gcc/java/resource.c

   1 /* Functions related to building resource files.
   2    Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
   3    2007, 2008, 2009, 2010 Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.
  20
  21 Java and all Java-based marks are trademarks or registered trademarks
  22 of Sun Microsystems, Inc. in the United States and other countries.
  23 The Free Software Foundation is independent of Sun Microsystems, Inc.  */
  24
  25 #include "config.h"
  26 #include "system.h"
  27 #include "coretypes.h"
  28 #include "tree.h"
  29 #include "java-tree.h"
  30 #include "jcf.h"
  31 #include "diagnostic-core.h"
  32 #include "toplev.h"
  33 #include "parse.h"
  34 #include "function.h"
  35 #include "ggc.h"
  36 #include "tree-iterator.h"
  37 #include "cgraph.h"
  38
  39 /* A list of all the resources files.  */
  40 static GTY(()) VEC(tree,gc) *resources;
  41
  42 void
  43 compile_resource_data (const char *name, const char *buffer, int length)
  44 {
  45   tree rtype, field = NULL_TREE, data_type, rinit, data, decl;
  46   VEC(constructor_elt,gc) *v = NULL;
  47
  48   data_type = build_prim_array_type (unsigned_byte_type_node,
  49                                      strlen (name) + length);
  50   rtype = make_node (RECORD_TYPE);
  51   PUSH_FIELD (input_location,
  52               rtype, field, "name_length", unsigned_int_type_node);
  53   PUSH_FIELD (input_location,
  54               rtype, field, "resource_length", unsigned_int_type_node);
  55   PUSH_FIELD (input_location, rtype, field, "data", data_type);
  56   FINISH_RECORD (rtype);
  57   START_RECORD_CONSTRUCTOR (v, rtype);
  58   PUSH_FIELD_VALUE (v, "name_length",
  59                     build_int_cst (NULL_TREE, strlen (name)));
  60   PUSH_FIELD_VALUE (v, "resource_length",
  61                     build_int_cst (NULL_TREE, length));
  62   data = build_string (strlen(name) + length, buffer);
  63   TREE_TYPE (data) = data_type;
  64   PUSH_FIELD_VALUE (v, "data", data);
  65   FINISH_RECORD_CONSTRUCTOR (rinit, v, rtype);
  66   TREE_CONSTANT (rinit) = 1;
  67
  68   decl = build_decl (input_location,
  69                      VAR_DECL, java_mangle_resource_name (name), rtype);
  70   TREE_STATIC (decl) = 1;
  71   TREE_PUBLIC (decl) = 1;
  72   java_hide_decl (decl);
  73   DECL_ARTIFICIAL (decl) = 1;
  74   DECL_IGNORED_P (decl) = 1;
  75   TREE_READONLY (decl) = 1;
  76   TREE_THIS_VOLATILE (decl) = 0;
  77   DECL_INITIAL (decl) = rinit;
  78   layout_decl (decl, 0);
  79   pushdecl (decl);
  80   rest_of_decl_compilation (decl, global_bindings_p (), 0);
  81   varpool_finalize_decl (decl);
  82
  83   VEC_safe_push (tree, gc, resources, decl);
  84 }
  85
  86 void
  87 write_resource_constructor (tree *list_p)
  88 {
  89   tree decl, t, register_resource_fn;
  90   unsigned ix;
  91
  92   if (resources == NULL)
  93     return;
  94
  95   t = build_function_type_list (void_type_node, ptr_type_node, NULL);
  96   t = build_decl (input_location,
  97                   FUNCTION_DECL, get_identifier ("_Jv_RegisterResource"), t);
  98   TREE_PUBLIC (t) = 1;
  99   DECL_EXTERNAL (t) = 1;
 100   register_resource_fn = t;
 101
 102   /* Write out entries in the same order in which they were defined.  */
 103   FOR_EACH_VEC_ELT (tree, resources, ix, decl)
 104     {
 105       t = build_fold_addr_expr (decl);
 106       t = build_call_expr (register_resource_fn, 1, t);
 107       append_to_statement_list (t, list_p);
 108     }
 109 }
 110
 111 /* Generate a byte array representing the contents of FILENAME.  The
 112    array is assigned a unique local symbol.  The array represents a
 113    compiled Java resource, which is accessed by the runtime using
 114    NAME.  */
 115 void
 116 compile_resource_file (const char *name, const char *filename)
 117 {
 118   struct stat stat_buf;
 119   int fd;
 120   char *buffer;
 121
 122   fd = open (filename, O_RDONLY | O_BINARY);
 123   if (fd < 0)
 124     {
 125       perror ("Failed to read resource file");
 126       return;
 127     }
 128   if (fstat (fd, &stat_buf) != 0
 129       || ! S_ISREG (stat_buf.st_mode))
 130     {
 131       perror ("Could not figure length of resource file");
 132       return;
 133     }
 134   buffer = XNEWVEC (char, strlen (name) + stat_buf.st_size);
 135   strcpy (buffer, name);
 136   read (fd, buffer + strlen (name), stat_buf.st_size);
 137   close (fd);
 138
 139   compile_resource_data (name, buffer, stat_buf.st_size);
 140 }
 141
 142 #include "gt-java-resource.h"