cfwrappers.h
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- //
- // Core Foundation wrappers
- //
- // These wrappers primarily exist to ensure that the types get disposed
- //
- // They can in most instances be dropped directly into Core Foundation
- // toolbox calls. Because of that, they have few methods themselves.
- //
- // BIG WARNING: These will RELEASE the native CF object of the same type
- // assigned to them. So don't assign a CFString to a CHXCFString or
- // a CFURL to a CHXCFURL unless it should be released
- // when the wrapper object is disposed.
- //
- // This means that a CFObject returned by a "..Copy.." CF routine can
- // be assigned to these wrappers, but a CFObject returned by a "..Get.."
- // CF routine should NOT be assigned to these (unleass an extra CFRetain
- // is called on the object.)
- //
- // A additional retain is done when assigning CHXCFString to a CHXCFString
- // or a CHXCFURL to a CHXCFURL since both objects will release the
- // underlying ref on destruction.
- #pragma once
- #ifndef _CARBON
- #ifndef _MAC_UNIX
- #error Carbon-only header
- #endif
- #endif
- #ifndef _MAC_MACHO
- #include <CFString.h>
- #endif
- #include "hxstring.h"
- #include "hxtypes.h"
- class CHXCFString
- {
- public:
- CHXCFString(void);
- CHXCFString(CFStringRef cfs); // doesn't do an additional retain
- CHXCFString(const CHXCFString& cfs); // does do an additional retain
- CHXCFString(const CHXString &str); // makes an immutable string
- CHXCFString(const char *pCString); // makes an immutable string
- CHXCFString(const char *pCString, CFStringEncoding encoding); // makes an immutable string
- CHXCFString(ConstStr255Param pPString);
- CHXCFString(const UInt16* pUniChars, INT32 numChars);
- CHXCFString(CFURLRef urlRef);
- CHXCFString(const HFSUniStr255& hfsUni);
- ~CHXCFString();
- operator CFStringRef() const { return mCFStringRef; }
- operator HFSUniStr255() const;
- Boolean IsSet() const { return (mCFStringRef != NULL); }
- const CHXCFString& operator =(CFStringRef cfs); // NB: just frees the old one and copies the ref, doesn't do an additional retain
- const CHXCFString& operator =(const CHXCFString& cfs); // this one does add a retain to the string
- const CHXCFString& operator =(const char *pString);
- const CHXCFString& operator =(const CHXString& str);
- const CHXCFString& operator =(CFURLRef urlRef);
- const CHXCFString& operator =(const HFSUniStr255& hfsUni);
- private:
- // There is no (const char *) operator defined for return strings since
- // we don't want to manage memory with this little wrapper class; assign
- // to a CHXString instead
-
- CFStringRef mCFStringRef;
-
- inline void ReleaseCFString();
- void SetToCFURL(CFURLRef cfURL);
-
- #ifdef _DEBUG
- // these enable us to see the internals of the CFString during debugging
- void UpdateDebugOnlyString(void);
- const char *pStrDebugOnlyPeek;
- CHXString mStrDebugOnly;
- #else
- inline void UpdateDebugOnlyString(void) {};
- #endif
- };
- class CHXCFURL
- {
- public:
- CHXCFURL(void);
- CHXCFURL(const char *pCString);
- CHXCFURL(const CHXString& str);
- CHXCFURL(const FSRef& fsRef);
- CHXCFURL(const FSRef* fsRef);
- CHXCFURL(CFURLRef urlRef);
- ~CHXCFURL();
- operator CFURLRef() const { return mCFURLRef; }
- Boolean IsSet() const { return (mCFURLRef != NULL); }
- const CHXCFURL& operator =(CFURLRef cfs); // NB: just copies the ref, doesn't do an additional retain
- const CHXCFURL& operator =(const CHXCFURL& cfs); // does do an additional retain
-
- const CHXCFURL& operator =(const CHXString& str);
- const CHXCFURL& operator =(const char *pString);
- const CHXCFURL& operator =(const FSRef& fsRef);
- const CHXCFURL& operator =(const FSRef* fsRef);
-
- private:
- CFURLRef mCFURLRef;
-
- void SetToString(const char *pCString);
- void SetToFSRef(const FSRef& fsRef);
- inline void ReleaseCFURL();
- #ifdef _DEBUG
- // these enable us to see the internals of the CFURL during debugging
- void UpdateDebugOnlyString();
- const char *pStrDebugOnlyPeek;
- CHXString mStrDebugOnly;
- #else
- inline void UpdateDebugOnlyString() {};
- #endif
- };