Annotation of mandoc/mdoc_argv.c, Revision 1.12
1.12 ! kristaps 1: /* $Id: mdoc_argv.c,v 1.11 2009/07/06 13:04:52 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_QUOTED (1 << 0)
38: #define ARGS_DELIM (1 << 1)
39: #define ARGS_TABSEP (1 << 2)
40: #define ARGS_ARGVLIKE (1 << 3)
41:
42: #define ARGV_NONE (1 << 0)
43: #define ARGV_SINGLE (1 << 1)
44: #define ARGV_MULTI (1 << 2)
45: #define ARGV_OPT_SINGLE (1 << 3)
46:
47: #define MULTI_STEP 5
48:
49: static int argv_a2arg(int, const char *);
50: static int args(struct mdoc *, int, int *,
51: char *, int, char **);
52: static int argv(struct mdoc *, int,
53: struct mdoc_argv *, int *, char *);
54: static int argv_single(struct mdoc *, int,
55: struct mdoc_argv *, int *, char *);
56: static int argv_opt_single(struct mdoc *, int,
57: struct mdoc_argv *, int *, char *);
58: static int argv_multi(struct mdoc *, int,
59: struct mdoc_argv *, int *, char *);
1.2 kristaps 60:
1.1 kristaps 61: /* Per-argument flags. */
62:
63: static int mdoc_argvflags[MDOC_ARG_MAX] = {
64: ARGV_NONE, /* MDOC_Split */
65: ARGV_NONE, /* MDOC_Nosplit */
66: ARGV_NONE, /* MDOC_Ragged */
67: ARGV_NONE, /* MDOC_Unfilled */
68: ARGV_NONE, /* MDOC_Literal */
69: ARGV_NONE, /* MDOC_File */
70: ARGV_SINGLE, /* MDOC_Offset */
71: ARGV_NONE, /* MDOC_Bullet */
72: ARGV_NONE, /* MDOC_Dash */
73: ARGV_NONE, /* MDOC_Hyphen */
74: ARGV_NONE, /* MDOC_Item */
75: ARGV_NONE, /* MDOC_Enum */
76: ARGV_NONE, /* MDOC_Tag */
77: ARGV_NONE, /* MDOC_Diag */
78: ARGV_NONE, /* MDOC_Hang */
79: ARGV_NONE, /* MDOC_Ohang */
80: ARGV_NONE, /* MDOC_Inset */
81: ARGV_MULTI, /* MDOC_Column */
82: ARGV_SINGLE, /* MDOC_Width */
83: ARGV_NONE, /* MDOC_Compact */
84: ARGV_OPT_SINGLE, /* MDOC_Std */
85: ARGV_NONE, /* MDOC_Filled */
86: ARGV_NONE, /* MDOC_Words */
87: ARGV_NONE, /* MDOC_Emphasis */
88: ARGV_NONE, /* MDOC_Symbolic */
89: ARGV_NONE /* MDOC_Symbolic */
90: };
91:
92: static int mdoc_argflags[MDOC_MAX] = {
1.5 kristaps 93: 0, /* Ap */
1.1 kristaps 94: 0, /* Dd */
95: 0, /* Dt */
96: 0, /* Os */
97: ARGS_QUOTED, /* Sh */
98: ARGS_QUOTED, /* Ss */
99: ARGS_DELIM, /* Pp */
100: ARGS_DELIM, /* D1 */
101: ARGS_DELIM | ARGS_QUOTED, /* Dl */
102: 0, /* Bd */
103: 0, /* Ed */
1.7 kristaps 104: ARGS_QUOTED, /* Bl */
1.1 kristaps 105: 0, /* El */
106: 0, /* It */
107: ARGS_DELIM, /* Ad */
108: ARGS_DELIM, /* An */
109: ARGS_DELIM | ARGS_QUOTED, /* Ar */
110: ARGS_QUOTED, /* Cd */
111: ARGS_DELIM, /* Cm */
112: ARGS_DELIM, /* Dv */
113: ARGS_DELIM, /* Er */
114: ARGS_DELIM, /* Ev */
115: 0, /* Ex */
116: ARGS_DELIM | ARGS_QUOTED, /* Fa */
117: 0, /* Fd */
118: ARGS_DELIM, /* Fl */
119: ARGS_DELIM | ARGS_QUOTED, /* Fn */
120: ARGS_DELIM | ARGS_QUOTED, /* Ft */
121: ARGS_DELIM, /* Ic */
122: 0, /* In */
123: ARGS_DELIM | ARGS_QUOTED, /* Li */
124: ARGS_QUOTED, /* Nd */
125: ARGS_DELIM, /* Nm */
126: ARGS_DELIM, /* Op */
127: 0, /* Ot */
128: ARGS_DELIM, /* Pa */
129: 0, /* Rv */
130: ARGS_DELIM | ARGS_ARGVLIKE, /* St */
131: ARGS_DELIM, /* Va */
132: ARGS_DELIM, /* Vt */
133: ARGS_DELIM, /* Xr */
134: ARGS_QUOTED, /* %A */
135: ARGS_QUOTED, /* %B */
136: ARGS_QUOTED, /* %D */
137: ARGS_QUOTED, /* %I */
138: ARGS_QUOTED, /* %J */
139: ARGS_QUOTED, /* %N */
140: ARGS_QUOTED, /* %O */
141: ARGS_QUOTED, /* %P */
142: ARGS_QUOTED, /* %R */
143: ARGS_QUOTED, /* %T */
144: ARGS_QUOTED, /* %V */
145: ARGS_DELIM, /* Ac */
146: 0, /* Ao */
147: ARGS_DELIM, /* Aq */
148: ARGS_DELIM, /* At */
149: ARGS_DELIM, /* Bc */
150: 0, /* Bf */
151: 0, /* Bo */
152: ARGS_DELIM, /* Bq */
153: ARGS_DELIM, /* Bsx */
154: ARGS_DELIM, /* Bx */
155: 0, /* Db */
156: ARGS_DELIM, /* Dc */
157: 0, /* Do */
158: ARGS_DELIM, /* Dq */
159: ARGS_DELIM, /* Ec */
160: 0, /* Ef */
161: ARGS_DELIM, /* Em */
162: 0, /* Eo */
163: ARGS_DELIM, /* Fx */
164: ARGS_DELIM, /* Ms */
165: ARGS_DELIM, /* No */
166: ARGS_DELIM, /* Ns */
167: ARGS_DELIM, /* Nx */
168: ARGS_DELIM, /* Ox */
169: ARGS_DELIM, /* Pc */
170: ARGS_DELIM, /* Pf */
171: 0, /* Po */
172: ARGS_DELIM, /* Pq */
173: ARGS_DELIM, /* Qc */
174: ARGS_DELIM, /* Ql */
175: 0, /* Qo */
176: ARGS_DELIM, /* Qq */
177: 0, /* Re */
178: 0, /* Rs */
179: ARGS_DELIM, /* Sc */
180: 0, /* So */
181: ARGS_DELIM, /* Sq */
182: 0, /* Sm */
183: ARGS_DELIM, /* Sx */
184: ARGS_DELIM | ARGS_QUOTED, /* Sy */
185: ARGS_DELIM, /* Tn */
186: ARGS_DELIM, /* Ux */
187: ARGS_DELIM, /* Xc */
188: 0, /* Xo */
189: ARGS_QUOTED, /* Fo */
190: 0, /* Fc */
191: 0, /* Oo */
192: ARGS_DELIM, /* Oc */
193: 0, /* Bk */
194: 0, /* Ek */
195: 0, /* Bt */
196: 0, /* Hf */
197: 0, /* Fr */
198: 0, /* Ud */
199: 0, /* Lb */
200: ARGS_DELIM, /* Lp */
201: ARGS_DELIM | ARGS_QUOTED, /* Lk */
202: ARGS_DELIM | ARGS_QUOTED, /* Mt */
203: ARGS_DELIM, /* Brq */
204: 0, /* Bro */
205: ARGS_DELIM, /* Brc */
206: ARGS_QUOTED, /* %C */
207: 0, /* Es */
208: 0, /* En */
209: 0, /* Dx */
210: ARGS_QUOTED, /* %Q */
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: int i;
224: char *p, sv;
225: struct mdoc_argv tmp;
226: struct mdoc_arg *arg;
227:
228: if (0 == buf[*pos])
229: return(ARGV_EOLN);
230:
231: assert(' ' != buf[*pos]);
232:
233: if ('-' != buf[*pos] || ARGS_ARGVLIKE & mdoc_argflags[tok])
234: return(ARGV_WORD);
235:
236: /* Parse through to the first unescaped space. */
237:
238: i = *pos;
239: p = &buf[++(*pos)];
240:
241: assert(*pos > 0);
242:
243: /* LINTED */
244: while (buf[*pos]) {
245: if (' ' == buf[*pos])
246: if ('\\' != buf[*pos - 1])
247: break;
248: (*pos)++;
249: }
250:
251: /* XXX - save zeroed byte, if not an argument. */
252:
253: sv = 0;
254: if (buf[*pos]) {
255: sv = buf[*pos];
256: buf[(*pos)++] = 0;
257: }
258:
259: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
260: tmp.line = line;
261: tmp.pos = *pos;
262:
263: /* See if our token accepts the argument. */
264:
265: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
266: /* XXX - restore saved zeroed byte. */
267: if (sv)
268: buf[*pos - 1] = sv;
1.11 kristaps 269: if ( ! mdoc_pwarn(m, line, i, EARGVPARM))
1.1 kristaps 270: return(ARGV_ERROR);
271: return(ARGV_WORD);
272: }
273:
274: while (buf[*pos] && ' ' == buf[*pos])
275: (*pos)++;
276:
1.11 kristaps 277: if ( ! argv(m, line, &tmp, pos, buf))
1.1 kristaps 278: return(ARGV_ERROR);
279:
280: if (NULL == (arg = *v)) {
1.2 kristaps 281: *v = calloc(1, sizeof(struct mdoc_arg));
282: if (NULL == *v) {
1.11 kristaps 283: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 284: return(ARGV_ERROR);
285: }
1.1 kristaps 286: arg = *v;
287: }
288:
289: arg->argc++;
1.2 kristaps 290: arg->argv = realloc(arg->argv, arg->argc *
1.1 kristaps 291: sizeof(struct mdoc_argv));
292:
1.2 kristaps 293: if (NULL == arg->argv) {
1.11 kristaps 294: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 295: return(ARGV_ERROR);
296: }
297:
1.1 kristaps 298: (void)memcpy(&arg->argv[(int)arg->argc - 1],
299: &tmp, sizeof(struct mdoc_argv));
300:
301: return(ARGV_ARG);
302: }
303:
304:
305: void
306: mdoc_argv_free(struct mdoc_arg *p)
307: {
308: int i, j;
309:
310: if (NULL == p)
311: return;
312:
313: if (p->refcnt) {
314: --(p->refcnt);
315: if (p->refcnt)
316: return;
317: }
318: assert(p->argc);
319:
320: /* LINTED */
321: for (i = 0; i < (int)p->argc; i++) {
322: if (0 == p->argv[i].sz)
323: continue;
324: /* LINTED */
325: for (j = 0; j < (int)p->argv[i].sz; j++)
326: free(p->argv[i].value[j]);
327:
328: free(p->argv[i].value);
329: }
330:
331: free(p->argv);
332: free(p);
333: }
334:
335:
336: int
1.11 kristaps 337: mdoc_args(struct mdoc *m, int line,
1.1 kristaps 338: int *pos, char *buf, int tok, char **v)
339: {
340: int fl, c, i;
341: struct mdoc_node *n;
342:
343: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
344:
345: /*
346: * Override per-macro argument flags with context-specific ones.
347: * As of now, this is only valid for `It' depending on its list
348: * context.
349: */
350:
351: switch (tok) {
352: case (MDOC_It):
1.11 kristaps 353: for (n = m->last; n; n = n->parent)
1.1 kristaps 354: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
355: break;
356:
357: assert(n);
358: c = (int)(n->args ? n->args->argc : 0);
359: assert(c > 0);
360:
361: /*
362: * Using `Bl -column' adds ARGS_TABSEP to the arguments
363: * and invalidates ARGS_DELIM. Using `Bl -diag' allows
364: * for quoted arguments.
365: */
366:
367: /* LINTED */
368: for (i = 0; i < c; i++) {
369: switch (n->args->argv[i].arg) {
370: case (MDOC_Column):
371: fl |= ARGS_TABSEP;
372: fl &= ~ARGS_DELIM;
373: i = c;
374: break;
375: case (MDOC_Diag):
376: fl |= ARGS_QUOTED;
377: i = c;
378: break;
379: default:
380: break;
381: }
382: }
383: break;
384: default:
385: break;
386: }
387:
1.11 kristaps 388: return(args(m, line, pos, buf, fl, v));
1.1 kristaps 389: }
390:
391:
392: static int
1.11 kristaps 393: args(struct mdoc *m, int line,
1.1 kristaps 394: int *pos, char *buf, int fl, char **v)
395: {
396: int i;
397: char *p, *pp;
398:
399: assert(*pos > 0);
400:
401: if (0 == buf[*pos])
402: return(ARGS_EOLN);
403:
404: if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
1.11 kristaps 405: if ( ! mdoc_pwarn(m, line, *pos, EQUOTPARM))
1.1 kristaps 406: return(ARGS_ERROR);
407:
408: if ( ! (fl & ARGS_ARGVLIKE) && '-' == buf[*pos])
1.11 kristaps 409: if ( ! mdoc_pwarn(m, line, *pos, EARGVPARM))
1.1 kristaps 410: return(ARGS_ERROR);
411:
412: /*
413: * If the first character is a delimiter and we're to look for
414: * delimited strings, then pass down the buffer seeing if it
415: * follows the pattern of [[::delim::][ ]+]+.
416: */
417:
418: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
419: for (i = *pos; buf[i]; ) {
420: if ( ! mdoc_iscdelim(buf[i]))
421: break;
422: i++;
423: /* There must be at least one space... */
424: if (0 == buf[i] || ' ' != buf[i])
425: break;
426: i++;
427: while (buf[i] && ' ' == buf[i])
428: i++;
429: }
430: if (0 == buf[i]) {
431: *v = &buf[*pos];
432: return(ARGS_PUNCT);
433: }
434: }
435:
436: /* First parse non-quoted strings. */
437:
438: if ('\"' != buf[*pos] || ! (ARGS_QUOTED & fl)) {
439: *v = &buf[*pos];
440:
441: /*
442: * Thar be dragons here! If we're tab-separated, search
443: * ahead for either a tab or the `Ta' macro.
444: * If a `Ta' is detected, it must be space-buffered before and
445: * after. If either of these hold true, then prune out the
446: * extra spaces and call it an argument.
447: */
448:
449: if (ARGS_TABSEP & fl) {
450: /* Scan ahead to unescaped tab. */
451:
452: p = strchr(*v, '\t');
453:
454: /* Scan ahead to unescaped `Ta'. */
455:
456: for (pp = *v; ; pp++) {
457: if (NULL == (pp = strstr(pp, "Ta")))
458: break;
459: if (pp > *v && ' ' != *(pp - 1))
460: continue;
461: if (' ' == *(pp + 2) || 0 == *(pp + 2))
462: break;
463: }
464:
465: /* Choose delimiter tab/Ta. */
466:
467: if (p && pp)
468: p = (p < pp ? p : pp);
469: else if ( ! p && pp)
470: p = pp;
471:
472: /* Strip delimiter's preceding whitespace. */
473:
474: if (p && p > *v) {
475: pp = p - 1;
476: while (pp > *v && ' ' == *pp)
477: pp--;
478: if (pp == *v && ' ' == *pp)
479: *pp = 0;
480: else if (' ' == *pp)
481: *(pp + 1) = 0;
482: }
483:
484: /* ...in- and proceding whitespace. */
485:
486: if (p && ('\t' != *p)) {
487: *p++ = 0;
488: *p++ = 0;
489: } else if (p)
490: *p++ = 0;
491:
492: if (p) {
493: while (' ' == *p)
494: p++;
495: if (0 != *p)
496: *(p - 1) = 0;
497: *pos += (int)(p - *v);
498: }
499:
500: if (p && 0 == *p)
1.11 kristaps 501: if ( ! mdoc_pwarn(m, line, *pos, ECOLEMPTY))
1.1 kristaps 502: return(0);
503: if (p && 0 == *p && p > *v && ' ' == *(p - 1))
1.11 kristaps 504: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
1.1 kristaps 505: return(0);
506:
507: if (p)
508: return(ARGS_PHRASE);
509:
510: /* Configure the eoln case, too. */
511:
512: p = strchr(*v, 0);
513: assert(p);
514:
515: if (p > *v && ' ' == *(p - 1))
1.11 kristaps 516: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
1.1 kristaps 517: return(0);
518: *pos += (int)(p - *v);
519:
520: return(ARGS_PHRASE);
521: }
522:
523: /* Do non-tabsep look-ahead here. */
524:
525: if ( ! (ARGS_TABSEP & fl))
526: while (buf[*pos]) {
527: if (' ' == buf[*pos])
528: if ('\\' != buf[*pos - 1])
529: break;
530: (*pos)++;
531: }
532:
533: if (0 == buf[*pos])
534: return(ARGS_WORD);
535:
536: buf[(*pos)++] = 0;
537:
538: if (0 == buf[*pos])
539: return(ARGS_WORD);
540:
541: if ( ! (ARGS_TABSEP & fl))
542: while (buf[*pos] && ' ' == buf[*pos])
543: (*pos)++;
544:
545: if (buf[*pos])
546: return(ARGS_WORD);
547:
1.11 kristaps 548: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
1.1 kristaps 549: return(ARGS_ERROR);
550:
551: return(ARGS_WORD);
552: }
553:
554: /*
555: * If we're a quoted string (and quoted strings are allowed),
556: * then parse ahead to the next quote. If none's found, it's an
557: * error. After, parse to the next word.
558: */
559:
560: *v = &buf[++(*pos)];
561:
562: while (buf[*pos] && '\"' != buf[*pos])
563: (*pos)++;
564:
565: if (0 == buf[*pos]) {
1.11 kristaps 566: (void)mdoc_perr(m, line, *pos, EQUOTTERM);
1.1 kristaps 567: return(ARGS_ERROR);
568: }
569:
570: buf[(*pos)++] = 0;
571: if (0 == buf[*pos])
572: return(ARGS_QWORD);
573:
574: while (buf[*pos] && ' ' == buf[*pos])
575: (*pos)++;
576:
577: if (buf[*pos])
578: return(ARGS_QWORD);
579:
1.11 kristaps 580: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
1.1 kristaps 581: return(ARGS_ERROR);
582:
583: return(ARGS_QWORD);
584: }
585:
586:
587: static int
588: argv_a2arg(int tok, const char *argv)
589: {
590:
591: /*
592: * Parse an argument identifier from its text. XXX - this
593: * should really be table-driven to clarify the code.
594: *
595: * If you add an argument to the list, make sure that you
596: * register it here with its one or more macros!
597: */
598:
599: switch (tok) {
600: case (MDOC_An):
1.2 kristaps 601: if (0 == strcmp(argv, "split"))
1.1 kristaps 602: return(MDOC_Split);
1.2 kristaps 603: else if (0 == strcmp(argv, "nosplit"))
1.1 kristaps 604: return(MDOC_Nosplit);
605: break;
606:
607: case (MDOC_Bd):
1.2 kristaps 608: if (0 == strcmp(argv, "ragged"))
1.1 kristaps 609: return(MDOC_Ragged);
1.2 kristaps 610: else if (0 == strcmp(argv, "unfilled"))
1.1 kristaps 611: return(MDOC_Unfilled);
1.2 kristaps 612: else if (0 == strcmp(argv, "filled"))
1.1 kristaps 613: return(MDOC_Filled);
1.2 kristaps 614: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 615: return(MDOC_Literal);
1.2 kristaps 616: else if (0 == strcmp(argv, "file"))
1.1 kristaps 617: return(MDOC_File);
1.2 kristaps 618: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 619: return(MDOC_Offset);
1.2 kristaps 620: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 621: return(MDOC_Compact);
622: break;
623:
624: case (MDOC_Bf):
1.2 kristaps 625: if (0 == strcmp(argv, "emphasis"))
1.1 kristaps 626: return(MDOC_Emphasis);
1.2 kristaps 627: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 628: return(MDOC_Literal);
1.2 kristaps 629: else if (0 == strcmp(argv, "symbolic"))
1.1 kristaps 630: return(MDOC_Symbolic);
631: break;
632:
633: case (MDOC_Bk):
1.2 kristaps 634: if (0 == strcmp(argv, "words"))
1.1 kristaps 635: return(MDOC_Words);
636: break;
637:
638: case (MDOC_Bl):
1.2 kristaps 639: if (0 == strcmp(argv, "bullet"))
1.1 kristaps 640: return(MDOC_Bullet);
1.2 kristaps 641: else if (0 == strcmp(argv, "dash"))
1.1 kristaps 642: return(MDOC_Dash);
1.2 kristaps 643: else if (0 == strcmp(argv, "hyphen"))
1.1 kristaps 644: return(MDOC_Hyphen);
1.2 kristaps 645: else if (0 == strcmp(argv, "item"))
1.1 kristaps 646: return(MDOC_Item);
1.2 kristaps 647: else if (0 == strcmp(argv, "enum"))
1.1 kristaps 648: return(MDOC_Enum);
1.2 kristaps 649: else if (0 == strcmp(argv, "tag"))
1.1 kristaps 650: return(MDOC_Tag);
1.2 kristaps 651: else if (0 == strcmp(argv, "diag"))
1.1 kristaps 652: return(MDOC_Diag);
1.2 kristaps 653: else if (0 == strcmp(argv, "hang"))
1.1 kristaps 654: return(MDOC_Hang);
1.2 kristaps 655: else if (0 == strcmp(argv, "ohang"))
1.1 kristaps 656: return(MDOC_Ohang);
1.2 kristaps 657: else if (0 == strcmp(argv, "inset"))
1.1 kristaps 658: return(MDOC_Inset);
1.2 kristaps 659: else if (0 == strcmp(argv, "column"))
1.1 kristaps 660: return(MDOC_Column);
1.2 kristaps 661: else if (0 == strcmp(argv, "width"))
1.1 kristaps 662: return(MDOC_Width);
1.2 kristaps 663: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 664: return(MDOC_Offset);
1.2 kristaps 665: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 666: return(MDOC_Compact);
1.2 kristaps 667: else if (0 == strcmp(argv, "nested"))
1.1 kristaps 668: return(MDOC_Nested);
669: break;
670:
671: case (MDOC_Rv):
672: /* FALLTHROUGH */
673: case (MDOC_Ex):
1.2 kristaps 674: if (0 == strcmp(argv, "std"))
1.1 kristaps 675: return(MDOC_Std);
676: break;
677: default:
678: break;
679: }
680:
681: return(MDOC_ARG_MAX);
682: }
683:
684:
685: static int
1.11 kristaps 686: argv_multi(struct mdoc *m, int line,
1.1 kristaps 687: struct mdoc_argv *v, int *pos, char *buf)
688: {
1.8 kristaps 689: int c;
1.1 kristaps 690: char *p;
691:
692: for (v->sz = 0; ; v->sz++) {
693: if ('-' == buf[*pos])
694: break;
1.11 kristaps 695: c = args(m, line, pos, buf, ARGS_QUOTED, &p);
1.1 kristaps 696: if (ARGS_ERROR == c)
697: return(0);
698: else if (ARGS_EOLN == c)
699: break;
700:
1.2 kristaps 701: if (0 == v->sz % MULTI_STEP) {
702: v->value = realloc(v->value,
1.1 kristaps 703: (v->sz + MULTI_STEP) * sizeof(char *));
1.2 kristaps 704: if (NULL == v->value) {
1.11 kristaps 705: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 706: return(ARGV_ERROR);
707: }
708: }
1.1 kristaps 709: if (NULL == (v->value[(int)v->sz] = strdup(p)))
1.11 kristaps 710: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 711: }
712:
1.7 kristaps 713: return(1);
1.1 kristaps 714: }
715:
716:
717: static int
1.11 kristaps 718: argv_opt_single(struct mdoc *m, int line,
1.1 kristaps 719: struct mdoc_argv *v, int *pos, char *buf)
720: {
721: int c;
722: char *p;
723:
724: if ('-' == buf[*pos])
725: return(1);
726:
1.11 kristaps 727: c = args(m, line, pos, buf, ARGS_QUOTED, &p);
1.1 kristaps 728: if (ARGS_ERROR == c)
729: return(0);
730: if (ARGS_EOLN == c)
731: return(1);
732:
733: v->sz = 1;
734: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.11 kristaps 735: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 736: if (NULL == (v->value[0] = strdup(p)))
1.11 kristaps 737: return(mdoc_nerr(m, m->last, EMALLOC));
1.2 kristaps 738:
1.1 kristaps 739: return(1);
740: }
741:
742:
743: /*
744: * Parse a single, mandatory value from the stream.
745: */
746: static int
1.11 kristaps 747: argv_single(struct mdoc *m, int line,
1.1 kristaps 748: struct mdoc_argv *v, int *pos, char *buf)
749: {
750: int c, ppos;
751: char *p;
752:
753: ppos = *pos;
754:
1.11 kristaps 755: c = args(m, line, pos, buf, ARGS_QUOTED, &p);
1.1 kristaps 756: if (ARGS_ERROR == c)
757: return(0);
758: if (ARGS_EOLN == c)
1.11 kristaps 759: return(mdoc_perr(m, line, ppos, EARGVAL));
1.1 kristaps 760:
761: v->sz = 1;
762: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.11 kristaps 763: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 764: if (NULL == (v->value[0] = strdup(p)))
1.11 kristaps 765: return(mdoc_nerr(m, m->last, EMALLOC));
1.2 kristaps 766:
1.1 kristaps 767: return(1);
768: }
769:
770:
771: /*
772: * Determine rules for parsing arguments. Arguments can either accept
773: * no parameters, an optional single parameter, one parameter, or
774: * multiple parameters.
775: */
776: static int
777: argv(struct mdoc *mdoc, int line,
778: struct mdoc_argv *v, int *pos, char *buf)
779: {
780:
781: v->sz = 0;
782: v->value = NULL;
783:
784: switch (mdoc_argvflags[v->arg]) {
785: case (ARGV_SINGLE):
786: return(argv_single(mdoc, line, v, pos, buf));
787: case (ARGV_MULTI):
788: return(argv_multi(mdoc, line, v, pos, buf));
789: case (ARGV_OPT_SINGLE):
790: return(argv_opt_single(mdoc, line, v, pos, buf));
791: default:
792: /* ARGV_NONE */
793: break;
794: }
795:
796: return(1);
797: }
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