C LZMA SDK：LZMA2压缩文件的解压缩功能

这是压缩功能：

static void Compress2Inc(std::vector<unsigned char> &outBuf,const std::vector<unsigned char> &inBuf)
{
    CLzma2EncHandle enc = Lzma2Enc_Create(&SzAllocForLzma,&SzAllocForLzma2);
    assert(enc);

    CLzma2EncProps props;
    Lzma2EncProps_Init(&props);
    props.lzmaProps.writeEndMark = 1; // 0 or 1

    SRes res = Lzma2Enc_SetProps(enc,&props);
    assert(res == SZ_OK);

    unsigned propsSize = LZMA_PROPS_SIZE;
    outBuf.resize(propsSize);

    res = Lzma2Enc_WriteProperties(enc);
    //cout << res;
    //assert(res == SZ_OK && propsSize == LZMA_PROPS_SIZE);

    VectorInStream inStream = { &VectorInStream_Read,&inBuf,0 };
    VectorOutStream outStream = { &VectorOutStream_Write,&outBuf };

    res = Lzma2Enc_Encode(enc,(ISeqOutStream*)&outStream,(ISeqInStream*)&inStream,0);
    assert(res == SZ_OK);

    Lzma2Enc_Destroy(enc);
}

哪里：

static void *AllocForLzma2(void *,size_t size) { return BigAlloc(size); }
static void FreeForLzma2(void *,void *address) { BigFree(address); }
static ISzAlloc SzAllocForLzma2 = { AllocForLzma2,FreeForLzma2 };

static void *AllocForLzma(void *,size_t size) { return MyAlloc(size); }
static void FreeForLzma(void *,void *address) { MyFree(address); }
static ISzAlloc SzAllocForLzma = { AllocForLzma,FreeForLzma };

typedef struct
{
    ISeqInStream SeqInStream;
    const std::vector<unsigned char> *Buf;
    unsigned BufPos;
} VectorInStream;

SRes VectorInStream_Read(void *p,void *buf,size_t *size)
{
    VectorInStream *ctx = (VectorInStream*)p;
    *size = min(*size,ctx->Buf->size() - ctx->BufPos);
    if (*size)
        memcpy(buf,&(*ctx->Buf)[ctx->BufPos],*size);
    ctx->BufPos += *size;
    return SZ_OK;
}

typedef struct
{
    ISeqOutStream SeqOutStream;
    std::vector<unsigned char> *Buf;
} VectorOutStream;

size_t VectorOutStream_Write(void *p,const void *buf,size_t size)
{
    VectorOutStream *ctx = (VectorOutStream*)p;
    if (size)
    {
        unsigned oldSize = ctx->Buf->size();
        ctx->Buf->resize(oldSize + size);
        memcpy(&(*ctx->Buf)[oldSize],buf,size);
    }
    return size;
}

这是我到目前为止使用uncompression函数,但Lzma2Dec_DecodeToBuf函数返回错误代码1(SZ_ERROR_DATA),我在网上找不到任何关于此的内容.

static void Uncompress2Inc(std::vector<unsigned char> &outBuf,const std::vector<unsigned char> &inBuf)
{
    CLzma2Dec dec;
    Lzma2Dec_Construct(&dec);

    SRes res = Lzma2Dec_Allocate(&dec,outBuf.size(),&SzAllocForLzma);
    assert(res == SZ_OK);

    Lzma2Dec_Init(&dec);

    outBuf.resize(UNCOMPRESSED_SIZE);
    unsigned outPos = 0,inPos = LZMA_PROPS_SIZE;
    ELzmaStatus status;
    const unsigned BUF_SIZE = 10240;
    while (outPos < outBuf.size())
    {
        unsigned destLen = min(BUF_SIZE,outBuf.size() - outPos);
        unsigned srcLen  = min(BUF_SIZE,inBuf.size() - inPos);
        unsigned srcLenOld = srcLen,destLenOld = destLen;

        res = Lzma2Dec_DecodeToBuf(&dec,&outBuf[outPos],&destLen,&inBuf[inPos],&srcLen,(outPos + destLen == outBuf.size()) ? LZMA_FINISH_END : LZMA_FINISH_ANY,&status);

        assert(res == SZ_OK);
        inPos += srcLen;
        outPos += destLen;
        if (status == LZMA_STATUS_FINISHED_WITH_MARK)
            break;
    }

    Lzma2Dec_Free(&dec,&SzAllocForLzma);
    outBuf.resize(outPos);
}

我正在使用从here下载的Visual Studio 2008和LZMA SDK.有人here有完全相同的问题,但我无法使用他的代码……

有没有人使用LZMA SDK成功解压缩LZMA2压缩文件？

请帮忙！