You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@pulsar.apache.org by mm...@apache.org on 2021/09/07 03:00:36 UTC
[pulsar] branch branch-2.8 updated: [C++] Move all C symbols into
C++ pulsar namespace (#11919)
This is an automated email from the ASF dual-hosted git repository.
mmerli pushed a commit to branch branch-2.8
in repository https://gitbox.apache.org/repos/asf/pulsar.git
The following commit(s) were added to refs/heads/branch-2.8 by this push:
new a5eb4ce [C++] Move all C symbols into C++ pulsar namespace (#11919)
a5eb4ce is described below
commit a5eb4ceb70fa2b2c03962f1c659e76bad3d05c84
Author: Matteo Merli <mm...@apache.org>
AuthorDate: Sun Sep 5 19:06:21 2021 -0700
[C++] Move all C symbols into C++ pulsar namespace (#11919)
* [C++] Move all C symbols into C++ pulsar namespace
* Fixed formatting
* Fixed include to be outside of namespace scope
---
pulsar-client-cpp/lib/CMakeLists.txt | 2 +-
pulsar-client-cpp/lib/checksum/crc32c_sse42.cc | 7 +-
pulsar-client-cpp/lib/checksum/crc32c_sse42.h | 12 +-
pulsar-client-cpp/lib/checksum/crc32c_sw.cc | 4 +
pulsar-client-cpp/lib/checksum/crc32c_sw.h | 7 +-
pulsar-client-cpp/lib/checksum/gf2.hpp | 4 +
pulsar-client-cpp/lib/lz4/lz4.c | 1516 ------------------------
pulsar-client-cpp/lib/lz4/lz4.cc | 1507 +++++++++++++++++++++++
pulsar-client-cpp/lib/lz4/lz4.h | 113 +-
9 files changed, 1601 insertions(+), 1571 deletions(-)
diff --git a/pulsar-client-cpp/lib/CMakeLists.txt b/pulsar-client-cpp/lib/CMakeLists.txt
index 96d7283..6e970fa 100644
--- a/pulsar-client-cpp/lib/CMakeLists.txt
+++ b/pulsar-client-cpp/lib/CMakeLists.txt
@@ -17,7 +17,7 @@
# under the License.
#
-file(GLOB PULSAR_SOURCES *.cc *.h lz4/*.c lz4/*.h checksum/*.cc checksum/*.h stats/*.cc stats/*.h c/*.cc c/*.h auth/*.cc auth/*.h auth/athenz/*.cc auth/athenz/*.h)
+file(GLOB PULSAR_SOURCES *.cc *.h lz4/*.cc lz4/*.h checksum/*.cc checksum/*.h stats/*.cc stats/*.h c/*.cc c/*.h auth/*.cc auth/*.h auth/athenz/*.cc auth/athenz/*.h)
execute_process(COMMAND python ${CMAKE_SOURCE_DIR}/../src/get-project-version.py OUTPUT_STRIP_TRAILING_WHITESPACE OUTPUT_VARIABLE PV)
set (CMAKE_CXX_FLAGS " ${CMAKE_CXX_FLAGS} -D_PULSAR_VERSION_=\\\"${PV}\\\"")
diff --git a/pulsar-client-cpp/lib/checksum/crc32c_sse42.cc b/pulsar-client-cpp/lib/checksum/crc32c_sse42.cc
index 5126ec9..14e769f 100644
--- a/pulsar-client-cpp/lib/checksum/crc32c_sse42.cc
+++ b/pulsar-client-cpp/lib/checksum/crc32c_sse42.cc
@@ -29,6 +29,7 @@
#include <assert.h>
#include <stdlib.h>
#include "lib/checksum/crc32c_sw.h"
+#include "gf2.hpp"
#if BOOST_ARCH_X86_64
#include <nmmintrin.h> // SSE4.2
@@ -63,6 +64,8 @@
#define DEBUG_PRINTF4(fmt, v1, v2, v3, v4)
#endif
+namespace pulsar {
+
static bool initialized = false;
static bool has_sse42 = false;
static bool has_pclmulqdq = false;
@@ -95,8 +98,6 @@ bool crc32c_initialize() {
return has_sse42;
}
-#include "gf2.hpp"
-
chunk_config::chunk_config(size_t words, const chunk_config *next) : words(words), next(next) {
assert(words > 0);
assert(!next || next->words < words);
@@ -265,3 +266,5 @@ uint32_t crc32c(uint32_t init, const void *buf, size_t len, const chunk_config *
}
#endif
+
+} // namespace pulsar
diff --git a/pulsar-client-cpp/lib/checksum/crc32c_sse42.h b/pulsar-client-cpp/lib/checksum/crc32c_sse42.h
index d8e923d..8e91bfc 100644
--- a/pulsar-client-cpp/lib/checksum/crc32c_sse42.h
+++ b/pulsar-client-cpp/lib/checksum/crc32c_sse42.h
@@ -15,6 +15,8 @@
******************************************************************************/
#include "int_types.h"
+namespace pulsar {
+
bool crc32c_initialize();
class chunk_config {
@@ -25,19 +27,21 @@ class chunk_config {
};
const size_t words;
- const chunk_config* const next;
+ const chunk_config *const next;
uint32_t shift1[256];
uint32_t shift2[256];
- chunk_config(size_t words, const chunk_config* next = 0);
+ chunk_config(size_t words, const chunk_config *next = 0);
size_t loops() const { return (words - 1) / 3; }
+
size_t extra() const { return (words - 1) % 3 + 1; }
private:
- chunk_config& operator=(const chunk_config&);
+ chunk_config &operator=(const chunk_config &);
static void make_shift_table(size_t bytes, uint32_t table[256]);
};
-uint32_t crc32c(uint32_t init, const void* buf, size_t len, const chunk_config* config);
+uint32_t crc32c(uint32_t init, const void *buf, size_t len, const chunk_config *config);
+} // namespace pulsar
diff --git a/pulsar-client-cpp/lib/checksum/crc32c_sw.cc b/pulsar-client-cpp/lib/checksum/crc32c_sw.cc
index 3dacdd3..d03802c 100644
--- a/pulsar-client-cpp/lib/checksum/crc32c_sw.cc
+++ b/pulsar-client-cpp/lib/checksum/crc32c_sw.cc
@@ -36,6 +36,8 @@
#include "crc32c_sw.h"
#include <mutex>
+namespace pulsar {
+
/* CRC-32C (iSCSI) polynomial in reversed bit order. */
#define POLY 0x82f63b78
@@ -96,3 +98,5 @@ uint32_t crc32c_sw(uint32_t crci, const void *buf, int len) {
}
return (uint32_t)crc ^ 0xffffffff;
}
+
+} // namespace pulsar
diff --git a/pulsar-client-cpp/lib/checksum/crc32c_sw.h b/pulsar-client-cpp/lib/checksum/crc32c_sw.h
index d7e7dbc..9db6e97 100644
--- a/pulsar-client-cpp/lib/checksum/crc32c_sw.h
+++ b/pulsar-client-cpp/lib/checksum/crc32c_sw.h
@@ -16,11 +16,12 @@
* specific language governing permissions and limitations
* under the License.
*/
-#ifndef LOGGING_CRC32C_SW_H__
-#define LOGGING_CRC32C_SW_H__
+#pragma once
#include <stdint.h>
+namespace pulsar {
+
uint32_t crc32c_sw(uint32_t crc, const void* data, int length);
-#endif
+} // namespace pulsar
diff --git a/pulsar-client-cpp/lib/checksum/gf2.hpp b/pulsar-client-cpp/lib/checksum/gf2.hpp
index b7348a4..06bde0e 100644
--- a/pulsar-client-cpp/lib/checksum/gf2.hpp
+++ b/pulsar-client-cpp/lib/checksum/gf2.hpp
@@ -20,6 +20,8 @@
#pragma warning(disable:4146) // unary minus operator applied to unsigned type, result still unsigned
#endif
+namespace pulsar {
+
// Type trait for unsigned integers of at least N bytes
template<unsigned int N>
struct uint_bytes {
@@ -197,3 +199,5 @@ void pow(bitmatrix<N, N>& result, const bitmatrix<N, N>& a, uint64_t n) {
result = *presult;
}
}
+
+} // namespace pulsar
diff --git a/pulsar-client-cpp/lib/lz4/lz4.c b/pulsar-client-cpp/lib/lz4/lz4.c
deleted file mode 100644
index 08cf6b5..0000000
--- a/pulsar-client-cpp/lib/lz4/lz4.c
+++ /dev/null
@@ -1,1516 +0,0 @@
-/*
- LZ4 - Fast LZ compression algorithm
- Copyright (C) 2011-2015, Yann Collet.
-
- BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions are
- met:
-
- * Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above
- copyright notice, this list of conditions and the following disclaimer
- in the documentation and/or other materials provided with the
- distribution.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
- You can contact the author at :
- - LZ4 source repository : https://github.com/Cyan4973/lz4
- - LZ4 public forum : https://groups.google.com/forum/#!forum/lz4c
-*/
-
-
-/**************************************
-* Tuning parameters
-**************************************/
-/*
- * HEAPMODE :
- * Select how default compression functions will allocate memory for their hash table,
- * in memory stack (0:default, fastest), or in memory heap (1:requires malloc()).
- */
-#define HEAPMODE 0
-
-/*
- * ACCELERATION_DEFAULT :
- * Select "acceleration" for LZ4_compress_fast() when parameter value <= 0
- */
-#define ACCELERATION_DEFAULT 1
-
-
-/**************************************
-* CPU Feature Detection
-**************************************/
-/*
- * LZ4_FORCE_SW_BITCOUNT
- * Define this parameter if your target system or compiler does not support hardware bit count
- */
-#if defined(_MSC_VER) && defined(_WIN32_WCE) /* Visual Studio for Windows CE does not support Hardware bit count */
-# define LZ4_FORCE_SW_BITCOUNT
-#endif
-
-
-/**************************************
-* Includes
-**************************************/
-#include "lz4.h"
-
-
-/**************************************
-* Compiler Options
-**************************************/
-#ifdef _MSC_VER /* Visual Studio */
-# define FORCE_INLINE static __forceinline
-# include <intrin.h>
-# pragma warning(disable : 4127) /* disable: C4127: conditional expression is constant */
-# pragma warning(disable : 4293) /* disable: C4293: too large shift (32-bits) */
-#else
-# if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */
-# if defined(__GNUC__) || defined(__clang__)
-# define FORCE_INLINE static inline __attribute__((always_inline))
-# else
-# define FORCE_INLINE static inline
-# endif
-# else
-# define FORCE_INLINE static
-# endif /* __STDC_VERSION__ */
-#endif /* _MSC_VER */
-
-/* LZ4_GCC_VERSION is defined into lz4.h */
-#if (LZ4_GCC_VERSION >= 302) || (__INTEL_COMPILER >= 800) || defined(__clang__)
-# define expect(expr,value) (__builtin_expect ((expr),(value)) )
-#else
-# define expect(expr,value) (expr)
-#endif
-
-#define likely(expr) expect((expr) != 0, 1)
-#define unlikely(expr) expect((expr) != 0, 0)
-
-
-/**************************************
-* Memory routines
-**************************************/
-#include <stdlib.h> /* malloc, calloc, free */
-#define ALLOCATOR(n,s) calloc(n,s)
-#define FREEMEM free
-#include <string.h> /* memset, memcpy */
-#define MEM_INIT memset
-
-
-/**************************************
-* Basic Types
-**************************************/
-#if defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */
-# include <stdint.h>
- typedef uint8_t BYTE;
- typedef uint16_t U16;
- typedef uint32_t U32;
- typedef int32_t S32;
- typedef uint64_t U64;
-#else
- typedef unsigned char BYTE;
- typedef unsigned short U16;
- typedef unsigned int U32;
- typedef signed int S32;
- typedef unsigned long long U64;
-#endif
-
-
-/**************************************
-* Reading and writing into memory
-**************************************/
-#define STEPSIZE sizeof(size_t)
-
-static unsigned LZ4_64bits(void) { return sizeof(void*)==8; }
-
-static unsigned LZ4_isLittleEndian(void)
-{
- const union { U32 i; BYTE c[4]; } one = { 1 }; /* don't use static : performance detrimental */
- return one.c[0];
-}
-
-
-static U16 LZ4_read16(const void* memPtr)
-{
- U16 val16;
- memcpy(&val16, memPtr, 2);
- return val16;
-}
-
-static U16 LZ4_readLE16(const void* memPtr)
-{
- if (LZ4_isLittleEndian())
- {
- return LZ4_read16(memPtr);
- }
- else
- {
- const BYTE* p = (const BYTE*)memPtr;
- return (U16)((U16)p[0] + (p[1]<<8));
- }
-}
-
-static void LZ4_writeLE16(void* memPtr, U16 value)
-{
- if (LZ4_isLittleEndian())
- {
- memcpy(memPtr, &value, 2);
- }
- else
- {
- BYTE* p = (BYTE*)memPtr;
- p[0] = (BYTE) value;
- p[1] = (BYTE)(value>>8);
- }
-}
-
-static U32 LZ4_read32(const void* memPtr)
-{
- U32 val32;
- memcpy(&val32, memPtr, 4);
- return val32;
-}
-
-static U64 LZ4_read64(const void* memPtr)
-{
- U64 val64;
- memcpy(&val64, memPtr, 8);
- return val64;
-}
-
-static size_t LZ4_read_ARCH(const void* p)
-{
- if (LZ4_64bits())
- return (size_t)LZ4_read64(p);
- else
- return (size_t)LZ4_read32(p);
-}
-
-
-static void LZ4_copy4(void* dstPtr, const void* srcPtr) { memcpy(dstPtr, srcPtr, 4); }
-
-static void LZ4_copy8(void* dstPtr, const void* srcPtr) { memcpy(dstPtr, srcPtr, 8); }
-
-/* customized version of memcpy, which may overwrite up to 7 bytes beyond dstEnd */
-static void LZ4_wildCopy(void* dstPtr, const void* srcPtr, void* dstEnd)
-{
- BYTE* d = (BYTE*)dstPtr;
- const BYTE* s = (const BYTE*)srcPtr;
- BYTE* e = (BYTE*)dstEnd;
- do { LZ4_copy8(d,s); d+=8; s+=8; } while (d<e);
-}
-
-
-/**************************************
-* Common Constants
-**************************************/
-#define MINMATCH 4
-
-#define COPYLENGTH 8
-#define LASTLITERALS 5
-#define MFLIMIT (COPYLENGTH+MINMATCH)
-static const int LZ4_minLength = (MFLIMIT+1);
-
-#define KB *(1 <<10)
-#define MB *(1 <<20)
-#define GB *(1U<<30)
-
-#define MAXD_LOG 16
-#define MAX_DISTANCE ((1 << MAXD_LOG) - 1)
-
-#define ML_BITS 4
-#define ML_MASK ((1U<<ML_BITS)-1)
-#define RUN_BITS (8-ML_BITS)
-#define RUN_MASK ((1U<<RUN_BITS)-1)
-
-
-/**************************************
-* Common Utils
-**************************************/
-#define LZ4_STATIC_ASSERT(c) { enum { LZ4_static_assert = 1/(int)(!!(c)) }; } /* use only *after* variable declarations */
-
-
-/**************************************
-* Common functions
-**************************************/
-static unsigned LZ4_NbCommonBytes (register size_t val)
-{
- if (LZ4_isLittleEndian())
- {
- if (LZ4_64bits())
- {
-# if defined(_MSC_VER) && defined(_WIN64) && !defined(LZ4_FORCE_SW_BITCOUNT)
- unsigned long r = 0;
- _BitScanForward64( &r, (U64)val );
- return (int)(r>>3);
-# elif (defined(__clang__) || (LZ4_GCC_VERSION >= 304)) && !defined(LZ4_FORCE_SW_BITCOUNT)
- return (__builtin_ctzll((U64)val) >> 3);
-# else
- static const int DeBruijnBytePos[64] = { 0, 0, 0, 0, 0, 1, 1, 2, 0, 3, 1, 3, 1, 4, 2, 7, 0, 2, 3, 6, 1, 5, 3, 5, 1, 3, 4, 4, 2, 5, 6, 7, 7, 0, 1, 2, 3, 3, 4, 6, 2, 6, 5, 5, 3, 4, 5, 6, 7, 1, 2, 4, 6, 4, 4, 5, 7, 2, 6, 5, 7, 6, 7, 7 };
- return DeBruijnBytePos[((U64)((val & -(long long)val) * 0x0218A392CDABBD3FULL)) >> 58];
-# endif
- }
- else /* 32 bits */
- {
-# if defined(_MSC_VER) && !defined(LZ4_FORCE_SW_BITCOUNT)
- unsigned long r;
- _BitScanForward( &r, (U32)val );
- return (int)(r>>3);
-# elif (defined(__clang__) || (LZ4_GCC_VERSION >= 304)) && !defined(LZ4_FORCE_SW_BITCOUNT)
- return (__builtin_ctz((U32)val) >> 3);
-# else
- static const int DeBruijnBytePos[32] = { 0, 0, 3, 0, 3, 1, 3, 0, 3, 2, 2, 1, 3, 2, 0, 1, 3, 3, 1, 2, 2, 2, 2, 0, 3, 1, 2, 0, 1, 0, 1, 1 };
- return DeBruijnBytePos[((U32)((val & -(S32)val) * 0x077CB531U)) >> 27];
-# endif
- }
- }
- else /* Big Endian CPU */
- {
- if (LZ4_64bits())
- {
-# if defined(_MSC_VER) && defined(_WIN64) && !defined(LZ4_FORCE_SW_BITCOUNT)
- unsigned long r = 0;
- _BitScanReverse64( &r, val );
- return (unsigned)(r>>3);
-# elif (defined(__clang__) || (LZ4_GCC_VERSION >= 304)) && !defined(LZ4_FORCE_SW_BITCOUNT)
- return (__builtin_clzll((U64)val) >> 3);
-# else
- unsigned r;
- if (!(val>>32)) { r=4; } else { r=0; val>>=32; }
- if (!(val>>16)) { r+=2; val>>=8; } else { val>>=24; }
- r += (!val);
- return r;
-# endif
- }
- else /* 32 bits */
- {
-# if defined(_MSC_VER) && !defined(LZ4_FORCE_SW_BITCOUNT)
- unsigned long r = 0;
- _BitScanReverse( &r, (unsigned long)val );
- return (unsigned)(r>>3);
-# elif (defined(__clang__) || (LZ4_GCC_VERSION >= 304)) && !defined(LZ4_FORCE_SW_BITCOUNT)
- return (__builtin_clz((U32)val) >> 3);
-# else
- unsigned r;
- if (!(val>>16)) { r=2; val>>=8; } else { r=0; val>>=24; }
- r += (!val);
- return r;
-# endif
- }
- }
-}
-
-static unsigned LZ4_count(const BYTE* pIn, const BYTE* pMatch, const BYTE* pInLimit)
-{
- const BYTE* const pStart = pIn;
-
- while (likely(pIn<pInLimit-(STEPSIZE-1)))
- {
- size_t diff = LZ4_read_ARCH(pMatch) ^ LZ4_read_ARCH(pIn);
- if (!diff) { pIn+=STEPSIZE; pMatch+=STEPSIZE; continue; }
- pIn += LZ4_NbCommonBytes(diff);
- return (unsigned)(pIn - pStart);
- }
-
- if (LZ4_64bits()) if ((pIn<(pInLimit-3)) && (LZ4_read32(pMatch) == LZ4_read32(pIn))) { pIn+=4; pMatch+=4; }
- if ((pIn<(pInLimit-1)) && (LZ4_read16(pMatch) == LZ4_read16(pIn))) { pIn+=2; pMatch+=2; }
- if ((pIn<pInLimit) && (*pMatch == *pIn)) pIn++;
- return (unsigned)(pIn - pStart);
-}
-
-
-#ifndef LZ4_COMMONDEFS_ONLY
-/**************************************
-* Local Constants
-**************************************/
-#define LZ4_HASHLOG (LZ4_MEMORY_USAGE-2)
-#define HASHTABLESIZE (1 << LZ4_MEMORY_USAGE)
-#define HASH_SIZE_U32 (1 << LZ4_HASHLOG) /* required as macro for static allocation */
-
-static const int LZ4_64Klimit = ((64 KB) + (MFLIMIT-1));
-static const U32 LZ4_skipTrigger = 6; /* Increase this value ==> compression run slower on incompressible data */
-
-
-/**************************************
-* Local Structures and types
-**************************************/
-typedef struct {
- U32 hashTable[HASH_SIZE_U32];
- U32 currentOffset;
- U32 initCheck;
- const BYTE* dictionary;
- BYTE* bufferStart; /* obsolete, used for slideInputBuffer */
- U32 dictSize;
-} LZ4_stream_t_internal;
-
-typedef enum { notLimited = 0, limitedOutput = 1 } limitedOutput_directive;
-typedef enum { byPtr, byU32, byU16 } tableType_t;
-
-typedef enum { noDict = 0, withPrefix64k, usingExtDict } dict_directive;
-typedef enum { noDictIssue = 0, dictSmall } dictIssue_directive;
-
-typedef enum { endOnOutputSize = 0, endOnInputSize = 1 } endCondition_directive;
-typedef enum { full = 0, partial = 1 } earlyEnd_directive;
-
-
-/**************************************
-* Local Utils
-**************************************/
-int LZ4_versionNumber (void) { return LZ4_VERSION_NUMBER; }
-int LZ4_compressBound(int isize) { return LZ4_COMPRESSBOUND(isize); }
-int LZ4_sizeofState() { return LZ4_STREAMSIZE; }
-
-
-
-/********************************
-* Compression functions
-********************************/
-
-static U32 LZ4_hashSequence(U32 sequence, tableType_t const tableType)
-{
- if (tableType == byU16)
- return (((sequence) * 2654435761U) >> ((MINMATCH*8)-(LZ4_HASHLOG+1)));
- else
- return (((sequence) * 2654435761U) >> ((MINMATCH*8)-LZ4_HASHLOG));
-}
-
-static const U64 prime5bytes = 889523592379ULL;
-static U32 LZ4_hashSequence64(size_t sequence, tableType_t const tableType)
-{
- const U32 hashLog = (tableType == byU16) ? LZ4_HASHLOG+1 : LZ4_HASHLOG;
- const U32 hashMask = (1<<hashLog) - 1;
- return ((sequence * prime5bytes) >> (40 - hashLog)) & hashMask;
-}
-
-static U32 LZ4_hashSequenceT(size_t sequence, tableType_t const tableType)
-{
- if (LZ4_64bits())
- return LZ4_hashSequence64(sequence, tableType);
- return LZ4_hashSequence((U32)sequence, tableType);
-}
-
-static U32 LZ4_hashPosition(const void* p, tableType_t tableType) { return LZ4_hashSequenceT(LZ4_read_ARCH(p), tableType); }
-
-static void LZ4_putPositionOnHash(const BYTE* p, U32 h, void* tableBase, tableType_t const tableType, const BYTE* srcBase)
-{
- switch (tableType)
- {
- case byPtr: { const BYTE** hashTable = (const BYTE**)tableBase; hashTable[h] = p; return; }
- case byU32: { U32* hashTable = (U32*) tableBase; hashTable[h] = (U32)(p-srcBase); return; }
- case byU16: { U16* hashTable = (U16*) tableBase; hashTable[h] = (U16)(p-srcBase); return; }
- }
-}
-
-static void LZ4_putPosition(const BYTE* p, void* tableBase, tableType_t tableType, const BYTE* srcBase)
-{
- U32 h = LZ4_hashPosition(p, tableType);
- LZ4_putPositionOnHash(p, h, tableBase, tableType, srcBase);
-}
-
-static const BYTE* LZ4_getPositionOnHash(U32 h, void* tableBase, tableType_t tableType, const BYTE* srcBase)
-{
- if (tableType == byPtr) { const BYTE** hashTable = (const BYTE**) tableBase; return hashTable[h]; }
- if (tableType == byU32) { U32* hashTable = (U32*) tableBase; return hashTable[h] + srcBase; }
- { U16* hashTable = (U16*) tableBase; return hashTable[h] + srcBase; } /* default, to ensure a return */
-}
-
-static const BYTE* LZ4_getPosition(const BYTE* p, void* tableBase, tableType_t tableType, const BYTE* srcBase)
-{
- U32 h = LZ4_hashPosition(p, tableType);
- return LZ4_getPositionOnHash(h, tableBase, tableType, srcBase);
-}
-
-FORCE_INLINE int LZ4_compress_generic(
- void* const ctx,
- const char* const source,
- char* const dest,
- const int inputSize,
- const int maxOutputSize,
- const limitedOutput_directive outputLimited,
- const tableType_t tableType,
- const dict_directive dict,
- const dictIssue_directive dictIssue,
- const U32 acceleration)
-{
- LZ4_stream_t_internal* const dictPtr = (LZ4_stream_t_internal*)ctx;
-
- const BYTE* ip = (const BYTE*) source;
- const BYTE* base;
- const BYTE* lowLimit;
- const BYTE* const lowRefLimit = ip - dictPtr->dictSize;
- const BYTE* const dictionary = dictPtr->dictionary;
- const BYTE* const dictEnd = dictionary + dictPtr->dictSize;
- const size_t dictDelta = dictEnd - (const BYTE*)source;
- const BYTE* anchor = (const BYTE*) source;
- const BYTE* const iend = ip + inputSize;
- const BYTE* const mflimit = iend - MFLIMIT;
- const BYTE* const matchlimit = iend - LASTLITERALS;
-
- BYTE* op = (BYTE*) dest;
- BYTE* const olimit = op + maxOutputSize;
-
- U32 forwardH;
- size_t refDelta=0;
-
- /* Init conditions */
- if ((U32)inputSize > (U32)LZ4_MAX_INPUT_SIZE) return 0; /* Unsupported input size, too large (or negative) */
- switch(dict)
- {
- case noDict:
- default:
- base = (const BYTE*)source;
- lowLimit = (const BYTE*)source;
- break;
- case withPrefix64k:
- base = (const BYTE*)source - dictPtr->currentOffset;
- lowLimit = (const BYTE*)source - dictPtr->dictSize;
- break;
- case usingExtDict:
- base = (const BYTE*)source - dictPtr->currentOffset;
- lowLimit = (const BYTE*)source;
- break;
- }
- if ((tableType == byU16) && (inputSize>=LZ4_64Klimit)) return 0; /* Size too large (not within 64K limit) */
- if (inputSize<LZ4_minLength) goto _last_literals; /* Input too small, no compression (all literals) */
-
- /* First Byte */
- LZ4_putPosition(ip, ctx, tableType, base);
- ip++; forwardH = LZ4_hashPosition(ip, tableType);
-
- /* Main Loop */
- for ( ; ; )
- {
- const BYTE* match;
- BYTE* token;
- {
- const BYTE* forwardIp = ip;
- unsigned step = 1;
- unsigned searchMatchNb = acceleration << LZ4_skipTrigger;
-
- /* Find a match */
- do {
- U32 h = forwardH;
- ip = forwardIp;
- forwardIp += step;
- step = (searchMatchNb++ >> LZ4_skipTrigger);
-
- if (unlikely(forwardIp > mflimit)) goto _last_literals;
-
- match = LZ4_getPositionOnHash(h, ctx, tableType, base);
- if (dict==usingExtDict)
- {
- if (match<(const BYTE*)source)
- {
- refDelta = dictDelta;
- lowLimit = dictionary;
- }
- else
- {
- refDelta = 0;
- lowLimit = (const BYTE*)source;
- }
- }
- forwardH = LZ4_hashPosition(forwardIp, tableType);
- LZ4_putPositionOnHash(ip, h, ctx, tableType, base);
-
- } while ( ((dictIssue==dictSmall) ? (match < lowRefLimit) : 0)
- || ((tableType==byU16) ? 0 : (match + MAX_DISTANCE < ip))
- || (LZ4_read32(match+refDelta) != LZ4_read32(ip)) );
- }
-
- /* Catch up */
- while ((ip>anchor) && (match+refDelta > lowLimit) && (unlikely(ip[-1]==match[refDelta-1]))) { ip--; match--; }
-
- {
- /* Encode Literal length */
- unsigned litLength = (unsigned)(ip - anchor);
- token = op++;
- if ((outputLimited) && (unlikely(op + litLength + (2 + 1 + LASTLITERALS) + (litLength/255) > olimit)))
- return 0; /* Check output limit */
- if (litLength>=RUN_MASK)
- {
- int len = (int)litLength-RUN_MASK;
- *token=(RUN_MASK<<ML_BITS);
- for(; len >= 255 ; len-=255) *op++ = 255;
- *op++ = (BYTE)len;
- }
- else *token = (BYTE)(litLength<<ML_BITS);
-
- /* Copy Literals */
- LZ4_wildCopy(op, anchor, op+litLength);
- op+=litLength;
- }
-
-_next_match:
- /* Encode Offset */
- LZ4_writeLE16(op, (U16)(ip-match)); op+=2;
-
- /* Encode MatchLength */
- {
- unsigned matchLength;
-
- if ((dict==usingExtDict) && (lowLimit==dictionary))
- {
- const BYTE* limit;
- match += refDelta;
- limit = ip + (dictEnd-match);
- if (limit > matchlimit) limit = matchlimit;
- matchLength = LZ4_count(ip+MINMATCH, match+MINMATCH, limit);
- ip += MINMATCH + matchLength;
- if (ip==limit)
- {
- unsigned more = LZ4_count(ip, (const BYTE*)source, matchlimit);
- matchLength += more;
- ip += more;
- }
- }
- else
- {
- matchLength = LZ4_count(ip+MINMATCH, match+MINMATCH, matchlimit);
- ip += MINMATCH + matchLength;
- }
-
- if ((outputLimited) && (unlikely(op + (1 + LASTLITERALS) + (matchLength>>8) > olimit)))
- return 0; /* Check output limit */
- if (matchLength>=ML_MASK)
- {
- *token += ML_MASK;
- matchLength -= ML_MASK;
- for (; matchLength >= 510 ; matchLength-=510) { *op++ = 255; *op++ = 255; }
- if (matchLength >= 255) { matchLength-=255; *op++ = 255; }
- *op++ = (BYTE)matchLength;
- }
- else *token += (BYTE)(matchLength);
- }
-
- anchor = ip;
-
- /* Test end of chunk */
- if (ip > mflimit) break;
-
- /* Fill table */
- LZ4_putPosition(ip-2, ctx, tableType, base);
-
- /* Test next position */
- match = LZ4_getPosition(ip, ctx, tableType, base);
- if (dict==usingExtDict)
- {
- if (match<(const BYTE*)source)
- {
- refDelta = dictDelta;
- lowLimit = dictionary;
- }
- else
- {
- refDelta = 0;
- lowLimit = (const BYTE*)source;
- }
- }
- LZ4_putPosition(ip, ctx, tableType, base);
- if ( ((dictIssue==dictSmall) ? (match>=lowRefLimit) : 1)
- && (match+MAX_DISTANCE>=ip)
- && (LZ4_read32(match+refDelta)==LZ4_read32(ip)) )
- { token=op++; *token=0; goto _next_match; }
-
- /* Prepare next loop */
- forwardH = LZ4_hashPosition(++ip, tableType);
- }
-
-_last_literals:
- /* Encode Last Literals */
- {
- const size_t lastRun = (size_t)(iend - anchor);
- if ((outputLimited) && ((op - (BYTE*)dest) + lastRun + 1 + ((lastRun+255-RUN_MASK)/255) > (U32)maxOutputSize))
- return 0; /* Check output limit */
- if (lastRun >= RUN_MASK)
- {
- size_t accumulator = lastRun - RUN_MASK;
- *op++ = RUN_MASK << ML_BITS;
- for(; accumulator >= 255 ; accumulator-=255) *op++ = 255;
- *op++ = (BYTE) accumulator;
- }
- else
- {
- *op++ = (BYTE)(lastRun<<ML_BITS);
- }
- memcpy(op, anchor, lastRun);
- op += lastRun;
- }
-
- /* End */
- return (int) (((char*)op)-dest);
-}
-
-
-int LZ4_compress_fast_extState(void* state, const char* source, char* dest, int inputSize, int maxOutputSize, int acceleration)
-{
- LZ4_resetStream((LZ4_stream_t*)state);
- if (acceleration < 1) acceleration = ACCELERATION_DEFAULT;
-
- if (maxOutputSize >= LZ4_compressBound(inputSize))
- {
- if (inputSize < LZ4_64Klimit)
- return LZ4_compress_generic(state, source, dest, inputSize, 0, notLimited, byU16, noDict, noDictIssue, acceleration);
- else
- return LZ4_compress_generic(state, source, dest, inputSize, 0, notLimited, LZ4_64bits() ? byU32 : byPtr, noDict, noDictIssue, acceleration);
- }
- else
- {
- if (inputSize < LZ4_64Klimit)
- return LZ4_compress_generic(state, source, dest, inputSize, maxOutputSize, limitedOutput, byU16, noDict, noDictIssue, acceleration);
- else
- return LZ4_compress_generic(state, source, dest, inputSize, maxOutputSize, limitedOutput, LZ4_64bits() ? byU32 : byPtr, noDict, noDictIssue, acceleration);
- }
-}
-
-
-int LZ4_compress_fast(const char* source, char* dest, int inputSize, int maxOutputSize, int acceleration)
-{
-#if (HEAPMODE)
- void* ctxPtr = ALLOCATOR(1, sizeof(LZ4_stream_t)); /* malloc-calloc always properly aligned */
-#else
- LZ4_stream_t ctx;
- void* ctxPtr = &ctx;
-#endif
-
- int result = LZ4_compress_fast_extState(ctxPtr, source, dest, inputSize, maxOutputSize, acceleration);
-
-#if (HEAPMODE)
- FREEMEM(ctxPtr);
-#endif
- return result;
-}
-
-
-int LZ4_compress_default(const char* source, char* dest, int inputSize, int maxOutputSize)
-{
- return LZ4_compress_fast(source, dest, inputSize, maxOutputSize, 1);
-}
-
-
-/* hidden debug function */
-/* strangely enough, gcc generates faster code when this function is uncommented, even if unused */
-int LZ4_compress_fast_force(const char* source, char* dest, int inputSize, int maxOutputSize, int acceleration)
-{
- LZ4_stream_t ctx;
-
- LZ4_resetStream(&ctx);
-
- if (inputSize < LZ4_64Klimit)
- return LZ4_compress_generic(&ctx, source, dest, inputSize, maxOutputSize, limitedOutput, byU16, noDict, noDictIssue, acceleration);
- else
- return LZ4_compress_generic(&ctx, source, dest, inputSize, maxOutputSize, limitedOutput, LZ4_64bits() ? byU32 : byPtr, noDict, noDictIssue, acceleration);
-}
-
-
-/********************************
-* destSize variant
-********************************/
-
-static int LZ4_compress_destSize_generic(
- void* const ctx,
- const char* const src,
- char* const dst,
- int* const srcSizePtr,
- const int targetDstSize,
- const tableType_t tableType)
-{
- const BYTE* ip = (const BYTE*) src;
- const BYTE* base = (const BYTE*) src;
- const BYTE* lowLimit = (const BYTE*) src;
- const BYTE* anchor = ip;
- const BYTE* const iend = ip + *srcSizePtr;
- const BYTE* const mflimit = iend - MFLIMIT;
- const BYTE* const matchlimit = iend - LASTLITERALS;
-
- BYTE* op = (BYTE*) dst;
- BYTE* const oend = op + targetDstSize;
- BYTE* const oMaxLit = op + targetDstSize - 2 /* offset */ - 8 /* because 8+MINMATCH==MFLIMIT */ - 1 /* token */;
- BYTE* const oMaxMatch = op + targetDstSize - (LASTLITERALS + 1 /* token */);
- BYTE* const oMaxSeq = oMaxLit - 1 /* token */;
-
- U32 forwardH;
-
-
- /* Init conditions */
- if (targetDstSize < 1) return 0; /* Impossible to store anything */
- if ((U32)*srcSizePtr > (U32)LZ4_MAX_INPUT_SIZE) return 0; /* Unsupported input size, too large (or negative) */
- if ((tableType == byU16) && (*srcSizePtr>=LZ4_64Klimit)) return 0; /* Size too large (not within 64K limit) */
- if (*srcSizePtr<LZ4_minLength) goto _last_literals; /* Input too small, no compression (all literals) */
-
- /* First Byte */
- *srcSizePtr = 0;
- LZ4_putPosition(ip, ctx, tableType, base);
- ip++; forwardH = LZ4_hashPosition(ip, tableType);
-
- /* Main Loop */
- for ( ; ; )
- {
- const BYTE* match;
- BYTE* token;
- {
- const BYTE* forwardIp = ip;
- unsigned step = 1;
- unsigned searchMatchNb = 1 << LZ4_skipTrigger;
-
- /* Find a match */
- do {
- U32 h = forwardH;
- ip = forwardIp;
- forwardIp += step;
- step = (searchMatchNb++ >> LZ4_skipTrigger);
-
- if (unlikely(forwardIp > mflimit))
- goto _last_literals;
-
- match = LZ4_getPositionOnHash(h, ctx, tableType, base);
- forwardH = LZ4_hashPosition(forwardIp, tableType);
- LZ4_putPositionOnHash(ip, h, ctx, tableType, base);
-
- } while ( ((tableType==byU16) ? 0 : (match + MAX_DISTANCE < ip))
- || (LZ4_read32(match) != LZ4_read32(ip)) );
- }
-
- /* Catch up */
- while ((ip>anchor) && (match > lowLimit) && (unlikely(ip[-1]==match[-1]))) { ip--; match--; }
-
- {
- /* Encode Literal length */
- unsigned litLength = (unsigned)(ip - anchor);
- token = op++;
- if (op + ((litLength+240)/255) + litLength > oMaxLit)
- {
- /* Not enough space for a last match */
- op--;
- goto _last_literals;
- }
- if (litLength>=RUN_MASK)
- {
- unsigned len = litLength - RUN_MASK;
- *token=(RUN_MASK<<ML_BITS);
- for(; len >= 255 ; len-=255) *op++ = 255;
- *op++ = (BYTE)len;
- }
- else *token = (BYTE)(litLength<<ML_BITS);
-
- /* Copy Literals */
- LZ4_wildCopy(op, anchor, op+litLength);
- op += litLength;
- }
-
-_next_match:
- /* Encode Offset */
- LZ4_writeLE16(op, (U16)(ip-match)); op+=2;
-
- /* Encode MatchLength */
- {
- size_t matchLength;
-
- matchLength = LZ4_count(ip+MINMATCH, match+MINMATCH, matchlimit);
-
- if (op + ((matchLength+240)/255) > oMaxMatch)
- {
- /* Match description too long : reduce it */
- matchLength = (15-1) + (oMaxMatch-op) * 255;
- }
- //printf("offset %5i, matchLength%5i \n", (int)(ip-match), matchLength + MINMATCH);
- ip += MINMATCH + matchLength;
-
- if (matchLength>=ML_MASK)
- {
- *token += ML_MASK;
- matchLength -= ML_MASK;
- while (matchLength >= 255) { matchLength-=255; *op++ = 255; }
- *op++ = (BYTE)matchLength;
- }
- else *token += (BYTE)(matchLength);
- }
-
- anchor = ip;
-
- /* Test end of block */
- if (ip > mflimit) break;
- if (op > oMaxSeq) break;
-
- /* Fill table */
- LZ4_putPosition(ip-2, ctx, tableType, base);
-
- /* Test next position */
- match = LZ4_getPosition(ip, ctx, tableType, base);
- LZ4_putPosition(ip, ctx, tableType, base);
- if ( (match+MAX_DISTANCE>=ip)
- && (LZ4_read32(match)==LZ4_read32(ip)) )
- { token=op++; *token=0; goto _next_match; }
-
- /* Prepare next loop */
- forwardH = LZ4_hashPosition(++ip, tableType);
- }
-
-_last_literals:
- /* Encode Last Literals */
- {
- size_t lastRunSize = (size_t)(iend - anchor);
- if (op + 1 /* token */ + ((lastRunSize+240)/255) /* litLength */ + lastRunSize /* literals */ > oend)
- {
- /* adapt lastRunSize to fill 'dst' */
- lastRunSize = (oend-op) - 1;
- lastRunSize -= (lastRunSize+240)/255;
- }
- ip = anchor + lastRunSize;
-
- if (lastRunSize >= RUN_MASK)
- {
- size_t accumulator = lastRunSize - RUN_MASK;
- *op++ = RUN_MASK << ML_BITS;
- for(; accumulator >= 255 ; accumulator-=255) *op++ = 255;
- *op++ = (BYTE) accumulator;
- }
- else
- {
- *op++ = (BYTE)(lastRunSize<<ML_BITS);
- }
- memcpy(op, anchor, lastRunSize);
- op += lastRunSize;
- }
-
- /* End */
- *srcSizePtr = (int) (((const char*)ip)-src);
- return (int) (((char*)op)-dst);
-}
-
-
-static int LZ4_compress_destSize_extState (void* state, const char* src, char* dst, int* srcSizePtr, int targetDstSize)
-{
- LZ4_resetStream((LZ4_stream_t*)state);
-
- if (targetDstSize >= LZ4_compressBound(*srcSizePtr)) /* compression success is guaranteed */
- {
- return LZ4_compress_fast_extState(state, src, dst, *srcSizePtr, targetDstSize, 1);
- }
- else
- {
- if (*srcSizePtr < LZ4_64Klimit)
- return LZ4_compress_destSize_generic(state, src, dst, srcSizePtr, targetDstSize, byU16);
- else
- return LZ4_compress_destSize_generic(state, src, dst, srcSizePtr, targetDstSize, LZ4_64bits() ? byU32 : byPtr);
- }
-}
-
-
-int LZ4_compress_destSize(const char* src, char* dst, int* srcSizePtr, int targetDstSize)
-{
-#if (HEAPMODE)
- void* ctx = ALLOCATOR(1, sizeof(LZ4_stream_t)); /* malloc-calloc always properly aligned */
-#else
- LZ4_stream_t ctxBody;
- void* ctx = &ctxBody;
-#endif
-
- int result = LZ4_compress_destSize_extState(ctx, src, dst, srcSizePtr, targetDstSize);
-
-#if (HEAPMODE)
- FREEMEM(ctx);
-#endif
- return result;
-}
-
-
-
-/********************************
-* Streaming functions
-********************************/
-
-LZ4_stream_t* LZ4_createStream(void)
-{
- LZ4_stream_t* lz4s = (LZ4_stream_t*)ALLOCATOR(8, LZ4_STREAMSIZE_U64);
- LZ4_STATIC_ASSERT(LZ4_STREAMSIZE >= sizeof(LZ4_stream_t_internal)); /* A compilation error here means LZ4_STREAMSIZE is not large enough */
- LZ4_resetStream(lz4s);
- return lz4s;
-}
-
-void LZ4_resetStream (LZ4_stream_t* LZ4_stream)
-{
- MEM_INIT(LZ4_stream, 0, sizeof(LZ4_stream_t));
-}
-
-int LZ4_freeStream (LZ4_stream_t* LZ4_stream)
-{
- FREEMEM(LZ4_stream);
- return (0);
-}
-
-
-#define HASH_UNIT sizeof(size_t)
-int LZ4_loadDict (LZ4_stream_t* LZ4_dict, const char* dictionary, int dictSize)
-{
- LZ4_stream_t_internal* dict = (LZ4_stream_t_internal*) LZ4_dict;
- const BYTE* p = (const BYTE*)dictionary;
- const BYTE* const dictEnd = p + dictSize;
- const BYTE* base;
-
- if ((dict->initCheck) || (dict->currentOffset > 1 GB)) /* Uninitialized structure, or reuse overflow */
- LZ4_resetStream(LZ4_dict);
-
- if (dictSize < (int)HASH_UNIT)
- {
- dict->dictionary = NULL;
- dict->dictSize = 0;
- return 0;
- }
-
- if ((dictEnd - p) > 64 KB) p = dictEnd - 64 KB;
- dict->currentOffset += 64 KB;
- base = p - dict->currentOffset;
- dict->dictionary = p;
- dict->dictSize = (U32)(dictEnd - p);
- dict->currentOffset += dict->dictSize;
-
- while (p <= dictEnd-HASH_UNIT)
- {
- LZ4_putPosition(p, dict->hashTable, byU32, base);
- p+=3;
- }
-
- return dict->dictSize;
-}
-
-
-static void LZ4_renormDictT(LZ4_stream_t_internal* LZ4_dict, const BYTE* src)
-{
- if ((LZ4_dict->currentOffset > 0x80000000) ||
- ((size_t)LZ4_dict->currentOffset > (size_t)src)) /* address space overflow */
- {
- /* rescale hash table */
- U32 delta = LZ4_dict->currentOffset - 64 KB;
- const BYTE* dictEnd = LZ4_dict->dictionary + LZ4_dict->dictSize;
- int i;
- for (i=0; i<HASH_SIZE_U32; i++)
- {
- if (LZ4_dict->hashTable[i] < delta) LZ4_dict->hashTable[i]=0;
- else LZ4_dict->hashTable[i] -= delta;
- }
- LZ4_dict->currentOffset = 64 KB;
- if (LZ4_dict->dictSize > 64 KB) LZ4_dict->dictSize = 64 KB;
- LZ4_dict->dictionary = dictEnd - LZ4_dict->dictSize;
- }
-}
-
-
-int LZ4_compress_fast_continue (LZ4_stream_t* LZ4_stream, const char* source, char* dest, int inputSize, int maxOutputSize, int acceleration)
-{
- LZ4_stream_t_internal* streamPtr = (LZ4_stream_t_internal*)LZ4_stream;
- const BYTE* const dictEnd = streamPtr->dictionary + streamPtr->dictSize;
-
- const BYTE* smallest = (const BYTE*) source;
- if (streamPtr->initCheck) return 0; /* Uninitialized structure detected */
- if ((streamPtr->dictSize>0) && (smallest>dictEnd)) smallest = dictEnd;
- LZ4_renormDictT(streamPtr, smallest);
- if (acceleration < 1) acceleration = ACCELERATION_DEFAULT;
-
- /* Check overlapping input/dictionary space */
- {
- const BYTE* sourceEnd = (const BYTE*) source + inputSize;
- if ((sourceEnd > streamPtr->dictionary) && (sourceEnd < dictEnd))
- {
- streamPtr->dictSize = (U32)(dictEnd - sourceEnd);
- if (streamPtr->dictSize > 64 KB) streamPtr->dictSize = 64 KB;
- if (streamPtr->dictSize < 4) streamPtr->dictSize = 0;
- streamPtr->dictionary = dictEnd - streamPtr->dictSize;
- }
- }
-
- /* prefix mode : source data follows dictionary */
- if (dictEnd == (const BYTE*)source)
- {
- int result;
- if ((streamPtr->dictSize < 64 KB) && (streamPtr->dictSize < streamPtr->currentOffset))
- result = LZ4_compress_generic(LZ4_stream, source, dest, inputSize, maxOutputSize, limitedOutput, byU32, withPrefix64k, dictSmall, acceleration);
- else
- result = LZ4_compress_generic(LZ4_stream, source, dest, inputSize, maxOutputSize, limitedOutput, byU32, withPrefix64k, noDictIssue, acceleration);
- streamPtr->dictSize += (U32)inputSize;
- streamPtr->currentOffset += (U32)inputSize;
- return result;
- }
-
- /* external dictionary mode */
- {
- int result;
- if ((streamPtr->dictSize < 64 KB) && (streamPtr->dictSize < streamPtr->currentOffset))
- result = LZ4_compress_generic(LZ4_stream, source, dest, inputSize, maxOutputSize, limitedOutput, byU32, usingExtDict, dictSmall, acceleration);
- else
- result = LZ4_compress_generic(LZ4_stream, source, dest, inputSize, maxOutputSize, limitedOutput, byU32, usingExtDict, noDictIssue, acceleration);
- streamPtr->dictionary = (const BYTE*)source;
- streamPtr->dictSize = (U32)inputSize;
- streamPtr->currentOffset += (U32)inputSize;
- return result;
- }
-}
-
-
-/* Hidden debug function, to force external dictionary mode */
-int LZ4_compress_forceExtDict (LZ4_stream_t* LZ4_dict, const char* source, char* dest, int inputSize)
-{
- LZ4_stream_t_internal* streamPtr = (LZ4_stream_t_internal*)LZ4_dict;
- int result;
- const BYTE* const dictEnd = streamPtr->dictionary + streamPtr->dictSize;
-
- const BYTE* smallest = dictEnd;
- if (smallest > (const BYTE*) source) smallest = (const BYTE*) source;
- LZ4_renormDictT((LZ4_stream_t_internal*)LZ4_dict, smallest);
-
- result = LZ4_compress_generic(LZ4_dict, source, dest, inputSize, 0, notLimited, byU32, usingExtDict, noDictIssue, 1);
-
- streamPtr->dictionary = (const BYTE*)source;
- streamPtr->dictSize = (U32)inputSize;
- streamPtr->currentOffset += (U32)inputSize;
-
- return result;
-}
-
-
-int LZ4_saveDict (LZ4_stream_t* LZ4_dict, char* safeBuffer, int dictSize)
-{
- LZ4_stream_t_internal* dict = (LZ4_stream_t_internal*) LZ4_dict;
- const BYTE* previousDictEnd = dict->dictionary + dict->dictSize;
-
- if ((U32)dictSize > 64 KB) dictSize = 64 KB; /* useless to define a dictionary > 64 KB */
- if ((U32)dictSize > dict->dictSize) dictSize = dict->dictSize;
-
- memmove(safeBuffer, previousDictEnd - dictSize, dictSize);
-
- dict->dictionary = (const BYTE*)safeBuffer;
- dict->dictSize = (U32)dictSize;
-
- return dictSize;
-}
-
-
-
-/*******************************
-* Decompression functions
-*******************************/
-/*
- * This generic decompression function cover all use cases.
- * It shall be instantiated several times, using different sets of directives
- * Note that it is essential this generic function is really inlined,
- * in order to remove useless branches during compilation optimization.
- */
-FORCE_INLINE int LZ4_decompress_generic(
- const char* const source,
- char* const dest,
- int inputSize,
- int outputSize, /* If endOnInput==endOnInputSize, this value is the max size of Output Buffer. */
-
- int endOnInput, /* endOnOutputSize, endOnInputSize */
- int partialDecoding, /* full, partial */
- int targetOutputSize, /* only used if partialDecoding==partial */
- int dict, /* noDict, withPrefix64k, usingExtDict */
- const BYTE* const lowPrefix, /* == dest if dict == noDict */
- const BYTE* const dictStart, /* only if dict==usingExtDict */
- const size_t dictSize /* note : = 0 if noDict */
- )
-{
- /* Local Variables */
- const BYTE* ip = (const BYTE*) source;
- const BYTE* const iend = ip + inputSize;
-
- BYTE* op = (BYTE*) dest;
- BYTE* const oend = op + outputSize;
- BYTE* cpy;
- BYTE* oexit = op + targetOutputSize;
- const BYTE* const lowLimit = lowPrefix - dictSize;
-
- const BYTE* const dictEnd = (const BYTE*)dictStart + dictSize;
- const size_t dec32table[] = {4, 1, 2, 1, 4, 4, 4, 4};
- const size_t dec64table[] = {0, 0, 0, (size_t)-1, 0, 1, 2, 3};
-
- const int safeDecode = (endOnInput==endOnInputSize);
- const int checkOffset = ((safeDecode) && (dictSize < (int)(64 KB)));
-
-
- /* Special cases */
- if ((partialDecoding) && (oexit> oend-MFLIMIT)) oexit = oend-MFLIMIT; /* targetOutputSize too high => decode everything */
- if ((endOnInput) && (unlikely(outputSize==0))) return ((inputSize==1) && (*ip==0)) ? 0 : -1; /* Empty output buffer */
- if ((!endOnInput) && (unlikely(outputSize==0))) return (*ip==0?1:-1);
-
-
- /* Main Loop */
- while (1)
- {
- unsigned token;
- size_t length;
- const BYTE* match;
-
- /* get literal length */
- token = *ip++;
- if ((length=(token>>ML_BITS)) == RUN_MASK)
- {
- unsigned s;
- do
- {
- s = *ip++;
- length += s;
- }
- while (likely((endOnInput)?ip<iend-RUN_MASK:1) && (s==255));
- if ((safeDecode) && unlikely((size_t)(op+length)<(size_t)(op))) goto _output_error; /* overflow detection */
- if ((safeDecode) && unlikely((size_t)(ip+length)<(size_t)(ip))) goto _output_error; /* overflow detection */
- }
-
- /* copy literals */
- cpy = op+length;
- if (((endOnInput) && ((cpy>(partialDecoding?oexit:oend-MFLIMIT)) || (ip+length>iend-(2+1+LASTLITERALS))) )
- || ((!endOnInput) && (cpy>oend-COPYLENGTH)))
- {
- if (partialDecoding)
- {
- if (cpy > oend) goto _output_error; /* Error : write attempt beyond end of output buffer */
- if ((endOnInput) && (ip+length > iend)) goto _output_error; /* Error : read attempt beyond end of input buffer */
- }
- else
- {
- if ((!endOnInput) && (cpy != oend)) goto _output_error; /* Error : block decoding must stop exactly there */
- if ((endOnInput) && ((ip+length != iend) || (cpy > oend))) goto _output_error; /* Error : input must be consumed */
- }
- memcpy(op, ip, length);
- ip += length;
- op += length;
- break; /* Necessarily EOF, due to parsing restrictions */
- }
- LZ4_wildCopy(op, ip, cpy);
- ip += length; op = cpy;
-
- /* get offset */
- match = cpy - LZ4_readLE16(ip); ip+=2;
- if ((checkOffset) && (unlikely(match < lowLimit))) goto _output_error; /* Error : offset outside destination buffer */
-
- /* get matchlength */
- length = token & ML_MASK;
- if (length == ML_MASK)
- {
- unsigned s;
- do
- {
- if ((endOnInput) && (ip > iend-LASTLITERALS)) goto _output_error;
- s = *ip++;
- length += s;
- } while (s==255);
- if ((safeDecode) && unlikely((size_t)(op+length)<(size_t)op)) goto _output_error; /* overflow detection */
- }
- length += MINMATCH;
-
- /* check external dictionary */
- if ((dict==usingExtDict) && (match < lowPrefix))
- {
- if (unlikely(op+length > oend-LASTLITERALS)) goto _output_error; /* doesn't respect parsing restriction */
-
- if (length <= (size_t)(lowPrefix-match))
- {
- /* match can be copied as a single segment from external dictionary */
- match = dictEnd - (lowPrefix-match);
- memmove(op, match, length); op += length;
- }
- else
- {
- /* match encompass external dictionary and current segment */
- size_t copySize = (size_t)(lowPrefix-match);
- memcpy(op, dictEnd - copySize, copySize);
- op += copySize;
- copySize = length - copySize;
- if (copySize > (size_t)(op-lowPrefix)) /* overlap within current segment */
- {
- BYTE* const endOfMatch = op + copySize;
- const BYTE* copyFrom = lowPrefix;
- while (op < endOfMatch) *op++ = *copyFrom++;
- }
- else
- {
- memcpy(op, lowPrefix, copySize);
- op += copySize;
- }
- }
- continue;
- }
-
- /* copy repeated sequence */
- cpy = op + length;
- if (unlikely((op-match)<8))
- {
- const size_t dec64 = dec64table[op-match];
- op[0] = match[0];
- op[1] = match[1];
- op[2] = match[2];
- op[3] = match[3];
- match += dec32table[op-match];
- LZ4_copy4(op+4, match);
- op += 8; match -= dec64;
- } else { LZ4_copy8(op, match); op+=8; match+=8; }
-
- if (unlikely(cpy>oend-12))
- {
- if (cpy > oend-LASTLITERALS) goto _output_error; /* Error : last LASTLITERALS bytes must be literals */
- if (op < oend-8)
- {
- LZ4_wildCopy(op, match, oend-8);
- match += (oend-8) - op;
- op = oend-8;
- }
- while (op<cpy) *op++ = *match++;
- }
- else
- LZ4_wildCopy(op, match, cpy);
- op=cpy; /* correction */
- }
-
- /* end of decoding */
- if (endOnInput)
- return (int) (((char*)op)-dest); /* Nb of output bytes decoded */
- else
- return (int) (((const char*)ip)-source); /* Nb of input bytes read */
-
- /* Overflow error detected */
-_output_error:
- return (int) (-(((const char*)ip)-source))-1;
-}
-
-
-int LZ4_decompress_safe(const char* source, char* dest, int compressedSize, int maxDecompressedSize)
-{
- return LZ4_decompress_generic(source, dest, compressedSize, maxDecompressedSize, endOnInputSize, full, 0, noDict, (BYTE*)dest, NULL, 0);
-}
-
-int LZ4_decompress_safe_partial(const char* source, char* dest, int compressedSize, int targetOutputSize, int maxDecompressedSize)
-{
- return LZ4_decompress_generic(source, dest, compressedSize, maxDecompressedSize, endOnInputSize, partial, targetOutputSize, noDict, (BYTE*)dest, NULL, 0);
-}
-
-int LZ4_decompress_fast(const char* source, char* dest, int originalSize)
-{
- return LZ4_decompress_generic(source, dest, 0, originalSize, endOnOutputSize, full, 0, withPrefix64k, (BYTE*)(dest - 64 KB), NULL, 64 KB);
-}
-
-
-/* streaming decompression functions */
-
-typedef struct
-{
- const BYTE* externalDict;
- size_t extDictSize;
- const BYTE* prefixEnd;
- size_t prefixSize;
-} LZ4_streamDecode_t_internal;
-
-/*
- * If you prefer dynamic allocation methods,
- * LZ4_createStreamDecode()
- * provides a pointer (void*) towards an initialized LZ4_streamDecode_t structure.
- */
-LZ4_streamDecode_t* LZ4_createStreamDecode(void)
-{
- LZ4_streamDecode_t* lz4s = (LZ4_streamDecode_t*) ALLOCATOR(1, sizeof(LZ4_streamDecode_t));
- return lz4s;
-}
-
-int LZ4_freeStreamDecode (LZ4_streamDecode_t* LZ4_stream)
-{
- FREEMEM(LZ4_stream);
- return 0;
-}
-
-/*
- * LZ4_setStreamDecode
- * Use this function to instruct where to find the dictionary
- * This function is not necessary if previous data is still available where it was decoded.
- * Loading a size of 0 is allowed (same effect as no dictionary).
- * Return : 1 if OK, 0 if error
- */
-int LZ4_setStreamDecode (LZ4_streamDecode_t* LZ4_streamDecode, const char* dictionary, int dictSize)
-{
- LZ4_streamDecode_t_internal* lz4sd = (LZ4_streamDecode_t_internal*) LZ4_streamDecode;
- lz4sd->prefixSize = (size_t) dictSize;
- lz4sd->prefixEnd = (const BYTE*) dictionary + dictSize;
- lz4sd->externalDict = NULL;
- lz4sd->extDictSize = 0;
- return 1;
-}
-
-/*
-*_continue() :
- These decoding functions allow decompression of multiple blocks in "streaming" mode.
- Previously decoded blocks must still be available at the memory position where they were decoded.
- If it's not possible, save the relevant part of decoded data into a safe buffer,
- and indicate where it stands using LZ4_setStreamDecode()
-*/
-int LZ4_decompress_safe_continue (LZ4_streamDecode_t* LZ4_streamDecode, const char* source, char* dest, int compressedSize, int maxOutputSize)
-{
- LZ4_streamDecode_t_internal* lz4sd = (LZ4_streamDecode_t_internal*) LZ4_streamDecode;
- int result;
-
- if (lz4sd->prefixEnd == (BYTE*)dest)
- {
- result = LZ4_decompress_generic(source, dest, compressedSize, maxOutputSize,
- endOnInputSize, full, 0,
- usingExtDict, lz4sd->prefixEnd - lz4sd->prefixSize, lz4sd->externalDict, lz4sd->extDictSize);
- if (result <= 0) return result;
- lz4sd->prefixSize += result;
- lz4sd->prefixEnd += result;
- }
- else
- {
- lz4sd->extDictSize = lz4sd->prefixSize;
- lz4sd->externalDict = lz4sd->prefixEnd - lz4sd->extDictSize;
- result = LZ4_decompress_generic(source, dest, compressedSize, maxOutputSize,
- endOnInputSize, full, 0,
- usingExtDict, (BYTE*)dest, lz4sd->externalDict, lz4sd->extDictSize);
- if (result <= 0) return result;
- lz4sd->prefixSize = result;
- lz4sd->prefixEnd = (BYTE*)dest + result;
- }
-
- return result;
-}
-
-int LZ4_decompress_fast_continue (LZ4_streamDecode_t* LZ4_streamDecode, const char* source, char* dest, int originalSize)
-{
- LZ4_streamDecode_t_internal* lz4sd = (LZ4_streamDecode_t_internal*) LZ4_streamDecode;
- int result;
-
- if (lz4sd->prefixEnd == (BYTE*)dest)
- {
- result = LZ4_decompress_generic(source, dest, 0, originalSize,
- endOnOutputSize, full, 0,
- usingExtDict, lz4sd->prefixEnd - lz4sd->prefixSize, lz4sd->externalDict, lz4sd->extDictSize);
- if (result <= 0) return result;
- lz4sd->prefixSize += originalSize;
- lz4sd->prefixEnd += originalSize;
- }
- else
- {
- lz4sd->extDictSize = lz4sd->prefixSize;
- lz4sd->externalDict = (BYTE*)dest - lz4sd->extDictSize;
- result = LZ4_decompress_generic(source, dest, 0, originalSize,
- endOnOutputSize, full, 0,
- usingExtDict, (BYTE*)dest, lz4sd->externalDict, lz4sd->extDictSize);
- if (result <= 0) return result;
- lz4sd->prefixSize = originalSize;
- lz4sd->prefixEnd = (BYTE*)dest + originalSize;
- }
-
- return result;
-}
-
-
-/*
-Advanced decoding functions :
-*_usingDict() :
- These decoding functions work the same as "_continue" ones,
- the dictionary must be explicitly provided within parameters
-*/
-
-FORCE_INLINE int LZ4_decompress_usingDict_generic(const char* source, char* dest, int compressedSize, int maxOutputSize, int safe, const char* dictStart, int dictSize)
-{
- if (dictSize==0)
- return LZ4_decompress_generic(source, dest, compressedSize, maxOutputSize, safe, full, 0, noDict, (BYTE*)dest, NULL, 0);
- if (dictStart+dictSize == dest)
- {
- if (dictSize >= (int)(64 KB - 1))
- return LZ4_decompress_generic(source, dest, compressedSize, maxOutputSize, safe, full, 0, withPrefix64k, (BYTE*)dest-64 KB, NULL, 0);
- return LZ4_decompress_generic(source, dest, compressedSize, maxOutputSize, safe, full, 0, noDict, (BYTE*)dest-dictSize, NULL, 0);
- }
- return LZ4_decompress_generic(source, dest, compressedSize, maxOutputSize, safe, full, 0, usingExtDict, (BYTE*)dest, (const BYTE*)dictStart, dictSize);
-}
-
-int LZ4_decompress_safe_usingDict(const char* source, char* dest, int compressedSize, int maxOutputSize, const char* dictStart, int dictSize)
-{
- return LZ4_decompress_usingDict_generic(source, dest, compressedSize, maxOutputSize, 1, dictStart, dictSize);
-}
-
-int LZ4_decompress_fast_usingDict(const char* source, char* dest, int originalSize, const char* dictStart, int dictSize)
-{
- return LZ4_decompress_usingDict_generic(source, dest, 0, originalSize, 0, dictStart, dictSize);
-}
-
-/* debug function */
-int LZ4_decompress_safe_forceExtDict(const char* source, char* dest, int compressedSize, int maxOutputSize, const char* dictStart, int dictSize)
-{
- return LZ4_decompress_generic(source, dest, compressedSize, maxOutputSize, endOnInputSize, full, 0, usingExtDict, (BYTE*)dest, (const BYTE*)dictStart, dictSize);
-}
-
-
-/***************************************************
-* Obsolete Functions
-***************************************************/
-/* obsolete compression functions */
-int LZ4_compress_limitedOutput(const char* source, char* dest, int inputSize, int maxOutputSize) { return LZ4_compress_default(source, dest, inputSize, maxOutputSize); }
-int LZ4_compress(const char* source, char* dest, int inputSize) { return LZ4_compress_default(source, dest, inputSize, LZ4_compressBound(inputSize)); }
-int LZ4_compress_limitedOutput_withState (void* state, const char* src, char* dst, int srcSize, int dstSize) { return LZ4_compress_fast_extState(state, src, dst, srcSize, dstSize, 1); }
-int LZ4_compress_withState (void* state, const char* src, char* dst, int srcSize) { return LZ4_compress_fast_extState(state, src, dst, srcSize, LZ4_compressBound(srcSize), 1); }
-int LZ4_compress_limitedOutput_continue (LZ4_stream_t* LZ4_stream, const char* src, char* dst, int srcSize, int maxDstSize) { return LZ4_compress_fast_continue(LZ4_stream, src, dst, srcSize, maxDstSize, 1); }
-int LZ4_compress_continue (LZ4_stream_t* LZ4_stream, const char* source, char* dest, int inputSize) { return LZ4_compress_fast_continue(LZ4_stream, source, dest, inputSize, LZ4_compressBound(inputSize), 1); }
-
-/*
-These function names are deprecated and should no longer be used.
-They are only provided here for compatibility with older user programs.
-- LZ4_uncompress is totally equivalent to LZ4_decompress_fast
-- LZ4_uncompress_unknownOutputSize is totally equivalent to LZ4_decompress_safe
-*/
-int LZ4_uncompress (const char* source, char* dest, int outputSize) { return LZ4_decompress_fast(source, dest, outputSize); }
-int LZ4_uncompress_unknownOutputSize (const char* source, char* dest, int isize, int maxOutputSize) { return LZ4_decompress_safe(source, dest, isize, maxOutputSize); }
-
-
-/* Obsolete Streaming functions */
-
-int LZ4_sizeofStreamState() { return LZ4_STREAMSIZE; }
-
-static void LZ4_init(LZ4_stream_t_internal* lz4ds, BYTE* base)
-{
- MEM_INIT(lz4ds, 0, LZ4_STREAMSIZE);
- lz4ds->bufferStart = base;
-}
-
-int LZ4_resetStreamState(void* state, char* inputBuffer)
-{
- if ((((size_t)state) & 3) != 0) return 1; /* Error : pointer is not aligned on 4-bytes boundary */
- LZ4_init((LZ4_stream_t_internal*)state, (BYTE*)inputBuffer);
- return 0;
-}
-
-void* LZ4_create (char* inputBuffer)
-{
- void* lz4ds = ALLOCATOR(8, LZ4_STREAMSIZE_U64);
- LZ4_init ((LZ4_stream_t_internal*)lz4ds, (BYTE*)inputBuffer);
- return lz4ds;
-}
-
-char* LZ4_slideInputBuffer (void* LZ4_Data)
-{
- LZ4_stream_t_internal* ctx = (LZ4_stream_t_internal*)LZ4_Data;
- int dictSize = LZ4_saveDict((LZ4_stream_t*)LZ4_Data, (char*)ctx->bufferStart, 64 KB);
- return (char*)(ctx->bufferStart + dictSize);
-}
-
-/* Obsolete streaming decompression functions */
-
-int LZ4_decompress_safe_withPrefix64k(const char* source, char* dest, int compressedSize, int maxOutputSize)
-{
- return LZ4_decompress_generic(source, dest, compressedSize, maxOutputSize, endOnInputSize, full, 0, withPrefix64k, (BYTE*)dest - 64 KB, NULL, 64 KB);
-}
-
-int LZ4_decompress_fast_withPrefix64k(const char* source, char* dest, int originalSize)
-{
- return LZ4_decompress_generic(source, dest, 0, originalSize, endOnOutputSize, full, 0, withPrefix64k, (BYTE*)dest - 64 KB, NULL, 64 KB);
-}
-
-#endif /* LZ4_COMMONDEFS_ONLY */
-
diff --git a/pulsar-client-cpp/lib/lz4/lz4.cc b/pulsar-client-cpp/lib/lz4/lz4.cc
new file mode 100644
index 0000000..0baa575
--- /dev/null
+++ b/pulsar-client-cpp/lib/lz4/lz4.cc
@@ -0,0 +1,1507 @@
+/*
+ LZ4 - Fast LZ compression algorithm
+ Copyright (C) 2011-2015, Yann Collet.
+
+ BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above
+ copyright notice, this list of conditions and the following disclaimer
+ in the documentation and/or other materials provided with the
+ distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+ You can contact the author at :
+ - LZ4 source repository : https://github.com/Cyan4973/lz4
+ - LZ4 public forum : https://groups.google.com/forum/#!forum/lz4c
+*/
+
+/**************************************
+ * Tuning parameters
+ **************************************/
+/*
+ * HEAPMODE :
+ * Select how default compression functions will allocate memory for their hash table,
+ * in memory stack (0:default, fastest), or in memory heap (1:requires malloc()).
+ */
+#define HEAPMODE 0
+
+/*
+ * ACCELERATION_DEFAULT :
+ * Select "acceleration" for LZ4_compress_fast() when parameter value <= 0
+ */
+#define ACCELERATION_DEFAULT 1
+
+/**************************************
+ * CPU Feature Detection
+ **************************************/
+/*
+ * LZ4_FORCE_SW_BITCOUNT
+ * Define this parameter if your target system or compiler does not support hardware bit count
+ */
+#if defined(_MSC_VER) && \
+ defined(_WIN32_WCE) /* Visual Studio for Windows CE does not support Hardware bit count */
+#define LZ4_FORCE_SW_BITCOUNT
+#endif
+
+/**************************************
+ * Includes
+ **************************************/
+#include "lz4.h"
+
+/**************************************
+ * Compiler Options
+ **************************************/
+#ifdef _MSC_VER /* Visual Studio */
+#define FORCE_INLINE static __forceinline
+#include <intrin.h>
+#pragma warning(disable : 4127) /* disable: C4127: conditional expression is constant */
+#pragma warning(disable : 4293) /* disable: C4293: too large shift (32-bits) */
+#else
+#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */
+#if defined(__GNUC__) || defined(__clang__)
+#define FORCE_INLINE static inline __attribute__((always_inline))
+#else
+#define FORCE_INLINE static inline
+#endif
+#else
+#define FORCE_INLINE static
+#endif /* __STDC_VERSION__ */
+#endif /* _MSC_VER */
+
+/* LZ4_GCC_VERSION is defined into lz4.h */
+#if (LZ4_GCC_VERSION >= 302) || (__INTEL_COMPILER >= 800) || defined(__clang__)
+#define expect(expr, value) (__builtin_expect((expr), (value)))
+#else
+#define expect(expr, value) (expr)
+#endif
+
+#define likely(expr) expect((expr) != 0, 1)
+#define unlikely(expr) expect((expr) != 0, 0)
+
+/**************************************
+ * Memory routines
+ **************************************/
+#include <stdlib.h> /* malloc, calloc, free */
+#define ALLOCATOR(n, s) calloc(n, s)
+#define FREEMEM free
+#include <string.h> /* memset, memcpy */
+#define MEM_INIT memset
+
+/**************************************
+ * Basic Types
+ **************************************/
+#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */
+#include <stdint.h>
+typedef uint8_t BYTE;
+typedef uint16_t U16;
+typedef uint32_t U32;
+typedef int32_t S32;
+typedef uint64_t U64;
+#else
+typedef unsigned char BYTE;
+typedef unsigned short U16;
+typedef unsigned int U32;
+typedef signed int S32;
+typedef unsigned long long U64;
+#endif
+
+/**************************************
+ * Reading and writing into memory
+ **************************************/
+#define STEPSIZE sizeof(size_t)
+
+namespace pulsar {
+
+static unsigned LZ4_64bits(void) { return sizeof(void *) == 8; }
+
+static unsigned LZ4_isLittleEndian(void) {
+ const union {
+ U32 i;
+ BYTE c[4];
+ } one = {1}; /* don't use static : performance detrimental */
+ return one.c[0];
+}
+
+static U16 LZ4_read16(const void *memPtr) {
+ U16 val16;
+ memcpy(&val16, memPtr, 2);
+ return val16;
+}
+
+static U16 LZ4_readLE16(const void *memPtr) {
+ if (LZ4_isLittleEndian()) {
+ return LZ4_read16(memPtr);
+ } else {
+ const BYTE *p = (const BYTE *)memPtr;
+ return (U16)((U16)p[0] + (p[1] << 8));
+ }
+}
+
+static void LZ4_writeLE16(void *memPtr, U16 value) {
+ if (LZ4_isLittleEndian()) {
+ memcpy(memPtr, &value, 2);
+ } else {
+ BYTE *p = (BYTE *)memPtr;
+ p[0] = (BYTE)value;
+ p[1] = (BYTE)(value >> 8);
+ }
+}
+
+static U32 LZ4_read32(const void *memPtr) {
+ U32 val32;
+ memcpy(&val32, memPtr, 4);
+ return val32;
+}
+
+static U64 LZ4_read64(const void *memPtr) {
+ U64 val64;
+ memcpy(&val64, memPtr, 8);
+ return val64;
+}
+
+static size_t LZ4_read_ARCH(const void *p) {
+ if (LZ4_64bits())
+ return (size_t)LZ4_read64(p);
+ else
+ return (size_t)LZ4_read32(p);
+}
+
+static void LZ4_copy4(void *dstPtr, const void *srcPtr) { memcpy(dstPtr, srcPtr, 4); }
+
+static void LZ4_copy8(void *dstPtr, const void *srcPtr) { memcpy(dstPtr, srcPtr, 8); }
+
+/* customized version of memcpy, which may overwrite up to 7 bytes beyond dstEnd */
+static void LZ4_wildCopy(void *dstPtr, const void *srcPtr, void *dstEnd) {
+ BYTE *d = (BYTE *)dstPtr;
+ const BYTE *s = (const BYTE *)srcPtr;
+ BYTE *e = (BYTE *)dstEnd;
+ do {
+ LZ4_copy8(d, s);
+ d += 8;
+ s += 8;
+ } while (d < e);
+}
+
+/**************************************
+ * Common Constants
+ **************************************/
+#define MINMATCH 4
+
+#define COPYLENGTH 8
+#define LASTLITERALS 5
+#define MFLIMIT (COPYLENGTH + MINMATCH)
+static const int LZ4_minLength = (MFLIMIT + 1);
+
+#define KB *(1 << 10)
+#define MB *(1 << 20)
+#define GB *(1U << 30)
+
+#define MAXD_LOG 16
+#define MAX_DISTANCE ((1 << MAXD_LOG) - 1)
+
+#define ML_BITS 4
+#define ML_MASK ((1U << ML_BITS) - 1)
+#define RUN_BITS (8 - ML_BITS)
+#define RUN_MASK ((1U << RUN_BITS) - 1)
+
+/**************************************
+ * Common Utils
+ **************************************/
+#define LZ4_STATIC_ASSERT(c) \
+ { \
+ enum \
+ { \
+ LZ4_static_assert = 1 / (int)(!!(c)) \
+ }; \
+ } /* use only *after* variable declarations */
+
+/**************************************
+ * Common functions
+ **************************************/
+static unsigned LZ4_NbCommonBytes(size_t val) {
+ if (LZ4_isLittleEndian()) {
+ if (LZ4_64bits()) {
+#if defined(_MSC_VER) && defined(_WIN64) && !defined(LZ4_FORCE_SW_BITCOUNT)
+ unsigned long r = 0;
+ _BitScanForward64(&r, (U64)val);
+ return (int)(r >> 3);
+#elif (defined(__clang__) || (LZ4_GCC_VERSION >= 304)) && !defined(LZ4_FORCE_SW_BITCOUNT)
+ return (__builtin_ctzll((U64)val) >> 3);
+#else
+ static const int DeBruijnBytePos[64] = {0, 0, 0, 0, 0, 1, 1, 2, 0, 3, 1, 3, 1, 4, 2, 7,
+ 0, 2, 3, 6, 1, 5, 3, 5, 1, 3, 4, 4, 2, 5, 6, 7,
+ 7, 0, 1, 2, 3, 3, 4, 6, 2, 6, 5, 5, 3, 4, 5, 6,
+ 7, 1, 2, 4, 6, 4, 4, 5, 7, 2, 6, 5, 7, 6, 7, 7};
+ return DeBruijnBytePos[((U64)((val & -(long long)val) * 0x0218A392CDABBD3FULL)) >> 58];
+#endif
+ } else /* 32 bits */
+ {
+#if defined(_MSC_VER) && !defined(LZ4_FORCE_SW_BITCOUNT)
+ unsigned long r;
+ _BitScanForward(&r, (U32)val);
+ return (int)(r >> 3);
+#elif (defined(__clang__) || (LZ4_GCC_VERSION >= 304)) && !defined(LZ4_FORCE_SW_BITCOUNT)
+ return (__builtin_ctz((U32)val) >> 3);
+#else
+ static const int DeBruijnBytePos[32] = {0, 0, 3, 0, 3, 1, 3, 0, 3, 2, 2, 1, 3, 2, 0, 1,
+ 3, 3, 1, 2, 2, 2, 2, 0, 3, 1, 2, 0, 1, 0, 1, 1};
+ return DeBruijnBytePos[((U32)((val & -(S32)val) * 0x077CB531U)) >> 27];
+#endif
+ }
+ } else /* Big Endian CPU */
+ {
+ if (LZ4_64bits()) {
+#if defined(_MSC_VER) && defined(_WIN64) && !defined(LZ4_FORCE_SW_BITCOUNT)
+ unsigned long r = 0;
+ _BitScanReverse64(&r, val);
+ return (unsigned)(r >> 3);
+#elif (defined(__clang__) || (LZ4_GCC_VERSION >= 304)) && !defined(LZ4_FORCE_SW_BITCOUNT)
+ return (__builtin_clzll((U64)val) >> 3);
+#else
+ unsigned r;
+ if (!(val >> 32)) {
+ r = 4;
+ } else {
+ r = 0;
+ val >>= 32;
+ }
+ if (!(val >> 16)) {
+ r += 2;
+ val >>= 8;
+ } else {
+ val >>= 24;
+ }
+ r += (!val);
+ return r;
+#endif
+ } else /* 32 bits */
+ {
+#if defined(_MSC_VER) && !defined(LZ4_FORCE_SW_BITCOUNT)
+ unsigned long r = 0;
+ _BitScanReverse(&r, (unsigned long)val);
+ return (unsigned)(r >> 3);
+#elif (defined(__clang__) || (LZ4_GCC_VERSION >= 304)) && !defined(LZ4_FORCE_SW_BITCOUNT)
+ return (__builtin_clz((U32)val) >> 3);
+#else
+ unsigned r;
+ if (!(val >> 16)) {
+ r = 2;
+ val >>= 8;
+ } else {
+ r = 0;
+ val >>= 24;
+ }
+ r += (!val);
+ return r;
+#endif
+ }
+ }
+}
+
+static unsigned LZ4_count(const BYTE *pIn, const BYTE *pMatch, const BYTE *pInLimit) {
+ const BYTE *const pStart = pIn;
+
+ while (likely(pIn < pInLimit - (STEPSIZE - 1))) {
+ size_t diff = LZ4_read_ARCH(pMatch) ^ LZ4_read_ARCH(pIn);
+ if (!diff) {
+ pIn += STEPSIZE;
+ pMatch += STEPSIZE;
+ continue;
+ }
+ pIn += LZ4_NbCommonBytes(diff);
+ return (unsigned)(pIn - pStart);
+ }
+
+ if (LZ4_64bits())
+ if ((pIn < (pInLimit - 3)) && (LZ4_read32(pMatch) == LZ4_read32(pIn))) {
+ pIn += 4;
+ pMatch += 4;
+ }
+ if ((pIn < (pInLimit - 1)) && (LZ4_read16(pMatch) == LZ4_read16(pIn))) {
+ pIn += 2;
+ pMatch += 2;
+ }
+ if ((pIn < pInLimit) && (*pMatch == *pIn)) pIn++;
+ return (unsigned)(pIn - pStart);
+}
+
+#ifndef LZ4_COMMONDEFS_ONLY
+/**************************************
+ * Local Constants
+ **************************************/
+#define LZ4_HASHLOG (LZ4_MEMORY_USAGE - 2)
+#define HASHTABLESIZE (1 << LZ4_MEMORY_USAGE)
+#define HASH_SIZE_U32 (1 << LZ4_HASHLOG) /* required as macro for static allocation */
+
+static const int LZ4_64Klimit = ((64 KB) + (MFLIMIT - 1));
+static const U32 LZ4_skipTrigger =
+ 6; /* Increase this value ==> compression run slower on incompressible data */
+
+/**************************************
+ * Local Structures and types
+ **************************************/
+typedef struct {
+ U32 hashTable[HASH_SIZE_U32];
+ U32 currentOffset;
+ U32 initCheck;
+ const BYTE *dictionary;
+ BYTE *bufferStart; /* obsolete, used for slideInputBuffer */
+ U32 dictSize;
+} LZ4_stream_t_internal;
+
+typedef enum { notLimited = 0, limitedOutput = 1 } limitedOutput_directive;
+typedef enum { byPtr, byU32, byU16 } tableType_t;
+
+typedef enum { noDict = 0, withPrefix64k, usingExtDict } dict_directive;
+typedef enum { noDictIssue = 0, dictSmall } dictIssue_directive;
+
+typedef enum { endOnOutputSize = 0, endOnInputSize = 1 } endCondition_directive;
+typedef enum { full = 0, partial = 1 } earlyEnd_directive;
+
+/**************************************
+ * Local Utils
+ **************************************/
+int LZ4_versionNumber(void) { return LZ4_VERSION_NUMBER; }
+int LZ4_compressBound(int isize) { return LZ4_COMPRESSBOUND(isize); }
+int LZ4_sizeofState() { return LZ4_STREAMSIZE; }
+
+/********************************
+ * Compression functions
+ ********************************/
+
+static U32 LZ4_hashSequence(U32 sequence, tableType_t const tableType) {
+ if (tableType == byU16)
+ return (((sequence)*2654435761U) >> ((MINMATCH * 8) - (LZ4_HASHLOG + 1)));
+ else
+ return (((sequence)*2654435761U) >> ((MINMATCH * 8) - LZ4_HASHLOG));
+}
+
+static const U64 prime5bytes = 889523592379ULL;
+static U32 LZ4_hashSequence64(size_t sequence, tableType_t const tableType) {
+ const U32 hashLog = (tableType == byU16) ? LZ4_HASHLOG + 1 : LZ4_HASHLOG;
+ const U32 hashMask = (1 << hashLog) - 1;
+ return ((sequence * prime5bytes) >> (40 - hashLog)) & hashMask;
+}
+
+static U32 LZ4_hashSequenceT(size_t sequence, tableType_t const tableType) {
+ if (LZ4_64bits()) return LZ4_hashSequence64(sequence, tableType);
+ return LZ4_hashSequence((U32)sequence, tableType);
+}
+
+static U32 LZ4_hashPosition(const void *p, tableType_t tableType) {
+ return LZ4_hashSequenceT(LZ4_read_ARCH(p), tableType);
+}
+
+static void LZ4_putPositionOnHash(const BYTE *p, U32 h, void *tableBase, tableType_t const tableType,
+ const BYTE *srcBase) {
+ switch (tableType) {
+ case byPtr: {
+ const BYTE **hashTable = (const BYTE **)tableBase;
+ hashTable[h] = p;
+ return;
+ }
+ case byU32: {
+ U32 *hashTable = (U32 *)tableBase;
+ hashTable[h] = (U32)(p - srcBase);
+ return;
+ }
+ case byU16: {
+ U16 *hashTable = (U16 *)tableBase;
+ hashTable[h] = (U16)(p - srcBase);
+ return;
+ }
+ }
+}
+
+static void LZ4_putPosition(const BYTE *p, void *tableBase, tableType_t tableType, const BYTE *srcBase) {
+ U32 h = LZ4_hashPosition(p, tableType);
+ LZ4_putPositionOnHash(p, h, tableBase, tableType, srcBase);
+}
+
+static const BYTE *LZ4_getPositionOnHash(U32 h, void *tableBase, tableType_t tableType, const BYTE *srcBase) {
+ if (tableType == byPtr) {
+ const BYTE **hashTable = (const BYTE **)tableBase;
+ return hashTable[h];
+ }
+ if (tableType == byU32) {
+ U32 *hashTable = (U32 *)tableBase;
+ return hashTable[h] + srcBase;
+ }
+ {
+ U16 *hashTable = (U16 *)tableBase;
+ return hashTable[h] + srcBase;
+ } /* default, to ensure a return */
+}
+
+static const BYTE *LZ4_getPosition(const BYTE *p, void *tableBase, tableType_t tableType,
+ const BYTE *srcBase) {
+ U32 h = LZ4_hashPosition(p, tableType);
+ return LZ4_getPositionOnHash(h, tableBase, tableType, srcBase);
+}
+
+FORCE_INLINE int LZ4_compress_generic(void *const ctx, const char *const source, char *const dest,
+ const int inputSize, const int maxOutputSize,
+ const limitedOutput_directive outputLimited,
+ const tableType_t tableType, const dict_directive dict,
+ const dictIssue_directive dictIssue, const U32 acceleration) {
+ LZ4_stream_t_internal *const dictPtr = (LZ4_stream_t_internal *)ctx;
+
+ const BYTE *ip = (const BYTE *)source;
+ const BYTE *base;
+ const BYTE *lowLimit;
+ const BYTE *const lowRefLimit = ip - dictPtr->dictSize;
+ const BYTE *const dictionary = dictPtr->dictionary;
+ const BYTE *const dictEnd = dictionary + dictPtr->dictSize;
+ const size_t dictDelta = dictEnd - (const BYTE *)source;
+ const BYTE *anchor = (const BYTE *)source;
+ const BYTE *const iend = ip + inputSize;
+ const BYTE *const mflimit = iend - MFLIMIT;
+ const BYTE *const matchlimit = iend - LASTLITERALS;
+
+ BYTE *op = (BYTE *)dest;
+ BYTE *const olimit = op + maxOutputSize;
+
+ U32 forwardH;
+ size_t refDelta = 0;
+
+ /* Init conditions */
+ if ((U32)inputSize > (U32)LZ4_MAX_INPUT_SIZE)
+ return 0; /* Unsupported input size, too large (or negative) */
+ switch (dict) {
+ case noDict:
+ default:
+ base = (const BYTE *)source;
+ lowLimit = (const BYTE *)source;
+ break;
+ case withPrefix64k:
+ base = (const BYTE *)source - dictPtr->currentOffset;
+ lowLimit = (const BYTE *)source - dictPtr->dictSize;
+ break;
+ case usingExtDict:
+ base = (const BYTE *)source - dictPtr->currentOffset;
+ lowLimit = (const BYTE *)source;
+ break;
+ }
+ if ((tableType == byU16) && (inputSize >= LZ4_64Klimit))
+ return 0; /* Size too large (not within 64K limit) */
+ if (inputSize < LZ4_minLength) goto _last_literals; /* Input too small, no compression (all literals) */
+
+ /* First Byte */
+ LZ4_putPosition(ip, ctx, tableType, base);
+ ip++;
+ forwardH = LZ4_hashPosition(ip, tableType);
+
+ /* Main Loop */
+ for (;;) {
+ const BYTE *match;
+ BYTE *token;
+ {
+ const BYTE *forwardIp = ip;
+ unsigned step = 1;
+ unsigned searchMatchNb = acceleration << LZ4_skipTrigger;
+
+ /* Find a match */
+ do {
+ U32 h = forwardH;
+ ip = forwardIp;
+ forwardIp += step;
+ step = (searchMatchNb++ >> LZ4_skipTrigger);
+
+ if (unlikely(forwardIp > mflimit)) goto _last_literals;
+
+ match = LZ4_getPositionOnHash(h, ctx, tableType, base);
+ if (dict == usingExtDict) {
+ if (match < (const BYTE *)source) {
+ refDelta = dictDelta;
+ lowLimit = dictionary;
+ } else {
+ refDelta = 0;
+ lowLimit = (const BYTE *)source;
+ }
+ }
+ forwardH = LZ4_hashPosition(forwardIp, tableType);
+ LZ4_putPositionOnHash(ip, h, ctx, tableType, base);
+
+ } while (((dictIssue == dictSmall) ? (match < lowRefLimit) : 0) ||
+ ((tableType == byU16) ? 0 : (match + MAX_DISTANCE < ip)) ||
+ (LZ4_read32(match + refDelta) != LZ4_read32(ip)));
+ }
+
+ /* Catch up */
+ while ((ip > anchor) && (match + refDelta > lowLimit) && (unlikely(ip[-1] == match[refDelta - 1]))) {
+ ip--;
+ match--;
+ }
+
+ {
+ /* Encode Literal length */
+ unsigned litLength = (unsigned)(ip - anchor);
+ token = op++;
+ if ((outputLimited) &&
+ (unlikely(op + litLength + (2 + 1 + LASTLITERALS) + (litLength / 255) > olimit)))
+ return 0; /* Check output limit */
+ if (litLength >= RUN_MASK) {
+ int len = (int)litLength - RUN_MASK;
+ *token = (RUN_MASK << ML_BITS);
+ for (; len >= 255; len -= 255) *op++ = 255;
+ *op++ = (BYTE)len;
+ } else
+ *token = (BYTE)(litLength << ML_BITS);
+
+ /* Copy Literals */
+ LZ4_wildCopy(op, anchor, op + litLength);
+ op += litLength;
+ }
+
+ _next_match:
+ /* Encode Offset */
+ LZ4_writeLE16(op, (U16)(ip - match));
+ op += 2;
+
+ /* Encode MatchLength */
+ {
+ unsigned matchLength;
+
+ if ((dict == usingExtDict) && (lowLimit == dictionary)) {
+ const BYTE *limit;
+ match += refDelta;
+ limit = ip + (dictEnd - match);
+ if (limit > matchlimit) limit = matchlimit;
+ matchLength = LZ4_count(ip + MINMATCH, match + MINMATCH, limit);
+ ip += MINMATCH + matchLength;
+ if (ip == limit) {
+ unsigned more = LZ4_count(ip, (const BYTE *)source, matchlimit);
+ matchLength += more;
+ ip += more;
+ }
+ } else {
+ matchLength = LZ4_count(ip + MINMATCH, match + MINMATCH, matchlimit);
+ ip += MINMATCH + matchLength;
+ }
+
+ if ((outputLimited) && (unlikely(op + (1 + LASTLITERALS) + (matchLength >> 8) > olimit)))
+ return 0; /* Check output limit */
+ if (matchLength >= ML_MASK) {
+ *token += ML_MASK;
+ matchLength -= ML_MASK;
+ for (; matchLength >= 510; matchLength -= 510) {
+ *op++ = 255;
+ *op++ = 255;
+ }
+ if (matchLength >= 255) {
+ matchLength -= 255;
+ *op++ = 255;
+ }
+ *op++ = (BYTE)matchLength;
+ } else
+ *token += (BYTE)(matchLength);
+ }
+
+ anchor = ip;
+
+ /* Test end of chunk */
+ if (ip > mflimit) break;
+
+ /* Fill table */
+ LZ4_putPosition(ip - 2, ctx, tableType, base);
+
+ /* Test next position */
+ match = LZ4_getPosition(ip, ctx, tableType, base);
+ if (dict == usingExtDict) {
+ if (match < (const BYTE *)source) {
+ refDelta = dictDelta;
+ lowLimit = dictionary;
+ } else {
+ refDelta = 0;
+ lowLimit = (const BYTE *)source;
+ }
+ }
+ LZ4_putPosition(ip, ctx, tableType, base);
+ if (((dictIssue == dictSmall) ? (match >= lowRefLimit) : 1) && (match + MAX_DISTANCE >= ip) &&
+ (LZ4_read32(match + refDelta) == LZ4_read32(ip))) {
+ token = op++;
+ *token = 0;
+ goto _next_match;
+ }
+
+ /* Prepare next loop */
+ forwardH = LZ4_hashPosition(++ip, tableType);
+ }
+
+_last_literals:
+ /* Encode Last Literals */
+ {
+ const size_t lastRun = (size_t)(iend - anchor);
+ if ((outputLimited) &&
+ ((op - (BYTE *)dest) + lastRun + 1 + ((lastRun + 255 - RUN_MASK) / 255) > (U32)maxOutputSize))
+ return 0; /* Check output limit */
+ if (lastRun >= RUN_MASK) {
+ size_t accumulator = lastRun - RUN_MASK;
+ *op++ = RUN_MASK << ML_BITS;
+ for (; accumulator >= 255; accumulator -= 255) *op++ = 255;
+ *op++ = (BYTE)accumulator;
+ } else {
+ *op++ = (BYTE)(lastRun << ML_BITS);
+ }
+ memcpy(op, anchor, lastRun);
+ op += lastRun;
+ }
+
+ /* End */
+ return (int)(((char *)op) - dest);
+}
+
+int LZ4_compress_fast_extState(void *state, const char *source, char *dest, int inputSize, int maxOutputSize,
+ int acceleration) {
+ LZ4_resetStream((LZ4_stream_t *)state);
+ if (acceleration < 1) acceleration = ACCELERATION_DEFAULT;
+
+ if (maxOutputSize >= LZ4_compressBound(inputSize)) {
+ if (inputSize < LZ4_64Klimit)
+ return LZ4_compress_generic(state, source, dest, inputSize, 0, notLimited, byU16, noDict,
+ noDictIssue, acceleration);
+ else
+ return LZ4_compress_generic(state, source, dest, inputSize, 0, notLimited,
+ LZ4_64bits() ? byU32 : byPtr, noDict, noDictIssue, acceleration);
+ } else {
+ if (inputSize < LZ4_64Klimit)
+ return LZ4_compress_generic(state, source, dest, inputSize, maxOutputSize, limitedOutput, byU16,
+ noDict, noDictIssue, acceleration);
+ else
+ return LZ4_compress_generic(state, source, dest, inputSize, maxOutputSize, limitedOutput,
+ LZ4_64bits() ? byU32 : byPtr, noDict, noDictIssue, acceleration);
+ }
+}
+
+int LZ4_compress_fast(const char *source, char *dest, int inputSize, int maxOutputSize, int acceleration) {
+#if (HEAPMODE)
+ void *ctxPtr = ALLOCATOR(1, sizeof(LZ4_stream_t)); /* malloc-calloc always properly aligned */
+#else
+ LZ4_stream_t ctx;
+ void *ctxPtr = &ctx;
+#endif
+
+ int result = LZ4_compress_fast_extState(ctxPtr, source, dest, inputSize, maxOutputSize, acceleration);
+
+#if (HEAPMODE)
+ FREEMEM(ctxPtr);
+#endif
+ return result;
+}
+
+int LZ4_compress_default(const char *source, char *dest, int inputSize, int maxOutputSize) {
+ return LZ4_compress_fast(source, dest, inputSize, maxOutputSize, 1);
+}
+
+/* hidden debug function */
+/* strangely enough, gcc generates faster code when this function is uncommented, even if unused */
+int LZ4_compress_fast_force(const char *source, char *dest, int inputSize, int maxOutputSize,
+ int acceleration) {
+ LZ4_stream_t ctx;
+
+ LZ4_resetStream(&ctx);
+
+ if (inputSize < LZ4_64Klimit)
+ return LZ4_compress_generic(&ctx, source, dest, inputSize, maxOutputSize, limitedOutput, byU16,
+ noDict, noDictIssue, acceleration);
+ else
+ return LZ4_compress_generic(&ctx, source, dest, inputSize, maxOutputSize, limitedOutput,
+ LZ4_64bits() ? byU32 : byPtr, noDict, noDictIssue, acceleration);
+}
+
+/********************************
+ * destSize variant
+ ********************************/
+
+static int LZ4_compress_destSize_generic(void *const ctx, const char *const src, char *const dst,
+ int *const srcSizePtr, const int targetDstSize,
+ const tableType_t tableType) {
+ const BYTE *ip = (const BYTE *)src;
+ const BYTE *base = (const BYTE *)src;
+ const BYTE *lowLimit = (const BYTE *)src;
+ const BYTE *anchor = ip;
+ const BYTE *const iend = ip + *srcSizePtr;
+ const BYTE *const mflimit = iend - MFLIMIT;
+ const BYTE *const matchlimit = iend - LASTLITERALS;
+
+ BYTE *op = (BYTE *)dst;
+ BYTE *const oend = op + targetDstSize;
+ BYTE *const oMaxLit =
+ op + targetDstSize - 2 /* offset */ - 8 /* because 8+MINMATCH==MFLIMIT */ - 1 /* token */;
+ BYTE *const oMaxMatch = op + targetDstSize - (LASTLITERALS + 1 /* token */);
+ BYTE *const oMaxSeq = oMaxLit - 1 /* token */;
+
+ U32 forwardH;
+
+ /* Init conditions */
+ if (targetDstSize < 1) return 0; /* Impossible to store anything */
+ if ((U32)*srcSizePtr > (U32)LZ4_MAX_INPUT_SIZE)
+ return 0; /* Unsupported input size, too large (or negative) */
+ if ((tableType == byU16) && (*srcSizePtr >= LZ4_64Klimit))
+ return 0; /* Size too large (not within 64K limit) */
+ if (*srcSizePtr < LZ4_minLength) goto _last_literals; /* Input too small, no compression (all literals) */
+
+ /* First Byte */
+ *srcSizePtr = 0;
+ LZ4_putPosition(ip, ctx, tableType, base);
+ ip++;
+ forwardH = LZ4_hashPosition(ip, tableType);
+
+ /* Main Loop */
+ for (;;) {
+ const BYTE *match;
+ BYTE *token;
+ {
+ const BYTE *forwardIp = ip;
+ unsigned step = 1;
+ unsigned searchMatchNb = 1 << LZ4_skipTrigger;
+
+ /* Find a match */
+ do {
+ U32 h = forwardH;
+ ip = forwardIp;
+ forwardIp += step;
+ step = (searchMatchNb++ >> LZ4_skipTrigger);
+
+ if (unlikely(forwardIp > mflimit)) goto _last_literals;
+
+ match = LZ4_getPositionOnHash(h, ctx, tableType, base);
+ forwardH = LZ4_hashPosition(forwardIp, tableType);
+ LZ4_putPositionOnHash(ip, h, ctx, tableType, base);
+
+ } while (((tableType == byU16) ? 0 : (match + MAX_DISTANCE < ip)) ||
+ (LZ4_read32(match) != LZ4_read32(ip)));
+ }
+
+ /* Catch up */
+ while ((ip > anchor) && (match > lowLimit) && (unlikely(ip[-1] == match[-1]))) {
+ ip--;
+ match--;
+ }
+
+ {
+ /* Encode Literal length */
+ unsigned litLength = (unsigned)(ip - anchor);
+ token = op++;
+ if (op + ((litLength + 240) / 255) + litLength > oMaxLit) {
+ /* Not enough space for a last match */
+ op--;
+ goto _last_literals;
+ }
+ if (litLength >= RUN_MASK) {
+ unsigned len = litLength - RUN_MASK;
+ *token = (RUN_MASK << ML_BITS);
+ for (; len >= 255; len -= 255) *op++ = 255;
+ *op++ = (BYTE)len;
+ } else
+ *token = (BYTE)(litLength << ML_BITS);
+
+ /* Copy Literals */
+ LZ4_wildCopy(op, anchor, op + litLength);
+ op += litLength;
+ }
+
+ _next_match:
+ /* Encode Offset */
+ LZ4_writeLE16(op, (U16)(ip - match));
+ op += 2;
+
+ /* Encode MatchLength */
+ {
+ size_t matchLength;
+
+ matchLength = LZ4_count(ip + MINMATCH, match + MINMATCH, matchlimit);
+
+ if (op + ((matchLength + 240) / 255) > oMaxMatch) {
+ /* Match description too long : reduce it */
+ matchLength = (15 - 1) + (oMaxMatch - op) * 255;
+ }
+ // printf("offset %5i, matchLength%5i \n", (int)(ip-match), matchLength + MINMATCH);
+ ip += MINMATCH + matchLength;
+
+ if (matchLength >= ML_MASK) {
+ *token += ML_MASK;
+ matchLength -= ML_MASK;
+ while (matchLength >= 255) {
+ matchLength -= 255;
+ *op++ = 255;
+ }
+ *op++ = (BYTE)matchLength;
+ } else
+ *token += (BYTE)(matchLength);
+ }
+
+ anchor = ip;
+
+ /* Test end of block */
+ if (ip > mflimit) break;
+ if (op > oMaxSeq) break;
+
+ /* Fill table */
+ LZ4_putPosition(ip - 2, ctx, tableType, base);
+
+ /* Test next position */
+ match = LZ4_getPosition(ip, ctx, tableType, base);
+ LZ4_putPosition(ip, ctx, tableType, base);
+ if ((match + MAX_DISTANCE >= ip) && (LZ4_read32(match) == LZ4_read32(ip))) {
+ token = op++;
+ *token = 0;
+ goto _next_match;
+ }
+
+ /* Prepare next loop */
+ forwardH = LZ4_hashPosition(++ip, tableType);
+ }
+
+_last_literals:
+ /* Encode Last Literals */
+ {
+ size_t lastRunSize = (size_t)(iend - anchor);
+ if (op + 1 /* token */ + ((lastRunSize + 240) / 255) /* litLength */ + lastRunSize /* literals */ >
+ oend) {
+ /* adapt lastRunSize to fill 'dst' */
+ lastRunSize = (oend - op) - 1;
+ lastRunSize -= (lastRunSize + 240) / 255;
+ }
+ ip = anchor + lastRunSize;
+
+ if (lastRunSize >= RUN_MASK) {
+ size_t accumulator = lastRunSize - RUN_MASK;
+ *op++ = RUN_MASK << ML_BITS;
+ for (; accumulator >= 255; accumulator -= 255) *op++ = 255;
+ *op++ = (BYTE)accumulator;
+ } else {
+ *op++ = (BYTE)(lastRunSize << ML_BITS);
+ }
+ memcpy(op, anchor, lastRunSize);
+ op += lastRunSize;
+ }
+
+ /* End */
+ *srcSizePtr = (int)(((const char *)ip) - src);
+ return (int)(((char *)op) - dst);
+}
+
+static int LZ4_compress_destSize_extState(void *state, const char *src, char *dst, int *srcSizePtr,
+ int targetDstSize) {
+ LZ4_resetStream((LZ4_stream_t *)state);
+
+ if (targetDstSize >= LZ4_compressBound(*srcSizePtr)) /* compression success is guaranteed */
+ {
+ return LZ4_compress_fast_extState(state, src, dst, *srcSizePtr, targetDstSize, 1);
+ } else {
+ if (*srcSizePtr < LZ4_64Klimit)
+ return LZ4_compress_destSize_generic(state, src, dst, srcSizePtr, targetDstSize, byU16);
+ else
+ return LZ4_compress_destSize_generic(state, src, dst, srcSizePtr, targetDstSize,
+ LZ4_64bits() ? byU32 : byPtr);
+ }
+}
+
+int LZ4_compress_destSize(const char *src, char *dst, int *srcSizePtr, int targetDstSize) {
+#if (HEAPMODE)
+ void *ctx = ALLOCATOR(1, sizeof(LZ4_stream_t)); /* malloc-calloc always properly aligned */
+#else
+ LZ4_stream_t ctxBody;
+ void *ctx = &ctxBody;
+#endif
+
+ int result = LZ4_compress_destSize_extState(ctx, src, dst, srcSizePtr, targetDstSize);
+
+#if (HEAPMODE)
+ FREEMEM(ctx);
+#endif
+ return result;
+}
+
+/********************************
+ * Streaming functions
+ ********************************/
+
+LZ4_stream_t *LZ4_createStream(void) {
+ LZ4_stream_t *lz4s = (LZ4_stream_t *)ALLOCATOR(8, LZ4_STREAMSIZE_U64);
+ LZ4_STATIC_ASSERT(
+ LZ4_STREAMSIZE >=
+ sizeof(
+ LZ4_stream_t_internal)); /* A compilation error here means LZ4_STREAMSIZE is not large enough */
+ LZ4_resetStream(lz4s);
+ return lz4s;
+}
+
+void LZ4_resetStream(LZ4_stream_t *LZ4_stream) { MEM_INIT(LZ4_stream, 0, sizeof(LZ4_stream_t)); }
+
+int LZ4_freeStream(LZ4_stream_t *LZ4_stream) {
+ FREEMEM(LZ4_stream);
+ return (0);
+}
+
+#define HASH_UNIT sizeof(size_t)
+int LZ4_loadDict(LZ4_stream_t *LZ4_dict, const char *dictionary, int dictSize) {
+ LZ4_stream_t_internal *dict = (LZ4_stream_t_internal *)LZ4_dict;
+ const BYTE *p = (const BYTE *)dictionary;
+ const BYTE *const dictEnd = p + dictSize;
+ const BYTE *base;
+
+ if ((dict->initCheck) || (dict->currentOffset > 1 GB)) /* Uninitialized structure, or reuse overflow */
+ LZ4_resetStream(LZ4_dict);
+
+ if (dictSize < (int)HASH_UNIT) {
+ dict->dictionary = NULL;
+ dict->dictSize = 0;
+ return 0;
+ }
+
+ if ((dictEnd - p) > 64 KB) p = dictEnd - 64 KB;
+ dict->currentOffset += 64 KB;
+ base = p - dict->currentOffset;
+ dict->dictionary = p;
+ dict->dictSize = (U32)(dictEnd - p);
+ dict->currentOffset += dict->dictSize;
+
+ while (p <= dictEnd - HASH_UNIT) {
+ LZ4_putPosition(p, dict->hashTable, byU32, base);
+ p += 3;
+ }
+
+ return dict->dictSize;
+}
+
+static void LZ4_renormDictT(LZ4_stream_t_internal *LZ4_dict, const BYTE *src) {
+ if ((LZ4_dict->currentOffset > 0x80000000) ||
+ ((size_t)LZ4_dict->currentOffset > (size_t)src)) /* address space overflow */
+ {
+ /* rescale hash table */
+ U32 delta = LZ4_dict->currentOffset - 64 KB;
+ const BYTE *dictEnd = LZ4_dict->dictionary + LZ4_dict->dictSize;
+ int i;
+ for (i = 0; i < HASH_SIZE_U32; i++) {
+ if (LZ4_dict->hashTable[i] < delta)
+ LZ4_dict->hashTable[i] = 0;
+ else
+ LZ4_dict->hashTable[i] -= delta;
+ }
+ LZ4_dict->currentOffset = 64 KB;
+ if (LZ4_dict->dictSize > 64 KB) LZ4_dict->dictSize = 64 KB;
+ LZ4_dict->dictionary = dictEnd - LZ4_dict->dictSize;
+ }
+}
+
+int LZ4_compress_fast_continue(LZ4_stream_t *LZ4_stream, const char *source, char *dest, int inputSize,
+ int maxOutputSize, int acceleration) {
+ LZ4_stream_t_internal *streamPtr = (LZ4_stream_t_internal *)LZ4_stream;
+ const BYTE *const dictEnd = streamPtr->dictionary + streamPtr->dictSize;
+
+ const BYTE *smallest = (const BYTE *)source;
+ if (streamPtr->initCheck) return 0; /* Uninitialized structure detected */
+ if ((streamPtr->dictSize > 0) && (smallest > dictEnd)) smallest = dictEnd;
+ LZ4_renormDictT(streamPtr, smallest);
+ if (acceleration < 1) acceleration = ACCELERATION_DEFAULT;
+
+ /* Check overlapping input/dictionary space */
+ {
+ const BYTE *sourceEnd = (const BYTE *)source + inputSize;
+ if ((sourceEnd > streamPtr->dictionary) && (sourceEnd < dictEnd)) {
+ streamPtr->dictSize = (U32)(dictEnd - sourceEnd);
+ if (streamPtr->dictSize > 64 KB) streamPtr->dictSize = 64 KB;
+ if (streamPtr->dictSize < 4) streamPtr->dictSize = 0;
+ streamPtr->dictionary = dictEnd - streamPtr->dictSize;
+ }
+ }
+
+ /* prefix mode : source data follows dictionary */
+ if (dictEnd == (const BYTE *)source) {
+ int result;
+ if ((streamPtr->dictSize < 64 KB) && (streamPtr->dictSize < streamPtr->currentOffset))
+ result = LZ4_compress_generic(LZ4_stream, source, dest, inputSize, maxOutputSize, limitedOutput,
+ byU32, withPrefix64k, dictSmall, acceleration);
+ else
+ result = LZ4_compress_generic(LZ4_stream, source, dest, inputSize, maxOutputSize, limitedOutput,
+ byU32, withPrefix64k, noDictIssue, acceleration);
+ streamPtr->dictSize += (U32)inputSize;
+ streamPtr->currentOffset += (U32)inputSize;
+ return result;
+ }
+
+ /* external dictionary mode */
+ {
+ int result;
+ if ((streamPtr->dictSize < 64 KB) && (streamPtr->dictSize < streamPtr->currentOffset))
+ result = LZ4_compress_generic(LZ4_stream, source, dest, inputSize, maxOutputSize, limitedOutput,
+ byU32, usingExtDict, dictSmall, acceleration);
+ else
+ result = LZ4_compress_generic(LZ4_stream, source, dest, inputSize, maxOutputSize, limitedOutput,
+ byU32, usingExtDict, noDictIssue, acceleration);
+ streamPtr->dictionary = (const BYTE *)source;
+ streamPtr->dictSize = (U32)inputSize;
+ streamPtr->currentOffset += (U32)inputSize;
+ return result;
+ }
+}
+
+/* Hidden debug function, to force external dictionary mode */
+int LZ4_compress_forceExtDict(LZ4_stream_t *LZ4_dict, const char *source, char *dest, int inputSize) {
+ LZ4_stream_t_internal *streamPtr = (LZ4_stream_t_internal *)LZ4_dict;
+ int result;
+ const BYTE *const dictEnd = streamPtr->dictionary + streamPtr->dictSize;
+
+ const BYTE *smallest = dictEnd;
+ if (smallest > (const BYTE *)source) smallest = (const BYTE *)source;
+ LZ4_renormDictT((LZ4_stream_t_internal *)LZ4_dict, smallest);
+
+ result = LZ4_compress_generic(LZ4_dict, source, dest, inputSize, 0, notLimited, byU32, usingExtDict,
+ noDictIssue, 1);
+
+ streamPtr->dictionary = (const BYTE *)source;
+ streamPtr->dictSize = (U32)inputSize;
+ streamPtr->currentOffset += (U32)inputSize;
+
+ return result;
+}
+
+int LZ4_saveDict(LZ4_stream_t *LZ4_dict, char *safeBuffer, int dictSize) {
+ LZ4_stream_t_internal *dict = (LZ4_stream_t_internal *)LZ4_dict;
+ const BYTE *previousDictEnd = dict->dictionary + dict->dictSize;
+
+ if ((U32)dictSize > 64 KB) dictSize = 64 KB; /* useless to define a dictionary > 64 KB */
+ if ((U32)dictSize > dict->dictSize) dictSize = dict->dictSize;
+
+ memmove(safeBuffer, previousDictEnd - dictSize, dictSize);
+
+ dict->dictionary = (const BYTE *)safeBuffer;
+ dict->dictSize = (U32)dictSize;
+
+ return dictSize;
+}
+
+/*******************************
+ * Decompression functions
+ *******************************/
+/*
+ * This generic decompression function cover all use cases.
+ * It shall be instantiated several times, using different sets of directives
+ * Note that it is essential this generic function is really inlined,
+ * in order to remove useless branches during compilation optimization.
+ */
+FORCE_INLINE int LZ4_decompress_generic(
+ const char *const source, char *const dest, int inputSize,
+ int outputSize, /* If endOnInput==endOnInputSize, this value is the max size of Output Buffer. */
+
+ int endOnInput, /* endOnOutputSize, endOnInputSize */
+ int partialDecoding, /* full, partial */
+ int targetOutputSize, /* only used if partialDecoding==partial */
+ int dict, /* noDict, withPrefix64k, usingExtDict */
+ const BYTE *const lowPrefix, /* == dest if dict == noDict */
+ const BYTE *const dictStart, /* only if dict==usingExtDict */
+ const size_t dictSize /* note : = 0 if noDict */
+) {
+ /* Local Variables */
+ const BYTE *ip = (const BYTE *)source;
+ const BYTE *const iend = ip + inputSize;
+
+ BYTE *op = (BYTE *)dest;
+ BYTE *const oend = op + outputSize;
+ BYTE *cpy;
+ BYTE *oexit = op + targetOutputSize;
+ const BYTE *const lowLimit = lowPrefix - dictSize;
+
+ const BYTE *const dictEnd = (const BYTE *)dictStart + dictSize;
+ const size_t dec32table[] = {4, 1, 2, 1, 4, 4, 4, 4};
+ const size_t dec64table[] = {0, 0, 0, (size_t)-1, 0, 1, 2, 3};
+
+ const int safeDecode = (endOnInput == endOnInputSize);
+ const int checkOffset = ((safeDecode) && (dictSize < (int)(64 KB)));
+
+ /* Special cases */
+ if ((partialDecoding) && (oexit > oend - MFLIMIT))
+ oexit = oend - MFLIMIT; /* targetOutputSize too high => decode everything */
+ if ((endOnInput) && (unlikely(outputSize == 0)))
+ return ((inputSize == 1) && (*ip == 0)) ? 0 : -1; /* Empty output buffer */
+ if ((!endOnInput) && (unlikely(outputSize == 0))) return (*ip == 0 ? 1 : -1);
+
+ /* Main Loop */
+ while (1) {
+ unsigned token;
+ size_t length;
+ const BYTE *match;
+
+ /* get literal length */
+ token = *ip++;
+ if ((length = (token >> ML_BITS)) == RUN_MASK) {
+ unsigned s;
+ do {
+ s = *ip++;
+ length += s;
+ } while (likely((endOnInput) ? ip < iend - RUN_MASK : 1) && (s == 255));
+ if ((safeDecode) && unlikely((size_t)(op + length) < (size_t)(op)))
+ goto _output_error; /* overflow detection */
+ if ((safeDecode) && unlikely((size_t)(ip + length) < (size_t)(ip)))
+ goto _output_error; /* overflow detection */
+ }
+
+ /* copy literals */
+ cpy = op + length;
+ if (((endOnInput) && ((cpy > (partialDecoding ? oexit : oend - MFLIMIT)) ||
+ (ip + length > iend - (2 + 1 + LASTLITERALS)))) ||
+ ((!endOnInput) && (cpy > oend - COPYLENGTH))) {
+ if (partialDecoding) {
+ if (cpy > oend) goto _output_error; /* Error : write attempt beyond end of output buffer */
+ if ((endOnInput) && (ip + length > iend))
+ goto _output_error; /* Error : read attempt beyond end of input buffer */
+ } else {
+ if ((!endOnInput) && (cpy != oend))
+ goto _output_error; /* Error : block decoding must stop exactly there */
+ if ((endOnInput) && ((ip + length != iend) || (cpy > oend)))
+ goto _output_error; /* Error : input must be consumed */
+ }
+ memcpy(op, ip, length);
+ ip += length;
+ op += length;
+ break; /* Necessarily EOF, due to parsing restrictions */
+ }
+ LZ4_wildCopy(op, ip, cpy);
+ ip += length;
+ op = cpy;
+
+ /* get offset */
+ match = cpy - LZ4_readLE16(ip);
+ ip += 2;
+ if ((checkOffset) && (unlikely(match < lowLimit)))
+ goto _output_error; /* Error : offset outside destination buffer */
+
+ /* get matchlength */
+ length = token & ML_MASK;
+ if (length == ML_MASK) {
+ unsigned s;
+ do {
+ if ((endOnInput) && (ip > iend - LASTLITERALS)) goto _output_error;
+ s = *ip++;
+ length += s;
+ } while (s == 255);
+ if ((safeDecode) && unlikely((size_t)(op + length) < (size_t)op))
+ goto _output_error; /* overflow detection */
+ }
+ length += MINMATCH;
+
+ /* check external dictionary */
+ if ((dict == usingExtDict) && (match < lowPrefix)) {
+ if (unlikely(op + length > oend - LASTLITERALS))
+ goto _output_error; /* doesn't respect parsing restriction */
+
+ if (length <= (size_t)(lowPrefix - match)) {
+ /* match can be copied as a single segment from external dictionary */
+ match = dictEnd - (lowPrefix - match);
+ memmove(op, match, length);
+ op += length;
+ } else {
+ /* match encompass external dictionary and current segment */
+ size_t copySize = (size_t)(lowPrefix - match);
+ memcpy(op, dictEnd - copySize, copySize);
+ op += copySize;
+ copySize = length - copySize;
+ if (copySize > (size_t)(op - lowPrefix)) /* overlap within current segment */
+ {
+ BYTE *const endOfMatch = op + copySize;
+ const BYTE *copyFrom = lowPrefix;
+ while (op < endOfMatch) *op++ = *copyFrom++;
+ } else {
+ memcpy(op, lowPrefix, copySize);
+ op += copySize;
+ }
+ }
+ continue;
+ }
+
+ /* copy repeated sequence */
+ cpy = op + length;
+ if (unlikely((op - match) < 8)) {
+ const size_t dec64 = dec64table[op - match];
+ op[0] = match[0];
+ op[1] = match[1];
+ op[2] = match[2];
+ op[3] = match[3];
+ match += dec32table[op - match];
+ LZ4_copy4(op + 4, match);
+ op += 8;
+ match -= dec64;
+ } else {
+ LZ4_copy8(op, match);
+ op += 8;
+ match += 8;
+ }
+
+ if (unlikely(cpy > oend - 12)) {
+ if (cpy > oend - LASTLITERALS)
+ goto _output_error; /* Error : last LASTLITERALS bytes must be literals */
+ if (op < oend - 8) {
+ LZ4_wildCopy(op, match, oend - 8);
+ match += (oend - 8) - op;
+ op = oend - 8;
+ }
+ while (op < cpy) *op++ = *match++;
+ } else
+ LZ4_wildCopy(op, match, cpy);
+ op = cpy; /* correction */
+ }
+
+ /* end of decoding */
+ if (endOnInput)
+ return (int)(((char *)op) - dest); /* Nb of output bytes decoded */
+ else
+ return (int)(((const char *)ip) - source); /* Nb of input bytes read */
+
+/* Overflow error detected */
+_output_error:
+ return (int)(-(((const char *)ip) - source)) - 1;
+}
+
+int LZ4_decompress_safe(const char *source, char *dest, int compressedSize, int maxDecompressedSize) {
+ return LZ4_decompress_generic(source, dest, compressedSize, maxDecompressedSize, endOnInputSize, full, 0,
+ noDict, (BYTE *)dest, NULL, 0);
+}
+
+int LZ4_decompress_safe_partial(const char *source, char *dest, int compressedSize, int targetOutputSize,
+ int maxDecompressedSize) {
+ return LZ4_decompress_generic(source, dest, compressedSize, maxDecompressedSize, endOnInputSize, partial,
+ targetOutputSize, noDict, (BYTE *)dest, NULL, 0);
+}
+
+int LZ4_decompress_fast(const char *source, char *dest, int originalSize) {
+ return LZ4_decompress_generic(source, dest, 0, originalSize, endOnOutputSize, full, 0, withPrefix64k,
+ (BYTE *)(dest - 64 KB), NULL, 64 KB);
+}
+
+/* streaming decompression functions */
+
+typedef struct {
+ const BYTE *externalDict;
+ size_t extDictSize;
+ const BYTE *prefixEnd;
+ size_t prefixSize;
+} LZ4_streamDecode_t_internal;
+
+/*
+ * If you prefer dynamic allocation methods,
+ * LZ4_createStreamDecode()
+ * provides a pointer (void*) towards an initialized LZ4_streamDecode_t structure.
+ */
+LZ4_streamDecode_t *LZ4_createStreamDecode(void) {
+ LZ4_streamDecode_t *lz4s = (LZ4_streamDecode_t *)ALLOCATOR(1, sizeof(LZ4_streamDecode_t));
+ return lz4s;
+}
+
+int LZ4_freeStreamDecode(LZ4_streamDecode_t *LZ4_stream) {
+ FREEMEM(LZ4_stream);
+ return 0;
+}
+
+/*
+ * LZ4_setStreamDecode
+ * Use this function to instruct where to find the dictionary
+ * This function is not necessary if previous data is still available where it was decoded.
+ * Loading a size of 0 is allowed (same effect as no dictionary).
+ * Return : 1 if OK, 0 if error
+ */
+int LZ4_setStreamDecode(LZ4_streamDecode_t *LZ4_streamDecode, const char *dictionary, int dictSize) {
+ LZ4_streamDecode_t_internal *lz4sd = (LZ4_streamDecode_t_internal *)LZ4_streamDecode;
+ lz4sd->prefixSize = (size_t)dictSize;
+ lz4sd->prefixEnd = (const BYTE *)dictionary + dictSize;
+ lz4sd->externalDict = NULL;
+ lz4sd->extDictSize = 0;
+ return 1;
+}
+
+/*
+*_continue() :
+ These decoding functions allow decompression of multiple blocks in "streaming" mode.
+ Previously decoded blocks must still be available at the memory position where they were decoded.
+ If it's not possible, save the relevant part of decoded data into a safe buffer,
+ and indicate where it stands using LZ4_setStreamDecode()
+*/
+int LZ4_decompress_safe_continue(LZ4_streamDecode_t *LZ4_streamDecode, const char *source, char *dest,
+ int compressedSize, int maxOutputSize) {
+ LZ4_streamDecode_t_internal *lz4sd = (LZ4_streamDecode_t_internal *)LZ4_streamDecode;
+ int result;
+
+ if (lz4sd->prefixEnd == (BYTE *)dest) {
+ result = LZ4_decompress_generic(source, dest, compressedSize, maxOutputSize, endOnInputSize, full, 0,
+ usingExtDict, lz4sd->prefixEnd - lz4sd->prefixSize,
+ lz4sd->externalDict, lz4sd->extDictSize);
+ if (result <= 0) return result;
+ lz4sd->prefixSize += result;
+ lz4sd->prefixEnd += result;
+ } else {
+ lz4sd->extDictSize = lz4sd->prefixSize;
+ lz4sd->externalDict = lz4sd->prefixEnd - lz4sd->extDictSize;
+ result = LZ4_decompress_generic(source, dest, compressedSize, maxOutputSize, endOnInputSize, full, 0,
+ usingExtDict, (BYTE *)dest, lz4sd->externalDict, lz4sd->extDictSize);
+ if (result <= 0) return result;
+ lz4sd->prefixSize = result;
+ lz4sd->prefixEnd = (BYTE *)dest + result;
+ }
+
+ return result;
+}
+
+int LZ4_decompress_fast_continue(LZ4_streamDecode_t *LZ4_streamDecode, const char *source, char *dest,
+ int originalSize) {
+ LZ4_streamDecode_t_internal *lz4sd = (LZ4_streamDecode_t_internal *)LZ4_streamDecode;
+ int result;
+
+ if (lz4sd->prefixEnd == (BYTE *)dest) {
+ result = LZ4_decompress_generic(source, dest, 0, originalSize, endOnOutputSize, full, 0, usingExtDict,
+ lz4sd->prefixEnd - lz4sd->prefixSize, lz4sd->externalDict,
+ lz4sd->extDictSize);
+ if (result <= 0) return result;
+ lz4sd->prefixSize += originalSize;
+ lz4sd->prefixEnd += originalSize;
+ } else {
+ lz4sd->extDictSize = lz4sd->prefixSize;
+ lz4sd->externalDict = (BYTE *)dest - lz4sd->extDictSize;
+ result = LZ4_decompress_generic(source, dest, 0, originalSize, endOnOutputSize, full, 0, usingExtDict,
+ (BYTE *)dest, lz4sd->externalDict, lz4sd->extDictSize);
+ if (result <= 0) return result;
+ lz4sd->prefixSize = originalSize;
+ lz4sd->prefixEnd = (BYTE *)dest + originalSize;
+ }
+
+ return result;
+}
+
+/*
+Advanced decoding functions :
+*_usingDict() :
+ These decoding functions work the same as "_continue" ones,
+ the dictionary must be explicitly provided within parameters
+*/
+
+FORCE_INLINE int LZ4_decompress_usingDict_generic(const char *source, char *dest, int compressedSize,
+ int maxOutputSize, int safe, const char *dictStart,
+ int dictSize) {
+ if (dictSize == 0)
+ return LZ4_decompress_generic(source, dest, compressedSize, maxOutputSize, safe, full, 0, noDict,
+ (BYTE *)dest, NULL, 0);
+ if (dictStart + dictSize == dest) {
+ if (dictSize >= (int)(64 KB - 1))
+ return LZ4_decompress_generic(source, dest, compressedSize, maxOutputSize, safe, full, 0,
+ withPrefix64k, (BYTE *)dest - 64 KB, NULL, 0);
+ return LZ4_decompress_generic(source, dest, compressedSize, maxOutputSize, safe, full, 0, noDict,
+ (BYTE *)dest - dictSize, NULL, 0);
+ }
+ return LZ4_decompress_generic(source, dest, compressedSize, maxOutputSize, safe, full, 0, usingExtDict,
+ (BYTE *)dest, (const BYTE *)dictStart, dictSize);
+}
+
+int LZ4_decompress_safe_usingDict(const char *source, char *dest, int compressedSize, int maxOutputSize,
+ const char *dictStart, int dictSize) {
+ return LZ4_decompress_usingDict_generic(source, dest, compressedSize, maxOutputSize, 1, dictStart,
+ dictSize);
+}
+
+int LZ4_decompress_fast_usingDict(const char *source, char *dest, int originalSize, const char *dictStart,
+ int dictSize) {
+ return LZ4_decompress_usingDict_generic(source, dest, 0, originalSize, 0, dictStart, dictSize);
+}
+
+/* debug function */
+int LZ4_decompress_safe_forceExtDict(const char *source, char *dest, int compressedSize, int maxOutputSize,
+ const char *dictStart, int dictSize) {
+ return LZ4_decompress_generic(source, dest, compressedSize, maxOutputSize, endOnInputSize, full, 0,
+ usingExtDict, (BYTE *)dest, (const BYTE *)dictStart, dictSize);
+}
+
+/***************************************************
+ * Obsolete Functions
+ ***************************************************/
+/* obsolete compression functions */
+int LZ4_compress_limitedOutput(const char *source, char *dest, int inputSize, int maxOutputSize) {
+ return LZ4_compress_default(source, dest, inputSize, maxOutputSize);
+}
+int LZ4_compress(const char *source, char *dest, int inputSize) {
+ return LZ4_compress_default(source, dest, inputSize, LZ4_compressBound(inputSize));
+}
+int LZ4_compress_limitedOutput_withState(void *state, const char *src, char *dst, int srcSize, int dstSize) {
+ return LZ4_compress_fast_extState(state, src, dst, srcSize, dstSize, 1);
+}
+int LZ4_compress_withState(void *state, const char *src, char *dst, int srcSize) {
+ return LZ4_compress_fast_extState(state, src, dst, srcSize, LZ4_compressBound(srcSize), 1);
+}
+int LZ4_compress_limitedOutput_continue(LZ4_stream_t *LZ4_stream, const char *src, char *dst, int srcSize,
+ int maxDstSize) {
+ return LZ4_compress_fast_continue(LZ4_stream, src, dst, srcSize, maxDstSize, 1);
+}
+int LZ4_compress_continue(LZ4_stream_t *LZ4_stream, const char *source, char *dest, int inputSize) {
+ return LZ4_compress_fast_continue(LZ4_stream, source, dest, inputSize, LZ4_compressBound(inputSize), 1);
+}
+
+/*
+These function names are deprecated and should no longer be used.
+They are only provided here for compatibility with older user programs.
+- LZ4_uncompress is totally equivalent to LZ4_decompress_fast
+- LZ4_uncompress_unknownOutputSize is totally equivalent to LZ4_decompress_safe
+*/
+int LZ4_uncompress(const char *source, char *dest, int outputSize) {
+ return LZ4_decompress_fast(source, dest, outputSize);
+}
+int LZ4_uncompress_unknownOutputSize(const char *source, char *dest, int isize, int maxOutputSize) {
+ return LZ4_decompress_safe(source, dest, isize, maxOutputSize);
+}
+
+/* Obsolete Streaming functions */
+
+int LZ4_sizeofStreamState() { return LZ4_STREAMSIZE; }
+
+static void LZ4_init(LZ4_stream_t_internal *lz4ds, BYTE *base) {
+ MEM_INIT(lz4ds, 0, LZ4_STREAMSIZE);
+ lz4ds->bufferStart = base;
+}
+
+int LZ4_resetStreamState(void *state, char *inputBuffer) {
+ if ((((size_t)state) & 3) != 0) return 1; /* Error : pointer is not aligned on 4-bytes boundary */
+ LZ4_init((LZ4_stream_t_internal *)state, (BYTE *)inputBuffer);
+ return 0;
+}
+
+void *LZ4_create(char *inputBuffer) {
+ void *lz4ds = ALLOCATOR(8, LZ4_STREAMSIZE_U64);
+ LZ4_init((LZ4_stream_t_internal *)lz4ds, (BYTE *)inputBuffer);
+ return lz4ds;
+}
+
+char *LZ4_slideInputBuffer(void *LZ4_Data) {
+ LZ4_stream_t_internal *ctx = (LZ4_stream_t_internal *)LZ4_Data;
+ int dictSize = LZ4_saveDict((LZ4_stream_t *)LZ4_Data, (char *)ctx->bufferStart, 64 KB);
+ return (char *)(ctx->bufferStart + dictSize);
+}
+
+/* Obsolete streaming decompression functions */
+
+int LZ4_decompress_safe_withPrefix64k(const char *source, char *dest, int compressedSize, int maxOutputSize) {
+ return LZ4_decompress_generic(source, dest, compressedSize, maxOutputSize, endOnInputSize, full, 0,
+ withPrefix64k, (BYTE *)dest - 64 KB, NULL, 64 KB);
+}
+
+int LZ4_decompress_fast_withPrefix64k(const char *source, char *dest, int originalSize) {
+ return LZ4_decompress_generic(source, dest, 0, originalSize, endOnOutputSize, full, 0, withPrefix64k,
+ (BYTE *)dest - 64 KB, NULL, 64 KB);
+}
+
+#endif /* LZ4_COMMONDEFS_ONLY */
+
+} // namespace pulsar
diff --git a/pulsar-client-cpp/lib/lz4/lz4.h b/pulsar-client-cpp/lib/lz4/lz4.h
index c68232a..04f144c 100644
--- a/pulsar-client-cpp/lib/lz4/lz4.h
+++ b/pulsar-client-cpp/lib/lz4/lz4.h
@@ -34,9 +34,9 @@
*/
#pragma once
-#if defined(__cplusplus)
-extern "C" {
-#endif
+// Use "pulsar" namespace in order to avoid conflict with existing LZ4 symbols
+// when using pulsar static library.
+namespace pulsar {
/*
* lz4.h provides block compression functions, and gives full buffer control to programmer.
@@ -51,6 +51,7 @@ extern "C" {
#define LZ4_VERSION_MINOR 7 /* for new (non-breaking) interface capabilities */
#define LZ4_VERSION_RELEASE 1 /* for tweaks, bug-fixes, or development */
#define LZ4_VERSION_NUMBER (LZ4_VERSION_MAJOR * 100 * 100 + LZ4_VERSION_MINOR * 100 + LZ4_VERSION_RELEASE)
+
int LZ4_versionNumber(void);
/**************************************
@@ -69,8 +70,9 @@ int LZ4_versionNumber(void);
* Simple Functions
**************************************/
-int LZ4_compress_default(const char* source, char* dest, int sourceSize, int maxDestSize);
-int LZ4_decompress_safe(const char* source, char* dest, int compressedSize, int maxDecompressedSize);
+int LZ4_compress_default(const char *source, char *dest, int sourceSize, int maxDestSize);
+
+int LZ4_decompress_safe(const char *source, char *dest, int compressedSize, int maxDecompressedSize);
/*
LZ4_compress_default() :
@@ -127,7 +129,7 @@ LZ4_compress_fast() :
An acceleration value of "1" is the same as regular LZ4_compress_default()
Values <= 0 will be replaced by ACCELERATION_DEFAULT (see lz4.c), which is 1.
*/
-int LZ4_compress_fast(const char* source, char* dest, int sourceSize, int maxDestSize, int acceleration);
+int LZ4_compress_fast(const char *source, char *dest, int sourceSize, int maxDestSize, int acceleration);
/*
LZ4_compress_fast_extState() :
@@ -137,7 +139,8 @@ LZ4_compress_fast_extState() :
Then, provide it as 'void* state' to compression function.
*/
int LZ4_sizeofState(void);
-int LZ4_compress_fast_extState(void* state, const char* source, char* dest, int inputSize, int maxDestSize,
+
+int LZ4_compress_fast_extState(void *state, const char *source, char *dest, int inputSize, int maxDestSize,
int acceleration);
/*
@@ -151,7 +154,7 @@ LZ4_compress_destSize() :
return : Nb bytes written into 'dest' (necessarily <= targetDestSize)
or 0 if compression fails
*/
-int LZ4_compress_destSize(const char* source, char* dest, int* sourceSizePtr, int targetDestSize);
+int LZ4_compress_destSize(const char *source, char *dest, int *sourceSizePtr, int targetDestSize);
/*
LZ4_decompress_fast() :
@@ -166,7 +169,7 @@ result.
input).
Use this function in trusted environment only (data to decode comes from a trusted source).
*/
-int LZ4_decompress_fast(const char* source, char* dest, int originalSize);
+int LZ4_decompress_fast(const char *source, char *dest, int originalSize);
/*
LZ4_decompress_safe_partial() :
@@ -182,7 +185,7 @@ result.
This function never writes outside of output buffer, and never reads outside of input buffer. It
is therefore protected against malicious data packets
*/
-int LZ4_decompress_safe_partial(const char* source, char* dest, int compressedSize, int targetOutputSize,
+int LZ4_decompress_safe_partial(const char *source, char *dest, int compressedSize, int targetOutputSize,
int maxDecompressedSize);
/***********************************************
@@ -198,16 +201,16 @@ int LZ4_decompress_safe_partial(const char* source, char* dest, int compressedSi
* If you are using liblz4 as a DLL, please use below construction methods instead.
*/
// clang-format off
-typedef struct {
- long long table[LZ4_STREAMSIZE_U64];
-} LZ4_stream_t;
+ typedef struct {
+ long long table[LZ4_STREAMSIZE_U64];
+ } LZ4_stream_t;
// clang-format on
/*
* LZ4_resetStream
* Use this function to init an allocated LZ4_stream_t structure
*/
-void LZ4_resetStream(LZ4_stream_t* streamPtr);
+void LZ4_resetStream(LZ4_stream_t *streamPtr);
/*
* LZ4_createStream will allocate and initialize an LZ4_stream_t structure
@@ -215,8 +218,9 @@ void LZ4_resetStream(LZ4_stream_t* streamPtr);
* In the context of a DLL (liblz4), please use these methods rather than the static struct.
* They are more future proof, in case of a change of LZ4_stream_t size.
*/
-LZ4_stream_t* LZ4_createStream(void);
-int LZ4_freeStream(LZ4_stream_t* streamPtr);
+LZ4_stream_t *LZ4_createStream(void);
+
+int LZ4_freeStream(LZ4_stream_t *streamPtr);
/*
* LZ4_loadDict
@@ -225,7 +229,7 @@ int LZ4_freeStream(LZ4_stream_t* streamPtr);
* Loading a size of 0 is allowed.
* Return : dictionary size, in bytes (necessarily <= 64 KB)
*/
-int LZ4_loadDict(LZ4_stream_t* streamPtr, const char* dictionary, int dictSize);
+int LZ4_loadDict(LZ4_stream_t *streamPtr, const char *dictionary, int dictSize);
/*
* LZ4_compress_fast_continue
@@ -237,7 +241,7 @@ int LZ4_loadDict(LZ4_stream_t* streamPtr, const char* dictionary, int dictSize);
* If not, and if compressed data cannot fit into 'dst' buffer size, compression stops, and function returns a
* zero.
*/
-int LZ4_compress_fast_continue(LZ4_stream_t* streamPtr, const char* src, char* dst, int srcSize,
+int LZ4_compress_fast_continue(LZ4_stream_t *streamPtr, const char *src, char *dst, int srcSize,
int maxDstSize, int acceleration);
/*
@@ -248,7 +252,7 @@ int LZ4_compress_fast_continue(LZ4_stream_t* streamPtr, const char* src, char* d
* dictionary is immediately usable, you can therefore call LZ4_compress_fast_continue()
* Return : saved dictionary size in bytes (necessarily <= dictSize), or 0 if error
*/
-int LZ4_saveDict(LZ4_stream_t* streamPtr, char* safeBuffer, int dictSize);
+int LZ4_saveDict(LZ4_stream_t *streamPtr, char *safeBuffer, int dictSize);
/************************************************
* Streaming Decompression Functions
@@ -257,9 +261,9 @@ int LZ4_saveDict(LZ4_stream_t* streamPtr, char* safeBuffer, int dictSize);
#define LZ4_STREAMDECODESIZE_U64 4
#define LZ4_STREAMDECODESIZE (LZ4_STREAMDECODESIZE_U64 * sizeof(unsigned long long))
// clang-format off
-typedef struct {
- unsigned long long table[LZ4_STREAMDECODESIZE_U64];
-} LZ4_streamDecode_t;
+ typedef struct {
+ unsigned long long table[LZ4_STREAMDECODESIZE_U64];
+ } LZ4_streamDecode_t;
// clang-format on
/*
@@ -272,8 +276,9 @@ typedef struct {
* LZ4_createStreamDecode will allocate and initialize an LZ4_streamDecode_t structure
* LZ4_freeStreamDecode releases its memory.
*/
-LZ4_streamDecode_t* LZ4_createStreamDecode(void);
-int LZ4_freeStreamDecode(LZ4_streamDecode_t* LZ4_stream);
+LZ4_streamDecode_t *LZ4_createStreamDecode(void);
+
+int LZ4_freeStreamDecode(LZ4_streamDecode_t *LZ4_stream);
/*
* LZ4_setStreamDecode
@@ -281,7 +286,7 @@ int LZ4_freeStreamDecode(LZ4_streamDecode_t* LZ4_stream);
* Setting a size of 0 is allowed (same effect as reset).
* Return : 1 if OK, 0 if error
*/
-int LZ4_setStreamDecode(LZ4_streamDecode_t* LZ4_streamDecode, const char* dictionary, int dictSize);
+int LZ4_setStreamDecode(LZ4_streamDecode_t *LZ4_streamDecode, const char *dictionary, int dictSize);
/*
*_continue() :
@@ -303,9 +308,10 @@ block.
Whenever these conditions are not possible, save the last 64KB of decoded data into a safe buffer,
and indicate where it is saved using LZ4_setStreamDecode()
*/
-int LZ4_decompress_safe_continue(LZ4_streamDecode_t* LZ4_streamDecode, const char* source, char* dest,
+int LZ4_decompress_safe_continue(LZ4_streamDecode_t *LZ4_streamDecode, const char *source, char *dest,
int compressedSize, int maxDecompressedSize);
-int LZ4_decompress_fast_continue(LZ4_streamDecode_t* LZ4_streamDecode, const char* source, char* dest,
+
+int LZ4_decompress_fast_continue(LZ4_streamDecode_t *LZ4_streamDecode, const char *source, char *dest,
int originalSize);
/*
@@ -315,9 +321,10 @@ Advanced decoding functions :
a combination of LZ4_setStreamDecode() followed by LZ4_decompress_x_continue()
They are stand-alone. They don't need nor update an LZ4_streamDecode_t structure.
*/
-int LZ4_decompress_safe_usingDict(const char* source, char* dest, int compressedSize, int maxDecompressedSize,
- const char* dictStart, int dictSize);
-int LZ4_decompress_fast_usingDict(const char* source, char* dest, int originalSize, const char* dictStart,
+int LZ4_decompress_safe_usingDict(const char *source, char *dest, int compressedSize, int maxDecompressedSize,
+ const char *dictStart, int dictSize);
+
+int LZ4_decompress_fast_usingDict(const char *source, char *dest, int originalSize, const char *dictStart,
int dictSize);
/**************************************
@@ -346,13 +353,18 @@ int LZ4_decompress_fast_usingDict(const char* source, char* dest, int originalSi
/* Obsolete compression functions */
/* These functions are planned to start generate warnings by r131 approximately */
-int LZ4_compress(const char* source, char* dest, int sourceSize);
-int LZ4_compress_limitedOutput(const char* source, char* dest, int sourceSize, int maxOutputSize);
-int LZ4_compress_withState(void* state, const char* source, char* dest, int inputSize);
-int LZ4_compress_limitedOutput_withState(void* state, const char* source, char* dest, int inputSize,
+int LZ4_compress(const char *source, char *dest, int sourceSize);
+
+int LZ4_compress_limitedOutput(const char *source, char *dest, int sourceSize, int maxOutputSize);
+
+int LZ4_compress_withState(void *state, const char *source, char *dest, int inputSize);
+
+int LZ4_compress_limitedOutput_withState(void *state, const char *source, char *dest, int inputSize,
int maxOutputSize);
-int LZ4_compress_continue(LZ4_stream_t* LZ4_streamPtr, const char* source, char* dest, int inputSize);
-int LZ4_compress_limitedOutput_continue(LZ4_stream_t* LZ4_streamPtr, const char* source, char* dest,
+
+int LZ4_compress_continue(LZ4_stream_t *LZ4_streamPtr, const char *source, char *dest, int inputSize);
+
+int LZ4_compress_limitedOutput_continue(LZ4_stream_t *LZ4_streamPtr, const char *source, char *dest,
int inputSize, int maxOutputSize);
/* Obsolete decompression functions */
@@ -366,17 +378,28 @@ int LZ4_compress_limitedOutput_continue(LZ4_stream_t* LZ4_streamPtr, const char*
/* int LZ4_uncompress_unknownOutputSize (const char* source, char* dest, int isize, int maxOutputSize); */
/* Obsolete streaming functions; use new streaming interface whenever possible */
-LZ4_DEPRECATED("use LZ4_createStream() instead") void* LZ4_create(char* inputBuffer);
-LZ4_DEPRECATED("use LZ4_createStream() instead") int LZ4_sizeofStreamState(void);
-LZ4_DEPRECATED("use LZ4_resetStream() instead") int LZ4_resetStreamState(void* state, char* inputBuffer);
-LZ4_DEPRECATED("use LZ4_saveDict() instead") char* LZ4_slideInputBuffer(void* state);
+LZ4_DEPRECATED("use LZ4_createStream() instead")
+
+void *LZ4_create(char *inputBuffer);
+
+LZ4_DEPRECATED("use LZ4_createStream() instead")
+
+int LZ4_sizeofStreamState(void);
+
+LZ4_DEPRECATED("use LZ4_resetStream() instead")
+
+int LZ4_resetStreamState(void *state, char *inputBuffer);
+
+LZ4_DEPRECATED("use LZ4_saveDict() instead")
+
+char *LZ4_slideInputBuffer(void *state);
/* Obsolete streaming decoding functions */
LZ4_DEPRECATED("use LZ4_decompress_safe_usingDict() instead")
-int LZ4_decompress_safe_withPrefix64k(const char* src, char* dst, int compressedSize, int maxDstSize);
+
+int LZ4_decompress_safe_withPrefix64k(const char *src, char *dst, int compressedSize, int maxDstSize);
+
LZ4_DEPRECATED("use LZ4_decompress_fast_usingDict() instead")
-int LZ4_decompress_fast_withPrefix64k(const char* src, char* dst, int originalSize);
-#if defined(__cplusplus)
-}
-#endif
+int LZ4_decompress_fast_withPrefix64k(const char *src, char *dst, int originalSize);
+}
\ No newline at end of file