filespec_carbon.cpp

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/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: filespec_carbon.cpp,v 1.5.32.3 2004/07/09 01:44:13 hubbe Exp $
 * 
 * Portions Copyright (c) 1995-2004 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 (the "RPSL") available at
 * http://www.helixcommunity.org/content/rpsl unless you have licensed
 * the file under the current version of the RealNetworks Community
 * Source License (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.
 * 
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU General Public License Version 2 or later (the
 * "GPL") in which case the provisions of the GPL are applicable
 * instead of those above. If you wish to allow use of your version of
 * this file only under the terms of the GPL, and not to allow others
 * to use your version of this file under the terms of either the RPSL
 * or RCSL, indicate your decision by deleting the provisions above
 * and replace them with the notice and other provisions required by
 * the GPL. If you do not delete the provisions above, a recipient may
 * use your version of this file under the terms of any one of the
 * RPSL, the RCSL or the GPL.
 * 
 * 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 ***** */

#include "filespec.h"

#include "hxstring.h"
#include "platform/mac/fullpathname.h"

#ifndef _MAC_UNIX
#include "platform/mac/maclibrary.h"		// for ResolveIndependentPath
#endif

#include "platform/mac/hx_moreprocesses.h"	// for GetCurrentAppSpec

#include "platform/mac/cfwrappers.h"
#include "platform/mac/MoreFilesX.h"

#define kExtensionSeparator '.'

inline CFStringEncoding GetStandardPathEncodingForOS()
{
	// Mach-O path elements are always UTF 8; CFM path elements we
	// system double-byte encoded
#ifdef _MAC_CFM
	return CFStringGetSystemEncoding();
#else
	return kCFStringEncodingUTF8;
#endif

}


// ------------------------------------------------------------------------------------
//
// CHXMacInternalSpec
//
// ------------------------------------------------------------------------------------
CHXMacInternalSpec::CHXMacInternalSpec()
{
	InitSpec();
	ClearSpec();
}
// ------------------------------------------------------------------------------------
CHXMacInternalSpec::CHXMacInternalSpec(const FSRef& ref)
{
	InitSpec();
	
	(void) SetFromFSRef(ref);
}
// ------------------------------------------------------------------------------------
CHXMacInternalSpec::CHXMacInternalSpec(const FSSpec& spec)
{
	InitSpec();

	(void) SetFromFSSpec(spec);
}
// ------------------------------------------------------------------------------------
CHXMacInternalSpec::CHXMacInternalSpec(AliasHandle alias)
{
	InitSpec();

	(void) SetFromAlias(alias);
}
// ------------------------------------------------------------------------------------
CHXMacInternalSpec::CHXMacInternalSpec(const char* psz)
{
	InitSpec();
	
	(void) SetFromPath(psz);
	
}
// ------------------------------------------------------------------------------------
CHXMacInternalSpec::~CHXMacInternalSpec()
{
	ClearSpec();
}
// ------------------------------------------------------------------------------------
void CHXMacInternalSpec::InitSpec()
{
	mParentAndLeaf.mpLeafName = NULL;
	
}
// ------------------------------------------------------------------------------------
void CHXMacInternalSpec::ClearSpec()
{
	ZeroInit(&mItemRef);
	HX_DELETE(mParentAndLeaf.mpLeafName);
	mbRefSet = false;
	mbParentAndLeafSet = false;
}
// ------------------------------------------------------------------------------------
HX_RESULT CHXMacInternalSpec::AllocateLeafName()
{
	if (mParentAndLeaf.mpLeafName == NULL)
	{
		mParentAndLeaf.mpLeafName = new HFSUniStr255;
		check_nonnull(mParentAndLeaf.mpLeafName);
	}
	
	if (mParentAndLeaf.mpLeafName)
	{
		ZeroInit(mParentAndLeaf.mpLeafName);
		return HXR_OK;
	}
	
	return HXR_FAIL;
}
// ------------------------------------------------------------------------------------
OSErr CHXMacInternalSpec::SetFromFSRef(const FSRef& ref)
{
	OSErr err;
	
	ClearSpec();

	err = FSRefValid(&ref) ? noErr : paramErr;
	check_noerr(err);
	
	if (err == noErr)
	{
		mItemRef = ref;
		mbRefSet = true;
	}
	
	UpdateDebugOnlyPath();
	
	return err;
}
// ------------------------------------------------------------------------------------
OSErr CHXMacInternalSpec::SetFromPath(const char *pszPath)
{
#ifdef _MAC_CFM
	return SetFromHFSPath(pszPath);
#else
	return SetFromPOSIXPath(pszPath);
#endif
}
// ------------------------------------------------------------------------------------
HX_RESULT CHXMacInternalSpec::SetFromHFSPath(const char *pszPath)
{
	OSErr err;
	
	ClearSpec();
	
	if (pszPath && strlen(pszPath)) 
	{		
		FSRef ref;
		
		err = FSRefFromHFSPath(pszPath, &ref);
		if (err == noErr)
		{
			err = SetFromFSRef(ref);
		}
		
		if (err != noErr)
		{
			// we couldn't set it that way; try to make
			// an FSRef for the portion excluding the leaf name
			CHXString strPath, strParent, strLeaf;
			
			(void) FullFromPartialHFSPath(pszPath, strPath);

			SplitPath((const char *) strPath, ':', strParent, strLeaf);
			
			if (strParent.IsEmpty())
			{
				// there's only a leaf; we can't deal with it since we can't
				// make an FSRef for it
				err = paramErr;
			}
			else
			{
				err = FSRefFromHFSPath((const char *) strParent, &ref);
				if (err == noErr)
				{
					err = SetFromParentAndLeaf(ref, (const char *) strLeaf,
								CFStringGetSystemEncoding());
				}
			}
			
			
		}

	}
	else
	{
		err = paramErr;
	}

	UpdateDebugOnlyPath();	// for debugging

	return err;

}

// ------------------------------------------------------------------------------------
OSErr CHXMacInternalSpec::SetFromParentAndLeaf(const FSRef& parentRef, const char * pszName,
											 CFStringEncoding encoding)
{
	HFSUniStr255 leafName;
	OSErr err;
	CHXCFString cfs(pszName, encoding);

	ClearSpec();
	
	if (cfs.IsSet())
	{
		leafName = cfs;
		
		err = SetFromParentAndLeafHFSUni(parentRef, leafName);
	}
	else
	{
		err = paramErr;
	}
	
	return err;

}
// ------------------------------------------------------------------------------------
OSErr CHXMacInternalSpec::SetFromParentAndLeafHFSUni(const FSRef& parentRef, const HFSUniStr255& leafName)
{
	OSErr err;
	
	ClearSpec();
	
	// try to make a valid ref directly
	
	err = FSMakeFSRefUnicode(&parentRef, leafName.length, leafName.unicode, kTextEncodingUnknown,
		&mItemRef);
	if (err == noErr)
	{
		// we have a good ref
		mbRefSet = true;
	}
	else
	{
		// we can't make a good direct ref, so be sure the parent ref is valid
		// and store the leaf name
		
		if (FSRefValid(&parentRef) && SUCCEEDED(AllocateLeafName()))
		{
			mParentAndLeaf.mItemParentRef = parentRef;
			*mParentAndLeaf.mpLeafName = leafName;
			
			mbParentAndLeafSet = true;
			
			err = noErr;
		}
		else
		{
			check(!"Cannot set from parent and leaf");
		}
	}
	
	UpdateDebugOnlyPath();

	return err;
}
// ------------------------------------------------------------------------------------
OSErr CHXMacInternalSpec::SetFromFSSpec(const FSSpec& spec)
{
	OSErr err;
	
	ClearSpec();
	
	if (spec.vRefNum != 0)
	{
		err = FSpMakeFSRef(&spec, &mItemRef);
		
		if (err == noErr)
		{
			// the item exists and we have a good ref