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add 'command mode' introspective handler 

Allows scripts to behave different depending on the current mode.
Also allows introspection of the mode required for commands.
This commit is contained in:
Zachary T Welch 2009-11-28 12:29:42 -08:00
parent 89fa493a3b
commit 3b5751a4d4
1 changed files with 39 additions and 0 deletions
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39
src/helper/command.c
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@ -950,6 +950,36 @@ static int command_unknown(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
return script_command_run(interp, count, start, c, found);
}
static int jim_command_mode(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
struct command_context *cmd_ctx = current_command_context();
enum command_mode mode;
if (argc > 1)
{
struct command *c = cmd_ctx->commands;
int remaining = command_unknown_find(argc - 1, argv + 1, c, &c, true);
// if nothing could be consumed, then it's an unknown command
if (remaining == argc - 1)
{
Jim_SetResultString(interp, "unknown", -1);
return JIM_OK;
}
mode = c->mode;
}
else
mode = cmd_ctx->mode;
const char *mode_str;
switch (mode) {
case COMMAND_ANY: mode_str = "any"; break;
case COMMAND_CONFIG: mode_str = "config"; break;
case COMMAND_EXEC: mode_str = "exec"; break;
default: mode_str = "unknown"; break;
}
Jim_SetResultString(interp, mode_str, -1);
return JIM_OK;
}
static int jim_command_type(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
if (1 == argc)
@ -1097,6 +1127,15 @@ COMMAND_HANDLER(handle_sleep_command)
}
static const struct command_registration command_subcommand_handlers[] = {
{
.name = "mode",
.mode = COMMAND_ANY,
.jim_handler = &jim_command_mode,
.usage = "[<name> ...]",
.help = "Returns the command modes allowed by a command:"
"'any', 'config', or 'exec'. If no command is"
"specified, returns the current command mode.",
},
{
.name = "type",
.mode = COMMAND_ANY,