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/* multipart.cpp
* Copyright (C) 2003 Tommi Maekitalo
*
* 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 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* is provided AS IS, WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, and
* NON-INFRINGEMENT. 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 St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include <tnt/multipart.h>
#include <tnt/httpheader.h>
#include <sstream>
#include <stdexcept>
#include <streambuf>
namespace
{
template <typename iterator>
class iterator_streambuf : public std::streambuf
{
public:
typedef unsigned long streamsize;
private:
iterator& begin;
iterator end;
char_type buffer[2];
protected:
std::streambuf::int_type overflow(std::streambuf::int_type ch)
{ return traits_type::eof(); }
int sync()
{
if (gptr() == buffer + 1)
++begin;
setg(0, 0, 0);
return 0;
}
std::streambuf::int_type underflow()
{
if (begin == end)
return traits_type::eof();
if (gptr() == buffer + 1)
++begin;
buffer[0] = *begin;
setg(buffer, buffer, buffer + 1);
return buffer[0];
}
public:
iterator_streambuf(iterator& b, iterator e)
: begin(b),
end(e)
{ }
};
}
namespace tnt
{
Partheader::return_type Partheader::onField(const std::string& name,
const std::string& value)
{
if (name == "Content-Disposition:")
{
std::istringstream in(value);
in >> cd;
if (!in)
return FAIL;
}
return Messageheader::onField(name, value);
}
Part::Part(const_iterator b, const_iterator e)
{
iterator_streambuf<const_iterator> buf(b, e);
std::istream in(&buf);
in >> header;
if (!in)
throw std::runtime_error("error in parsing message-header");
in.sync();
bodyBegin = b;
bodyEnd = e;
}
std::string Part::getHeader(const std::string& key) const
{
Messageheader::const_iterator it = header.find(key);
if (it != header.end())
return it->second;
return std::string();
}
std::string Partheader::getMimetype() const
{
const_iterator it = find(httpheader::contentType);
return it == end() ? std::string() : it->second;
}
void Multipart::set(const std::string& boundary, const std::string& b)
{
body = b;
std::string::size_type bpos = body.find(boundary);
while (bpos != std::string::npos)
{
bpos += boundary.size();
if (body[bpos] == '\r')
++bpos;
if (body[bpos] == '\n')
++bpos;
std::string::size_type bend = body.find(boundary, bpos);
if (bend == std::string::npos)
return;
std::string::size_type nbegin = bend;
if (body[bend-1] == '-')
--bend;
if (body[bend-1] == '-')
--bend;
if (body[bend-1] == '\n')
--bend;
if (body[bend-1] == '\r')
--bend;
parts.push_back(part_type(body.begin() + bpos, body.begin() + bend));
bpos = nbegin;
}
}
Multipart::const_iterator Multipart::find(const std::string& part_name,
Multipart::const_iterator start) const
{
for (const_iterator it = start; it != end(); ++it)
if (it->getName() == part_name)
return it;
return end();
}
}
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