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add src/hello.c to augment new command tutorial 

The hello module provides the 'hello' command, printing a greetings
to the command console.  It can grow to serve as pedagogical example
of services that OpenOCD developers should use: a runnable style guide.
This commit is contained in:
Zachary T Welch 2009-11-11 01:20:49 -08:00
parent f973320cbb
commit 89870c86e7
3 changed files with 64 additions and 1 deletions
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4
src/Makefile.am
View File

@ -12,7 +12,9 @@ endif
openocd_SOURCES = $(MAINFILE)
openocd_LDADD = libopenocd.la
libopenocd_la_SOURCES = openocd.c
libopenocd_la_SOURCES = \
hello.c \
openocd.c
# set the include path found by configure
AM_CPPFLAGS = \

57
src/hello.c Normal file
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@ -0,0 +1,57 @@
/***************************************************************************
* 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, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "log.h"
static COMMAND_HELPER(handle_hello_args, const char **sep, const char **name)
{
if (argc > 1)
{
LOG_ERROR("%s: too many arguments", CMD_NAME);
return ERROR_COMMAND_SYNTAX_ERROR;
}
if (1 == argc)
{
*sep = " ";
*name = args[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;
}
int hello_register_commands(struct command_context_s *cmd_ctx)
{
struct command_s *cmd = register_command(cmd_ctx, NULL, "hello",
&handle_hello_command, COMMAND_ANY,
"option");
return cmd ? ERROR_OK : -ENOMEM;
}

4
src/openocd.c
View File

@ -177,6 +177,9 @@ COMMAND_HANDLER(handle_init_command)
command_context_t *global_cmd_ctx;
/// src/hello.c gives a simple example for writing new command modules
int hello_register_commands(struct command_context_s *cmd_ctx);
/* NB! this fn can be invoked outside this file for non PC hosted builds */
command_context_t *setup_command_handler(void)
{
@ -188,6 +191,7 @@ command_context_t *setup_command_handler(void)
COMMAND_EXEC, "show OpenOCD version");
/* register subsystem commands */
hello_register_commands(cmd_ctx);
server_register_commands(cmd_ctx);
telnet_register_commands(cmd_ctx);
gdb_register_commands(cmd_ctx);