summaryrefslogtreecommitdiff
path: root/vendor/github.com/DataDog/zstd/zstd_legacy.h
diff options
context:
space:
mode:
Diffstat (limited to 'vendor/github.com/DataDog/zstd/zstd_legacy.h')
-rw-r--r--vendor/github.com/DataDog/zstd/zstd_legacy.h411
1 files changed, 0 insertions, 411 deletions
diff --git a/vendor/github.com/DataDog/zstd/zstd_legacy.h b/vendor/github.com/DataDog/zstd/zstd_legacy.h
deleted file mode 100644
index e5b383ee4..000000000
--- a/vendor/github.com/DataDog/zstd/zstd_legacy.h
+++ /dev/null
@@ -1,411 +0,0 @@
-/*
- * Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
- * All rights reserved.
- *
- * This source code is licensed under both the BSD-style license (found in the
- * LICENSE file in the root directory of this source tree) and the GPLv2 (found
- * in the COPYING file in the root directory of this source tree).
- * You may select, at your option, one of the above-listed licenses.
- */
-
-#ifndef ZSTD_LEGACY_H
-#define ZSTD_LEGACY_H
-
-#if defined (__cplusplus)
-extern "C" {
-#endif
-
-/* *************************************
-* Includes
-***************************************/
-#include "mem.h" /* MEM_STATIC */
-#include "error_private.h" /* ERROR */
-#include "zstd_internal.h" /* ZSTD_inBuffer, ZSTD_outBuffer, ZSTD_frameSizeInfo */
-
-#if !defined (ZSTD_LEGACY_SUPPORT) || (ZSTD_LEGACY_SUPPORT == 0)
-# undef ZSTD_LEGACY_SUPPORT
-# define ZSTD_LEGACY_SUPPORT 8
-#endif
-
-#if (ZSTD_LEGACY_SUPPORT <= 1)
-# include "zstd_v01.h"
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 2)
-# include "zstd_v02.h"
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 3)
-# include "zstd_v03.h"
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 4)
-# include "zstd_v04.h"
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 5)
-# include "zstd_v05.h"
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 6)
-# include "zstd_v06.h"
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 7)
-# include "zstd_v07.h"
-#endif
-
-/** ZSTD_isLegacy() :
- @return : > 0 if supported by legacy decoder. 0 otherwise.
- return value is the version.
-*/
-MEM_STATIC unsigned ZSTD_isLegacy(const void* src, size_t srcSize)
-{
- U32 magicNumberLE;
- if (srcSize<4) return 0;
- magicNumberLE = MEM_readLE32(src);
- switch(magicNumberLE)
- {
-#if (ZSTD_LEGACY_SUPPORT <= 1)
- case ZSTDv01_magicNumberLE:return 1;
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 2)
- case ZSTDv02_magicNumber : return 2;
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 3)
- case ZSTDv03_magicNumber : return 3;
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 4)
- case ZSTDv04_magicNumber : return 4;
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 5)
- case ZSTDv05_MAGICNUMBER : return 5;
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 6)
- case ZSTDv06_MAGICNUMBER : return 6;
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 7)
- case ZSTDv07_MAGICNUMBER : return 7;
-#endif
- default : return 0;
- }
-}
-
-
-MEM_STATIC unsigned long long ZSTD_getDecompressedSize_legacy(const void* src, size_t srcSize)
-{
- U32 const version = ZSTD_isLegacy(src, srcSize);
- if (version < 5) return 0; /* no decompressed size in frame header, or not a legacy format */
-#if (ZSTD_LEGACY_SUPPORT <= 5)
- if (version==5) {
- ZSTDv05_parameters fParams;
- size_t const frResult = ZSTDv05_getFrameParams(&fParams, src, srcSize);
- if (frResult != 0) return 0;
- return fParams.srcSize;
- }
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 6)
- if (version==6) {
- ZSTDv06_frameParams fParams;
- size_t const frResult = ZSTDv06_getFrameParams(&fParams, src, srcSize);
- if (frResult != 0) return 0;
- return fParams.frameContentSize;
- }
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 7)
- if (version==7) {
- ZSTDv07_frameParams fParams;
- size_t const frResult = ZSTDv07_getFrameParams(&fParams, src, srcSize);
- if (frResult != 0) return 0;
- return fParams.frameContentSize;
- }
-#endif
- return 0; /* should not be possible */
-}
-
-
-MEM_STATIC size_t ZSTD_decompressLegacy(
- void* dst, size_t dstCapacity,
- const void* src, size_t compressedSize,
- const void* dict,size_t dictSize)
-{
- U32 const version = ZSTD_isLegacy(src, compressedSize);
- (void)dst; (void)dstCapacity; (void)dict; (void)dictSize; /* unused when ZSTD_LEGACY_SUPPORT >= 8 */
- switch(version)
- {
-#if (ZSTD_LEGACY_SUPPORT <= 1)
- case 1 :
- return ZSTDv01_decompress(dst, dstCapacity, src, compressedSize);
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 2)
- case 2 :
- return ZSTDv02_decompress(dst, dstCapacity, src, compressedSize);
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 3)
- case 3 :
- return ZSTDv03_decompress(dst, dstCapacity, src, compressedSize);
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 4)
- case 4 :
- return ZSTDv04_decompress(dst, dstCapacity, src, compressedSize);
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 5)
- case 5 :
- { size_t result;
- ZSTDv05_DCtx* const zd = ZSTDv05_createDCtx();
- if (zd==NULL) return ERROR(memory_allocation);
- result = ZSTDv05_decompress_usingDict(zd, dst, dstCapacity, src, compressedSize, dict, dictSize);
- ZSTDv05_freeDCtx(zd);
- return result;
- }
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 6)
- case 6 :
- { size_t result;
- ZSTDv06_DCtx* const zd = ZSTDv06_createDCtx();
- if (zd==NULL) return ERROR(memory_allocation);
- result = ZSTDv06_decompress_usingDict(zd, dst, dstCapacity, src, compressedSize, dict, dictSize);
- ZSTDv06_freeDCtx(zd);
- return result;
- }
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 7)
- case 7 :
- { size_t result;
- ZSTDv07_DCtx* const zd = ZSTDv07_createDCtx();
- if (zd==NULL) return ERROR(memory_allocation);
- result = ZSTDv07_decompress_usingDict(zd, dst, dstCapacity, src, compressedSize, dict, dictSize);
- ZSTDv07_freeDCtx(zd);
- return result;
- }
-#endif
- default :
- return ERROR(prefix_unknown);
- }
-}
-
-MEM_STATIC ZSTD_frameSizeInfo ZSTD_findFrameSizeInfoLegacy(const void *src, size_t srcSize)
-{
- ZSTD_frameSizeInfo frameSizeInfo;
- U32 const version = ZSTD_isLegacy(src, srcSize);
- switch(version)
- {
-#if (ZSTD_LEGACY_SUPPORT <= 1)
- case 1 :
- ZSTDv01_findFrameSizeInfoLegacy(src, srcSize,
- &frameSizeInfo.compressedSize,
- &frameSizeInfo.decompressedBound);
- break;
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 2)
- case 2 :
- ZSTDv02_findFrameSizeInfoLegacy(src, srcSize,
- &frameSizeInfo.compressedSize,
- &frameSizeInfo.decompressedBound);
- break;
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 3)
- case 3 :
- ZSTDv03_findFrameSizeInfoLegacy(src, srcSize,
- &frameSizeInfo.compressedSize,
- &frameSizeInfo.decompressedBound);
- break;
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 4)
- case 4 :
- ZSTDv04_findFrameSizeInfoLegacy(src, srcSize,
- &frameSizeInfo.compressedSize,
- &frameSizeInfo.decompressedBound);
- break;
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 5)
- case 5 :
- ZSTDv05_findFrameSizeInfoLegacy(src, srcSize,
- &frameSizeInfo.compressedSize,
- &frameSizeInfo.decompressedBound);
- break;
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 6)
- case 6 :
- ZSTDv06_findFrameSizeInfoLegacy(src, srcSize,
- &frameSizeInfo.compressedSize,
- &frameSizeInfo.decompressedBound);
- break;
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 7)
- case 7 :
- ZSTDv07_findFrameSizeInfoLegacy(src, srcSize,
- &frameSizeInfo.compressedSize,
- &frameSizeInfo.decompressedBound);
- break;
-#endif
- default :
- frameSizeInfo.compressedSize = ERROR(prefix_unknown);
- frameSizeInfo.decompressedBound = ZSTD_CONTENTSIZE_ERROR;
- break;
- }
- return frameSizeInfo;
-}
-
-MEM_STATIC size_t ZSTD_findFrameCompressedSizeLegacy(const void *src, size_t srcSize)
-{
- ZSTD_frameSizeInfo frameSizeInfo = ZSTD_findFrameSizeInfoLegacy(src, srcSize);
- return frameSizeInfo.compressedSize;
-}
-
-MEM_STATIC size_t ZSTD_freeLegacyStreamContext(void* legacyContext, U32 version)
-{
- switch(version)
- {
- default :
- case 1 :
- case 2 :
- case 3 :
- (void)legacyContext;
- return ERROR(version_unsupported);
-#if (ZSTD_LEGACY_SUPPORT <= 4)
- case 4 : return ZBUFFv04_freeDCtx((ZBUFFv04_DCtx*)legacyContext);
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 5)
- case 5 : return ZBUFFv05_freeDCtx((ZBUFFv05_DCtx*)legacyContext);
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 6)
- case 6 : return ZBUFFv06_freeDCtx((ZBUFFv06_DCtx*)legacyContext);
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 7)
- case 7 : return ZBUFFv07_freeDCtx((ZBUFFv07_DCtx*)legacyContext);
-#endif
- }
-}
-
-
-MEM_STATIC size_t ZSTD_initLegacyStream(void** legacyContext, U32 prevVersion, U32 newVersion,
- const void* dict, size_t dictSize)
-{
- DEBUGLOG(5, "ZSTD_initLegacyStream for v0.%u", newVersion);
- if (prevVersion != newVersion) ZSTD_freeLegacyStreamContext(*legacyContext, prevVersion);
- switch(newVersion)
- {
- default :
- case 1 :
- case 2 :
- case 3 :
- (void)dict; (void)dictSize;
- return 0;
-#if (ZSTD_LEGACY_SUPPORT <= 4)
- case 4 :
- {
- ZBUFFv04_DCtx* dctx = (prevVersion != newVersion) ? ZBUFFv04_createDCtx() : (ZBUFFv04_DCtx*)*legacyContext;
- if (dctx==NULL) return ERROR(memory_allocation);
- ZBUFFv04_decompressInit(dctx);
- ZBUFFv04_decompressWithDictionary(dctx, dict, dictSize);
- *legacyContext = dctx;
- return 0;
- }
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 5)
- case 5 :
- {
- ZBUFFv05_DCtx* dctx = (prevVersion != newVersion) ? ZBUFFv05_createDCtx() : (ZBUFFv05_DCtx*)*legacyContext;
- if (dctx==NULL) return ERROR(memory_allocation);
- ZBUFFv05_decompressInitDictionary(dctx, dict, dictSize);
- *legacyContext = dctx;
- return 0;
- }
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 6)
- case 6 :
- {
- ZBUFFv06_DCtx* dctx = (prevVersion != newVersion) ? ZBUFFv06_createDCtx() : (ZBUFFv06_DCtx*)*legacyContext;
- if (dctx==NULL) return ERROR(memory_allocation);
- ZBUFFv06_decompressInitDictionary(dctx, dict, dictSize);
- *legacyContext = dctx;
- return 0;
- }
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 7)
- case 7 :
- {
- ZBUFFv07_DCtx* dctx = (prevVersion != newVersion) ? ZBUFFv07_createDCtx() : (ZBUFFv07_DCtx*)*legacyContext;
- if (dctx==NULL) return ERROR(memory_allocation);
- ZBUFFv07_decompressInitDictionary(dctx, dict, dictSize);
- *legacyContext = dctx;
- return 0;
- }
-#endif
- }
-}
-
-
-
-MEM_STATIC size_t ZSTD_decompressLegacyStream(void* legacyContext, U32 version,
- ZSTD_outBuffer* output, ZSTD_inBuffer* input)
-{
- DEBUGLOG(5, "ZSTD_decompressLegacyStream for v0.%u", version);
- switch(version)
- {
- default :
- case 1 :
- case 2 :
- case 3 :
- (void)legacyContext; (void)output; (void)input;
- return ERROR(version_unsupported);
-#if (ZSTD_LEGACY_SUPPORT <= 4)
- case 4 :
- {
- ZBUFFv04_DCtx* dctx = (ZBUFFv04_DCtx*) legacyContext;
- const void* src = (const char*)input->src + input->pos;
- size_t readSize = input->size - input->pos;
- void* dst = (char*)output->dst + output->pos;
- size_t decodedSize = output->size - output->pos;
- size_t const hintSize = ZBUFFv04_decompressContinue(dctx, dst, &decodedSize, src, &readSize);
- output->pos += decodedSize;
- input->pos += readSize;
- return hintSize;
- }
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 5)
- case 5 :
- {
- ZBUFFv05_DCtx* dctx = (ZBUFFv05_DCtx*) legacyContext;
- const void* src = (const char*)input->src + input->pos;
- size_t readSize = input->size - input->pos;
- void* dst = (char*)output->dst + output->pos;
- size_t decodedSize = output->size - output->pos;
- size_t const hintSize = ZBUFFv05_decompressContinue(dctx, dst, &decodedSize, src, &readSize);
- output->pos += decodedSize;
- input->pos += readSize;
- return hintSize;
- }
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 6)
- case 6 :
- {
- ZBUFFv06_DCtx* dctx = (ZBUFFv06_DCtx*) legacyContext;
- const void* src = (const char*)input->src + input->pos;
- size_t readSize = input->size - input->pos;
- void* dst = (char*)output->dst + output->pos;
- size_t decodedSize = output->size - output->pos;
- size_t const hintSize = ZBUFFv06_decompressContinue(dctx, dst, &decodedSize, src, &readSize);
- output->pos += decodedSize;
- input->pos += readSize;
- return hintSize;
- }
-#endif
-#if (ZSTD_LEGACY_SUPPORT <= 7)
- case 7 :
- {
- ZBUFFv07_DCtx* dctx = (ZBUFFv07_DCtx*) legacyContext;
- const void* src = (const char*)input->src + input->pos;
- size_t readSize = input->size - input->pos;
- void* dst = (char*)output->dst + output->pos;
- size_t decodedSize = output->size - output->pos;
- size_t const hintSize = ZBUFFv07_decompressContinue(dctx, dst, &decodedSize, src, &readSize);
- output->pos += decodedSize;
- input->pos += readSize;
- return hintSize;
- }
-#endif
- }
-}
-
-
-#if defined (__cplusplus)
-}
-#endif
-
-#endif /* ZSTD_LEGACY_H */
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-11-17 16:04:48 +0000