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// 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 1.2 2003/07/01 01:49:09 rathnor Exp $
#include "CommandParser.hh"
#include "StringUtil.hh"
#include <vector>
#include <iostream>
#include <iterator>
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
#ifdef DEBUG
cerr<<__FILE__<<"("<<__FUNCTION__<<"): command = ["<<
command<<"] arguments=["<<arguments<<"]"<<endl;
#endif // DEBUG
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);
}
ostream &operator << (ostream &the_stream, const CommandParser::CommandFactoryMap::value_type &value) {
the_stream<<value.first;
return the_stream;
}
void CommandParser::showCommands(std::ostream &the_stream) const {
// copy command strings to stream
copy(m_commandfactorys.begin(),
m_commandfactorys.end(),
ostream_iterator<CommandFactoryMap::value_type>(the_stream, "\n"));
}
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) {
std::vector<std::string> commands; // commands that are associated with the factory
// 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();
}
}
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