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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/component.hpp"
#include "vmime/base.hpp"
#include "vmime/utility/streamUtils.hpp"
#include "vmime/utility/inputStreamStringAdapter.hpp"
#include "vmime/utility/outputStreamAdapter.hpp"
#include <sstream>
namespace vmime {
component::component()
: m_parsedOffset(0), m_parsedLength(0) {
}
component::~component() {
}
void component::parse(
const shared_ptr <utility::inputStream>& inputStream,
const size_t length
) {
parse(inputStream, 0, length, NULL);
}
void component::parse(
const shared_ptr <utility::inputStream>& inputStream,
const size_t position,
const size_t end,
size_t* newPosition) {
parse(parsingContext::getDefaultContext(), inputStream, position, end, newPosition);
}
void component::parse(
const parsingContext& ctx,
const shared_ptr <utility::inputStream>& inputStream,
const size_t position,
const size_t end,
size_t* newPosition
) {
m_parsedOffset = m_parsedLength = 0;
shared_ptr <utility::seekableInputStream> seekableStream =
dynamicCast <utility::seekableInputStream>(inputStream);
if (!seekableStream || end == 0) {
// Read the whole stream into a buffer
std::ostringstream oss;
utility::outputStreamAdapter ossAdapter(oss);
utility::bufferedStreamCopyRange(*inputStream, ossAdapter, position, end - position);
const string buffer = oss.str();
parseImpl(ctx, buffer, 0, buffer.length(), NULL);
} else {
shared_ptr <utility::parserInputStreamAdapter> parser =
make_shared <utility::parserInputStreamAdapter>(seekableStream);
parseImpl(ctx, parser, position, end, newPosition);
}
}
void component::parse(const string& buffer) {
m_parsedOffset = m_parsedLength = 0;
parseImpl(parsingContext::getDefaultContext(), buffer, 0, buffer.length(), NULL);
}
void component::parse(const parsingContext& ctx, const string& buffer) {
m_parsedOffset = m_parsedLength = 0;
parseImpl(ctx, buffer, 0, buffer.length(), NULL);
}
void component::parse(
const string& buffer,
const size_t position,
const size_t end,
size_t* newPosition
) {
m_parsedOffset = m_parsedLength = 0;
parseImpl(parsingContext::getDefaultContext(), buffer, position, end, newPosition);
}
void component::parse(
const parsingContext& ctx,
const string& buffer,
const size_t position,
const size_t end, size_t* newPosition
) {
m_parsedOffset = m_parsedLength = 0;
parseImpl(ctx, buffer, position, end, newPosition);
}
void component::offsetParsedBounds(const size_t offset) {
// Offset parsed bounds of this component
if (m_parsedLength != 0) {
m_parsedOffset += offset;
}
// Offset parsed bounds of our children
std::vector <shared_ptr <component> > children = getChildComponents();
for (size_t i = 0, n = children.size() ; i < n ; ++i) {
children[i]->offsetParsedBounds(offset);
}
}
void component::parseImpl(
const parsingContext& ctx,
const shared_ptr <utility::parserInputStreamAdapter>& parser,
const size_t position,
const size_t end,
size_t* newPosition
) {
// This is the default implementation for parsing from an input stream:
// actually, we extract the substring and use the "parse from string" implementation
const string buffer = parser->extract(position, end);
parseImpl(ctx, buffer, 0, buffer.length(), newPosition);
// Recursivey offset parsed bounds on children
if (position != 0) {
offsetParsedBounds(position);
}
if (newPosition) {
*newPosition += position;
}
}
void component::parseImpl(
const parsingContext& ctx,
const string& buffer,
const size_t position,
const size_t end,
size_t* newPosition) {
// This is the default implementation for parsing from a string:
// actually, we encapsulate the string buffer in an input stream, then use
// the "parse from input stream" implementation
shared_ptr <utility::seekableInputStream> stream =
make_shared <utility::inputStreamStringAdapter>(buffer);
shared_ptr <utility::parserInputStreamAdapter> parser =
make_shared <utility::parserInputStreamAdapter>(stream);
parseImpl(ctx, parser, position, end, newPosition);
}
const string component::generate(
const size_t maxLineLength,
const size_t curLinePos
) const {
std::ostringstream oss;
utility::outputStreamAdapter adapter(oss);
generationContext ctx(generationContext::getDefaultContext());
ctx.setMaxLineLength(maxLineLength);
generateImpl(ctx, adapter, curLinePos, NULL);
return oss.str();
}
void component::generate(
utility::outputStream& os,
const size_t curLinePos,
size_t* newLinePos
) const {
generateImpl(generationContext::getDefaultContext(), os, curLinePos, newLinePos);
}
void component::generate(
const generationContext& ctx,
utility::outputStream& outputStream,
const size_t curLinePos,
size_t* newLinePos
) const {
generateImpl(ctx, outputStream, curLinePos, newLinePos);
}
size_t component::getParsedOffset() const {
return m_parsedOffset;
}
size_t component::getParsedLength() const {
return m_parsedLength;
}
void component::setParsedBounds(const size_t start, const size_t end) {
m_parsedOffset = start;
m_parsedLength = end - start;
}
size_t component::getGeneratedSize(const generationContext& ctx) {
std::vector <shared_ptr <component> > children = getChildComponents();
size_t totalSize = 0;
for (std::vector <shared_ptr <component> >::iterator it = children.begin() ;
it != children.end() ; ++it) {
totalSize += (*it)->getGeneratedSize(ctx);
}
return totalSize;
}
} // vmime
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