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/* Main for jv-scan
Copyright (C) 1998 Free Software Foundation, Inc.
Contributed by Alexandre Petit-Bianco (apbianco@cygnus.com)
This file is part of GNU CC.
GNU CC 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 2, or (at your option)
any later version.
GNU CC 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 GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <stdio.h>
#include <stdlib.h>
#ifdef __STDC__
#include <stdarg.h>
#else
#include <varargs.h>
#endif
#include "gansidecl.h" /* Definitions of PROTO and VPROTO */
#include "obstack.h" /* We use obstacks in lex.c */
void fatal VPROTO((char *s, ...));
void warning VPROTO((char *s, ...));
void gcc_obstack_init PROTO ((struct obstack *obstack));
extern void reset_report PROTO ((void));
#define JC1_LITE
#include "parse.h"
/* Current input file and output file IO streams. */
FILE *finput, *out;
/* Current input filename. */
char *input_filename;
/* Executable name. */
char *exec_name;
/* Flags matching command line options. */
int flag_find_main = 0;
int flag_dump_class = 0;
int flag_list_filename = 0;
/* jc1-lite main entry point */
int
main (argc, argv, envp)
int argc;
char **argv;
char **envp;
{
int i = 1;
char *output_file = NULL;
long ft;
exec_name = argv[0];
/* Default for output */
out = stdout;
/* Process options first */
while (argv [i])
{
if (argv [i][0] == '-')
{
/* Dump result into a file */
if (!strcmp (argv [i], "-o") && i+1 < argc)
{
argv [i] = NULL;
output_file = argv [++i];
argv [i] = NULL;
}
/* Print the name of the class that contains main */
else if (!strcmp (argv [i], "--print-main"))
flag_find_main = 1;
else if (!strcmp (argv [i], "--list-filename"))
flag_list_filename = 1;
/* List all the classes found in a source file */
else if (!strcmp (argv [i], "--list-class"))
flag_dump_class = 1;
else
warning ("Unrecognized argument `%s'", argv[i]);
/* non recognized argument ignored silently */
argv [i] = NULL; /* Nullify so it's not considered a file */
}
i++;
}
/* No flags? Do nothing */
if (!flag_find_main && !flag_dump_class)
exit (0);
/* Check on bad usage */
if (flag_find_main && flag_dump_class)
fatal ("Options `--print-main' and `--list-class' can't be turned on "
"at the same time", argv [0]);
if (output_file && !(out = fopen (output_file, "w")))
fatal ("Can't open output file `%s'", argv [0], output_file);
ft = ftell (out);
gcc_obstack_init (&temporary_obstack);
java_push_parser_context ();
for ( i = 1; i < argc; i++ )
if (argv [i])
{
input_filename = argv [i];
if ( (finput = fopen (argv [i], "r")) )
{
java_init_lex ();
yyparse ();
if (ftell (out) != ft)
fputc ('\n', out);
ft = ftell (out);
fclose (finput);
reset_report ();
}
else
fatal ("File not found `%s'", argv [0], argv [i]);
}
/* Flush and close */
if (ftell (out) != ft)
fputc ('\n', out);
if (!output_file)
fclose (out);
exit (0);
}
/* Error report, memory, obstack initialization and other utility
functions */
void
fatal VPROTO((char *s, ...))
{
#ifndef __STDC__
char *s;
#endif
va_list ap;
VA_START (ap, s);
#ifndef __STDC__
s = va_arg (ap, char *);
#endif
fprintf (stderr, "%s: error: ", exec_name);
vfprintf (stderr, s, ap);
fputc ('\n', stderr);
va_end (ap);
exit (1);
}
char *
xmalloc (size)
unsigned size;
{
register char *value;
if (size == 0)
size = 1;
value = (char *) malloc (size);
if (value == 0)
fatal ("virtual memory exhausted");
return value;
}
char *
xstrdup (string)
char *string;
{
int length = strlen (string)+1;
char *to_return = xmalloc (length);
strcpy (to_return, string);
return to_return;
}
void
warning VPROTO((char *s, ...))
{
#ifndef __STDC__
char *s;
#endif
va_list ap;
VA_START (ap, s);
#ifndef __STDC__
s = va_arg (ap, char *);
#endif
fprintf (stderr, "%s: warning: ", exec_name);
vfprintf (stderr, s, ap);
fputc ('\n', stderr);
va_end (ap);
}
void
gcc_obstack_init (obstack)
struct obstack *obstack;
{
/* Let particular systems override the size of a chunk. */
#ifndef OBSTACK_CHUNK_SIZE
#define OBSTACK_CHUNK_SIZE 0
#endif
/* Let them override the alloc and free routines too. */
#ifndef OBSTACK_CHUNK_ALLOC
#define OBSTACK_CHUNK_ALLOC xmalloc
#endif
#ifndef OBSTACK_CHUNK_FREE
#define OBSTACK_CHUNK_FREE free
#endif
_obstack_begin (obstack, OBSTACK_CHUNK_SIZE, 0,
(void *(*) ()) OBSTACK_CHUNK_ALLOC,
(void (*) ()) OBSTACK_CHUNK_FREE);
}
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