Removed fileio_legacy; now legacy supports relies entirely on streaming API.
CLI legacy support now limited to v0.4+
diff --git a/NEWS b/NEWS
index 6c83c9c..b8f8cca 100644
--- a/NEWS
+++ b/NEWS
@@ -1,6 +1,7 @@
 v0.8.2
 Small decompression speed improvement
 API : ZDICT_getDictID(), ZSTD_sizeof_{CCtx, DCtx, CStream, DStream}()
+CLI Legacy support for formats v0.4+
 Enhanced documentation, by Przemyslaw Skibinski
 Fixed : compression fails on specific huge files, bug introduced in v0.8.1, reported by Jesse McGrew
 
diff --git a/programs/Makefile b/programs/Makefile
index 083b0f2..8985941 100644
--- a/programs/Makefile
+++ b/programs/Makefile
@@ -63,8 +63,8 @@
 ZSTDLEGACY_FILES:=
 else
 ZSTD_LEGACY_SUPPORT:=1
-CPPFLAGS  += -I$(ZSTDDIR)/legacy -I./legacy
-ZSTDLEGACY_FILES:= $(ZSTDDIR)/legacy/*.c legacy/fileio_legacy.c
+CPPFLAGS  += -I$(ZSTDDIR)/legacy
+ZSTDLEGACY_FILES:= $(ZSTDDIR)/legacy/*.c
 endif
 
 
diff --git a/programs/legacy/fileio_legacy.c b/programs/legacy/fileio_legacy.c
deleted file mode 100644
index 69d6db5..0000000
--- a/programs/legacy/fileio_legacy.c
+++ /dev/null
@@ -1,672 +0,0 @@
-/*
-  fileio_legacy.c - File i/o handler for legacy format
-  Copyright (C) Yann Collet 2015-2016
-
-  GPL v2 License
-
-  This program is free software; you can redistribute it and/or modify
-  it under the terms of the GNU General Public License as published by
-  the Free Software Foundation; either version 2 of the License, or
-  (at your option) any later version.
-
-  This program is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-  GNU General Public License for more details.
-
-  You should have received a copy of the GNU General Public License along
-  with this program; if not, write to the Free Software Foundation, Inc.,
-  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
-  You can contact the author at :
-  - zstd homepage : http://www.zstd.net
-  - zstd source repository : https://github.com/Cyan4973/zstd
-*/
-/*
-  Note : this file is not part of ZSTD compression library.
-  The license of ZSTD library is BSD.
-  The license of this file is GPLv2.
-*/
-
-/* *************************************
-*  Compiler Options
-***************************************/
-/* Disable some Visual warning messages */
-#ifdef _MSC_VER
-#  define _CRT_SECURE_NO_WARNINGS
-#  define _CRT_SECURE_NO_DEPRECATE     /* VS2005 */
-#  pragma warning(disable : 4127)      /* disable: C4127: conditional expression is constant */
-#endif
-
-#define _FILE_OFFSET_BITS 64   /* Large file support on 32-bits unix */
-#define _POSIX_SOURCE 1        /* enable fileno() within <stdio.h> on unix */
-
-
-/* *************************************
-*  Includes
-***************************************/
-#include <stdio.h>     /* fprintf, fopen, fread, _fileno, stdin, stdout */
-#include <stdlib.h>    /* malloc, free */
-#include <string.h>    /* strcmp, strlen */
-#include <time.h>      /* clock */
-#include <errno.h>     /* errno */
-#include "mem.h"
-#include "fileio_legacy.h"
-#include "zstd_legacy.h"  /* legacy support */
-
-
-/* *************************************
-*  OS-specific Includes
-***************************************/
-#if defined(MSDOS) || defined(OS2) || defined(WIN32) || defined(_WIN32) || defined(__CYGWIN__)
-#  include <fcntl.h>    /* _O_BINARY */
-#  include <io.h>       /* _setmode, _isatty */
-#  ifdef __MINGW32__
-   /* int _fileno(FILE *stream);   // seems no longer useful // MINGW somehow forgets to include this windows declaration into <stdio.h> */
-#  endif
-#  define SET_BINARY_MODE(file) { int unused = _setmode(_fileno(file), _O_BINARY); (void)unused; }
-#  define IS_CONSOLE(stdStream) _isatty(_fileno(stdStream))
-#else
-#  include <unistd.h>   /* isatty */
-#  define SET_BINARY_MODE(file)
-#  define IS_CONSOLE(stdStream) isatty(fileno(stdStream))
-#endif
-
-
-/* *************************************
-*  Constants
-***************************************/
-#define KB *(1U<<10)
-#define MB *(1U<<20)
-#define GB *(1U<<30)
-
-#define _1BIT  0x01
-#define _2BITS 0x03
-#define _3BITS 0x07
-#define _4BITS 0x0F
-#define _6BITS 0x3F
-#define _8BITS 0xFF
-
-#define BIT6  0x40
-#define BIT7  0x80
-
-#define FIO_FRAMEHEADERSIZE 5     /* as a define, because needed to allocated table on stack */
-#define FSE_CHECKSUM_SEED   0
-
-#define CACHELINE 64
-
-
-/* *************************************
-*  Macros
-***************************************/
-#define DISPLAY(...)         fprintf(stderr, __VA_ARGS__)
-#define DISPLAYLEVEL(l, ...) if (g_displayLevel>=l) { DISPLAY(__VA_ARGS__); }
-static U32 g_displayLevel = 1;   /* 0 : no display;   1: errors;   2 : + result + interaction + warnings;   3 : + progression;   4 : + information */
-
-#define DISPLAYUPDATE(l, ...) if (g_displayLevel>=l) { \
-            if ((FIO_GetMilliSpan(g_time) > refreshRate) || (g_displayLevel>=4)) \
-            { g_time = clock(); DISPLAY(__VA_ARGS__); \
-            if (g_displayLevel>=4) fflush(stdout); } }
-static const unsigned refreshRate = 150;
-static clock_t g_time = 0;
-
-
-/* *************************************
-*  Local Parameters
-***************************************/
-void FIO_legacy_setNotificationLevel(unsigned level) { g_displayLevel=level; }
-
-
-/* *************************************
-*  Exceptions
-***************************************/
-#ifndef DEBUG
-#  define DEBUG 0
-#endif
-#define DEBUGOUTPUT(...) if (DEBUG) DISPLAY(__VA_ARGS__);
-#define EXM_THROW(error, ...)                                             \
-{                                                                         \
-    DEBUGOUTPUT("Error defined at %s, line %i : \n", __FILE__, __LINE__); \
-    DISPLAYLEVEL(1, "Error %i : ", error);                                \
-    DISPLAYLEVEL(1, __VA_ARGS__);                                         \
-    DISPLAYLEVEL(1, "\n");                                                \
-    exit(error);                                                          \
-}
-
-
-/* *************************************
-*  Functions
-***************************************/
-static unsigned FIO_GetMilliSpan(clock_t nPrevious)
-{
-    clock_t nCurrent = clock();
-    unsigned nSpan = (unsigned)(((nCurrent - nPrevious) * 1000) / CLOCKS_PER_SEC);
-    return nSpan;
-}
-
-
-unsigned long long FIOv01_decompressFrame(FILE* foutput, FILE* finput)
-{
-    size_t const outBuffSize = 512 KB;
-    BYTE* outBuff = (BYTE*)malloc(outBuffSize);
-    size_t inBuffSize = 128 KB + 8;
-    BYTE inBuff[128 KB + 8];
-    BYTE* op = outBuff;
-    BYTE* const oend = outBuff + outBuffSize;
-    U64   filesize = 0;
-    size_t toRead;
-    ZSTDv01_Dctx* dctx = ZSTDv01_createDCtx();
-
-
-    /* init */
-    if (outBuff==NULL) EXM_THROW(41, "Error : not enough memory to decode legacy frame");
-
-    /* restore header, already read from input */
-    MEM_writeLE32(inBuff, ZSTDv01_magicNumberLE);
-    { size_t const sizeCheck = ZSTDv01_decompressContinue(dctx, NULL, 0, inBuff, sizeof(ZSTDv01_magicNumberLE));   /* Decode frame header */
-      if (ZSTDv01_isError(sizeCheck)) EXM_THROW(42, "Error decoding legacy header"); }
-
-    /* Main decompression Loop */
-    toRead = ZSTDv01_nextSrcSizeToDecompress(dctx);
-    while (toRead){
-        size_t readSize, decodedSize;
-
-        /* Fill input buffer */
-        if (toRead > inBuffSize)
-            EXM_THROW(43, "too large block");
-        readSize = fread(inBuff, 1, toRead, finput);
-        if (readSize != toRead)
-            EXM_THROW(44, "Read error");
-
-        /* Decode block */
-        decodedSize = ZSTDv01_decompressContinue(dctx, op, oend-op, inBuff, readSize);
-        if (ZSTDv01_isError(decodedSize)) EXM_THROW(45, "Decoding error : input corrupted");
-
-        if (decodedSize) {  /* not a header */
-            /* Write block */
-            { size_t const sizeCheck = fwrite(op, 1, decodedSize, foutput);
-              if (sizeCheck != decodedSize) EXM_THROW(46, "Write error : unable to write data block to destination file"); }
-            filesize += decodedSize;
-            op += decodedSize;
-            if (op==oend) op = outBuff;
-            DISPLAYUPDATE(2, "\rDecoded : %u MB...     ", (U32)(filesize>>20) );
-        }
-
-        /* prepare for next Block */
-        toRead = ZSTDv01_nextSrcSizeToDecompress(dctx);
-    }
-
-    /* release resources */
-    free(outBuff);
-    free(dctx);
-    return filesize;
-}
-
-
-unsigned long long FIOv02_decompressFrame(FILE* foutput, FILE* finput)
-{
-    size_t const outBuffSize = 512 KB;
-    BYTE* outBuff = (BYTE*)malloc(outBuffSize);
-    size_t inBuffSize = 128 KB + 8;
-    BYTE inBuff[128 KB + 8];
-    BYTE* op = outBuff;
-    BYTE* const oend = outBuff + outBuffSize;
-    U64   filesize = 0;
-    size_t toRead;
-    size_t sizeCheck;
-    ZSTDv02_Dctx* dctx = ZSTDv02_createDCtx();
-
-    /* init */
-    if (outBuff==NULL) EXM_THROW(41, "Error : not enough memory to decode legacy frame");
-
-    /* restore header, already read from input */
-    MEM_writeLE32(inBuff, ZSTDv02_magicNumber);
-    sizeCheck = ZSTDv02_decompressContinue(dctx, NULL, 0, inBuff, sizeof(ZSTDv02_magicNumber));   /* Decode frame header */
-    if (ZSTDv02_isError(sizeCheck)) EXM_THROW(42, "Error decoding legacy header");
-
-    /* Main decompression Loop */
-    toRead = ZSTDv02_nextSrcSizeToDecompress(dctx);
-    while (toRead) {
-        size_t readSize, decodedSize;
-
-        /* Fill input buffer */
-        if (toRead > inBuffSize)
-            EXM_THROW(43, "too large block");
-        readSize = fread(inBuff, 1, toRead, finput);
-        if (readSize != toRead)
-            EXM_THROW(44, "Read error");
-
-        /* Decode block */
-        decodedSize = ZSTDv02_decompressContinue(dctx, op, oend-op, inBuff, readSize);
-        if (ZSTDv02_isError(decodedSize)) EXM_THROW(45, "Decoding error : input corrupted");
-
-        if (decodedSize) {   /* not a header */
-            /* Write block */
-            sizeCheck = fwrite(op, 1, decodedSize, foutput);
-            if (sizeCheck != decodedSize) EXM_THROW(46, "Write error : unable to write data block to destination file");
-            filesize += decodedSize;
-            op += decodedSize;
-            if (op==oend) op = outBuff;
-            DISPLAYUPDATE(2, "\rDecoded : %u MB...     ", (U32)(filesize>>20) );
-        }
-
-        /* prepare for next Block */
-        toRead = ZSTDv02_nextSrcSizeToDecompress(dctx);
-    }
-
-    /* release resources */
-    free(outBuff);
-    free(dctx);
-    return filesize;
-}
-
-
-unsigned long long FIOv03_decompressFrame(FILE* foutput, FILE* finput)
-{
-    size_t const outBuffSize = 512 KB;
-    BYTE* outBuff = (BYTE*)malloc(outBuffSize);
-    size_t inBuffSize = 128 KB + 8;
-    BYTE inBuff[128 KB + 8];
-    BYTE* op = outBuff;
-    BYTE* const oend = outBuff + outBuffSize;
-    U64   filesize = 0;
-    size_t toRead;
-    size_t sizeCheck;
-    ZSTDv03_Dctx* dctx = ZSTDv03_createDCtx();
-
-    /* init */
-    if (outBuff==NULL) EXM_THROW(41, "Error : not enough memory to decode legacy frame");
-
-    /* restore header, already read from input */
-    MEM_writeLE32(inBuff, ZSTDv03_magicNumber);
-    sizeCheck = ZSTDv03_decompressContinue(dctx, NULL, 0, inBuff, sizeof(ZSTDv03_magicNumber));   /* Decode frame header */
-    if (ZSTDv03_isError(sizeCheck)) EXM_THROW(42, "Error decoding legacy header");
-
-    /* Main decompression Loop */
-    toRead = ZSTDv03_nextSrcSizeToDecompress(dctx);
-    while (toRead) {
-        size_t readSize, decodedSize;
-
-        /* Fill input buffer */
-        if (toRead > inBuffSize)
-            EXM_THROW(43, "too large block");
-        readSize = fread(inBuff, 1, toRead, finput);
-        if (readSize != toRead)
-            EXM_THROW(44, "Read error");
-
-        /* Decode block */
-        decodedSize = ZSTDv03_decompressContinue(dctx, op, oend-op, inBuff, readSize);
-        if (ZSTDv03_isError(decodedSize)) EXM_THROW(45, "Decoding error : input corrupted");
-
-        if (decodedSize) {   /* not a header */
-            /* Write block */
-            sizeCheck = fwrite(op, 1, decodedSize, foutput);
-            if (sizeCheck != decodedSize) EXM_THROW(46, "Write error : unable to write data block to destination file");
-            filesize += decodedSize;
-            op += decodedSize;
-            if (op==oend) op = outBuff;
-            DISPLAYUPDATE(2, "\rDecoded : %u MB...     ", (U32)(filesize>>20) );
-        }
-
-        /* prepare for next Block */
-        toRead = ZSTDv03_nextSrcSizeToDecompress(dctx);
-    }
-
-    /* release resources */
-    free(outBuff);
-    free(dctx);
-    return filesize;
-}
-
-
-/*=====    v0.4.x    =====*/
-
-typedef struct {
-    void*  srcBuffer;
-    size_t srcBufferSize;
-    void*  dstBuffer;
-    size_t dstBufferSize;
-    void*  dictBuffer;
-    size_t dictBufferSize;
-    ZBUFFv04_DCtx* dctx;
-} dRessv04_t;
-
-static dRessv04_t FIOv04_createDResources(void)
-{
-    dRessv04_t ress;
-
-    /* init */
-    ress.dctx = ZBUFFv04_createDCtx();
-    if (ress.dctx==NULL) EXM_THROW(60, "Can't create ZBUFF decompression context");
-    ress.dictBuffer = NULL; ress.dictBufferSize=0;
-
-    /* Allocate Memory */
-    ress.srcBufferSize = ZBUFFv04_recommendedDInSize();
-    ress.srcBuffer = malloc(ress.srcBufferSize);
-    ress.dstBufferSize = ZBUFFv04_recommendedDOutSize();
-    ress.dstBuffer = malloc(ress.dstBufferSize);
-    if (!ress.srcBuffer || !ress.dstBuffer) EXM_THROW(61, "Allocation error : not enough memory");
-
-    return ress;
-}
-
-static void FIOv04_freeDResources(dRessv04_t ress)
-{
-    size_t errorCode = ZBUFFv04_freeDCtx(ress.dctx);
-    if (ZBUFFv04_isError(errorCode)) EXM_THROW(69, "Error : can't free ZBUFF context resource : %s", ZBUFFv04_getErrorName(errorCode));
-    free(ress.srcBuffer);
-    free(ress.dstBuffer);
-    free(ress.dictBuffer);
-}
-
-
-unsigned long long FIOv04_decompressFrame(dRessv04_t ress,
-                                          FILE* foutput, FILE* finput)
-{
-    U64    frameSize = 0;
-    size_t readSize = 4;
-
-    MEM_writeLE32(ress.srcBuffer, ZSTDv04_magicNumber);
-    ZBUFFv04_decompressInit(ress.dctx);
-    ZBUFFv04_decompressWithDictionary(ress.dctx, ress.dictBuffer, ress.dictBufferSize);
-
-    while (1) {
-        /* Decode */
-        size_t sizeCheck;
-        size_t inSize=readSize, decodedSize=ress.dstBufferSize;
-        size_t toRead = ZBUFFv04_decompressContinue(ress.dctx, ress.dstBuffer, &decodedSize, ress.srcBuffer, &inSize);
-        if (ZBUFFv04_isError(toRead)) EXM_THROW(36, "Decoding error : %s", ZBUFFv04_getErrorName(toRead));
-        readSize -= inSize;
-
-        /* Write block */
-        sizeCheck = fwrite(ress.dstBuffer, 1, decodedSize, foutput);
-        if (sizeCheck != decodedSize) EXM_THROW(37, "Write error : unable to write data block to destination file");
-        frameSize += decodedSize;
-        DISPLAYUPDATE(2, "\rDecoded : %u MB...     ", (U32)(frameSize>>20) );
-
-        if (toRead == 0) break;
-        if (readSize) EXM_THROW(38, "Decoding error : should consume entire input");
-
-        /* Fill input buffer */
-        if (toRead > ress.srcBufferSize) EXM_THROW(34, "too large block");
-        readSize = fread(ress.srcBuffer, 1, toRead, finput);
-        if (readSize != toRead) EXM_THROW(35, "Read error");
-    }
-
-    return frameSize;
-}
-
-
-/*=====    v0.5.x    =====*/
-
-typedef struct {
-    void*  srcBuffer;
-    size_t srcBufferSize;
-    void*  dstBuffer;
-    size_t dstBufferSize;
-    const void*  dictBuffer;
-    size_t dictBufferSize;
-    ZBUFFv05_DCtx* dctx;
-} dRessv05_t;
-
-static dRessv05_t FIOv05_createDResources(void)
-{
-    dRessv05_t ress;
-
-    /* init */
-    ress.dctx = ZBUFFv05_createDCtx();
-    if (ress.dctx==NULL) EXM_THROW(60, "Can't create ZBUFF decompression context");
-    ress.dictBuffer = NULL; ress.dictBufferSize=0;
-
-    /* Allocate Memory */
-    ress.srcBufferSize = ZBUFFv05_recommendedDInSize();
-    ress.srcBuffer = malloc(ress.srcBufferSize);
-    ress.dstBufferSize = ZBUFFv05_recommendedDOutSize();
-    ress.dstBuffer = malloc(ress.dstBufferSize);
-    if (!ress.srcBuffer || !ress.dstBuffer) EXM_THROW(61, "Allocation error : not enough memory");
-
-    return ress;
-}
-
-static void FIOv05_freeDResources(dRessv05_t ress)
-{
-    size_t const errorCode = ZBUFFv05_freeDCtx(ress.dctx);
-    if (ZBUFFv05_isError(errorCode)) EXM_THROW(69, "Error : can't free ZBUFF context resource : %s", ZBUFFv05_getErrorName(errorCode));
-    free(ress.srcBuffer);
-    free(ress.dstBuffer);
-}
-
-
-unsigned long long FIOv05_decompressFrame(dRessv05_t ress,
-                                          FILE* foutput, FILE* finput)
-{
-    U64    frameSize = 0;
-    size_t readSize  = 4;
-
-    MEM_writeLE32(ress.srcBuffer, ZSTDv05_MAGICNUMBER);
-    ZBUFFv05_decompressInitDictionary(ress.dctx, ress.dictBuffer, ress.dictBufferSize);
-
-    while (1) {
-        /* Decode */
-        size_t inSize=readSize, decodedSize=ress.dstBufferSize;
-        size_t toRead = ZBUFFv05_decompressContinue(ress.dctx, ress.dstBuffer, &decodedSize, ress.srcBuffer, &inSize);
-        if (ZBUFFv05_isError(toRead)) EXM_THROW(36, "Decoding error : %s", ZBUFFv05_getErrorName(toRead));
-        readSize -= inSize;
-
-        /* Write block */
-        { size_t const sizeCheck = fwrite(ress.dstBuffer, 1, decodedSize, foutput);
-          if (sizeCheck != decodedSize) EXM_THROW(37, "Write error : unable to write data block to destination file"); }
-        frameSize += decodedSize;
-        DISPLAYUPDATE(2, "\rDecoded : %u MB...     ", (U32)(frameSize>>20) );
-
-        if (toRead == 0) break;
-        if (readSize) EXM_THROW(38, "Decoding error : should consume entire input");
-
-        /* Fill input buffer */
-        if (toRead > ress.srcBufferSize) EXM_THROW(34, "too large block");
-        readSize = fread(ress.srcBuffer, 1, toRead, finput);
-        if (readSize != toRead) EXM_THROW(35, "Read error");
-    }
-
-    return frameSize;
-}
-
-
-/*=====    v0.6.x    =====*/
-
-typedef struct {
-    void*  srcBuffer;
-    size_t srcBufferSize;
-    void*  dstBuffer;
-    size_t dstBufferSize;
-    const void*  dictBuffer;
-    size_t dictBufferSize;
-    ZBUFFv06_DCtx* dctx;
-} dRessv06_t;
-
-static dRessv06_t FIOv06_createDResources(void)
-{
-    dRessv06_t ress;
-
-    /* init */
-    ress.dctx = ZBUFFv06_createDCtx();
-    if (ress.dctx==NULL) EXM_THROW(60, "Can't create ZBUFF decompression context");
-    ress.dictBuffer = NULL; ress.dictBufferSize=0;
-
-    /* Allocate Memory */
-    ress.srcBufferSize = ZBUFFv06_recommendedDInSize();
-    ress.srcBuffer = malloc(ress.srcBufferSize);
-    ress.dstBufferSize = ZBUFFv06_recommendedDOutSize();
-    ress.dstBuffer = malloc(ress.dstBufferSize);
-    if (!ress.srcBuffer || !ress.dstBuffer) EXM_THROW(61, "Allocation error : not enough memory");
-
-    return ress;
-}
-
-static void FIOv06_freeDResources(dRessv06_t ress)
-{
-    size_t const errorCode = ZBUFFv06_freeDCtx(ress.dctx);
-    if (ZBUFFv06_isError(errorCode)) EXM_THROW(69, "Error : can't free ZBUFF context resource : %s", ZBUFFv06_getErrorName(errorCode));
-    free(ress.srcBuffer);
-    free(ress.dstBuffer);
-}
-
-
-unsigned long long FIOv06_decompressFrame(dRessv06_t ress,
-                                          FILE* foutput, FILE* finput)
-{
-    U64    frameSize = 0;
-    size_t readSize  = 4;
-
-    MEM_writeLE32(ress.srcBuffer, ZSTDv06_MAGICNUMBER);
-    ZBUFFv06_decompressInitDictionary(ress.dctx, ress.dictBuffer, ress.dictBufferSize);
-
-    while (1) {
-        /* Decode */
-        size_t inSize=readSize, decodedSize=ress.dstBufferSize;
-        size_t toRead = ZBUFFv06_decompressContinue(ress.dctx, ress.dstBuffer, &decodedSize, ress.srcBuffer, &inSize);
-        if (ZBUFFv06_isError(toRead)) EXM_THROW(36, "Decoding error : %s", ZBUFFv06_getErrorName(toRead));
-        readSize -= inSize;
-
-        /* Write block */
-        { size_t const sizeCheck = fwrite(ress.dstBuffer, 1, decodedSize, foutput);
-          if (sizeCheck != decodedSize) EXM_THROW(37, "Write error : unable to write data block to destination file"); }
-        frameSize += decodedSize;
-        DISPLAYUPDATE(2, "\rDecoded : %u MB...     ", (U32)(frameSize>>20) );
-
-        if (toRead == 0) break;
-        if (readSize) EXM_THROW(38, "Decoding error : should consume entire input");
-
-        /* Fill input buffer */
-        if (toRead > ress.srcBufferSize) EXM_THROW(34, "too large block");
-        readSize = fread(ress.srcBuffer, 1, toRead, finput);
-        if (readSize != toRead) EXM_THROW(35, "Read error");
-    }
-
-    return frameSize;
-}
-
-
-/*=====    v0.7.x    =====*/
-
-typedef struct {
-    void*  srcBuffer;
-    size_t srcBufferSize;
-    void*  dstBuffer;
-    size_t dstBufferSize;
-    const void*  dictBuffer;
-    size_t dictBufferSize;
-    ZBUFFv07_DCtx* dctx;
-} dRessv07_t;
-
-static dRessv07_t FIOv07_createDResources(void)
-{
-    dRessv07_t ress;
-
-    /* init */
-    ress.dctx = ZBUFFv07_createDCtx();
-    if (ress.dctx==NULL) EXM_THROW(60, "Can't create ZBUFF decompression context");
-    ress.dictBuffer = NULL; ress.dictBufferSize=0;
-
-    /* Allocate Memory */
-    ress.srcBufferSize = ZBUFFv07_recommendedDInSize();
-    ress.srcBuffer = malloc(ress.srcBufferSize);
-    ress.dstBufferSize = ZBUFFv07_recommendedDOutSize();
-    ress.dstBuffer = malloc(ress.dstBufferSize);
-    if (!ress.srcBuffer || !ress.dstBuffer) EXM_THROW(61, "Allocation error : not enough memory");
-
-    return ress;
-}
-
-static void FIOv07_freeDResources(dRessv07_t ress)
-{
-    size_t const errorCode = ZBUFFv07_freeDCtx(ress.dctx);
-    if (ZBUFFv07_isError(errorCode)) EXM_THROW(69, "Error : can't free ZBUFF context resource : %s", ZBUFFv07_getErrorName(errorCode));
-    free(ress.srcBuffer);
-    free(ress.dstBuffer);
-}
-
-
-unsigned long long FIOv07_decompressFrame(dRessv07_t ress,
-                                          FILE* foutput, FILE* finput)
-{
-    U64    frameSize = 0;
-    size_t readSize  = 4;
-
-    MEM_writeLE32(ress.srcBuffer, ZSTDv07_MAGICNUMBER);
-    ZBUFFv07_decompressInitDictionary(ress.dctx, ress.dictBuffer, ress.dictBufferSize);
-
-    while (1) {
-        /* Decode */
-        size_t inSize=readSize, decodedSize=ress.dstBufferSize;
-        size_t toRead = ZBUFFv07_decompressContinue(ress.dctx, ress.dstBuffer, &decodedSize, ress.srcBuffer, &inSize);
-        if (ZBUFFv07_isError(toRead)) EXM_THROW(36, "Decoding error : %s", ZBUFFv07_getErrorName(toRead));
-        readSize -= inSize;
-
-        /* Write block */
-        { size_t const sizeCheck = fwrite(ress.dstBuffer, 1, decodedSize, foutput);
-          if (sizeCheck != decodedSize) EXM_THROW(37, "Write error : unable to write data block to destination file"); }
-        frameSize += decodedSize;
-        DISPLAYUPDATE(2, "\rDecoded : %u MB...     ", (U32)(frameSize>>20) );
-
-        if (toRead == 0) break;
-        if (readSize) EXM_THROW(38, "Decoding error : should consume entire input");
-
-        /* Fill input buffer */
-        if (toRead > ress.srcBufferSize) EXM_THROW(34, "too large block");
-        readSize = fread(ress.srcBuffer, 1, toRead, finput);
-        if (readSize != toRead) EXM_THROW(35, "Read error");
-    }
-
-    return frameSize;
-}
-
-
-/*=====   General legacy dispatcher   =====*/
-
-unsigned long long FIO_decompressLegacyFrame(FILE* foutput, FILE* finput,
-                                             const void* dictBuffer, size_t dictSize,
-                                             U32 magicNumberLE)
-{
-    switch(magicNumberLE)
-    {
-        case ZSTDv01_magicNumberLE :
-            return FIOv01_decompressFrame(foutput, finput);
-        case ZSTDv02_magicNumber :
-            return FIOv02_decompressFrame(foutput, finput);
-        case ZSTDv03_magicNumber :
-            return FIOv03_decompressFrame(foutput, finput);
-        case ZSTDv04_magicNumber :
-            {   dRessv04_t r = FIOv04_createDResources();
-                unsigned long long const s = FIOv04_decompressFrame(r, foutput, finput);
-                FIOv04_freeDResources(r);
-                return s;
-            }
-        case ZSTDv05_MAGICNUMBER :
-            {   dRessv05_t r = FIOv05_createDResources();
-                r.dictBuffer = dictBuffer;
-                r.dictBufferSize = dictSize;
-                {   unsigned long long const s = FIOv05_decompressFrame(r, foutput, finput);
-                    FIOv05_freeDResources(r);
-                    return s;
-            }   }
-        case ZSTDv06_MAGICNUMBER :
-            {   dRessv06_t r = FIOv06_createDResources();
-                r.dictBuffer = dictBuffer;
-                r.dictBufferSize = dictSize;
-                {   unsigned long long const s = FIOv06_decompressFrame(r, foutput, finput);
-                    FIOv06_freeDResources(r);
-                    return s;
-            }   }
-        case ZSTDv07_MAGICNUMBER :
-            {   dRessv07_t r = FIOv07_createDResources();
-                r.dictBuffer = dictBuffer;
-                r.dictBufferSize = dictSize;
-                {   unsigned long long const s = FIOv07_decompressFrame(r, foutput, finput);
-                    FIOv07_freeDResources(r);
-                    return s;
-            }   }
-        default :
-            return ERROR(prefix_unknown);
-    }
-}
diff --git a/programs/legacy/fileio_legacy.h b/programs/legacy/fileio_legacy.h
deleted file mode 100644
index 13b3c4a..0000000
--- a/programs/legacy/fileio_legacy.h
+++ /dev/null
@@ -1,48 +0,0 @@
-/*
-  fileio.h - file i/o handler
-  Copyright (C) Yann Collet 2013-2015
-
-  GPL v2 License
-
-  This program is free software; you can redistribute it and/or modify
-  it under the terms of the GNU General Public License as published by
-  the Free Software Foundation; either version 2 of the License, or
-  (at your option) any later version.
-
-  This program is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-  GNU General Public License for more details.
-
-  You should have received a copy of the GNU General Public License along
-  with this program; if not, write to the Free Software Foundation, Inc.,
-  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
-  You can contact the author at :
-  - ZSTD source repository : https://github.com/Cyan4973/zstd
-  - Public forum : https://groups.google.com/forum/#!forum/lz4c
-*/
-#pragma once
-
-#if defined (__cplusplus)
-extern "C" {
-#endif
-
-
-/* *************************************
-*  Parameters
-***************************************/
-void FIO_legacy_setNotificationLevel(unsigned level);
-
-
-/* *************************************
-*  Stream/File functions
-***************************************/
-unsigned long long FIO_decompressLegacyFrame(FILE* foutput, FILE* finput,
-                                             const void* dictBuffer, size_t dictSize,
-                                             U32 magicNumberLE);
-
-
-#if defined (__cplusplus)
-}
-#endif
diff --git a/projects/cmake/programs/CMakeLists.txt b/projects/cmake/programs/CMakeLists.txt
index 163e944..26cd6c0 100644
--- a/projects/cmake/programs/CMakeLists.txt
+++ b/projects/cmake/programs/CMakeLists.txt
@@ -45,10 +45,9 @@
 IF (ZSTD_LEGACY_SUPPORT)
     SET(PROGRAMS_LEGACY_DIR ${PROGRAMS_DIR}/legacy)
     INCLUDE_DIRECTORIES(${PROGRAMS_LEGACY_DIR} ${LIBRARY_DIR}/legacy)
-    SET(ZSTD_FILEIO_LEGACY ${PROGRAMS_LEGACY_DIR}/fileio_legacy.c)
 ENDIF (ZSTD_LEGACY_SUPPORT)
 
-ADD_EXECUTABLE(zstd ${PROGRAMS_DIR}/zstdcli.c ${PROGRAMS_DIR}/fileio.c ${PROGRAMS_DIR}/bench.c ${PROGRAMS_DIR}/datagen.c ${PROGRAMS_DIR}/dibio.c ${ZSTD_FILEIO_LEGACY})
+ADD_EXECUTABLE(zstd ${PROGRAMS_DIR}/zstdcli.c ${PROGRAMS_DIR}/fileio.c ${PROGRAMS_DIR}/bench.c ${PROGRAMS_DIR}/datagen.c ${PROGRAMS_DIR}/dibio.c)
 TARGET_LINK_LIBRARIES(zstd libzstd_static)
 
 IF (UNIX)