ncbi_os_mac.cpp

ncbi源码

/*
 * ===========================================================================
 * PRODUCTION $Log: ncbi_os_mac.cpp,v $
 * PRODUCTION Revision 1000.1  2004/06/01 19:08:33  gouriano
 * PRODUCTION PRODUCTION: UPGRADED [GCC34_MSVC7] Dev-tree R1.8
 * PRODUCTION
 * ===========================================================================
 */

/*  $Id: ncbi_os_mac.cpp,v 1000.1 2004/06/01 19:08:33 gouriano Exp $
 * ===========================================================================
 *
 *                            PUBLIC DOMAIN NOTICE
 *               National Center for Biotechnology Information
 *
 *  This software/database is a "United States Government Work" under the
 *  terms of the United States Copyright Act.  It was written as part of
 *  the author's official duties as a United States Government employee and
 *  thus cannot be copyrighted.  This software/database is freely available
 *  to the public for use. The National Library of Medicine and the U.S.
 *  Government have not placed any restriction on its use or reproduction.
 *
 *  Although all reasonable efforts have been taken to ensure the accuracy
 *  and reliability of the software and data, the NLM and the U.S.
 *  Government do not and cannot warrant the performance or results that
 *  may be obtained by using this software or data. The NLM and the U.S.
 *  Government disclaim all warranties, express or implied, including
 *  warranties of performance, merchantability or fitness for any particular
 *  purpose.
 *
 *  Please cite the author in any work or product based on this material.
 *
 * ===========================================================================
 *
 * Authors:  Jim Luther, Joshua Juran, Vlad Lebedev
 *
 * File Description:
 *   Mac specifics
 *
 */

/*
 * NOTICE: Portions of this file have been taken and modified from
 * original sources provided as part of Apple's "MoreFiles" package
 * that carries the following copyright notice:
 *
 *    You may incorporate this sample code into your applications without
 *    restriction, though the sample code has been provided "AS IS" and the
 *    responsibility for its operation is 100% yours.  However, what you are
 *    not permitted to do is to redistribute the source as "DSC Sample Code"
 *    after having made changes. If you're going to re-distribute the source,
 *    we require that you make it clear in the source that the code was
 *    descended from Apple Sample Code, but that you've made changes.
 */


#include <ncbi_pch.hpp>
#include <TextUtils.h>

#include <corelib/ncbi_os_mac.hpp>


extern bool g_Mac_SpecialEnvironment = false;

BEGIN_NCBI_SCOPE


/////////////////////////////////////////////////////////////////////////////
//   COSErrException_Mac
//

static string s_OSErr_ComposeMessage(const OSErr& os_err, const string& what)
{
    string message;
    if ( !what.empty() ) {
        message = what + ": ";
    }

    message += os_err;

    return message;
}


COSErrException_Mac::COSErrException_Mac(const OSErr&  os_err,
                                         const string& what) THROWS_NONE
    : exception(), m_OSErr(os_err)
{
    return;
}


COSErrException_Mac::~COSErrException_Mac(void) THROWS_NONE
{
    return;
}


static	OSErr	GetVolumeInfoNoName(ConstStr255Param pathname,
									short vRefNum,
									HParmBlkPtr pb)
{
	Str255 tempPathname;
	OSErr error;
	
	/* Make sure pb parameter is not NULL */ 
	if ( pb != NULL )
	{
		pb->volumeParam.ioVRefNum = vRefNum;
		if ( pathname == NULL )
		{
			pb->volumeParam.ioNamePtr = NULL;
			pb->volumeParam.ioVolIndex = 0;		/* use ioVRefNum only */
		}
		else
		{
			BlockMoveData(pathname, tempPathname, pathname[0] + 1);	/* make a copy of the string and */
			pb->volumeParam.ioNamePtr = (StringPtr)tempPathname;	/* use the copy so original isn't trashed */
			pb->volumeParam.ioVolIndex = -1;	/* use ioNamePtr/ioVRefNum combination */
		}
		error = PBHGetVInfoSync(pb);
		pb->volumeParam.ioNamePtr = NULL;	/* ioNamePtr may point to local	tempPathname, so don't return it */
	}
	else
	{
		error = paramErr;
	}
	return ( error );
}

static	OSErr GetCatInfoNoName(short vRefNum,
							   long dirID,
							   ConstStr255Param name,
							   CInfoPBPtr pb)
{
	Str31 tempName;
	OSErr error;
	
	/* Protection against File Sharing problem */
	if ( (name == NULL) || (name[0] == 0) )
	{
		tempName[0] = 0;
		pb->dirInfo.ioNamePtr = tempName;
		pb->dirInfo.ioFDirIndex = -1;	/* use ioDirID */
	}
	else
	{
		pb->dirInfo.ioNamePtr = (StringPtr)name;
		pb->dirInfo.ioFDirIndex = 0;	/* use ioNamePtr and ioDirID */
	}
	pb->dirInfo.ioVRefNum = vRefNum;
	pb->dirInfo.ioDrDirID = dirID;
	error = PBGetCatInfoSync(pb);
	pb->dirInfo.ioNamePtr = NULL;
	return ( error );
}

static	OSErr	DetermineVRefNum(ConstStr255Param pathname,
								 short vRefNum,
								 short *realVRefNum)
{
	HParamBlockRec pb;
	OSErr error;

	error = GetVolumeInfoNoName(pathname,vRefNum, &pb);
	if ( error == noErr )
	{
		*realVRefNum = pb.volumeParam.ioVRefNum;
	}
	return ( error );
}

static	OSErr	GetDirectoryID(short vRefNum,
							   long dirID,
							   ConstStr255Param name,
							   long *theDirID,
							   Boolean *isDirectory)
{
	CInfoPBRec pb;
	OSErr error;

	error = GetCatInfoNoName(vRefNum, dirID, name, &pb);
	if ( error == noErr )
	{
		*isDirectory = (pb.hFileInfo.ioFlAttrib & kioFlAttribDirMask) != 0;
		if ( *isDirectory )
		{
			*theDirID = pb.dirInfo.ioDrDirID;
		}
		else
		{
			*theDirID = pb.hFileInfo.ioFlParID;
		}
	}
	
	return ( error );
}

extern	OSErr	FSpGetDirectoryID(const FSSpec *spec,
								  long *theDirID,
								  Boolean *isDirectory)
{
	return ( GetDirectoryID(spec->vRefNum, spec->parID, spec->name,
			 theDirID, isDirectory) );
}

static	OSErr	CheckObjectLock(short vRefNum,
								long dirID,
								ConstStr255Param name)
{
	CInfoPBRec pb;
	OSErr error;
	
	error = GetCatInfoNoName(vRefNum, dirID, name, &pb);
	if ( error == noErr )
	{
		/* check locked bit */
		if ( (pb.hFileInfo.ioFlAttrib & kioFlAttribLockedMask) != 0 )
		{
			error = fLckdErr;
		}
	}
	
	return ( error );
}

/*****************************************************************************/

extern	OSErr	FSpCheckObjectLock(const FSSpec *spec)
{
	return ( CheckObjectLock(spec->vRefNum, spec->parID, spec->name) );
}

static	OSErr	GetFileSize(short vRefNum,
							long dirID,
							ConstStr255Param fileName,
							long *dataSize,
							long *rsrcSize)
{
	HParamBlockRec pb;
	OSErr error;
	
	pb.fileParam.ioNamePtr = (StringPtr)fileName;
	pb.fileParam.ioVRefNum = vRefNum;
	pb.fileParam.ioFVersNum = 0;
	pb.fileParam.ioDirID = dirID;
	pb.fileParam.ioFDirIndex = 0;
	error = PBHGetFInfoSync(&pb);
	if ( error == noErr )
	{
		*dataSize = pb.fileParam.ioFlLgLen;
		*rsrcSize = pb.fileParam.ioFlRLgLen;
	}
	
	return ( error );
}

extern	OSErr	FSpGetFileSize(const FSSpec *spec,
							   long *dataSize,
							   long *rsrcSize)
{
	return ( GetFileSize(spec->vRefNum, spec->parID, spec->name, dataSize, rsrcSize) );
}

extern	OSErr	GetDirItems(short vRefNum,
							long dirID,
							ConstStr255Param name,
							Boolean getFiles,
							Boolean getDirectories,
							FSSpecPtr items,
							short reqItemCount,
							short *actItemCount,
							short *itemIndex) /* start with 1, then use what's returned */
{
	CInfoPBRec pb;
	OSErr error;
	long theDirID;
	Boolean isDirectory;
	FSSpec *endItemsArray;
	
	if ( *itemIndex > 0 )
	{
		/* NOTE: If I could be sure that the caller passed a real vRefNum and real directory */
		/* to this routine, I could rip out calls to DetermineVRefNum and GetDirectoryID and this */
		/* routine would be much faster because of the overhead of DetermineVRefNum and */
		/* GetDirectoryID and because GetDirectoryID blows away the directory index hint the Macintosh */
		/* file system keeps for indexed calls. I can't be sure, so for maximum throughput, */
		/* pass a big array of FSSpecs so you can get the directory's contents with few calls */
		/* to this routine. */
		
		/* get the real volume reference number */
		error = DetermineVRefNum(name, vRefNum, &pb.hFileInfo.ioVRefNum);
		if ( error == noErr )
		{
			/* and the real directory ID of this directory (and make sure it IS a directory) */
			error = GetDirectoryID(vRefNum, dirID, name, &theDirID, &isDirectory);
			if ( error == noErr )
			{
				if ( isDirectory )
				{
					*actItemCount = 0;
					endItemsArray = items + reqItemCount;
					while ( (items < endItemsArray) && (error == noErr) )
					{