CommandParser.cc // CommandParser.cc for Fluxbox - an X11 Window manager // Copyright (c) 2003 Henrik Kinnunen (fluxgen{<a*t>}users.sourceforge.net) // and Simon Bowden (rathnor at users.sourceforge.net) // // Permission is hereby granted, free of charge, to any person obtaining a // copy of this software and associated documentation files (the "Software"), // to deal in the Software without restriction, including without limitation // the rights to use, copy, modify, merge, publish, distribute, sublicense, // and/or sell copies of the Software, and to permit persons to whom the // Software is furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER // DEALINGS IN THE SOFTWARE. // $Id: CommandParser.cc,v 1.4 2003/08/11 13:47:51 fluxgen Exp $ #include "CommandParser.hh" #include "StringUtil.hh" #include <vector> using namespace std; namespace { string::size_type removeFirstWhitespace(std::string &str) { string::size_type first_pos = str.find_first_not_of(" \t"); if (first_pos != string::npos) str.erase(0, first_pos); return first_pos; } }; // end anonymous namespace CommandFactory::CommandFactory() { } CommandFactory::~CommandFactory() { // remove all associations with this factory CommandParser::instance().removeAssociation(*this); } void CommandFactory::addCommand(const std::string &command_name) { CommandParser::instance().associateCommand(command_name, *this); } CommandParser &CommandParser::instance() { static CommandParser singleton; return singleton; } FbTk::Command *CommandParser::parseLine(const std::string &line) { // parse arguments and command string command = line; string arguments; string::size_type first_pos = removeFirstWhitespace(command); string::size_type second_pos = command.find_first_of(" \t", first_pos); if (second_pos != string::npos) { // ok we have arguments, parsing them here arguments = command.substr(second_pos); removeFirstWhitespace(arguments); command.erase(second_pos); // remove argument from command } // now we have parsed command and arguments command = FbTk::StringUtil::toLower(command); // we didn't find any matching command in default commands, // so we search in the command creators modules for a // matching command string return toCommand(command, arguments); } FbTk::Command *CommandParser::toCommand(const std::string &command_str, const std::string &arguments) { if (m_commandfactorys[command_str] != 0) return m_commandfactorys[command_str]->stringToCommand(command_str, arguments); return 0; } void CommandParser::associateCommand(const std::string &command, CommandFactory &factory) { // we shouldnt override other commands if (m_commandfactorys[command] != 0) return; m_commandfactorys[command] = &factory; } void CommandParser::removeAssociation(CommandFactory &factory) { // commands that are associated with the factory std::vector<std::string> commands; // find associations CommandFactoryMap::iterator factory_it = m_commandfactorys.begin(); const CommandFactoryMap::iterator factory_it_end = m_commandfactorys.end(); for (; factory_it != factory_it_end; ++factory_it) { if ((*factory_it).second == &factory) commands.push_back((*factory_it).first); } // remove all associations while (!commands.empty()) { m_commandfactorys.erase(commands.back()); commands.pop_back(); } } Fluxbox CVS-Jan-2003
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