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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#include "unotools/unotoolsdllapi.h"
#ifndef _UNOTOOLS_TEMPFILE_HXX
#define _UNOTOOLS_TEMPFILE_HXX
#include <tools/string.hxx>
#include <tools/stream.hxx>
namespace utl
{
struct TempFile_Impl;
/**
The class TempFile gives access to temporary files in the local file system. Sometimes they are needed because a 3rd party
code has a file name based interface, or some file access has to be done locally without transferring tons of bytes to or
from a remote system.
Creating a UCB content on a TempFile is only possible if a UCP for the local file system is present.
TempFiles can always be accessed by SvFileStreams or Sot/SvStorages using the "physical" file name ( not the URL, because
this may be a non-file URL, see below ), but if a UCB content can be created, it is also possible to take the URL and use
the UCB helper classes for streams. For convenience use UcbStreamHelper.
A Tempfile always has a "physical" file name ( a file name in the local computers host notation ) but it has a
"UCB compatible" URL only if a UCP for the local file system exists. This URL may have its own URL scheme
( not neccessarily "file://" ! ). The TempFile class methods take this into account, but other simple conversions like
the osl functions do not.
So it is a potential error to convert between the filename and the URL of a TempFile object using functions or methods
outside this class.
*/
class UNOTOOLS_DLLPUBLIC TempFile
{
TempFile_Impl* pImp;
sal_Bool bKillingFileEnabled;
protected:
public:
/**
Create a temporary file or directory, in the default tempfile folder or if possible in a given folder.
This given folder ( the "parent" parameter ( if not NULL ) ) must be a "UCB compatible" URL.
The temporary object is created in the local file system, even if there is no UCB that can access it.
If the given folder is part of the local file system, the TempFile is created in this folder.
*/
TempFile( const String* pParent=NULL, sal_Bool bDirectory=sal_False );
/**
Same as above; additionally the name starts with some given characters followed by a counter ( example:
rLeadingChars="abc" means "abc0","abc1" and so on, depending on existing files in the folder ).
The extension string may be f.e. ".txt" or "", if no extension string is given, ".tmp" is used
*/
TempFile( const String& rLeadingChars, const String* pExtension=NULL, const String* pParent=NULL,
sal_Bool bDirectory=sal_False);
/**
Same as above; additionally the name starts with some given characters followed by a counter ( example:
rLeadingChars="abc" means "abc0","abc1" and so on, depending on existing files in the folder ).
The extension string may be f.e. ".txt" or "", if no extension string is given, ".tmp" is used
@param _bStartWithZero If set to false names will be generated like "abc","abc0","abc1"
*/
TempFile( const String& rLeadingChars,sal_Bool _bStartWithZero, const String* pExtension=NULL, const String* pParent=NULL,sal_Bool bDirectory=sal_False);
/**
TempFile will be removed from disk in dtor if EnableKillingTempFile was called before.
Temporary directories will be removed recursively in that case.
*/
~TempFile();
/**
Returns sal_True if it has a valid file name.
*/
sal_Bool IsValid() const;
/**
Returns the "UCB compatible" URL of the tempfile object.
If you want to have the "physical" file name, use the GetFileName() method of this object, because these
method uses the UCB for the conversion, but never use any external conversion functions for URLs into
"physical" names.
If no UCP is available for the local file system, an empty URL is returned. In this case you can't access
the file as a UCB content !
*/
String GetURL() const;
/**
Returns the "physical" name of the tempfile in host notation ( should only be used for 3rd party code
with file name interfaces ).
If you want to have the URL, use the GetURL() method of this object, but never use any external
conversion functions for "physical" names into URLs.
*/
String GetFileName() const;
/**
Returns a stream to the tempfiles data; the stream is owned by the tempfile object, so you have to keep this
alive as long as you want to use the stream. If the TempFile object is destroyed, it also destroys the
stream object, the underlying file is only deleted if EnableKillingFile( sal_True ) has been called before!
*/
SvStream* GetStream( StreamMode eMode );
/**
Let the TempFile object close and destroy the owned stream object if any.
*/
void CloseStream();
/**
If enabled the file will be removed from disk when the dtor is called ( default is not enabled )
*/
void EnableKillingFile( sal_Bool bEnable=sal_True )
{ bKillingFileEnabled = bEnable; }
sal_Bool IsKillingFileEnabled() const
{ return bKillingFileEnabled; }
/**
Only create a "physical" file name for a temporary file that would be valid at that moment.
Should only be used for 3rd party code with a file name interface that wants to create the file by itself.
If you want to convert file name into a URL, always use class LocalFileHelper, but never use any
conversion functions of osl.
*/
static String CreateTempName( const String* pParent=NULL );
};
}
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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