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utils/shadercompile/cmdsink.h

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+//========= 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