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//
// HTTPChunkedStream.cpp
//
// $Id: //poco/1.4/Net/src/HTTPChunkedStream.cpp#1 $
//
// Library: Net
// Package: HTTP
// Module: HTTPChunkedStream
//
// Copyright (c) 2005-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/Net/HTTPChunkedStream.h"
#include "Poco/Net/HTTPSession.h"
#include "Poco/NumberFormatter.h"
#include "Poco/NumberParser.h"
#include "Poco/Ascii.h"
using Poco::NumberFormatter;
using Poco::NumberParser;
namespace Poco {
namespace Net {
//
// HTTPChunkedStreamBuf
//
HTTPChunkedStreamBuf::HTTPChunkedStreamBuf(HTTPSession& session, openmode mode):
HTTPBasicStreamBuf(HTTPBufferAllocator::BUFFER_SIZE, mode),
_session(session),
_mode(mode),
_chunk(0)
{
}
HTTPChunkedStreamBuf::~HTTPChunkedStreamBuf()
{
}
void HTTPChunkedStreamBuf::close()
{
if (_mode & std::ios::out)
{
sync();
_session.write("0\r\n\r\n", 5);
}
}
int HTTPChunkedStreamBuf::readFromDevice(char* buffer, std::streamsize length)
{
static const int eof = std::char_traits<char>::eof();
if (_chunk == 0)
{
int ch = _session.get();
while (Poco::Ascii::isSpace(ch)) ch = _session.get();
std::string chunkLen;
while (Poco::Ascii::isHexDigit(ch)) { chunkLen += (char) ch; ch = _session.get(); }
while (ch != eof && ch != '\n') ch = _session.get();
unsigned chunk;
if (NumberParser::tryParseHex(chunkLen, chunk))
_chunk = (std::streamsize) chunk;
else
return eof;
}
if (_chunk > 0)
{
if (length > _chunk) length = _chunk;
int n = _session.read(buffer, length);
if (n > 0) _chunk -= n;
return n;
}
else
{
int ch = _session.get();
while (ch != eof && ch != '\n') ch = _session.get();
return 0;
}
}
int HTTPChunkedStreamBuf::writeToDevice(const char* buffer, std::streamsize length)
{
_chunkBuffer.clear();
NumberFormatter::appendHex(_chunkBuffer, length);
_chunkBuffer.append("\r\n", 2);
_chunkBuffer.append(buffer, static_cast<std::string::size_type>(length));
_chunkBuffer.append("\r\n", 2);
_session.write(_chunkBuffer.data(), static_cast<std::streamsize>(_chunkBuffer.size()));
return static_cast<int>(length);
}
//
// HTTPChunkedIOS
//
HTTPChunkedIOS::HTTPChunkedIOS(HTTPSession& session, HTTPChunkedStreamBuf::openmode mode):
_buf(session, mode)
{
poco_ios_init(&_buf);
}
HTTPChunkedIOS::~HTTPChunkedIOS()
{
try
{
_buf.close();
}
catch (...)
{
}
}
HTTPChunkedStreamBuf* HTTPChunkedIOS::rdbuf()
{
return &_buf;
}
//
// HTTPChunkedInputStream
//
Poco::MemoryPool HTTPChunkedInputStream::_pool(sizeof(HTTPChunkedInputStream));
HTTPChunkedInputStream::HTTPChunkedInputStream(HTTPSession& session):
HTTPChunkedIOS(session, std::ios::in),
std::istream(&_buf)
{
}
HTTPChunkedInputStream::~HTTPChunkedInputStream()
{
}
void* HTTPChunkedInputStream::operator new(std::size_t size)
{
return _pool.get();
}
void HTTPChunkedInputStream::operator delete(void* ptr)
{
_pool.release(ptr);
}
//
// HTTPChunkedOutputStream
//
Poco::MemoryPool HTTPChunkedOutputStream::_pool(sizeof(HTTPChunkedOutputStream));
HTTPChunkedOutputStream::HTTPChunkedOutputStream(HTTPSession& session):
HTTPChunkedIOS(session, std::ios::out),
std::ostream(&_buf)
{
}
HTTPChunkedOutputStream::~HTTPChunkedOutputStream()
{
}
void* HTTPChunkedOutputStream::operator new(std::size_t size)
{
return _pool.get();
}
void HTTPChunkedOutputStream::operator delete(void* ptr)
{
_pool.release(ptr);
}
} } // namespace Poco::Net