diff options
Diffstat (limited to 'src/helper')
| -rw-r--r-- | src/helper/command.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/src/helper/command.c b/src/helper/command.c index ea768b2d..086b03d3 100644 --- a/src/helper/command.c +++ b/src/helper/command.c @@ -84,14 +84,36 @@ static struct log_capture_state *command_log_capture_start(Jim_Interp *interp) return state; } -static void command_log_capture_finish(struct log_capture_state *state) +/* Classic openocd commands provide progress output which we + * will capture and return as a Tcl return value. + * + * However, if a non-openocd command has been invoked, then it + * makes sense to return the tcl return value from that command. + * + * The tcl return value is empty for openocd commands that provide + * progress output. + * + * Therefore we set the tcl return value only if we actually + * captured output. + */ +static void command_log_capture_finish(struct log_capture_state *state) { if (NULL == state) return; log_remove_callback(tcl_output, state); - Jim_SetResult(state->interp, state->output); + int length; + Jim_GetString(state->output, &length); + + if (length > 0) + { + Jim_SetResult(state->interp, state->output); + } else + { + /* No output captured, use tcl return value (which could + * be empty too). */ + } Jim_DecrRefCount(state->interp, state->output); free(state); |