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1.1 ! kristaps 1: /* $Id: argv.c,v 1.57 2009/03/23 14:31:58 kristaps Exp $ */
! 2: /*
! 3: * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@openbsd.org>
! 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: */
! 19: #include <sys/types.h>
! 20:
! 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 "libmdoc.h"
! 29:
! 30: /*
! 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.
! 34: *
! 35: * There's no limit to the number or arguments that may be allocated.
! 36: */
! 37:
! 38: #define ARGS_QUOTED (1 << 0)
! 39: #define ARGS_DELIM (1 << 1)
! 40: #define ARGS_TABSEP (1 << 2)
! 41: #define ARGS_ARGVLIKE (1 << 3)
! 42:
! 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:
! 48: #define MULTI_STEP 5
! 49:
! 50: enum mwarn {
! 51: WQUOTPARM,
! 52: WARGVPARM,
! 53: WCOLEMPTY,
! 54: WTAILWS
! 55: };
! 56:
! 57: enum merr {
! 58: EQUOTTERM,
! 59: EARGVAL
! 60: };
! 61:
! 62: static int argv_a2arg(int, const char *);
! 63: static int args(struct mdoc *, int, int *,
! 64: char *, int, char **);
! 65: static int argv(struct mdoc *, int,
! 66: struct mdoc_argv *, int *, char *);
! 67: static int argv_single(struct mdoc *, int,
! 68: struct mdoc_argv *, int *, char *);
! 69: static int argv_opt_single(struct mdoc *, int,
! 70: struct mdoc_argv *, int *, char *);
! 71: static int argv_multi(struct mdoc *, int,
! 72: struct mdoc_argv *, int *, char *);
! 73: static int pwarn(struct mdoc *, int, int, enum mwarn);
! 74: static int perr(struct mdoc *, int, int, enum merr);
! 75:
! 76: /* Per-argument flags. */
! 77:
! 78: static int mdoc_argvflags[MDOC_ARG_MAX] = {
! 79: ARGV_NONE, /* MDOC_Split */
! 80: ARGV_NONE, /* MDOC_Nosplit */
! 81: ARGV_NONE, /* MDOC_Ragged */
! 82: ARGV_NONE, /* MDOC_Unfilled */
! 83: ARGV_NONE, /* MDOC_Literal */
! 84: ARGV_NONE, /* MDOC_File */
! 85: ARGV_SINGLE, /* MDOC_Offset */
! 86: ARGV_NONE, /* MDOC_Bullet */
! 87: ARGV_NONE, /* MDOC_Dash */
! 88: ARGV_NONE, /* MDOC_Hyphen */
! 89: ARGV_NONE, /* MDOC_Item */
! 90: ARGV_NONE, /* MDOC_Enum */
! 91: ARGV_NONE, /* MDOC_Tag */
! 92: ARGV_NONE, /* MDOC_Diag */
! 93: ARGV_NONE, /* MDOC_Hang */
! 94: ARGV_NONE, /* MDOC_Ohang */
! 95: ARGV_NONE, /* MDOC_Inset */
! 96: ARGV_MULTI, /* MDOC_Column */
! 97: ARGV_SINGLE, /* MDOC_Width */
! 98: ARGV_NONE, /* MDOC_Compact */
! 99: ARGV_OPT_SINGLE, /* MDOC_Std */
! 100: ARGV_NONE, /* MDOC_Filled */
! 101: ARGV_NONE, /* MDOC_Words */
! 102: ARGV_NONE, /* MDOC_Emphasis */
! 103: ARGV_NONE, /* MDOC_Symbolic */
! 104: ARGV_NONE /* MDOC_Symbolic */
! 105: };
! 106:
! 107: static int mdoc_argflags[MDOC_MAX] = {
! 108: 0, /* \" */
! 109: 0, /* Dd */
! 110: 0, /* Dt */
! 111: 0, /* Os */
! 112: ARGS_QUOTED, /* Sh */
! 113: ARGS_QUOTED, /* Ss */
! 114: ARGS_DELIM, /* Pp */
! 115: ARGS_DELIM, /* D1 */
! 116: ARGS_DELIM | ARGS_QUOTED, /* Dl */
! 117: 0, /* Bd */
! 118: 0, /* Ed */
! 119: 0, /* Bl */
! 120: 0, /* El */
! 121: 0, /* It */
! 122: ARGS_DELIM, /* Ad */
! 123: ARGS_DELIM, /* An */
! 124: ARGS_DELIM | ARGS_QUOTED, /* Ar */
! 125: ARGS_QUOTED, /* Cd */
! 126: ARGS_DELIM, /* Cm */
! 127: ARGS_DELIM, /* Dv */
! 128: ARGS_DELIM, /* Er */
! 129: ARGS_DELIM, /* Ev */
! 130: 0, /* Ex */
! 131: ARGS_DELIM | ARGS_QUOTED, /* Fa */
! 132: 0, /* Fd */
! 133: ARGS_DELIM, /* Fl */
! 134: ARGS_DELIM | ARGS_QUOTED, /* Fn */
! 135: ARGS_DELIM | ARGS_QUOTED, /* Ft */
! 136: ARGS_DELIM, /* Ic */
! 137: 0, /* In */
! 138: ARGS_DELIM | ARGS_QUOTED, /* Li */
! 139: ARGS_QUOTED, /* Nd */
! 140: ARGS_DELIM, /* Nm */
! 141: ARGS_DELIM, /* Op */
! 142: 0, /* Ot */
! 143: ARGS_DELIM, /* Pa */
! 144: 0, /* Rv */
! 145: ARGS_DELIM | ARGS_ARGVLIKE, /* St */
! 146: ARGS_DELIM, /* Va */
! 147: ARGS_DELIM, /* Vt */
! 148: ARGS_DELIM, /* Xr */
! 149: ARGS_QUOTED, /* %A */
! 150: ARGS_QUOTED, /* %B */
! 151: ARGS_QUOTED, /* %D */
! 152: ARGS_QUOTED, /* %I */
! 153: ARGS_QUOTED, /* %J */
! 154: ARGS_QUOTED, /* %N */
! 155: ARGS_QUOTED, /* %O */
! 156: ARGS_QUOTED, /* %P */
! 157: ARGS_QUOTED, /* %R */
! 158: ARGS_QUOTED, /* %T */
! 159: ARGS_QUOTED, /* %V */
! 160: ARGS_DELIM, /* Ac */
! 161: 0, /* Ao */
! 162: ARGS_DELIM, /* Aq */
! 163: ARGS_DELIM, /* At */
! 164: ARGS_DELIM, /* Bc */
! 165: 0, /* Bf */
! 166: 0, /* Bo */
! 167: ARGS_DELIM, /* Bq */
! 168: ARGS_DELIM, /* Bsx */
! 169: ARGS_DELIM, /* Bx */
! 170: 0, /* Db */
! 171: ARGS_DELIM, /* Dc */
! 172: 0, /* Do */
! 173: ARGS_DELIM, /* Dq */
! 174: ARGS_DELIM, /* Ec */
! 175: 0, /* Ef */
! 176: ARGS_DELIM, /* Em */
! 177: 0, /* Eo */
! 178: ARGS_DELIM, /* Fx */
! 179: ARGS_DELIM, /* Ms */
! 180: ARGS_DELIM, /* No */
! 181: ARGS_DELIM, /* Ns */
! 182: ARGS_DELIM, /* Nx */
! 183: ARGS_DELIM, /* Ox */
! 184: ARGS_DELIM, /* Pc */
! 185: ARGS_DELIM, /* Pf */
! 186: 0, /* Po */
! 187: ARGS_DELIM, /* Pq */
! 188: ARGS_DELIM, /* Qc */
! 189: ARGS_DELIM, /* Ql */
! 190: 0, /* Qo */
! 191: ARGS_DELIM, /* Qq */
! 192: 0, /* Re */
! 193: 0, /* Rs */
! 194: ARGS_DELIM, /* Sc */
! 195: 0, /* So */
! 196: ARGS_DELIM, /* Sq */
! 197: 0, /* Sm */
! 198: ARGS_DELIM, /* Sx */
! 199: ARGS_DELIM | ARGS_QUOTED, /* Sy */
! 200: ARGS_DELIM, /* Tn */
! 201: ARGS_DELIM, /* Ux */
! 202: ARGS_DELIM, /* Xc */
! 203: 0, /* Xo */
! 204: ARGS_QUOTED, /* Fo */
! 205: 0, /* Fc */
! 206: 0, /* Oo */
! 207: ARGS_DELIM, /* Oc */
! 208: 0, /* Bk */
! 209: 0, /* Ek */
! 210: 0, /* Bt */
! 211: 0, /* Hf */
! 212: 0, /* Fr */
! 213: 0, /* Ud */
! 214: 0, /* Lb */
! 215: 0, /* Ap */
! 216: ARGS_DELIM, /* Lp */
! 217: ARGS_DELIM | ARGS_QUOTED, /* Lk */
! 218: ARGS_DELIM | ARGS_QUOTED, /* Mt */
! 219: ARGS_DELIM, /* Brq */
! 220: 0, /* Bro */
! 221: ARGS_DELIM, /* Brc */
! 222: ARGS_QUOTED, /* %C */
! 223: 0, /* Es */
! 224: 0, /* En */
! 225: 0, /* Dx */
! 226: ARGS_QUOTED, /* %Q */
! 227: };
! 228:
! 229:
! 230: /*
! 231: * Parse an argument from line text. This comes in the form of -key
! 232: * [value0...], which may either have a single mandatory value, at least
! 233: * one mandatory value, an optional single value, or no value.
! 234: */
! 235: int
! 236: mdoc_argv(struct mdoc *mdoc, int line, int tok,
! 237: struct mdoc_arg **v, int *pos, char *buf)
! 238: {
! 239: int i;
! 240: char *p, sv;
! 241: struct mdoc_argv tmp;
! 242: struct mdoc_arg *arg;
! 243:
! 244: if (0 == buf[*pos])
! 245: return(ARGV_EOLN);
! 246:
! 247: assert(' ' != buf[*pos]);
! 248:
! 249: if ('-' != buf[*pos] || ARGS_ARGVLIKE & mdoc_argflags[tok])
! 250: return(ARGV_WORD);
! 251:
! 252: /* Parse through to the first unescaped space. */
! 253:
! 254: i = *pos;
! 255: p = &buf[++(*pos)];
! 256:
! 257: assert(*pos > 0);
! 258:
! 259: /* LINTED */
! 260: while (buf[*pos]) {
! 261: if (' ' == buf[*pos])
! 262: if ('\\' != buf[*pos - 1])
! 263: break;
! 264: (*pos)++;
! 265: }
! 266:
! 267: /* XXX - save zeroed byte, if not an argument. */
! 268:
! 269: sv = 0;
! 270: if (buf[*pos]) {
! 271: sv = buf[*pos];
! 272: buf[(*pos)++] = 0;
! 273: }
! 274:
! 275: (void)memset(&tmp, 0, sizeof(struct mdoc_argv));
! 276: tmp.line = line;
! 277: tmp.pos = *pos;
! 278:
! 279: /* See if our token accepts the argument. */
! 280:
! 281: if (MDOC_ARG_MAX == (tmp.arg = argv_a2arg(tok, p))) {
! 282: /* XXX - restore saved zeroed byte. */
! 283: if (sv)
! 284: buf[*pos - 1] = sv;
! 285: if ( ! pwarn(mdoc, line, i, WARGVPARM))
! 286: return(ARGV_ERROR);
! 287: return(ARGV_WORD);
! 288: }
! 289:
! 290: while (buf[*pos] && ' ' == buf[*pos])
! 291: (*pos)++;
! 292:
! 293: if ( ! argv(mdoc, line, &tmp, pos, buf))
! 294: return(ARGV_ERROR);
! 295:
! 296: if (NULL == (arg = *v)) {
! 297: if (NULL == (*v = calloc(1, sizeof(struct mdoc_arg))))
! 298: err(1, "calloc");
! 299: arg = *v;
! 300: }
! 301:
! 302: arg->argc++;
! 303: arg->argv = xrealloc(arg->argv, arg->argc *
! 304: sizeof(struct mdoc_argv));
! 305:
! 306: (void)memcpy(&arg->argv[(int)arg->argc - 1],
! 307: &tmp, sizeof(struct mdoc_argv));
! 308:
! 309: return(ARGV_ARG);
! 310: }
! 311:
! 312:
! 313: void
! 314: mdoc_argv_free(struct mdoc_arg *p)
! 315: {
! 316: int i, j;
! 317:
! 318: if (NULL == p)
! 319: return;
! 320:
! 321: if (p->refcnt) {
! 322: --(p->refcnt);
! 323: if (p->refcnt)
! 324: return;
! 325: }
! 326:
! 327: assert(p->argc);
! 328:
! 329: /* LINTED */
! 330: for (i = 0; i < (int)p->argc; i++) {
! 331: if (0 == p->argv[i].sz)
! 332: continue;
! 333: /* LINTED */
! 334: for (j = 0; j < (int)p->argv[i].sz; j++)
! 335: free(p->argv[i].value[j]);
! 336:
! 337: free(p->argv[i].value);
! 338: }
! 339:
! 340: free(p->argv);
! 341: free(p);
! 342: }
! 343:
! 344:
! 345:
! 346: static int
! 347: perr(struct mdoc *mdoc, int line, int pos, enum merr code)
! 348: {
! 349: char *p;
! 350:
! 351: p = NULL;
! 352:
! 353: switch (code) {
! 354: case (EQUOTTERM):
! 355: p = "unterminated quoted parameter";
! 356: break;
! 357: case (EARGVAL):
! 358: p = "argument requires a value";
! 359: break;
! 360: }
! 361:
! 362: assert(p);
! 363: return(mdoc_perr(mdoc, line, pos, p));
! 364: }
! 365:
! 366:
! 367: static int
! 368: pwarn(struct mdoc *mdoc, int line, int pos, enum mwarn code)
! 369: {
! 370: char *p;
! 371: int c;
! 372:
! 373: p = NULL;
! 374: c = WARN_SYNTAX;
! 375:
! 376: switch (code) {
! 377: case (WQUOTPARM):
! 378: p = "unexpected quoted parameter";
! 379: break;
! 380: case (WARGVPARM):
! 381: p = "argument-like parameter";
! 382: break;
! 383: case (WCOLEMPTY):
! 384: p = "last list column is empty";
! 385: c = WARN_COMPAT;
! 386: break;
! 387: case (WTAILWS):
! 388: p = "trailing whitespace";
! 389: c = WARN_COMPAT;
! 390: break;
! 391: }
! 392:
! 393: assert(p);
! 394: return(mdoc_pwarn(mdoc, line, pos, c, p));
! 395: }
! 396:
! 397:
! 398: int
! 399: mdoc_args(struct mdoc *mdoc, int line,
! 400: int *pos, char *buf, int tok, char **v)
! 401: {
! 402: int fl, c, i;
! 403: struct mdoc_node *n;
! 404:
! 405: fl = (0 == tok) ? 0 : mdoc_argflags[tok];
! 406:
! 407: /*
! 408: * Override per-macro argument flags with context-specific ones.
! 409: * As of now, this is only valid for `It' depending on its list
! 410: * context.
! 411: */
! 412:
! 413: switch (tok) {
! 414: case (MDOC_It):
! 415: for (n = mdoc->last; n; n = n->parent)
! 416: if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
! 417: break;
! 418:
! 419: assert(n);
! 420: c = (int)(n->args ? n->args->argc : 0);
! 421: assert(c > 0);
! 422:
! 423: /*
! 424: * Using `Bl -column' adds ARGS_TABSEP to the arguments
! 425: * and invalidates ARGS_DELIM. Using `Bl -diag' allows
! 426: * for quoted arguments.
! 427: */
! 428:
! 429: /* LINTED */
! 430: for (i = 0; i < c; i++) {
! 431: switch (n->args->argv[i].arg) {
! 432: case (MDOC_Column):
! 433: fl |= ARGS_TABSEP;
! 434: fl &= ~ARGS_DELIM;
! 435: i = c;
! 436: break;
! 437: case (MDOC_Diag):
! 438: fl |= ARGS_QUOTED;
! 439: i = c;
! 440: break;
! 441: default:
! 442: break;
! 443: }
! 444: }
! 445: break;
! 446: default:
! 447: break;
! 448: }
! 449:
! 450: return(args(mdoc, line, pos, buf, fl, v));
! 451: }
! 452:
! 453:
! 454: static int
! 455: args(struct mdoc *mdoc, int line,
! 456: int *pos, char *buf, int fl, char **v)
! 457: {
! 458: int i;
! 459: char *p, *pp;
! 460:
! 461: assert(*pos > 0);
! 462:
! 463: if (0 == buf[*pos])
! 464: return(ARGS_EOLN);
! 465:
! 466: if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
! 467: if ( ! pwarn(mdoc, line, *pos, WQUOTPARM))
! 468: return(ARGS_ERROR);
! 469:
! 470: if ( ! (fl & ARGS_ARGVLIKE) && '-' == buf[*pos])
! 471: if ( ! pwarn(mdoc, line, *pos, WARGVPARM))
! 472: return(ARGS_ERROR);
! 473:
! 474: /*
! 475: * If the first character is a delimiter and we're to look for
! 476: * delimited strings, then pass down the buffer seeing if it
! 477: * follows the pattern of [[::delim::][ ]+]+.
! 478: */
! 479:
! 480: if ((fl & ARGS_DELIM) && mdoc_iscdelim(buf[*pos])) {
! 481: for (i = *pos; buf[i]; ) {
! 482: if ( ! mdoc_iscdelim(buf[i]))
! 483: break;
! 484: i++;
! 485: /* There must be at least one space... */
! 486: if (0 == buf[i] || ' ' != buf[i])
! 487: break;
! 488: i++;
! 489: while (buf[i] && ' ' == buf[i])
! 490: i++;
! 491: }
! 492: if (0 == buf[i]) {
! 493: *v = &buf[*pos];
! 494: return(ARGS_PUNCT);
! 495: }
! 496: }
! 497:
! 498: /* First parse non-quoted strings. */
! 499:
! 500: if ('\"' != buf[*pos] || ! (ARGS_QUOTED & fl)) {
! 501: *v = &buf[*pos];
! 502:
! 503: /*
! 504: * Thar be dragons here! If we're tab-separated, search
! 505: * ahead for either a tab or the `Ta' macro.
! 506: * If a `Ta' is detected, it must be space-buffered before and
! 507: * after. If either of these hold true, then prune out the
! 508: * extra spaces and call it an argument.
! 509: */
! 510:
! 511: if (ARGS_TABSEP & fl) {
! 512: /* Scan ahead to unescaped tab. */
! 513:
! 514: p = strchr(*v, '\t');
! 515:
! 516: /* Scan ahead to unescaped `Ta'. */
! 517:
! 518: for (pp = *v; ; pp++) {
! 519: if (NULL == (pp = strstr(pp, "Ta")))
! 520: break;
! 521: if (pp > *v && ' ' != *(pp - 1))
! 522: continue;
! 523: if (' ' == *(pp + 2) || 0 == *(pp + 2))
! 524: break;
! 525: }
! 526:
! 527: /* Choose delimiter tab/Ta. */
! 528:
! 529: if (p && pp)
! 530: p = (p < pp ? p : pp);
! 531: else if ( ! p && pp)
! 532: p = pp;
! 533:
! 534: /* Strip delimiter's preceding whitespace. */
! 535:
! 536: if (p && p > *v) {
! 537: pp = p - 1;
! 538: while (pp > *v && ' ' == *pp)
! 539: pp--;
! 540: if (pp == *v && ' ' == *pp)
! 541: *pp = 0;
! 542: else if (' ' == *pp)
! 543: *(pp + 1) = 0;
! 544: }
! 545:
! 546: /* ...in- and proceding whitespace. */
! 547:
! 548: if (p && ('\t' != *p)) {
! 549: *p++ = 0;
! 550: *p++ = 0;
! 551: } else if (p)
! 552: *p++ = 0;
! 553:
! 554: if (p) {
! 555: while (' ' == *p)
! 556: p++;
! 557: if (0 != *p)
! 558: *(p - 1) = 0;
! 559: *pos += (int)(p - *v);
! 560: }
! 561:
! 562: if (p && 0 == *p)
! 563: if ( ! pwarn(mdoc, line, *pos, WCOLEMPTY))
! 564: return(0);
! 565: if (p && 0 == *p && p > *v && ' ' == *(p - 1))
! 566: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
! 567: return(0);
! 568:
! 569: if (p)
! 570: return(ARGS_PHRASE);
! 571:
! 572: /* Configure the eoln case, too. */
! 573:
! 574: p = strchr(*v, 0);
! 575: assert(p);
! 576:
! 577: if (p > *v && ' ' == *(p - 1))
! 578: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
! 579: return(0);
! 580: *pos += (int)(p - *v);
! 581:
! 582: return(ARGS_PHRASE);
! 583: }
! 584:
! 585: /* Do non-tabsep look-ahead here. */
! 586:
! 587: if ( ! (ARGS_TABSEP & fl))
! 588: while (buf[*pos]) {
! 589: if (' ' == buf[*pos])
! 590: if ('\\' != buf[*pos - 1])
! 591: break;
! 592: (*pos)++;
! 593: }
! 594:
! 595: if (0 == buf[*pos])
! 596: return(ARGS_WORD);
! 597:
! 598: buf[(*pos)++] = 0;
! 599:
! 600: if (0 == buf[*pos])
! 601: return(ARGS_WORD);
! 602:
! 603: if ( ! (ARGS_TABSEP & fl))
! 604: while (buf[*pos] && ' ' == buf[*pos])
! 605: (*pos)++;
! 606:
! 607: if (buf[*pos])
! 608: return(ARGS_WORD);
! 609:
! 610: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
! 611: return(ARGS_ERROR);
! 612:
! 613: return(ARGS_WORD);
! 614: }
! 615:
! 616: /*
! 617: * If we're a quoted string (and quoted strings are allowed),
! 618: * then parse ahead to the next quote. If none's found, it's an
! 619: * error. After, parse to the next word.
! 620: */
! 621:
! 622: *v = &buf[++(*pos)];
! 623:
! 624: while (buf[*pos] && '\"' != buf[*pos])
! 625: (*pos)++;
! 626:
! 627: if (0 == buf[*pos]) {
! 628: (void)perr(mdoc, line, *pos, EQUOTTERM);
! 629: return(ARGS_ERROR);
! 630: }
! 631:
! 632: buf[(*pos)++] = 0;
! 633: if (0 == buf[*pos])
! 634: return(ARGS_QWORD);
! 635:
! 636: while (buf[*pos] && ' ' == buf[*pos])
! 637: (*pos)++;
! 638:
! 639: if (buf[*pos])
! 640: return(ARGS_QWORD);
! 641:
! 642: if ( ! pwarn(mdoc, line, *pos, WTAILWS))
! 643: return(ARGS_ERROR);
! 644:
! 645: return(ARGS_QWORD);
! 646: }
! 647:
! 648:
! 649: static int
! 650: argv_a2arg(int tok, const char *argv)
! 651: {
! 652:
! 653: /*
! 654: * Parse an argument identifier from its text. XXX - this
! 655: * should really be table-driven to clarify the code.
! 656: *
! 657: * If you add an argument to the list, make sure that you
! 658: * register it here with its one or more macros!
! 659: */
! 660:
! 661: switch (tok) {
! 662: case (MDOC_An):
! 663: if (xstrcmp(argv, "split"))
! 664: return(MDOC_Split);
! 665: else if (xstrcmp(argv, "nosplit"))
! 666: return(MDOC_Nosplit);
! 667: break;
! 668:
! 669: case (MDOC_Bd):
! 670: if (xstrcmp(argv, "ragged"))
! 671: return(MDOC_Ragged);
! 672: else if (xstrcmp(argv, "unfilled"))
! 673: return(MDOC_Unfilled);
! 674: else if (xstrcmp(argv, "filled"))
! 675: return(MDOC_Filled);
! 676: else if (xstrcmp(argv, "literal"))
! 677: return(MDOC_Literal);
! 678: else if (xstrcmp(argv, "file"))
! 679: return(MDOC_File);
! 680: else if (xstrcmp(argv, "offset"))
! 681: return(MDOC_Offset);
! 682: else if (xstrcmp(argv, "compact"))
! 683: return(MDOC_Compact);
! 684: break;
! 685:
! 686: case (MDOC_Bf):
! 687: if (xstrcmp(argv, "emphasis"))
! 688: return(MDOC_Emphasis);
! 689: else if (xstrcmp(argv, "literal"))
! 690: return(MDOC_Literal);
! 691: else if (xstrcmp(argv, "symbolic"))
! 692: return(MDOC_Symbolic);
! 693: break;
! 694:
! 695: case (MDOC_Bk):
! 696: if (xstrcmp(argv, "words"))
! 697: return(MDOC_Words);
! 698: break;
! 699:
! 700: case (MDOC_Bl):
! 701: if (xstrcmp(argv, "bullet"))
! 702: return(MDOC_Bullet);
! 703: else if (xstrcmp(argv, "dash"))
! 704: return(MDOC_Dash);
! 705: else if (xstrcmp(argv, "hyphen"))
! 706: return(MDOC_Hyphen);
! 707: else if (xstrcmp(argv, "item"))
! 708: return(MDOC_Item);
! 709: else if (xstrcmp(argv, "enum"))
! 710: return(MDOC_Enum);
! 711: else if (xstrcmp(argv, "tag"))
! 712: return(MDOC_Tag);
! 713: else if (xstrcmp(argv, "diag"))
! 714: return(MDOC_Diag);
! 715: else if (xstrcmp(argv, "hang"))
! 716: return(MDOC_Hang);
! 717: else if (xstrcmp(argv, "ohang"))
! 718: return(MDOC_Ohang);
! 719: else if (xstrcmp(argv, "inset"))
! 720: return(MDOC_Inset);
! 721: else if (xstrcmp(argv, "column"))
! 722: return(MDOC_Column);
! 723: else if (xstrcmp(argv, "width"))
! 724: return(MDOC_Width);
! 725: else if (xstrcmp(argv, "offset"))
! 726: return(MDOC_Offset);
! 727: else if (xstrcmp(argv, "compact"))
! 728: return(MDOC_Compact);
! 729: else if (xstrcmp(argv, "nested"))
! 730: return(MDOC_Nested);
! 731: break;
! 732:
! 733: case (MDOC_Rv):
! 734: /* FALLTHROUGH */
! 735: case (MDOC_Ex):
! 736: if (xstrcmp(argv, "std"))
! 737: return(MDOC_Std);
! 738: break;
! 739: default:
! 740: break;
! 741: }
! 742:
! 743: return(MDOC_ARG_MAX);
! 744: }
! 745:
! 746:
! 747: static int
! 748: argv_multi(struct mdoc *mdoc, int line,
! 749: struct mdoc_argv *v, int *pos, char *buf)
! 750: {
! 751: int c, ppos;
! 752: char *p;
! 753:
! 754: ppos = *pos;
! 755:
! 756: for (v->sz = 0; ; v->sz++) {
! 757: if ('-' == buf[*pos])
! 758: break;
! 759: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
! 760: if (ARGS_ERROR == c)
! 761: return(0);
! 762: else if (ARGS_EOLN == c)
! 763: break;
! 764:
! 765: if (0 == v->sz % MULTI_STEP)
! 766: v->value = xrealloc(v->value,
! 767: (v->sz + MULTI_STEP) * sizeof(char *));
! 768: if (NULL == (v->value[(int)v->sz] = strdup(p)))
! 769: err(1, "strdup");
! 770: }
! 771:
! 772: if (v->sz)
! 773: return(1);
! 774:
! 775: return(perr(mdoc, line, ppos, EARGVAL));
! 776: }
! 777:
! 778:
! 779: static int
! 780: argv_opt_single(struct mdoc *mdoc, int line,
! 781: struct mdoc_argv *v, int *pos, char *buf)
! 782: {
! 783: int c;
! 784: char *p;
! 785:
! 786: if ('-' == buf[*pos])
! 787: return(1);
! 788:
! 789: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
! 790: if (ARGS_ERROR == c)
! 791: return(0);
! 792: if (ARGS_EOLN == c)
! 793: return(1);
! 794:
! 795: v->sz = 1;
! 796: if (NULL == (v->value = calloc(1, sizeof(char *))))
! 797: err(1, "calloc");
! 798: if (NULL == (v->value[0] = strdup(p)))
! 799: err(1, "strdup");
! 800: return(1);
! 801: }
! 802:
! 803:
! 804: /*
! 805: * Parse a single, mandatory value from the stream.
! 806: */
! 807: static int
! 808: argv_single(struct mdoc *mdoc, int line,
! 809: struct mdoc_argv *v, int *pos, char *buf)
! 810: {
! 811: int c, ppos;
! 812: char *p;
! 813:
! 814: ppos = *pos;
! 815:
! 816: c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
! 817: if (ARGS_ERROR == c)
! 818: return(0);
! 819: if (ARGS_EOLN == c)
! 820: return(perr(mdoc, line, ppos, EARGVAL));
! 821:
! 822: v->sz = 1;
! 823: if (NULL == (v->value = calloc(1, sizeof(char *))))
! 824: err(1, "calloc");
! 825: if (NULL == (v->value[0] = strdup(p)))
! 826: err(1, "strdup");
! 827: return(1);
! 828: }
! 829:
! 830:
! 831: /*
! 832: * Determine rules for parsing arguments. Arguments can either accept
! 833: * no parameters, an optional single parameter, one parameter, or
! 834: * multiple parameters.
! 835: */
! 836: static int
! 837: argv(struct mdoc *mdoc, int line,
! 838: struct mdoc_argv *v, int *pos, char *buf)
! 839: {
! 840:
! 841: v->sz = 0;
! 842: v->value = NULL;
! 843:
! 844: switch (mdoc_argvflags[v->arg]) {
! 845: case (ARGV_SINGLE):
! 846: return(argv_single(mdoc, line, v, pos, buf));
! 847: case (ARGV_MULTI):
! 848: return(argv_multi(mdoc, line, v, pos, buf));
! 849: case (ARGV_OPT_SINGLE):
! 850: return(argv_opt_single(mdoc, line, v, pos, buf));
! 851: default:
! 852: /* ARGV_NONE */
! 853: break;
! 854: }
! 855:
! 856: return(1);
! 857: }