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/*
* Copyright (c) 2015-2018 Richard Braun.
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*
* Upstream site with license notes :
* http://git.sceen.net/rbraun/librbraun.git/
*
*
* Minimalist shell for embedded systems.
*/
#ifndef KERN_SHELL_H
#define KERN_SHELL_H
#include <stddef.h>
#include <kern/error.h>
#include <kern/init.h>
#include <kern/macros.h>
#define SHELL_REGISTER_CMDS(cmds) \
MACRO_BEGIN \
size_t i_; \
int error_; \
\
for (i_ = 0; i_ < ARRAY_SIZE(cmds); i_++) { \
error_ = shell_cmd_register(&(cmds)[i_]); \
error_check(error_, __func__); \
} \
MACRO_END
typedef void (*shell_fn_t)(int argc, char *argv[]);
struct shell_cmd {
struct shell_cmd *ht_next;
struct shell_cmd *ls_next;
const char *name;
shell_fn_t fn;
const char *usage;
const char *short_desc;
const char *long_desc;
};
/*
* Static shell command initializers.
*/
#define SHELL_CMD_INITIALIZER(name, fn, usage, short_desc) \
{ NULL, NULL, name, fn, usage, short_desc, NULL }
#define SHELL_CMD_INITIALIZER2(name, fn, usage, short_desc, long_desc) \
{ NULL, NULL, name, fn, usage, short_desc, long_desc }
/*
* Initialize a shell command structure.
*/
void shell_cmd_init(struct shell_cmd *cmd, const char *name,
shell_fn_t fn, const char *usage,
const char *short_desc, const char *long_desc);
/*
* Start the shell thread.
*/
void shell_start(void);
/*
* Register a shell command.
*
* The command name must be unique. It must not include characters outside
* the [a-zA-Z0-9-_] class.
*
* The structure passed when calling this function is directly reused by
* the shell module and must persist in memory.
*/
int shell_cmd_register(struct shell_cmd *cmd);
/*
* This init operation provides :
* - commands can be registered
* - module fully initialized
*/
INIT_OP_DECLARE(shell_setup);
#endif /* KERN_SHELL_H */
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