CMake/Source/kwsys/Registry.cxx

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/*=========================================================================
Program: KWSys - Kitware System Library
Module: $RCSfile$
Copyright (c) Kitware, Inc., Insight Consortium. All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#include "kwsysPrivate.h"
#include KWSYS_HEADER(Registry.hxx)
#include KWSYS_HEADER(Configure.hxx)
#include KWSYS_HEADER(ios/iostream)
#include KWSYS_HEADER(stl/string)
#include KWSYS_HEADER(stl/map)
#include KWSYS_HEADER(ios/iostream)
#include KWSYS_HEADER(ios/fstream)
#include KWSYS_HEADER(ios/sstream)
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// Work-around CMake dependency scanning limitation. This must
// duplicate the above list of headers.
#if 0
# include "Registry.hxx.in"
# include "Configure.hxx.in"
# include "kwsys_stl.hxx.in"
# include "kwsys_stl_string.hxx.in"
# include "kwsys_stl_map.hxx.in"
# include "kwsys_ios_iostream.h.in"
# include "kwsys_ios_fstream.h.in"
# include "kwsys_ios_sstream.h.in"
#endif
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#include <ctype.h> // for isspace
#include <stdio.h>
#ifdef _WIN32
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# include <windows.h>
#endif
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namespace KWSYS_NAMESPACE
{
class RegistryHelper {
public:
RegistryHelper(Registry::RegistryType registryType);
virtual ~RegistryHelper();
// Read a value from the registry.
virtual bool ReadValue(const char *key, const char **value);
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// Delete a key from the registry.
virtual bool DeleteKey(const char *key);
// Delete a value from a given key.
virtual bool DeleteValue(const char *key);
// Set value in a given key.
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virtual bool SetValue(const char *key, const char *value);
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// Open the registry at toplevel/subkey.
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virtual bool Open(const char *toplevel, const char *subkey,
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int readonly);
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// Close the registry.
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virtual bool Close();
// Set the value of changed
void SetChanged(bool b) { m_Changed = b; }
void SetTopLevel(const char* tl);
const char* GetTopLevel() { return m_TopLevel.c_str(); }
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//! Read from local or global scope. On Windows this mean from local machine
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// or local user. On unix this will read from $HOME/.Projectrc or
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// /etc/Project
void SetGlobalScope(bool b);
bool GetGlobalScope();
kwsys_stl::string EncodeKey(const char* str);
kwsys_stl::string EncodeValue(const char* str);
kwsys_stl::string DecodeValue(const char* str);
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protected:
bool m_Changed;
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kwsys_stl::string m_TopLevel;
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bool m_GlobalScope;
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#ifdef _WIN32
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HKEY HKey;
#endif
// Strip trailing and ending spaces.
char *Strip(char *str);
void SetSubKey(const char* sk);
kwsys_stl::string CreateKey(const char *key);
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typedef kwsys_stl::map<kwsys_stl::string, kwsys_stl::string> StringToStringMap;
StringToStringMap EntriesMap;
kwsys_stl::string m_SubKey;
bool m_Empty;
bool m_SubKeySpecified;
kwsys_stl::string m_HomeDirectory;
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Registry::RegistryType m_RegistryType;
};
//----------------------------------------------------------------------------
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#define Registry_BUFFER_SIZE 8192
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//----------------------------------------------------------------------------
Registry::Registry(Registry::RegistryType registryType)
{
m_Opened = false;
m_Locked = false;
this->Helper = 0;
this->Helper = new RegistryHelper(registryType);
}
//----------------------------------------------------------------------------
Registry::~Registry()
{
if ( m_Opened )
{
kwsys_ios::cerr << "Registry::Close should be "
"called here. The registry is not closed."
<< kwsys_ios::endl;
}
delete this->Helper;
}
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//----------------------------------------------------------------------------
void Registry::SetGlobalScope(bool b)
{
this->Helper->SetGlobalScope(b);
}
//----------------------------------------------------------------------------
bool Registry::GetGlobalScope()
{
return this->Helper->GetGlobalScope();
}
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//----------------------------------------------------------------------------
bool Registry::Open(const char *toplevel,
const char *subkey, int readonly)
{
bool res = false;
if ( m_Locked )
{
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return res;
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}
if ( m_Opened )
{
if ( !this->Close() )
{
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return res;
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}
}
if ( !toplevel || !*toplevel )
{
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kwsys_ios::cerr << "Registry::Opened() Toplevel not defined"
<< kwsys_ios::endl;
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return res;
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}
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if ( isspace(toplevel[0]) ||
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isspace(toplevel[strlen(toplevel)-1]) )
{
kwsys_ios::cerr << "Toplevel has to start with letter or number and end"
" with one" << kwsys_ios::endl;
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return res;
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}
res = this->Helper->Open(toplevel, subkey, readonly);
if ( readonly != Registry::READONLY )
{
m_Locked = true;
}
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if ( res )
{
m_Opened = true;
this->Helper->SetTopLevel(toplevel);
}
return res;
}
//----------------------------------------------------------------------------
bool Registry::Close()
{
bool res = false;
if ( m_Opened )
{
res = this->Helper->Close();
}
if ( res )
{
m_Opened = false;
m_Locked = false;
this->Helper->SetChanged(false);
}
return res;
}
//----------------------------------------------------------------------------
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bool Registry::ReadValue(const char *subkey,
const char *key,
const char **value)
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{
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*value = 0;
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bool res = false;
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bool open = false;
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if ( ! value )
{
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return res;
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}
if ( !m_Opened )
{
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if ( !this->Open(this->GetTopLevel(), subkey,
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Registry::READONLY) )
{
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return res;
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}
open = true;
}
res = this->Helper->ReadValue(key, value);
if ( open )
{
if ( !this->Close() )
{
res = false;
}
}
return res;
}
//----------------------------------------------------------------------------
bool Registry::DeleteKey(const char *subkey, const char *key)
{
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bool res = false;
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bool open = false;
if ( !m_Opened )
{
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if ( !this->Open(this->GetTopLevel(), subkey,
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Registry::READWRITE) )
{
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return res;
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}
open = true;
}
res = this->Helper->DeleteKey(key);
if ( res )
{
this->Helper->SetChanged(true);
}
if ( open )
{
if ( !this->Close() )
{
res = false;
}
}
return res;
}
//----------------------------------------------------------------------------
bool Registry::DeleteValue(const char *subkey, const char *key)
{
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bool res = false;
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bool open = false;
if ( !m_Opened )
{
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if ( !this->Open(this->GetTopLevel(), subkey,
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Registry::READWRITE) )
{
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return res;
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}
open = true;
}
res = this->Helper->DeleteValue(key);
if ( res )
{
this->Helper->SetChanged(true);
}
if ( open )
{
if ( !this->Close() )
{
res = false;
}
}
return res;
}
//----------------------------------------------------------------------------
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bool Registry::SetValue(const char *subkey, const char *key,
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const char *value)
{
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bool res = false;
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bool open = false;
if ( !m_Opened )
{
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if ( !this->Open(this->GetTopLevel(), subkey,
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Registry::READWRITE) )
{
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return res;
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}
open = true;
}
res = this->Helper->SetValue( key, value );
if ( res )
{
this->Helper->SetChanged(true);
}
if ( open )
{
if ( !this->Close() )
{
res = false;
}
}
return res;
}
//----------------------------------------------------------------------------
const char* Registry::GetTopLevel()
{
return this->Helper->GetTopLevel();
}
//----------------------------------------------------------------------------
void Registry::SetTopLevel(const char* tl)
{
this->Helper->SetTopLevel(tl);
}
//----------------------------------------------------------------------------
void RegistryHelper::SetTopLevel(const char* tl)
{
if ( tl )
{
m_TopLevel = tl;
}
else
{
m_TopLevel = "";
}
}
//----------------------------------------------------------------------------
RegistryHelper::RegistryHelper(Registry::RegistryType registryType)
{
m_Changed = false;
m_TopLevel = "";
m_SubKey = "";
m_SubKeySpecified = false;
m_Empty = true;
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m_GlobalScope = false;
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m_RegistryType = registryType;
}
//----------------------------------------------------------------------------
RegistryHelper::~RegistryHelper()
{
}
//----------------------------------------------------------------------------
bool RegistryHelper::Open(const char *toplevel, const char *subkey,
int readonly)
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{
this->EntriesMap.clear();
m_Empty = 1;
#ifdef _WIN32
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if ( m_RegistryType == Registry::WIN32_REGISTRY)
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{
HKEY scope = HKEY_CURRENT_USER;
if ( this->GetGlobalScope() )
{
scope = HKEY_LOCAL_MACHINE;
}
int res = 0;
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kwsys_ios::ostringstream str;
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DWORD dwDummy;
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str << "Software\\Kitware\\" << toplevel << "\\" << subkey;
if ( readonly == Registry::READONLY )
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{
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res = ( RegOpenKeyEx(scope, str.str().c_str(),
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0, KEY_READ, &this->HKey) == ERROR_SUCCESS );
}
else
{
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res = ( RegCreateKeyEx(scope, str.str().c_str(),
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0, "", REG_OPTION_NON_VOLATILE, KEY_READ|KEY_WRITE,
NULL, &this->HKey, &dwDummy) == ERROR_SUCCESS );
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}
if ( res != 0 )
{
this->SetSubKey( subkey );
}
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return (res != 0);
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}
#endif
if ( m_RegistryType == Registry::FILE_REGISTRY )
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{
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bool res = false;
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int cc;
kwsys_ios::ostringstream str;
const char* homeDirectory;
if ( (homeDirectory = getenv("HOME")) == 0 )
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{
if ( (homeDirectory = getenv("USERPROFILE")) == 0 )
{
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return false;
}
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}
m_HomeDirectory = homeDirectory;
str << m_HomeDirectory.c_str() << "/." << toplevel << "rc";
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if ( readonly == Registry::READWRITE )
{
kwsys_ios::ofstream ofs( str.str().c_str(), kwsys_ios::ios::out|kwsys_ios::ios::app );
if ( ofs.fail() )
{
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return false;
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}
ofs.close();
}
kwsys_ios::ifstream *ifs = new kwsys_ios::ifstream(str.str().c_str(), kwsys_ios::ios::in
#ifndef KWSYS_IOS_USE_ANSI
| kwsys_ios::ios::nocreate
#endif
);
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if ( !ifs )
{
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return false;
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}
if ( ifs->fail())
{
delete ifs;
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return false;
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}
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res = true;
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char buffer[Registry_BUFFER_SIZE];
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while( !ifs->fail() )
{
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ifs->getline(buffer, Registry_BUFFER_SIZE);
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if ( ifs->fail() || ifs->eof() )
{
break;
}
char *line = this->Strip(buffer);
if ( *line == '#' || *line == 0 )
{
// Comment
continue;
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}
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int linelen = static_cast<int>(strlen(line));
for ( cc = 0; cc < linelen; cc++ )
{
if ( line[cc] == '=' )
{
char *key = new char[ cc+1 ];
strncpy( key, line, cc );
key[cc] = 0;
char *value = line + cc + 1;
char *nkey = this->Strip(key);
char *nvalue = this->Strip(value);
this->EntriesMap[nkey] = this->DecodeValue(nvalue);
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m_Empty = 0;
delete [] key;
break;
}
}
}
ifs->close();
this->SetSubKey( subkey );
delete ifs;
return res;
}
return false;
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}
//----------------------------------------------------------------------------
bool RegistryHelper::Close()
{
#ifdef _WIN32
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if ( m_RegistryType == Registry::WIN32_REGISTRY)
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{
int res;
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res = ( RegCloseKey(this->HKey) == ERROR_SUCCESS );
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return (res != 0);
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}
#endif
if ( m_RegistryType == Registry::FILE_REGISTRY )
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{
if ( !m_Changed )
{
this->SetSubKey(0);
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return true;
}
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kwsys_ios::ostringstream str;
str << m_HomeDirectory.c_str() << "/." << this->GetTopLevel() << "rc";
kwsys_ios::ofstream *ofs = new kwsys_ios::ofstream(str.str().c_str(), kwsys_ios::ios::out);
if ( !ofs )
{
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return false;
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}
if ( ofs->fail())
{
delete ofs;
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return false;
}
*ofs << "# This file is automatically generated by the application" << kwsys_ios::endl
<< "# If you change any lines or add new lines, note that all" << kwsys_ios::endl
<< "# comments and empty lines will be deleted. Every line has" << kwsys_ios::endl
<< "# to be in format: " << kwsys_ios::endl
<< "# key = value" << kwsys_ios::endl
<< "#" << kwsys_ios::endl;
if ( !this->EntriesMap.empty() )
{
RegistryHelper::StringToStringMap::iterator it;
for ( it = this->EntriesMap.begin();
it != this->EntriesMap.end();
++ it )
{
*ofs << it->first.c_str() << " = " << this->EncodeValue(it->second.c_str()).c_str() << kwsys_ios::endl;
}
}
this->EntriesMap.clear();
ofs->close();
delete ofs;
this->SetSubKey(0);
m_Empty = 1;
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return true;
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}
return false;
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}
//----------------------------------------------------------------------------
bool RegistryHelper::ReadValue(const char *skey, const char **value)
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{
#ifdef _WIN32
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if ( m_RegistryType == Registry::WIN32_REGISTRY)
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{
kwsys_stl::string key = this->CreateKey( skey );
if ( key.empty() )
{
return false;
}
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DWORD dwType, dwSize;
dwType = REG_SZ;
char buffer[1024]; // Replace with RegQueryInfoKey
dwSize = sizeof(buffer);
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int res = ( RegQueryValueEx(this->HKey, skey, NULL, &dwType,
(BYTE *)buffer, &dwSize) == ERROR_SUCCESS );
if ( !res )
{
return false;
}
this->EntriesMap[key] = buffer;
RegistryHelper::StringToStringMap::iterator it
= this->EntriesMap.find(key);
*value = it->second.c_str();
return true;
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}
#endif
if ( m_RegistryType == Registry::FILE_REGISTRY )
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{
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bool res = false;
kwsys_stl::string key = this->CreateKey( skey );
if ( key.empty() )
{
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return false;
}
RegistryHelper::StringToStringMap::iterator it
= this->EntriesMap.find(key);
if ( it != this->EntriesMap.end() )
{
*value = it->second.c_str();
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res = true;
}
return res;
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}
return false;
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}
//----------------------------------------------------------------------------
bool RegistryHelper::DeleteKey(const char* skey)
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{
#ifdef _WIN32
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if ( m_RegistryType == Registry::WIN32_REGISTRY)
{
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int res = ( RegDeleteKey( this->HKey, skey ) == ERROR_SUCCESS );
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return (res != 0);
}
#endif
if ( m_RegistryType == Registry::FILE_REGISTRY )
{
kwsys_stl::string key = this->CreateKey( skey );
if ( key.empty() )
{
return false;
}
this->EntriesMap.erase(key);
return true;
}
return false;
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}
//----------------------------------------------------------------------------
bool RegistryHelper::DeleteValue(const char *skey)
{
#ifdef _WIN32
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if ( m_RegistryType == Registry::WIN32_REGISTRY)
{
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int res = ( RegDeleteValue( this->HKey, skey ) == ERROR_SUCCESS );
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return (res != 0);
}
#endif
if ( m_RegistryType == Registry::FILE_REGISTRY )
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{
kwsys_stl::string key = this->CreateKey( skey );
if ( key.empty() )
{
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return false;
}
this->EntriesMap.erase(key);
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return true;
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}
return false;
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}
//----------------------------------------------------------------------------
bool RegistryHelper::SetValue(const char *skey, const char *value)
{
#ifdef _WIN32
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if ( m_RegistryType == Registry::WIN32_REGISTRY)
{
DWORD len = (DWORD)(value ? strlen(value) : 0);
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int res = ( RegSetValueEx(this->HKey, skey, 0, REG_SZ,
(CONST BYTE *)(const char *)value,
len+1) == ERROR_SUCCESS );
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return (res != 0);
}
#endif
if ( m_RegistryType == Registry::FILE_REGISTRY )
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{
kwsys_stl::string key = this->CreateKey( skey );
if ( key.empty() )
{
return 0;
}
this->EntriesMap[key] = value;
return 1;
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}
return false;
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}
//----------------------------------------------------------------------------
kwsys_stl::string RegistryHelper::CreateKey( const char *key )
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{
if ( !m_SubKeySpecified || m_SubKey.empty() || !key )
{
return "";
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}
kwsys_ios::ostringstream ostr;
ostr << this->EncodeKey(this->m_SubKey.c_str()).c_str()
<< "\\" << this->EncodeKey(key).c_str();
return ostr.str();
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}
//----------------------------------------------------------------------------
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void RegistryHelper::SetSubKey(const char* sk)
{
if ( !sk )
{
m_SubKey = "";
m_SubKeySpecified = false;
}
else
{
m_SubKey = sk;
m_SubKeySpecified = true;
}
}
//----------------------------------------------------------------------------
char *RegistryHelper::Strip(char *str)
{
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int cc;
size_t len;
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char *nstr;
if ( !str )
{
return NULL;
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}
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len = strlen(str);
nstr = str;
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for( cc=0; cc < static_cast<int>(len); cc++ )
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{
if ( !isspace( *nstr ) )
{
break;
}
nstr ++;
}
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for( cc= static_cast<int>(strlen(nstr))-1; cc>=0; cc-- )
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{
if ( !isspace( nstr[cc] ) )
{
nstr[cc+1] = 0;
break;
}
}
return nstr;
}
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//----------------------------------------------------------------------------
void RegistryHelper::SetGlobalScope(bool b)
{
m_GlobalScope = b;
}
//----------------------------------------------------------------------------
bool RegistryHelper::GetGlobalScope()
{
return m_GlobalScope;
}
//----------------------------------------------------------------------------
kwsys_stl::string RegistryHelper::EncodeKey(const char* str)
{
kwsys_ios::ostringstream ostr;
while ( *str )
{
switch ( *str )
{
case '%': case '=': case '\n': case '\r': case '\t':
char buffer[4];
sprintf(buffer, "%%%02X", *str);
ostr << buffer;
break;
default:
ostr << *str;
}
str ++;
}
return ostr.str();
}
//----------------------------------------------------------------------------
kwsys_stl::string RegistryHelper::EncodeValue(const char* str)
{
kwsys_ios::ostringstream ostr;
while ( *str )
{
switch ( *str )
{
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case '%': case '=': case '\n': case '\r': case '\t':
char buffer[4];
sprintf(buffer, "%%%02X", *str);
ostr << buffer;
break;
default:
ostr << *str;
}
str ++;
}
return ostr.str();
}
//----------------------------------------------------------------------------
kwsys_stl::string RegistryHelper::DecodeValue(const char* str)
{
kwsys_ios::ostringstream ostr;
while ( *str )
{
unsigned int val;
switch ( *str )
{
case '%':
if ( *(str+1) && *(str+2) && sscanf(str+1, "%x", &val) == 1 )
{
ostr << static_cast<char>(val);
str += 2;
}
else
{
ostr << *str;
}
break;
default:
ostr << *str;
}
str ++;
}
return ostr.str();
}
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} // namespace KWSYS_NAMESPACE