mdoc.c

   1 /* $Id: mdoc.c,v 1.14 2009/01/02 14:06:16 kristaps Exp $ */
   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  */
  19 #include <assert.h>
  20 #include <ctype.h>
  21 #include <err.h>
  22 #include <stdarg.h>
  23 #include <stdlib.h>
  24 #include <stdio.h>
  25 #include <string.h>
  26
  27 #include "private.h"
  28
  29 const   char *const __mdoc_macronames[MDOC_MAX] = {
  30         "\\\"",         "Dd",           "Dt",           "Os",
  31         "Sh",           "Ss",           "Pp",           "D1",
  32         "Dl",           "Bd",           "Ed",           "Bl",
  33         "El",           "It",           "Ad",           "An",
  34         "Ar",           "Cd",           "Cm",           "Dv",
  35         "Er",           "Ev",           "Ex",           "Fa",
  36         "Fd",           "Fl",           "Fn",           "Ft",
  37         "Ic",           "In",           "Li",           "Nd",
  38         "Nm",           "Op",           "Ot",           "Pa",
  39         "Rv",           "St",           "Va",           "Vt",
  40         /* LINTED */
  41         "Xr",           "\%A",          "\%B",          "\%D",
  42         /* LINTED */
  43         "\%I",          "\%J",          "\%N",          "\%O",
  44         /* LINTED */
  45         "\%P",          "\%R",          "\%T",          "\%V",
  46         "Ac",           "Ao",           "Aq",           "At",
  47         "Bc",           "Bf",           "Bo",           "Bq",
  48         "Bsx",          "Bx",           "Db",           "Dc",
  49         "Do",           "Dq",           "Ec",           "Ef",
  50         "Em",           "Eo",           "Fx",           "Ms",
  51         "No",           "Ns",           "Nx",           "Ox",
  52         "Pc",           "Pf",           "Po",           "Pq",
  53         "Qc",           "Ql",           "Qo",           "Qq",
  54         "Re",           "Rs",           "Sc",           "So",
  55         "Sq",           "Sm",           "Sx",           "Sy",
  56         "Tn",           "Ux",           "Xc",           "Xo",
  57         "Fo",           "Fc",           "Oo",           "Oc",
  58         "Bk",           "Ek",           "Bt",           "Hf",
  59         "Fr",           "Ud",
  60         };
  61
  62 const   char *const __mdoc_argnames[MDOC_ARG_MAX] = {
  63         "split",                "nosplit",              "ragged",
  64         "unfilled",             "literal",              "file",
  65         "offset",               "bullet",               "dash",
  66         "hyphen",               "item",                 "enum",
  67         "tag",                  "diag",                 "hang",
  68         "ohang",                "inset",                "column",
  69         "width",                "compact",              "std",
  70         "p1003.1-88",           "p1003.1-90",           "p1003.1-96",
  71         "p1003.1-2001",         "p1003.1-2004",         "p1003.1",
  72         "p1003.1b",             "p1003.1b-93",          "p1003.1c-95",
  73         "p1003.1g-2000",        "p1003.2-92",           "p1387.2-95",
  74         "p1003.2",              "p1387.2",              "isoC-90",
  75         "isoC-amd1",            "isoC-tcor1",           "isoC-tcor2",
  76         "isoC-99",              "ansiC",                "ansiC-89",
  77         "ansiC-99",             "ieee754",              "iso8802-3",
  78         "xpg3",                 "xpg4",                 "xpg4.2",
  79         "xpg4.3",               "xbd5",                 "xcu5",
  80         "xsh5",                 "xns5",                 "xns5.2d2.0",
  81         "xcurses4.2",           "susv2",                "susv3",
  82         "svid4",                "filled",               "words",
  83         "emphasis",             "symbolic",
  84         };
  85
  86 const   struct mdoc_macro __mdoc_macros[MDOC_MAX] = {
  87         { NULL, 0 }, /* \" */
  88         { NULL, MDOC_PROLOGUE }, /* Dd */
  89         { NULL, MDOC_PROLOGUE }, /* Dt */
  90         { NULL, MDOC_PROLOGUE }, /* Os */
  91         { macro_scoped, 0 }, /* Sh */
  92         { macro_scoped, 0 }, /* Ss */
  93         { macro_text, 0 }, /* Pp */
  94         { macro_scoped_line, 0 }, /* D1 */
  95         { macro_scoped_line, 0 }, /* Dl */
  96         { macro_scoped, MDOC_EXPLICIT }, /* Bd */
  97         { macro_close_explicit, 0 }, /* Ed */
  98         { macro_scoped, MDOC_EXPLICIT }, /* Bl */
  99         { macro_close_explicit, 0 }, /* El */
 100         { NULL, 0 }, /* It */
 101         { macro_text, MDOC_CALLABLE }, /* Ad */
 102         { macro_constant, 0 }, /* An */
 103         { macro_text, MDOC_CALLABLE }, /* Ar */
 104         { macro_constant, MDOC_QUOTABLE }, /* Cd */
 105         { macro_text, MDOC_CALLABLE }, /* Cm */
 106         { macro_text, MDOC_CALLABLE }, /* Dv */
 107         { macro_text, MDOC_CALLABLE }, /* Er */
 108         { macro_text, MDOC_CALLABLE }, /* Ev */
 109         { macro_constant, 0 }, /* Ex */
 110         { macro_text, MDOC_CALLABLE }, /* Fa */
 111         { macro_constant, 0 }, /* Fd */
 112         { macro_text, MDOC_CALLABLE }, /* Fl */
 113         { macro_text, MDOC_CALLABLE | MDOC_QUOTABLE }, /* Fn */
 114         { macro_text, 0 }, /* Ft */
 115         { macro_text, MDOC_CALLABLE }, /* Ic */
 116         { macro_constant, 0 }, /* In */
 117         { macro_text, MDOC_CALLABLE }, /* Li */
 118         { macro_constant, 0 }, /* Nd */
 119         { NULL, 0 }, /* Nm */
 120         { macro_scoped_line, MDOC_CALLABLE }, /* Op */
 121         { macro_obsolete, 0 }, /* Ot */
 122         { macro_text, MDOC_CALLABLE }, /* Pa */
 123         { macro_constant, 0 }, /* Rv */
 124         { macro_constant, 0 }, /* St */
 125         { macro_text, MDOC_CALLABLE }, /* Va */
 126         { macro_text, MDOC_CALLABLE }, /* Vt */
 127         { macro_text, MDOC_CALLABLE }, /* Xr */
 128         { macro_constant, MDOC_QUOTABLE }, /* %A */
 129         { macro_constant, MDOC_QUOTABLE }, /* %B */
 130         { macro_constant, MDOC_QUOTABLE }, /* %D */
 131         { macro_constant, MDOC_QUOTABLE }, /* %I */
 132         { macro_constant, MDOC_QUOTABLE }, /* %J */
 133         { macro_constant, MDOC_QUOTABLE }, /* %N */
 134         { macro_constant, MDOC_QUOTABLE }, /* %O */
 135         { macro_constant, MDOC_QUOTABLE }, /* %P */
 136         { macro_constant, MDOC_QUOTABLE }, /* %R */
 137         { macro_constant, MDOC_QUOTABLE }, /* %T */
 138         { macro_constant, MDOC_QUOTABLE }, /* %V */
 139         { NULL, 0 }, /* Ac */
 140         { NULL, 0 }, /* Ao */
 141         { macro_scoped_line, MDOC_CALLABLE }, /* Aq */
 142         { macro_constant, 0 }, /* At */
 143         { NULL, 0 }, /* Bc */
 144         { macro_scoped, 0 }, /* Bf */
 145         { NULL, 0 }, /* Bo */
 146         { macro_scoped_line, MDOC_CALLABLE }, /* Bq */
 147         { macro_constant_delimited, 0 }, /* Bsx */
 148         { macro_constant_delimited, 0 }, /* Bx */
 149         { macro_constant, 0 }, /* Db */
 150         { NULL, 0 }, /* Dc */
 151         { NULL, 0 }, /* Do */
 152         { macro_scoped_line, MDOC_CALLABLE }, /* Dq */
 153         { NULL, 0 }, /* Ec */
 154         { macro_close_explicit, 0 }, /* Ef */
 155         { macro_text, MDOC_CALLABLE }, /* Em */
 156         { NULL, 0 }, /* Eo */
 157         { macro_constant_delimited, 0 }, /* Fx */
 158         { macro_text, 0 }, /* Ms */
 159         { macro_constant_delimited, MDOC_CALLABLE }, /* No */
 160         { macro_constant_delimited, MDOC_CALLABLE }, /* Ns */
 161         { macro_constant_delimited, 0 }, /* Nx */
 162         { macro_constant_delimited, 0 }, /* Ox */
 163         { NULL, 0 }, /* Pc */
 164         { macro_constant, 0 }, /* Pf */
 165         { NULL, 0 }, /* Po */
 166         { macro_scoped_line, MDOC_CALLABLE }, /* Pq */
 167         { NULL, 0 }, /* Qc */
 168         { macro_scoped_line, MDOC_CALLABLE }, /* Ql */
 169         { NULL, 0 }, /* Qo */
 170         { macro_scoped_line, MDOC_CALLABLE }, /* Qq */
 171         { macro_scoped, MDOC_EXPLICIT }, /* Re */
 172         { macro_scoped, MDOC_EXPLICIT }, /* Rs */
 173         { NULL, 0 }, /* Sc */
 174         { NULL, 0 }, /* So */
 175         { macro_scoped_line, MDOC_CALLABLE }, /* Sq */
 176         { macro_constant, 0 }, /* Sm */
 177         { macro_text, MDOC_CALLABLE }, /* Sx */
 178         { macro_text, MDOC_CALLABLE }, /* Sy */
 179         { macro_text, MDOC_CALLABLE }, /* Tn */
 180         { macro_constant_delimited, 0 }, /* Ux */
 181         { NULL, 0 }, /* Xc */
 182         { NULL, 0 }, /* Xo */
 183         { NULL, 0 }, /* Fo */
 184         { NULL, 0 }, /* Fc */
 185         { NULL, 0 }, /* Oo */
 186         { NULL, 0 }, /* Oc */
 187         { NULL, 0 }, /* Bk */
 188         { NULL, 0 }, /* Ek */
 189         { macro_constant, 0 }, /* Bt */
 190         { macro_constant, 0 }, /* Hf */
 191         { macro_obsolete, 0 }, /* Fr */
 192         { macro_constant, 0 }, /* Ud */
 193 };
 194
 195 const   char * const *mdoc_macronames = __mdoc_macronames;
 196 const   char * const *mdoc_argnames = __mdoc_argnames;
 197 const   struct mdoc_macro * const mdoc_macros = __mdoc_macros;
 198
 199
 200 static  struct mdoc_arg  *argdup(size_t, const struct mdoc_arg *);
 201 static  void              argfree(size_t, struct mdoc_arg *);
 202 static  void              argcpy(struct mdoc_arg *,
 203                                 const struct mdoc_arg *);
 204 static  char            **paramdup(size_t, const char **);
 205 static  void              paramfree(size_t, char **);
 206
 207 static  void              mdoc_node_freelist(struct mdoc_node *);
 208 static  void              mdoc_node_append(struct mdoc *, int,
 209                                 struct mdoc_node *);
 210 static  void              mdoc_elem_free(struct mdoc_elem *);
 211 static  void              mdoc_text_free(struct mdoc_text *);
 212
 213
 214 const struct mdoc_node *
 215 mdoc_result(struct mdoc *mdoc)
 216 {
 217
 218         return(mdoc->first);
 219 }
 220
 221
 222 void
 223 mdoc_free(struct mdoc *mdoc)
 224 {
 225
 226         if (mdoc->first)
 227                 mdoc_node_freelist(mdoc->first);
 228         if (mdoc->htab)
 229                 mdoc_tokhash_free(mdoc->htab);
 230
 231         free(mdoc);
 232 }
 233
 234
 235 struct mdoc *
 236 mdoc_alloc(void *data, const struct mdoc_cb *cb)
 237 {
 238         struct mdoc     *p;
 239
 240         p = xcalloc(1, sizeof(struct mdoc));
 241
 242         p->data = data;
 243         (void)memcpy(&p->cb, cb, sizeof(struct mdoc_cb));
 244
 245         p->htab = mdoc_tokhash_alloc();
 246         return(p);
 247 }
 248
 249
 250 int
 251 mdoc_parseln(struct mdoc *mdoc, char *buf)
 252 {
 253         int               c, i;
 254         char              tmp[5];
 255
 256         if ('.' != *buf) {
 257                 mdoc_word_alloc(mdoc, 0, buf);
 258                 mdoc->next = MDOC_NEXT_SIBLING;
 259                 return(1);
 260         }
 261
 262         if (buf[1] && '\\' == buf[1])
 263                 if (buf[2] && '\"' == buf[2])
 264                         return(1);
 265
 266         i = 1;
 267         while (buf[i] && ! isspace(buf[i]) && i < (int)sizeof(tmp))
 268                 i++;
 269
 270         if (i == (int)sizeof(tmp))
 271                 return(mdoc_err(mdoc, -1, 1, ERR_MACRO_NOTSUP));
 272         else if (i <= 2)
 273                 return(mdoc_err(mdoc, -1, 1, ERR_MACRO_NOTSUP));
 274
 275         i--;
 276
 277         (void)memcpy(tmp, buf + 1, (size_t)i);
 278         tmp[i++] = 0;
 279
 280         if (MDOC_MAX == (c = mdoc_find(mdoc, tmp)))
 281                 return(mdoc_err(mdoc, c, 1, ERR_MACRO_NOTSUP));
 282
 283         while (buf[i] && isspace(buf[i]))
 284                 i++;
 285
 286         return(mdoc_macro(mdoc, c, 1, &i, buf));
 287 }
 288
 289
 290 void
 291 mdoc_msg(struct mdoc *mdoc, int pos, const char *fmt, ...)
 292 {
 293         va_list          ap;
 294         char             buf[256];
 295
 296         if (NULL == mdoc->cb.mdoc_msg)
 297                 return;
 298
 299         va_start(ap, fmt);
 300         (void)vsnprintf(buf, sizeof(buf), fmt, ap);
 301         va_end(ap);
 302
 303         (*mdoc->cb.mdoc_msg)(mdoc->data, pos, buf);
 304 }
 305
 306
 307 int
 308 mdoc_err(struct mdoc *mdoc, int tok, int pos, enum mdoc_err type)
 309 {
 310
 311         if (NULL == mdoc->cb.mdoc_err)
 312                 return(0);
 313         return((*mdoc->cb.mdoc_err)(mdoc->data, tok, pos, type));
 314 }
 315
 316
 317 int
 318 mdoc_warn(struct mdoc *mdoc, int tok, int pos, enum mdoc_warn type)
 319 {
 320
 321         if (NULL == mdoc->cb.mdoc_warn)
 322                 return(0);
 323         return((*mdoc->cb.mdoc_warn)(mdoc->data, tok, pos, type));
 324 }
 325
 326
 327 int
 328 mdoc_macro(struct mdoc *mdoc, int tok, int ppos, int *pos, char *buf)
 329 {
 330
 331         if (MDOC_PROLOGUE & mdoc_macros[tok].flags &&
 332                         SEC_PROLOGUE == mdoc->sec_lastn)
 333                 return(macro_prologue(mdoc, tok, ppos, pos, buf));
 334
 335         if (SEC_PROLOGUE == mdoc->sec_lastn)
 336                 return(mdoc_err(mdoc, tok, ppos, ERR_SEC_PROLOGUE));
 337
 338         if (NULL == (mdoc_macros[tok].fp)) {
 339                 (void)mdoc_err(mdoc, tok, ppos, ERR_MACRO_NOTSUP);
 340                 return(0);
 341         }
 342
 343         if (1 != ppos && ! (MDOC_CALLABLE & mdoc_macros[tok].flags)) {
 344                 (void)mdoc_err(mdoc, tok, ppos, ERR_MACRO_NOTCALL);
 345                 return(0);
 346         }
 347
 348         return((*mdoc_macros[tok].fp)(mdoc, tok, ppos, pos, buf));
 349 }
 350
 351
 352 static void
 353 mdoc_node_append(struct mdoc *mdoc, int pos, struct mdoc_node *p)
 354 {
 355         const char       *nn, *on, *nt, *ot, *act;
 356
 357         switch (p->type) {
 358         case (MDOC_TEXT):
 359                 nn = p->data.text.string;
 360                 nt = "text";
 361                 break;
 362         case (MDOC_BODY):
 363                 nn = mdoc_macronames[p->data.body.tok];
 364                 nt = "body";
 365                 break;
 366         case (MDOC_ELEM):
 367                 nn = mdoc_macronames[p->data.elem.tok];
 368                 nt = "elem";
 369                 break;
 370         case (MDOC_HEAD):
 371                 nn = mdoc_macronames[p->data.head.tok];
 372                 nt = "head";
 373                 break;
 374         case (MDOC_BLOCK):
 375                 nn = mdoc_macronames[p->data.block.tok];
 376                 nt = "block";
 377                 break;
 378         default:
 379                 abort();
 380                 /* NOTREACHED */
 381         }
 382
 383         if (NULL == mdoc->first) {
 384                 assert(NULL == mdoc->last);
 385                 mdoc->first = p;
 386                 mdoc->last = p;
 387                 mdoc_msg(mdoc, pos, "parse: root %s `%s'", nt, nn);
 388                 return;
 389         }
 390
 391         switch (mdoc->last->type) {
 392         case (MDOC_TEXT):
 393                 on = "<text>";
 394                 ot = "text";
 395                 break;
 396         case (MDOC_BODY):
 397                 on = mdoc_macronames[mdoc->last->data.body.tok];
 398                 ot = "body";
 399                 break;
 400         case (MDOC_ELEM):
 401                 on = mdoc_macronames[mdoc->last->data.elem.tok];
 402                 ot = "elem";
 403                 break;
 404         case (MDOC_HEAD):
 405                 on = mdoc_macronames[mdoc->last->data.head.tok];
 406                 ot = "head";
 407                 break;
 408         case (MDOC_BLOCK):
 409                 on = mdoc_macronames[mdoc->last->data.block.tok];
 410                 ot = "block";
 411                 break;
 412         default:
 413                 abort();
 414                 /* NOTREACHED */
 415         }
 416
 417         switch (mdoc->next) {
 418         case (MDOC_NEXT_SIBLING):
 419                 mdoc->last->next = p;
 420                 p->prev = mdoc->last;
 421                 p->parent = mdoc->last->parent;
 422                 act = "sibling";
 423                 break;
 424         case (MDOC_NEXT_CHILD):
 425                 mdoc->last->child = p;
 426                 p->parent = mdoc->last;
 427                 act = "child";
 428                 break;
 429         default:
 430                 abort();
 431                 /* NOTREACHED */
 432         }
 433
 434         mdoc_msg(mdoc, pos, "parse: %s `%s' %s of %s `%s'",
 435                         nt, nn, act, ot, on);
 436
 437         mdoc->last = p;
 438 }
 439
 440
 441 void
 442 mdoc_head_alloc(struct mdoc *mdoc, int pos, int tok)
 443 {
 444         struct mdoc_node *p;
 445
 446         assert(mdoc->first);
 447         assert(mdoc->last);
 448
 449         p = xcalloc(1, sizeof(struct mdoc_node));
 450
 451         p->type = MDOC_HEAD;
 452         p->data.head.tok = tok;
 453
 454         mdoc_node_append(mdoc, pos, p);
 455 }
 456
 457
 458 void
 459 mdoc_body_alloc(struct mdoc *mdoc, int pos, int tok)
 460 {
 461         struct mdoc_node *p;
 462
 463         assert(mdoc->first);
 464         assert(mdoc->last);
 465
 466         p = xcalloc(1, sizeof(struct mdoc_node));
 467
 468         p->type = MDOC_BODY;
 469         p->data.body.tok = tok;
 470
 471         mdoc_node_append(mdoc, pos, p);
 472 }
 473
 474
 475 void
 476 mdoc_block_alloc(struct mdoc *mdoc, int pos, int tok,
 477                 size_t argsz, const struct mdoc_arg *args)
 478 {
 479         struct mdoc_node *p;
 480
 481         p = xcalloc(1, sizeof(struct mdoc_node));
 482
 483         p->type = MDOC_BLOCK;
 484         p->data.block.tok = tok;
 485         p->data.block.argc = argsz;
 486         p->data.block.argv = argdup(argsz, args);
 487
 488         mdoc_node_append(mdoc, pos, p);
 489 }
 490
 491
 492 void
 493 mdoc_elem_alloc(struct mdoc *mdoc, int pos, int tok,
 494                 size_t argsz, const struct mdoc_arg *args,
 495                 size_t paramsz, const char **params)
 496 {
 497         struct mdoc_node *p;
 498
 499         p = xcalloc(1, sizeof(struct mdoc_node));
 500         p->type = MDOC_ELEM;
 501         p->data.elem.tok = tok;
 502         p->data.elem.sz = paramsz;
 503         p->data.elem.args = paramdup(paramsz, params);
 504         p->data.elem.argc = argsz;
 505         p->data.elem.argv = argdup(argsz, args);
 506
 507         mdoc_node_append(mdoc, pos, p);
 508 }
 509
 510
 511 void
 512 mdoc_word_alloc(struct mdoc *mdoc, int pos, const char *word)
 513 {
 514         struct mdoc_node *p;
 515
 516         p = xcalloc(1, sizeof(struct mdoc_node));
 517         p->type = MDOC_TEXT;
 518         p->data.text.string = xstrdup(word);
 519
 520         mdoc_node_append(mdoc, pos, p);
 521 }
 522
 523
 524 static void
 525 argfree(size_t sz, struct mdoc_arg *p)
 526 {
 527         int              i, j;
 528
 529         if (0 == sz)
 530                 return;
 531
 532         assert(p);
 533         /* LINTED */
 534         for (i = 0; i < (int)sz; i++)
 535                 if (p[i].sz > 0) {
 536                         assert(p[i].value);
 537                         /* LINTED */
 538                         for (j = 0; j < (int)p[i].sz; j++)
 539                                 free(p[i].value[j]);
 540                 }
 541         free(p);
 542 }
 543
 544
 545 static void
 546 mdoc_elem_free(struct mdoc_elem *p)
 547 {
 548
 549         paramfree(p->sz, p->args);
 550         argfree(p->argc, p->argv);
 551 }
 552
 553
 554 static void
 555 mdoc_block_free(struct mdoc_block *p)
 556 {
 557
 558         argfree(p->argc, p->argv);
 559 }
 560
 561
 562 static void
 563 mdoc_text_free(struct mdoc_text *p)
 564 {
 565
 566         if (p->string)
 567                 free(p->string);
 568 }
 569
 570
 571 void
 572 mdoc_node_free(struct mdoc_node *p)
 573 {
 574
 575         switch (p->type) {
 576         case (MDOC_TEXT):
 577                 mdoc_text_free(&p->data.text);
 578                 break;
 579         case (MDOC_ELEM):
 580                 mdoc_elem_free(&p->data.elem);
 581                 break;
 582         case (MDOC_BLOCK):
 583                 mdoc_block_free(&p->data.block);
 584                 break;
 585         default:
 586                 break;
 587         }
 588
 589         free(p);
 590 }
 591
 592
 593 static void
 594 mdoc_node_freelist(struct mdoc_node *p)
 595 {
 596
 597         if (p->child)
 598                 mdoc_node_freelist(p->child);
 599         if (p->next)
 600                 mdoc_node_freelist(p->next);
 601
 602         mdoc_node_free(p);
 603 }
 604
 605
 606 int
 607 mdoc_find(const struct mdoc *mdoc, const char *key)
 608 {
 609
 610         return(mdoc_tokhash_find(mdoc->htab, key));
 611 }
 612
 613
 614 static void
 615 argcpy(struct mdoc_arg *dst, const struct mdoc_arg *src)
 616 {
 617         int              i;
 618
 619         dst->arg = src->arg;
 620         if (0 == (dst->sz = src->sz))
 621                 return;
 622         dst->value = xcalloc(dst->sz, sizeof(char *));
 623         for (i = 0; i < (int)dst->sz; i++)
 624                 dst->value[i] = xstrdup(src->value[i]);
 625 }
 626
 627
 628 static struct mdoc_arg *
 629 argdup(size_t argsz, const struct mdoc_arg *args)
 630 {
 631         struct mdoc_arg *pp;
 632         int              i;
 633
 634         if (0 == argsz)
 635                 return(NULL);
 636
 637         pp = xcalloc((size_t)argsz, sizeof(struct mdoc_arg));
 638         for (i = 0; i < (int)argsz; i++)
 639                 argcpy(&pp[i], &args[i]);
 640
 641         return(pp);
 642 }
 643
 644
 645 static void
 646 paramfree(size_t sz, char **p)
 647 {
 648         int              i;
 649
 650         if (0 == sz)
 651                 return;
 652
 653         assert(p);
 654         /* LINTED */
 655         for (i = 0; i < (int)sz; i++)
 656                 free(p[i]);
 657         free(p);
 658 }
 659
 660
 661 static char **
 662 paramdup(size_t sz, const char **p)
 663 {
 664         char            **pp;
 665         int               i;
 666
 667         if (0 == sz)
 668                 return(NULL);
 669
 670         pp = xcalloc(sz, sizeof(char *));
 671         for (i = 0; i < (int)sz; i++)
 672                 pp[i] = xstrdup(p[i]);
 673
 674         return(pp);
 675 }