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//
// VMime library (http://www.vmime.org)
// Copyright (C) 2002 Vincent Richard <vincent@vmime.org>
//
// 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 3 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.
//
// Linking this library statically or dynamically with other modules is making
// a combined work based on this library. Thus, the terms and conditions of
// the GNU General Public License cover the whole combination.
//
#include "vmime/streamContentHandler.hpp"
#include "vmime/utility/outputStreamAdapter.hpp"
#include "vmime/utility/inputStreamStringAdapter.hpp"
#include "vmime/utility/seekableInputStream.hpp"
#include "vmime/utility/streamUtils.hpp"
namespace vmime {
streamContentHandler::streamContentHandler()
: m_encoding(NO_ENCODING),
m_stream(null),
m_length(0) {
}
streamContentHandler::streamContentHandler(
const shared_ptr <utility::inputStream>& is,
const size_t length,
const vmime::encoding& enc
) {
setData(is, length, enc);
}
streamContentHandler::~streamContentHandler() {
}
streamContentHandler::streamContentHandler(const streamContentHandler& cts)
: contentHandler(),
m_contentType(cts.m_contentType),
m_encoding(cts.m_encoding),
m_stream(cts.m_stream),
m_length(cts.m_length) {
}
shared_ptr <contentHandler> streamContentHandler::clone() const {
return make_shared <streamContentHandler>(*this);
}
streamContentHandler& streamContentHandler::operator=(const streamContentHandler& cts) {
m_contentType = cts.m_contentType;
m_encoding = cts.m_encoding;
m_stream = cts.m_stream;
m_length = cts.m_length;
return *this;
}
void streamContentHandler::setData(
const shared_ptr <utility::inputStream>& is,
const size_t length,
const vmime::encoding& enc
) {
m_encoding = enc;
m_length = length;
m_stream = is;
}
void streamContentHandler::generate(
utility::outputStream& os,
const vmime::encoding& enc,
const size_t maxLineLength
) const {
if (!m_stream) {
return;
}
// Managed data is already encoded
if (isEncoded()) {
// The data is already encoded but the encoding specified for
// the generation is different from the current one. We need
// to re-encode data: decode from input buffer to temporary
// buffer, and then re-encode to output stream...
if (m_encoding != enc) {
shared_ptr <utility::encoder::encoder> theDecoder = m_encoding.getEncoder();
shared_ptr <utility::encoder::encoder> theEncoder = enc.getEncoder();
theEncoder->getProperties()["maxlinelength"] = maxLineLength;
theEncoder->getProperties()["text"] = (m_contentType.getType() == mediaTypes::TEXT);
m_stream->reset(); // may not work...
std::ostringstream oss;
utility::outputStreamAdapter tempOut(oss);
theDecoder->decode(*m_stream, tempOut);
string str = oss.str();
utility::inputStreamStringAdapter tempIn(str);
theEncoder->encode(tempIn, os);
// No encoding to perform
} else {
m_stream->reset(); // may not work...
utility::bufferedStreamCopy(*m_stream, os);
}
// Need to encode data before
} else {
shared_ptr <utility::encoder::encoder> theEncoder = enc.getEncoder();
theEncoder->getProperties()["maxlinelength"] = maxLineLength;
theEncoder->getProperties()["text"] = (m_contentType.getType() == mediaTypes::TEXT);
m_stream->reset(); // may not work...
theEncoder->encode(*m_stream, os);
}
}
void streamContentHandler::extract(
utility::outputStream& os,
utility::progressListener* progress
) const {
if (!m_stream) {
return;
}
// No decoding to perform
if (!isEncoded()) {
m_stream->reset(); // may not work...
if (progress) {
utility::bufferedStreamCopy(*m_stream, os, getLength(), progress);
} else {
utility::bufferedStreamCopy(*m_stream, os);
}
// Need to decode data
} else {
shared_ptr <utility::encoder::encoder> theDecoder = m_encoding.getEncoder();
m_stream->reset(); // may not work...
utility::progressListenerSizeAdapter plsa(progress, getLength());
theDecoder->decode(*m_stream, os, &plsa);
}
}
void streamContentHandler::extractRaw(
utility::outputStream& os,
utility::progressListener* progress
) const {
if (!m_stream) {
return;
}
m_stream->reset(); // may not work...
if (progress) {
utility::bufferedStreamCopy(*m_stream, os, getLength(), progress);
} else {
utility::bufferedStreamCopy(*m_stream, os);
}
}
size_t streamContentHandler::getLength() const {
return m_length;
}
bool streamContentHandler::isEmpty() const {
return m_length == 0 || !m_stream;
}
bool streamContentHandler::isEncoded() const {
return m_encoding != NO_ENCODING;
}
const vmime::encoding& streamContentHandler::getEncoding() const {
return m_encoding;
}
bool streamContentHandler::isBuffered() const {
if (dynamicCast <utility::seekableInputStream>(m_stream)) {
return true;
}
// FIXME: some streams can be resetted
return false;
}
void streamContentHandler::setContentTypeHint(const mediaType& type) {
m_contentType = type;
}
const mediaType streamContentHandler::getContentTypeHint() const {
return m_contentType;
}
} // vmime
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