os/ossrv/genericopenlibs/cstdlib/INC/ENVIRON.H
changeset 0 bde4ae8d615e
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/ossrv/genericopenlibs/cstdlib/INC/ENVIRON.H	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,64 @@
     1.4 +// Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).
     1.5 +// All rights reserved.
     1.6 +// This component and the accompanying materials are made available
     1.7 +// under the terms of "Eclipse Public License v1.0"
     1.8 +// which accompanies this distribution, and is available
     1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
    1.10 +//
    1.11 +// Initial Contributors:
    1.12 +// Nokia Corporation - initial contribution.
    1.13 +//
    1.14 +// Contributors:
    1.15 +//
    1.16 +// Description:
    1.17 +// Abstraction for "an environment" holding pairs of C strings (name, value)
    1.18 +// 
    1.19 +//
    1.20 +
    1.21 +#include <e32std.h>
    1.22 +#include <e32base.h>
    1.23 +#include <stddef.h> //for wchar_t
    1.24 +
    1.25 +class CEnvironment;
    1.26 +class TEnvVar
    1.27 +/**
    1.28 +@internalComponent
    1.29 +*/
    1.30 +	{
    1.31 +	friend class CEnvironment;	// who manages my storage
    1.32 +public:
    1.33 +	void Release();
    1.34 +	void ConstructL(const TDesC16& aName, const wchar_t* aValue);
    1.35 +	TInt SetValue(const wchar_t* aValue);
    1.36 +	HBufC16* Match(const TDesC16& aName);
    1.37 +	TUint Length() const;
    1.38 +	const TInt NotEmpty() const { return (TInt)iValue; };
    1.39 +	static TInt Externalize(const wchar_t* aPair, TDes16& aBuffer);
    1.40 +	TInt Externalize(TDes16& aBuffer);
    1.41 +	void ConstructL(const TText16*& aPtr);
    1.42 +private:
    1.43 +	static TPtrC16 ValuePtr(const wchar_t* aValue);
    1.44 +	HBufC16* iName;
    1.45 +	HBufC16* iValue;		// data is zero terminated
    1.46 +	};
    1.47 +
    1.48 +NONSHARABLE_CLASS(CEnvironment) : public CBase
    1.49 +/**
    1.50 +@internalComponent
    1.51 +*/
    1.52 +	{
    1.53 +public:
    1.54 +	CEnvironment() {};
    1.55 +	~CEnvironment();
    1.56 +
    1.57 +	wchar_t* getenv(const wchar_t* aName) const;
    1.58 +	int setenv(const wchar_t* aName, const wchar_t* aValue, int aReplace, int& anErrno);
    1.59 +	void unsetenv(const wchar_t* aName);
    1.60 +
    1.61 +	void ConstructL(TUint aCount, TDes16& aBuffer);
    1.62 +	HBufC16* ExternalizeLC(TUint& aCount);
    1.63 +	HBufC16* ExternalizeLC(TUint& aCount, wchar_t** envp);
    1.64 +private:
    1.65 +	TUint iCount;
    1.66 +	TEnvVar* iVars;
    1.67 +	};