164 lines
3.3 KiB
C++
164 lines
3.3 KiB
C++
// Copyright (C) 1997 Microsoft Corporation. All rights reserved.
|
|
|
|
#include "header.h"
|
|
#include "state.h"
|
|
#include "fs.h"
|
|
#include "hhtypes.h"
|
|
|
|
CState::CState(PCSTR pszChm)
|
|
{
|
|
m_pfs = NULL;
|
|
m_pSubFS = NULL;
|
|
|
|
// Make sure we have a name we can use to create a sub file with
|
|
|
|
PCSTR pszTmp = StrChr(pszChm, CH_COLON);
|
|
if (pszTmp)
|
|
pszChm = pszTmp + 1;
|
|
pszTmp = strstr(pszChm, "//");
|
|
if (pszTmp)
|
|
pszChm = pszTmp + 2;
|
|
pszTmp = strstr(pszChm, "\\\\");
|
|
if (pszTmp)
|
|
pszChm = pszTmp + 2;
|
|
|
|
m_cszChm = pszChm;
|
|
}
|
|
|
|
HRESULT CState::Open(PCSTR pszName, DWORD dwAccess)
|
|
{
|
|
HRESULT hr;
|
|
|
|
lstrcpy(m_pszName, pszName);
|
|
m_dwAccess = dwAccess;
|
|
hr = _IOpen();
|
|
Close();
|
|
return hr;
|
|
}
|
|
|
|
HRESULT CState::_IOpen()
|
|
{
|
|
char szPath[MAX_URL];
|
|
HRESULT hr;
|
|
|
|
// force access modes
|
|
if( (m_dwAccess & STGM_WRITE) || (m_dwAccess & STGM_READWRITE) ) {
|
|
m_dwAccess &= ~STGM_WRITE;
|
|
m_dwAccess |= STGM_READWRITE | STGM_SHARE_EXCLUSIVE;
|
|
}
|
|
else
|
|
m_dwAccess |= STGM_SHARE_DENY_WRITE;
|
|
|
|
if (!m_pfs) {
|
|
|
|
GetRegWindowsDirectory(szPath);
|
|
AddTrailingBackslash(szPath);
|
|
|
|
HHGetUserDataPathname( szPath, sizeof(szPath) );
|
|
|
|
m_pfs = new CFileSystem;
|
|
m_pfs->Init();
|
|
hr = m_pfs->Open(szPath, STGM_READWRITE | STGM_SHARE_EXCLUSIVE );
|
|
if(hr == STG_E_SHAREVIOLATION)
|
|
{
|
|
Sleep(200);
|
|
hr = m_pfs->Open(szPath, STGM_READWRITE | STGM_SHARE_EXCLUSIVE );
|
|
if(FAILED(hr))
|
|
{
|
|
delete m_pfs;
|
|
m_pfs = NULL;
|
|
return hr;
|
|
}
|
|
}
|
|
if (FAILED(hr))
|
|
hr = m_pfs->CreateUncompressed(szPath);
|
|
if (FAILED(hr)) {
|
|
delete m_pfs;
|
|
m_pfs = NULL;
|
|
return hr;
|
|
}
|
|
}
|
|
if (m_pSubFS)
|
|
delete m_pSubFS; // close any previous subfile
|
|
m_pSubFS = new CSubFileSystem(m_pfs);
|
|
strcpy(szPath, m_cszChm);
|
|
AddTrailingBackslash(szPath);
|
|
strcat(szPath, m_pszName);
|
|
|
|
hr = m_pSubFS->OpenSub(szPath, m_dwAccess);
|
|
if (FAILED(hr) && ((m_dwAccess & STGM_WRITE) || (m_dwAccess & STGM_READWRITE)) )
|
|
hr = m_pSubFS->CreateUncompressedSub(szPath);
|
|
if (FAILED(hr)) {
|
|
delete m_pSubFS;
|
|
m_pSubFS = NULL;
|
|
}
|
|
return hr;
|
|
}
|
|
|
|
HRESULT CState::Read(void* pData, DWORD cb, DWORD* pcbRead)
|
|
{
|
|
HRESULT hr;
|
|
|
|
_IOpen();
|
|
if (!m_pSubFS)
|
|
return STG_E_INVALIDHANDLE;
|
|
|
|
hr = m_pSubFS->ReadSub(pData, cb, pcbRead);
|
|
Close();
|
|
return hr;
|
|
}
|
|
|
|
DWORD CState::Write(const void* pData, DWORD cb)
|
|
{
|
|
HRESULT hr;
|
|
|
|
_IOpen();
|
|
if (!m_pSubFS)
|
|
return STG_E_INVALIDHANDLE;
|
|
hr = m_pSubFS->WriteSub(pData, cb);
|
|
Close();
|
|
return hr;
|
|
}
|
|
|
|
CState::~CState()
|
|
{
|
|
if (m_pSubFS)
|
|
delete m_pSubFS; // close any previous subfile
|
|
if (m_pfs)
|
|
delete m_pfs;
|
|
}
|
|
|
|
void CState::Close()
|
|
{
|
|
if (m_pSubFS) {
|
|
delete m_pSubFS; // close any previous subfile
|
|
m_pSubFS = NULL;
|
|
}
|
|
if (m_pfs)
|
|
{
|
|
delete m_pfs;
|
|
m_pfs = NULL;
|
|
}
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////
|
|
//
|
|
//
|
|
//
|
|
HRESULT
|
|
CState::Delete()
|
|
{
|
|
HRESULT hr = S_FALSE ;
|
|
|
|
_IOpen();
|
|
if (m_pSubFS)
|
|
{
|
|
hr = m_pSubFS->DeleteSub() ; // Removes the element from the state.
|
|
|
|
// Overkill, but what the hey!
|
|
Close() ;
|
|
}
|
|
Close();
|
|
return hr ;
|
|
}
|