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/***************************************************************************
* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
* Copyright (C) 2007,2008 Øyvind Harboe *
* oyvind.harboe@zylin.com *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifndef COMMAND_H
#define COMMAND_H
#include "types.h"
/* Integrate the JIM TCL interpretor into the command processing. */
#if BUILD_ECOSBOARD
#include <stdio.h>
#include <stdarg.h>
/* Jim is provied by eCos */
#include <cyg/jimtcl/jim.h>
#else
#include "jim.h"
#endif
/* To achieve C99 printf compatibility in MinGW, gnu_printf should be
* used for __attribute__((format( ... ))), with GCC v4.4 or later
*/
#if (defined(IS_MINGW) && (((__GNUC__ << 16) + __GNUC_MINOR__) >= 0x00040004))
#define PRINTF_ATTRIBUTE_FORMAT gnu_printf
#else
#define PRINTF_ATTRIBUTE_FORMAT printf
#endif
enum command_mode
{
COMMAND_EXEC,
COMMAND_CONFIG,
COMMAND_ANY,
};
struct command_context;
/// The type signature for command context's output handler.
typedef int (*command_output_handler_t)(struct command_context *context,
const char* line);
struct command_context
{
enum command_mode mode;
struct command *commands;
int current_target;
/* Execute a command.
*
* If the command fails, it *MUST* return a value != ERROR_OK
* (many commands break this rule, patches welcome!)
*
* This is *especially* important for commands such as writing
* to flash or verifying memory. The reason is that those commands
* can be used by programs to determine if the operation succeded
* or not. If the operation failed, then a program can try
* an alternative approach.
*
* Returning ERROR_COMMAND_SYNTAX_ERROR will have the effect of
* printing out the syntax of the command.
*/
command_output_handler_t output_handler;
void *output_handler_priv;
};
/**
* Command handlers may be defined with more parameters than the base
* set provided by command.c. This macro uses C99 magic to allow
* defining all such derivative types using this macro.
*/
#define __COMMAND_HANDLER(name, extra...) \
int name(struct command_context *cmd_ctx, \
const char *args[], unsigned argc, ##extra)
/**
* Use this to macro to call a command helper (or a nested handler).
* It provides command handler authors protection against reordering or
* removal of unused parameters.
*
* @b Note: This macro uses lexical capture to provide some arguments.
* As a result, this macro should be used @b only within functions
* defined by the COMMAND_HANDLER or COMMAND_HELPER macros. Those
* macros provide the expected lexical context captured by this macro.
* Furthermore, it should be used only from the top-level of handler or
* helper function, or care must be taken to avoid redefining the same
* variables in intervening scope(s) by accident.
*/
#define CALL_COMMAND_HANDLER(name, extra...) \
name(cmd_ctx, args, argc, ##extra)
/**
* Always use this macro to define new command handler functions.
* It ensures the parameters are ordered, typed, and named properly, so
* they be can be used by other macros (e.g. COMMAND_PARSE_NUMBER).
* All command handler functions must be defined as static in scope.
*/
#define COMMAND_HANDLER(name) static __COMMAND_HANDLER(name)
/**
* Similar to COMMAND_HANDLER, except some parameters are expected.
* A helper is globally-scoped because it may be shared between several
* source files (e.g. the s3c24xx device command helper).
*/
#define COMMAND_HELPER(name, extra...) __COMMAND_HANDLER(name, extra)
/**
* Use this macro to access the context of the command being handled,
* rather than accessing the variable directly. It may be moved.
*/
#define CMD_CTX cmd_ctx
/**
* Use this macro to access the number of arguments for the command being
* handled, rather than accessing the variable directly. It may be moved.
*/
#define CMD_ARGC argc
/**
* Use this macro to access the arguments for the command being handled,
* rather than accessing the variable directly. It may be moved.
*/
#define CMD_ARGV args
/**
* Use this macro to access the name of the command being handled,
* rather than accessing the variable directly. It may be moved.
*/
#define CMD_NAME CMD_ARGV[-1]
/// The type signature for commands' handler functions.
typedef __COMMAND_HANDLER((*command_handler_t));
struct command
{
char *name;
struct command *parent;
struct command *children;
command_handler_t handler;
enum command_mode mode;
struct command *next;
};
/**
* @param c The command to be named.
* @param delim The character to place between command names.
* @returns A malloc'd string containing the full command name,
* which may include one or more ancestor components. Multiple names
* are separated by single spaces. The caller must free() the string
* when done with it.
*/
char *command_name(struct command *c, char delim);
struct command* register_command(struct command_context *context,
struct command *parent, char *name, command_handler_t handler,
enum command_mode mode, char *help);
int unregister_command(struct command_context *context, char *name);
int unregister_all_commands(struct command_context *context);
void command_set_output_handler(struct command_context* context,
command_output_handler_t output_handler, void *priv);
struct command_context* copy_command_context(struct command_context* context);
int command_context_mode(struct command_context *context, enum command_mode mode);
struct command_context* command_init(void);
int command_done(struct command_context *context);
void command_print(struct command_context *context, const char *format, ...)
__attribute__ ((format (PRINTF_ATTRIBUTE_FORMAT, 2, 3)));
void command_print_sameline(struct command_context *context, const char *format, ...)
__attribute__ ((format (PRINTF_ATTRIBUTE_FORMAT, 2, 3)));
int command_run_line(struct command_context *context, char *line);
int command_run_linef(struct command_context *context, const char *format, ...)
__attribute__ ((format (PRINTF_ATTRIBUTE_FORMAT, 2, 3)));
void command_output_text(struct command_context *context, const char *data);
void process_jim_events(void);
#define ERROR_COMMAND_CLOSE_CONNECTION (-600)
#define ERROR_COMMAND_SYNTAX_ERROR (-601)
#define ERROR_COMMAND_NOTFOUND (-602)
#define ERROR_COMMAND_ARGUMENT_INVALID (-603)
#define ERROR_COMMAND_ARGUMENT_OVERFLOW (-604)
#define ERROR_COMMAND_ARGUMENT_UNDERFLOW (-605)
extern int fast_and_dangerous;
extern Jim_Interp *interp;
void register_jim(struct command_context *context, const char *name,
Jim_CmdProc cmd, const char *help);
long jim_global_long(const char *variable);
int parse_ulong(const char *str, unsigned long *ul);
int parse_ullong(const char *str, unsigned long long *ul);
int parse_long(const char *str, long *ul);
int parse_llong(const char *str, long long *ul);
#define DECLARE_PARSE_WRAPPER(name, type) \
int parse##name(const char *str, type *ul)
DECLARE_PARSE_WRAPPER(_uint, unsigned);
DECLARE_PARSE_WRAPPER(_u32, uint32_t);
DECLARE_PARSE_WRAPPER(_u16, uint16_t);
DECLARE_PARSE_WRAPPER(_u8, uint8_t);
DECLARE_PARSE_WRAPPER(_int, int);
DECLARE_PARSE_WRAPPER(_s32, int32_t);
DECLARE_PARSE_WRAPPER(_s16, int16_t);
DECLARE_PARSE_WRAPPER(_s8, int8_t);
/**
* @brief parses the string @a in into @a out as a @a type, or prints
* a command error and passes the error code to the caller. If an error
* does occur, the calling function will return the error code produced
* by the parsing function (one of ERROR_COMMAND_ARGUMENT_*).
*
* This function may cause the calling function to return immediately,
* so it should be used carefully to avoid leaking resources. In most
* situations, parsing should be completed in full before proceding
* to allocate resources, and this strategy will most prevents leaks.
*/
#define COMMAND_PARSE_NUMBER(type, in, out) \
do { \
int retval = parse_##type(in, &(out)); \
if (ERROR_OK != retval) { \
command_print(cmd_ctx, stringify(out) \
" option value ('%s') is not valid", in); \
return retval; \
} \
} while (0)
void script_debug(Jim_Interp *interp, const char *cmd,
unsigned argc, Jim_Obj *const *argv);
#endif /* COMMAND_H */
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