: if (p->refcnt)
309: return;
310: }
311: assert(p->argc);
312:
313: /* LINTED */
314: for (i = 0; i < (int)p->argc; i++) {
315: if (0 == p->argv[i].sz)
316: continue;
317: /* LINTED */
318: for (j = 0; j < (int)p->argv[i].sz; j++)
319: free(p->argv[i].value[j]);
320:
321: free(p->argv[i].value);
322: }
323:
324: free(p->argv);
325: free(p);
326: }
327:
328:
329: int
1.19 kristaps 330: mdoc_zargs(struct mdoc *m, int line, int *pos, char *buf, char **v)
331: {
332:
333: return(args(m, line, pos, buf, 0, v));
334: }
335:
336:
337: int
1.11 kristaps 338: mdoc_args(struct mdoc *m, int line,
1.1 kristaps 339: int *pos, char *buf, int tok, char **v)
340: {
341: int fl, c, i;
342: struct mdoc_node *n;
343:
344: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
345:
1.17 kristaps 346: if (MDOC_It != tok)
347: return(args(m, line, pos, buf, fl, v));
348:
1.1 kristaps 349: /*
1.17 kristaps 350: * The `It' macro is a special case, as it acquires parameters from its
351: * parent `Bl' context, specifically, we're concerned with -column.
1.1 kristaps 352: */
353:
1.17 kristaps 354: for (n = m->last; n; n = n->parent)
355: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
356: break;
1.1 kristaps 357:
1.17 kristaps 358: assert(n);
359: c = (int)(n->args ? n->args->argc : 0);
360: assert(c > 0);
1.1 kristaps 361:
1.17 kristaps 362: /* LINTED */
363: for (i = 0; i < c; i++) {
364: if (MDOC_Column != n->args->argv[i].arg)
365: continue;
366: fl |= ARGS_TABSEP;
367: fl &= ~ARGS_DELIM;
1.1 kristaps 368: break;
369: }
370:
1.11 kristaps 371: return(args(m, line, pos, buf, fl, v));
1.1 kristaps 372: }
373:
374:
375: static int
1.13 kristaps 376: args(struct mdoc *m, int line, int *pos,
377: char *buf, int fl, char **v)
1.1 kristaps 378: {
1.21 ! kristaps 379: int i;
1.1 kristaps 380: char *p, *pp;
381:
1.17 kristaps 382: assert(*pos);
383: assert(' ' != buf[*pos]);
1.1 kristaps 384:
385: if (0 == buf[*pos])
386: return(ARGS_EOLN);
387:
388: /*
389: * If the first character is a delimiter and we're to look for
390: * delimited strings, then pass down the buffer seeing if it
391: * follows the pattern of [[::delim::][ ]+]+.
392: */
393:
394: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
395: for (i = *pos; buf[i]; ) {
396: if ( ! mdoc_iscdelim(buf[i]))
397: break;
398: i++;
399: if (0 == buf[i] || ' ' != buf[i])
400: break;
401: i++;
402: while (buf[i] && ' ' == buf[i])
403: i++;
404: }
1.17 kristaps 405:
406: /* FIXME: warn about trailing whitespace. */
407:
1.1 kristaps 408: if (0 == buf[i]) {
409: *v = &buf[*pos];
410: return(ARGS_PUNCT);
411: }
412: }
413:
1.17 kristaps 414: *v = &buf[*pos];
1.1 kristaps 415:
1.17 kristaps 416: /*
417: * First handle TABSEP items, restricted to `Bl -column'. This
418: * ignores conventional token parsing and instead uses tabs or
419: * `Ta' macros to separate phrases. Phrases are parsed again
420: * for arguments at a later phase.
421: */
1.1 kristaps 422:
1.17 kristaps 423: if (ARGS_TABSEP & fl) {
1.20 kristaps 424: /* Scan ahead to tab (can't be escaped). */
1.17 kristaps 425: p = strchr(*v, '\t');
426:
427: /* Scan ahead to unescaped `Ta'. */
428: for (pp = *v; ; pp++) {
429: if (NULL == (pp = strstr(pp, "Ta")))
430: break;
431: if (pp > *v && ' ' != *(pp - 1))
432: continue;
433: if (' ' == *(pp + 2) || 0 == *(pp + 2))
434: break;
435: }
436:
1.21 ! kristaps 437: /*
! 438: * Adjust new-buffer position to be beyond delimiter
! 439: * mark (e.g., Ta -> end + 2).
! 440: */
1.20 kristaps 441: if (p && pp) {
442: *pos += pp < p ? 2 : 1;
443: p = pp < p ? pp : p;
444: } else if (p && ! pp) {
445: *pos += 1;
446: } else if (pp && ! p) {
1.17 kristaps 447: p = pp;
1.20 kristaps 448: *pos += 2;
449: } else
450: p = strchr(*v, 0);
451:
1.21 ! kristaps 452: /* Whitespace check for eoln case... */
1.20 kristaps 453: if (0 == *p && ' ' == *(p - 1))
454: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
455: return(ARGS_ERROR);
456:
457: *pos += (int)(p - *v);
1.17 kristaps 458:
459: /* Strip delimiter's preceding whitespace. */
1.20 kristaps 460: pp = p - 1;
461: while (pp > *v && ' ' == *pp) {
462: if (pp > *v && '\\' == *(pp - 1))
463: break;
464: pp--;
1.17 kristaps 465: }
1.20 kristaps 466: *(pp + 1) = 0;
1.17 kristaps 467:
1.20 kristaps 468: /* Strip delimiter's proceeding whitespace. */
469: for (pp = &buf[*pos]; ' ' == *pp; pp++, (*pos)++)
470: /* Skip ahead. */ ;
1.1 kristaps 471:
1.17 kristaps 472: return(ARGS_PHRASE);
473: }
1.1 kristaps 474:
1.17 kristaps 475: /*
476: * Process a quoted literal. A quote begins with a double-quote
477: * and ends with a double-quote NOT preceded by a double-quote.
478: * Whitespace is NOT involved in literal termination.
479: */
1.1 kristaps 480:
1.17 kristaps 481: if ('\"' == buf[*pos]) {
482: *v = &buf[++(*pos)];
1.1 kristaps 483:
1.17 kristaps 484: for ( ; buf[*pos]; (*pos)++) {
485: if ('\"' != buf[*pos])
486: continue;
487: if ('\"' != buf[*pos + 1])
488: break;
489: (*pos)++;
490: }
1.1 kristaps 491:
1.17 kristaps 492: if (0 == buf[*pos]) {
1.18 kristaps 493: if ( ! mdoc_pwarn(m, line, *pos, EQUOTTERM))
494: return(ARGS_ERROR);
495: return(ARGS_QWORD);
1.17 kristaps 496: }
1.1 kristaps 497:
498: buf[(*pos)++] = 0;
499:
500: if (0 == buf[*pos])
1.17 kristaps 501: return(ARGS_QWORD);
1.1 kristaps 502:
1.17 kristaps 503: while (' ' == buf[*pos])
504: (*pos)++;
1.1 kristaps 505:
1.17 kristaps 506: if (0 == buf[*pos])
507: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
508: return(ARGS_ERROR);
1.1 kristaps 509:
1.17 kristaps 510: return(ARGS_QWORD);
1.1 kristaps 511: }
512:
1.17 kristaps 513: /*
514: * A non-quoted term progresses until either the end of line or
515: * a non-escaped whitespace.
1.1 kristaps 516: */
517:
1.17 kristaps 518: for ( ; buf[*pos]; (*pos)++)
519: if (' ' == buf[*pos] && '\\' != buf[*pos - 1])
520: break;
1.1 kristaps 521:
1.17 kristaps 522: if (0 == buf[*pos])
523: return(ARGS_WORD);
1.1 kristaps 524:
525: buf[(*pos)++] = 0;
526:
1.17 kristaps 527: while (' ' == buf[*pos])
1.1 kristaps 528: (*pos)++;
529:
1.17 kristaps 530: if (0 == buf[*pos])
531: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
532: return(ARGS_ERROR);
1.1 kristaps 533:
1.17 kristaps 534: return(ARGS_WORD);
1.1 kristaps 535: }
536:
537:
538: static int
539: argv_a2arg(int tok, const char *argv)
540: {
541:
542: /*
543: * Parse an argument identifier from its text. XXX - this
544: * should really be table-driven to clarify the code.
545: *
546: * If you add an argument to the list, make sure that you
547: * register it here with its one or more macros!
548: */
549:
550: switch (tok) {
551: case (MDOC_An):
1.2 kristaps 552: if (0 == strcmp(argv, "split"))
1.1 kristaps 553: return(MDOC_Split);
1.2 kristaps 554: else if (0 == strcmp(argv, "nosplit"))
1.1 kristaps 555: return(MDOC_Nosplit);
556: break;
557:
558: case (MDOC_Bd):
1.2 kristaps 559: if (0 == strcmp(argv, "ragged"))
1.1 kristaps 560: return(MDOC_Ragged);
1.2 kristaps 561: else if (0 == strcmp(argv, "unfilled"))
1.1 kristaps 562: return(MDOC_Unfilled);
1.2 kristaps 563: else if (0 == strcmp(argv, "filled"))
1.1 kristaps 564: return(MDOC_Filled);
1.2 kristaps 565: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 566: return(MDOC_Literal);
1.2 kristaps 567: else if (0 == strcmp(argv, "file"))
1.1 kristaps 568: return(MDOC_File);
1.2 kristaps 569: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 570: return(MDOC_Offset);
1.2 kristaps 571: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 572: return(MDOC_Compact);
573: break;
574:
575: case (MDOC_Bf):
1.2 kristaps 576: if (0 == strcmp(argv, "emphasis"))
1.1 kristaps 577: return(MDOC_Emphasis);
1.2 kristaps 578: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 579: return(MDOC_Literal);
1.2 kristaps 580: else if (0 == strcmp(argv, "symbolic"))
1.1 kristaps 581: return(MDOC_Symbolic);
582: break;
583:
584: case (MDOC_Bk):
1.2 kristaps 585: if (0 == strcmp(argv, "words"))
1.1 kristaps 586: return(MDOC_Words);
587: break;
588:
589: case (MDOC_Bl):
1.2 kristaps 590: if (0 == strcmp(argv, "bullet"))
1.1 kristaps 591: return(MDOC_Bullet);
1.2 kristaps 592: else if (0 == strcmp(argv, "dash"))
1.1 kristaps 593: return(MDOC_Dash);
1.2 kristaps 594: else if (0 == strcmp(argv, "hyphen"))
1.1 kristaps 595: return(MDOC_Hyphen);
1.2 kristaps 596: else if (0 == strcmp(argv, "item"))
1.1 kristaps 597: return(MDOC_Item);
1.2 kristaps 598: else if (0 == strcmp(argv, "enum"))
1.1 kristaps 599: return(MDOC_Enum);
1.2 kristaps 600: else if (0 == strcmp(argv, "tag"))
1.1 kristaps 601: return(MDOC_Tag);
1.2 kristaps 602: else if (0 == strcmp(argv, "diag"))
1.1 kristaps 603: return(MDOC_Diag);
1.2 kristaps 604: else if (0 == strcmp(argv, "hang"))
1.1 kristaps 605: return(MDOC_Hang);
1.2 kristaps 606: else if (0 == strcmp(argv, "ohang"))
1.1 kristaps 607: return(MDOC_Ohang);
1.2 kristaps 608: else if (0 == strcmp(argv, "inset"))
1.1 kristaps 609: return(MDOC_Inset);
1.2 kristaps 610: else if (0 == strcmp(argv, "column"))
1.1 kristaps 611: return(MDOC_Column);
1.2 kristaps 612: else if (0 == strcmp(argv, "width"))
1.1 kristaps 613: return(MDOC_Width);
1.2 kristaps 614: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 615: return(MDOC_Offset);
1.2 kristaps 616: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 617: return(MDOC_Compact);
1.2 kristaps 618: else if (0 == strcmp(argv, "nested"))
1.1 kristaps 619: return(MDOC_Nested);
620: break;
621:
622: case (MDOC_Rv):
623: /* FALLTHROUGH */
624: case (MDOC_Ex):
1.2 kristaps 625: if (0 == strcmp(argv, "std"))
1.1 kristaps 626: return(MDOC_Std);
627: break;
628: default:
629: break;
630: }
631:
632: return(MDOC_ARG_MAX);
633: }
634:
635:
636: static int
1.11 kristaps 637: argv_multi(struct mdoc *m, int line,
1.1 kristaps 638: struct mdoc_argv *v, int *pos, char *buf)
639: {
1.8 kristaps 640: int c;
1.1 kristaps 641: char *p;
642:
643: for (v->sz = 0; ; v->sz++) {
644: if ('-' == buf[*pos])
645: break;
1.17 kristaps 646: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 647: if (ARGS_ERROR == c)
648: return(0);
649: else if (ARGS_EOLN == c)
650: break;
651:
1.2 kristaps 652: if (0 == v->sz % MULTI_STEP) {
653: v->value = realloc(v->value,
1.1 kristaps 654: (v->sz + MULTI_STEP) * sizeof(char *));
1.2 kristaps 655: if (NULL == v->value) {
1.11 kristaps 656: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 657: return(ARGV_ERROR);
658: }
659: }
1.1 kristaps 660: if (NULL == (v->value[(int)v->sz] = strdup(p)))
1.11 kristaps 661: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 662: }
663:
1.7 kristaps 664: return(1);
1.1 kristaps 665: }
666:
667:
668: static int
1.11 kristaps 669: argv_opt_single(struct mdoc *m, int line,
1.1 kristaps 670: struct mdoc_argv *v, int *pos, char *buf)
671: {
672: int c;
673: char *p;
674:
675: if ('-' == buf[*pos])
676: return(1);
677:
1.17 kristaps 678: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 679: if (ARGS_ERROR == c)
680: return(0);
681: if (ARGS_EOLN == c)
682: return(1);
683:
684: v->sz = 1;
685: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.11 kristaps 686: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 687: if (NULL == (v->value[0] = strdup(p)))
1.11 kristaps 688: return(mdoc_nerr(m, m->last, EMALLOC));
1.2 kristaps 689:
1.1 kristaps 690: return(1);
691: }
692:
693:
694: /*
695: * Parse a single, mandatory value from the stream.
696: */
697: static int
1.11 kristaps 698: argv_single(struct mdoc *m, int line,
1.1 kristaps 699: struct mdoc_argv *v, int *pos, char *buf)
700: {
701: int c, ppos;
702: char *p;
703:
704: ppos = *pos;
705:
1.17 kristaps 706: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 707: if (ARGS_ERROR == c)
708: return(0);
709: if (ARGS_EOLN == c)
1.11 kristaps 710: return(mdoc_perr(m, line, ppos, EARGVAL));
1.1 kristaps 711:
712: v->sz = 1;
713: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.11 kristaps 714: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 715: if (NULL == (v->value[0] = strdup(p)))
1.11 kristaps 716: return(mdoc_nerr(m, m->last, EMALLOC));
1.2 kristaps 717:
1.1 kristaps 718: return(1);
719: }
720:
721:
722: /*
723: * Determine rules for parsing arguments. Arguments can either accept
724: * no parameters, an optional single parameter, one parameter, or
725: * multiple parameters.
726: */
727: static int
728: argv(struct mdoc *mdoc, int line,
729: struct mdoc_argv *v, int *pos, char *buf)
730: {
731:
732: v->sz = 0;
733: v->value = NULL;
734:
735: switch (mdoc_argvflags[v->arg]) {
736: case (ARGV_SINGLE):
737: return(argv_single(mdoc, line, v, pos, buf));
738: case (ARGV_MULTI):
739: return(argv_multi(mdoc, line, v, pos, buf));
740: case (ARGV_OPT_SINGLE):
741: return(argv_opt_single(mdoc, line, v, pos, buf));
742: default:
743: /* ARGV_NONE */
744: break;
745: }
746:
747: return(1);
748: }
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