/*
 * Copyright (c) 1995 Gunther Schadow.  All rights reserved.
 *
 * This program 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.
 * 
 * This program 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include "t2c.h"
#include <string.h>
#include <fstream.h>

void
output_interface(const char *owner, char *name, const char* type,
		 const struct decl_rec *decl)
{
  resetnames();

  char filename[strlen(name) + sizeof(".h") + 1];
  strcpy(filename, classname(name));
  strcat(filename, ".h");
  fstream out(filename, ios::out);

  out
    << "/*" << endl
    << " * This file was generated by t2c. Copyright (c) 1995 Gunther Schadow."
      << endl
    << " *" << endl
    << " * " << owner << "." << name << " (" << type << ")" << endl
    << " */" << endl
    << endl
    << "#ifndef " << macroname(name) << "_H_" << endl
    << "#define " << macroname(name) << "_H_" << endl
    << endl
    << "#include <Table.h>" << endl
    << "#include <OraDate.h>" << endl
    << "#include <string.h>" << endl
    << endl
    << "class " << classname(name) << " : public Table" << endl
    << "{" << endl
    << " public:" << endl;

  const struct decl_rec *p;

  /*
   * sizes
   */

  for(p = decl; p != NULL; p = p->next)
    if(p->size) out
      << "  const size_t S_" << p->name << " = " << p->size << ";" << endl;
  
  out
    << endl;
  
  /*
   * set_...() methods
   */

  for(p = decl; p != NULL; p = p->next)
    {
      out
	<< "  void set_" << p->name << "(" << p->type->c_type;

      if(p->size)
	if(strcmp(p->type->c_type, "char") == 0)
	  {
	    out
	      << " *" << "x);" << endl;
	  }
	else
	  {
	    cerr << "sorry, not implemented: arrays of non-chars" << endl;
	    exit(1);
	  }
      else
	out
	  << " x);" << endl;
    }

  out
    << endl;
      
  /*
   * get_...() methods
   */

  for(p = decl; p != NULL; p = p->next)
    {
      out
	<< "  " << p->type->c_type << ' ';
      if(p->size) out
	<< '*';
      out
	<< "get_" << p->name << "();" << endl;
    }

  out
    << endl;
      
  /*
   * unset_...() methods
   */
  
  out
    << "  void unset();  // unset everything" << endl;

  for(p = decl; p != NULL; p = p->next)
    {
      out
	<< "  void unset_" << p->name << "();" << endl;
    }

  out
    << endl;
      
  /*
   * ..._is_null() methods
   */

  for(p = decl; p != NULL; p = p->next)
    {
      out
	<< "  bool " << p->name << "_is_null();" << endl;
    }

  out
    << endl
    << "  " << classname(name) << "();" << endl
    << "  void        insert();" << endl
    << "  result      retrieve(const char *clause = \"\");" << endl
    << "  result      next();" << endl
    << "  void        update();" << endl
    << "  void        update(const char *clause);" << endl
    << "  void        remove();" << endl
    << "  static void remove(const char *clause);" << endl
    << "  static void create();" << endl
    << "  static void drop(TabType t = table);" << endl
    << "  static const char *owner(const char *);" << endl
    << "  static const char *owner();" << endl
    << endl
    << " private:" << endl;

  /*
   * values
   */

  for(p = decl; p != NULL; p = p->next)
    {
      out
	<< "  " << p->type->c_type << " V_" << p->name;
      if(p->size) out
	<< "[S_" << p->name << " + 1]";	  
      out
	<< ";" << endl;
    }
      
  out
    << endl;

  /* indicators
   */

  for(p = decl; p != NULL; p = p->next) out
    << "  short I_" << p->name << ";" << endl;

  out
    << endl
    << "  static const char  select_cmd[];" << endl
    << "  static const char  insert_cmd[];" << endl
    << "  static const char  update_cmd[];" << endl
    << "  static const char  create_cmd[];" << endl
    << "  static const char *the_owner;" << endl
    << "  static TabType     the_type;" << endl
    << "};" << endl
    << endl
    << "#ifndef OUTLINE" << endl
    << "# include \"" << classname(name) << ".icc\"" << endl
    << "#endif" << endl
    << endl
    << "#endif /* ! " << macroname(name) << "_H_ */" << endl;
}