src/w32reg.c

   1 /* Emulate the X Resource Manager through the registry.
   2    Copyright (C) 1990, 1993, 1994 Free Software Foundation.
   3
   4 This file is part of GNU Emacs.
   5
   6 GNU Emacs is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Emacs is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Emacs; see the file COPYING.  If not, write to
  18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21 /* Written by Kevin Gallo */
  22
  23 #include <config.h>
  24 #include "lisp.h"
  25 #include "w32term.h"
  26 #include "blockinput.h"
  27
  28 #include <stdio.h>
  29 #include <string.h>
  30
  31 #define REG_ROOT "SOFTWARE\\GNU\\Emacs"
  32
  33 LPBYTE
  34 w32_get_string_resource (name, class, dwexptype)
  35      char *name, *class;
  36      DWORD dwexptype;
  37 {
  38   LPBYTE lpvalue = NULL;
  39   HKEY hrootkey = NULL;
  40   DWORD dwType;
  41   DWORD cbData;
  42   BOOL ok = FALSE;
  43
  44   BLOCK_INPUT;
  45
  46   /* Check both the current user and the local machine to see if we have any resources */
  47
  48   if (RegOpenKeyEx (HKEY_CURRENT_USER, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS
  49       || RegOpenKeyEx (HKEY_LOCAL_MACHINE, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS)
  50     {
  51       char *keyname;
  52
  53       if (RegQueryValueEx (hrootkey, name, NULL, &dwType, NULL, &cbData) == ERROR_SUCCESS
  54           && dwType == dwexptype)
  55         {
  56           keyname = name;
  57         }
  58       else if (RegQueryValueEx (hrootkey, class, NULL, &dwType, NULL, &cbData) == ERROR_SUCCESS
  59                && dwType == dwexptype)
  60         {
  61           keyname = class;
  62         }
  63       else
  64         {
  65           keyname = NULL;
  66         }
  67
  68       ok = (keyname
  69             && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL
  70             && RegQueryValueEx (hrootkey, keyname, NULL, NULL, lpvalue, &cbData) == ERROR_SUCCESS);
  71
  72       RegCloseKey (hrootkey);
  73     }
  74
  75   UNBLOCK_INPUT;
  76
  77   if (!ok)
  78     {
  79       if (lpvalue) xfree (lpvalue);
  80       return (NULL);
  81     }
  82   else
  83     {
  84       return (lpvalue);
  85     }
  86 }
  87
  88 /* Retrieve the string resource specified by NAME with CLASS from
  89    database RDB. */
  90
  91 char *
  92 x_get_string_resource (rdb, name, class)
  93      int rdb;
  94      char *name, *class;
  95 {
  96   return (w32_get_string_resource (name, class, REG_SZ));
  97 }