69de5b5a00
static xyz inside a anonymous namespace is not really needed, so i removed the namespace to get rid of the compiler warning. it's more convinient for the developer to put ';' after that REGISTER_COMMAND_PARSER
132 lines
4.8 KiB
C++
132 lines
4.8 KiB
C++
// CommandParser.hh for FbTk
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// Copyright (c) 2007 Fluxbox Team (fluxgen at fluxbox dot org)
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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#ifndef CommandParser_HH
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#define CommandParser_HH
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#include "StringUtil.hh"
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#include <string>
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#include <map>
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using std::string;
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namespace FbTk {
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// helper for registering a function to parse arguments
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#define REGISTER_COMMAND_PARSER(name, parser, type) \
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static const bool p_register_command_##type_##name = FbTk::CommandParser<type>::instance().registerCommand(#name, &parser)
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// include some basic Command<void> creators
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template <typename ClassName, typename Type>
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Command<Type> *CommandCreator(const string &name, const string &args,
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bool trusted) {
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return new ClassName();
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}
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#define REGISTER_COMMAND(name, classname, type) \
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static const bool p_register_##type_##name = FbTk::CommandParser<type>::instance().registerCommand(#name, &FbTk::CommandCreator<classname, type>)
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template <typename ClassName, typename Type>
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Command<Type> *CommandCreatorWithArgs(const string &name, const string &args,
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bool trusted) {
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return new ClassName(args);
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}
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#define REGISTER_COMMAND_WITH_ARGS(name, classname, type) \
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static const bool p_register_##type_##name = FbTk::CommandParser<type>::instance().registerCommand(#name, &FbTk::CommandCreatorWithArgs<classname, type>)
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template <typename ClassName, typename Type>
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Command<Type> *UntrustedCommandCreator(const string &name, const string &args,
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bool trusted) {
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if (!trusted) return 0;
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return new ClassName();
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}
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#define REGISTER_UNTRUSTED_COMMAND(name, classname, type) \
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static const bool p_register_##type_##name = FbTk::CommandParser<type>::instance().registerCommand(#name, &FbTk::UntrustedCommandCreator<classname, type>)
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template <typename ClassName, typename Type>
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Command<Type> *UntrustedCommandCreatorWithArgs(const string &name,
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const string &args, bool trusted) {
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if (!trusted) return 0;
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return new ClassName(args);
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}
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#define REGISTER_UNTRUSTED_COMMAND_WITH_ARGS(name, classname, type) \
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static const bool p_register_##type_##name = FbTk::CommandParser<type>::instance().registerCommand(#name, &FbTk::UntrustedCommandCreatorWithArgs<classname, type>)
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template <typename Type>
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class CommandParser {
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public:
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typedef Command<Type> *(*Creator)(const string &, const string &, bool);
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typedef std::map<std::string, Creator> CreatorMap;
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static CommandParser<Type> &instance() {
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static CommandParser<Type> s_instance;
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return s_instance;
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}
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Command<Type> *parse(const string &name, const string &args,
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bool trusted = true) const {
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string lc = StringUtil::toLower(name);
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Creator creator = lookup(lc);
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if (creator)
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return creator(lc, args, trusted);
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return 0;
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}
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Command<Type> *parse(const string &line, bool trusted = true) const {
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// separate args and command
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string command, args;
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StringUtil::getFirstWord(line, command, args);
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StringUtil::removeFirstWhitespace(args);
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StringUtil::removeTrailingWhitespace(args);
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// now we parse
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return parse(command, args, trusted);
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}
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bool registerCommand(string name, Creator creator) {
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name = StringUtil::toLower(name);
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m_creators[name] = creator;
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return true;
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}
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Creator lookup(const std::string &name) const {
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typename CreatorMap::const_iterator it = m_creators.find(name);
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if (it == m_creators.end())
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return 0;
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return it->second;
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}
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const CreatorMap &creatorMap() const { return m_creators; }
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private:
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CommandParser() {}
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~CommandParser() {}
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CreatorMap m_creators;
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};
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} // end namespace FbTk
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#endif // COMMANDPARSER_HH
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