diff options
author | Brooks Davis <brooks@FreeBSD.org> | 2020-03-17 16:56:50 +0000 |
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committer | Brooks Davis <brooks@FreeBSD.org> | 2020-03-17 16:56:50 +0000 |
commit | 08334c51dbb99d9ecd2bb86a2d94ed06da9e167a (patch) | |
tree | c43eb24d59bd5c963583a5190caef80fc8387322 /utils/cmdline/commands_map.hpp |
Notes
Diffstat (limited to 'utils/cmdline/commands_map.hpp')
-rw-r--r-- | utils/cmdline/commands_map.hpp | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/utils/cmdline/commands_map.hpp b/utils/cmdline/commands_map.hpp new file mode 100644 index 0000000000000..5378a6f2c471a --- /dev/null +++ b/utils/cmdline/commands_map.hpp @@ -0,0 +1,96 @@ +// Copyright 2011 The Kyua Authors. +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above copyright +// notice, this list of conditions and the following disclaimer in the +// documentation and/or other materials provided with the distribution. +// * Neither the name of Google Inc. nor the names of its contributors +// may be used to endorse or promote products derived from this software +// without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +/// \file utils/cmdline/commands_map.hpp +/// Maintains a collection of dynamically-instantiated commands. +/// +/// Commands need to be dynamically-instantiated because they are often +/// complex data structures. Instantiating them as static variables causes +/// problems with the order of construction of globals. The commands_map class +/// provided by this module provides a mechanism to maintain these instantiated +/// objects. + +#if !defined(UTILS_CMDLINE_COMMANDS_MAP_HPP) +#define UTILS_CMDLINE_COMMANDS_MAP_HPP + +#include "utils/cmdline/commands_map_fwd.hpp" + +#include <map> +#include <memory> +#include <set> +#include <string> + +#include "utils/noncopyable.hpp" + + +namespace utils { +namespace cmdline { + + +/// Collection of dynamically-instantiated commands. +template< typename BaseCommand > +class commands_map : noncopyable { + /// Map of command names to their implementations. + typedef std::map< std::string, BaseCommand* > impl_map; + + /// Map of category names to the command names they contain. + typedef std::map< std::string, std::set< std::string > > categories_map; + + /// Collection of all available commands. + impl_map _commands; + + /// Collection of defined categories and their commands. + categories_map _categories; + +public: + commands_map(void); + ~commands_map(void); + + /// Scoped, strictly-owned pointer to a command from this map. + typedef typename std::auto_ptr< BaseCommand > command_ptr; + void insert(command_ptr, const std::string& = ""); + void insert(BaseCommand*, const std::string& = ""); + + /// Type for a constant iterator. + typedef typename categories_map::const_iterator const_iterator; + + bool empty(void) const; + + const_iterator begin(void) const; + const_iterator end(void) const; + + BaseCommand* find(const std::string&); + const BaseCommand* find(const std::string&) const; +}; + + +} // namespace cmdline +} // namespace utils + + +#endif // !defined(UTILS_CMDLINE_BASE_COMMAND_HPP) |