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*** Merged Code from Multiplayer Branch Revision 2960 ***
- Virtual File System (VFS) by birdflu. This is needed for Multiplayer and is also used for Single Player. Very neat system :-) - Multiplayer Version 1.1 + some additional features and bugfixes * INFO: If you compile a new EXE and want to test, be sure to also use the latest SVN GameDir files in your JA2 install directory * git-svn-id: https://ja2svn.mooo.com/source/ja2/trunk/GameSource/ja2_v1.13/Build@2961 3b4a5df2-a311-0410-b5c6-a8a6f20db521
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Wanne
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#include "vfs_uncompressed_lib_base.h"
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/********************************************************************************************/
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/********************************************************************************************/
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/********************************************************************************************/
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vfs::CUncompressedLibraryBase::~CUncompressedLibraryBase()
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{
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this->CloseLibrary();
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// delete sub dirs from catalogue
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tDirCatalogue::iterator it = m_catDirs.begin();
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for(; it != m_catDirs.end(); ++it)
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{
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delete it->second;
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}
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// LibData is invalid
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// just clear it, since the file handles were deleted before
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m_mapLibData.clear();
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m_catDirs.clear();
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}
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bool vfs::CUncompressedLibraryBase::CloseLibrary()
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{
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bool success = true;
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tLibData::iterator it = m_mapLibData.begin();
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for(; it != m_mapLibData .end(); ++it)
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{
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success &= it->first->Close();
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// what if closing of (at least) one file fails?? continue or not??
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// in the end, these are not real files!
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}
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return success;
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}
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bool vfs::CUncompressedLibraryBase::FileExists(vfs::Path const& sFileName)
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{
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vfs::Path sDir,sFile;
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sFileName.SplitLast(sDir,sFile);
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tDirCatalogue::iterator it = m_catDirs.find(sDir);
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if(it != m_catDirs.end())
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{
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return it->second->FileExists(sFile);
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}
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return false;
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}
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vfs::IBaseFile* vfs::CUncompressedLibraryBase::GetFile(vfs::Path const& sFileName)
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{
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return GetFileTyped(sFileName);
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}
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vfs::CUncompressedLibraryBase::tFileType* vfs::CUncompressedLibraryBase::GetFileTyped(vfs::Path const& sFileName)
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{
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vfs::Path sDir,sFile;
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sFileName.SplitLast(sDir,sFile);
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tDirCatalogue::iterator it = m_catDirs.find(sDir);
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if(it != m_catDirs.end())
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{
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return it->second->GetFileTyped(sFile);
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}
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return NULL;
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}
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bool vfs::CUncompressedLibraryBase::Close(tFileType *pFileHandle)
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{
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tLibData::iterator it = m_mapLibData.find(pFileHandle);
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if(it == m_mapLibData.end())
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{
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// wrong file handle
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return false;
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}
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// reset read position
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// can't do this when opening file,
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// because you could try to open a file when it is already open and would so reset the read position
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it->second.uiCurrentReadPosition = 0;
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if(m_uiNumberOfOpenedFiles > 0)
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{
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m_uiNumberOfOpenedFiles--;
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if(m_uiNumberOfOpenedFiles == 0)
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{
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m_pLibraryFile->Close();
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}
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}
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return true;
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}
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bool vfs::CUncompressedLibraryBase::OpenRead(tFileType *pFileHandle)
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{
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tLibData::iterator it = m_mapLibData.find(pFileHandle);
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if(it == m_mapLibData.end())
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{
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// wrong file handle
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return false;
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}
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m_uiNumberOfOpenedFiles++;
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if(m_uiNumberOfOpenedFiles == 1)
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{
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if(!m_pLibraryFile->IsOpenRead() && !m_pLibraryFile->OpenRead())
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{
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return false;
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}
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}
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// already open
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return true;
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}
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bool vfs::CUncompressedLibraryBase::Read(tFileType *pFileHandle, Byte* pData, UInt32 uiBytesToRead, UInt32& uiBytesRead)
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{
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tLibData::iterator it = m_mapLibData.find(pFileHandle);
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if(it == m_mapLibData.end())
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{
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// wrong file handle
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return false;
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}
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// if(m_pLibraryFile->IsOpen()) ... we could check it (*AGAIN*),
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// but the file implementation does it already,
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// and the user probably called 'OpenRead' too,
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// so why do it over and over again
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if( (it->second.uiCurrentReadPosition + uiBytesToRead) > it->second.uiFileSize )
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{
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// original implementation
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uiBytesRead = 0;
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return false;
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// or you could adjust the number of bytes to read
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uiBytesToRead = it->second.uiFileSize - it->second.uiCurrentReadPosition; // +-1 ???
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}
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// set lib-file's read-location to match location of virtual-file
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m_pLibraryFile->SetReadLocation(it->second.uiFileOffset + it->second.uiCurrentReadPosition,IBaseFile::SD_BEGIN);
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bool success = m_pLibraryFile->Read(pData,uiBytesToRead,uiBytesRead)
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&& (uiBytesToRead == uiBytesRead);
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if(success)
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{
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it->second.uiCurrentReadPosition += uiBytesRead;
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}
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// false if read operation failed
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return success;
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}
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vfs::UInt32 vfs::CUncompressedLibraryBase::GetReadLocation(tFileType *pFileHandle)
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{
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tLibData::iterator it = m_mapLibData.find(pFileHandle);
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if(it == m_mapLibData.end())
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{
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// wrong file handle
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return -1;
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}
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return it->second.uiCurrentReadPosition;
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}
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bool vfs::CUncompressedLibraryBase::SetReadLocation(tFileType *pFileHandle, vfs::UInt32 uiPositionInBytes)
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{
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tLibData::iterator it = m_mapLibData.find(pFileHandle);
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if(it == m_mapLibData.end())
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{
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// wrong file handle
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return false;
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}
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if( (uiPositionInBytes < 0) || (uiPositionInBytes >= (vfs::Int32)(it->second.uiFileSize)) )
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{
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return false;
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}
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// uiCurrentReadPosition is offset to file-offset
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it->second.uiCurrentReadPosition = uiPositionInBytes;
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return true;
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}
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bool vfs::CUncompressedLibraryBase::SetReadLocation(tFileType *pFileHandle, Int32 uiOffsetInBytes, IBaseFile::ESeekDir eSeekDir)
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{
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tLibData::iterator it = m_mapLibData.find(pFileHandle);
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if(it == m_mapLibData.end())
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{
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// wrong file handle
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return false;
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}
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if( abs(uiOffsetInBytes) > (Int32)(it->second.uiFileSize) )
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{
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// cannot be corrent in any case
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return false;
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}
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if(eSeekDir == IBaseFile::SD_BEGIN)
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{
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if(uiOffsetInBytes < 0)
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{
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return false;
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}
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it->second.uiCurrentReadPosition = uiOffsetInBytes;
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return true;
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}
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else if(eSeekDir == IBaseFile::SD_CURRENT)
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{
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vfs::Int32 temp = it->second.uiCurrentReadPosition + uiOffsetInBytes;
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if( (temp < 0) || (temp > (Int32)(it->second.uiFileSize)) )
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{
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return false;
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}
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it->second.uiCurrentReadPosition = temp;
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return true;
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}
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else if(eSeekDir == IBaseFile::SD_END)
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{
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if(uiOffsetInBytes > 0)
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{
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return false;
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}
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it->second.uiCurrentReadPosition = it->second.uiFileSize - uiOffsetInBytes;
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return true;
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}
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return false;
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}
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bool vfs::CUncompressedLibraryBase::GetFileSize(tFileType *pFileHandle, UInt32& uiFileSize)
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{
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tLibData::iterator it = m_mapLibData.find(pFileHandle);
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if(it == m_mapLibData.end())
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{
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// wrong file handle
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uiFileSize = 0;
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return false;
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}
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uiFileSize = it->second.uiFileSize;
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return true;
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}
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void vfs::CUncompressedLibraryBase::GetSubDirList(std::list<vfs::Path>& rlSubDirs)
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{
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tDirCatalogue::iterator it = m_catDirs.begin();
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for(;it != m_catDirs.end(); ++it)
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{
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rlSubDirs.push_back(it->first);
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}
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}
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vfs::CUncompressedLibraryBase::Iterator vfs::CUncompressedLibraryBase::begin()
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{
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return Iterator(new IterImpl(*this));
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}
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/************************************************************************/
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/************************************************************************/
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vfs::CUncompressedLibraryBase::IterImpl::IterImpl(vfs::CUncompressedLibraryBase &lib)
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: _lib(&lib)
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{
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_iter = _lib->m_mapLibData.begin();
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}
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vfs::CUncompressedLibraryBase::IterImpl::~IterImpl()
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{
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}
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vfs::CUncompressedLibraryBase::tFileType* vfs::CUncompressedLibraryBase::IterImpl::value()
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{
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if(_iter != _lib->m_mapLibData.end())
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{
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return _iter->first;
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}
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return NULL;
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}
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void vfs::CUncompressedLibraryBase::IterImpl::next()
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{
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if(_iter != _lib->m_mapLibData.end())
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{
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_iter++;
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}
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}
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