You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
36 lines
691 B
Tcl
36 lines
691 B
Tcl
# hooks.tcl - Hook functions.
|
|
# Copyright (C) 1997, 1999 Cygnus Solutions.
|
|
# Written by Tom Tromey <tromey@cygnus.com>.
|
|
|
|
proc add_hook {hook command} {
|
|
upvar \#0 $hook var
|
|
lappend var $command
|
|
}
|
|
|
|
proc remove_hook {hook command} {
|
|
upvar \#0 $hook var
|
|
set var [lremove $var $command]
|
|
}
|
|
|
|
proc define_hook {hook} {
|
|
upvar \#0 $hook var
|
|
|
|
if {! [info exists var]} then {
|
|
set var {}
|
|
}
|
|
}
|
|
|
|
proc run_hooks {hook args} {
|
|
upvar \#0 $hook var
|
|
set mssg_list {}
|
|
foreach thunk $var {
|
|
if {[catch {uplevel \#0 $thunk $args} mssg]} {
|
|
set errStr "hook=$thunk args=\"$args\" $mssg\n"
|
|
lappend mssg_list $errStr
|
|
}
|
|
}
|
|
if {$mssg_list != ""} {
|
|
error $mssg_list
|
|
}
|
|
}
|