To do so, a few dependencies have been imported: * external/bsd/lutok * external/mit/lua * external/public-domain/sqlite * external/public-domain/xz The Kyua framework is the new generation of ATF (Automated Test Framework), it is composed of: * external/bsd/atf * external/bsd/kyua-atf-compat * external/bsd/kyua-cli * external/bsd/kyua-tester * tests Kyua/ATF being written in C++, it depends on libstdc++ which is provided by GCC. As this is not part of the sources, Kyua is only compiled when the native GCC utils are installed. To install Kyua do the following: * In a cross-build enviromnent, add the following to the build.sh commandline: -V MKBINUTILS=yes -V MKGCCCMDS=yes WARNING: At this point the import is still experimental, and not supported on native builds (a.k.a make build). Change-Id: I26aee23c5bbd2d64adcb7c1beb98fe0d479d7ada
247 lines
8.8 KiB
C++
247 lines
8.8 KiB
C++
// Copyright 2010 Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of Google Inc. nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "cli/cmd_help.hpp"
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#include <algorithm>
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#include <cstdlib>
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#include "cli/common.ipp"
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#include "utils/cmdline/commands_map.ipp"
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#include "utils/cmdline/exceptions.hpp"
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#include "utils/cmdline/globals.hpp"
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#include "utils/cmdline/options.hpp"
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#include "utils/cmdline/parser.hpp"
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#include "utils/cmdline/ui.hpp"
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#include "utils/defs.hpp"
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#include "utils/format/macros.hpp"
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#include "utils/sanity.hpp"
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#include "utils/text/table.hpp"
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namespace cmdline = utils::cmdline;
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namespace config = utils::config;
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namespace text = utils::text;
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using cli::cmd_help;
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namespace {
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/// Creates a table with the help of a set of options.
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///
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/// \param options The set of options to describe. May be empty.
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///
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/// \return A 2-column wide table with the description of the options.
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static text::table
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options_help(const cmdline::options_vector& options)
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{
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text::table table(2);
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for (cmdline::options_vector::const_iterator iter = options.begin();
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iter != options.end(); iter++) {
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const cmdline::base_option* option = *iter;
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std::string description = option->description();
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if (option->needs_arg() && option->has_default_value())
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description += F(" (default: %s)") % option->default_value();
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text::table_row row;
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if (option->has_short_name())
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row.push_back(F("%s, %s") % option->format_short_name() %
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option->format_long_name());
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else
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row.push_back(F("%s") % option->format_long_name());
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row.push_back(F("%s.") % description);
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table.add_row(row);
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}
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return table;
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}
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/// Prints the summary of commands and generic options.
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///
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/// \param ui Object to interact with the I/O of the program.
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/// \param options The set of program-wide options for which to print help.
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/// \param commands The set of commands for which to print help.
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static void
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general_help(cmdline::ui* ui, const cmdline::options_vector* options,
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const cmdline::commands_map< cli::cli_command >* commands)
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{
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PRE(!commands->empty());
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ui->out_tag_wrap(
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"Usage: ",
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F("%s [general_options] command [command_options] [args]") %
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cmdline::progname(), false);
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const text::table options_table = options_help(*options);
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text::widths_vector::value_type first_width =
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options_table.column_width(0);
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std::map< std::string, text::table > command_tables;
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for (cmdline::commands_map< cli::cli_command >::const_iterator
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iter = commands->begin(); iter != commands->end(); iter++) {
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const std::string& category = (*iter).first;
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const std::set< std::string >& command_names = (*iter).second;
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command_tables.insert(std::map< std::string, text::table >::value_type(
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category, text::table(2)));
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text::table& table = command_tables.find(category)->second;
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for (std::set< std::string >::const_iterator i2 = command_names.begin();
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i2 != command_names.end(); i2++) {
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const cli::cli_command* command = commands->find(*i2);
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text::table_row row;
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row.push_back(command->name());
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row.push_back(F("%s.") % command->short_description());
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table.add_row(row);
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}
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if (table.column_width(0) > first_width)
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first_width = table.column_width(0);
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}
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text::table_formatter formatter;
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formatter.set_column_width(0, first_width);
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formatter.set_column_width(1, text::table_formatter::width_refill);
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formatter.set_separator(" ");
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if (!options_table.empty()) {
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ui->out_wrap("");
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ui->out_wrap("Available general options:");
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ui->out_table(options_table, formatter, " ");
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}
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// Iterate using the same loop as above to preserve ordering.
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for (cmdline::commands_map< cli::cli_command >::const_iterator
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iter = commands->begin(); iter != commands->end(); iter++) {
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const std::string& category = (*iter).first;
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ui->out_wrap("");
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ui->out_wrap(F("%s commands:") %
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(category.empty() ? "Generic" : category));
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ui->out_table(command_tables.find(category)->second, formatter, " ");
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}
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ui->out_wrap("");
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ui->out_wrap("See kyua(1) for more details.");
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}
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/// Prints help for a particular subcommand.
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///
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/// \param ui Object to interact with the I/O of the program.
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/// \param general_options The options that apply to all commands.
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/// \param command Pointer to the command to describe.
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static void
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subcommand_help(cmdline::ui* ui,
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const utils::cmdline::options_vector* general_options,
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const cli::cli_command* command)
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{
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ui->out_tag_wrap(
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"Usage: ", F("%s [general_options] %s%s%s") %
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cmdline::progname() % command->name() %
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(command->options().empty() ? "" : " [command_options]") %
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(command->arg_list().empty() ? "" : (" " + command->arg_list())),
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false);
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ui->out_wrap("");
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ui->out_wrap(F("%s.") % command->short_description());
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const text::table general_table = options_help(*general_options);
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const text::table command_table = options_help(command->options());
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const text::widths_vector::value_type first_width =
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std::max(general_table.column_width(0), command_table.column_width(0));
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text::table_formatter formatter;
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formatter.set_column_width(0, first_width);
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formatter.set_column_width(1, text::table_formatter::width_refill);
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formatter.set_separator(" ");
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if (!general_table.empty()) {
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ui->out_wrap("");
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ui->out_wrap("Available general options:");
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ui->out_table(general_table, formatter, " ");
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}
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if (!command_table.empty()) {
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ui->out_wrap("");
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ui->out_wrap("Available command options:");
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ui->out_table(command_table, formatter, " ");
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}
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ui->out_wrap("");
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ui->out_wrap(F("See kyua-%s(1) for more details.") % command->name());
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}
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} // anonymous namespace
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/// Default constructor for cmd_help.
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///
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/// \param options_ The set of program-wide options for which to provide help.
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/// \param commands_ The set of commands for which to provide help.
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cmd_help::cmd_help(const cmdline::options_vector* options_,
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const cmdline::commands_map< cli_command >* commands_) :
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cli_command("help", "[subcommand]", 0, 1, "Shows usage information"),
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_options(options_),
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_commands(commands_)
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{
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}
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/// Entry point for the "help" subcommand.
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///
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/// \param ui Object to interact with the I/O of the program.
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/// \param cmdline Representation of the command line to the subcommand.
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/// \param unused_user_config The runtime configuration of the program.
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///
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/// \return 0 to indicate success.
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int
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cmd_help::run(utils::cmdline::ui* ui, const cmdline::parsed_cmdline& cmdline,
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const config::tree& UTILS_UNUSED_PARAM(user_config))
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{
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if (cmdline.arguments().empty()) {
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general_help(ui, _options, _commands);
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} else {
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INV(cmdline.arguments().size() == 1);
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const std::string& cmdname = cmdline.arguments()[0];
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const cli::cli_command* command = _commands->find(cmdname);
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if (command == NULL)
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throw cmdline::usage_error(F("The command %s does not exist") %
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cmdname);
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else
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subcommand_help(ui, _options, command);
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}
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return EXIT_SUCCESS;
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}
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