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// file : butl/curl.txx -*- C++ -*-
// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#include <utility> // move(), forward()
#include <exception> // invalid_argument
namespace butl
{
template <typename I>
typename std::enable_if<curl::is_other<I>::value, I>::type curl::
map_in (I&& in, method_proto mp, io_data& d)
{
switch (mp)
{
case ftp_put:
{
d.options.push_back ("--upload-file");
d.options.push_back ("-");
break;
}
case http_post:
{
d.options.push_back ("--data-binary");
d.options.push_back ("@-");
break;
}
case ftp_get:
case http_get:
{
throw std::invalid_argument ("input specified for GET method");
}
}
return std::forward<I> (in);
}
template <typename O>
typename std::enable_if<curl::is_other<O>::value, O>::type curl::
map_out (O&& out, method_proto mp, io_data&)
{
switch (mp)
{
case ftp_get:
case http_get:
case http_post:
{
// Note: no need for any options, curl writes to stdout by default.
//
break;
}
case ftp_put:
{
throw std::invalid_argument ("output specified for PUT method");
}
}
return std::forward<O> (out);
}
template <typename C,
typename I,
typename O,
typename E,
typename... A>
curl::
curl (const C& cmdc,
I&& in,
O&& out,
E&& err,
method_type m,
const std::string& url,
A&&... options)
{
method_proto_options mpo;
method_proto mp (translate (m, url, mpo));
io_data in_data;
io_data out_data;
process& p (*this);
p = process_start (
cmdc,
map_in (std::forward<I> (in), mp, in_data),
map_out (std::forward<O> (out), mp, out_data),
std::forward<E> (err),
dir_path (),
"curl",
"-s", // Silent.
"-S", // But do show diagnostics.
mpo,
in_data.options,
out_data.options,
std::forward<A> (options)...,
url);
// Note: leaving this scope closes any open ends of the pipes in io_data.
}
}
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