static COMMAND_HELPER(command_help_show, struct command *c, unsigned n,
bool show_help, const char *match)
{
if (!command_can_run(CMD_CTX, c))
return ERROR_OK;
char *cmd_name = command_name(c, ' ');
if (NULL == cmd_name)
return -ENOMEM;
/* If the match string occurs anywhere, we print out
* stuff for this command. */
bool is_match = (strstr(cmd_name, match) != NULL) ||
((c->usage != NULL) && (strstr(c->usage, match) != NULL)) ||
((c->help != NULL) && (strstr(c->help, match) != NULL));
if (is_match)
{
command_help_show_indent(n);
LOG_USER_N("%s", cmd_name);
}
free(cmd_name);
if (is_match)
{
if (c->usage) {
LOG_USER_N(" ");
command_help_show_wrap(c->usage, 0, n + 5);
}
else
LOG_USER_N("\n");
}
if (is_match && show_help)
{
char *msg;
/* Normal commands are runtime-only; highlight exceptions */
if (c->mode != COMMAND_EXEC) {
const char *stage_msg = "";
switch (c->mode) {
case COMMAND_CONFIG:
stage_msg = " (configuration command)";
break;
case COMMAND_ANY:
stage_msg = " (command valid any time)";
break;
default:
stage_msg = " (?mode error?)";
break;
}
msg = alloc_printf("%s%s", c->help ? : "", stage_msg);
} else
static int run_command(struct command_context *context,
struct command *c, const char *words[], unsigned num_words)
{
if (!command_can_run(context, c)) {
/* Many commands may be run only before/after 'init' */
const char *when;
switch (c->mode) {
case COMMAND_CONFIG:
when = "before";
break;
case COMMAND_EXEC:
when = "after";
break;
/* handle the impossible with humor; it guarantees a bug report! */
default:
when = "if Cthulhu is summoned by";
break;
}
LOG_ERROR("The '%s' command must be used %s 'init'.",
c->name, when);
return ERROR_FAIL;
}
struct command_invocation cmd = {
.ctx = context,
.current = c,
.name = c->name,
.argc = num_words - 1,
.argv = words + 1,
};
int retval = c->handler(&cmd);
if (retval == ERROR_COMMAND_SYNTAX_ERROR) {
/* Print help for command */
char *full_name = command_name(c, ' ');
if (NULL != full_name) {
command_run_linef(context, "usage %s", full_name);
free(full_name);
} else
retval = -ENOMEM;
} else if (retval == ERROR_COMMAND_CLOSE_CONNECTION) {
/* just fall through for a shutdown request */
} else if (retval != ERROR_OK) {
/* we do not print out an error message because the command *should*
* have printed out an error
*/
LOG_DEBUG("Command failed with error code %d", retval);
}
return retval;
}
int command_run_line(struct command_context *context, char *line)
{
/* all the parent commands have been registered with the interpreter
* so, can just evaluate the line as a script and check for
* results
*/
/* run the line thru a script engine */
int retval = ERROR_FAIL;
int retcode;
/* Beware! This code needs to be reentrant. It is also possible
* for OpenOCD commands to be invoked directly from Tcl. This would
* happen when the Jim Tcl interpreter is provided by eCos for
* instance.
*/
Jim_Interp *interp = context->interp;
Jim_DeleteAssocData(interp, "context");
retcode = Jim_SetAssocData(interp, "context", NULL, context);
if (retcode == JIM_OK) {
/* associated the return value */
Jim_DeleteAssocData(interp, "retval");
retcode = Jim_SetAssocData(interp, "retval", NULL, &retval);
if (retcode == JIM_OK) {
retcode = Jim_Eval_Named(interp, line, 0, 0);
Jim_DeleteAssocData(interp, "retval");
}
Jim_DeleteAssocData(interp, "context");
}
if (retcode == JIM_OK) {
const char *result;
int reslen;
result = Jim_GetString(Jim_GetResult(interp), &reslen);
if (reslen > 0) {
int i;
char buff[256 + 1];
for (i = 0; i < reslen; i += 256) {
int chunk;
chunk = reslen - i;
if (chunk > 256)
chunk = 256;
strncpy(buff, result + i, chunk);
buff[chunk] = 0;
LOG_USER_N("%s", buff);
}
LOG_USER_N("\n");
}
retval = ERROR_OK;
} else if (retcode == JIM_EXIT) {
/* ignore.
* exit(Jim_GetExitCode(interp)); */
} else if (retcode == ERROR_COMMAND_CLOSE_CONNECTION) {
return retcode;
} else {
Jim_MakeErrorMessage(interp);
LOG_USER("%s", Jim_GetString(Jim_GetResult(interp), NULL));
if (retval == ERROR_OK) {
/* It wasn't a low level OpenOCD command that failed */
return ERROR_FAIL;
}
return retval;
}
return retval;
}
