Annotation of mandoc/mdoc_argv.c, Revision 1.18
1.18 ! kristaps 1: /* $Id: mdoc_argv.c,v 1.17 2009/07/18 18:49:19 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
1.11 kristaps 330: mdoc_args(struct mdoc *m, int line,
1.1 kristaps 331: int *pos, char *buf, int tok, char **v)
332: {
333: int fl, c, i;
334: struct mdoc_node *n;
335:
336: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
337:
1.17 kristaps 338: if (MDOC_It != tok)
339: return(args(m, line, pos, buf, fl, v));
340:
1.1 kristaps 341: /*
1.17 kristaps 342: * The `It' macro is a special case, as it acquires parameters from its
343: * parent `Bl' context, specifically, we're concerned with -column.
1.1 kristaps 344: */
345:
1.17 kristaps 346: for (n = m->last; n; n = n->parent)
347: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
348: break;
1.1 kristaps 349:
1.17 kristaps 350: assert(n);
351: c = (int)(n->args ? n->args->argc : 0);
352: assert(c > 0);
1.1 kristaps 353:
1.17 kristaps 354: /* LINTED */
355: for (i = 0; i < c; i++) {
356: if (MDOC_Column != n->args->argv[i].arg)
357: continue;
358: fl |= ARGS_TABSEP;
359: fl &= ~ARGS_DELIM;
1.1 kristaps 360: break;
361: }
362:
1.11 kristaps 363: return(args(m, line, pos, buf, fl, v));
1.1 kristaps 364: }
365:
366:
367: static int
1.13 kristaps 368: args(struct mdoc *m, int line, int *pos,
369: char *buf, int fl, char **v)
1.1 kristaps 370: {
371: int i;
372: char *p, *pp;
373:
1.17 kristaps 374: assert(*pos);
375: assert(' ' != buf[*pos]);
1.1 kristaps 376:
377: if (0 == buf[*pos])
378: return(ARGS_EOLN);
379:
380: /*
381: * If the first character is a delimiter and we're to look for
382: * delimited strings, then pass down the buffer seeing if it
383: * follows the pattern of [[::delim::][ ]+]+.
384: */
385:
386: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
387: for (i = *pos; buf[i]; ) {
388: if ( ! mdoc_iscdelim(buf[i]))
389: break;
390: i++;
391: if (0 == buf[i] || ' ' != buf[i])
392: break;
393: i++;
394: while (buf[i] && ' ' == buf[i])
395: i++;
396: }
1.17 kristaps 397:
398: /* FIXME: warn about trailing whitespace. */
399:
1.1 kristaps 400: if (0 == buf[i]) {
401: *v = &buf[*pos];
402: return(ARGS_PUNCT);
403: }
404: }
405:
1.17 kristaps 406: *v = &buf[*pos];
1.1 kristaps 407:
1.17 kristaps 408: /*
409: * First handle TABSEP items, restricted to `Bl -column'. This
410: * ignores conventional token parsing and instead uses tabs or
411: * `Ta' macros to separate phrases. Phrases are parsed again
412: * for arguments at a later phase.
413: */
1.1 kristaps 414:
1.17 kristaps 415: if (ARGS_TABSEP & fl) {
416: /* Scan ahead to unescaped tab. */
417: p = strchr(*v, '\t');
418:
419: /* Scan ahead to unescaped `Ta'. */
420: for (pp = *v; ; pp++) {
421: if (NULL == (pp = strstr(pp, "Ta")))
422: break;
423: if (pp > *v && ' ' != *(pp - 1))
424: continue;
425: if (' ' == *(pp + 2) || 0 == *(pp + 2))
426: break;
427: }
428:
429: /* Choose delimiter tab/Ta. */
430: if (p && pp)
431: p = (p < pp ? p : pp);
432: else if ( ! p && pp)
433: p = pp;
434:
435: /* Strip delimiter's preceding whitespace. */
436: /* FIXME: escaped whitespace? */
437: if (p && p > *v) {
438: pp = p - 1;
439: while (pp > *v && ' ' == *pp)
440: pp--;
441: if (pp == *v && ' ' == *pp)
442: *pp = 0;
443: else if (' ' == *pp)
444: *(pp + 1) = 0;
445: }
446:
447: /* ...in- and proceding whitespace. */
448: if (p && ('\t' != *p)) {
449: *p++ = 0;
450: *p++ = 0;
451: } else if (p)
452: *p++ = 0;
453:
454: if (p) {
455: while (' ' == *p)
456: p++;
457: if (0 != *p)
458: *(p - 1) = 0;
459: *pos += (int)(p - *v);
460: }
461:
462: /* Some warnings, if applicable. */
463: if (p && 0 == *p)
464: if ( ! mdoc_pwarn(m, line, *pos, ECOLEMPTY))
465: return(ARGS_ERROR);
466: if (p && 0 == *p && p > *v && ' ' == *(p - 1))
467: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
468: return(ARGS_ERROR);
469:
470: /* Non-eoln case returns now. */
471: if (p)
472: return(ARGS_PHRASE);
1.1 kristaps 473:
1.17 kristaps 474: /* Configure the eoln case, too. */
475: p = strchr(*v, 0);
476: assert(p);
477:
478: if (p > *v && ' ' == *(p - 1))
479: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
480: return(ARGS_ERROR);
481: *pos += (int)(p - *v);
1.1 kristaps 482:
1.17 kristaps 483: return(ARGS_PHRASE);
484: }
1.1 kristaps 485:
1.17 kristaps 486: /*
487: * Process a quoted literal. A quote begins with a double-quote
488: * and ends with a double-quote NOT preceded by a double-quote.
489: * Whitespace is NOT involved in literal termination.
490: */
1.1 kristaps 491:
1.17 kristaps 492: if ('\"' == buf[*pos]) {
493: *v = &buf[++(*pos)];
1.1 kristaps 494:
1.17 kristaps 495: for ( ; buf[*pos]; (*pos)++) {
496: if ('\"' != buf[*pos])
497: continue;
498: if ('\"' != buf[*pos + 1])
499: break;
500: (*pos)++;
501: }
1.1 kristaps 502:
1.17 kristaps 503: if (0 == buf[*pos]) {
1.18 ! kristaps 504: if ( ! mdoc_pwarn(m, line, *pos, EQUOTTERM))
! 505: return(ARGS_ERROR);
! 506: return(ARGS_QWORD);
1.17 kristaps 507: }
1.1 kristaps 508:
509: buf[(*pos)++] = 0;
510:
511: if (0 == buf[*pos])
1.17 kristaps 512: return(ARGS_QWORD);
1.1 kristaps 513:
1.17 kristaps 514: while (' ' == buf[*pos])
515: (*pos)++;
1.1 kristaps 516:
1.17 kristaps 517: if (0 == buf[*pos])
518: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
519: return(ARGS_ERROR);
1.1 kristaps 520:
1.17 kristaps 521: return(ARGS_QWORD);
1.1 kristaps 522: }
523:
1.17 kristaps 524: /*
525: * A non-quoted term progresses until either the end of line or
526: * a non-escaped whitespace.
1.1 kristaps 527: */
528:
1.17 kristaps 529: for ( ; buf[*pos]; (*pos)++)
530: if (' ' == buf[*pos] && '\\' != buf[*pos - 1])
531: break;
1.1 kristaps 532:
1.17 kristaps 533: if (0 == buf[*pos])
534: return(ARGS_WORD);
1.1 kristaps 535:
536: buf[(*pos)++] = 0;
537:
1.17 kristaps 538: while (' ' == buf[*pos])
1.1 kristaps 539: (*pos)++;
540:
1.17 kristaps 541: if (0 == buf[*pos])
542: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
543: return(ARGS_ERROR);
1.1 kristaps 544:
1.17 kristaps 545: return(ARGS_WORD);
1.1 kristaps 546: }
547:
548:
549: static int
550: argv_a2arg(int tok, const char *argv)
551: {
552:
553: /*
554: * Parse an argument identifier from its text. XXX - this
555: * should really be table-driven to clarify the code.
556: *
557: * If you add an argument to the list, make sure that you
558: * register it here with its one or more macros!
559: */
560:
561: switch (tok) {
562: case (MDOC_An):
1.2 kristaps 563: if (0 == strcmp(argv, "split"))
1.1 kristaps 564: return(MDOC_Split);
1.2 kristaps 565: else if (0 == strcmp(argv, "nosplit"))
1.1 kristaps 566: return(MDOC_Nosplit);
567: break;
568:
569: case (MDOC_Bd):
1.2 kristaps 570: if (0 == strcmp(argv, "ragged"))
1.1 kristaps 571: return(MDOC_Ragged);
1.2 kristaps 572: else if (0 == strcmp(argv, "unfilled"))
1.1 kristaps 573: return(MDOC_Unfilled);
1.2 kristaps 574: else if (0 == strcmp(argv, "filled"))
1.1 kristaps 575: return(MDOC_Filled);
1.2 kristaps 576: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 577: return(MDOC_Literal);
1.2 kristaps 578: else if (0 == strcmp(argv, "file"))
1.1 kristaps 579: return(MDOC_File);
1.2 kristaps 580: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 581: return(MDOC_Offset);
1.2 kristaps 582: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 583: return(MDOC_Compact);
584: break;
585:
586: case (MDOC_Bf):
1.2 kristaps 587: if (0 == strcmp(argv, "emphasis"))
1.1 kristaps 588: return(MDOC_Emphasis);
1.2 kristaps 589: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 590: return(MDOC_Literal);
1.2 kristaps 591: else if (0 == strcmp(argv, "symbolic"))
1.1 kristaps 592: return(MDOC_Symbolic);
593: break;
594:
595: case (MDOC_Bk):
1.2 kristaps 596: if (0 == strcmp(argv, "words"))
1.1 kristaps 597: return(MDOC_Words);
598: break;
599:
600: case (MDOC_Bl):
1.2 kristaps 601: if (0 == strcmp(argv, "bullet"))
1.1 kristaps 602: return(MDOC_Bullet);
1.2 kristaps 603: else if (0 == strcmp(argv, "dash"))
1.1 kristaps 604: return(MDOC_Dash);
1.2 kristaps 605: else if (0 == strcmp(argv, "hyphen"))
1.1 kristaps 606: return(MDOC_Hyphen);
1.2 kristaps 607: else if (0 == strcmp(argv, "item"))
1.1 kristaps 608: return(MDOC_Item);
1.2 kristaps 609: else if (0 == strcmp(argv, "enum"))
1.1 kristaps 610: return(MDOC_Enum);
1.2 kristaps 611: else if (0 == strcmp(argv, "tag"))
1.1 kristaps 612: return(MDOC_Tag);
1.2 kristaps 613: else if (0 == strcmp(argv, "diag"))
1.1 kristaps 614: return(MDOC_Diag);
1.2 kristaps 615: else if (0 == strcmp(argv, "hang"))
1.1 kristaps 616: return(MDOC_Hang);
1.2 kristaps 617: else if (0 == strcmp(argv, "ohang"))
1.1 kristaps 618: return(MDOC_Ohang);
1.2 kristaps 619: else if (0 == strcmp(argv, "inset"))
1.1 kristaps 620: return(MDOC_Inset);
1.2 kristaps 621: else if (0 == strcmp(argv, "column"))
1.1 kristaps 622: return(MDOC_Column);
1.2 kristaps 623: else if (0 == strcmp(argv, "width"))
1.1 kristaps 624: return(MDOC_Width);
1.2 kristaps 625: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 626: return(MDOC_Offset);
1.2 kristaps 627: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 628: return(MDOC_Compact);
1.2 kristaps 629: else if (0 == strcmp(argv, "nested"))
1.1 kristaps 630: return(MDOC_Nested);
631: break;
632:
633: case (MDOC_Rv):
634: /* FALLTHROUGH */
635: case (MDOC_Ex):
1.2 kristaps 636: if (0 == strcmp(argv, "std"))
1.1 kristaps 637: return(MDOC_Std);
638: break;
639: default:
640: break;
641: }
642:
643: return(MDOC_ARG_MAX);
644: }
645:
646:
647: static int
1.11 kristaps 648: argv_multi(struct mdoc *m, int line,
1.1 kristaps 649: struct mdoc_argv *v, int *pos, char *buf)
650: {
1.8 kristaps 651: int c;
1.1 kristaps 652: char *p;
653:
654: for (v->sz = 0; ; v->sz++) {
655: if ('-' == buf[*pos])
656: break;
1.17 kristaps 657: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 658: if (ARGS_ERROR == c)
659: return(0);
660: else if (ARGS_EOLN == c)
661: break;
662:
1.2 kristaps 663: if (0 == v->sz % MULTI_STEP) {
664: v->value = realloc(v->value,
1.1 kristaps 665: (v->sz + MULTI_STEP) * sizeof(char *));
1.2 kristaps 666: if (NULL == v->value) {
1.11 kristaps 667: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 668: return(ARGV_ERROR);
669: }
670: }
1.1 kristaps 671: if (NULL == (v->value[(int)v->sz] = strdup(p)))
1.11 kristaps 672: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 673: }
674:
1.7 kristaps 675: return(1);
1.1 kristaps 676: }
677:
678:
679: static int
1.11 kristaps 680: argv_opt_single(struct mdoc *m, int line,
1.1 kristaps 681: struct mdoc_argv *v, int *pos, char *buf)
682: {
683: int c;
684: char *p;
685:
686: if ('-' == buf[*pos])
687: return(1);
688:
1.17 kristaps 689: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 690: if (ARGS_ERROR == c)
691: return(0);
692: if (ARGS_EOLN == c)
693: return(1);
694:
695: v->sz = 1;
696: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.11 kristaps 697: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 698: if (NULL == (v->value[0] = strdup(p)))
1.11 kristaps 699: return(mdoc_nerr(m, m->last, EMALLOC));
1.2 kristaps 700:
1.1 kristaps 701: return(1);
702: }
703:
704:
705: /*
706: * Parse a single, mandatory value from the stream.
707: */
708: static int
1.11 kristaps 709: argv_single(struct mdoc *m, int line,
1.1 kristaps 710: struct mdoc_argv *v, int *pos, char *buf)
711: {
712: int c, ppos;
713: char *p;
714:
715: ppos = *pos;
716:
1.17 kristaps 717: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 718: if (ARGS_ERROR == c)
719: return(0);
720: if (ARGS_EOLN == c)
1.11 kristaps 721: return(mdoc_perr(m, line, ppos, EARGVAL));
1.1 kristaps 722:
723: v->sz = 1;
724: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.11 kristaps 725: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 726: if (NULL == (v->value[0] = strdup(p)))
1.11 kristaps 727: return(mdoc_nerr(m, m->last, EMALLOC));
1.2 kristaps 728:
1.1 kristaps 729: return(1);
730: }
731:
732:
733: /*
734: * Determine rules for parsing arguments. Arguments can either accept
735: * no parameters, an optional single parameter, one parameter, or
736: * multiple parameters.
737: */
738: static int
739: argv(struct mdoc *mdoc, int line,
740: struct mdoc_argv *v, int *pos, char *buf)
741: {
742:
743: v->sz = 0;
744: v->value = NULL;
745:
746: switch (mdoc_argvflags[v->arg]) {
747: case (ARGV_SINGLE):
748: return(argv_single(mdoc, line, v, pos, buf));
749: case (ARGV_MULTI):
750: return(argv_multi(mdoc, line, v, pos, buf));
751: case (ARGV_OPT_SINGLE):
752: return(argv_opt_single(mdoc, line, v, pos, buf));
753: default:
754: /* ARGV_NONE */
755: break;
756: }
757:
758: return(1);
759: }
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