zipplatform.h

ZIP压缩、解压缩算法库

////////////////////////////////////////////////////////////////////////////////
// $RCSfile: ZipPlatform.h,v $
// $Revision: 1.3 $
// $Date: 2005/03/07 20:40:37 $ $Author: Tadeusz Dracz $
////////////////////////////////////////////////////////////////////////////////
// This source file is part of the ZipArchive library source distribution and
// is Copyrighted 2000-2005 by Tadeusz Dracz (http://www.artpol-software.com/)
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
// 
// For the licensing details see the file License.txt
////////////////////////////////////////////////////////////////////////////////

/**
* \file ZipPlatform.h
* ZipPlatform namespace declaration.
*
*/
#if !defined(AFX_ZipPlatform_H__E2FE6343_9D03_4F3C_A1F7_706C9F0ED978__INCLUDED_)
#define AFX_ZipPlatform_H__E2FE6343_9D03_4F3C_A1F7_706C9F0ED978__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
class CZipFileHeader;
class CZipAutoBuffer;
#include "ZipString.h"
#include "ZipPathComponent.h"
#include <sys/types.h>
#include "ZipExport.h"

/**
	Interface to the system API.
	All functions have a system - specific implementation .
*/
namespace ZipPlatform
{

	/**
		return the default system case-sensitivity
	*/
	ZIP_API bool GetSystemCaseSensitivity();

	/**
		\return A current system name tag. 
		May be one of ZipCompatibility::ZipPlatforms values.
		\see CZipArchive::GetSystemCompatibility
	*/
	ZIP_API int GetSystemID();

/**
	\return	the default file attributes for the current system
*/
	ZIP_API DWORD GetDefaultAttributes(); 

/**
	\return	the default directory attributes for the current system
*/
	ZIP_API DWORD GetDefaultDirAttributes();

/**
	Get the free space on the device pointed by \e lpszPath
*/
	ZIP_API DWORD GetDeviceFreeSpace(LPCTSTR lpszPath);

/**
	Return the temporary file name ensuring there is enough size in the destination directory,.
	Checking for the size is disabled by default.
*/
	ZIP_API CZipString GetTmpFileName(LPCTSTR lpszPath = NULL, DWORD iSizeNeeded = DWORD(-1));
/**
	\name Various operations on files and directories.
	All the functions which are returning a \c bool value,
	return \c true when the operation was successful.
*/
	//@{
	ZIP_API bool GetCurrentDirectory(CZipString& sz);	///< Get the current directory and store it in \e sz
	ZIP_API bool ChangeDirectory(LPCTSTR lpDirectory);
	ZIP_API bool SetFileAttr(LPCTSTR lpFileName, DWORD uAttr);
	ZIP_API bool GetFileAttr(LPCTSTR lpFileName, DWORD& uAttr);
	ZIP_API bool GetFileModTime(LPCTSTR lpFileName, time_t & ttime); ///< get the file modification time
	ZIP_API bool GetFileSize(LPCTSTR lpszFileName, DWORD& dSize);
	ZIP_API bool SetFileModTime(LPCTSTR lpFileName, time_t ttime);	 ///< set the file modification time
	ZIP_API bool CreateDirectory(LPCTSTR lpDirectory);
	ZIP_API bool SetVolLabel(LPCTSTR lpszPath, LPCTSTR lpszLabel); ///< \c lpszPath may point to a file on the device
	ZIP_API bool ForceDirectory(LPCTSTR lpDirectory);	///< create nested directories at once
	ZIP_API bool RemoveFile(LPCTSTR lpszFileName, bool bThrow = true);
	ZIP_API bool RenameFile( LPCTSTR lpszOldName, LPCTSTR lpszNewName, bool bThrow = true);

#ifndef _MFC_VER
	ZIP_API bool TruncateFile(int iDes, DWORD iSize);
	ZIP_API int OpenFile(LPCTSTR lpszFileName, UINT iMode, int iShareMode);
	ZIP_API bool FlushFile(int iDes);	///< flush the file to the disk.
	ZIP_API int GetFileSystemHandle(int iDes); ///< return the underlying system handle 
#endif
	//@}

/**
	\param	lpszDir
		
	\return	\c true, if \e lpszDir directory exists; otherwise \c false;
*/
	ZIP_API bool DirectoryExists(LPCTSTR lpszDir);
/**
	\param	lpszFilePath
		may point to a file path or a directory on the device
	\return	\c true if the drive is removable. 
	Implemented only on Windows system, in all others always returns \c true.
*/
	ZIP_API bool IsDriveRemovable(LPCTSTR lpszFilePath);
/**
	\param	uAttr
		attributes value to test		
	\return	\c true if the attributes are the directory attributes
*/
	ZIP_API bool IsDirectory(DWORD uAttr);

/**
	Perform the translation between ANSI and OEM character sets.
	\remark
	- The conversion is performed only for the zip archives created under Windows platform.
	- Windows archiving programs convert a filename to OEM before adding it to the archive.
	- OEM conversion only influences the ANSI values above 126, so it
	affects only strings containing international characters.

	\param	buffer
		buffer to be translated		
	\param	bAnsiToOem
		if \c true, convert ANSI to OEM
		if \c false, OEM to ANSI
*/
	ZIP_API void AnsiOem(CZipAutoBuffer& buffer, bool bAnsiToOem);
/**
	Check if the given file or directory exists.
	\param	lpszName
		
	\return	
	- -1 if the given file is a directory
	- 1 a file
	- 0 if there is no such a file
*/
	ZIP_API int FileExists(LPCTSTR lpszName);


#ifdef _UNICODE	
/**
	Convert wide character string to single character string.
	\param	lpWide
		Wide string to convert
	\param	szSingle
		buffer to receive converted string (without the terminating NULL character)
	\param bUseAnsi
		if \c true, CP_ACP code page is used for the conversion, otherwise CP_UTF8 is used
	\return	
		the \e szSingle buffer length, or \c -1 when not succeeded
	\note Only in UNICODE version.
*/
	ZIP_API int WideToSingle(LPCTSTR lpWide, CZipAutoBuffer &szSingle, bool bUseAnsi);
/**
	Convert single character string to wide character string.
	\param	szSingle
		single string to convert (no terminating NULL character at the end)
	\param	szWide
		receives the wide string after the conversion	
	\param bUseAnsi
		if \c true, CP_ACP code page is used for the conversion, otherwise CP_UTF8 is used
	\return	\e the length of the string after the conversion (without the NULL character),
	or \c -1 when not succeeded
	\note Only in UNICODE version.
*/
	ZIP_API int SingleToWide(const CZipAutoBuffer &szSingle, CZipString& szWide, bool bUseAnsi);
#endif
};


#endif // !defined(AFX_ZipPlatform_H__E2FE6343_9D03_4F3C_A1F7_706C9F0ED978__INCLUDED_)