1 /* Program to generate "main" a Java(TM) class containing a main method.
2 Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU CC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU CC; see the file COPYING. If not, write to
18 the Free Software Foundation, 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA.
21 Java and all Java-based marks are trademarks or registered trademarks
22 of Sun Microsystems, Inc. in the United States and other countries.
23 The Free Software Foundation is independent of Sun Microsystems, Inc. */
25 /* Written by Per Bothner <bothner@cygnus.com> */
32 #include "java-tree.h"
34 static char * do_mangle_classname
PARAMS ((const char *string
));
36 struct obstack name_obstack
;
37 struct obstack
*mangle_obstack
= &name_obstack
;
40 gcc_obstack_init (obstack
)
41 struct obstack
*obstack
;
43 /* Let particular systems override the size of a chunk. */
44 #ifndef OBSTACK_CHUNK_SIZE
45 #define OBSTACK_CHUNK_SIZE 0
47 /* Let them override the alloc and free routines too. */
48 #ifndef OBSTACK_CHUNK_ALLOC
49 #define OBSTACK_CHUNK_ALLOC xmalloc
51 #ifndef OBSTACK_CHUNK_FREE
52 #define OBSTACK_CHUNK_FREE free
54 _obstack_begin (obstack
, OBSTACK_CHUNK_SIZE
, 0,
55 (void *(*) PARAMS ((long))) OBSTACK_CHUNK_ALLOC
,
56 (void (*) PARAMS ((void *))) OBSTACK_CHUNK_FREE
);
59 static void usage (const char *) ATTRIBUTE_NORETURN
;
62 usage (const char *name
)
64 fprintf (stderr
, "Usage: %s [OPTIONS]... CLASSNAMEmain [OUTFILE]\n", name
);
69 main (int argc
, char **argv
)
73 const char *mangled_classname
;
79 for (i
= 1; i
< argc
; ++i
)
81 if (! strncmp (argv
[i
], "-D", 2))
89 if (i
< argc
- 2 || i
== argc
)
95 /* gcj always appends `main' to classname. We need to strip this here. */
96 p
= strrchr (classname
, 'm');
97 if (p
== NULL
|| p
== classname
|| strcmp (p
, "main") != 0)
102 gcc_obstack_init (mangle_obstack
);
103 mangled_classname
= do_mangle_classname (classname
);
105 if (i
< argc
- 1 && strcmp (argv
[i
+ 1], "-") != 0)
107 const char *outfile
= argv
[i
+ 1];
108 stream
= fopen (outfile
, "w");
111 fprintf (stderr
, "%s: Cannot open output file: %s\n",
119 /* At this point every element of ARGV from 1 to LAST_ARG is a `-D'
120 option. Process them appropriately. */
121 fprintf (stream
, "extern const char **_Jv_Compiler_Properties;\n");
122 fprintf (stream
, "static const char *props[] =\n{\n");
123 for (i
= 1; i
< last_arg
; ++i
)
126 fprintf (stream
, " \"");
127 for (p
= &argv
[i
][2]; *p
; ++p
)
130 fprintf (stream
, "\\%o", *p
);
131 else if (*p
== '\\' || *p
== '"')
132 fprintf (stream
, "\\%c", *p
);
136 fprintf (stream
, "\",\n");
138 fprintf (stream
, " 0\n};\n\n");
140 fprintf (stream
, "extern int %s;\n", mangled_classname
);
141 fprintf (stream
, "int main (int argc, const char **argv)\n");
142 fprintf (stream
, "{\n");
143 fprintf (stream
, " _Jv_Compiler_Properties = props;\n");
144 fprintf (stream
, " JvRunMain (&%s, argc, argv);\n", mangled_classname
);
145 fprintf (stream
, "}\n");
146 if (stream
!= stdout
&& fclose (stream
) != 0)
148 fprintf (stderr
, "%s: Failed to close output file %s\n",
157 do_mangle_classname (string
)
163 obstack_grow (&name_obstack
, "_ZN", 3);
165 for (ptr
= string
; *ptr
; ptr
++ )
169 append_gpp_mangled_name (&ptr
[-count
], count
);
175 append_gpp_mangled_name (&ptr
[-count
], count
);
176 obstack_grow (mangle_obstack
, "6class$E", 8);
177 obstack_1grow (mangle_obstack
, '\0');
178 return obstack_finish (mangle_obstack
);