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/* vim: set sw=4 sts=4 et foldmethod=syntax : */
/*
* Copyright (c) 2012 David Leverton
*
* This file is part of the Paludis package manager. Paludis is free software;
* you can redistribute it and/or modify it under the terms of the GNU General
* Public License version 2, as published by the Free Software Foundation.
*
* Paludis 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., 59 Temple
* Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "cmd_print_checksum_algorithms.hh"
#include "command_command_line.hh"
#include <paludis/util/digest_registry.hh>
#include <paludis/args/do_help.hh>
#include <iostream>
#include <cstdlib>
using namespace paludis;
using namespace paludis::cave;
namespace
{
struct PrintChecksumAlgorithmsCommandLine :
CaveCommandCommandLine
{
PrintChecksumAlgorithmsCommandLine()
{
add_usage_line("");
add_see_also("cave-print-checksum", 1);
}
virtual std::string app_name() const
{
return "cave print-checksum-algorithms";
}
virtual std::string app_synopsis() const
{
return "prints supported cryptographic checksum algorithms";
}
virtual std::string app_description() const
{
return "Prints a list of supported checksum algorithms. No formatting "
"is used, making the output suitable for parsing by scripts.";
}
};
}
int
PrintChecksumAlgorithmsCommand::run(const std::shared_ptr<Environment> &,
const std::shared_ptr<const Sequence<std::string> > & args)
{
PrintChecksumAlgorithmsCommandLine cmdline;
cmdline.run(args, "CAVE", "CAVE_PRINT_CHECKSUM_ALGORITHMS_OPTIONS", "CAVE_PRINT_CHECKSUM_ALGORITHMS_CMDLINE");
if (cmdline.a_help.specified())
{
std::cout << cmdline;
return EXIT_SUCCESS;
}
if (std::distance(cmdline.begin_parameters(), cmdline.end_parameters()) != 0)
throw args::DoHelp("print-checksum-algorithms takes no parameters");
auto reg(DigestRegistry::get_instance());
for (auto it(reg->begin_algorithms()), it_end(reg->end_algorithms()); it_end != it; ++it)
std::cout << it->first << std::endl;
return EXIT_SUCCESS;
}
std::shared_ptr<args::ArgsHandler>
PrintChecksumAlgorithmsCommand::make_doc_cmdline()
{
return std::make_shared<PrintChecksumAlgorithmsCommandLine>();
}
CommandImportance
PrintChecksumAlgorithmsCommand::importance() const
{
return ci_scripting;
}
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