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hello.c

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  • hello.c 3.19 KiB
    /***************************************************************************
     *   Copyright (C) 2009 Zachary T Welch <zw@superlucidity.net>             *
     *                                                                         *
     *   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, see <http://www.gnu.org/licenses/>. *
     ***************************************************************************/
    
    #ifdef HAVE_CONFIG_H
    #include <config.h>
    #endif
    #include <helper/log.h>
    
    COMMAND_HANDLER(handle_foo_command)
    {
    	if (CMD_ARGC < 1 || CMD_ARGC > 2)
    		return ERROR_COMMAND_SYNTAX_ERROR;
    
    	uint32_t address;
    	COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], address);
    
    	const char *msg = "<unchanged>";
    	if (CMD_ARGC == 2) {
    		bool enable;
    		COMMAND_PARSE_ENABLE(CMD_ARGV[1], enable);
    		msg = enable ? "enable" : "disable";
    	}
    
    	LOG_INFO("%s: address=0x%8.8" PRIx32 " enabled=%s", CMD_NAME, address, msg);
    	return ERROR_OK;
    }
    
    static bool foo_flag;
    
    COMMAND_HANDLER(handle_flag_command)
    {
    	return CALL_COMMAND_HANDLER(handle_command_parse_bool,
    		&foo_flag, "foo flag");
    }
    
    static const struct command_registration foo_command_handlers[] = {
    	{
    		.name = "bar",
    		.handler = &handle_foo_command,
    		.mode = COMMAND_ANY,
    		.usage = "address ['enable'|'disable']",
    		.help = "an example command",
    	},
    	{
    		.name = "baz",
    		.handler = &handle_foo_command,
    		.mode = COMMAND_ANY,
    		.usage = "address ['enable'|'disable']",
    		.help = "a sample command",
    	},
    	{
    		.name = "flag",
    		.handler = &handle_flag_command,
    		.mode = COMMAND_ANY,
    		.usage = "[on|off]",
    		.help = "set a flag",
    	},
    	COMMAND_REGISTRATION_DONE
    };
    
    static COMMAND_HELPER(handle_hello_args, const char **sep, const char **name)
    {
    	if (CMD_ARGC > 1)
    		return ERROR_COMMAND_SYNTAX_ERROR;
    	if (1 == CMD_ARGC) {
    		*sep = " ";
    		*name = CMD_ARGV[0];
    	} else
    		*sep = *name = "";
    
    	return ERROR_OK;
    }
    COMMAND_HANDLER(handle_hello_command)
    {
    	const char *sep, *name;
    	int retval = CALL_COMMAND_HANDLER(handle_hello_args, &sep, &name);
    	if (ERROR_OK == retval)
    		command_print(CMD_CTX, "Greetings%s%s!", sep, name);
    	return retval;
    }
    
    const struct command_registration hello_command_handlers[] = {
    	{
    		.name = "hello",
    		.handler = handle_hello_command,
    		.mode = COMMAND_ANY,
    		.help = "prints a warm welcome",
    		.usage = "[name]",
    	},
    	{
    		.name = "foo",
    		.mode = COMMAND_ANY,
    		.help = "example command handler skeleton",
    
    		.chain = foo_command_handlers,
    	},
    	COMMAND_REGISTRATION_DONE
    };