Annotation of mandoc/mdoc_argv.c, Revision 1.30
1.30 ! kristaps 1: /* $Id: mdoc_argv.c,v 1.29 2009/10/19 09:40:23 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 */
1.29 kristaps 62: ARGV_SINGLE, /* MDOC_File */
1.26 kristaps 63: ARGV_OPT_SINGLE, /* MDOC_Offset */
1.1 kristaps 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 */
1.25 kristaps 77: ARGV_NONE, /* MDOC_Std */
1.1 kristaps 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 */
1.30 ! kristaps 206: 0, /* %U */
1.1 kristaps 207: };
208:
209:
210: /*
211: * Parse an argument from line text. This comes in the form of -key
212: * [value0...], which may either have a single mandatory value, at least
213: * one mandatory value, an optional single value, or no value.
214: */
215: int
1.11 kristaps 216: mdoc_argv(struct mdoc *m, int line, int tok,
1.1 kristaps 217: struct mdoc_arg **v, int *pos, char *buf)
218: {
219: char *p, sv;
220: struct mdoc_argv tmp;
221: struct mdoc_arg *arg;
222:
223: if (0 == buf[*pos])
224: return(ARGV_EOLN);
225:
226: assert(' ' != buf[*pos]);
227:
228: /* Parse through to the first unescaped space. */
229:
230: p = &buf[++(*pos)];
231:
232: assert(*pos > 0);
233:
234: /* LINTED */
235: while (buf[*pos]) {
236: if (' ' == buf[*pos])
237: if ('\\' != buf[*pos - 1])
238: break;
239: (*pos)++;
240: }
241:
242: /* XXX - save zeroed byte, if not an argument. */
243:
244: sv = 0;
245: if (buf[*pos]) {
246: sv = buf[*pos];
247: buf[(*pos)++] = 0;
248: }
249:
250: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
251: tmp.line = line;
252: tmp.pos = *pos;
253:
254: /* See if our token accepts the argument. */
255:
256: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
257: /* XXX - restore saved zeroed byte. */
258: if (sv)
259: buf[*pos - 1] = sv;
260: return(ARGV_WORD);
261: }
262:
263: while (buf[*pos] && ' ' == buf[*pos])
264: (*pos)++;
265:
1.11 kristaps 266: if ( ! argv(m, line, &tmp, pos, buf))
1.1 kristaps 267: return(ARGV_ERROR);
268:
269: if (NULL == (arg = *v)) {
1.2 kristaps 270: *v = calloc(1, sizeof(struct mdoc_arg));
271: if (NULL == *v) {
1.11 kristaps 272: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 273: return(ARGV_ERROR);
274: }
1.1 kristaps 275: arg = *v;
276: }
277:
278: arg->argc++;
1.2 kristaps 279: arg->argv = realloc(arg->argv, arg->argc *
1.1 kristaps 280: sizeof(struct mdoc_argv));
281:
1.2 kristaps 282: if (NULL == arg->argv) {
1.11 kristaps 283: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 284: return(ARGV_ERROR);
285: }
286:
1.1 kristaps 287: (void)memcpy(&arg->argv[(int)arg->argc - 1],
288: &tmp, sizeof(struct mdoc_argv));
289:
290: return(ARGV_ARG);
291: }
292:
293:
294: void
295: mdoc_argv_free(struct mdoc_arg *p)
296: {
297: int i, j;
298:
299: if (NULL == p)
300: return;
301:
302: if (p->refcnt) {
303: --(p->refcnt);
304: if (p->refcnt)
305: return;
306: }
307: assert(p->argc);
308:
309: /* LINTED */
310: for (i = 0; i < (int)p->argc; i++) {
311: if (0 == p->argv[i].sz)
312: continue;
1.26 kristaps 313: if (NULL == p->argv[i].value)
314: continue;
315:
1.1 kristaps 316: /* LINTED */
317: for (j = 0; j < (int)p->argv[i].sz; j++)
1.26 kristaps 318: if (p->argv[i].value[j])
319: free(p->argv[i].value[j]);
1.1 kristaps 320:
321: free(p->argv[i].value);
322: }
323:
324: free(p->argv);
325: free(p);
326: }
327:
328:
329: int
1.23 kristaps 330: mdoc_zargs(struct mdoc *m, int line, int *pos,
331: char *buf, int flags, char **v)
1.19 kristaps 332: {
333:
1.23 kristaps 334: return(args(m, line, pos, buf, flags, v));
1.19 kristaps 335: }
336:
337:
338: int
1.11 kristaps 339: mdoc_args(struct mdoc *m, int line,
1.1 kristaps 340: int *pos, char *buf, int tok, char **v)
341: {
342: int fl, c, i;
343: struct mdoc_node *n;
344:
345: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
346:
1.17 kristaps 347: if (MDOC_It != tok)
348: return(args(m, line, pos, buf, fl, v));
349:
1.1 kristaps 350: /*
1.17 kristaps 351: * The `It' macro is a special case, as it acquires parameters from its
352: * parent `Bl' context, specifically, we're concerned with -column.
1.1 kristaps 353: */
354:
1.17 kristaps 355: for (n = m->last; n; n = n->parent)
356: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
357: break;
1.1 kristaps 358:
1.17 kristaps 359: assert(n);
360: c = (int)(n->args ? n->args->argc : 0);
361: assert(c > 0);
1.1 kristaps 362:
1.17 kristaps 363: /* LINTED */
364: for (i = 0; i < c; i++) {
365: if (MDOC_Column != n->args->argv[i].arg)
366: continue;
367: fl |= ARGS_TABSEP;
368: fl &= ~ARGS_DELIM;
1.1 kristaps 369: break;
370: }
371:
1.11 kristaps 372: return(args(m, line, pos, buf, fl, v));
1.1 kristaps 373: }
374:
375:
376: static int
1.13 kristaps 377: args(struct mdoc *m, int line, int *pos,
378: char *buf, int fl, char **v)
1.1 kristaps 379: {
1.21 kristaps 380: int i;
1.1 kristaps 381: char *p, *pp;
382:
1.24 kristaps 383: /*
384: * Parse out the terms (like `val' in `.Xx -arg val' or simply
385: * `.Xx val'), which can have all sorts of properties:
386: *
387: * ARGS_DELIM: use special handling if encountering trailing
388: * delimiters in the form of [[::delim::][ ]+]+.
389: *
390: * ARGS_NOWARN: don't post warnings. This is only used when
391: * re-parsing delimiters, as the warnings have already been
392: * posted.
393: *
394: * ARGS_TABSEP: use special handling for tab/`Ta' separated
395: * phrases like in `Bl -column'.
396: */
397:
1.17 kristaps 398: assert(*pos);
399: assert(' ' != buf[*pos]);
1.1 kristaps 400:
401: if (0 == buf[*pos])
402: return(ARGS_EOLN);
403:
404: /*
405: * If the first character is a delimiter and we're to look for
406: * delimited strings, then pass down the buffer seeing if it
407: * follows the pattern of [[::delim::][ ]+]+.
408: */
409:
410: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
411: for (i = *pos; buf[i]; ) {
412: if ( ! mdoc_iscdelim(buf[i]))
413: break;
414: i++;
415: if (0 == buf[i] || ' ' != buf[i])
416: break;
417: i++;
418: while (buf[i] && ' ' == buf[i])
419: i++;
420: }
1.17 kristaps 421:
1.1 kristaps 422: if (0 == buf[i]) {
423: *v = &buf[*pos];
1.23 kristaps 424: if (' ' != buf[i - 1])
425: return(ARGS_PUNCT);
426: if (ARGS_NOWARN & fl)
427: return(ARGS_PUNCT);
428: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
429: return(ARGS_ERROR);
1.1 kristaps 430: return(ARGS_PUNCT);
431: }
432: }
433:
1.17 kristaps 434: *v = &buf[*pos];
1.1 kristaps 435:
1.17 kristaps 436: /*
437: * First handle TABSEP items, restricted to `Bl -column'. This
438: * ignores conventional token parsing and instead uses tabs or
439: * `Ta' macros to separate phrases. Phrases are parsed again
440: * for arguments at a later phase.
441: */
1.1 kristaps 442:
1.17 kristaps 443: if (ARGS_TABSEP & fl) {
1.20 kristaps 444: /* Scan ahead to tab (can't be escaped). */
1.17 kristaps 445: p = strchr(*v, '\t');
446:
447: /* Scan ahead to unescaped `Ta'. */
448: for (pp = *v; ; pp++) {
449: if (NULL == (pp = strstr(pp, "Ta")))
450: break;
451: if (pp > *v && ' ' != *(pp - 1))
452: continue;
453: if (' ' == *(pp + 2) || 0 == *(pp + 2))
454: break;
455: }
456:
1.21 kristaps 457: /*
458: * Adjust new-buffer position to be beyond delimiter
459: * mark (e.g., Ta -> end + 2).
460: */
1.20 kristaps 461: if (p && pp) {
462: *pos += pp < p ? 2 : 1;
463: p = pp < p ? pp : p;
464: } else if (p && ! pp) {
465: *pos += 1;
466: } else if (pp && ! p) {
1.17 kristaps 467: p = pp;
1.20 kristaps 468: *pos += 2;
469: } else
470: p = strchr(*v, 0);
471:
1.21 kristaps 472: /* Whitespace check for eoln case... */
1.23 kristaps 473: if (0 == *p && ' ' == *(p - 1) && ! (ARGS_NOWARN & fl))
1.20 kristaps 474: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
475: return(ARGS_ERROR);
476:
477: *pos += (int)(p - *v);
1.17 kristaps 478:
479: /* Strip delimiter's preceding whitespace. */
1.20 kristaps 480: pp = p - 1;
481: while (pp > *v && ' ' == *pp) {
482: if (pp > *v && '\\' == *(pp - 1))
483: break;
484: pp--;
1.17 kristaps 485: }
1.20 kristaps 486: *(pp + 1) = 0;
1.17 kristaps 487:
1.20 kristaps 488: /* Strip delimiter's proceeding whitespace. */
489: for (pp = &buf[*pos]; ' ' == *pp; pp++, (*pos)++)
490: /* Skip ahead. */ ;
1.1 kristaps 491:
1.17 kristaps 492: return(ARGS_PHRASE);
493: }
1.1 kristaps 494:
1.17 kristaps 495: /*
496: * Process a quoted literal. A quote begins with a double-quote
497: * and ends with a double-quote NOT preceded by a double-quote.
498: * Whitespace is NOT involved in literal termination.
499: */
1.1 kristaps 500:
1.17 kristaps 501: if ('\"' == buf[*pos]) {
502: *v = &buf[++(*pos)];
1.1 kristaps 503:
1.17 kristaps 504: for ( ; buf[*pos]; (*pos)++) {
505: if ('\"' != buf[*pos])
506: continue;
507: if ('\"' != buf[*pos + 1])
508: break;
509: (*pos)++;
510: }
1.1 kristaps 511:
1.17 kristaps 512: if (0 == buf[*pos]) {
1.23 kristaps 513: if (ARGS_NOWARN & fl)
514: return(ARGS_QWORD);
1.18 kristaps 515: if ( ! mdoc_pwarn(m, line, *pos, EQUOTTERM))
516: return(ARGS_ERROR);
517: return(ARGS_QWORD);
1.17 kristaps 518: }
1.1 kristaps 519:
520: buf[(*pos)++] = 0;
521:
522: if (0 == buf[*pos])
1.17 kristaps 523: return(ARGS_QWORD);
1.1 kristaps 524:
1.17 kristaps 525: while (' ' == buf[*pos])
526: (*pos)++;
1.1 kristaps 527:
1.23 kristaps 528: if (0 == buf[*pos] && ! (ARGS_NOWARN & fl))
1.17 kristaps 529: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
530: return(ARGS_ERROR);
1.1 kristaps 531:
1.17 kristaps 532: return(ARGS_QWORD);
1.1 kristaps 533: }
534:
1.17 kristaps 535: /*
536: * A non-quoted term progresses until either the end of line or
537: * a non-escaped whitespace.
1.1 kristaps 538: */
539:
1.17 kristaps 540: for ( ; buf[*pos]; (*pos)++)
541: if (' ' == buf[*pos] && '\\' != buf[*pos - 1])
542: break;
1.1 kristaps 543:
1.17 kristaps 544: if (0 == buf[*pos])
545: return(ARGS_WORD);
1.1 kristaps 546:
547: buf[(*pos)++] = 0;
548:
1.17 kristaps 549: while (' ' == buf[*pos])
1.1 kristaps 550: (*pos)++;
551:
1.23 kristaps 552: if (0 == buf[*pos] && ! (ARGS_NOWARN & fl))
1.17 kristaps 553: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
554: return(ARGS_ERROR);
1.1 kristaps 555:
1.17 kristaps 556: return(ARGS_WORD);
1.1 kristaps 557: }
558:
559:
560: static int
1.27 kristaps 561: argv_a2arg(int tok, const char *p)
1.1 kristaps 562: {
563:
564: /*
565: * Parse an argument identifier from its text. XXX - this
566: * should really be table-driven to clarify the code.
567: *
568: * If you add an argument to the list, make sure that you
569: * register it here with its one or more macros!
570: */
571:
572: switch (tok) {
573: case (MDOC_An):
1.27 kristaps 574: if (0 == strcmp(p, "split"))
1.1 kristaps 575: return(MDOC_Split);
1.27 kristaps 576: else if (0 == strcmp(p, "nosplit"))
1.1 kristaps 577: return(MDOC_Nosplit);
578: break;
579:
580: case (MDOC_Bd):
1.27 kristaps 581: if (0 == strcmp(p, "ragged"))
1.1 kristaps 582: return(MDOC_Ragged);
1.27 kristaps 583: else if (0 == strcmp(p, "unfilled"))
1.1 kristaps 584: return(MDOC_Unfilled);
1.27 kristaps 585: else if (0 == strcmp(p, "filled"))
1.1 kristaps 586: return(MDOC_Filled);
1.27 kristaps 587: else if (0 == strcmp(p, "literal"))
1.1 kristaps 588: return(MDOC_Literal);
1.27 kristaps 589: else if (0 == strcmp(p, "file"))
1.1 kristaps 590: return(MDOC_File);
1.27 kristaps 591: else if (0 == strcmp(p, "offset"))
1.1 kristaps 592: return(MDOC_Offset);
1.27 kristaps 593: else if (0 == strcmp(p, "compact"))
1.1 kristaps 594: return(MDOC_Compact);
1.28 kristaps 595: else if (0 == strcmp(p, "centered"))
596: return(MDOC_Centred);
1.1 kristaps 597: break;
598:
599: case (MDOC_Bf):
1.27 kristaps 600: if (0 == strcmp(p, "emphasis"))
1.1 kristaps 601: return(MDOC_Emphasis);
1.27 kristaps 602: else if (0 == strcmp(p, "literal"))
1.1 kristaps 603: return(MDOC_Literal);
1.27 kristaps 604: else if (0 == strcmp(p, "symbolic"))
1.1 kristaps 605: return(MDOC_Symbolic);
606: break;
607:
608: case (MDOC_Bk):
1.27 kristaps 609: if (0 == strcmp(p, "words"))
1.1 kristaps 610: return(MDOC_Words);
611: break;
612:
613: case (MDOC_Bl):
1.27 kristaps 614: if (0 == strcmp(p, "bullet"))
1.1 kristaps 615: return(MDOC_Bullet);
1.27 kristaps 616: else if (0 == strcmp(p, "dash"))
1.1 kristaps 617: return(MDOC_Dash);
1.27 kristaps 618: else if (0 == strcmp(p, "hyphen"))
1.1 kristaps 619: return(MDOC_Hyphen);
1.27 kristaps 620: else if (0 == strcmp(p, "item"))
1.1 kristaps 621: return(MDOC_Item);
1.27 kristaps 622: else if (0 == strcmp(p, "enum"))
1.1 kristaps 623: return(MDOC_Enum);
1.27 kristaps 624: else if (0 == strcmp(p, "tag"))
1.1 kristaps 625: return(MDOC_Tag);
1.27 kristaps 626: else if (0 == strcmp(p, "diag"))
1.1 kristaps 627: return(MDOC_Diag);
1.27 kristaps 628: else if (0 == strcmp(p, "hang"))
1.1 kristaps 629: return(MDOC_Hang);
1.27 kristaps 630: else if (0 == strcmp(p, "ohang"))
1.1 kristaps 631: return(MDOC_Ohang);
1.27 kristaps 632: else if (0 == strcmp(p, "inset"))
1.1 kristaps 633: return(MDOC_Inset);
1.27 kristaps 634: else if (0 == strcmp(p, "column"))
1.1 kristaps 635: return(MDOC_Column);
1.27 kristaps 636: else if (0 == strcmp(p, "width"))
1.1 kristaps 637: return(MDOC_Width);
1.27 kristaps 638: else if (0 == strcmp(p, "offset"))
1.1 kristaps 639: return(MDOC_Offset);
1.27 kristaps 640: else if (0 == strcmp(p, "compact"))
1.1 kristaps 641: return(MDOC_Compact);
1.27 kristaps 642: else if (0 == strcmp(p, "nested"))
1.1 kristaps 643: return(MDOC_Nested);
644: break;
645:
646: case (MDOC_Rv):
647: /* FALLTHROUGH */
648: case (MDOC_Ex):
1.27 kristaps 649: if (0 == strcmp(p, "std"))
1.1 kristaps 650: return(MDOC_Std);
651: break;
652: default:
653: break;
654: }
655:
656: return(MDOC_ARG_MAX);
657: }
658:
659:
660: static int
1.11 kristaps 661: argv_multi(struct mdoc *m, int line,
1.1 kristaps 662: struct mdoc_argv *v, int *pos, char *buf)
663: {
1.8 kristaps 664: int c;
1.1 kristaps 665: char *p;
666:
667: for (v->sz = 0; ; v->sz++) {
668: if ('-' == buf[*pos])
669: break;
1.17 kristaps 670: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 671: if (ARGS_ERROR == c)
672: return(0);
673: else if (ARGS_EOLN == c)
674: break;
675:
1.2 kristaps 676: if (0 == v->sz % MULTI_STEP) {
677: v->value = realloc(v->value,
1.1 kristaps 678: (v->sz + MULTI_STEP) * sizeof(char *));
1.2 kristaps 679: if (NULL == v->value) {
1.11 kristaps 680: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 681: return(ARGV_ERROR);
682: }
683: }
1.1 kristaps 684: if (NULL == (v->value[(int)v->sz] = strdup(p)))
1.11 kristaps 685: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 686: }
687:
1.7 kristaps 688: return(1);
1.1 kristaps 689: }
690:
691:
692: static int
1.11 kristaps 693: argv_opt_single(struct mdoc *m, int line,
1.1 kristaps 694: struct mdoc_argv *v, int *pos, char *buf)
695: {
696: int c;
697: char *p;
698:
699: if ('-' == buf[*pos])
700: return(1);
701:
1.17 kristaps 702: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 703: if (ARGS_ERROR == c)
704: return(0);
705: if (ARGS_EOLN == c)
706: return(1);
707:
708: v->sz = 1;
709: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.11 kristaps 710: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 711: if (NULL == (v->value[0] = strdup(p)))
1.11 kristaps 712: return(mdoc_nerr(m, m->last, EMALLOC));
1.2 kristaps 713:
1.1 kristaps 714: return(1);
715: }
716:
717:
718: /*
719: * Parse a single, mandatory value from the stream.
720: */
721: static int
1.11 kristaps 722: argv_single(struct mdoc *m, int line,
1.1 kristaps 723: struct mdoc_argv *v, int *pos, char *buf)
724: {
725: int c, ppos;
726: char *p;
727:
728: ppos = *pos;
729:
1.17 kristaps 730: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 731: if (ARGS_ERROR == c)
732: return(0);
733: if (ARGS_EOLN == c)
1.11 kristaps 734: return(mdoc_perr(m, line, ppos, EARGVAL));
1.1 kristaps 735:
736: v->sz = 1;
737: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.11 kristaps 738: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 739: if (NULL == (v->value[0] = strdup(p)))
1.11 kristaps 740: return(mdoc_nerr(m, m->last, EMALLOC));
1.2 kristaps 741:
1.1 kristaps 742: return(1);
743: }
744:
745:
746: /*
747: * Determine rules for parsing arguments. Arguments can either accept
748: * no parameters, an optional single parameter, one parameter, or
749: * multiple parameters.
750: */
751: static int
752: argv(struct mdoc *mdoc, int line,
753: struct mdoc_argv *v, int *pos, char *buf)
754: {
755:
756: v->sz = 0;
757: v->value = NULL;
758:
759: switch (mdoc_argvflags[v->arg]) {
760: case (ARGV_SINGLE):
761: return(argv_single(mdoc, line, v, pos, buf));
762: case (ARGV_MULTI):
763: return(argv_multi(mdoc, line, v, pos, buf));
764: case (ARGV_OPT_SINGLE):
765: return(argv_opt_single(mdoc, line, v, pos, buf));
766: default:
767: /* ARGV_NONE */
768: break;
769: }
770:
771: return(1);
772: }
CVSweb
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to mdoc_argv.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [cvsweb.bsd.lv] / mandoc