Daily bump.
[official-gcc.git] / libjava / gij.cc
blobbb56b112b6db636149d64ad7d2282a6f2d6ced7d
1 /* Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation
3 This file is part of libgcj.
5 This software is copyrighted work licensed under the terms of the
6 Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
7 details. */
9 /* Author: Kresten Krab Thorup <krab@gnu.org> */
11 #include <config.h>
13 #include <jvm.h>
14 #include <gcj/cni.h>
15 #include <java-props.h>
17 #include <stdio.h>
18 #include <string.h>
19 #include <stdlib.h>
21 #include <java/lang/System.h>
22 #include <java/util/Properties.h>
24 static void
25 help ()
27 printf ("Usage: gij [OPTION] ... CLASS [ARGS] ...\n");
28 printf (" to interpret Java bytecodes, or\n");
29 printf (" gij -jar [OPTION] ... JARFILE [ARGS] ...\n");
30 printf (" to execute a jar file\n\n");
31 printf (" -DVAR=VAL define property VAR with value VAL\n");
32 printf (" --help print this help, then exit\n");
33 printf (" --ms=NUMBER set initial heap size\n");
34 printf (" --mx=NUMBER set maximum heap size\n");
35 printf (" --version print version number, then exit\n");
36 printf ("\nSee http://gcc.gnu.org/java/ for information on reporting bugs\n");
37 exit (0);
40 static void
41 version ()
43 printf ("gij (GNU libgcj) version %s\n\n", __VERSION__);
44 printf ("Copyright (C) 2002 Free Software Foundation, Inc.\n");
45 printf ("This is free software; see the source for copying conditions. There is NO\n");
46 printf ("warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n");
47 exit (0);
50 int
51 main (int argc, const char **argv)
53 /* We rearrange ARGV so that all the -D options appear near the
54 beginning. */
55 int last_D_option = 0;
56 bool jar_mode = false;
58 int i;
59 for (i = 1; i < argc; ++i)
61 const char *arg = argv[i];
63 /* A non-option stops processing. */
64 if (arg[0] != '-')
65 break;
66 /* A "--" stops processing. */
67 if (! strcmp (arg, "--"))
69 ++i;
70 break;
73 if (! strncmp (arg, "-D", 2))
75 argv[last_D_option++] = arg + 2;
76 continue;
79 if (! strcmp (arg, "-jar"))
81 jar_mode = true;
82 continue;
85 /* Allow both single or double hyphen for all remaining
86 options. */
87 if (arg[1] == '-')
88 ++arg;
90 if (! strcmp (arg, "-help"))
91 help ();
92 else if (! strcmp (arg, "-version"))
93 version ();
94 /* FIXME: use getopt and avoid the ugliness here.
95 We at least need to handle the argument in a better way. */
96 else if (! strncmp (arg, "-ms=", 4))
97 _Jv_SetInitialHeapSize (arg + 4);
98 else if (! strcmp (arg, "-ms"))
100 if (i >= argc - 1)
102 no_arg:
103 fprintf (stderr, "gij: option requires an argument -- `%s'\n",
104 argv[i]);
105 fprintf (stderr, "Try `gij --help' for more information.\n");
106 exit (1);
108 _Jv_SetInitialHeapSize (argv[++i]);
110 else if (! strncmp (arg, "-mx=", 4))
111 _Jv_SetMaximumHeapSize (arg + 4);
112 else if (! strcmp (arg, "-mx"))
114 if (i >= argc - 1)
115 goto no_arg;
116 _Jv_SetMaximumHeapSize (argv[++i]);
118 else
120 fprintf (stderr, "gij: unrecognized option -- `%s'\n", argv[i]);
121 fprintf (stderr, "Try `gij --help' for more information.\n");
122 exit (1);
126 argv[last_D_option] = NULL;
127 _Jv_Compiler_Properties = argv;
129 if (argc - i < 1)
131 fprintf (stderr, "Usage: gij [OPTION] ... CLASS [ARGS] ...\n");
132 fprintf (stderr, " to invoke CLASS.main, or\n");
133 fprintf (stderr, " gij -jar [OPTION] ... JARFILE [ARGS] ...\n");
134 fprintf (stderr, " to execute a jar file\n");
135 fprintf (stderr, "Try `gij --help' for more information.\n");
136 exit (1);
139 _Jv_RunMain (NULL, argv[i], argc - i, argv + i, jar_mode);