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118 lines
3.1 KiB
C++
118 lines
3.1 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose: Command sink interface implementation.
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//
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// $NoKeywords: $
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//
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//=============================================================================//
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#ifndef CMDSINK_H
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#define CMDSINK_H
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#ifdef _WIN32
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#pragma once
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#endif
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#include <stdio.h>
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#include <tier1/utlbuffer.h>
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namespace CmdSink
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{
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/*
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struct IResponse
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Interface to give back command execution results.
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*/
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struct IResponse
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{
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virtual ~IResponse( void ) {}
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virtual void Release( void ) { delete this; }
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// Returns whether the command succeeded
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virtual bool Succeeded( void ) = 0;
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// If the command succeeded returns the result buffer length, otherwise zero
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virtual size_t GetResultBufferLen( void ) = 0;
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// If the command succeeded returns the result buffer base pointer, otherwise NULL
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virtual const void * GetResultBuffer( void ) = 0;
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// Returns a zero-terminated string of messages reported during command execution, or NULL if nothing was reported
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virtual const char * GetListing( void ) = 0;
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};
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/*
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Response implementation when the result should appear in
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one file and the listing should appear in another file.
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*/
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class CResponseFiles : public IResponse
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{
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public:
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explicit CResponseFiles( char const *szFileResult, char const *szFileListing );
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~CResponseFiles( void );
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public:
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// Returns whether the command succeeded
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virtual bool Succeeded( void );
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// If the command succeeded returns the result buffer length, otherwise zero
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virtual size_t GetResultBufferLen( void );
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// If the command succeeded returns the result buffer base pointer, otherwise NULL
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virtual const void * GetResultBuffer( void );
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// Returns a zero-terminated string of messages reported during command execution
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virtual const char * GetListing( void );
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protected:
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void OpenResultFile( void ); //!< Opens the result file if not open yet
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void ReadResultFile( void ); //!< Reads the result buffer if not read yet
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void ReadListingFile( void ); //!< Reads the listing buffer if not read yet
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protected:
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char m_szFileResult[MAX_PATH]; //!< Name of the result file
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char m_szFileListing[MAX_PATH]; //!< Name of the listing file
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FILE *m_fResult; //!< Result file (NULL if not open)
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FILE *m_fListing; //!< Listing file (NULL if not open)
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CUtlBuffer m_bufResult; //!< Buffer holding the result data
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size_t m_lenResult; //!< Result data length (0 if result not read yet)
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const void *m_dataResult; //!< Data buffer pointer (NULL if result not read yet)
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CUtlBuffer m_bufListing; //!< Buffer holding the listing
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const char *m_dataListing; //!< Listing buffer pointer (NULL if listing not read yet)
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};
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/*
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Response implementation when the result is a generic error.
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*/
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class CResponseError : public IResponse
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{
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public:
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explicit CResponseError( void ) {}
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~CResponseError( void ) {}
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public:
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virtual bool Succeeded( void ) { return false; }
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virtual size_t GetResultBufferLen( void ) { return 0; }
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virtual const void * GetResultBuffer( void ) { return NULL; }
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virtual const char * GetListing( void ) { return NULL; }
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};
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}; // namespace CmdSink
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#endif // #ifndef CMDSINK_H
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