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//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
//
// copyright : (C) 2008 by Eran Ifrah
// file name : environmentconfig.h
//
// -------------------------------------------------------------------------
// A
// _____ _ _ _ _
// / __ \ | | | | (_) |
// | / \/ ___ __| | ___| | _| |_ ___
// | | / _ \ / _ |/ _ \ | | | __/ _ )
// | \__/\ (_) | (_| | __/ |___| | || __/
// \____/\___/ \__,_|\___\_____/_|\__\___|
//
// F i l e
//
// This program 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 2 of the License, or
// (at your option) any later version.
//
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
#ifndef __environmentconfig__
#define __environmentconfig__
#include "configurationtoolbase.h"
#include "archive.h"
#include "evnvarlist.h"
#include <wx/utils.h>
#include "macros.h"
#include <wx/thread.h>
class EnvSetter;
/// A helper class that makes sure that escpaed $ signs
/// are kept unharmed
class WXDLLIMPEXP_SDK DollarEscaper
{
wxString &m_str;
public:
DollarEscaper(wxString &str) ;
~DollarEscaper() ;
};
class WXDLLIMPEXP_SDK EnvironmentConfig : public ConfigurationToolBase
{
// Allow access to Apply/UnApply Env
friend class EnvSetter;
wxStringMap_t m_envSnapshot;
wxCriticalSection m_cs;
int m_envApplied;
protected:
wxString DoExpandVariables(const wxString &in);
void ApplyEnv(wxStringMap_t *overrideMap, const wxString &project);
void UnApplyEnv();
public:
static EnvironmentConfig* Instance();
static void Release();
bool Load();
wxString ExpandVariables(const wxString &in, bool applyEnvironment);
EvnVarList GetSettings();
void SetSettings(EvnVarList &vars);
/**
* @brief return a list of the environment variabels as defined by the user
* in the global environment table + workspace + project (this function only return the names of the variable, not its value)
*/
wxArrayString GetActiveSetEnvNames(bool includeWorkspace = true, const wxString &project = wxEmptyString);
private:
EnvironmentConfig();
virtual ~EnvironmentConfig();
public:
virtual wxString GetRootName();
};
class EnvSetter
{
EnvironmentConfig *m_env;
wxString m_envName;
wxString m_oldEnvValue;
bool m_restoreOldValue;
public:
EnvSetter(wxStringMap_t *om = NULL)
: m_env(EnvironmentConfig::Instance())
, m_restoreOldValue(false)
{
m_env->ApplyEnv(om, wxEmptyString);
}
EnvSetter(EnvironmentConfig *conf, wxStringMap_t *om = NULL)
: m_env(EnvironmentConfig::Instance())
, m_restoreOldValue(false)
{
wxUnusedVar(conf);
m_env->ApplyEnv(om, wxEmptyString);
}
EnvSetter(EnvironmentConfig *conf, wxStringMap_t *om, const wxString &project)
: m_env(EnvironmentConfig::Instance())
, m_restoreOldValue(false)
{
wxUnusedVar(conf);
m_env->ApplyEnv(om, project);
}
EnvSetter(const wxString &var, const wxString &value)
: m_env(NULL)
{
m_envName = var;
// keep old value
m_restoreOldValue = ::wxGetEnv(m_envName, &m_oldEnvValue);
::wxSetEnv(m_envName, value);
}
~EnvSetter() {
if (m_env) {
m_env->UnApplyEnv();
m_env = NULL;
}
if ( m_restoreOldValue ) {
// restore old env variable value
::wxSetEnv(m_envName, m_oldEnvValue);
} else if ( !m_envName.IsEmpty() ) {
// we applied a single evn variable without old value
// uset it
::wxUnsetEnv( m_envName );
}
}
};
#endif // __environmentconfig__
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