source-engine/utils/shadercompile/cmdsink.h

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2020-04-22 16:56:21 +00:00
//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose: Command sink interface implementation.
//
// $NoKeywords: $
//
//=============================================================================//
#ifndef CMDSINK_H
#define CMDSINK_H
#ifdef _WIN32
#pragma once
#endif
#include <stdio.h>
#include <tier1/utlbuffer.h>
namespace CmdSink
{
/*
struct IResponse
Interface to give back command execution results.
*/
struct IResponse
{
virtual ~IResponse( void ) {}
virtual void Release( void ) { delete this; }
// Returns whether the command succeeded
virtual bool Succeeded( void ) = 0;
// If the command succeeded returns the result buffer length, otherwise zero
virtual size_t GetResultBufferLen( void ) = 0;
// If the command succeeded returns the result buffer base pointer, otherwise NULL
virtual const void * GetResultBuffer( void ) = 0;
// Returns a zero-terminated string of messages reported during command execution, or NULL if nothing was reported
virtual const char * GetListing( void ) = 0;
};
/*
Response implementation when the result should appear in
one file and the listing should appear in another file.
*/
class CResponseFiles : public IResponse
{
public:
explicit CResponseFiles( char const *szFileResult, char const *szFileListing );
~CResponseFiles( void );
public:
// Returns whether the command succeeded
virtual bool Succeeded( void );
// If the command succeeded returns the result buffer length, otherwise zero
virtual size_t GetResultBufferLen( void );
// If the command succeeded returns the result buffer base pointer, otherwise NULL
virtual const void * GetResultBuffer( void );
// Returns a zero-terminated string of messages reported during command execution
virtual const char * GetListing( void );
protected:
void OpenResultFile( void ); //!< Opens the result file if not open yet
void ReadResultFile( void ); //!< Reads the result buffer if not read yet
void ReadListingFile( void ); //!< Reads the listing buffer if not read yet
protected:
char m_szFileResult[MAX_PATH]; //!< Name of the result file
char m_szFileListing[MAX_PATH]; //!< Name of the listing file
FILE *m_fResult; //!< Result file (NULL if not open)
FILE *m_fListing; //!< Listing file (NULL if not open)
CUtlBuffer m_bufResult; //!< Buffer holding the result data
size_t m_lenResult; //!< Result data length (0 if result not read yet)
const void *m_dataResult; //!< Data buffer pointer (NULL if result not read yet)
CUtlBuffer m_bufListing; //!< Buffer holding the listing
const char *m_dataListing; //!< Listing buffer pointer (NULL if listing not read yet)
};
/*
Response implementation when the result is a generic error.
*/
class CResponseError : public IResponse
{
public:
explicit CResponseError( void ) {}
~CResponseError( void ) {}
public:
virtual bool Succeeded( void ) { return false; }
virtual size_t GetResultBufferLen( void ) { return 0; }
virtual const void * GetResultBuffer( void ) { return NULL; }
virtual const char * GetListing( void ) { return NULL; }
};
}; // namespace CmdSink
#endif // #ifndef CMDSINK_H