Annotation of mandoc/mdoc_argv.c, Revision 1.23
1.23 ! kristaps 1: /* $Id: mdoc_argv.c,v 1.22 2009/08/19 14:44:35 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:
1.17 kristaps 378: assert(*pos);
379: assert(' ' != buf[*pos]);
1.1 kristaps 380:
381: if (0 == buf[*pos])
382: return(ARGS_EOLN);
383:
384: /*
385: * If the first character is a delimiter and we're to look for
386: * delimited strings, then pass down the buffer seeing if it
387: * follows the pattern of [[::delim::][ ]+]+.
388: */
389:
390: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
391: for (i = *pos; buf[i]; ) {
392: if ( ! mdoc_iscdelim(buf[i]))
393: break;
394: i++;
395: if (0 == buf[i] || ' ' != buf[i])
396: break;
397: i++;
398: while (buf[i] && ' ' == buf[i])
399: i++;
400: }
1.17 kristaps 401:
1.1 kristaps 402: if (0 == buf[i]) {
403: *v = &buf[*pos];
1.23 ! kristaps 404: if (' ' != buf[i - 1])
! 405: return(ARGS_PUNCT);
! 406: if (ARGS_NOWARN & fl)
! 407: return(ARGS_PUNCT);
! 408: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
! 409: return(ARGS_ERROR);
1.1 kristaps 410: return(ARGS_PUNCT);
411: }
412: }
413:
1.17 kristaps 414: *v = &buf[*pos];
1.1 kristaps 415:
1.17 kristaps 416: /*
417: * First handle TABSEP items, restricted to `Bl -column'. This
418: * ignores conventional token parsing and instead uses tabs or
419: * `Ta' macros to separate phrases. Phrases are parsed again
420: * for arguments at a later phase.
421: */
1.1 kristaps 422:
1.17 kristaps 423: if (ARGS_TABSEP & fl) {
1.20 kristaps 424: /* Scan ahead to tab (can't be escaped). */
1.17 kristaps 425: p = strchr(*v, '\t');
426:
427: /* Scan ahead to unescaped `Ta'. */
428: for (pp = *v; ; pp++) {
429: if (NULL == (pp = strstr(pp, "Ta")))
430: break;
431: if (pp > *v && ' ' != *(pp - 1))
432: continue;
433: if (' ' == *(pp + 2) || 0 == *(pp + 2))
434: break;
435: }
436:
1.21 kristaps 437: /*
438: * Adjust new-buffer position to be beyond delimiter
439: * mark (e.g., Ta -> end + 2).
440: */
1.20 kristaps 441: if (p && pp) {
442: *pos += pp < p ? 2 : 1;
443: p = pp < p ? pp : p;
444: } else if (p && ! pp) {
445: *pos += 1;
446: } else if (pp && ! p) {
1.17 kristaps 447: p = pp;
1.20 kristaps 448: *pos += 2;
449: } else
450: p = strchr(*v, 0);
451:
1.21 kristaps 452: /* Whitespace check for eoln case... */
1.23 ! kristaps 453: if (0 == *p && ' ' == *(p - 1) && ! (ARGS_NOWARN & fl))
1.20 kristaps 454: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
455: return(ARGS_ERROR);
456:
457: *pos += (int)(p - *v);
1.17 kristaps 458:
459: /* Strip delimiter's preceding whitespace. */
1.20 kristaps 460: pp = p - 1;
461: while (pp > *v && ' ' == *pp) {
462: if (pp > *v && '\\' == *(pp - 1))
463: break;
464: pp--;
1.17 kristaps 465: }
1.20 kristaps 466: *(pp + 1) = 0;
1.17 kristaps 467:
1.20 kristaps 468: /* Strip delimiter's proceeding whitespace. */
469: for (pp = &buf[*pos]; ' ' == *pp; pp++, (*pos)++)
470: /* Skip ahead. */ ;
1.1 kristaps 471:
1.17 kristaps 472: return(ARGS_PHRASE);
473: }
1.1 kristaps 474:
1.17 kristaps 475: /*
476: * Process a quoted literal. A quote begins with a double-quote
477: * and ends with a double-quote NOT preceded by a double-quote.
478: * Whitespace is NOT involved in literal termination.
479: */
1.1 kristaps 480:
1.17 kristaps 481: if ('\"' == buf[*pos]) {
482: *v = &buf[++(*pos)];
1.1 kristaps 483:
1.17 kristaps 484: for ( ; buf[*pos]; (*pos)++) {
485: if ('\"' != buf[*pos])
486: continue;
487: if ('\"' != buf[*pos + 1])
488: break;
489: (*pos)++;
490: }
1.1 kristaps 491:
1.17 kristaps 492: if (0 == buf[*pos]) {
1.23 ! kristaps 493: if (ARGS_NOWARN & fl)
! 494: return(ARGS_QWORD);
1.18 kristaps 495: if ( ! mdoc_pwarn(m, line, *pos, EQUOTTERM))
496: return(ARGS_ERROR);
497: return(ARGS_QWORD);
1.17 kristaps 498: }
1.1 kristaps 499:
500: buf[(*pos)++] = 0;
501:
502: if (0 == buf[*pos])
1.17 kristaps 503: return(ARGS_QWORD);
1.1 kristaps 504:
1.17 kristaps 505: while (' ' == buf[*pos])
506: (*pos)++;
1.1 kristaps 507:
1.23 ! kristaps 508: if (0 == buf[*pos] && ! (ARGS_NOWARN & fl))
1.17 kristaps 509: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
510: return(ARGS_ERROR);
1.1 kristaps 511:
1.17 kristaps 512: return(ARGS_QWORD);
1.1 kristaps 513: }
514:
1.17 kristaps 515: /*
516: * A non-quoted term progresses until either the end of line or
517: * a non-escaped whitespace.
1.1 kristaps 518: */
519:
1.17 kristaps 520: for ( ; buf[*pos]; (*pos)++)
521: if (' ' == buf[*pos] && '\\' != buf[*pos - 1])
522: break;
1.1 kristaps 523:
1.17 kristaps 524: if (0 == buf[*pos])
525: return(ARGS_WORD);
1.1 kristaps 526:
527: buf[(*pos)++] = 0;
528:
1.17 kristaps 529: while (' ' == buf[*pos])
1.1 kristaps 530: (*pos)++;
531:
1.23 ! kristaps 532: if (0 == buf[*pos] && ! (ARGS_NOWARN & fl))
1.17 kristaps 533: if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
534: return(ARGS_ERROR);
1.1 kristaps 535:
1.17 kristaps 536: return(ARGS_WORD);
1.1 kristaps 537: }
538:
539:
540: static int
541: argv_a2arg(int tok, const char *argv)
542: {
543:
544: /*
545: * Parse an argument identifier from its text. XXX - this
546: * should really be table-driven to clarify the code.
547: *
548: * If you add an argument to the list, make sure that you
549: * register it here with its one or more macros!
550: */
551:
552: switch (tok) {
553: case (MDOC_An):
1.2 kristaps 554: if (0 == strcmp(argv, "split"))
1.1 kristaps 555: return(MDOC_Split);
1.2 kristaps 556: else if (0 == strcmp(argv, "nosplit"))
1.1 kristaps 557: return(MDOC_Nosplit);
558: break;
559:
560: case (MDOC_Bd):
1.2 kristaps 561: if (0 == strcmp(argv, "ragged"))
1.1 kristaps 562: return(MDOC_Ragged);
1.2 kristaps 563: else if (0 == strcmp(argv, "unfilled"))
1.1 kristaps 564: return(MDOC_Unfilled);
1.2 kristaps 565: else if (0 == strcmp(argv, "filled"))
1.1 kristaps 566: return(MDOC_Filled);
1.2 kristaps 567: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 568: return(MDOC_Literal);
1.2 kristaps 569: else if (0 == strcmp(argv, "file"))
1.1 kristaps 570: return(MDOC_File);
1.2 kristaps 571: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 572: return(MDOC_Offset);
1.2 kristaps 573: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 574: return(MDOC_Compact);
575: break;
576:
577: case (MDOC_Bf):
1.2 kristaps 578: if (0 == strcmp(argv, "emphasis"))
1.1 kristaps 579: return(MDOC_Emphasis);
1.2 kristaps 580: else if (0 == strcmp(argv, "literal"))
1.1 kristaps 581: return(MDOC_Literal);
1.2 kristaps 582: else if (0 == strcmp(argv, "symbolic"))
1.1 kristaps 583: return(MDOC_Symbolic);
584: break;
585:
586: case (MDOC_Bk):
1.2 kristaps 587: if (0 == strcmp(argv, "words"))
1.1 kristaps 588: return(MDOC_Words);
589: break;
590:
591: case (MDOC_Bl):
1.2 kristaps 592: if (0 == strcmp(argv, "bullet"))
1.1 kristaps 593: return(MDOC_Bullet);
1.2 kristaps 594: else if (0 == strcmp(argv, "dash"))
1.1 kristaps 595: return(MDOC_Dash);
1.2 kristaps 596: else if (0 == strcmp(argv, "hyphen"))
1.1 kristaps 597: return(MDOC_Hyphen);
1.2 kristaps 598: else if (0 == strcmp(argv, "item"))
1.1 kristaps 599: return(MDOC_Item);
1.2 kristaps 600: else if (0 == strcmp(argv, "enum"))
1.1 kristaps 601: return(MDOC_Enum);
1.2 kristaps 602: else if (0 == strcmp(argv, "tag"))
1.1 kristaps 603: return(MDOC_Tag);
1.2 kristaps 604: else if (0 == strcmp(argv, "diag"))
1.1 kristaps 605: return(MDOC_Diag);
1.2 kristaps 606: else if (0 == strcmp(argv, "hang"))
1.1 kristaps 607: return(MDOC_Hang);
1.2 kristaps 608: else if (0 == strcmp(argv, "ohang"))
1.1 kristaps 609: return(MDOC_Ohang);
1.2 kristaps 610: else if (0 == strcmp(argv, "inset"))
1.1 kristaps 611: return(MDOC_Inset);
1.2 kristaps 612: else if (0 == strcmp(argv, "column"))
1.1 kristaps 613: return(MDOC_Column);
1.2 kristaps 614: else if (0 == strcmp(argv, "width"))
1.1 kristaps 615: return(MDOC_Width);
1.2 kristaps 616: else if (0 == strcmp(argv, "offset"))
1.1 kristaps 617: return(MDOC_Offset);
1.2 kristaps 618: else if (0 == strcmp(argv, "compact"))
1.1 kristaps 619: return(MDOC_Compact);
1.2 kristaps 620: else if (0 == strcmp(argv, "nested"))
1.1 kristaps 621: return(MDOC_Nested);
622: break;
623:
624: case (MDOC_Rv):
625: /* FALLTHROUGH */
626: case (MDOC_Ex):
1.2 kristaps 627: if (0 == strcmp(argv, "std"))
1.1 kristaps 628: return(MDOC_Std);
629: break;
630: default:
631: break;
632: }
633:
634: return(MDOC_ARG_MAX);
635: }
636:
637:
638: static int
1.11 kristaps 639: argv_multi(struct mdoc *m, int line,
1.1 kristaps 640: struct mdoc_argv *v, int *pos, char *buf)
641: {
1.8 kristaps 642: int c;
1.1 kristaps 643: char *p;
644:
645: for (v->sz = 0; ; v->sz++) {
646: if ('-' == buf[*pos])
647: break;
1.17 kristaps 648: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 649: if (ARGS_ERROR == c)
650: return(0);
651: else if (ARGS_EOLN == c)
652: break;
653:
1.2 kristaps 654: if (0 == v->sz % MULTI_STEP) {
655: v->value = realloc(v->value,
1.1 kristaps 656: (v->sz + MULTI_STEP) * sizeof(char *));
1.2 kristaps 657: if (NULL == v->value) {
1.11 kristaps 658: (void)mdoc_nerr(m, m->last, EMALLOC);
1.2 kristaps 659: return(ARGV_ERROR);
660: }
661: }
1.1 kristaps 662: if (NULL == (v->value[(int)v->sz] = strdup(p)))
1.11 kristaps 663: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 664: }
665:
1.7 kristaps 666: return(1);
1.1 kristaps 667: }
668:
669:
670: static int
1.11 kristaps 671: argv_opt_single(struct mdoc *m, int line,
1.1 kristaps 672: struct mdoc_argv *v, int *pos, char *buf)
673: {
674: int c;
675: char *p;
676:
677: if ('-' == buf[*pos])
678: return(1);
679:
1.17 kristaps 680: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 681: if (ARGS_ERROR == c)
682: return(0);
683: if (ARGS_EOLN == c)
684: return(1);
685:
686: v->sz = 1;
687: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.11 kristaps 688: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 689: if (NULL == (v->value[0] = strdup(p)))
1.11 kristaps 690: return(mdoc_nerr(m, m->last, EMALLOC));
1.2 kristaps 691:
1.1 kristaps 692: return(1);
693: }
694:
695:
696: /*
697: * Parse a single, mandatory value from the stream.
698: */
699: static int
1.11 kristaps 700: argv_single(struct mdoc *m, int line,
1.1 kristaps 701: struct mdoc_argv *v, int *pos, char *buf)
702: {
703: int c, ppos;
704: char *p;
705:
706: ppos = *pos;
707:
1.17 kristaps 708: c = args(m, line, pos, buf, 0, &p);
1.1 kristaps 709: if (ARGS_ERROR == c)
710: return(0);
711: if (ARGS_EOLN == c)
1.11 kristaps 712: return(mdoc_perr(m, line, ppos, EARGVAL));
1.1 kristaps 713:
714: v->sz = 1;
715: if (NULL == (v->value = calloc(1, sizeof(char *))))
1.11 kristaps 716: return(mdoc_nerr(m, m->last, EMALLOC));
1.1 kristaps 717: if (NULL == (v->value[0] = strdup(p)))
1.11 kristaps 718: return(mdoc_nerr(m, m->last, EMALLOC));
1.2 kristaps 719:
1.1 kristaps 720: return(1);
721: }
722:
723:
724: /*
725: * Determine rules for parsing arguments. Arguments can either accept
726: * no parameters, an optional single parameter, one parameter, or
727: * multiple parameters.
728: */
729: static int
730: argv(struct mdoc *mdoc, int line,
731: struct mdoc_argv *v, int *pos, char *buf)
732: {
733:
734: v->sz = 0;
735: v->value = NULL;
736:
737: switch (mdoc_argvflags[v->arg]) {
738: case (ARGV_SINGLE):
739: return(argv_single(mdoc, line, v, pos, buf));
740: case (ARGV_MULTI):
741: return(argv_multi(mdoc, line, v, pos, buf));
742: case (ARGV_OPT_SINGLE):
743: return(argv_opt_single(mdoc, line, v, pos, buf));
744: default:
745: /* ARGV_NONE */
746: break;
747: }
748:
749: return(1);
750: }
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