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// file : butl/sendmail -*- C++ -*-
// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#ifndef BUTL_SENDMAIL
#define BUTL_SENDMAIL
#include <string>
#include <butl/export>
#include <butl/process>
#include <butl/fdstream>
#include <butl/small-vector>
namespace butl
{
// Send email using the sendmail program.
//
// Write the body of the email to out. Note that you must explicitly close
// it before calling wait(). Throw process_error and io_error (both derive
// from system_error) in case of errors.
//
// Typical usage:
//
// try
// {
// sendmail sm (2, // Diagnostics to stderr.
// "", // Default From: address.
// "Test subject",
// {"test@example.com"});
//
// sm.out << "Test body" << endl;
//
// sm.close ();
//
// if (!sm.wait ())
// ... // sendmail returned non-zero status.
// }
// catch (const std::system_error& e)
// {
// cerr << "sendmail error: " << e << endl;
// }
//
class LIBBUTL_EXPORT sendmail: public process
{
public:
ofdstream out;
// Notes:
//
// - If from is empty then the process user's address is used.
//
// - The to/cc/bcc addressed should already be quoted if required.
//
using recipients_type = small_vector<std::string, 1>;
template <typename E, typename... O>
sendmail (E&& err,
const std::string& from,
const std::string& subject,
const recipients_type& to,
const recipients_type& cc = recipients_type (),
const recipients_type& bcc = recipients_type (),
O&&... options);
// Version with the command line callback (see process_run() for
// details).
//
template <typename C, typename E, typename... O>
sendmail (const C&,
E&& err,
const std::string& from,
const std::string& subject,
const recipients_type& to,
const recipients_type& cc = recipients_type (),
const recipients_type& bcc = recipients_type (),
O&&... options);
private:
void
headers (const std::string& from,
const std::string& subj,
const recipients_type& to,
const recipients_type& cc,
const recipients_type& bcc);
};
}
#include <butl/sendmail.ixx>
#endif // BUTL_SENDMAIL
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