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/* vim: set sw=4 sts=4 et foldmethod=syntax : */
/** \file
*
* Basic command line handling for most examples.
*/
#include "example_command_line.hh"
#include <paludis/paludis.hh>
#include <cstdlib>
#include <iostream>
using namespace paludis;
using namespace examples;
using std::cout;
using std::endl;
CommandLine::CommandLine() :
ArgsHandler(),
action_args(main_options_section(), "Actions",
"Selects which basic action to perform. At most one action should "
"be specified."),
a_version(&action_args, "version", 'V', "Display program version", false),
a_help(&action_args, "help", 'h', "Display program help", false),
general_args(main_options_section(), "General options",
"Options which are relevant for most or all actions."),
a_log_level(&general_args, "log-level", '\0'),
a_environment(&general_args, "environment", 'E', "Environment specification (class:suffix, both parts optional)")
{
}
std::string
CommandLine::app_name() const
{
return "example";
}
std::string
CommandLine::app_synopsis() const
{
return "An example app";
}
std::string
CommandLine::app_description() const
{
return "This is an example program.";
}
CommandLine::~CommandLine()
{
}
void
examples::show_help_and_exit(const char * const argv[])
{
cout << "Usage: " << argv[0] << " [options]" << endl;
cout << endl;
cout << *CommandLine::get_instance();
std::exit(EXIT_SUCCESS);
}
void
examples::show_version_and_exit()
{
cout << PALUDIS_PACKAGE << " " << PALUDIS_VERSION_MAJOR << "."
<< PALUDIS_VERSION_MINOR << "." << PALUDIS_VERSION_MICRO << PALUDIS_VERSION_SUFFIX;
if (! std::string(PALUDIS_GIT_HEAD).empty())
cout << " git " << PALUDIS_GIT_HEAD;
cout << endl;
std::exit(EXIT_SUCCESS);
}
void
CommandLine::run(const int argc, const char * const * const argv, const std::string & client,
const std::string & env_var, const std::string & env_prefix)
{
args::ArgsHandler::run(argc, argv, client, env_var, env_prefix);
if (CommandLine::get_instance()->a_log_level.specified())
Log::get_instance()->set_log_level(CommandLine::get_instance()->a_log_level.option());
if (CommandLine::get_instance()->a_help.specified())
show_help_and_exit(argv);
if (CommandLine::get_instance()->a_version.specified())
show_version_and_exit();
}
namespace paludis
{
template class Singleton<CommandLine>;
}
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