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////////////////////////////////////////////////////////////////////////////////
// This source file is part of the ZipArchive library source distribution and
// is Copyrighted 2000 - 2007 by Artpol Software - Tadeusz Dracz
//
// 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 refer to the License.txt file.
//
// Web Site: http://www.artpol-software.com
////////////////////////////////////////////////////////////////////////////////
#include "_features.h"
#if defined ZIP_ARCHIVE_STL || defined ZIP_FILE_USES_STL
#if defined __APPLE__ || defined __CYGWIN__
#define FILE_FUNCTIONS_64B_BY_DEFAULT
#else
#undef FILE_FUNCTIONS_64B_BY_DEFAULT
#endif
#include "stdafx.h"
#include "ZipFile.h"
#include "ZipException.h"
#include "ZipPlatform.h"
#include <fcntl.h>
CZipFile::CZipFile()
{
m_hFile = -1;
}
void CZipFile::ThrowError() const
{
CZipException::Throw(errno, m_szFileName);
}
ZIP_FILE_USIZE CZipFile::GetLength() const
{
// cannot use Seek here, Seek is not const
ZIP_SIZE_TYPE lLen, lCur;
lCur = _lseek(m_hFile, 0, current);
if (lCur == (ZIP_SIZE_TYPE)-1)
ThrowError();
lLen = _lseek(m_hFile, 0, end);
// first go back
bool err = _lseek(m_hFile, lCur, begin) == -1;
if (err || lLen == (ZIP_SIZE_TYPE)-1)
ThrowError();
return lLen;
}
bool CZipFile::Open(LPCTSTR lpszFileName, UINT openFlags, bool bThrow)
{
if (!IsClosed())
Close();
#ifdef O_BINARY
UINT iNewFlags = O_BINARY;
#else
UINT iNewFlags = 0;
#endif
bool bReadOnly = false;
if (openFlags & CZipFile::modeCreate)
iNewFlags |= O_CREAT;
if ((openFlags & CZipFile::modeReadWrite) == CZipFile::modeReadWrite)
iNewFlags |= O_RDWR;
else if (openFlags & CZipFile::modeRead)
{
// O_RDONLY is defined as 0
bReadOnly = true;
iNewFlags |= O_RDONLY;
}
else if (openFlags & CZipFile::modeWrite)
iNewFlags |= O_WRONLY;
if (!(openFlags & CZipFile::modeNoTruncate) && !bReadOnly)
iNewFlags |= O_TRUNC;
m_hFile = ZipPlatform::OpenFile(lpszFileName, iNewFlags, openFlags & 0x1C);
if (m_hFile == -1)
if (bThrow)
CZipException::Throw(errno, lpszFileName);
else
return false;
m_szFileName = lpszFileName;
return true;
}
void CZipFile::SetLength(ULONGLONG uNewLen)
{
ZipPlatform::TruncateFile(m_hFile, uNewLen);
}
ZIP_FILE_USIZE CZipFile::GetPosition() const
{
#ifndef __GNUC__
ZIP_FILE_USIZE ret = _tell(m_hFile);
#else
ZIP_FILE_USIZE ret = lseek(m_hFile, 0, SEEK_CUR);
#endif
if (ret == (ZIP_FILE_USIZE)-1)
ThrowError();
return ret;
}
ZIP_FILE_USIZE CZipFile::Seek(ZIP_FILE_SIZE dOff, int nFrom)
{
// restricted to signed
ZIP_FILE_SIZE ret = (ZIP_FILE_SIZE)_lseek(m_hFile, (long)dOff, nFrom);
if (ret == -1)
ThrowError();
return (ZIP_FILE_USIZE)ret;
}
void CZipFile::Flush()
{
if (!ZipPlatform::FlushFile(m_hFile))
ThrowError();
}
CZipFile::operator HANDLE()
{
intptr_t fh = ZipPlatform::GetFileSystemHandle(m_hFile);
if (fh == -1)
ThrowError();
#if _MSC_VER >= 1300
return (HANDLE)fh;
#else
return (HANDLE)fh;
#endif
}
#endif
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