Annotation of mandoc/mdoc_argv.c, Revision 1.22
1.22 ! kristaps 1: /* $Id: mdoc_argv.c,v 1.21 2009/07/20 14:12:27 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:
35: #define ARGS_DELIM (1 << 1)
36: #define ARGS_TABSEP (1 << 2)
37:
38: #define ARGV_NONE (1 << 0)
39: #define ARGV_SINGLE (1 << 1)
40: #define ARGV_MULTI (1 << 2)
41: #define ARGV_OPT_SINGLE (1 << 3)
42:
43: #define MULTI_STEP 5
44:
45: static int argv_a2arg(int, const char *);
46: static int args(struct mdoc *, int, int *,
47: char *, int, char **);
48: static int argv(struct mdoc *, int,
49: struct mdoc_argv *, int *, char *);
50: static int argv_single(struct mdoc *, int,
51: struct mdoc_argv *, int *, char *);
52: static int argv_opt_single(struct mdoc *, int,
53: struct mdoc_argv *, int *, char *);
54: static int argv_multi(struct mdoc *, int,
55: struct mdoc_argv *, int *, char *);
1.2 kristaps 56:
1.1 kristaps 57: /* Per-argument flags. */
58:
59: static int mdoc_argvflags[MDOC_ARG_MAX] = {
60: ARGV_NONE, /* MDOC_Split */
61: ARGV_NONE, /* MDOC_Nosplit */
62: ARGV_NONE, /* MDOC_Ragged */
63: ARGV_NONE, /* MDOC_Unfilled */
64: ARGV_NONE, /* MDOC_Literal */
65: ARGV_NONE, /* MDOC_File */
66: ARGV_SINGLE, /* MDOC_Offset */
67: ARGV_NONE, /* MDOC_Bullet */
68: ARGV_NONE, /* MDOC_Dash */
69: ARGV_NONE, /* MDOC_Hyphen */
70: ARGV_NONE, /* MDOC_Item */
71: ARGV_NONE, /* MDOC_Enum */
72: ARGV_NONE, /* MDOC_Tag */
73: ARGV_NONE, /* MDOC_Diag */
74: ARGV_NONE, /* MDOC_Hang */
75: ARGV_NONE, /* MDOC_Ohang */
76: ARGV_NONE, /* MDOC_Inset */
77: ARGV_MULTI, /* MDOC_Column */
78: ARGV_SINGLE, /* MDOC_Width */
79: ARGV_NONE, /* MDOC_Compact */
80: ARGV_OPT_SINGLE, /* MDOC_Std */
81: ARGV_NONE, /* MDOC_Filled */
82: ARGV_NONE, /* MDOC_Words */
83: ARGV_NONE, /* MDOC_Emphasis */
84: ARGV_NONE, /* MDOC_Symbolic */
85: ARGV_NONE /* MDOC_Symbolic */
86: };
87:
88: static int mdoc_argflags[MDOC_MAX] = {
1.5 kristaps 89: 0, /* Ap */
1.1 kristaps 90: 0, /* Dd */
91: 0, /* Dt */
92: 0, /* Os */
1.17 kristaps 93: 0, /* Sh */
94: 0, /* Ss */
1.1 kristaps 95: ARGS_DELIM, /* Pp */
96: ARGS_DELIM, /* D1 */
1.17 kristaps 97: ARGS_DELIM, /* Dl */
1.1 kristaps 98: 0, /* Bd */
99: 0, /* Ed */
1.17 kristaps 100: 0, /* Bl */
1.1 kristaps 101: 0, /* El */
102: 0, /* It */
103: ARGS_DELIM, /* Ad */
104: ARGS_DELIM, /* An */
1.17 kristaps 105: ARGS_DELIM, /* Ar */
106: 0, /* Cd */
1.1 kristaps 107: ARGS_DELIM, /* Cm */
108: ARGS_DELIM, /* Dv */
109: ARGS_DELIM, /* Er */
110: ARGS_DELIM, /* Ev */
111: 0, /* Ex */
1.17 kristaps 112: ARGS_DELIM, /* Fa */
1.1 kristaps 113: 0, /* Fd */
114: ARGS_DELIM, /* Fl */
1.17 kristaps 115: ARGS_DELIM, /* Fn */
116: ARGS_DELIM, /* Ft */
1.1 kristaps 117: ARGS_DELIM, /* Ic */
118: 0, /* In */
1.17 kristaps 119: ARGS_DELIM, /* Li */
120: 0, /* Nd */
1.1 kristaps 121: ARGS_DELIM, /* Nm */
122: ARGS_DELIM, /* Op */
123: 0, /* Ot */
124: ARGS_DELIM, /* Pa */
125: 0, /* Rv */
1.15 kristaps 126: ARGS_DELIM, /* St */
1.1 kristaps 127: ARGS_DELIM, /* Va */
128: ARGS_DELIM, /* Vt */
129: ARGS_DELIM, /* Xr */
1.17 kristaps 130: 0, /* %A */
131: 0, /* %B */
132: 0, /* %D */
133: 0, /* %I */
134: 0, /* %J */
135: 0, /* %N */
136: 0, /* %O */
137: 0, /* %P */
138: 0, /* %R */
139: 0, /* %T */
140: 0, /* %V */
1.1 kristaps 141: ARGS_DELIM, /* Ac */
142: 0, /* Ao */
143: ARGS_DELIM, /* Aq */
144: ARGS_DELIM, /* At */
145: ARGS_DELIM, /* Bc */
146: 0, /* Bf */
147: 0, /* Bo */
148: ARGS_DELIM, /* Bq */
149: ARGS_DELIM, /* Bsx */
150: ARGS_DELIM, /* Bx */
151: 0, /* Db */
152: ARGS_DELIM, /* Dc */
153: 0, /* Do */
154: ARGS_DELIM, /* Dq */
155: ARGS_DELIM, /* Ec */
156: 0, /* Ef */
157: ARGS_DELIM, /* Em */
158: 0, /* Eo */
159: ARGS_DELIM, /* Fx */
160: ARGS_DELIM, /* Ms */
161: ARGS_DELIM, /* No */
162: ARGS_DELIM, /* Ns */
163: ARGS_DELIM, /* Nx */
164: ARGS_DELIM, /* Ox */
165: ARGS_DELIM, /* Pc */
166: ARGS_DELIM, /* Pf */
167: 0, /* Po */
168: ARGS_DELIM, /* Pq */
169: ARGS_DELIM, /* Qc */
170: ARGS_DELIM, /* Ql */
171: 0, /* Qo */
172: ARGS_DELIM, /* Qq */
173: 0, /* Re */
174: 0, /* Rs */
175: ARGS_DELIM, /* Sc */
176: 0, /* So */
177: ARGS_DELIM, /* Sq */
178: 0, /* Sm */
179: ARGS_DELIM, /* Sx */
1.17 kristaps 180: ARGS_DELIM, /* Sy */
1.1 kristaps 181: ARGS_DELIM, /* Tn */
182: ARGS_DELIM, /* Ux */
183: ARGS_DELIM, /* Xc */
184: 0, /* Xo */
1.17 kristaps 185: 0, /* Fo */
1.1 kristaps 186: 0, /* Fc */
187: 0, /* Oo */
188: ARGS_DELIM, /* Oc */
189: 0, /* Bk */
190: 0, /* Ek */
191: 0, /* Bt */
192: 0, /* Hf */
193: 0, /* Fr */
194: 0, /* Ud */
195: 0, /* Lb */
196: ARGS_DELIM, /* Lp */
1.17 kristaps 197: ARGS_DELIM, /* Lk */
198: ARGS_DELIM, /* Mt */
1.1 kristaps 199: ARGS_DELIM, /* Brq */
200: 0, /* Bro */
201: ARGS_DELIM, /* Brc */
1.17 kristaps 202: 0, /* %C */
1.1 kristaps 203: 0, /* Es */
204: 0, /* En */
205: 0, /* Dx */
1.17 kristaps 206: 0, /* %Q */
1.14 kristaps 207: 0, /* br */
208: 0, /* sp */
1.1 kristaps 209: };
210:
211:
212: /*
213: * Parse an argument from line text. This comes in the form of -key
214: * [value0...], which may either have a single mandatory value, at least
215: * one mandatory value, an optional single value, or no value.
216: */
217: int
1.11 kristaps 218: mdoc_argv(struct mdoc *m, int line, int tok,
1.1 kristaps 219: struct mdoc_arg **v, int *pos, char *buf)
220: {
221: char *p, sv;
222: struct mdoc_argv tmp;
223: struct mdoc_arg *arg;
224:
225: if (0 == buf[*pos])
226: return(ARGV_EOLN);
227:
228: assert(' ' != buf[*pos]);
229:
230: /* Parse through to the first unescaped space. */
231:
232: p = &buf[++(*pos)];
233:
234: assert(*pos > 0);
235:
236: /* LINTED */
237: while (buf[*pos]) {
238: if (' ' == buf[*pos])
239: if ('\\' != buf[*pos - 1])
240: break;
241: (*pos)++;
242: }
243:
244: /* XXX - save zeroed byte, if not an argument. */
245:
246: sv = 0;
247: if (buf[*pos]) {
248: sv = buf[*pos];
249: buf[(*pos)++] = 0;
250: }
251:
252: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
253: tmp.line = line;
254: tmp.pos = *pos;
255:
256: /* See if our token accepts the argument. */
257:
258: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
259: /* XXX - restore saved zeroed byte. */
260: if (sv)
261: buf[*pos - 1] = sv;
262: return(ARGV_WORD);
263: }
264:
265: while (buf[*pos] && ' ' == buf[*pos])
266: (*pos)++;
267:
1.11 kristaps 268: if ( ! argv(m, line, &tmp, pos, buf))
1.1 kristaps 269: return(ARGV_ERROR);
270:
271: if (NULL == (arg = *v)) {
1.2 kristaps 272: *v = calloc(1, sizeof(struct mdoc_arg));
273: if (NULL == *v) {
1.11 kristaps 274: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 275: return(ARGV_ERROR);
276: }
1.1 kristaps 277: arg = *v;
278: }
279:
280: arg->argc++;
1.2 kristaps 281: arg->argv = realloc(arg->argv, arg->argc *
1.1 kristaps 282: sizeof(struct mdoc_argv));
283:
1.2 kristaps 284: if (NULL == arg->argv) {
1.11 kristaps 285: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 286: return(ARGV_ERROR);
287: }
288:
1.1 kristaps 289: (void)memcpy(&arg->argv[(int)arg->argc - 1],
290: &tmp, sizeof(struct mdoc_argv));
291:
292: return(ARGV_ARG);
293: }
294:
295:
296: void
297: mdoc_argv_free(struct mdoc_arg *p)
298: {
299: int i, j;
300:
301: if (NULL == p)
302: return;
303:
304: if (p->refcnt) {
305: --(p->refcnt);
306: if (p->refcnt)
307: return;
308: }
309: assert(p->argc);
310:
311: /* LINTED */
312: for (i = 0; i < (int)p->argc; i++) {
313: if (0 == p->argv[i].sz)
314: continue;
315: /* LINTED */
316: for (j = 0; j < (int)p->argv[i].sz; j++)
317: free(p->argv[i].value[j]);
318:
319: free(p->argv[i].value);
320: }
321:
322: free(p->argv);
323: free(p);
324: }
325:
326:
327: int
1.19 kristaps 328: mdoc_zargs(struct mdoc *m, int line, int *pos, char *buf, char **v)
329: {
330:
331: return(args(m, line, pos, buf, 0, v));
332: }
333:
334:
335: int
1.11 kristaps 336: mdoc_args(struct mdoc *m, int line,
1.1 kristaps 337: int *pos, char *buf, int tok, char **v)
338: {
339: int fl, c, i;
340: struct mdoc_node *n;
341:
342: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
343:
1.17 kristaps 344: if (MDOC_It != tok)
345: return(args(m, line, pos, buf, fl, v));
346:
1.1 kristaps 347: /*
1.17 kristaps 348: * The `It' macro is a special case, as it acquires parameters from its
349: * parent `Bl' context, specifically, we're concerned with -column.
1.1 kristaps 350: */
351:
1.17 kristaps 352: for (n = m->last; n; n = n->parent)
353: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
354: break;
1.1 kristaps 355:
1.17 kristaps 356: assert(n);
357: c = (int)(n->args ? n->args->argc : 0);
358: assert(c > 0);
1.1 kristaps 359:
1.17 kristaps 360: /* LINTED */
361: for (i = 0; i < c; i++) {
362: if (MDOC_Column != n->args->argv[i].arg)
363: continue;
364: fl |= ARGS_TABSEP;
365: fl &= ~ARGS_DELIM;
1.1 kristaps 366: break;
367: }
368:
1.11 kristaps 369: return(args(m, line, pos, buf, fl, v));
1.1 kristaps 370: }
371:
372:
373: static int
1.13 kristaps 374: args(struct mdoc *m, int line, int *pos,
375: char *buf, int fl, char **v)
1.1 kristaps 376: {
1.21 kristaps 377: int i;
1.1 kristaps 378: char *p, *pp;
379:
1.17 kristaps 380: assert(*pos);
381: assert(' ' != buf[*pos]);
1.1 kristaps 382:
383: if (0 == buf[*pos])
384: return(ARGS_EOLN);
385:
386: /*
387: * If the first character is a delimiter and we're to look for
388: * delimited strings, then pass down the buffer seeing if it
389: * follows the pattern of [[::delim::][ ]+]+.
390: */
391:
392: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
393: for (i = *pos; buf[i]; ) {
394: if ( ! mdoc_iscdelim(buf[i]))
395: break;
396: i++;
397: if (0 == buf[i] || ' ' != buf[i])
398: break;
399: i++;
400: while (buf[i] && ' ' == buf[i])
401: i++;
402: }
1.17 kristaps 403:
404: /* FIXME: warn about trailing whitespace. */
405:
1.1 kristaps 406: if (0 == buf[i]) {
407: *v = &buf[*pos];
408: return(ARGS_PUNCT);
409: }
410: }
411:
1.17 kristaps 412: *v = &buf[*pos];
1.1 kristaps 413:
1.17 kristaps 414: /*
415: * First handle TABSEP items, restricted to `Bl -column'. This
416: * ignores conventional token parsing and instead uses tabs or
417: * `Ta' macros to separate phrases. Phrases are parsed again
418: * for arguments at a later phase.
419: */
1.1 kristaps 420:
1.17 kristaps 421: if (ARGS_TABSEP & fl) {
1.20 kristaps 422: /* Scan ahead to tab (can't be escaped). */
1.17 kristaps 423: p = strchr(*v, '\t');
424:
425: /* Scan ahead to unescaped `Ta'. */
426: for (pp = *v; ; pp++) {
427: if (NULL == (pp = strstr(pp, "Ta")))
428: break;
429: if (pp > *v && ' ' != *(pp - 1))
430: continue;
431: if (' ' == *(pp + 2) || 0 == *(pp + 2))
432: break;
433: }
434:
1.21 kristaps 435: /*
436: * Adjust new-buffer position to be beyond delimiter
437: * mark (e.g., Ta -> end + 2).
438: */
1.20 kristaps 439: if (p && pp) {
440: *pos += pp < p ? 2 : 1;
441: p = pp < p ? pp : p;
442: } else if (p && ! pp) {
443: *pos += 1;
444: } else if (pp && ! p) {
1.17 kristaps 445: p = pp;
1.20 kristaps 446: *pos += 2;
447: } else
448: p = strchr(*v, 0);
449:
1.21 kristaps 450: /* Whitespace check for eoln case... */
1.20 kristaps 451: if (0 == *p && ' ' == *(p - 1))
452: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
453: return(ARGS_ERROR);
454:
455: *pos += (int)(p - *v);
1.17 kristaps 456:
457: /* Strip delimiter's preceding whitespace. */
1.20 kristaps 458: pp = p - 1;
459: while (pp > *v && ' ' == *pp) {
460: if (pp > *v && '\\' == *(pp - 1))
461: break;
462: pp--;
1.17 kristaps 463: }
1.20 kristaps 464: *(pp + 1) = 0;
1.17 kristaps 465:
1.20 kristaps 466: /* Strip delimiter's proceeding whitespace. */
467: for (pp = &buf[*pos]; ' ' == *pp; pp++, (*pos)++)
468: /* Skip ahead. */ ;
1.1 kristaps 469:
1.17 kristaps 470: return(ARGS_PHRASE);
471: }
1.1 kristaps 472:
1.17 kristaps 473: /*
474: * Process a quoted literal. A quote begins with a double-quote
475: * and ends with a double-quote NOT preceded by a double-quote.
476: * Whitespace is NOT involved in literal termination.
477: */
1.1 kristaps 478:
1.17 kristaps 479: if ('\"' == buf[*pos]) {
480: *v = &buf[++(*pos)];
1.1 kristaps 481:
1.17 kristaps 482: for ( ; buf[*pos]; (*pos)++) {
483: if ('\"' != buf[*pos])
484: continue;
485: if ('\"' != buf[*pos + 1])
486: break;
487: (*pos)++;
488: }
1.1 kristaps 489:
1.17 kristaps 490: if (0 == buf[*pos]) {
1.18 kristaps 491: if ( ! mdoc_pwarn(m, line, *pos, EQUOTTERM))
492: return(ARGS_ERROR);
493: return(ARGS_QWORD);
1.17 kristaps 494: }
1.1 kristaps 495:
496: buf[(*pos)++] = 0;
497:
498: if (0 == buf[*pos])
1.17 kristaps 499: return(ARGS_QWORD);
1.1 kristaps 500:
1.17 kristaps 501: while (' ' == buf[*pos])
502: (*pos)++;
1.1 kristaps 503:
1.17 kristaps 504: if (0 == buf[*pos])
505: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
506: return(ARGS_ERROR);
1.1 kristaps 507:
1.17 kristaps 508: return(ARGS_QWORD);
1.1 kristaps 509: }
510:
1.17 kristaps 511: /*
512: * A non-quoted term progresses until either the end of line or
513: * a non-escaped whitespace.
1.1 kristaps 514: */
515:
1.17 kristaps 516: for ( ; buf[*pos]; (*pos)++)
517: if (' ' == buf[*pos] && '\\' != buf[*pos - 1])
518: break;
1.1 kristaps 519:
1.17 kristaps 520: if (0 == buf[*pos])
521: return(ARGS_WORD);
1.1 kristaps 522:
523: buf[(*pos)++] = 0;
524:
1.17 kristaps 525: while (' ' == buf[*pos])
1.1 kristaps 526: (*pos)++;
527:
1.17 kristaps 528: if (0 == buf[*pos])
529: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
530: return(ARGS_ERROR);
1.1 kristaps 531:
1.17 kristaps 532: return(ARGS_WORD);
1.1 kristaps 533: }
534:
535:
536: static int
537: argv_a2arg(int tok, const char *argv)
538: {
539:
540: /*
541: * Parse an argument identifier from its text. XXX - this
542: * should really be table-driven to clarify the code.
543: *
544: * If you add an argument to the list, make sure that you
545: * register it here with its one or more macros!
546: */
547:
548: switch (tok) {
549: case (MDOC_An):
1.2 kristaps 550: if (0 == strcmp(argv, "split"))
1.1 kristaps 551: return(MDOC_Split);
1.2 kristaps 552: else if (0 == strcmp(argv, "nosplit"))
1.1 kristaps 553: return(MDOC_Nosplit);
554: break;
555:
556: case (MDOC_Bd):
1.2 kristaps 557: if (0 == strcmp(argv, "ragged"))
1.1 kristaps 558: return(MDOC_Ragged);
1.2 kristaps 559: else if (0 == strcmp(argv, "unfilled"))
1.1 kristaps 560: return(MDOC_Unfilled);
1.2 kristaps 561: else if (0 == strcmp(argv, "filled"))
1.1 kristaps 562: return(MDOC_Filled);
1.2 kristaps 563: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 564: return(MDOC_Literal);
1.2 kristaps 565: else if (0 == strcmp(argv, "file"))
1.1 kristaps 566: return(MDOC_File);
1.2 kristaps 567: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 568: return(MDOC_Offset);
1.2 kristaps 569: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 570: return(MDOC_Compact);
571: break;
572:
573: case (MDOC_Bf):
1.2 kristaps 574: if (0 == strcmp(argv, "emphasis"))
1.1 kristaps 575: return(MDOC_Emphasis);
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, "symbolic"))
1.1 kristaps 579: return(MDOC_Symbolic);
580: break;
581:
582: case (MDOC_Bk):
1.2 kristaps 583: if (0 == strcmp(argv, "words"))
1.1 kristaps 584: return(MDOC_Words);
585: break;
586:
587: case (MDOC_Bl):
1.2 kristaps 588: if (0 == strcmp(argv, "bullet"))
1.1 kristaps 589: return(MDOC_Bullet);
1.2 kristaps 590: else if (0 == strcmp(argv, "dash"))
1.1 kristaps 591: return(MDOC_Dash);
1.2 kristaps 592: else if (0 == strcmp(argv, "hyphen"))
1.1 kristaps 593: return(MDOC_Hyphen);
1.2 kristaps 594: else if (0 == strcmp(argv, "item"))
1.1 kristaps 595: return(MDOC_Item);
1.2 kristaps 596: else if (0 == strcmp(argv, "enum"))
1.1 kristaps 597: return(MDOC_Enum);
1.2 kristaps 598: else if (0 == strcmp(argv, "tag"))
1.1 kristaps 599: return(MDOC_Tag);
1.2 kristaps 600: else if (0 == strcmp(argv, "diag"))
1.1 kristaps 601: return(MDOC_Diag);
1.2 kristaps 602: else if (0 == strcmp(argv, "hang"))
1.1 kristaps 603: return(MDOC_Hang);
1.2 kristaps 604: else if (0 == strcmp(argv, "ohang"))
1.1 kristaps 605: return(MDOC_Ohang);
1.2 kristaps 606: else if (0 == strcmp(argv, "inset"))
1.1 kristaps 607: return(MDOC_Inset);
1.2 kristaps 608: else if (0 == strcmp(argv, "column"))
1.1 kristaps 609: return(MDOC_Column);
1.2 kristaps 610: else if (0 == strcmp(argv, "width"))
1.1 kristaps 611: return(MDOC_Width);
1.2 kristaps 612: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 613: return(MDOC_Offset);
1.2 kristaps 614: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 615: return(MDOC_Compact);
1.2 kristaps 616: else if (0 == strcmp(argv, "nested"))
1.1 kristaps 617: return(MDOC_Nested);
618: break;
619:
620: case (MDOC_Rv):
621: /* FALLTHROUGH */
622: case (MDOC_Ex):
1.2 kristaps 623: if (0 == strcmp(argv, "std"))
1.1 kristaps 624: return(MDOC_Std);
625: break;
626: default:
627: break;
628: }
629:
630: return(MDOC_ARG_MAX);
631: }
632:
633:
634: static int
1.11 kristaps 635: argv_multi(struct mdoc *m, int line,
1.1 kristaps 636: struct mdoc_argv *v, int *pos, char *buf)
637: {
1.8 kristaps 638: int c;
1.1 kristaps 639: char *p;
640:
641: for (v->sz = 0; ; v->sz++) {
642: if ('-' == buf[*pos])
643: break;
1.17 kristaps 644: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 645: if (ARGS_ERROR == c)
646: return(0);
647: else if (ARGS_EOLN == c)
648: break;
649:
1.2 kristaps 650: if (0 == v->sz % MULTI_STEP) {
651: v->value = realloc(v->value,
1.1 kristaps 652: (v->sz + MULTI_STEP) * sizeof(char *));
1.2 kristaps 653: if (NULL == v->value) {
1.11 kristaps 654: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 655: return(ARGV_ERROR);
656: }
657: }
1.1 kristaps 658: if (NULL == (v->value[(int)v->sz] = strdup(p)))
1.11 kristaps 659: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 660: }
661:
1.7 kristaps 662: return(1);
1.1 kristaps 663: }
664:
665:
666: static int
1.11 kristaps 667: argv_opt_single(struct mdoc *m, int line,
1.1 kristaps 668: struct mdoc_argv *v, int *pos, char *buf)
669: {
670: int c;
671: char *p;
672:
673: if ('-' == buf[*pos])
674: return(1);
675:
1.17 kristaps 676: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 677: if (ARGS_ERROR == c)
678: return(0);
679: if (ARGS_EOLN == c)
680: return(1);
681:
682: v->sz = 1;
683: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.11 kristaps 684: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 685: if (NULL == (v->value[0] = strdup(p)))
1.11 kristaps 686: return(mdoc_nerr(m, m->last, EMALLOC));
1.2 kristaps 687:
1.1 kristaps 688: return(1);
689: }
690:
691:
692: /*
693: * Parse a single, mandatory value from the stream.
694: */
695: static int
1.11 kristaps 696: argv_single(struct mdoc *m, int line,
1.1 kristaps 697: struct mdoc_argv *v, int *pos, char *buf)
698: {
699: int c, ppos;
700: char *p;
701:
702: ppos = *pos;
703:
1.17 kristaps 704: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 705: if (ARGS_ERROR == c)
706: return(0);
707: if (ARGS_EOLN == c)
1.11 kristaps 708: return(mdoc_perr(m, line, ppos, EARGVAL));
1.1 kristaps 709:
710: v->sz = 1;
711: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.11 kristaps 712: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 713: if (NULL == (v->value[0] = strdup(p)))
1.11 kristaps 714: return(mdoc_nerr(m, m->last, EMALLOC));
1.2 kristaps 715:
1.1 kristaps 716: return(1);
717: }
718:
719:
720: /*
721: * Determine rules for parsing arguments. Arguments can either accept
722: * no parameters, an optional single parameter, one parameter, or
723: * multiple parameters.
724: */
725: static int
726: argv(struct mdoc *mdoc, int line,
727: struct mdoc_argv *v, int *pos, char *buf)
728: {
729:
730: v->sz = 0;
731: v->value = NULL;
732:
733: switch (mdoc_argvflags[v->arg]) {
734: case (ARGV_SINGLE):
735: return(argv_single(mdoc, line, v, pos, buf));
736: case (ARGV_MULTI):
737: return(argv_multi(mdoc, line, v, pos, buf));
738: case (ARGV_OPT_SINGLE):
739: return(argv_opt_single(mdoc, line, v, pos, buf));
740: default:
741: /* ARGV_NONE */
742: break;
743: }
744:
745: return(1);
746: }
CVSweb