lldatapacker.h
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- /**
- * @file lldatapacker.h
- * @brief Data packer declaration for tightly storing binary data.
- *
- * $LicenseInfo:firstyear=2002&license=viewergpl$
- *
- * Copyright (c) 2002-2010, 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_LLDATAPACKER_H
- #define LL_LLDATAPACKER_H
- class LLColor4;
- class LLColor4U;
- class LLVector2;
- class LLVector3;
- class LLVector4;
- class LLUUID;
- class LLDataPacker
- {
- public:
- virtual ~LLDataPacker() {}
-
- // Not required to override, but error to call?
- virtual void reset();
- virtual void dumpBufferToLog();
- virtual BOOL hasNext() const = 0;
- virtual BOOL packString(const std::string& value, const char *name) = 0;
- virtual BOOL unpackString(std::string& value, const char *name) = 0;
- virtual BOOL packBinaryData(const U8 *value, S32 size, const char *name) = 0;
- virtual BOOL unpackBinaryData(U8 *value, S32 &size, const char *name) = 0;
- // Constant size binary data packing
- virtual BOOL packBinaryDataFixed(const U8 *value, S32 size, const char *name) = 0;
- virtual BOOL unpackBinaryDataFixed(U8 *value, S32 size, const char *name) = 0;
- virtual BOOL packU8(const U8 value, const char *name) = 0;
- virtual BOOL unpackU8(U8 &value, const char *name) = 0;
- virtual BOOL packU16(const U16 value, const char *name) = 0;
- virtual BOOL unpackU16(U16 &value, const char *name) = 0;
- virtual BOOL packU32(const U32 value, const char *name) = 0;
- virtual BOOL unpackU32(U32 &value, const char *name) = 0;
- virtual BOOL packS32(const S32 value, const char *name) = 0;
- virtual BOOL unpackS32(S32 &value, const char *name) = 0;
- virtual BOOL packF32(const F32 value, const char *name) = 0;
- virtual BOOL unpackF32(F32 &value, const char *name) = 0;
- // Packs a float into an integer, using the given size
- // and picks the right U* data type to pack into.
- BOOL packFixed(const F32 value, const char *name,
- const BOOL is_signed, const U32 int_bits, const U32 frac_bits);
- BOOL unpackFixed(F32 &value, const char *name,
- const BOOL is_signed, const U32 int_bits, const U32 frac_bits);
- virtual BOOL packColor4(const LLColor4 &value, const char *name) = 0;
- virtual BOOL unpackColor4(LLColor4 &value, const char *name) = 0;
- virtual BOOL packColor4U(const LLColor4U &value, const char *name) = 0;
- virtual BOOL unpackColor4U(LLColor4U &value, const char *name) = 0;
- virtual BOOL packVector2(const LLVector2 &value, const char *name) = 0;
- virtual BOOL unpackVector2(LLVector2 &value, const char *name) = 0;
- virtual BOOL packVector3(const LLVector3 &value, const char *name) = 0;
- virtual BOOL unpackVector3(LLVector3 &value, const char *name) = 0;
- virtual BOOL packVector4(const LLVector4 &value, const char *name) = 0;
- virtual BOOL unpackVector4(LLVector4 &value, const char *name) = 0;
- virtual BOOL packUUID(const LLUUID &value, const char *name) = 0;
- virtual BOOL unpackUUID(LLUUID &value, const char *name) = 0;
- U32 getPassFlags() const { return mPassFlags; }
- void setPassFlags(U32 flags) { mPassFlags = flags; }
- protected:
- LLDataPacker();
- protected:
- U32 mPassFlags;
- BOOL mWriteEnabled; // disable this to do things like determine filesize without actually copying data
- };
- class LLDataPackerBinaryBuffer : public LLDataPacker
- {
- public:
- LLDataPackerBinaryBuffer(U8 *bufferp, S32 size)
- : LLDataPacker(),
- mBufferp(bufferp),
- mCurBufferp(bufferp),
- mBufferSize(size)
- {
- mWriteEnabled = TRUE;
- }
- LLDataPackerBinaryBuffer()
- : LLDataPacker(),
- mBufferp(NULL),
- mCurBufferp(NULL),
- mBufferSize(0)
- {
- }
- /*virtual*/ BOOL packString(const std::string& value, const char *name);
- /*virtual*/ BOOL unpackString(std::string& value, const char *name);
- /*virtual*/ BOOL packBinaryData(const U8 *value, S32 size, const char *name);
- /*virtual*/ BOOL unpackBinaryData(U8 *value, S32 &size, const char *name);
- // Constant size binary data packing
- /*virtual*/ BOOL packBinaryDataFixed(const U8 *value, S32 size, const char *name);
- /*virtual*/ BOOL unpackBinaryDataFixed(U8 *value, S32 size, const char *name);
- /*virtual*/ BOOL packU8(const U8 value, const char *name);
- /*virtual*/ BOOL unpackU8(U8 &value, const char *name);
- /*virtual*/ BOOL packU16(const U16 value, const char *name);
- /*virtual*/ BOOL unpackU16(U16 &value, const char *name);
- /*virtual*/ BOOL packU32(const U32 value, const char *name);
- /*virtual*/ BOOL unpackU32(U32 &value, const char *name);
- /*virtual*/ BOOL packS32(const S32 value, const char *name);
- /*virtual*/ BOOL unpackS32(S32 &value, const char *name);
- /*virtual*/ BOOL packF32(const F32 value, const char *name);
- /*virtual*/ BOOL unpackF32(F32 &value, const char *name);
- /*virtual*/ BOOL packColor4(const LLColor4 &value, const char *name);
- /*virtual*/ BOOL unpackColor4(LLColor4 &value, const char *name);
- /*virtual*/ BOOL packColor4U(const LLColor4U &value, const char *name);
- /*virtual*/ BOOL unpackColor4U(LLColor4U &value, const char *name);
- /*virtual*/ BOOL packVector2(const LLVector2 &value, const char *name);
- /*virtual*/ BOOL unpackVector2(LLVector2 &value, const char *name);
- /*virtual*/ BOOL packVector3(const LLVector3 &value, const char *name);
- /*virtual*/ BOOL unpackVector3(LLVector3 &value, const char *name);
- /*virtual*/ BOOL packVector4(const LLVector4 &value, const char *name);
- /*virtual*/ BOOL unpackVector4(LLVector4 &value, const char *name);
- /*virtual*/ BOOL packUUID(const LLUUID &value, const char *name);
- /*virtual*/ BOOL unpackUUID(LLUUID &value, const char *name);
- S32 getCurrentSize() const { return (S32)(mCurBufferp - mBufferp); }
- S32 getBufferSize() const { return mBufferSize; }
- void reset() { mCurBufferp = mBufferp; mWriteEnabled = (mCurBufferp != NULL); }
- void freeBuffer() { delete [] mBufferp; mBufferp = mCurBufferp = NULL; mBufferSize = 0; mWriteEnabled = FALSE; }
- void assignBuffer(U8 *bufferp, S32 size)
- {
- mBufferp = bufferp;
- mCurBufferp = bufferp;
- mBufferSize = size;
- mWriteEnabled = TRUE;
- }
- const LLDataPackerBinaryBuffer& operator=(const LLDataPackerBinaryBuffer &a);
- /*virtual*/ BOOL hasNext() const { return getCurrentSize() < getBufferSize(); }
- /*virtual*/ void dumpBufferToLog();
- protected:
- inline BOOL verifyLength(const S32 data_size, const char *name);
- U8 *mBufferp;
- U8 *mCurBufferp;
- S32 mBufferSize;
- };
- inline BOOL LLDataPackerBinaryBuffer::verifyLength(const S32 data_size, const char *name)
- {
- if (mWriteEnabled && (mCurBufferp - mBufferp) > mBufferSize - data_size)
- {
- llwarns << "Buffer overflow in BinaryBuffer length verify, field name " << name << "!" << llendl;
- llwarns << "Current pos: " << (int)(mCurBufferp - mBufferp) << " Buffer size: " << mBufferSize << " Data size: " << data_size << llendl;
- return FALSE;
- }
- return TRUE;
- }
- class LLDataPackerAsciiBuffer : public LLDataPacker
- {
- public:
- LLDataPackerAsciiBuffer(char* bufferp, S32 size)
- {
- mBufferp = bufferp;
- mCurBufferp = bufferp;
- mBufferSize = size;
- mPassFlags = 0;
- mIncludeNames = FALSE;
- mWriteEnabled = TRUE;
- }
- LLDataPackerAsciiBuffer()
- {
- mBufferp = NULL;
- mCurBufferp = NULL;
- mBufferSize = 0;
- mPassFlags = 0;
- mIncludeNames = FALSE;
- mWriteEnabled = FALSE;
- }
- /*virtual*/ BOOL packString(const std::string& value, const char *name);
- /*virtual*/ BOOL unpackString(std::string& value, const char *name);
- /*virtual*/ BOOL packBinaryData(const U8 *value, S32 size, const char *name);
- /*virtual*/ BOOL unpackBinaryData(U8 *value, S32 &size, const char *name);
- // Constant size binary data packing
- /*virtual*/ BOOL packBinaryDataFixed(const U8 *value, S32 size, const char *name);
- /*virtual*/ BOOL unpackBinaryDataFixed(U8 *value, S32 size, const char *name);
- /*virtual*/ BOOL packU8(const U8 value, const char *name);
- /*virtual*/ BOOL unpackU8(U8 &value, const char *name);
- /*virtual*/ BOOL packU16(const U16 value, const char *name);
- /*virtual*/ BOOL unpackU16(U16 &value, const char *name);
- /*virtual*/ BOOL packU32(const U32 value, const char *name);
- /*virtual*/ BOOL unpackU32(U32 &value, const char *name);
- /*virtual*/ BOOL packS32(const S32 value, const char *name);
- /*virtual*/ BOOL unpackS32(S32 &value, const char *name);
- /*virtual*/ BOOL packF32(const F32 value, const char *name);
- /*virtual*/ BOOL unpackF32(F32 &value, const char *name);
- /*virtual*/ BOOL packColor4(const LLColor4 &value, const char *name);
- /*virtual*/ BOOL unpackColor4(LLColor4 &value, const char *name);
- /*virtual*/ BOOL packColor4U(const LLColor4U &value, const char *name);
- /*virtual*/ BOOL unpackColor4U(LLColor4U &value, const char *name);
- /*virtual*/ BOOL packVector2(const LLVector2 &value, const char *name);
- /*virtual*/ BOOL unpackVector2(LLVector2 &value, const char *name);
- /*virtual*/ BOOL packVector3(const LLVector3 &value, const char *name);
- /*virtual*/ BOOL unpackVector3(LLVector3 &value, const char *name);
- /*virtual*/ BOOL packVector4(const LLVector4 &value, const char *name);
- /*virtual*/ BOOL unpackVector4(LLVector4 &value, const char *name);
- /*virtual*/ BOOL packUUID(const LLUUID &value, const char *name);
- /*virtual*/ BOOL unpackUUID(LLUUID &value, const char *name);
- void setIncludeNames(BOOL b) { mIncludeNames = b; }
- // Include the trailing NULL so it's always a valid string
- S32 getCurrentSize() const { return (S32)(mCurBufferp - mBufferp) + 1; }
- S32 getBufferSize() const { return mBufferSize; }
- /*virtual*/ void reset() { mCurBufferp = mBufferp; mWriteEnabled = (mCurBufferp != NULL); }
- /*virtual*/ BOOL hasNext() const { return getCurrentSize() < getBufferSize(); }
- inline void freeBuffer();
- inline void assignBuffer(char* bufferp, S32 size);
- void dump();
- protected:
- void writeIndentedName(const char *name);
- BOOL getValueStr(const char *name, char *out_value, const S32 value_len);
-
- protected:
- inline BOOL verifyLength(const S32 data_size, const char *name);
- char *mBufferp;
- char *mCurBufferp;
- S32 mBufferSize;
- BOOL mIncludeNames; // useful for debugging, print the name of each field
- };
- inline void LLDataPackerAsciiBuffer::freeBuffer()
- {
- delete [] mBufferp;
- mBufferp = mCurBufferp = NULL;
- mBufferSize = 0;
- mWriteEnabled = FALSE;
- }
- inline void LLDataPackerAsciiBuffer::assignBuffer(char* bufferp, S32 size)
- {
- mBufferp = bufferp;
- mCurBufferp = bufferp;
- mBufferSize = size;
- mWriteEnabled = TRUE;
- }
- inline BOOL LLDataPackerAsciiBuffer::verifyLength(const S32 data_size, const char *name)
- {
- if (mWriteEnabled && (mCurBufferp - mBufferp) > mBufferSize - data_size)
- {
- llwarns << "Buffer overflow in AsciiBuffer length verify, field name " << name << "!" << llendl;
- llwarns << "Current pos: " << (int)(mCurBufferp - mBufferp) << " Buffer size: " << mBufferSize << " Data size: " << data_size << llendl;
- return FALSE;
- }
- return TRUE;
- }
- class LLDataPackerAsciiFile : public LLDataPacker
- {
- public:
- LLDataPackerAsciiFile(LLFILE *fp, const S32 indent = 2)
- : LLDataPacker(),
- mIndent(indent),
- mFP(fp),
- mOutputStream(NULL),
- mInputStream(NULL)
- {
- }
- LLDataPackerAsciiFile(std::ostream& output_stream, const S32 indent = 2)
- : LLDataPacker(),
- mIndent(indent),
- mFP(NULL),
- mOutputStream(&output_stream),
- mInputStream(NULL)
- {
- mWriteEnabled = TRUE;
- }
- LLDataPackerAsciiFile(std::istream& input_stream, const S32 indent = 2)
- : LLDataPacker(),
- mIndent(indent),
- mFP(NULL),
- mOutputStream(NULL),
- mInputStream(&input_stream)
- {
- }
- /*virtual*/ BOOL packString(const std::string& value, const char *name);
- /*virtual*/ BOOL unpackString(std::string& value, const char *name);
- /*virtual*/ BOOL packBinaryData(const U8 *value, S32 size, const char *name);
- /*virtual*/ BOOL unpackBinaryData(U8 *value, S32 &size, const char *name);
- /*virtual*/ BOOL packBinaryDataFixed(const U8 *value, S32 size, const char *name);
- /*virtual*/ BOOL unpackBinaryDataFixed(U8 *value, S32 size, const char *name);
- /*virtual*/ BOOL packU8(const U8 value, const char *name);
- /*virtual*/ BOOL unpackU8(U8 &value, const char *name);
- /*virtual*/ BOOL packU16(const U16 value, const char *name);
- /*virtual*/ BOOL unpackU16(U16 &value, const char *name);
- /*virtual*/ BOOL packU32(const U32 value, const char *name);
- /*virtual*/ BOOL unpackU32(U32 &value, const char *name);
- /*virtual*/ BOOL packS32(const S32 value, const char *name);
- /*virtual*/ BOOL unpackS32(S32 &value, const char *name);
- /*virtual*/ BOOL packF32(const F32 value, const char *name);
- /*virtual*/ BOOL unpackF32(F32 &value, const char *name);
- /*virtual*/ BOOL packColor4(const LLColor4 &value, const char *name);
- /*virtual*/ BOOL unpackColor4(LLColor4 &value, const char *name);
- /*virtual*/ BOOL packColor4U(const LLColor4U &value, const char *name);
- /*virtual*/ BOOL unpackColor4U(LLColor4U &value, const char *name);
- /*virtual*/ BOOL packVector2(const LLVector2 &value, const char *name);
- /*virtual*/ BOOL unpackVector2(LLVector2 &value, const char *name);
- /*virtual*/ BOOL packVector3(const LLVector3 &value, const char *name);
- /*virtual*/ BOOL unpackVector3(LLVector3 &value, const char *name);
- /*virtual*/ BOOL packVector4(const LLVector4 &value, const char *name);
- /*virtual*/ BOOL unpackVector4(LLVector4 &value, const char *name);
- /*virtual*/ BOOL packUUID(const LLUUID &value, const char *name);
- /*virtual*/ BOOL unpackUUID(LLUUID &value, const char *name);
- protected:
- void writeIndentedName(const char *name);
- BOOL getValueStr(const char *name, char *out_value, const S32 value_len);
-
- /*virtual*/ BOOL hasNext() const { return true; }
- protected:
- S32 mIndent;
- LLFILE *mFP;
- std::ostream* mOutputStream;
- std::istream* mInputStream;
- };
- #endif // LL_LLDATAPACKER