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added eof initializing in constuctor

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This commit is contained in:
a.palagashvili 2020-11-04 15:45:37 +03:00
parent 986d13df3a
commit 53a064b6e3
1 changed files with 21 additions and 32 deletions
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53
src/IO/LzmaReadBuffer.cpp
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@ -1,13 +1,11 @@
#include <IO/LzmaReadBuffer.h>
namespace DB
{
namespace ErrorCodes
{
namespace DB {
namespace ErrorCodes {
extern const int LZMA_STREAM_DECODER_FAILED;
}
LzmaReadBuffer::LzmaReadBuffer(std::unique_ptr<ReadBuffer> in_, size_t buf_size, char * existing_memory, size_t alignment)
: BufferWithOwnMemory<ReadBuffer>(buf_size, existing_memory, alignment), in(std::move(in_))
LzmaReadBuffer::LzmaReadBuffer(std::unique_ptr<ReadBuffer> in_, size_t buf_size, char* existing_memory, size_t alignment)
: BufferWithOwnMemory<ReadBuffer>(buf_size, existing_memory, alignment), in(std::move(in_)), eof(false)
{
lstr = LZMA_STREAM_INIT;
lstr.allocator = nullptr;
@ -22,10 +20,9 @@ LzmaReadBuffer::LzmaReadBuffer(std::unique_ptr<ReadBuffer> in_, size_t buf_size,
lzma_ret ret = lzma_stream_decoder(&lstr, memlimit, LZMA_CONCATENATED);
// lzma does not provide api for converting error code to string unlike zlib
if (ret != LZMA_OK)
throw Exception(
std::string("lzma_stream_decoder initialization failed: error code: ") + std::to_string(ret)
+ "; lzma version: " + LZMA_VERSION_STRING,
ErrorCodes::LZMA_STREAM_DECODER_FAILED);
throw Exception(std::string("lzma_stream_decoder initialization failed: error code: ") + std::to_string(ret) + "; lzma version: "
+ LZMA_VERSION_STRING,
ErrorCodes::LZMA_STREAM_DECODER_FAILED);
}
LzmaReadBuffer::~LzmaReadBuffer()
@ -38,14 +35,12 @@ bool LzmaReadBuffer::nextImpl()
if (eof)
return false;
if (!lstr.avail_in)
{
if (!lstr.avail_in) {
in->nextIfAtEnd();
lstr.next_in = reinterpret_cast<unsigned char *>(in->position());
lstr.next_in = reinterpret_cast<unsigned char*>(in->position());
lstr.avail_in = in->buffer().end() - in->position();
}
lstr.next_out = reinterpret_cast<unsigned char *>(internal_buffer.begin());
lstr.next_out = reinterpret_cast<unsigned char*>(internal_buffer.begin());
lstr.avail_out = internal_buffer.size();
lzma_ret ret = lzma_code(&lstr, LZMA_RUN);
@ -53,29 +48,23 @@ bool LzmaReadBuffer::nextImpl()
in->position() = in->buffer().end() - lstr.avail_in;
working_buffer.resize(internal_buffer.size() - lstr.avail_out);
if (ret == LZMA_STREAM_END)
{
if (in->eof())
{
if (ret == LZMA_STREAM_END) {
if (in->eof()) {
eof = true;
return working_buffer.size() != 0;
}
else
{
throw Exception(
ErrorCodes::LZMA_STREAM_DECODER_FAILED,
"lzma decoder finished, but stream is still alive: error code: {}; lzma version: {}",
ret,
LZMA_VERSION_STRING);
} else {
throw Exception(ErrorCodes::LZMA_STREAM_DECODER_FAILED,
"lzma decoder finished, but stream is still alive: error code: {}; lzma version: {}",
ret,
LZMA_VERSION_STRING);
}
}
if (ret != LZMA_OK)
throw Exception(
ErrorCodes::LZMA_STREAM_DECODER_FAILED,
"lzma_stream_decoder failed: error code: error codeL {}; lzma version: {}",
ret,
LZMA_VERSION_STRING);
throw Exception(ErrorCodes::LZMA_STREAM_DECODER_FAILED,
"lzma_stream_decoder failed: error code: error codeL {}; lzma version: {}",
ret,
LZMA_VERSION_STRING);
return true;
}