Main Page | Namespace List | Class Hierarchy | Alphabetical List | Class List | File List | Namespace Members | Class Members | File Members | Related Pages | Search for 

ACE_Env_Value< T > Class Template Reference

Environment Variable Value. More...

#include <Env_Value_T.h>

Collaboration diagram for ACE_Env_Value< T >:

Collaboration graph
[legend]
List of all members.

Public Member Functions

 ACE_Env_Value (void)
 ACE_Env_Value (const ACE_TCHAR *varname, const T &vardefault)
 Constructor that calls .

 ~ACE_Env_Value (void)
 Destroy the value.

 operator T (void)
 Returns the value as type T.

void open (const ACE_TCHAR *varname, const T &defval)
const ACE_TCHAR * varname (void) const
 Returns the name of the variable being tracked.


Private Member Functions

 ACE_Env_Value (const ACE_Env_Value< T > &)
 Disallow copying and assignment.

ACE_Env_Value< T > operator= (const ACE_Env_Value< T > &)
void fetch_value (void)

Private Attributes

const ACE_TCHAR * varname_
T value_

Detailed Description

template<class T>
class ACE_Env_Value< T >

Environment Variable Value.

Reads a variable from the user environment, providing a default value.

Definition at line 41 of file Env_Value_T.h.

Constructor & Destructor Documentation

template<class T>
ACE_INLINE ACE_Env_Value< T >::ACE_Env_Value (  void   ) 
 

Default constructor which isn't bound to a specific environment variable name or a default value. Before being useful it must 'd.

Definition at line 12 of file Env_Value_T.inl. 

00013   : varname_ (0)
00014 {
00015 }

template<class T>
ACE_INLINE ACE_Env_Value< T >::ACE_Env_Value (  const ACE_TCHAR *  varname,
const T &  vardefault
) 
 

Constructor that calls .

Definition at line 18 of file Env_Value_T.inl.

References ACE_TCHAR, and ACE_Env_Value< T >::fetch_value(). 

00020   : varname_ (varname),
00021     value_(defval)
00022 {
00023   this->fetch_value ();
00024 }

template<class T>
ACE_INLINE ACE_Env_Value< T >::~ACE_Env_Value (  void   ) 
 

Destroy the value.

Definition at line 56 of file Env_Value_T.inl. 

00057 {
00058 }

template<class T>
ACE_Env_Value< T >::ACE_Env_Value (  const ACE_Env_Value< T > &   )  [private]
 

Disallow copying and assignment.

Member Function Documentation

template<class T>
ACE_INLINE void ACE_Env_Value< T >::fetch_value (  void   )  [private]
 

Definition at line 36 of file Env_Value_T.inl.

References ACE_Convert(), ACE_TCHAR, ACE_TEXT_ALWAYS_CHAR, ACE_TEXT_CHAR_TO_TCHAR, and ACE_OS::getenv().

Referenced by ACE_Env_Value< T >::ACE_Env_Value(), and ACE_Env_Value< T >::open(). 

00037 {
00038 #if defined (ACE_WIN32)
00039   const ACE_TCHAR *env = ACE_OS::getenv (this->varname_);
00040   if (env != 0)
00041     ACE_Convert (env, value_);
00042 #else
00043   char *nenv = ACE_OS::getenv (ACE_TEXT_ALWAYS_CHAR (this->varname_));
00044   if (nenv != 0)
00045     ACE_Convert (ACE_TEXT_CHAR_TO_TCHAR (nenv), this->value_);
00046 #endif
00047 }

template<class T>
ACE_INLINE void ACE_Env_Value< T >::open (  const ACE_TCHAR *  varname,
const T &  defval
) 
 

The constructor, read varname from the environment, using defval as its value if it is not defined.

Definition at line 27 of file Env_Value_T.inl.

References ACE_TCHAR, ACE_Env_Value< T >::fetch_value(), and ACE_Env_Value< T >::varname_. 

00029 {
00030   this->varname_ = varname;
00031   this->value_ = defval;
00032   this->fetch_value ();
00033 }

template<class T>
ACE_BEGIN_VERSIONED_NAMESPACE_DECL ACE_INLINE ACE_Env_Value< T >::operator T (  void   ) 
 

Returns the value as type T.

Definition at line 6 of file Env_Value_T.inl. 

00007 {
00008   return value_;
00009 }

template<class T>
ACE_Env_Value<T> ACE_Env_Value< T >::operator= (  const ACE_Env_Value< T > &   )  [private]
 

template<class T>
ACE_INLINE const ACE_TCHAR * ACE_Env_Value< T >::varname (  void   )  const
 

Returns the name of the variable being tracked.

Definition at line 50 of file Env_Value_T.inl.

References ACE_Env_Value< T >::varname_. 

00051 {
00052   return this->varname_;
00053 }

Member Data Documentation

template<class T>
T ACE_Env_Value< T >::value_ [private]
 

Definition at line 76 of file Env_Value_T.h.

template<class T>
const ACE_TCHAR* ACE_Env_Value< T >::varname_ [private]
 

Definition at line 75 of file Env_Value_T.h.

Referenced by ACE_Env_Value< T >::open(), and ACE_Env_Value< T >::varname().

The documentation for this class was generated from the following files:
Generated on Thu Nov 9 11:22:01 2006 for ACE by doxygen 1.3.6