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update src/hello.c with parsing examples 

Adds the foo/bar commands to provide more working examples of command
argument parsing, including the new handle_command_parse_bool helper.

Updates hello command help text to provide useful information.
This commit is contained in:
Zachary T Welch 2009-11-18 15:20:58 -08:00
parent 4d8d1d32d0
commit 20218b8de6
1 changed files with 54 additions and 1 deletions
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55
src/hello.c
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@ -22,6 +22,57 @@
#endif
#include "log.h"
COMMAND_HANDLER(handle_foo_command)
{
if (CMD_ARGC < 1 || CMD_ARGC > 2)
{
LOG_ERROR("%s: incorrect number of arguments", CMD_NAME);
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");
}
int foo_register_commands(struct command_context *cmd_ctx)
{
// register several commands under the foo command
struct command *cmd = register_command(cmd_ctx, NULL, "foo",
NULL, COMMAND_ANY, "foo: command handler skeleton");
register_command(cmd_ctx, cmd, "bar",
&handle_foo_command, COMMAND_ANY,
"<address> [enable|disable] - an example command");
register_command(cmd_ctx, cmd, "baz",
&handle_foo_command, COMMAND_ANY,
"<address> [enable|disable] - a sample command");
register_command(cmd_ctx, cmd, "flag",
&handle_flag_command, COMMAND_ANY,
"[on|off] - set a flag");
return ERROR_OK;
}
static COMMAND_HELPER(handle_hello_args, const char **sep, const char **name)
{
if (CMD_ARGC > 1)
@ -50,8 +101,10 @@ COMMAND_HANDLER(handle_hello_command)
int hello_register_commands(struct command_context *cmd_ctx)
{
foo_register_commands(cmd_ctx);
struct command *cmd = register_command(cmd_ctx, NULL, "hello",
&handle_hello_command, COMMAND_ANY,
"option");
"[<name>] - prints a warm welcome");
return cmd ? ERROR_OK : -ENOMEM;
}