sdk/tools/isohybrid/reactos_support_code.c

   1 #include "reactos_support_code.h"
   2
   3 void
   4 isohybrid_error(int eval, const char* fmt, ...)
   5 {
   6     va_list ap;
   7     va_start(ap, fmt);
   8     fprintf(stderr, "isohybrid: ");
   9     vfprintf(stderr, fmt, ap);
  10     va_end(ap);
  11     exit(eval);
  12 }
  13
  14 void
  15 isohybrid_warning(const char *fmt, ...)
  16 {
  17     va_list ap;
  18     va_start(ap, fmt);
  19     fprintf(stderr, "isohybrid: ");
  20     vfprintf(stderr, fmt, ap);
  21     va_end(ap);
  22 }
  23
  24 /////////////////////////////////////////////////////////////////////////////
  25 // getopt code from mingw-w64
  26 /////////////////////////////////////////////////////////////////////////////
  27 /*      $OpenBSD: getopt_long.c,v 1.23 2007/10/31 12:34:57 chl Exp $    */
  28 /*      $NetBSD: getopt_long.c,v 1.15 2002/01/31 22:43:40 tv Exp $      */
  29
  30 /*
  31  * Copyright (c) 2002 Todd C. Miller <Todd.Miller@courtesan.com>
  32  *
  33  * Permission to use, copy, modify, and distribute this software for any
  34  * purpose with or without fee is hereby granted, provided that the above
  35  * copyright notice and this permission notice appear in all copies.
  36  *
  37  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  38  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  39  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  40  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  41  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  42  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  43  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  44  *
  45  * Sponsored in part by the Defense Advanced Research Projects
  46  * Agency (DARPA) and Air Force Research Laboratory, Air Force
  47  * Materiel Command, USAF, under agreement number F39502-99-1-0512.
  48  */
  49 /*-
  50  * Copyright (c) 2000 The NetBSD Foundation, Inc.
  51  * All rights reserved.
  52  *
  53  * This code is derived from software contributed to The NetBSD Foundation
  54  * by Dieter Baron and Thomas Klausner.
  55  *
  56  * Redistribution and use in source and binary forms, with or without
  57  * modification, are permitted provided that the following conditions
  58  * are met:
  59  * 1. Redistributions of source code must retain the above copyright
  60  *    notice, this list of conditions and the following disclaimer.
  61  * 2. Redistributions in binary form must reproduce the above copyright
  62  *    notice, this list of conditions and the following disclaimer in the
  63  *    documentation and/or other materials provided with the distribution.
  64  *
  65  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  66  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  67  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  68  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  69  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  70  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  71  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  72  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  73  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  74  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  75  * POSSIBILITY OF SUCH DAMAGE.
  76  */
  77 int     opterr = 1;             /* if error message should be printed */
  78 int     optind = 1;             /* index into parent argv vector */
  79
  80 ///// REACTOS ONLY: optopt set to 0 by default, because isohybrid needs this
  81 int     optopt = 0; /* character checked for validity */
  82
  83 int     optreset;               /* reset getopt */
  84 char *optarg; /* argument associated with option */
  85
  86 #define PRINT_ERROR     ((opterr) && (*options != ':'))
  87
  88 #define FLAG_PERMUTE    0x01    /* permute non-options to the end of argv */
  89 #define FLAG_ALLARGS    0x02 /* treat non-options as args to option "-1" */
  90 #define FLAG_LONGONLY   0x04 /* operate as getopt_long_only */
  91
  92 /* return values */
  93 #define BADCH   (int)'?'
  94 #define BADARG  ((*options == ':') ? (int)':' : (int)'?')
  95 #define INORDER (int)1
  96
  97 #define EMSG    ""
  98
  99 static char *place = EMSG; /* option letter processing */
 100
 101 /* XXX: set optreset to 1 rather than these two */
 102 static int nonopt_start = -1; /* first non option argument (for permute) */
 103 static int nonopt_end = -1; /* first option after non options (for permute) */
 104
 105 /* Error messages */
 106 static const char recargchar[] = "option requires an argument -- %c";
 107 static const char recargstring[] = "option requires an argument -- %s";
 108 static const char ambig[] = "ambiguous option -- %.*s";
 109 static const char noarg[] = "option doesn't take an argument -- %.*s";
 110 static const char illoptchar[] = "unknown option -- %c";
 111 static const char illoptstring[] = "unknown option -- %s";
 112
 113 /*
 114 * Compute the greatest common divisor of a and b.
 115 */
 116 static int
 117 gcd(int a, int b)
 118 {
 119     int c;
 120
 121     c = a % b;
 122     while (c != 0) {
 123         a = b;
 124         b = c;
 125         c = a % b;
 126     }
 127
 128     return (b);
 129 }
 130
 131 /*
 132 * Exchange the block from nonopt_start to nonopt_end with the block
 133 * from nonopt_end to opt_end (keeping the same order of arguments
 134 * in each block).
 135 */
 136 static void
 137 permute_args(int panonopt_start, int panonopt_end, int opt_end,
 138 char * const *nargv)
 139 {
 140     int cstart, cyclelen, i, j, ncycle, nnonopts, nopts, pos;
 141     char *swap;
 142
 143     /*
 144     * compute lengths of blocks and number and size of cycles
 145     */
 146     nnonopts = panonopt_end - panonopt_start;
 147     nopts = opt_end - panonopt_end;
 148     ncycle = gcd(nnonopts, nopts);
 149     cyclelen = (opt_end - panonopt_start) / ncycle;
 150
 151     for (i = 0; i < ncycle; i++) {
 152         cstart = panonopt_end + i;
 153         pos = cstart;
 154         for (j = 0; j < cyclelen; j++) {
 155             if (pos >= panonopt_end)
 156                 pos -= nnonopts;
 157             else
 158                 pos += nopts;
 159             swap = nargv[pos];
 160             /* LINTED const cast */
 161             ((char **)nargv)[pos] = nargv[cstart];
 162             /* LINTED const cast */
 163             ((char **)nargv)[cstart] = swap;
 164         }
 165     }
 166 }
 167
 168 /*
 169 * parse_long_options --
 170 *       Parse long options in argc/argv argument vector.
 171 * Returns -1 if short_too is set and the option does not match long_options.
 172 */
 173 static int
 174 parse_long_options(char * const *nargv, const char *options,
 175 const struct option *long_options, int *idx, int short_too)
 176 {
 177     char *current_argv, *has_equal;
 178     size_t current_argv_len;
 179     int i, ambiguous, match;
 180
 181 #define IDENTICAL_INTERPRETATION(_x, _y)                                \
 182         (long_options[(_x)].has_arg == long_options[(_y)].has_arg &&    \
 183          long_options[(_x)].flag == long_options[(_y)].flag &&          \
 184          long_options[(_x)].val == long_options[(_y)].val)
 185
 186     current_argv = place;
 187     match = -1;
 188     ambiguous = 0;
 189
 190     optind++;
 191
 192     if ((has_equal = strchr(current_argv, '=')) != NULL) {
 193         /* argument found (--option=arg) */
 194         current_argv_len = has_equal - current_argv;
 195         has_equal++;
 196     }
 197     else
 198         current_argv_len = strlen(current_argv);
 199
 200     for (i = 0; long_options[i].name; i++) {
 201         /* find matching long option */
 202         if (strncmp(current_argv, long_options[i].name,
 203             current_argv_len))
 204             continue;
 205
 206         if (strlen(long_options[i].name) == current_argv_len) {
 207             /* exact match */
 208             match = i;
 209             ambiguous = 0;
 210             break;
 211         }
 212         /*
 213         * If this is a known short option, don't allow
 214         * a partial match of a single character.
 215         */
 216         if (short_too && current_argv_len == 1)
 217             continue;
 218
 219         if (match == -1)        /* partial match */
 220             match = i;
 221         else if (!IDENTICAL_INTERPRETATION(i, match))
 222             ambiguous = 1;
 223     }
 224     if (ambiguous) {
 225         /* ambiguous abbreviation */
 226         if (PRINT_ERROR)
 227             warnx(ambig, (int)current_argv_len,
 228             current_argv);
 229         optopt = 0;
 230         return (BADCH);
 231     }
 232     if (match != -1) {          /* option found */
 233         if (long_options[match].has_arg == no_argument
 234             && has_equal) {
 235             if (PRINT_ERROR)
 236                 warnx(noarg, (int)current_argv_len,
 237                 current_argv);
 238             /*
 239             * XXX: GNU sets optopt to val regardless of flag
 240             */
 241             if (long_options[match].flag == NULL)
 242                 optopt = long_options[match].val;
 243             else
 244                 optopt = 0;
 245             return (BADARG);
 246         }
 247         if (long_options[match].has_arg == required_argument ||
 248             long_options[match].has_arg == optional_argument) {
 249             if (has_equal)
 250                 optarg = has_equal;
 251             else if (long_options[match].has_arg ==
 252                 required_argument) {
 253                 /*
 254                 * optional argument doesn't use next nargv
 255                 */
 256                 optarg = nargv[optind++];
 257             }
 258         }
 259         if ((long_options[match].has_arg == required_argument)
 260             && (optarg == NULL)) {
 261             /*
 262             * Missing argument; leading ':' indicates no error
 263             * should be generated.
 264             */
 265             if (PRINT_ERROR)
 266                 warnx(recargstring,
 267                 current_argv);
 268             /*
 269             * XXX: GNU sets optopt to val regardless of flag
 270             */
 271             if (long_options[match].flag == NULL)
 272                 optopt = long_options[match].val;
 273             else
 274                 optopt = 0;
 275             --optind;
 276             return (BADARG);
 277         }
 278     }
 279     else {                      /* unknown option */
 280         if (short_too) {
 281             --optind;
 282             return (-1);
 283         }
 284         if (PRINT_ERROR)
 285             warnx(illoptstring, current_argv);
 286         optopt = 0;
 287         return (BADCH);
 288     }
 289     if (idx)
 290         *idx = match;
 291     if (long_options[match].flag) {
 292         *long_options[match].flag = long_options[match].val;
 293         return (0);
 294     }
 295     else
 296         return (long_options[match].val);
 297 #undef IDENTICAL_INTERPRETATION
 298 }
 299
 300 /*
 301 * getopt_internal --
 302 *       Parse argc/argv argument vector.  Called by user level routines.
 303 */
 304 static int
 305 getopt_internal(int nargc, char * const *nargv, const char *options,
 306 const struct option *long_options, int *idx, int flags)
 307 {
 308     char *oli;                          /* option letter list index */
 309     int optchar, short_too;
 310     static int posixly_correct = -1;
 311
 312     if (options == NULL)
 313         return (-1);
 314
 315     /*
 316     * XXX Some GNU programs (like cvs) set optind to 0 instead of
 317     * XXX using optreset.  Work around this braindamage.
 318     */
 319     if (optind == 0)
 320         optind = optreset = 1;
 321
 322     /*
 323     * Disable GNU extensions if POSIXLY_CORRECT is set or options
 324     * string begins with a '+'.
 325     *
 326     * CV, 2009-12-14: Check POSIXLY_CORRECT anew if optind == 0 or
 327     *                 optreset != 0 for GNU compatibility.
 328     */
 329     if (posixly_correct == -1 || optreset != 0)
 330         posixly_correct = (getenv("POSIXLY_CORRECT") != NULL);
 331     if (*options == '-')
 332         flags |= FLAG_ALLARGS;
 333     else if (posixly_correct || *options == '+')
 334         flags &= ~FLAG_PERMUTE;
 335     if (*options == '+' || *options == '-')
 336         options++;
 337
 338     optarg = NULL;
 339     if (optreset)
 340         nonopt_start = nonopt_end = -1;
 341 start:
 342     if (optreset || !*place) {          /* update scanning pointer */
 343         optreset = 0;
 344         if (optind >= nargc) {          /* end of argument vector */
 345             place = EMSG;
 346             if (nonopt_end != -1) {
 347                 /* do permutation, if we have to */
 348                 permute_args(nonopt_start, nonopt_end,
 349                     optind, nargv);
 350                 optind -= nonopt_end - nonopt_start;
 351             }
 352             else if (nonopt_start != -1) {
 353                 /*
 354                 * If we skipped non-options, set optind
 355                 * to the first of them.
 356                 */
 357                 optind = nonopt_start;
 358             }
 359             nonopt_start = nonopt_end = -1;
 360             return (-1);
 361         }
 362         if (*(place = nargv[optind]) != '-' ||
 363             (place[1] == '\0' && strchr(options, '-') == NULL)) {
 364             place = EMSG;               /* found non-option */
 365             if (flags & FLAG_ALLARGS) {
 366                 /*
 367                 * GNU extension:
 368                 * return non-option as argument to option 1
 369                 */
 370                 optarg = nargv[optind++];
 371                 return (INORDER);
 372             }
 373             if (!(flags & FLAG_PERMUTE)) {
 374                 /*
 375                 * If no permutation wanted, stop parsing
 376                 * at first non-option.
 377                 */
 378                 return (-1);
 379             }
 380             /* do permutation */
 381             if (nonopt_start == -1)
 382                 nonopt_start = optind;
 383             else if (nonopt_end != -1) {
 384                 permute_args(nonopt_start, nonopt_end,
 385                     optind, nargv);
 386                 nonopt_start = optind -
 387                     (nonopt_end - nonopt_start);
 388                 nonopt_end = -1;
 389             }
 390             optind++;
 391             /* process next argument */
 392             goto start;
 393         }
 394         if (nonopt_start != -1 && nonopt_end == -1)
 395             nonopt_end = optind;
 396
 397         /*
 398         * If we have "-" do nothing, if "--" we are done.
 399         */
 400         if (place[1] != '\0' && *++place == '-' && place[1] == '\0') {
 401             optind++;
 402             place = EMSG;
 403             /*
 404             * We found an option (--), so if we skipped
 405             * non-options, we have to permute.
 406             */
 407             if (nonopt_end != -1) {
 408                 permute_args(nonopt_start, nonopt_end,
 409                     optind, nargv);
 410                 optind -= nonopt_end - nonopt_start;
 411             }
 412             nonopt_start = nonopt_end = -1;
 413             return (-1);
 414         }
 415     }
 416
 417     /*
 418     * Check long options if:
 419     *  1) we were passed some
 420     *  2) the arg is not just "-"
 421     *  3) either the arg starts with -- we are getopt_long_only()
 422     */
 423     if (long_options != NULL && place != nargv[optind] &&
 424         (*place == '-' || (flags & FLAG_LONGONLY))) {
 425         short_too = 0;
 426         if (*place == '-')
 427             place++;            /* --foo long option */
 428         else if (*place != ':' && strchr(options, *place) != NULL)
 429             short_too = 1;              /* could be short option too */
 430
 431         optchar = parse_long_options(nargv, options, long_options,
 432             idx, short_too);
 433         if (optchar != -1) {
 434             place = EMSG;
 435             return (optchar);
 436         }
 437     }
 438
 439     if ((optchar = (int)*place++) == (int)':' ||
 440         (optchar == (int)'-' && *place != '\0') ||
 441         (oli = strchr(options, optchar)) == NULL) {
 442         /*
 443         * If the user specified "-" and  '-' isn't listed in
 444         * options, return -1 (non-option) as per POSIX.
 445         * Otherwise, it is an unknown option character (or ':').
 446         */
 447         if (optchar == (int)'-' && *place == '\0')
 448             return (-1);
 449         if (!*place)
 450             ++optind;
 451         if (PRINT_ERROR)
 452             warnx(illoptchar, optchar);
 453         optopt = optchar;
 454         return (BADCH);
 455     }
 456     if (long_options != NULL && optchar == 'W' && oli[1] == ';') {
 457         /* -W long-option */
 458         if (*place)                     /* no space */
 459             /* NOTHING */;
 460         else if (++optind >= nargc) {   /* no arg */
 461             place = EMSG;
 462             if (PRINT_ERROR)
 463                 warnx(recargchar, optchar);
 464             optopt = optchar;
 465             return (BADARG);
 466         }
 467         else                            /* white space */
 468             place = nargv[optind];
 469         optchar = parse_long_options(nargv, options, long_options,
 470             idx, 0);
 471         place = EMSG;
 472         return (optchar);
 473     }
 474     if (*++oli != ':') {                        /* doesn't take argument */
 475         if (!*place)
 476             ++optind;
 477     }
 478     else {                              /* takes (optional) argument */
 479         optarg = NULL;
 480         if (*place)                     /* no white space */
 481             optarg = place;
 482         else if (oli[1] != ':') {       /* arg not optional */
 483             if (++optind >= nargc) {    /* no arg */
 484                 place = EMSG;
 485                 if (PRINT_ERROR)
 486                     warnx(recargchar, optchar);
 487                 optopt = optchar;
 488                 return (BADARG);
 489             }
 490             else
 491                 optarg = nargv[optind];
 492         }
 493         place = EMSG;
 494         ++optind;
 495     }
 496     /* dump back option letter */
 497     return (optchar);
 498 }
 499
 500 /*
 501 * getopt_long_only --
 502 *       Parse argc/argv argument vector.
 503 */
 504 int
 505 getopt_long_only(int nargc, char * const *nargv, const char *options,
 506 const struct option *long_options, int *idx)
 507 {
 508
 509     return (getopt_internal(nargc, nargv, options, long_options, idx,
 510         FLAG_PERMUTE | FLAG_LONGONLY));
 511 }
 512 /////////////////////////////////////////////////////////////////////////////
 513
 514 #ifdef _WIN32
 515 int
 516 fsync(int fd)
 517 {
 518     HANDLE hFile = (HANDLE)_get_osfhandle(fd);
 519     if (hFile == INVALID_HANDLE_VALUE)
 520         return 1;
 521
 522     return !FlushFileBuffers(hFile);
 523 }
 524
 525 int
 526 getppid(void)
 527 {
 528     // Just return any nonzero value under Windows to enable isohybrid's usage
 529     // as a part of srand initialization.
 530     return 1;
 531 }
 532 #endif