debuggers: import openocd-0.7.0
Initial check-in of openocd-0.7.0 as it can be downloaded from http://sourceforge.net/projects/openocd/files/openocd/0.7.0/ Any modifications will follow. Change-Id: I6949beaefd589e046395ea0cb80f4e1ab1654d55
This commit is contained in:
419
debuggers/openocd/src/helper/command.h
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419
debuggers/openocd/src/helper/command.h
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/***************************************************************************
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* Copyright (C) 2005 by Dominic Rath *
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* Dominic.Rath@gmx.de *
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* *
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* Copyright (C) 2007,2008 Øyvind Harboe *
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* oyvind.harboe@zylin.com *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#ifndef COMMAND_H
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#define COMMAND_H
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#include <jim-nvp.h>
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/* To achieve C99 printf compatibility in MinGW, gnu_printf should be
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* used for __attribute__((format( ... ))), with GCC v4.4 or later
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*/
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#if (defined(IS_MINGW) && (((__GNUC__ << 16) + __GNUC_MINOR__) >= 0x00040004))
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#define PRINTF_ATTRIBUTE_FORMAT gnu_printf
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#else
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#define PRINTF_ATTRIBUTE_FORMAT printf
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#endif
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enum command_mode {
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COMMAND_EXEC,
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COMMAND_CONFIG,
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COMMAND_ANY,
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};
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struct command_context;
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/** The type signature for command context's output handler. */
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typedef int (*command_output_handler_t)(struct command_context *context,
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const char *line);
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struct command_context {
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Jim_Interp *interp;
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enum command_mode mode;
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struct command *commands;
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int current_target;
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command_output_handler_t output_handler;
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void *output_handler_priv;
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};
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struct command;
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/**
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* When run_command is called, a new instance will be created on the
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* stack, filled with the proper values, and passed by reference to the
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* required COMMAND_HANDLER routine.
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*/
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struct command_invocation {
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struct command_context *ctx;
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struct command *current;
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const char *name;
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unsigned argc;
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const char **argv;
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};
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/**
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* Command handlers may be defined with more parameters than the base
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* set provided by command.c. This macro uses C99 magic to allow
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* defining all such derivative types using this macro.
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*/
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#define __COMMAND_HANDLER(name, extra ...) \
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int name(struct command_invocation *cmd, ## extra)
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/**
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* Use this to macro to call a command helper (or a nested handler).
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* It provides command handler authors protection against reordering or
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* removal of unused parameters.
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*
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* @b Note: This macro uses lexical capture to provide some arguments.
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* As a result, this macro should be used @b only within functions
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* defined by the COMMAND_HANDLER or COMMAND_HELPER macros. Those
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* macros provide the expected lexical context captured by this macro.
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* Furthermore, it should be used only from the top-level of handler or
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* helper function, or care must be taken to avoid redefining the same
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* variables in intervening scope(s) by accident.
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*/
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#define CALL_COMMAND_HANDLER(name, extra ...) \
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name(cmd, ## extra)
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/**
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* Always use this macro to define new command handler functions.
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* It ensures the parameters are ordered, typed, and named properly, so
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* they be can be used by other macros (e.g. COMMAND_PARSE_NUMBER).
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* All command handler functions must be defined as static in scope.
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*/
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#define COMMAND_HANDLER(name) \
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static __COMMAND_HANDLER(name)
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/**
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* Similar to COMMAND_HANDLER, except some parameters are expected.
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* A helper is globally-scoped because it may be shared between several
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* source files (e.g. the s3c24xx device command helper).
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*/
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#define COMMAND_HELPER(name, extra ...) __COMMAND_HANDLER(name, extra)
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/**
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* Use this macro to access the context of the command being handled,
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* rather than accessing the variable directly. It may be moved.
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*/
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#define CMD_CTX (cmd->ctx)
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/**
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* Use this macro to access the number of arguments for the command being
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* handled, rather than accessing the variable directly. It may be moved.
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*/
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#define CMD_ARGC (cmd->argc)
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/**
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* Use this macro to access the arguments for the command being handled,
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* rather than accessing the variable directly. It may be moved.
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*/
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#define CMD_ARGV (cmd->argv)
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/**
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* Use this macro to access the name of the command being handled,
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* rather than accessing the variable directly. It may be moved.
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*/
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#define CMD_NAME (cmd->name)
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/**
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* Use this macro to access the current command being handled,
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* rather than accessing the variable directly. It may be moved.
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*/
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#define CMD_CURRENT (cmd->current)
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/**
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* Use this macro to access the invoked command handler's data pointer,
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* rather than accessing the variable directly. It may be moved.
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*/
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#define CMD_DATA (CMD_CURRENT->jim_handler_data)
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/**
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* The type signature for command handling functions. They are
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* usually registered as part of command_registration, providing
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* a high-level means for executing a command.
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*
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* If the command fails, it *MUST* return a value != ERROR_OK
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* (many commands break this rule, patches welcome!)
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*
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* This is *especially* important for commands such as writing
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* to flash or verifying memory. The reason is that those commands
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* can be used by programs to determine if the operation succeded
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* or not. If the operation failed, then a program can try
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* an alternative approach.
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*
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* Returning ERROR_COMMAND_SYNTAX_ERROR will have the effect of
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* printing out the syntax of the command.
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*/
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typedef __COMMAND_HANDLER((*command_handler_t));
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struct command {
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const char *name;
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const char *help;
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const char *usage;
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struct command *parent;
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struct command *children;
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command_handler_t handler;
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Jim_CmdProc jim_handler;
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void *jim_handler_data;
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enum command_mode mode;
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struct command *next;
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};
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/**
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* @param c The command to be named.
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* @param delim The character to place between command names.
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* @returns A malloc'd string containing the full command name,
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* which may include one or more ancestor components. Multiple names
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* are separated by single spaces. The caller must free() the string
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* when done with it.
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*/
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char *command_name(struct command *c, char delim);
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/*
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* Commands should be registered by filling in one or more of these
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* structures and passing them to register_command().
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*
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* A conventioal format should be used for help strings, to provide both
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* usage and basic information:
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* @code
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* "@<options@> ... - some explanation text"
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* @endcode
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*
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* @param name The name of the command to register, which must not have
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* been registered previously in the intended context.
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* @param handler The callback function that will be called. If NULL,
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* then the command serves as a placeholder for its children or a script.
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* @param mode The command mode(s) in which this command may be run.
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* @param help The help text that will be displayed to the user.
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*/
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struct command_registration {
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const char *name;
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command_handler_t handler;
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Jim_CmdProc jim_handler;
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void *jim_handler_data;
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enum command_mode mode;
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const char *help;
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/** a string listing the options and arguments, required or optional */
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const char *usage;
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/**
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* If non-NULL, the commands in @c chain will be registered in
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* the same context and scope of this registration record.
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* This allows modules to inherit lists commands from other
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* modules.
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*/
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const struct command_registration *chain;
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};
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/** Use this as the last entry in an array of command_registration records. */
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#define COMMAND_REGISTRATION_DONE { .name = NULL, .chain = NULL }
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/**
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* Register a command @c handler that can be called from scripts during
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* the execution @c mode specified.
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*
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* If @c parent is non-NULL, the new command will be registered as a
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* sub-command under it; otherwise, it will be available as a top-level
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* command.
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*
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* @param cmd_ctx The command_context in which to register the command.
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* @param parent Register this command as a child of this, or NULL to
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* register a top-level command.
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* @param rec A command_registration record that contains the desired
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* command parameters.
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* @returns The new command, if successful; otherwise, NULL.
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*/
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struct command *register_command(struct command_context *cmd_ctx,
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struct command *parent, const struct command_registration *rec);
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/**
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* Register one or more commands in the specified context, as children
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* of @c parent (or top-level commends, if NULL). In a registration's
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* record contains a non-NULL @c chain member and name is NULL, the
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* commands on the chain will be registered in the same context.
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* Otherwise, the chained commands are added as children of the command.
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*
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* @param cmd_ctx The command_context in which to register the command.
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* @param parent Register this command as a child of this, or NULL to
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* register a top-level command.
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* @param cmds Pointer to an array of command_registration records that
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* contains the desired command parameters. The last record must have
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* NULL for all fields.
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* @returns ERROR_OK on success; ERROR_FAIL if any registration fails.
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*/
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int register_commands(struct command_context *cmd_ctx, struct command *parent,
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const struct command_registration *cmds);
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/**
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* Unregisters command @c name from the given context, @c cmd_ctx.
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* @param cmd_ctx The context of the registered command.
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* @param parent The parent of the given command, or NULL.
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* @param name The name of the command to unregister.
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* @returns ERROR_OK on success, or an error code.
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*/
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int unregister_command(struct command_context *cmd_ctx,
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struct command *parent, const char *name);
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/**
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* Unregisters all commands from the specfied context.
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* @param cmd_ctx The context that will be cleared of registered commands.
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* @param parent If given, only clear commands from under this one command.
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* @returns ERROR_OK on success, or an error code.
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*/
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int unregister_all_commands(struct command_context *cmd_ctx,
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struct command *parent);
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struct command *command_find_in_context(struct command_context *cmd_ctx,
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const char *name);
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struct command *command_find_in_parent(struct command *parent,
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const char *name);
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/**
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* Update the private command data field for a command and all descendents.
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* This is used when creating a new heirarchy of commands that depends
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* on obtaining a dynamically created context. The value will be available
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* in command handlers by using the CMD_DATA macro.
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* @param c The command (group) whose data pointer(s) will be updated.
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* @param p The new data pointer to use for the command or its descendents.
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*/
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void command_set_handler_data(struct command *c, void *p);
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void command_set_output_handler(struct command_context *context,
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command_output_handler_t output_handler, void *priv);
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int command_context_mode(struct command_context *context, enum command_mode mode);
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/* Return the current command context associated with the Jim interpreter or
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* alternatively the global default command interpreter
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*/
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struct command_context *current_command_context(Jim_Interp *interp);
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/**
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* Creates a new command context using the startup TCL provided and
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* the existing Jim interpreter, if any. If interp == NULL, then command_init
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* creates a command interpreter.
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*/
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struct command_context *command_init(const char *startup_tcl, Jim_Interp *interp);
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/**
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* Creates a copy of an existing command context. This does not create
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* a deep copy of the command list, so modifications in one context will
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* affect all shared contexts. The caller must track reference counting
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* and ensure the commands are freed before destroying the last instance.
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* @param cmd_ctx The command_context that will be copied.
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* @returns A new command_context with the same state as the original.
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*/
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struct command_context *copy_command_context(struct command_context *cmd_ctx);
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/**
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* Frees the resources associated with a command context. The commands
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* are not removed, so unregister_all_commands() must be called first.
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* @param context The command_context that will be destroyed.
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*/
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void command_done(struct command_context *context);
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void command_print(struct command_context *context, const char *format, ...)
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__attribute__ ((format (PRINTF_ATTRIBUTE_FORMAT, 2, 3)));
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void command_print_sameline(struct command_context *context, const char *format, ...)
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__attribute__ ((format (PRINTF_ATTRIBUTE_FORMAT, 2, 3)));
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int command_run_line(struct command_context *context, char *line);
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int command_run_linef(struct command_context *context, const char *format, ...)
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__attribute__ ((format (PRINTF_ATTRIBUTE_FORMAT, 2, 3)));
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void command_output_text(struct command_context *context, const char *data);
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void process_jim_events(struct command_context *cmd_ctx);
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#define ERROR_COMMAND_CLOSE_CONNECTION (-600)
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#define ERROR_COMMAND_SYNTAX_ERROR (-601)
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#define ERROR_COMMAND_NOTFOUND (-602)
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#define ERROR_COMMAND_ARGUMENT_INVALID (-603)
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#define ERROR_COMMAND_ARGUMENT_OVERFLOW (-604)
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#define ERROR_COMMAND_ARGUMENT_UNDERFLOW (-605)
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int parse_ulong(const char *str, unsigned long *ul);
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int parse_ullong(const char *str, unsigned long long *ul);
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int parse_long(const char *str, long *ul);
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int parse_llong(const char *str, long long *ul);
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#define DECLARE_PARSE_WRAPPER(name, type) \
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int parse ## name(const char *str, type * ul)
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DECLARE_PARSE_WRAPPER(_uint, unsigned);
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DECLARE_PARSE_WRAPPER(_u32, uint32_t);
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DECLARE_PARSE_WRAPPER(_u16, uint16_t);
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DECLARE_PARSE_WRAPPER(_u8, uint8_t);
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DECLARE_PARSE_WRAPPER(_int, int);
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DECLARE_PARSE_WRAPPER(_s32, int32_t);
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DECLARE_PARSE_WRAPPER(_s16, int16_t);
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DECLARE_PARSE_WRAPPER(_s8, int8_t);
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/**
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* @brief parses the string @a in into @a out as a @a type, or prints
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* a command error and passes the error code to the caller. If an error
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* does occur, the calling function will return the error code produced
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* by the parsing function (one of ERROR_COMMAND_ARGUMENT_*).
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*
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* This function may cause the calling function to return immediately,
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* so it should be used carefully to avoid leaking resources. In most
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* situations, parsing should be completed in full before proceding
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* to allocate resources, and this strategy will most prevents leaks.
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*/
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#define COMMAND_PARSE_NUMBER(type, in, out) \
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do { \
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int retval_macro_tmp = parse_ ## type(in, &(out)); \
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if (ERROR_OK != retval_macro_tmp) { \
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command_print(CMD_CTX, stringify(out) \
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" option value ('%s') is not valid", in); \
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return retval_macro_tmp; \
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} \
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} while (0)
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/**
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* Parse the string @c as a binary parameter, storing the boolean value
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* in @c out. The strings @c on and @c off are used to match different
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* strings for true and false options (e.g. "on" and "off" or
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* "enable" and "disable").
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*/
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#define COMMAND_PARSE_BOOL(in, out, on, off) \
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do { \
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bool value; \
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int retval_macro_tmp = command_parse_bool_arg(in, &value); \
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if (ERROR_OK != retval_macro_tmp) { \
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command_print(CMD_CTX, stringify(out) \
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" option value ('%s') is not valid", in); \
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command_print(CMD_CTX, " choices are '%s' or '%s'", \
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on, off); \
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return retval_macro_tmp; \
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} \
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out = value; \
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} while (0)
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int command_parse_bool_arg(const char *in, bool *out);
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COMMAND_HELPER(handle_command_parse_bool, bool *out, const char *label);
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/** parses an on/off command argument */
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#define COMMAND_PARSE_ON_OFF(in, out) \
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COMMAND_PARSE_BOOL(in, out, "on", "off")
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/** parses an enable/disable command argument */
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#define COMMAND_PARSE_ENABLE(in, out) \
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COMMAND_PARSE_BOOL(in, out, "enable", "disable")
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void script_debug(Jim_Interp *interp, const char *cmd,
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unsigned argc, Jim_Obj * const *argv);
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#endif /* COMMAND_H */
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