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-# (c) 2008 Steve Bennett <steveb@workware.net.au>
-#
-# Implements a Tcl-compatible array command based on dict
-#
-# The FreeBSD license
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions
-# are met:
-#
-# 1. Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-# 2. Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following
-# disclaimer in the documentation and/or other materials
-# provided with the distribution.
-#
-# THIS SOFTWARE IS PROVIDED BY THE JIM TCL PROJECT ``AS IS'' AND ANY
-# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
-# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-# JIM TCL PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
-# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
-# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
-# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-#
-# The views and conclusions contained in the software and documentation
-# are those of the authors and should not be interpreted as representing
-# official policies, either expressed or implied, of the Jim Tcl Project.
-
-package provide array 1.0
-
-proc array {subcmd arrayname args} {
- # $name is the name of the array in the caller's context
- upvar $arrayname name
-
- if {$subcmd eq "exists"} {
- return [info exists name]
- }
-
- if {![info exists name]} {
- set name [dict create]
- }
-
- switch $subcmd {
- set {
- # The argument should be a list, but we also
- # support name value pairs
- if {[llength $args] == 1} {
- set args [lindex $args 0]
- }
- foreach {key value} $args {
- dict set name $key $value
- }
- return $name
- }
- size {
- return [/ [llength $name] 2]
- }
- }
-
- # The remaining options take a pattern
- if {[llength $args] > 0} {
- set pattern [lindex $args 0]
- } else {
- set pattern *
- }
-
- switch $subcmd {
- names {
- set keys {}
- foreach {key value} $name {
- if {[string match $pattern $key]} {
- lappend keys $key
- }
- }
- return $keys
- }
- get {
- set list {}
- foreach {key value} $name {
- if {[string match $pattern $key]} {
- lappend list $key $value
- }
- }
- return $list
- }
- unset {
- foreach {key value} $name {
- if {[string match $pattern $key]} {
- dict unset name $key
- }
- }
- return
- }
- }
-
- # Tcl-compatible error message
- error "bad option \"$subcmd\": must be exists, get, names, set, size, or unset"
-}