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firebird-mirror/src/jrd/os/win32/config_root.cpp

104 lines
2.6 KiB
C++

/*
* The contents of this file are subject to the Initial
* Developer's Public License Version 1.0 (the "License");
* you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
* http://www.ibphoenix.com/main.nfs?a=ibphoenix&page=ibp_idpl.
*
* Software distributed under the License is distributed AS IS,
* WITHOUT WARRANTY OF ANY KIND, either express or implied.
* See the License for the specific language governing rights
* and limitations under the License.
*
* The Original Code was created by Dmitry Yemanov
* for the Firebird Open Source RDBMS project.
*
* Copyright (c) 2002 Dmitry Yemanov <dimitr@users.sf.net>
* and all contributors signed below.
*
* All Rights Reserved.
* Contributor(s): ______________________________________.
*/
#include "firebird.h"
#include <windows.h>
#include "fb_types.h"
#include "../common/classes/fb_string.h"
#include "../jrd/os/config_root.h"
#include "../utilities/install/registry.h"
typedef Firebird::PathName string;
/******************************************************************************
*
* Platform-specific root locator
*/
namespace {
bool getRootFromRegistry(string& root)
{
HKEY hkey;
if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, REG_KEY_ROOT_INSTANCES,
0, KEY_QUERY_VALUE, &hkey) != ERROR_SUCCESS)
{
return false;
}
DWORD bufsize = MAXPATHLEN;
char buffer[MAXPATHLEN];
DWORD type;
const long RegRC = RegQueryValueEx(hkey, FB_DEFAULT_INSTANCE,
NULL, &type, reinterpret_cast<UCHAR*>(buffer), &bufsize);
RegCloseKey(hkey);
if (RegRC == ERROR_SUCCESS) {
root = buffer;
return true;
}
return false;
}
} // namespace
void ConfigRoot::osConfigRoot()
{
// check the registry first
//#if !defined(EMBEDDED)
#if defined(SUPERCLIENT)
if (getRootFromRegistry(root_dir))
{
addSlash();
return;
}
#endif
// get the pathname of the running executable
string bin_dir;
{
// Given the current semantics of PathName, when "buffer" goes
// out of scope, it's already bitwise copied into bin_dir.
char buffer[MAXPATHLEN];
GetModuleFileName(NULL, buffer, sizeof(buffer));
bin_dir = buffer;
}
// get rid of the filename
int index = bin_dir.rfind(PathUtils::dir_sep);
bin_dir = bin_dir.substr(0, index);
// how should we decide to use bin_dir instead of root_dir? any ideas?
// ???
#if defined(EMBEDDED)
root_dir = bin_dir + PathUtils::dir_sep;
return;
#endif
// go to the parent directory
index = bin_dir.rfind(PathUtils::dir_sep, bin_dir.length());
root_dir = (index ? bin_dir.substr(0, index) : bin_dir) + PathUtils::dir_sep;
}