src/helper: usage/help updates

[openocd.git] / src / helper / startup.tcl

diff --git a/src/helper/startup.tcl b/src/helper/startup.tcl
index 5969cfec7a3075d0ec31daca07ace90d08927cb3..d1c73ef3f2a188f1e05d91dd7393bda8f4cf94cb 100644 (file)
--- a/src/helper/startup.tcl
+++ b/src/helper/startup.tcl
@@ -10,38 +10,28 @@ proc exit {} {
        ocd_throw exit
 }
 
-# Help text list. A list of command + help text pairs.
-proc cmd_help {cmdname h indent} {
-       set indent [expr $indent * 2]
-
-       set fmt_str [format "%%%ds%%-%ds %%s" $indent [expr 25 - $indent]]
-       set w [expr 50 - $indent]
-       set n 0
-
-       while 1 {
-               if {$n > [string length $h]} {break}
-
-               set next_a [expr $n + $w]
-               if {[string length $h] > $n + $w} \
-               {
-                       set xxxx [string range $h $n [expr $n + $w]]
-                       for {set lastpos [expr [string length $xxxx] - 1]} \
-                               {$lastpos >= 0 && [string compare \
-                                       [string range $xxxx $lastpos $lastpos] " "] != 0} \
-                               {set lastpos [expr $lastpos - 1]} \
-                       {
-                       }
-                       #set next_a -1
-                       if {$lastpos != -1} {
-                               set next_a [expr $lastpos + $n + 1]
-                       }
+# 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"
                }
-
-               puts [format $fmt_str "" $cmdname \
-                               [string range $h $n [expr $next_a - 1]] ]
-               set cmdname ""
-               set n [expr $next_a]
-       }
+       } else {if {$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