198 lines
4.8 KiB
C
198 lines
4.8 KiB
C
/* Program to generate "main" a Java(TM) class containing a main method.
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Copyright (C) 1998-2016 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>.
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Java and all Java-based marks are trademarks or registered trademarks
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of Sun Microsystems, Inc. in the United States and other countries.
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The Free Software Foundation is independent of Sun Microsystems, Inc. */
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/* Written by Per Bothner <bothner@cygnus.com> */
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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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#include "tree.h"
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#include "diagnostic.h"
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#include "java-tree.h"
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#include "intl.h"
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static char * do_mangle_classname (const char *string);
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struct obstack name_obstack;
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struct obstack *mangle_obstack = &name_obstack;
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static void usage (const char *) ATTRIBUTE_NORETURN;
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static void
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usage (const char *name)
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{
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fprintf (stderr, _("Usage: %s [OPTIONS]... CLASSNAMEmain [OUTFILE]\n"),
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name);
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exit (1);
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}
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int
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main (int argc, char **argv)
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{
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char *classname, *p;
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FILE *stream;
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const char *mangled_classname;
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int i, last_arg;
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int indirect = 0;
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char *prog_name = argv[0];
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p = argv[0] + strlen (argv[0]);
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while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
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--p;
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progname = p;
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xmalloc_set_program_name (progname);
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/* Unlock the stdio streams. */
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unlock_std_streams ();
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gcc_init_libintl ();
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diagnostic_initialize (global_dc, 0);
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if (argc > 1 && ! strcmp (argv[1], "-findirect-dispatch"))
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{
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indirect = 1;
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++argv;
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--argc;
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}
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if (argc < 2)
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usage (prog_name);
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for (i = 1; i < argc; ++i)
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{
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if (! strncmp (argv[i], "-D", 2))
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{
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/* Handled later. Check "-D XXX=YYY". */
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if (argv[i][2] == '\0')
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i++;
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}
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else
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break;
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}
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if (i < argc - 2 || i == argc)
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usage (prog_name);
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last_arg = i;
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classname = argv[i];
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/* gcj always appends `main' to classname. We need to strip this here. */
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p = strrchr (classname, 'm');
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if (p == NULL || p == classname || strcmp (p, "main") != 0)
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usage (prog_name);
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else
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*p = '\0';
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gcc_obstack_init (mangle_obstack);
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mangled_classname = do_mangle_classname (classname);
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if (i < argc - 1 && strcmp (argv[i + 1], "-") != 0)
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{
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const char *outfile = argv[i + 1];
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stream = fopen (outfile, "w");
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if (stream == NULL)
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{
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fprintf (stderr, _("%s: Cannot open output file: %s\n"),
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prog_name, outfile);
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exit (1);
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}
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}
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else
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stream = stdout;
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/* At this point every element of ARGV from 1 to LAST_ARG is a `-D'
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option. Process them appropriately. */
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fprintf (stream, "extern const char **_Jv_Compiler_Properties;\n");
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if (indirect)
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fprintf (stream, "extern void JvRunMainName ();\n");
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else
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fprintf (stream, "extern void JvRunMain ();\n");
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fprintf (stream, "static const char *props[] =\n{\n");
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for (i = 1; i < last_arg; ++i)
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{
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const char *p;
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if (strcmp (argv[i], "-D") == 0)
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continue;
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fprintf (stream, " \"");
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for (p = argv[i]; *p; ++p)
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{
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if (! ISPRINT (*p))
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fprintf (stream, "\\%o", *p);
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else if (*p == '\\' || *p == '"')
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fprintf (stream, "\\%c", *p);
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else
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putc (*p, stream);
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}
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fprintf (stream, "\",\n");
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}
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fprintf (stream, " 0\n};\n\n");
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fprintf (stream, "int main (int argc, const char **argv)\n");
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fprintf (stream, "{\n");
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fprintf (stream, " _Jv_Compiler_Properties = props;\n");
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if (indirect)
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fprintf (stream, " JvRunMainName (\"%s\", argc, argv);\n", classname);
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else
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{
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fprintf (stream, " extern char %s;\n", mangled_classname);
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fprintf (stream, " JvRunMain (&%s, argc, argv);\n", mangled_classname);
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}
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fprintf (stream, "}\n");
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if (stream != stdout && fclose (stream) != 0)
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{
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fprintf (stderr, _("%s: Failed to close output file %s\n"),
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prog_name, argv[2]);
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exit (1);
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}
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return 0;
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}
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static char *
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do_mangle_classname (const char *string)
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{
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const char *ptr;
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int count = 0;
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obstack_grow (&name_obstack, "_ZN", 3);
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for (ptr = string; *ptr; ptr++ )
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{
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if (*ptr == '.')
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{
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append_gpp_mangled_name (ptr - count, count);
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count = 0;
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}
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else
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count++;
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}
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append_gpp_mangled_name (&ptr [-count], count);
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obstack_grow (mangle_obstack, "6class$E", strlen ("6class$E"));
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obstack_1grow (mangle_obstack, '\0');
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return XOBFINISH (mangle_obstack, char *);
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}
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