panda3d/dtool/src/dtoolutil/executionEnvironment.h
2005-02-23 20:50:09 +00:00

93 lines
2.8 KiB
C++

// Filename: executionEnvironment.h
// Created by: drose (15May00)
//
////////////////////////////////////////////////////////////////////
//
// PANDA 3D SOFTWARE
// Copyright (c) 2001 - 2004, Disney Enterprises, Inc. All rights reserved
//
// All use of this software is subject to the terms of the Panda 3d
// Software license. You should have received a copy of this license
// along with this source code; you will also find a current copy of
// the license at http://etc.cmu.edu/panda3d/docs/license/ .
//
// To contact the maintainers of this program write to
// panda3d-general@lists.sourceforge.net .
//
////////////////////////////////////////////////////////////////////
#ifndef EXECUTIONENVIRONMENT_H
#define EXECUTIONENVIRONMENT_H
#include "dtoolbase.h"
#include "vector_string.h"
#include "filename.h"
#include <map>
////////////////////////////////////////////////////////////////////
// Class : ExecutionEnvironment
// Description : Encapsulates access to the environment variables and
// command-line arguments at the time of execution.
// This is encapsulated to support accessing these
// things during static init time, which seems to be
// risky at best.
////////////////////////////////////////////////////////////////////
class EXPCL_DTOOL ExecutionEnvironment {
private:
ExecutionEnvironment();
public:
INLINE static bool has_environment_variable(const string &var);
INLINE static string get_environment_variable(const string &var);
INLINE static void set_environment_variable(const string &var, const string &value);
INLINE static void shadow_environment_variable(const string &var, const string &value);
INLINE static void clear_shadow(const string &var);
static string expand_string(const string &str);
INLINE static int get_num_args();
INLINE static string get_arg(int n);
INLINE static string get_binary_name();
INLINE static string get_dtool_name();
static Filename get_cwd();
private:
bool ns_has_environment_variable(const string &var) const;
string ns_get_environment_variable(const string &var) const;
void ns_set_environment_variable(const string &var, const string &value);
void ns_shadow_environment_variable(const string &var, const string &value);
void ns_clear_shadow(const string &var);
int ns_get_num_args() const;
string ns_get_arg(int n) const;
string ns_get_binary_name() const;
string ns_get_dtool_name() const;
static ExecutionEnvironment *get_ptr();
void read_environment_variables();
void read_args();
private:
typedef map<string, string> EnvironmentVariables;
EnvironmentVariables _variables;
typedef vector_string CommandArguments;
CommandArguments _args;
string _binary_name;
string _dtool_name;
static ExecutionEnvironment *_global_ptr;
};
#include "executionEnvironment.I"
#endif