Annotation of mandoc/mdoc_argv.c, Revision 1.24
1.24 ! kristaps 1: /* $Id: mdoc_argv.c,v 1.23 2009/08/20 08:59:12 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 ARGV_NONE (1 << 0)
36: #define ARGV_SINGLE (1 << 1)
37: #define ARGV_MULTI (1 << 2)
38: #define ARGV_OPT_SINGLE (1 << 3)
39:
40: #define MULTI_STEP 5
41:
42: static int argv_a2arg(int, const char *);
43: static int args(struct mdoc *, int, int *,
44: char *, int, char **);
45: static int argv(struct mdoc *, int,
46: struct mdoc_argv *, int *, char *);
47: static int argv_single(struct mdoc *, int,
48: struct mdoc_argv *, int *, char *);
49: static int argv_opt_single(struct mdoc *, int,
50: struct mdoc_argv *, int *, char *);
51: static int argv_multi(struct mdoc *, int,
52: struct mdoc_argv *, int *, char *);
1.2 kristaps 53:
1.1 kristaps 54: /* Per-argument flags. */
55:
56: static int mdoc_argvflags[MDOC_ARG_MAX] = {
57: ARGV_NONE, /* MDOC_Split */
58: ARGV_NONE, /* MDOC_Nosplit */
59: ARGV_NONE, /* MDOC_Ragged */
60: ARGV_NONE, /* MDOC_Unfilled */
61: ARGV_NONE, /* MDOC_Literal */
62: ARGV_NONE, /* MDOC_File */
63: ARGV_SINGLE, /* MDOC_Offset */
64: ARGV_NONE, /* MDOC_Bullet */
65: ARGV_NONE, /* MDOC_Dash */
66: ARGV_NONE, /* MDOC_Hyphen */
67: ARGV_NONE, /* MDOC_Item */
68: ARGV_NONE, /* MDOC_Enum */
69: ARGV_NONE, /* MDOC_Tag */
70: ARGV_NONE, /* MDOC_Diag */
71: ARGV_NONE, /* MDOC_Hang */
72: ARGV_NONE, /* MDOC_Ohang */
73: ARGV_NONE, /* MDOC_Inset */
74: ARGV_MULTI, /* MDOC_Column */
75: ARGV_SINGLE, /* MDOC_Width */
76: ARGV_NONE, /* MDOC_Compact */
77: ARGV_OPT_SINGLE, /* MDOC_Std */
78: ARGV_NONE, /* MDOC_Filled */
79: ARGV_NONE, /* MDOC_Words */
80: ARGV_NONE, /* MDOC_Emphasis */
81: ARGV_NONE, /* MDOC_Symbolic */
82: ARGV_NONE /* MDOC_Symbolic */
83: };
84:
85: static int mdoc_argflags[MDOC_MAX] = {
1.5 kristaps 86: 0, /* Ap */
1.1 kristaps 87: 0, /* Dd */
88: 0, /* Dt */
89: 0, /* Os */
1.17 kristaps 90: 0, /* Sh */
91: 0, /* Ss */
1.1 kristaps 92: ARGS_DELIM, /* Pp */
93: ARGS_DELIM, /* D1 */
1.17 kristaps 94: ARGS_DELIM, /* Dl */
1.1 kristaps 95: 0, /* Bd */
96: 0, /* Ed */
1.17 kristaps 97: 0, /* Bl */
1.1 kristaps 98: 0, /* El */
99: 0, /* It */
100: ARGS_DELIM, /* Ad */
101: ARGS_DELIM, /* An */
1.17 kristaps 102: ARGS_DELIM, /* Ar */
103: 0, /* Cd */
1.1 kristaps 104: ARGS_DELIM, /* Cm */
105: ARGS_DELIM, /* Dv */
106: ARGS_DELIM, /* Er */
107: ARGS_DELIM, /* Ev */
108: 0, /* Ex */
1.17 kristaps 109: ARGS_DELIM, /* Fa */
1.1 kristaps 110: 0, /* Fd */
111: ARGS_DELIM, /* Fl */
1.17 kristaps 112: ARGS_DELIM, /* Fn */
113: ARGS_DELIM, /* Ft */
1.1 kristaps 114: ARGS_DELIM, /* Ic */
115: 0, /* In */
1.17 kristaps 116: ARGS_DELIM, /* Li */
117: 0, /* Nd */
1.1 kristaps 118: ARGS_DELIM, /* Nm */
119: ARGS_DELIM, /* Op */
120: 0, /* Ot */
121: ARGS_DELIM, /* Pa */
122: 0, /* Rv */
1.15 kristaps 123: ARGS_DELIM, /* St */
1.1 kristaps 124: ARGS_DELIM, /* Va */
125: ARGS_DELIM, /* Vt */
126: ARGS_DELIM, /* Xr */
1.17 kristaps 127: 0, /* %A */
128: 0, /* %B */
129: 0, /* %D */
130: 0, /* %I */
131: 0, /* %J */
132: 0, /* %N */
133: 0, /* %O */
134: 0, /* %P */
135: 0, /* %R */
136: 0, /* %T */
137: 0, /* %V */
1.1 kristaps 138: ARGS_DELIM, /* Ac */
139: 0, /* Ao */
140: ARGS_DELIM, /* Aq */
141: ARGS_DELIM, /* At */
142: ARGS_DELIM, /* Bc */
143: 0, /* Bf */
144: 0, /* Bo */
145: ARGS_DELIM, /* Bq */
146: ARGS_DELIM, /* Bsx */
147: ARGS_DELIM, /* Bx */
148: 0, /* Db */
149: ARGS_DELIM, /* Dc */
150: 0, /* Do */
151: ARGS_DELIM, /* Dq */
152: ARGS_DELIM, /* Ec */
153: 0, /* Ef */
154: ARGS_DELIM, /* Em */
155: 0, /* Eo */
156: ARGS_DELIM, /* Fx */
157: ARGS_DELIM, /* Ms */
158: ARGS_DELIM, /* No */
159: ARGS_DELIM, /* Ns */
160: ARGS_DELIM, /* Nx */
161: ARGS_DELIM, /* Ox */
162: ARGS_DELIM, /* Pc */
163: ARGS_DELIM, /* Pf */
164: 0, /* Po */
165: ARGS_DELIM, /* Pq */
166: ARGS_DELIM, /* Qc */
167: ARGS_DELIM, /* Ql */
168: 0, /* Qo */
169: ARGS_DELIM, /* Qq */
170: 0, /* Re */
171: 0, /* Rs */
172: ARGS_DELIM, /* Sc */
173: 0, /* So */
174: ARGS_DELIM, /* Sq */
175: 0, /* Sm */
176: ARGS_DELIM, /* Sx */
1.17 kristaps 177: ARGS_DELIM, /* Sy */
1.1 kristaps 178: ARGS_DELIM, /* Tn */
179: ARGS_DELIM, /* Ux */
180: ARGS_DELIM, /* Xc */
181: 0, /* Xo */
1.17 kristaps 182: 0, /* Fo */
1.1 kristaps 183: 0, /* Fc */
184: 0, /* Oo */
185: ARGS_DELIM, /* Oc */
186: 0, /* Bk */
187: 0, /* Ek */
188: 0, /* Bt */
189: 0, /* Hf */
190: 0, /* Fr */
191: 0, /* Ud */
192: 0, /* Lb */
193: ARGS_DELIM, /* Lp */
1.17 kristaps 194: ARGS_DELIM, /* Lk */
195: ARGS_DELIM, /* Mt */
1.1 kristaps 196: ARGS_DELIM, /* Brq */
197: 0, /* Bro */
198: ARGS_DELIM, /* Brc */
1.17 kristaps 199: 0, /* %C */
1.1 kristaps 200: 0, /* Es */
201: 0, /* En */
202: 0, /* Dx */
1.17 kristaps 203: 0, /* %Q */
1.14 kristaps 204: 0, /* br */
205: 0, /* sp */
1.1 kristaps 206: };
207:
208:
209: /*
210: * Parse an argument from line text. This comes in the form of -key
211: * [value0...], which may either have a single mandatory value, at least
212: * one mandatory value, an optional single value, or no value.
213: */
214: int
1.11 kristaps 215: mdoc_argv(struct mdoc *m, int line, int tok,
1.1 kristaps 216: struct mdoc_arg **v, int *pos, char *buf)
217: {
218: char *p, sv;
219: struct mdoc_argv tmp;
220: struct mdoc_arg *arg;
221:
222: if (0 == buf[*pos])
223: return(ARGV_EOLN);
224:
225: assert(' ' != buf[*pos]);
226:
227: /* Parse through to the first unescaped space. */
228:
229: p = &buf[++(*pos)];
230:
231: assert(*pos > 0);
232:
233: /* LINTED */
234: while (buf[*pos]) {
235: if (' ' == buf[*pos])
236: if ('\\' != buf[*pos - 1])
237: break;
238: (*pos)++;
239: }
240:
241: /* XXX - save zeroed byte, if not an argument. */
242:
243: sv = 0;
244: if (buf[*pos]) {
245: sv = buf[*pos];
246: buf[(*pos)++] = 0;
247: }
248:
249: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
250: tmp.line = line;
251: tmp.pos = *pos;
252:
253: /* See if our token accepts the argument. */
254:
255: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
256: /* XXX - restore saved zeroed byte. */
257: if (sv)
258: buf[*pos - 1] = sv;
259: return(ARGV_WORD);
260: }
261:
262: while (buf[*pos] && ' ' == buf[*pos])
263: (*pos)++;
264:
1.11 kristaps 265: if ( ! argv(m, line, &tmp, pos, buf))
1.1 kristaps 266: return(ARGV_ERROR);
267:
268: if (NULL == (arg = *v)) {
1.2 kristaps 269: *v = calloc(1, sizeof(struct mdoc_arg));
270: if (NULL == *v) {
1.11 kristaps 271: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 272: return(ARGV_ERROR);
273: }
1.1 kristaps 274: arg = *v;
275: }
276:
277: arg->argc++;
1.2 kristaps 278: arg->argv = realloc(arg->argv, arg->argc *
1.1 kristaps 279: sizeof(struct mdoc_argv));
280:
1.2 kristaps 281: if (NULL == arg->argv) {
1.11 kristaps 282: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 283: return(ARGV_ERROR);
284: }
285:
1.1 kristaps 286: (void)memcpy(&arg->argv[(int)arg->argc - 1],
287: &tmp, sizeof(struct mdoc_argv));
288:
289: return(ARGV_ARG);
290: }
291:
292:
293: void
294: mdoc_argv_free(struct mdoc_arg *p)
295: {
296: int i, j;
297:
298: if (NULL == p)
299: return;
300:
301: if (p->refcnt) {
302: --(p->refcnt);
303: if (p->refcnt)
304: return;
305: }
306: assert(p->argc);
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]);
315:
316: free(p->argv[i].value);
317: }
318:
319: free(p->argv);
320: free(p);
321: }
322:
323:
324: int
1.23 kristaps 325: mdoc_zargs(struct mdoc *m, int line, int *pos,
326: char *buf, int flags, char **v)
1.19 kristaps 327: {
328:
1.23 kristaps 329: return(args(m, line, pos, buf, flags, v));
1.19 kristaps 330: }
331:
332:
333: int
1.11 kristaps 334: mdoc_args(struct mdoc *m, int line,
1.1 kristaps 335: int *pos, char *buf, int tok, char **v)
336: {
337: int fl, c, i;
338: struct mdoc_node *n;
339:
340: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
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:
405: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
406: for (i = *pos; buf[i]; ) {
407: if ( ! mdoc_iscdelim(buf[i]))
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
556: argv_a2arg(int tok, const char *argv)
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):
1.2 kristaps 569: if (0 == strcmp(argv, "split"))
1.1 kristaps 570: return(MDOC_Split);
1.2 kristaps 571: else if (0 == strcmp(argv, "nosplit"))
1.1 kristaps 572: return(MDOC_Nosplit);
573: break;
574:
575: case (MDOC_Bd):
1.2 kristaps 576: if (0 == strcmp(argv, "ragged"))
1.1 kristaps 577: return(MDOC_Ragged);
1.2 kristaps 578: else if (0 == strcmp(argv, "unfilled"))
1.1 kristaps 579: return(MDOC_Unfilled);
1.2 kristaps 580: else if (0 == strcmp(argv, "filled"))
1.1 kristaps 581: return(MDOC_Filled);
1.2 kristaps 582: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 583: return(MDOC_Literal);
1.2 kristaps 584: else if (0 == strcmp(argv, "file"))
1.1 kristaps 585: return(MDOC_File);
1.2 kristaps 586: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 587: return(MDOC_Offset);
1.2 kristaps 588: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 589: return(MDOC_Compact);
590: break;
591:
592: case (MDOC_Bf):
1.2 kristaps 593: if (0 == strcmp(argv, "emphasis"))
1.1 kristaps 594: return(MDOC_Emphasis);
1.2 kristaps 595: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 596: return(MDOC_Literal);
1.2 kristaps 597: else if (0 == strcmp(argv, "symbolic"))
1.1 kristaps 598: return(MDOC_Symbolic);
599: break;
600:
601: case (MDOC_Bk):
1.2 kristaps 602: if (0 == strcmp(argv, "words"))
1.1 kristaps 603: return(MDOC_Words);
604: break;
605:
606: case (MDOC_Bl):
1.2 kristaps 607: if (0 == strcmp(argv, "bullet"))
1.1 kristaps 608: return(MDOC_Bullet);
1.2 kristaps 609: else if (0 == strcmp(argv, "dash"))
1.1 kristaps 610: return(MDOC_Dash);
1.2 kristaps 611: else if (0 == strcmp(argv, "hyphen"))
1.1 kristaps 612: return(MDOC_Hyphen);
1.2 kristaps 613: else if (0 == strcmp(argv, "item"))
1.1 kristaps 614: return(MDOC_Item);
1.2 kristaps 615: else if (0 == strcmp(argv, "enum"))
1.1 kristaps 616: return(MDOC_Enum);
1.2 kristaps 617: else if (0 == strcmp(argv, "tag"))
1.1 kristaps 618: return(MDOC_Tag);
1.2 kristaps 619: else if (0 == strcmp(argv, "diag"))
1.1 kristaps 620: return(MDOC_Diag);
1.2 kristaps 621: else if (0 == strcmp(argv, "hang"))
1.1 kristaps 622: return(MDOC_Hang);
1.2 kristaps 623: else if (0 == strcmp(argv, "ohang"))
1.1 kristaps 624: return(MDOC_Ohang);
1.2 kristaps 625: else if (0 == strcmp(argv, "inset"))
1.1 kristaps 626: return(MDOC_Inset);
1.2 kristaps 627: else if (0 == strcmp(argv, "column"))
1.1 kristaps 628: return(MDOC_Column);
1.2 kristaps 629: else if (0 == strcmp(argv, "width"))
1.1 kristaps 630: return(MDOC_Width);
1.2 kristaps 631: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 632: return(MDOC_Offset);
1.2 kristaps 633: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 634: return(MDOC_Compact);
1.2 kristaps 635: else if (0 == strcmp(argv, "nested"))
1.1 kristaps 636: return(MDOC_Nested);
637: break;
638:
639: case (MDOC_Rv):
640: /* FALLTHROUGH */
641: case (MDOC_Ex):
1.2 kristaps 642: if (0 == strcmp(argv, "std"))
1.1 kristaps 643: return(MDOC_Std);
644: break;
645: default:
646: break;
647: }
648:
649: return(MDOC_ARG_MAX);
650: }
651:
652:
653: static int
1.11 kristaps 654: argv_multi(struct mdoc *m, int line,
1.1 kristaps 655: struct mdoc_argv *v, int *pos, char *buf)
656: {
1.8 kristaps 657: int c;
1.1 kristaps 658: char *p;
659:
660: for (v->sz = 0; ; v->sz++) {
661: if ('-' == buf[*pos])
662: break;
1.17 kristaps 663: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 664: if (ARGS_ERROR == c)
665: return(0);
666: else if (ARGS_EOLN == c)
667: break;
668:
1.2 kristaps 669: if (0 == v->sz % MULTI_STEP) {
670: v->value = realloc(v->value,
1.1 kristaps 671: (v->sz + MULTI_STEP) * sizeof(char *));
1.2 kristaps 672: if (NULL == v->value) {
1.11 kristaps 673: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 674: return(ARGV_ERROR);
675: }
676: }
1.1 kristaps 677: if (NULL == (v->value[(int)v->sz] = strdup(p)))
1.11 kristaps 678: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 679: }
680:
1.7 kristaps 681: return(1);
1.1 kristaps 682: }
683:
684:
685: static int
1.11 kristaps 686: argv_opt_single(struct mdoc *m, int line,
1.1 kristaps 687: struct mdoc_argv *v, int *pos, char *buf)
688: {
689: int c;
690: char *p;
691:
692: if ('-' == buf[*pos])
693: return(1);
694:
1.17 kristaps 695: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 696: if (ARGS_ERROR == c)
697: return(0);
698: if (ARGS_EOLN == c)
699: return(1);
700:
701: v->sz = 1;
702: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.11 kristaps 703: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 704: if (NULL == (v->value[0] = strdup(p)))
1.11 kristaps 705: return(mdoc_nerr(m, m->last, EMALLOC));
1.2 kristaps 706:
1.1 kristaps 707: return(1);
708: }
709:
710:
711: /*
712: * Parse a single, mandatory value from the stream.
713: */
714: static int
1.11 kristaps 715: argv_single(struct mdoc *m, int line,
1.1 kristaps 716: struct mdoc_argv *v, int *pos, char *buf)
717: {
718: int c, ppos;
719: char *p;
720:
721: ppos = *pos;
722:
1.17 kristaps 723: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 724: if (ARGS_ERROR == c)
725: return(0);
726: if (ARGS_EOLN == c)
1.11 kristaps 727: return(mdoc_perr(m, line, ppos, EARGVAL));
1.1 kristaps 728:
729: v->sz = 1;
730: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.11 kristaps 731: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 732: if (NULL == (v->value[0] = strdup(p)))
1.11 kristaps 733: return(mdoc_nerr(m, m->last, EMALLOC));
1.2 kristaps 734:
1.1 kristaps 735: return(1);
736: }
737:
738:
739: /*
740: * Determine rules for parsing arguments. Arguments can either accept
741: * no parameters, an optional single parameter, one parameter, or
742: * multiple parameters.
743: */
744: static int
745: argv(struct mdoc *mdoc, int line,
746: struct mdoc_argv *v, int *pos, char *buf)
747: {
748:
749: v->sz = 0;
750: v->value = NULL;
751:
752: switch (mdoc_argvflags[v->arg]) {
753: case (ARGV_SINGLE):
754: return(argv_single(mdoc, line, v, pos, buf));
755: case (ARGV_MULTI):
756: return(argv_multi(mdoc, line, v, pos, buf));
757: case (ARGV_OPT_SINGLE):
758: return(argv_opt_single(mdoc, line, v, pos, buf));
759: default:
760: /* ARGV_NONE */
761: break;
762: }
763:
764: return(1);
765: }
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