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// CommandParser.cc for Fluxbox - an X11 Window manager
// Copyright (c) 2003 - 2006 Henrik Kinnunen (fluxgen at fluxbox dot org)
// 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.
// $Id$
#include "CommandParser.hh"
#include "FbTk/StringUtil.hh"
#include <vector>
using std::string;
using std::vector;
using FbTk::StringUtil::removeFirstWhitespace;
using FbTk::StringUtil::toLower;
CommandParser *CommandParser::s_singleton = 0;
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);
}
// ensure it is singleton
CommandParser::CommandParser() {
if (s_singleton != 0)
throw std::string("CommandParser currently meant ot be singleton");
}
CommandParser &CommandParser::instance() {
if (s_singleton == 0)
s_singleton = new CommandParser();
return *s_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);
FbTk::StringUtil::removeTrailingWhitespace(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 = 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
vector<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();
}
if (m_commandfactorys.empty())
delete s_singleton;
}
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