llpipeutil.h
上传用户:king477883
上传日期:2021-03-01
资源大小:9553k
文件大小:4k
- /**
- * @file llpipeutil.h
- * @date 2006-05-18
- * @brief Utility pipe fittings for injecting and extracting strings
- *
- * $LicenseInfo:firstyear=2006&license=viewergpl$
- *
- * Copyright (c) 2006-2010, Linden Research, Inc.
- *
- * Second Life Viewer Source Code
- * The source code in this file ("Source Code") is provided by Linden Lab
- * to you under the terms of the GNU General Public License, version 2.0
- * ("GPL"), unless you have obtained a separate licensing agreement
- * ("Other License"), formally executed by you and Linden Lab. Terms of
- * the GPL can be found in doc/GPL-license.txt in this distribution, or
- * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
- *
- * There are special exceptions to the terms and conditions of the GPL as
- * it is applied to this Source Code. View the full text of the exception
- * in the file doc/FLOSS-exception.txt in this software distribution, or
- * online at
- * http://secondlifegrid.net/programs/open_source/licensing/flossexception
- *
- * By copying, modifying or distributing this software, you acknowledge
- * that you have read and understood your obligations described above,
- * and agree to abide by those obligations.
- *
- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
- * COMPLETENESS OR PERFORMANCE.
- * $/LicenseInfo$
- */
- #ifndef LL_LLPIPEUTIL_H
- #define LL_LLPIPEUTIL_H
- #include "lliopipe.h"
- /**
- * @brief Simple function which pumps for the specified time.
- */
- F32 pump_loop(LLPumpIO* pump, F32 seconds);
- /**
- * @brief Simple class which writes a string and then marks the stream
- * as done.
- */
- class LLPipeStringInjector : public LLIOPipe
- {
- public:
- LLPipeStringInjector(const std::string& string)
- : mString(string)
- { }
-
- protected:
- virtual EStatus process_impl(
- const LLChannelDescriptors& channels,
- buffer_ptr_t& buffer,
- bool& eos,
- LLSD& context,
- LLPumpIO* pump);
- private:
- std::string mString;
- };
- class LLPipeStringExtractor : public LLIOPipe
- {
- public:
- LLPipeStringExtractor() : mDone(false) { }
-
- bool done() { return mDone; }
- std::string string() { return mString; }
-
- protected:
- // LLIOPipe API implementation.
- virtual EStatus process_impl(
- const LLChannelDescriptors& channels,
- LLIOPipe::buffer_ptr_t& buffer,
- bool& eos,
- LLSD& context,
- LLPumpIO* pump);
- private:
- bool mDone;
- std::string mString;
- };
- /**
- * @brief Generate a specified number of bytes of random data
- */
- class LLIOFuzz : public LLIOPipe
- {
- public:
- LLIOFuzz(int byte_count) : mByteCount(byte_count) {}
-
- protected:
- virtual EStatus process_impl(
- const LLChannelDescriptors& channels,
- buffer_ptr_t& buffer,
- bool& eos,
- LLSD& context,
- LLPumpIO* pump);
- private:
- int mByteCount;
- };
- /**
- * @brief Generate some ascii fuz
- */
- class LLIOASCIIFuzz : public LLIOPipe
- {
- public:
- LLIOASCIIFuzz(int byte_count) : mByteCount(byte_count) {}
-
- protected:
- virtual EStatus process_impl(
- const LLChannelDescriptors& channels,
- buffer_ptr_t& buffer,
- bool& eos,
- LLSD& context,
- LLPumpIO* pump);
- private:
- int mByteCount;
- };
- /**
- * @brief Pipe that does nothing except return STATUS_OK
- */
- class LLIONull : public LLIOPipe
- {
- public:
- LLIONull() {}
-
- protected:
- virtual EStatus process_impl(
- const LLChannelDescriptors& channels,
- buffer_ptr_t& buffer,
- bool& eos,
- LLSD& context,
- LLPumpIO* pump);
- };
- /**
- * @brief Pipe that sleeps, and then responds later.
- */
- class LLIOSleeper : public LLIOPipe
- {
- public:
- LLIOSleeper() : mRespond(false) {}
-
- protected:
- virtual EStatus process_impl(
- const LLChannelDescriptors& channels,
- buffer_ptr_t& buffer,
- bool& eos,
- LLSD& context,
- LLPumpIO* pump);
- private:
- bool mRespond;
- };
- #endif // LL_LLPIPEUTIL_H