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/*
* Copyright (c) 2002 Frodo
* Portions Copyright (c) by the authors of ffmpeg and xvid
* Copyright (C) 2002-2013 Team XBMC
* http://xbmc.org
*
* 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, or (at your option)
* any later version.
*
* This Program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with XBMC; see the file COPYING. If not, see
* <http://www.gnu.org/licenses/>.
*
*/
#include "ISOFile.h"
#include "URL.h"
#include "iso9660.h"
#include <algorithm>
#include <sys/stat.h>
using namespace XFILE;
//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
//*********************************************************************************************
CISOFile::CISOFile()
: m_bOpened(false)
, m_hFile(INVALID_HANDLE_VALUE)
{
}
//*********************************************************************************************
CISOFile::~CISOFile()
{
if (m_bOpened)
{
Close();
}
}
//*********************************************************************************************
bool CISOFile::Open(const CURL& url)
{
std::string strFName = "\\";
strFName += url.GetFileName();
for (int i = 0; i < (int)strFName.size(); ++i )
{
if (strFName[i] == '/') strFName[i] = '\\';
}
m_hFile = m_isoReader.OpenFile((char*)strFName.c_str());
if (m_hFile == INVALID_HANDLE_VALUE)
{
m_bOpened = false;
return false;
}
m_bOpened = true;
return true;
}
//*********************************************************************************************
ssize_t CISOFile::Read(void *lpBuf, size_t uiBufSize)
{
if (!m_bOpened)
return -1;
if (uiBufSize > SSIZE_MAX)
uiBufSize = SSIZE_MAX;
char *pData = (char *)lpBuf;
if (m_cache.getSize() > 0)
{
long lTotalBytesRead = 0;
while (uiBufSize > 0)
{
if (m_cache.getMaxReadSize() )
{
unsigned int lBytes2Read = std::min(m_cache.getMaxReadSize(), static_cast<unsigned int>(uiBufSize));
m_cache.ReadData(pData, lBytes2Read );
uiBufSize -= lBytes2Read ;
pData += lBytes2Read;
lTotalBytesRead += lBytes2Read ;
}
if (m_cache.getMaxWriteSize() > 5000)
{
uint8_t buffer[5000];
long lBytesRead = m_isoReader.ReadFile( m_hFile, buffer, sizeof(buffer));
if (lBytesRead > 0)
m_cache.WriteData((char*)buffer, lBytesRead);
else
return 0;
}
}
return lTotalBytesRead;
}
return m_isoReader.ReadFile( m_hFile, (uint8_t*)pData, (long)uiBufSize);
}
//*********************************************************************************************
void CISOFile::Close()
{
if (!m_bOpened) return ;
m_isoReader.CloseFile( m_hFile);
}
//*********************************************************************************************
int64_t CISOFile::Seek(int64_t iFilePosition, int iWhence)
{
if (!m_bOpened) return -1;
int64_t lNewPos = m_isoReader.Seek(m_hFile, iFilePosition, iWhence);
if(lNewPos >= 0)
m_cache.Clear();
return lNewPos;
}
//*********************************************************************************************
int64_t CISOFile::GetLength()
{
if (!m_bOpened) return -1;
return m_isoReader.GetFileSize(m_hFile);
}
//*********************************************************************************************
int64_t CISOFile::GetPosition()
{
if (!m_bOpened) return -1;
return m_isoReader.GetFilePosition(m_hFile);
}
bool CISOFile::Exists(const CURL& url)
{
std::string strFName = "\\";
strFName += url.GetFileName();
for (int i = 0; i < (int)strFName.size(); ++i )
{
if (strFName[i] == '/') strFName[i] = '\\';
}
m_hFile = m_isoReader.OpenFile((char*)strFName.c_str());
if (m_hFile == INVALID_HANDLE_VALUE)
return false;
m_isoReader.CloseFile(m_hFile);
return true;
}
int CISOFile::Stat(const CURL& url, struct __stat64* buffer)
{
std::string strFName = "\\";
strFName += url.GetFileName();
for (int i = 0; i < (int)strFName.size(); ++i )
{
if (strFName[i] == '/') strFName[i] = '\\';
}
m_hFile = m_isoReader.OpenFile((char*)strFName.c_str());
if (m_hFile != INVALID_HANDLE_VALUE)
{
memset(buffer, 0, sizeof(struct __stat64));
buffer->st_size = m_isoReader.GetFileSize(m_hFile);
buffer->st_mode = _S_IFREG;
m_isoReader.CloseFile(m_hFile);
return 0;
}
errno = ENOENT;
return -1;
}
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