new command parser

1 files changed, 77 insertions, 0 deletions

diff --git a/src/CommandParser.hh b/src/CommandParser.hh
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+++ b/src/CommandParser.hh
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+// CommandParser.hh 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.hh,v 1.1 2003/06/30 14:44:43 fluxgen Exp $
+
+#ifndef COMMANDPARSER_HH
+#define COMMANDPARSER_HH
+
+#include <string>
+#include <map>
+#include <ostream>
+
+#include "RefCount.hh"
+
+namespace FbTk {
+class Command;
+};
+
+/// Creates commands from command and argument.
+/// Used for modules to add new commands in compile/run time
+class CommandFactory {
+public:
+    CommandFactory();
+    virtual ~CommandFactory();
+    virtual FbTk::Command *stringToCommand(const std::string &command, 
+                                           const std::string &arguments) = 0;
+protected:
+    void addCommand(const std::string &value);
+};
+
+/// Parses text into a command
+class CommandParser {
+public:
+    typedef std::map<std::string, CommandFactory *> CommandFactoryMap;
+
+    /// @return parses and returns a command matching the line
+    FbTk::Command *parseLine(const std::string &line);
+    /// lists all commands to an ostream
+    void showCommands(std::ostream &the_stream) const;
+    /// @return instance of command parser
+    static CommandParser &instance();
+private:
+    // so CommandFactory can associate it's commands
+    friend class CommandFactory;
+    /// associate a command with a factory
+    void associateCommand(const std::string &name, CommandFactory &factory);
+    /// remove all associations with the factory
+    void removeAssociation(CommandFactory &factory);
+
+    /// search for a command in our command factory map
+    FbTk::Command *toCommand(const std::string &command,
+                             const std::string &arguments);
+    
+    CommandFactoryMap m_commandfactorys; ///< a string to factory map
+    
+};
+
+#endif // COMMANDPARSER_HH