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// file : bpkg/help.cxx -*- C++ -*-
// copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#include <bpkg/help>
#include <cassert>
#include <iostream>
#include <bpkg/types>
#include <bpkg/diagnostics>
#include <bpkg/bpkg-options>
using namespace std;
namespace bpkg
{
static void
help ()
{
ostream& o (cout);
o << "usage: bpkg --help" << endl
<< " bpkg --version" << endl
<< " bpkg [<common-options>] <command> [<command-options>] " <<
"[<command-args>]" << endl
<< endl;
o << "The commands are:" << endl
<< endl;
bpkg_commands::print_short_usage (o);
o << endl;
o << "The help topics are:" << endl
<< endl;
bpkg_topics::print_short_usage (o);
o << endl;
o << "The common options are:" << endl
<< endl;
common_options::print_short_usage (o);
o << endl;
o << "The common options can also be specified as part of the command-" <<
"specific ones."<< endl;
}
void
help (const help_options&, const string& t, void (*usage) (std::ostream&))
{
ostream& o (cout);
if (usage != nullptr) // Command.
{
usage (o);
o << endl
<< "The common options are summarized below. For details, see the " <<
"'options' help" << endl
<< "topic." << endl
<< endl;
common_options::print_short_usage (o);
}
else if (t.empty ()) // General help.
help ();
else if (t == "options") // Help topics.
{
common_options::print_long_usage (cout);
}
else
fail << "unknown bpkg command/help topic '" << t << "'" <<
info << "run 'bpkg help' for more information";
}
}
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