Annotation of mandoc/argv.c, Revision 1.47
1.47 ! kristaps 1: /* $Id: argv.c,v 1.46 2009/03/10 15:01:54 kristaps Exp $ */
1.1 kristaps 2: /*
3: * Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the
7: * above copyright notice and this permission notice appear in all
8: * copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
11: * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
12: * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
13: * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
14: * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
15: * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
16: * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17: * PERFORMANCE OF THIS SOFTWARE.
18: */
1.44 kristaps 19: #include <sys/types.h>
20:
1.1 kristaps 21: #include <assert.h>
22: #include <ctype.h>
23: #include <err.h>
24: #include <stdlib.h>
25: #include <stdio.h>
26: #include <string.h>
27:
28: #include "private.h"
29:
1.20 kristaps 30: /*
1.27 kristaps 31: * Routines to parse arguments of macros. Arguments follow the syntax
32: * of `-arg [val [valN...]]'. Arguments come in all types: quoted
33: * arguments, multiple arguments per value, no-value arguments, etc.
1.39 kristaps 34: *
35: * There's no limit to the number or arguments that may be allocated.
1.20 kristaps 36: */
37:
1.24 kristaps 38: #define ARGS_QUOTED (1 << 0)
39: #define ARGS_DELIM (1 << 1)
40: #define ARGS_TABSEP (1 << 2)
1.38 kristaps 41: #define ARGS_ARGVLIKE (1 << 3)
1.15 kristaps 42:
1.36 kristaps 43: #define ARGV_NONE (1 << 0)
44: #define ARGV_SINGLE (1 << 1)
45: #define ARGV_MULTI (1 << 2)
46: #define ARGV_OPT_SINGLE (1 << 3)
47:
1.39 kristaps 48: enum mwarn {
49: WQUOTPARM,
50: WARGVPARM,
51: WCOLEMPTY,
52: WTAILWS
53: };
54:
55: enum merr {
56: EQUOTTERM,
57: EARGVAL
58: };
59:
1.30 kristaps 60: static int argv_a2arg(int, const char *);
1.26 kristaps 61: static int args(struct mdoc *, int, int *,
62: char *, int, char **);
1.37 kristaps 63: static int argv(struct mdoc *, int, int,
1.39 kristaps 64: struct mdoc_argv *, int *, char *);
1.26 kristaps 65: static int argv_single(struct mdoc *, int,
1.39 kristaps 66: struct mdoc_argv *, int *, char *);
1.36 kristaps 67: static int argv_opt_single(struct mdoc *, int,
1.39 kristaps 68: struct mdoc_argv *, int *, char *);
1.26 kristaps 69: static int argv_multi(struct mdoc *, int,
1.39 kristaps 70: struct mdoc_argv *, int *, char *);
71: static int pwarn(struct mdoc *, int, int, enum mwarn);
72: static int perr(struct mdoc *, int, int, enum merr);
1.22 kristaps 73:
1.36 kristaps 74: /* Per-argument flags. */
75:
76: static int mdoc_argvflags[MDOC_ARG_MAX] = {
77: ARGV_NONE, /* MDOC_Split */
78: ARGV_NONE, /* MDOC_Nosplit */
79: ARGV_NONE, /* MDOC_Ragged */
80: ARGV_NONE, /* MDOC_Unfilled */
81: ARGV_NONE, /* MDOC_Literal */
82: ARGV_NONE, /* MDOC_File */
83: ARGV_SINGLE, /* MDOC_Offset */
84: ARGV_NONE, /* MDOC_Bullet */
85: ARGV_NONE, /* MDOC_Dash */
86: ARGV_NONE, /* MDOC_Hyphen */
87: ARGV_NONE, /* MDOC_Item */
88: ARGV_NONE, /* MDOC_Enum */
89: ARGV_NONE, /* MDOC_Tag */
90: ARGV_NONE, /* MDOC_Diag */
91: ARGV_NONE, /* MDOC_Hang */
92: ARGV_NONE, /* MDOC_Ohang */
93: ARGV_NONE, /* MDOC_Inset */
94: ARGV_MULTI, /* MDOC_Column */
95: ARGV_SINGLE, /* MDOC_Width */
96: ARGV_NONE, /* MDOC_Compact */
1.37 kristaps 97: ARGV_SINGLE, /* MDOC_Std */
1.36 kristaps 98: ARGV_NONE, /* MDOC_Filled */
99: ARGV_NONE, /* MDOC_Words */
100: ARGV_NONE, /* MDOC_Emphasis */
101: ARGV_NONE /* MDOC_Symbolic */
102: };
103:
1.22 kristaps 104: static int mdoc_argflags[MDOC_MAX] = {
105: 0, /* \" */
106: 0, /* Dd */
107: 0, /* Dt */
108: 0, /* Os */
109: 0, /* Sh */
110: 0, /* Ss */
111: ARGS_DELIM, /* Pp */
112: ARGS_DELIM, /* D1 */
113: ARGS_DELIM, /* Dl */
114: 0, /* Bd */
115: 0, /* Ed */
116: 0, /* Bl */
117: 0, /* El */
1.32 kristaps 118: 0, /* It */
1.22 kristaps 119: ARGS_DELIM, /* Ad */
120: ARGS_DELIM, /* An */
121: ARGS_DELIM, /* Ar */
122: ARGS_QUOTED, /* Cd */
123: ARGS_DELIM, /* Cm */
124: ARGS_DELIM, /* Dv */
125: ARGS_DELIM, /* Er */
126: ARGS_DELIM, /* Ev */
127: 0, /* Ex */
128: ARGS_DELIM | ARGS_QUOTED, /* Fa */
129: 0, /* Fd */
130: ARGS_DELIM, /* Fl */
131: ARGS_DELIM | ARGS_QUOTED, /* Fn */
132: ARGS_DELIM | ARGS_QUOTED, /* Ft */
133: ARGS_DELIM, /* Ic */
134: 0, /* In */
135: ARGS_DELIM, /* Li */
136: 0, /* Nd */
137: ARGS_DELIM, /* Nm */
138: ARGS_DELIM, /* Op */
139: 0, /* Ot */
140: ARGS_DELIM, /* Pa */
141: 0, /* Rv */
1.38 kristaps 142: ARGS_DELIM | ARGS_ARGVLIKE, /* St */
1.22 kristaps 143: ARGS_DELIM, /* Va */
144: ARGS_DELIM, /* Vt */
145: ARGS_DELIM, /* Xr */
146: ARGS_QUOTED, /* %A */
147: ARGS_QUOTED, /* %B */
148: ARGS_QUOTED, /* %D */
149: ARGS_QUOTED, /* %I */
150: ARGS_QUOTED, /* %J */
151: ARGS_QUOTED, /* %N */
152: ARGS_QUOTED, /* %O */
153: ARGS_QUOTED, /* %P */
154: ARGS_QUOTED, /* %R */
155: ARGS_QUOTED, /* %T */
156: ARGS_QUOTED, /* %V */
157: ARGS_DELIM, /* Ac */
158: 0, /* Ao */
159: ARGS_DELIM, /* Aq */
160: ARGS_DELIM, /* At */
161: ARGS_DELIM, /* Bc */
162: 0, /* Bf */
163: 0, /* Bo */
164: ARGS_DELIM, /* Bq */
165: ARGS_DELIM, /* Bsx */
166: ARGS_DELIM, /* Bx */
167: 0, /* Db */
168: ARGS_DELIM, /* Dc */
169: 0, /* Do */
170: ARGS_DELIM, /* Dq */
171: ARGS_DELIM, /* Ec */
172: 0, /* Ef */
173: ARGS_DELIM, /* Em */
174: 0, /* Eo */
175: ARGS_DELIM, /* Fx */
176: ARGS_DELIM, /* Ms */
177: ARGS_DELIM, /* No */
178: ARGS_DELIM, /* Ns */
179: ARGS_DELIM, /* Nx */
180: ARGS_DELIM, /* Ox */
181: ARGS_DELIM, /* Pc */
182: ARGS_DELIM, /* Pf */
183: 0, /* Po */
184: ARGS_DELIM, /* Pq */
185: ARGS_DELIM, /* Qc */
186: ARGS_DELIM, /* Ql */
187: 0, /* Qo */
188: ARGS_DELIM, /* Qq */
189: 0, /* Re */
190: 0, /* Rs */
191: ARGS_DELIM, /* Sc */
192: 0, /* So */
193: ARGS_DELIM, /* Sq */
194: 0, /* Sm */
195: ARGS_DELIM, /* Sx */
196: ARGS_DELIM, /* Sy */
197: ARGS_DELIM, /* Tn */
198: ARGS_DELIM, /* Ux */
199: ARGS_DELIM, /* Xc */
200: 0, /* Xo */
201: 0, /* Fo */
202: 0, /* Fc */
203: 0, /* Oo */
204: ARGS_DELIM, /* Oc */
205: 0, /* Bk */
206: 0, /* Ek */
207: 0, /* Bt */
208: 0, /* Hf */
209: 0, /* Fr */
210: 0, /* Ud */
1.38 kristaps 211: 0, /* Lb */
1.42 kristaps 212: 0, /* Ap */
1.45 kristaps 213: ARGS_DELIM, /* Lp */
214: ARGS_DELIM | ARGS_QUOTED, /* Lk */
215: ARGS_DELIM | ARGS_QUOTED, /* Mt */
1.22 kristaps 216: };
217:
1.1 kristaps 218:
1.39 kristaps 219: /*
220: * Parse an argument from line text. This comes in the form of -key
221: * [value0...], which may either have a single mandatory value, at least
222: * one mandatory value, an optional single value, or no value.
223: */
224: int
225: mdoc_argv(struct mdoc *mdoc, int line, int tok,
226: struct mdoc_arg **v, int *pos, char *buf)
227: {
228: int i;
1.46 kristaps 229: char *p, sv;
1.39 kristaps 230: struct mdoc_argv tmp;
231: struct mdoc_arg *arg;
232:
233: if (0 == buf[*pos])
234: return(ARGV_EOLN);
235:
236: assert( ! isspace((u_char)buf[*pos]));
237:
238: if ('-' != buf[*pos])
239: return(ARGV_WORD);
240:
241: i = *pos;
242: p = &buf[++(*pos)];
243:
244: assert(*pos > 0);
245:
246: /* LINTED */
247: while (buf[*pos]) {
248: if (isspace((u_char)buf[*pos]))
249: if ('\\' != buf[*pos - 1])
250: break;
251: (*pos)++;
252: }
253:
1.46 kristaps 254: /*
255: * XXX: save the nullified byte as we'll restore it if this
1.47 ! kristaps 256: * doesn't end up being a command after all. This is a little
! 257: * bit hacky. I don't like it, but it works for now.
1.46 kristaps 258: */
259:
1.47 ! kristaps 260: sv = 0;
1.46 kristaps 261: if (buf[*pos]) {
262: sv = buf[*pos];
1.39 kristaps 263: buf[(*pos)++] = 0;
1.46 kristaps 264: }
1.39 kristaps 265:
266: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
267: tmp.line = line;
268: tmp.pos = *pos;
269:
270: /*
271: * We now parse out the per-macro arguments. XXX - this can be
272: * made much cleaner using per-argument tables. See argv_a2arg
273: * for details.
274: */
275:
276: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
1.47 ! kristaps 277: /* XXX - restore saved byte. */
! 278: if (sv)
! 279: buf[*pos - 1] = sv;
1.39 kristaps 280: if ( ! pwarn(mdoc, line, i, WARGVPARM))
281: return(ARGV_ERROR);
282: return(ARGV_WORD);
283: }
284:
285: while (buf[*pos] && isspace((u_char)buf[*pos]))
286: (*pos)++;
287:
288: /* FIXME: whitespace if no value. */
289:
290: if ( ! argv(mdoc, tok, line, &tmp, pos, buf))
291: return(ARGV_ERROR);
292:
293: if (NULL == (arg = *v)) {
1.40 kristaps 294: *v = xcalloc(1, sizeof(struct mdoc_arg));
1.39 kristaps 295: arg = *v;
1.40 kristaps 296: }
1.39 kristaps 297:
298: arg->argc++;
299: arg->argv = xrealloc(arg->argv, arg->argc *
1.40 kristaps 300: sizeof(struct mdoc_argv));
1.39 kristaps 301:
302: (void)memcpy(&arg->argv[(int)arg->argc - 1],
303: &tmp, sizeof(struct mdoc_argv));
304:
305: return(ARGV_ARG);
306: }
307:
308:
309: void
310: mdoc_argv_free(struct mdoc_arg *p)
311: {
312: int i, j;
313:
1.41 kristaps 314: if (NULL == p)
315: return;
316:
1.40 kristaps 317: if (p->refcnt) {
318: --(p->refcnt);
319: if (p->refcnt)
320: return;
321: }
322:
323: assert(p->argc);
1.39 kristaps 324:
325: /* LINTED */
326: for (i = 0; i < (int)p->argc; i++) {
327: if (0 == p->argv[i].sz)
328: continue;
329: /* LINTED */
330: for (j = 0; j < (int)p->argv[i].sz; j++)
331: free(p->argv[i].value[j]);
1.40 kristaps 332:
1.39 kristaps 333: free(p->argv[i].value);
334: }
335:
1.40 kristaps 336: free(p->argv);
1.39 kristaps 337: free(p);
338: }
339:
340:
341:
1.24 kristaps 342: static int
1.39 kristaps 343: perr(struct mdoc *mdoc, int line, int pos, enum merr code)
1.25 kristaps 344: {
1.39 kristaps 345: char *p;
346:
347: p = NULL;
1.25 kristaps 348:
349: switch (code) {
350: case (EQUOTTERM):
1.39 kristaps 351: p = "unterminated quoted parameter";
1.25 kristaps 352: break;
353: case (EARGVAL):
1.39 kristaps 354: p = "argument requires a value";
1.25 kristaps 355: break;
356: }
1.39 kristaps 357:
358: assert(p);
359: return(mdoc_perr(mdoc, line, pos, p));
1.25 kristaps 360: }
361:
362:
363: static int
1.39 kristaps 364: pwarn(struct mdoc *mdoc, int line, int pos, enum mwarn code)
1.24 kristaps 365: {
1.39 kristaps 366: char *p;
1.24 kristaps 367: int c;
368:
1.39 kristaps 369: p = NULL;
370: c = WARN_SYNTAX;
371:
1.24 kristaps 372: switch (code) {
373: case (WQUOTPARM):
1.39 kristaps 374: p = "unexpected quoted parameter";
1.24 kristaps 375: break;
376: case (WARGVPARM):
1.39 kristaps 377: p = "argument-like parameter";
1.24 kristaps 378: break;
1.25 kristaps 379: case (WCOLEMPTY):
1.39 kristaps 380: p = "last list column is empty";
381: c = WARN_COMPAT;
1.25 kristaps 382: break;
383: case (WTAILWS):
1.39 kristaps 384: p = "trailing whitespace";
385: c = WARN_COMPAT;
1.25 kristaps 386: break;
1.24 kristaps 387: }
1.39 kristaps 388:
389: assert(p);
390: return(mdoc_pwarn(mdoc, line, pos, c, p));
1.24 kristaps 391: }
392:
393:
1.2 kristaps 394: int
1.22 kristaps 395: mdoc_args(struct mdoc *mdoc, int line,
396: int *pos, char *buf, int tok, char **v)
1.1 kristaps 397: {
1.26 kristaps 398: int fl, c, i;
1.22 kristaps 399: struct mdoc_node *n;
400:
1.24 kristaps 401: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
402:
403: /*
1.36 kristaps 404: * Override per-macro argument flags with context-specific ones.
405: * As of now, this is only valid for `It' depending on its list
406: * context.
1.24 kristaps 407: */
408:
1.36 kristaps 409: switch (tok) {
410: case (MDOC_It):
1.24 kristaps 411: for (n = mdoc->last; n; n = n->parent)
1.36 kristaps 412: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
413: break;
414:
1.24 kristaps 415: assert(n);
1.39 kristaps 416: c = (int)(n->args ? n->args->argc : 0);
1.24 kristaps 417: assert(c > 0);
1.26 kristaps 418:
1.36 kristaps 419: /*
420: * Using `Bl -column' adds ARGS_TABSEP to the arguments
421: * and invalidates ARGS_DELIM. Using `Bl -diag' allows
422: * for quoted arguments.
423: */
424:
1.26 kristaps 425: /* LINTED */
1.24 kristaps 426: for (i = 0; i < c; i++) {
1.39 kristaps 427: switch (n->args->argv[i].arg) {
1.35 kristaps 428: case (MDOC_Column):
429: fl |= ARGS_TABSEP;
430: fl &= ~ARGS_DELIM;
431: i = c;
432: break;
433: case (MDOC_Diag):
434: fl |= ARGS_QUOTED;
435: i = c;
436: break;
437: default:
438: break;
439: }
1.24 kristaps 440: }
1.39 kristaps 441: break;
1.36 kristaps 442: default:
443: break;
1.24 kristaps 444: }
445:
1.36 kristaps 446: /* Continue parsing the arguments themselves... */
447:
1.26 kristaps 448: return(args(mdoc, line, pos, buf, fl, v));
449: }
450:
451:
452: static int
453: args(struct mdoc *mdoc, int line,
454: int *pos, char *buf, int fl, char **v)
455: {
1.31 kristaps 456: int i;
1.26 kristaps 457: char *p, *pp;
458:
459: assert(*pos > 0);
460:
461: if (0 == buf[*pos])
462: return(ARGS_EOLN);
463:
464: if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
465: if ( ! pwarn(mdoc, line, *pos, WQUOTPARM))
466: return(ARGS_ERROR);
467:
1.38 kristaps 468: if ( ! (fl & ARGS_ARGVLIKE) && '-' == buf[*pos])
1.26 kristaps 469: if ( ! pwarn(mdoc, line, *pos, WARGVPARM))
470: return(ARGS_ERROR);
471:
1.24 kristaps 472: /*
473: * If the first character is a delimiter and we're to look for
474: * delimited strings, then pass down the buffer seeing if it
475: * follows the pattern of [[::delim::][ ]+]+.
476: */
477:
1.2 kristaps 478: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
1.31 kristaps 479: for (i = *pos; buf[i]; ) {
480: if ( ! mdoc_iscdelim(buf[i]))
1.2 kristaps 481: break;
482: i++;
1.34 kristaps 483: /* There must be at least one space... */
1.37 kristaps 484: if (0 == buf[i] || ! isspace((u_char)buf[i]))
1.34 kristaps 485: break;
486: i++;
1.37 kristaps 487: while (buf[i] && isspace((u_char)buf[i]))
1.2 kristaps 488: i++;
489: }
490: if (0 == buf[i]) {
491: *v = &buf[*pos];
492: return(ARGS_PUNCT);
493: }
494: }
495:
1.24 kristaps 496: /* First parse non-quoted strings. */
1.1 kristaps 497:
1.17 kristaps 498: if ('\"' != buf[*pos] || ! (ARGS_QUOTED & fl)) {
1.1 kristaps 499: *v = &buf[*pos];
500:
1.24 kristaps 501: /*
502: * Thar be dragons here! If we're tab-separated, search
503: * ahead for either a tab or the `Ta' macro. If a tab
504: * is detected, it mustn't be escaped; if a `Ta' is
505: * detected, it must be space-buffered before and after.
506: * If either of these hold true, then prune out the
507: * extra spaces and call it an argument.
508: */
509:
510: if (ARGS_TABSEP & fl) {
511: /* Scan ahead to unescaped tab. */
1.12 kristaps 512:
1.24 kristaps 513: for (p = *v; ; p++) {
514: if (NULL == (p = strchr(p, '\t')))
515: break;
516: if (p == *v)
517: break;
518: if ('\\' != *(p - 1))
1.12 kristaps 519: break;
520: }
1.24 kristaps 521:
522: /* Scan ahead to unescaped `Ta'. */
523:
524: for (pp = *v; ; pp++) {
525: if (NULL == (pp = strstr(pp, "Ta")))
526: break;
527: if (pp > *v && ' ' != *(pp - 1))
528: continue;
529: if (' ' == *(pp + 2) || 0 == *(pp + 2))
530: break;
531: }
532:
533: /* Choose delimiter tab/Ta. */
534:
535: if (p && pp)
536: p = (p < pp ? p : pp);
537: else if ( ! p && pp)
538: p = pp;
539:
540: /* Strip delimiter's preceding whitespace. */
541:
542: if (p && p > *v) {
543: pp = p - 1;
544: while (pp > *v && ' ' == *pp)
545: pp--;
546: if (pp == *v && ' ' == *pp)
547: *pp = 0;
548: else if (' ' == *pp)
549: *(pp + 1) = 0;
550: }
551:
552: /* ...in- and proceding whitespace. */
553:
554: if (p && ('\t' != *p)) {
555: *p++ = 0;
556: *p++ = 0;
557: } else if (p)
558: *p++ = 0;
559:
560: if (p) {
561: while (' ' == *p)
562: p++;
563: if (0 != *p)
564: *(p - 1) = 0;
1.33 kristaps 565: *pos += (int)(p - *v);
1.24 kristaps 566: }
567:
1.25 kristaps 568: if (p && 0 == *p)
569: if ( ! pwarn(mdoc, line, *pos, WCOLEMPTY))
570: return(0);
571: if (p && 0 == *p && p > *v && ' ' == *(p - 1))
572: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
573: return(0);
574:
1.26 kristaps 575: if (p)
576: return(ARGS_WORD);
577:
1.24 kristaps 578: /* Configure the eoln case, too. */
579:
1.26 kristaps 580: p = strchr(*v, 0);
581: assert(p);
582:
583: if (p > *v && ' ' == *(p - 1))
584: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
585: return(0);
1.33 kristaps 586: *pos += (int)(p - *v);
1.24 kristaps 587:
588: return(ARGS_WORD);
589: }
1.46 kristaps 590:
1.24 kristaps 591: /* Do non-tabsep look-ahead here. */
592:
593: if ( ! (ARGS_TABSEP & fl))
1.31 kristaps 594: while (buf[*pos]) {
1.37 kristaps 595: if (isspace((u_char)buf[*pos]))
1.17 kristaps 596: if ('\\' != buf[*pos - 1])
597: break;
1.12 kristaps 598: (*pos)++;
1.17 kristaps 599: }
1.1 kristaps 600:
601: if (0 == buf[*pos])
1.2 kristaps 602: return(ARGS_WORD);
1.1 kristaps 603:
604: buf[(*pos)++] = 0;
1.12 kristaps 605:
1.1 kristaps 606: if (0 == buf[*pos])
1.2 kristaps 607: return(ARGS_WORD);
1.1 kristaps 608:
1.12 kristaps 609: if ( ! (ARGS_TABSEP & fl))
1.37 kristaps 610: while (buf[*pos] && isspace((u_char)buf[*pos]))
1.12 kristaps 611: (*pos)++;
1.1 kristaps 612:
613: if (buf[*pos])
1.2 kristaps 614: return(ARGS_WORD);
1.1 kristaps 615:
1.25 kristaps 616: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
1.2 kristaps 617: return(ARGS_ERROR);
1.1 kristaps 618:
1.2 kristaps 619: return(ARGS_WORD);
620: }
621:
622: /*
623: * If we're a quoted string (and quoted strings are allowed),
624: * then parse ahead to the next quote. If none's found, it's an
1.4 kristaps 625: * error. After, parse to the next word.
1.2 kristaps 626: */
1.1 kristaps 627:
628: *v = &buf[++(*pos)];
629:
630: while (buf[*pos] && '\"' != buf[*pos])
631: (*pos)++;
632:
633: if (0 == buf[*pos]) {
1.25 kristaps 634: (void)perr(mdoc, line, *pos, EQUOTTERM);
1.2 kristaps 635: return(ARGS_ERROR);
1.1 kristaps 636: }
637:
638: buf[(*pos)++] = 0;
639: if (0 == buf[*pos])
1.19 kristaps 640: return(ARGS_QWORD);
1.1 kristaps 641:
1.37 kristaps 642: while (buf[*pos] && isspace((u_char)buf[*pos]))
1.1 kristaps 643: (*pos)++;
644:
645: if (buf[*pos])
1.19 kristaps 646: return(ARGS_QWORD);
1.1 kristaps 647:
1.25 kristaps 648: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
1.2 kristaps 649: return(ARGS_ERROR);
650:
1.19 kristaps 651: return(ARGS_QWORD);
1.1 kristaps 652: }
653:
654:
1.2 kristaps 655: static int
1.30 kristaps 656: argv_a2arg(int tok, const char *argv)
1.1 kristaps 657: {
658:
1.36 kristaps 659: /*
660: * Parse an argument identifier from its text. XXX - this
661: * should really be table-driven to clarify the code.
662: *
663: * If you add an argument to the list, make sure that you
664: * register it here with its one or more macros!
665: */
666:
1.1 kristaps 667: switch (tok) {
1.6 kristaps 668: case (MDOC_An):
669: if (xstrcmp(argv, "split"))
670: return(MDOC_Split);
671: else if (xstrcmp(argv, "nosplit"))
672: return(MDOC_Nosplit);
673: break;
674:
1.2 kristaps 675: case (MDOC_Bd):
1.1 kristaps 676: if (xstrcmp(argv, "ragged"))
677: return(MDOC_Ragged);
678: else if (xstrcmp(argv, "unfilled"))
679: return(MDOC_Unfilled);
1.13 kristaps 680: else if (xstrcmp(argv, "filled"))
681: return(MDOC_Filled);
1.1 kristaps 682: else if (xstrcmp(argv, "literal"))
683: return(MDOC_Literal);
684: else if (xstrcmp(argv, "file"))
685: return(MDOC_File);
686: else if (xstrcmp(argv, "offset"))
687: return(MDOC_Offset);
1.2 kristaps 688: break;
689:
1.8 kristaps 690: case (MDOC_Bf):
691: if (xstrcmp(argv, "emphasis"))
692: return(MDOC_Emphasis);
693: else if (xstrcmp(argv, "literal"))
694: return(MDOC_Literal);
695: else if (xstrcmp(argv, "symbolic"))
696: return(MDOC_Symbolic);
697: break;
698:
1.7 kristaps 699: case (MDOC_Bk):
700: if (xstrcmp(argv, "words"))
701: return(MDOC_Words);
702: break;
703:
1.2 kristaps 704: case (MDOC_Bl):
705: if (xstrcmp(argv, "bullet"))
1.1 kristaps 706: return(MDOC_Bullet);
707: else if (xstrcmp(argv, "dash"))
708: return(MDOC_Dash);
709: else if (xstrcmp(argv, "hyphen"))
710: return(MDOC_Hyphen);
711: else if (xstrcmp(argv, "item"))
712: return(MDOC_Item);
713: else if (xstrcmp(argv, "enum"))
714: return(MDOC_Enum);
715: else if (xstrcmp(argv, "tag"))
716: return(MDOC_Tag);
717: else if (xstrcmp(argv, "diag"))
718: return(MDOC_Diag);
719: else if (xstrcmp(argv, "hang"))
720: return(MDOC_Hang);
721: else if (xstrcmp(argv, "ohang"))
722: return(MDOC_Ohang);
723: else if (xstrcmp(argv, "inset"))
724: return(MDOC_Inset);
725: else if (xstrcmp(argv, "column"))
726: return(MDOC_Column);
727: else if (xstrcmp(argv, "width"))
728: return(MDOC_Width);
1.2 kristaps 729: else if (xstrcmp(argv, "offset"))
730: return(MDOC_Offset);
1.1 kristaps 731: else if (xstrcmp(argv, "compact"))
732: return(MDOC_Compact);
1.2 kristaps 733: break;
1.3 kristaps 734:
735: case (MDOC_Rv):
736: /* FALLTHROUGH */
737: case (MDOC_Ex):
738: if (xstrcmp(argv, "std"))
739: return(MDOC_Std);
740: break;
1.1 kristaps 741: default:
1.8 kristaps 742: break;
1.1 kristaps 743: }
744:
745: return(MDOC_ARG_MAX);
746: }
747:
748:
1.2 kristaps 749: static int
1.26 kristaps 750: argv_multi(struct mdoc *mdoc, int line,
1.39 kristaps 751: struct mdoc_argv *v, int *pos, char *buf)
1.12 kristaps 752: {
753: int c, ppos;
754: char *p;
755:
756: ppos = *pos;
757:
1.39 kristaps 758: for (v->sz = 0; ; v->sz++) {
1.12 kristaps 759: if ('-' == buf[*pos])
760: break;
1.26 kristaps 761: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
1.39 kristaps 762: if (ARGS_ERROR == c)
1.12 kristaps 763: return(0);
1.39 kristaps 764: else if (ARGS_EOLN == c)
1.12 kristaps 765: break;
1.39 kristaps 766:
767: if (0 == v->sz % 5)
768: v->value = xrealloc(v->value,
769: (v->sz + 5) * sizeof(char *));
770:
1.40 kristaps 771: v->value[(int)v->sz] = xstrdup(p);
1.12 kristaps 772: }
773:
1.39 kristaps 774: if (v->sz)
1.12 kristaps 775: return(1);
776:
1.39 kristaps 777: return(perr(mdoc, line, ppos, EARGVAL));
1.12 kristaps 778: }
779:
780:
781: static int
1.36 kristaps 782: argv_opt_single(struct mdoc *mdoc, int line,
1.39 kristaps 783: struct mdoc_argv *v, int *pos, char *buf)
1.36 kristaps 784: {
1.39 kristaps 785: int c;
1.36 kristaps 786: char *p;
787:
788: if ('-' == buf[*pos])
789: return(1);
790:
791: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
792: if (ARGS_ERROR == c)
793: return(0);
794: if (ARGS_EOLN == c)
795: return(1);
796:
797: v->sz = 1;
798: v->value = xcalloc(1, sizeof(char *));
1.40 kristaps 799: v->value[0] = xstrdup(p);
1.36 kristaps 800: return(1);
801: }
802:
803:
804: /*
805: * Parse a single, mandatory value from the stream.
806: */
807: static int
1.26 kristaps 808: argv_single(struct mdoc *mdoc, int line,
1.39 kristaps 809: struct mdoc_argv *v, int *pos, char *buf)
1.1 kristaps 810: {
1.12 kristaps 811: int c, ppos;
1.1 kristaps 812: char *p;
813:
814: ppos = *pos;
815:
1.26 kristaps 816: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
1.12 kristaps 817: if (ARGS_ERROR == c)
818: return(0);
819: if (ARGS_EOLN == c)
1.36 kristaps 820: return(perr(mdoc, line, ppos, EARGVAL));
1.12 kristaps 821:
822: v->sz = 1;
823: v->value = xcalloc(1, sizeof(char *));
1.40 kristaps 824: v->value[0] = xstrdup(p);
1.12 kristaps 825: return(1);
826: }
827:
828:
1.36 kristaps 829: /*
830: * Determine rules for parsing arguments. Arguments can either accept
831: * no parameters, an optional single parameter, one parameter, or
832: * multiple parameters.
833: */
1.12 kristaps 834: static int
1.37 kristaps 835: argv(struct mdoc *mdoc, int tok, int line,
1.39 kristaps 836: struct mdoc_argv *v, int *pos, char *buf)
1.12 kristaps 837: {
1.37 kristaps 838: int fl;
1.12 kristaps 839:
840: v->sz = 0;
841: v->value = NULL;
1.37 kristaps 842: fl = mdoc_argvflags[v->arg];
1.12 kristaps 843:
1.37 kristaps 844: /*
845: * Override the default per-argument value.
846: */
847:
848: switch (tok) {
849: case (MDOC_Ex):
850: fl = ARGV_OPT_SINGLE;
851: break;
852: default:
853: break;
854: }
855:
856: switch (fl) {
1.36 kristaps 857: case (ARGV_SINGLE):
1.26 kristaps 858: return(argv_single(mdoc, line, v, pos, buf));
1.36 kristaps 859: case (ARGV_MULTI):
1.26 kristaps 860: return(argv_multi(mdoc, line, v, pos, buf));
1.36 kristaps 861: case (ARGV_OPT_SINGLE):
862: return(argv_opt_single(mdoc, line, v, pos, buf));
1.1 kristaps 863: default:
1.36 kristaps 864: /* ARGV_NONE */
1.6 kristaps 865: break;
1.1 kristaps 866: }
867:
868: return(1);
869: }
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