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/* bzflag
* Copyright (c) 1993-2025 Tim Riker
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the license found in the file
* named COPYING that should have accompanied this file.
*
* THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef __COMMANDMANAGER_H__
#define __COMMANDMANAGER_H__
#include "common.h"
/* system interface headers */
#include <string>
#include <map>
#include <vector>
/* common interface headers */
#include "common.h"
#include "Singleton.h"
#define CMDMGR (CommandManager::instance())
class CommandManager : public Singleton<CommandManager>
{
public:
CommandManager() = default;
~CommandManager() = default;
// type of function that implements command. function should return
// a string with the output of the command (or the empty string if
// there's no output).
typedef std::vector<std::string> ArgList;
typedef std::string (*CommandFunction)(const std::string& name, const ArgList&, bool* error);
typedef void (*Callback)(const std::string& name, void* userData);
// add/replace a command handler
void add(const std::string& name,
CommandFunction, const std::string& help);
// remove a command handler
void remove(const std::string& name);
// get the help string for a command
std::string getHelp(const std::string& name) const;
// execute a command
std::string run(const std::string& name, const ArgList& args, bool *ret = NULL) const;
// parse and execute a command
std::string run(const std::string& cmd, bool *ret = NULL) const;
// invoke the callback for each registered command
void iterate(Callback, void* userData) const;
private:
static const char* readValue(const char* string, std::string* value);
static const char* readUnquoted(const char* string, std::string* value);
static const char* readQuoted(const char* string, std::string* value);
static const char* skipWhitespace(const char* string);
struct CmdInfo
{
public:
CommandFunction func;
std::string help;
};
typedef std::map<std::string, CmdInfo> Commands;
Commands commands;
};
#endif /* __COMMANDMANAGER_H__ */
// Local Variables: ***
// mode: C++ ***
// tab-width: 4 ***
// c-basic-offset: 4 ***
// indent-tabs-mode: nil ***
// End: ***
// ex: shiftwidth=4 tabstop=4
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