128 lines
3.2 KiB
C++
128 lines
3.2 KiB
C++
/* Copyright (C) 1999 Free Software Foundation
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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/* Author: Kresten Krab Thorup <krab@gnu.org> */
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#include <config.h>
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#include <jvm.h>
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#include <gcj/cni.h>
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#include <java-props.h>
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#include <stdio.h>
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#include <string.h>
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#include <java/lang/System.h>
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#include <java/util/Properties.h>
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static void
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help ()
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{
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printf ("Usage: gij [OPTION] ... CLASS [ARGS] ...\n\n");
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printf ("Interpret Java bytecodes\n\n");
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printf (" -DVAR=VAL define property VAR with value VAL\n");
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printf (" --help print this help, then exit\n");
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printf (" --ms=NUMBER set initial heap size\n");
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printf (" --mx=NUMBER set maximum heap size\n");
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printf (" --version print version number, then exit\n");
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printf ("\nSee http://sourceware.cygnus.com/java/ for information on reporting bugs\n");
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exit (0);
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}
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static void
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version ()
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{
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printf ("gij (GNU libgcj) version %s\n\n", VERSION);
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printf ("Copyright (C) 1999 Free Software Foundation.\n");
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printf ("This is free software; see the source for copying conditions. There is NO\n");
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printf ("warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n");
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exit (0);
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}
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int
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main (int argc, const char **argv)
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{
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/* We rearrange ARGV so that all the -D options appear near the
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beginning. */
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int last_D_option = 0;
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int i;
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for (i = 1; i < argc; ++i)
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{
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const char *arg = argv[i];
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/* A non-option stops processing. */
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if (arg[0] != '-')
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break;
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/* A "--" stops processing. */
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if (! strcmp (arg, "--"))
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{
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++i;
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break;
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}
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if (! strncmp (arg, "-D", 2))
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{
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argv[last_D_option++] = arg + 2;
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continue;
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}
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/* Allow both single or double hyphen for all remaining
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options. */
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if (arg[1] == '-')
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++arg;
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if (! strcmp (arg, "-help"))
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help ();
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else if (! strcmp (arg, "-version"))
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version ();
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/* FIXME: use getopt and avoid the ugliness here.
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We at least need to handle the argument in a better way. */
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else if (! strncmp (arg, "-ms=", 4))
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_Jv_SetInitialHeapSize (arg + 4);
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else if (! strcmp (arg, "-ms"))
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{
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if (i >= argc - 1)
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{
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no_arg:
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fprintf (stderr, "gij: option requires an argument -- `%s'\n",
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argv[i]);
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fprintf (stderr, "Try `gij --help' for more information.\n");
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exit (1);
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}
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_Jv_SetInitialHeapSize (argv[++i]);
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}
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else if (! strncmp (arg, "-mx=", 4))
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_Jv_SetMaximumHeapSize (arg + 4);
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else if (! strcmp (arg, "-mx"))
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{
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if (i >= argc - 1)
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goto no_arg;
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_Jv_SetMaximumHeapSize (argv[++i]);
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}
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else
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{
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fprintf (stderr, "gij: unrecognized option -- `%s'\n", argv[i]);
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fprintf (stderr, "Try `gij --help' for more information.\n");
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exit (1);
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}
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}
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argv[last_D_option] = NULL;
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_Jv_Compiler_Properties = argv;
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if (argc - i < 1)
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{
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fprintf (stderr, "Usage: gij [OPTION] ... CLASS [ARGS] ...\n");
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fprintf (stderr, "Try `gij --help' for more information.\n");
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exit (1);
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}
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_Jv_RunMain (argv[i], argc - i, argv + i);
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}
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