X-Git-Url: https://review.openocd.org/gitweb?a=blobdiff_plain;f=src%2Fhelper%2Fstartup.tcl;h=d1c73ef3f2a188f1e05d91dd7393bda8f4cf94cb;hb=eaf10f69de969652d03742809b9c970158b90719;hp=f11d5b6838aa27b3b95f4a087671d905915737ac;hpb=c297a14f7072d98bdad6bd7b9bac3a3069de9ed9;p=openocd.git

diff --git a/src/helper/startup.tcl b/src/helper/startup.tcl
index f11d5b6838..d1c73ef3f2 100644
--- a/src/helper/startup.tcl
+++ b/src/helper/startup.tcl
@@ -10,6 +10,30 @@ proc exit {} {
 	ocd_throw exit
 }
 
+# All commands are registered with an 'ocd_' prefix, while the "real"
+# command is a wrapper that calls this function.  Its primary purpose is
+# to discard 'handler' command output,
+proc ocd_bouncer {name args} {
+	set cmd [format "ocd_%s" $name]
+	set type [eval ocd_command type $cmd $args]
+	if {$type == "native"} {
+		return [eval $cmd $args]
+	} else {if {$type == "simple"} {
+		if {[catch {eval $cmd $args}] == 0} {
+			return ""
+		} else {
+			set errmsg "Command handler execution failed"
+		}
+	} else {if {$type == "group"} {
+		catch {eval ocd_usage $name $args}
+		set errmsg [format "%s: command requires more arguments" \
+			[concat $name " " $args]]
+	} else {
+		set errmsg [format "Unknown command type: %s" $type]
+	}}}
+	return -code error $errmsg
+}
+
 # Try flipping / and \ to find file if the filename does not
 # match the precise spelling
 proc find {filename} {