File: nsLocalFileUnix.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * The contents of this file are subject to the Netscape Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/NPL/
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * The Original Code is Mozilla Communicator client code, 
 * released March 31, 1998. 
 *
 * The Initial Developer of the Original Code is Netscape Communications 
 * Corporation.  Portions created by Netscape are
 * Copyright (C) 1998-1999 Netscape Communications Corporation. All
 * Rights Reserved.
 *
 * Contributor(s): 
 *     Mike Shaver <shaver@mozilla.org>
 */

/*
 * Implementation of nsIFile for ``Unixy'' systems.
 */

#ifndef _nsLocalFileUNIX_H_
#define _nsLocalFileUNIX_H_

#include <sys/stat.h>
#include <unistd.h>

#include "nscore.h"
#include "nsString.h"
#include "nsReadableUtils.h"

/** 
 *  we need these for statfs()
 */
#ifdef HAVE_SYS_STATVFS_H
    #if defined(__osf__) && defined(__DECCXX)
        extern "C" int statvfs(const char *, struct statvfs *);
    #endif
    #include <sys/statvfs.h>
#endif

#ifdef HAVE_SYS_STATFS_H
    #include <sys/statfs.h>
#endif

#ifdef HAVE_STATVFS
    #define STATFS statvfs
#else
    #define STATFS statfs
#endif

// so we can statfs on freebsd
#if defined(__FreeBSD__)
    #define HAVE_SYS_STATFS_H
    #define STATFS statfs
    #include <sys/param.h>
    #include <sys/mount.h>
#endif

class NS_COM nsLocalFile : public nsILocalFile
{
public:
    NS_DEFINE_STATIC_CID_ACCESSOR(NS_LOCAL_FILE_CID)
    
    nsLocalFile();

    static NS_METHOD nsLocalFileConstructor(nsISupports* outer, const nsIID& aIID, void* *aInstancePtr);

    // nsISupports
    NS_DECL_ISUPPORTS

    // nsIFile
    NS_DECL_NSIFILE

    // nsILocalFile
    NS_DECL_NSILOCALFILE

public:
    static void GlobalInit();
    static void GlobalShutdown();

private:
    nsLocalFile(const nsLocalFile& other);
    ~nsLocalFile() {}

protected:
    struct stat  mCachedStat;
    nsCString    mPath;
    PRPackedBool mHaveCachedStat;

    void LocateNativeLeafName(nsACString::const_iterator &,
                              nsACString::const_iterator &);

    nsresult CopyDirectoryTo(nsIFile *newParent);
    nsresult CreateAllAncestors(PRUint32 permissions);
    nsresult GetNativeTargetPathName(nsIFile *newParent,
                                     const nsACString &newName,
                                     nsACString &_retval);

    void InvalidateCache() {
        mHaveCachedStat = PR_FALSE;
    }
    nsresult FillStatCache();

    nsresult CreateAndKeepOpen(PRUint32 type, PRIntn flags,
                               PRUint32 permissions, PRFileDesc **_retval);
};

#endif /* _nsLocalFileUNIX_H_ */