X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=blobdiff_plain;f=src%2Fhelper%2Fstartup.tcl;h=cda3a8fa334dda1f031a57ffb46d63c7eb8277e6;hp=fc84943a5d3891056ba55b4e57b09efa4f30eb19;hb=076802606a46dc2fe03946ab686467593e35a3d8;hpb=a19aaf913688424dbd6384028854c178c9eb5bf2

diff --git a/src/helper/startup.tcl b/src/helper/startup.tcl
index fc84943a5d..cda3a8fa33 100644
--- a/src/helper/startup.tcl
+++ b/src/helper/startup.tcl
@@ -3,66 +3,34 @@
 # Embedded into OpenOCD executable
 #
 
-
-# We need to explicitly redirect this to the OpenOCD command
-# as Tcl defines the exit proc
-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.
+# Due to the two nested proc calls, this wrapper has to explicitly run
+# the wrapped command in the stack frame two levels above.
+proc ocd_bouncer {name args} {
+	set cmd [format "ocd_%s" $name]
+	set type [eval ocd_command type $cmd $args]
+	set errcode error
+	set skiplevel [expr [eval info level] > 1 ? 2 : 1]
+	if {$type == "native"} {
+		return [uplevel $skiplevel $cmd $args]
+	} else {if {$type == "simple"} {
+		set errcode [catch {uplevel $skiplevel $cmd $args}]
+		if {$errcode == 0} {
+			return ""
+		} else {
+			# 'classic' commands output error message as part of progress output
+			set errmsg ""
 		}
-
-		puts [format $fmt_str "" $cmdname \
-				[string range $h $n [expr $next_a - 1]] ]
-		set cmdname ""
-		set n [expr $next_a]
-	}
-}
-
-# If a fn is unknown to Tcl, we try to execute it as an OpenOCD command
-#
-# We also support two level commands. "flash banks" is translated to
-# flash_banks
-proc unknown {args} {
-	# do the name mangling from "flash banks" to "flash_banks"
-	if {[llength $args]>=2} {
-		set cmd_name "[lindex $args 0]_[lindex $args 1]"
-		if {[catch {info body $cmd_name}]==0} {
-		    # the command exists, try it...
-			return [eval "$cmd_name [lrange $args 2 end]"]
-		}
-	}
-	# This really is an unknown command.
-	return -code error "Unknown command: $args"
-}
-
-proc new_target_name { } {
-	return [target number [expr [target count] - 1 ]]
+	} else {if {$type == "group"} {
+		catch {eval ocd_usage $name $args}
+		set errmsg [format "%s: command requires more arguments" \
+			[concat $name " " $args]]
+	} else {
+		set errmsg [format "invalid subcommand \"%s\"" $args]
+	}}}
+	return -code $errcode $errmsg
 }
 
 # Try flipping / and \ to find file if the filename does not
@@ -80,21 +48,15 @@ proc find {filename} {
 	# make sure error message matches original input string
 	return -code error "Can't find $filename"
 }
-add_help_text find "<file> - print full path to file according to OpenOCD search rules"
+add_usage_text find "<file>"
+add_help_text find "print full path to file according to OpenOCD search rules"
 
-# Run script
+# Find and run a script
 proc script {filename} {
-	source [find $filename]
+	uplevel #0 [list source [find $filename]]
 }
-
-add_help_text script "<filename> - filename of OpenOCD script (tcl) to run"
+add_help_text script "filename of OpenOCD script (tcl) to run"
+add_usage_text script "<file>"
 
 #########
 
-# catch any exceptions, capture output and return output
-proc capture_catch {a} {
-	catch {
-		capture {uplevel $a}
-	} result
-	return $result
-}