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/* Program to generate "main" a Java(TM) class containing a main method.
Copyright (C) 1998-2015 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>.
Java and all Java-based marks are trademarks or registered trademarks
of Sun Microsystems, Inc. in the United States and other countries.
The Free Software Foundation is independent of Sun Microsystems, Inc. */
/* Written by Per Bothner <bothner@cygnus.com> */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "obstack.h"
#include "jcf.h"
#include "input.h"
#include "alias.h"
#include "symtab.h"
#include "options.h"
#include "tree.h"
#include "java-tree.h"
#include "intl.h"
#include "diagnostic.h"
static char * do_mangle_classname (const char *string);
struct obstack name_obstack;
struct obstack *mangle_obstack = &name_obstack;
static void usage (const char *) ATTRIBUTE_NORETURN;
static void
usage (const char *name)
{
fprintf (stderr, _("Usage: %s [OPTIONS]... CLASSNAMEmain [OUTFILE]\n"),
name);
exit (1);
}
int
main (int argc, char **argv)
{
char *classname, *p;
FILE *stream;
const char *mangled_classname;
int i, last_arg;
int indirect = 0;
char *prog_name = argv[0];
p = argv[0] + strlen (argv[0]);
while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
--p;
progname = p;
xmalloc_set_program_name (progname);
/* Unlock the stdio streams. */
unlock_std_streams ();
gcc_init_libintl ();
diagnostic_initialize (global_dc, 0);
if (argc > 1 && ! strcmp (argv[1], "-findirect-dispatch"))
{
indirect = 1;
++argv;
--argc;
}
if (argc < 2)
usage (prog_name);
for (i = 1; i < argc; ++i)
{
if (! strncmp (argv[i], "-D", 2))
{
/* Handled later. Check "-D XXX=YYY". */
if (argv[i][2] == '\0')
i++;
}
else
break;
}
if (i < argc - 2 || i == argc)
usage (prog_name);
last_arg = i;
classname = argv[i];
/* gcj always appends `main' to classname. We need to strip this here. */
p = strrchr (classname, 'm');
if (p == NULL || p == classname || strcmp (p, "main") != 0)
usage (prog_name);
else
*p = '\0';
gcc_obstack_init (mangle_obstack);
mangled_classname = do_mangle_classname (classname);
if (i < argc - 1 && strcmp (argv[i + 1], "-") != 0)
{
const char *outfile = argv[i + 1];
stream = fopen (outfile, "w");
if (stream == NULL)
{
fprintf (stderr, _("%s: Cannot open output file: %s\n"),
prog_name, outfile);
exit (1);
}
}
else
stream = stdout;
/* At this point every element of ARGV from 1 to LAST_ARG is a `-D'
option. Process them appropriately. */
fprintf (stream, "extern const char **_Jv_Compiler_Properties;\n");
if (indirect)
fprintf (stream, "extern void JvRunMainName ();\n");
else
fprintf (stream, "extern void JvRunMain ();\n");
fprintf (stream, "static const char *props[] =\n{\n");
for (i = 1; i < last_arg; ++i)
{
const char *p;
if (strcmp (argv[i], "-D") == 0)
continue;
fprintf (stream, " \"");
for (p = argv[i]; *p; ++p)
{
if (! ISPRINT (*p))
fprintf (stream, "\\%o", *p);
else if (*p == '\\' || *p == '"')
fprintf (stream, "\\%c", *p);
else
putc (*p, stream);
}
fprintf (stream, "\",\n");
}
fprintf (stream, " 0\n};\n\n");
fprintf (stream, "int main (int argc, const char **argv)\n");
fprintf (stream, "{\n");
fprintf (stream, " _Jv_Compiler_Properties = props;\n");
if (indirect)
fprintf (stream, " JvRunMainName (\"%s\", argc, argv);\n", classname);
else
{
fprintf (stream, " extern char %s;\n", mangled_classname);
fprintf (stream, " JvRunMain (&%s, argc, argv);\n", mangled_classname);
}
fprintf (stream, "}\n");
if (stream != stdout && fclose (stream) != 0)
{
fprintf (stderr, _("%s: Failed to close output file %s\n"),
prog_name, argv[2]);
exit (1);
}
return 0;
}
static char *
do_mangle_classname (const char *string)
{
const char *ptr;
int count = 0;
obstack_grow (&name_obstack, "_ZN", 3);
for (ptr = string; *ptr; ptr++ )
{
if (*ptr == '.')
{
append_gpp_mangled_name (ptr - count, count);
count = 0;
}
else
count++;
}
append_gpp_mangled_name (&ptr [-count], count);
obstack_grow (mangle_obstack, "6class$E", strlen ("6class$E"));
obstack_1grow (mangle_obstack, '\0');
return XOBFINISH (mangle_obstack, char *);
}
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