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/* Functions related to building resource files.

   Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,

   2007, 2008, 2009, 2010 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.  */

#include "config.h"

#include "system.h"

#include "coretypes.h"

#include "tree.h"

#include "java-tree.h"

#include "jcf.h"

#include "diagnostic-core.h"

#include "toplev.h"

#include "output.h"

#include "parse.h"

#include "function.h"

#include "ggc.h"

#include "tree-iterator.h"

#include "cgraph.h"

/* A list of all the resources files.  */

static GTY(()) VEC(tree,gc) *resources;

void

compile_resource_data (const char *name, const char *buffer, int length)

{

  tree rtype, field = NULL_TREE, data_type, rinit, data, decl;

  VEC(constructor_elt,gc) *v = NULL;

  data_type = build_prim_array_type (unsigned_byte_type_node,

                                     strlen (name) + length);

  rtype = make_node (RECORD_TYPE);

  PUSH_FIELD (input_location,

              rtype, field, "name_length", unsigned_int_type_node);

  PUSH_FIELD (input_location,

              rtype, field, "resource_length", unsigned_int_type_node);

  PUSH_FIELD (input_location, rtype, field, "data", data_type);

  FINISH_RECORD (rtype);

  START_RECORD_CONSTRUCTOR (v, rtype);

  PUSH_FIELD_VALUE (v, "name_length",

                    build_int_cst (NULL_TREE, strlen (name)));

  PUSH_FIELD_VALUE (v, "resource_length",

                    build_int_cst (NULL_TREE, length));

  data = build_string (strlen(name) + length, buffer);

  TREE_TYPE (data) = data_type;

  PUSH_FIELD_VALUE (v, "data", data);

  FINISH_RECORD_CONSTRUCTOR (rinit, v, rtype);

  TREE_CONSTANT (rinit) = 1;

  decl = build_decl (input_location,

                     VAR_DECL, java_mangle_resource_name (name), rtype);

  TREE_STATIC (decl) = 1;

  TREE_PUBLIC (decl) = 1;

  java_hide_decl (decl);

  DECL_ARTIFICIAL (decl) = 1;

  DECL_IGNORED_P (decl) = 1;

  TREE_READONLY (decl) = 1;

  TREE_THIS_VOLATILE (decl) = 0;

  DECL_INITIAL (decl) = rinit;

  layout_decl (decl, 0);

  pushdecl (decl);

  rest_of_decl_compilation (decl, global_bindings_p (), 0);

  varpool_finalize_decl (decl);

  VEC_safe_push (tree, gc, resources, decl);

}

void

write_resource_constructor (tree *list_p)

{

  tree decl, t, register_resource_fn;

  unsigned ix;

  if (resources == NULL)

    return;

  t = build_function_type_list (void_type_node, ptr_type_node, NULL);

  t = build_decl (input_location,

                  FUNCTION_DECL, get_identifier ("_Jv_RegisterResource"), t);

  TREE_PUBLIC (t) = 1;

  DECL_EXTERNAL (t) = 1;

  register_resource_fn = t;

  /* Write out entries in the same order in which they were defined.  */

  FOR_EACH_VEC_ELT (tree, resources, ix, decl)

    {

      t = build_fold_addr_expr (decl);

      t = build_call_expr (register_resource_fn, 1, t);

      append_to_statement_list (t, list_p);

    }

}

/* Generate a byte array representing the contents of FILENAME.  The

   array is assigned a unique local symbol.  The array represents a

   compiled Java resource, which is accessed by the runtime using

   NAME.  */

void

compile_resource_file (const char *name, const char *filename)

{

  struct stat stat_buf;

  int fd;

  char *buffer;

  fd = open (filename, O_RDONLY | O_BINARY);

  if (fd < 0)

    {

      perror ("Failed to read resource file");

      return;

    }

  if (fstat (fd, &stat_buf) != 0

      || ! S_ISREG (stat_buf.st_mode))

    {

      perror ("Could not figure length of resource file");

      return;

    }

  buffer = XNEWVEC (char, strlen (name) + stat_buf.st_size);

  strcpy (buffer, name);

  read (fd, buffer + strlen (name), stat_buf.st_size);

  close (fd);

  compile_resource_data (name, buffer, stat_buf.st_size);

}

#include "gt-java-resource.h"