// LogicCommands.cc for FbTk // Copyright (c) 2007 Fluxbox Team (fluxgen at fluxbox dot org) // // 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. #include "LogicCommands.hh" #include "CommandParser.hh" #include "StringUtil.hh" #include <vector> using FbTk::StringUtil::removeFirstWhitespace; using FbTk::StringUtil::toLower; using std::string; namespace FbTk { namespace { template <typename M> M *addCommands(M *macro, const string &args, bool trusted) { std::string blah; std::vector<std::string> cmds; StringUtil::stringTokensBetween(cmds, args, blah, '{', '}'); RefCount<Command<bool> > cmd(0); std::vector<std::string>::iterator it = cmds.begin(), it_end = cmds.end(); for (; it != it_end; ++it) { cmd.reset( CommandParser<bool>::instance().parse(*it, trusted) ); if (cmd) macro->add(cmd); } if (macro->size() > 0) return macro; delete macro; return 0; } Command<bool> *parseLogicCommand(const string &command, const string &args, bool trusted) { if (command == "not") { Command<bool> *boolcmd = CommandParser<bool>::instance().parse(args, trusted); if (!boolcmd) return 0; RefCount<Command<bool> > ref(boolcmd); return new NotCommand(ref); } else if (command == "and") return addCommands<AndCommand>(new AndCommand(), args, trusted); else if (command == "or") return addCommands<OrCommand>(new OrCommand(), args, trusted); else if (command == "xor") return addCommands<XorCommand>(new XorCommand(), args, trusted); return 0; } REGISTER_COMMAND_PARSER(not, parseLogicCommand, bool); REGISTER_COMMAND_PARSER(and, parseLogicCommand, bool); REGISTER_COMMAND_PARSER(or, parseLogicCommand, bool); REGISTER_COMMAND_PARSER(xor, parseLogicCommand, bool); } // end anonymous namespace Command<void> *IfCommand::parse(const std::string &command, const std::string &args, bool trusted) { std::string blah; std::vector<std::string> cmds; RefCount<Command<bool> > cond(0); RefCount<Command<void> > t(0), f(0); StringUtil::stringTokensBetween(cmds, args, blah, '{', '}'); if (cmds.size() < 2) return 0; cond.reset( CommandParser<bool>::instance().parse(cmds[0], trusted) ); if (cond == 0) return 0; t.reset( CommandParser<void>::instance().parse(cmds[1], trusted) ); if (cmds.size() >= 3) f.reset( CommandParser<void>::instance().parse(cmds[2], trusted) ); if (t == 0 && f == 0) return 0; return new IfCommand(cond, t, f); } REGISTER_COMMAND_PARSER(if, IfCommand::parse, void); REGISTER_COMMAND_PARSER(cond, IfCommand::parse, void); void OrCommand::add(RefCount<Command<bool> > &com) { m_commandlist.push_back(com); } size_t OrCommand::size() const { return m_commandlist.size(); } bool OrCommand::execute() { for (size_t i=0; i < m_commandlist.size(); ++i) { if (m_commandlist[i]->execute()) return true; } return false; } void AndCommand::add(RefCount<Command<bool> > &com) { m_commandlist.push_back(com); } size_t AndCommand::size() const { return m_commandlist.size(); } bool AndCommand::execute() { for (size_t i=0; i < m_commandlist.size(); ++i) { if (!m_commandlist[i]->execute()) return false; } return true; } void XorCommand::add(RefCount<Command<bool> > &com) { m_commandlist.push_back(com); } size_t XorCommand::size() const { return m_commandlist.size(); } bool XorCommand::execute() { bool ret = false; for (size_t i=0; i < m_commandlist.size(); ++i) ret ^= m_commandlist[i]->execute(); return ret; } } // end namespace FbTk