/*\
 *   LBPP - A GNU Compiler Compiler (GCC) Liberty Basic Frontend
 *   Copyright (C) 2001  Anthony Liguori <ajl13@bellatlantic.net>
 *
 *   LBPP 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 of the License, or
 *   (at your option) any later version.
 *
 *   LBPP 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 this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
\*/

#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "lbpp.h"

void print_usage(char *prog)
{
  printf("Usage: %s [OPTIONS] <filename.bas> [<filename.bas> ...]\n"
	 "       Options\n"
	 "        -o <filename.c>     The c source file to write to\n"
	 "        -b                  Disable including autoinc.bas\n"
	 "        -h                  Display this help screen\n"
	 "        -I <path>           Path to search for autoinc.bas\n",
	 prog);
}

int main(int argc, char **argv)
{
  FILE *o = 0;
  char line[512];
  char c_file[512] = "out.c";
  char path[512] = "../liblb";
  int i = 0;
  int auto_inc = 1;
  extern char *optarg;
  extern int optind;
  char opt;

  while ((opt = getopt(argc, argv, "o:hbI:")) != EOF)
    {
      switch (opt)
	{
	case 'o':
	  strcpy(c_file, optarg);
	  break;
	case 'h':
	  print_usage(argv[0]);
	  exit(0);
	  break;
	case 'b':
	  auto_inc = 0;
	  break;
	case 'I':
	  strcpy(path, optarg);
	  break;
	default:
	  break;
	}
    }

  if ((argc - optind) < 1)
    {
      print_usage(argv[0]);
      exit(-1);
    }

  strcat(path, "/autoinc.bas");

  o = fopen(c_file, "w");

  if (!o)
    {
      printf("%s: Could not open %s\n", argv[0], c_file);
      perror(argv[0]);
      exit(-1);
    }

  fprintf(o, 
	  "#include <lb_std_head.c>\n\n"
	  "void lb_init(LBContext *cxt)\n"
	  "{\n"
	  "setting_labels = 1;\n"
	  "goto label_0;\n"
	  "start:\n\n\n");

  if (auto_inc)
    {
      FILE *f = fopen(path, "r");

      if (!f)
	{
	  printf("%s: Could not open %s\n", argv[0], argv[i]);
	  perror(argv[0]);
	  exit(-1);
	}

      while (get_line(line, sizeof(line), f))
	{
	  translate_line(o, line);
	}

      fclose(f);
    }
	  
  for (i = optind; i < argc; i++)
    {
      FILE *f = fopen(argv[i], "r");

      if (!f)
	{
	  printf("%s: Could not open %s\n", argv[0], argv[i]);
	  perror(argv[0]);
	  exit(-1);
	}

      while (get_line(line, sizeof(line), f))
	{
	  translate_line(o, line);
	}

      fclose(f);
    }

  fprintf(o, "return;\n");
  fprintf(o, "label_%d:\n", label_table_size);
  fprintf(o, "setting_labels = 0;\n");
  fprintf(o, "goto start;\n");
  fprintf(o, "}\n\n\n");

  fprintf(o, 
	  "void init_labels(LBContext *cxt)\n"
	  "{\n");
  output_label_table(o);
  fprintf(o, "}\n\n\n");

  fprintf(o, 
	  "void init_var_table(LBContext *cxt)\n"
	  "{\n");
  output_var_table(o);
  fprintf(o, "}\n\n\n");

  fprintf(o, "#if 0\n");
  output_statement_table(o);
  fprintf(o, "/****************************************************/\n");
  output_function_table(o);
  fprintf(o, "#endif\n");
  fclose(o);

  return 0;
}