116 lines
2.4 KiB
C++
116 lines
2.4 KiB
C++
#include "tier1/utlbuffer.h"
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#include "tier2/ifilesystem.h"
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#include "tier1/interface.h"
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#include "tier0/lib.h"
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#include <cstdio>
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size_t IFileHandle::Write( const void *pData, size_t nDataSize )
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{
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return m_pFileSystem->Write(this, pData, nDataSize);
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}
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size_t IFileHandle::Read( void *pData, size_t nDataSize )
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{
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return m_pFileSystem->Read(this, pData, nDataSize);
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}
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size_t IFileHandle::Seek( ESeekMode eSeekMode, size_t nOffset )
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{
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return m_pFileSystem->Seek(this, eSeekMode, nOffset);
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}
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size_t IFileHandle::Tell( void )
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{
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return m_pFileSystem->Tell(this);
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}
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size_t IFileHandle::Size( void )
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{
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return m_pFileSystem->Size(this);
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}
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void IFileHandle::Close( void )
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{
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m_pFileSystem->Close(this);
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}
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class CFileSystem : public IFileSystem
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{
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public:
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virtual void Init() override {
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};
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virtual void Shutdown() override {
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};
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virtual IFileHandle *Open( const char *szFileName, int eOpCode ) override
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{
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IFileSystem *pFileSystem;
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IFileHandle *pHandle = NULL;
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for ( pFileSystem = g_pFileSystems; pFileSystem; pFileSystem = pFileSystem->m_pNext )
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{
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pHandle = pFileSystem->Open(szFileName, eOpCode);
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if (pHandle) return pHandle;
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}
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return NULL;
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}
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virtual size_t Write( IFileHandle *pFile, const void *pData, size_t nDataSize ) override
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{
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return pFile->Write(pData, nDataSize);
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}
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virtual size_t Read( IFileHandle *pFile, void *pData, size_t nDataSize ) override
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{
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return pFile->Read(pData, nDataSize);
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}
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virtual size_t Seek( IFileHandle *pFile, ESeekMode eSeekMode, size_t nOffset ) override
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{
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return pFile->Seek(eSeekMode, nOffset);
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}
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virtual size_t Tell( IFileHandle *pFile ) override
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{
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return pFile->Tell();
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}
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virtual size_t Size( IFileHandle *pFile ) override
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{
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return pFile->Size();
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}
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virtual void Close( IFileHandle *pFile ) override
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{
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}
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virtual CUtlBuffer<unsigned char> Read( IFileHandle *pFile ) override
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{
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CUtlBuffer<unsigned char> buffer;
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buffer = CUtlBuffer<unsigned char>(Size(pFile));
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Read(pFile, buffer.GetMemory(), buffer.GetSize());
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return buffer;
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}
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};
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static CFileSystem s_fileSystem;
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IFileSystem *filesystem = &s_fileSystem;
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IFileSystem *g_pFileSystems;
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CFileSystemRegistry::CFileSystemRegistry( InstantiateFileSystemFn fn, const char *szFileSystem )
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{
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IFileSystem *pFileSystem = fn();
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pFileSystem->RegisterFileSystem();
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}
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void IFileSystem::RegisterFileSystem()
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{
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m_pNext = g_pFileSystems;
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g_pFileSystems = this;
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};
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