--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/CSP2/CSP2_env/env-d9b9114564458d9d-741b3de822f2aaca6c6caa4325c4afce/lib/tcl8.6/auto.tcl	Tue Mar 18 16:23:26 2025 -0400
@@ -0,0 +1,648 @@
+# auto.tcl --
+#
+# utility procs formerly in init.tcl dealing with auto execution of commands
+# and can be auto loaded themselves.
+#
+# Copyright (c) 1991-1993 The Regents of the University of California.
+# Copyright (c) 1994-1998 Sun Microsystems, Inc.
+#
+# See the file "license.terms" for information on usage and redistribution of
+# this file, and for a DISCLAIMER OF ALL WARRANTIES.
+#
+
+# auto_reset --
+#
+# Destroy all cached information for auto-loading and auto-execution, so that
+# the information gets recomputed the next time it's needed.  Also delete any
+# commands that are listed in the auto-load index.
+#
+# Arguments:
+# None.
+
+proc auto_reset {} {
+    global auto_execs auto_index auto_path
+    if {[array exists auto_index]} {
+	foreach cmdName [array names auto_index] {
+	    set fqcn [namespace which $cmdName]
+	    if {$fqcn eq ""} {
+		continue
+	    }
+	    rename $fqcn {}
+	}
+    }
+    unset -nocomplain auto_execs auto_index ::tcl::auto_oldpath
+    if {[catch {llength $auto_path}]} {
+	set auto_path [list [info library]]
+    } elseif {[info library] ni $auto_path} {
+	lappend auto_path [info library]
+    }
+}
+
+# tcl_findLibrary --
+#
+#	This is a utility for extensions that searches for a library directory
+#	using a canonical searching algorithm. A side effect is to source the
+#	initialization script and set a global library variable.
+#
+# Arguments:
+# 	basename	Prefix of the directory name, (e.g., "tk")
+#	version		Version number of the package, (e.g., "8.0")
+#	patch		Patchlevel of the package, (e.g., "8.0.3")
+#	initScript	Initialization script to source (e.g., tk.tcl)
+#	enVarName	environment variable to honor (e.g., TK_LIBRARY)
+#	varName		Global variable to set when done (e.g., tk_library)
+
+proc tcl_findLibrary {basename version patch initScript enVarName varName} {
+    upvar #0 $varName the_library
+    global auto_path env tcl_platform
+
+    set dirs {}
+    set errors {}
+
+    # The C application may have hardwired a path, which we honor
+
+    if {[info exists the_library] && $the_library ne ""} {
+	lappend dirs $the_library
+    } else {
+	# Do the canonical search
+
+	# 1. From an environment variable, if it exists.  Placing this first
+	#    gives the end-user ultimate control to work-around any bugs, or
+	#    to customize.
+
+	if {[info exists env($enVarName)]} {
+	    lappend dirs $env($enVarName)
+	}
+
+	# 2. In the package script directory registered within the
+	#    configuration of the package itself.
+
+	catch {
+	    lappend dirs [::${basename}::pkgconfig get scriptdir,runtime]
+	}
+
+	# 3. Relative to auto_path directories.  This checks relative to the
+	# Tcl library as well as allowing loading of libraries added to the
+	# auto_path that is not relative to the core library or binary paths.
+	foreach d $auto_path {
+	    lappend dirs [file join $d $basename$version]
+	    if {$tcl_platform(platform) eq "unix"
+		    && $tcl_platform(os) eq "Darwin"} {
+		# 4. On MacOSX, check the Resources/Scripts subdir too
+		lappend dirs [file join $d $basename$version Resources Scripts]
+	    }
+	}
+
+	# 3. Various locations relative to the executable
+	# ../lib/foo1.0		(From bin directory in install hierarchy)
+	# ../../lib/foo1.0	(From bin/arch directory in install hierarchy)
+	# ../library		(From unix directory in build hierarchy)
+	#
+	# Remaining locations are out of date (when relevant, they ought to be
+	# covered by the $::auto_path seach above) and disabled.
+	#
+	# ../../library		(From unix/arch directory in build hierarchy)
+	# ../../foo1.0.1/library
+	#		(From unix directory in parallel build hierarchy)
+	# ../../../foo1.0.1/library
+	#		(From unix/arch directory in parallel build hierarchy)
+
+	set parentDir [file dirname [file dirname [info nameofexecutable]]]
+	set grandParentDir [file dirname $parentDir]
+	lappend dirs [file join $parentDir lib $basename$version]
+	lappend dirs [file join $grandParentDir lib $basename$version]
+	lappend dirs [file join $parentDir library]
+	if {0} {
+	    lappend dirs [file join $grandParentDir library]
+	    lappend dirs [file join $grandParentDir $basename$patch library]
+	    lappend dirs [file join [file dirname $grandParentDir] \
+			      $basename$patch library]
+	}
+    }
+    # uniquify $dirs in order
+    array set seen {}
+    foreach i $dirs {
+	# Make sure $i is unique under normalization. Avoid repeated [source].
+	if {[interp issafe]} {
+	    # Safe interps have no [file normalize].
+	    set norm $i
+	} else {
+	    set norm [file normalize $i]
+	}
+	if {[info exists seen($norm)]} {
+	    continue
+	}
+	set seen($norm) {}
+
+	set the_library $i
+	set file [file join $i $initScript]
+
+	# source everything when in a safe interpreter because we have a
+	# source command, but no file exists command
+
+        if {[interp issafe] || [file exists $file]} {
+            if {![catch {uplevel #0 [list source $file]} msg opts]} {
+                return
+            }
+	    append errors "$file: $msg\n"
+	    append errors [dict get $opts -errorinfo]\n
+        }
+    }
+    unset -nocomplain the_library
+    set msg "Can't find a usable $initScript in the following directories: \n"
+    append msg "    $dirs\n\n"
+    append msg "$errors\n\n"
+    append msg "This probably means that $basename wasn't installed properly.\n"
+    error $msg
+}
+
+
+# ----------------------------------------------------------------------
+# auto_mkindex
+# ----------------------------------------------------------------------
+# The following procedures are used to generate the tclIndex file from Tcl
+# source files.  They use a special safe interpreter to parse Tcl source
+# files, writing out index entries as "proc" commands are encountered.  This
+# implementation won't work in a safe interpreter, since a safe interpreter
+# can't create the special parser and mess with its commands.
+
+if {[interp issafe]} {
+    return	;# Stop sourcing the file here
+}
+
+# auto_mkindex --
+# Regenerate a tclIndex file from Tcl source files.  Takes as argument the
+# name of the directory in which the tclIndex file is to be placed, followed
+# by any number of glob patterns to use in that directory to locate all of the
+# relevant files.
+#
+# Arguments:
+# dir -		Name of the directory in which to create an index.
+
+# args -	Any number of additional arguments giving the names of files
+#		within dir.  If no additional are given auto_mkindex will look
+#		for *.tcl.
+
+proc auto_mkindex {dir args} {
+    if {[interp issafe]} {
+	error "can't generate index within safe interpreter"
+    }
+
+    set oldDir [pwd]
+    cd $dir
+
+    append index "# Tcl autoload index file, version 2.0\n"
+    append index "# This file is generated by the \"auto_mkindex\" command\n"
+    append index "# and sourced to set up indexing information for one or\n"
+    append index "# more commands.  Typically each line is a command that\n"
+    append index "# sets an element in the auto_index array, where the\n"
+    append index "# element name is the name of a command and the value is\n"
+    append index "# a script that loads the command.\n\n"
+    if {![llength $args]} {
+	set args *.tcl
+    }
+
+    auto_mkindex_parser::init
+    foreach file [lsort [glob -- {*}$args]] {
+	try {
+	    append index [auto_mkindex_parser::mkindex $file]
+	} on error {msg opts} {
+	    cd $oldDir
+	    return -options $opts $msg
+	}
+    }
+    auto_mkindex_parser::cleanup
+
+    set fid [open "tclIndex" w]
+    puts -nonewline $fid $index
+    close $fid
+    cd $oldDir
+}
+
+# Original version of auto_mkindex that just searches the source code for
+# "proc" at the beginning of the line.
+
+proc auto_mkindex_old {dir args} {
+    set oldDir [pwd]
+    cd $dir
+    set dir [pwd]
+    append index "# Tcl autoload index file, version 2.0\n"
+    append index "# This file is generated by the \"auto_mkindex\" command\n"
+    append index "# and sourced to set up indexing information for one or\n"
+    append index "# more commands.  Typically each line is a command that\n"
+    append index "# sets an element in the auto_index array, where the\n"
+    append index "# element name is the name of a command and the value is\n"
+    append index "# a script that loads the command.\n\n"
+    if {![llength $args]} {
+	set args *.tcl
+    }
+    foreach file [lsort [glob -- {*}$args]] {
+	set f ""
+	set error [catch {
+	    set f [open $file]
+	    fconfigure $f -eofchar "\032 {}"
+	    while {[gets $f line] >= 0} {
+		if {[regexp {^proc[ 	]+([^ 	]*)} $line match procName]} {
+		    set procName [lindex [auto_qualify $procName "::"] 0]
+		    append index "set [list auto_index($procName)]"
+		    append index " \[list source \[file join \$dir [list $file]\]\]\n"
+		}
+	    }
+	    close $f
+	} msg opts]
+	if {$error} {
+	    catch {close $f}
+	    cd $oldDir
+	    return -options $opts $msg
+	}
+    }
+    set f ""
+    set error [catch {
+	set f [open tclIndex w]
+	puts -nonewline $f $index
+	close $f
+	cd $oldDir
+    } msg opts]
+    if {$error} {
+	catch {close $f}
+	cd $oldDir
+	error $msg $info $code
+	return -options $opts $msg
+    }
+}
+
+# Create a safe interpreter that can be used to parse Tcl source files
+# generate a tclIndex file for autoloading.  This interp contains commands for
+# things that need index entries.  Each time a command is executed, it writes
+# an entry out to the index file.
+
+namespace eval auto_mkindex_parser {
+    variable parser ""          ;# parser used to build index
+    variable index ""           ;# maintains index as it is built
+    variable scriptFile ""      ;# name of file being processed
+    variable contextStack ""    ;# stack of namespace scopes
+    variable imports ""         ;# keeps track of all imported cmds
+    variable initCommands       ;# list of commands that create aliases
+    if {![info exists initCommands]} {
+	set initCommands [list]
+    }
+
+    proc init {} {
+	variable parser
+	variable initCommands
+
+	if {![interp issafe]} {
+	    set parser [interp create -safe]
+	    $parser hide info
+	    $parser hide rename
+	    $parser hide proc
+	    $parser hide namespace
+	    $parser hide eval
+	    $parser hide puts
+	    foreach ns [$parser invokehidden namespace children ::] {
+		# MUST NOT DELETE "::tcl" OR BAD THINGS HAPPEN!
+		if {$ns eq "::tcl"} continue
+		$parser invokehidden namespace delete $ns
+	    }
+	    foreach cmd [$parser invokehidden info commands ::*] {
+		$parser invokehidden rename $cmd {}
+	    }
+	    $parser invokehidden proc unknown {args} {}
+
+	    # We'll need access to the "namespace" command within the
+	    # interp.  Put it back, but move it out of the way.
+
+	    $parser expose namespace
+	    $parser invokehidden rename namespace _%@namespace
+	    $parser expose eval
+	    $parser invokehidden rename eval _%@eval
+
+	    # Install all the registered psuedo-command implementations
+
+	    foreach cmd $initCommands {
+		eval $cmd
+	    }
+	}
+    }
+    proc cleanup {} {
+	variable parser
+	interp delete $parser
+	unset parser
+    }
+}
+
+# auto_mkindex_parser::mkindex --
+#
+# Used by the "auto_mkindex" command to create a "tclIndex" file for the given
+# Tcl source file.  Executes the commands in the file, and handles things like
+# the "proc" command by adding an entry for the index file.  Returns a string
+# that represents the index file.
+#
+# Arguments:
+#	file	Name of Tcl source file to be indexed.
+
+proc auto_mkindex_parser::mkindex {file} {
+    variable parser
+    variable index
+    variable scriptFile
+    variable contextStack
+    variable imports
+
+    set scriptFile $file
+
+    set fid [open $file]
+    fconfigure $fid -eofchar "\032 {}"
+    set contents [read $fid]
+    close $fid
+
+    # There is one problem with sourcing files into the safe interpreter:
+    # references like "$x" will fail since code is not really being executed
+    # and variables do not really exist.  To avoid this, we replace all $ with
+    # \0 (literally, the null char) later, when getting proc names we will
+    # have to reverse this replacement, in case there were any $ in the proc
+    # name.  This will cause a problem if somebody actually tries to have a \0
+    # in their proc name.  Too bad for them.
+    set contents [string map [list \$ \0] $contents]
+
+    set index ""
+    set contextStack ""
+    set imports ""
+
+    $parser eval $contents
+
+    foreach name $imports {
+	catch {$parser eval [list _%@namespace forget $name]}
+    }
+    return $index
+}
+
+# auto_mkindex_parser::hook command
+#
+# Registers a Tcl command to evaluate when initializing the child interpreter
+# used by the mkindex parser.  The command is evaluated in the parent
+# interpreter, and can use the variable auto_mkindex_parser::parser to get to
+# the child
+
+proc auto_mkindex_parser::hook {cmd} {
+    variable initCommands
+
+    lappend initCommands $cmd
+}
+
+# auto_mkindex_parser::slavehook command
+#
+# Registers a Tcl command to evaluate when initializing the child interpreter
+# used by the mkindex parser.  The command is evaluated in the child
+# interpreter.
+
+proc auto_mkindex_parser::slavehook {cmd} {
+    variable initCommands
+
+    # The $parser variable is defined to be the name of the child interpreter
+    # when this command is used later.
+
+    lappend initCommands "\$parser eval [list $cmd]"
+}
+
+# auto_mkindex_parser::command --
+#
+# Registers a new command with the "auto_mkindex_parser" interpreter that
+# parses Tcl files.  These commands are fake versions of things like the
+# "proc" command.  When you execute them, they simply write out an entry to a
+# "tclIndex" file for auto-loading.
+#
+# This procedure allows extensions to register their own commands with the
+# auto_mkindex facility.  For example, a package like [incr Tcl] might
+# register a "class" command so that class definitions could be added to a
+# "tclIndex" file for auto-loading.
+#
+# Arguments:
+#	name 	Name of command recognized in Tcl files.
+#	arglist	Argument list for command.
+#	body 	Implementation of command to handle indexing.
+
+proc auto_mkindex_parser::command {name arglist body} {
+    hook [list auto_mkindex_parser::commandInit $name $arglist $body]
+}
+
+# auto_mkindex_parser::commandInit --
+#
+# This does the actual work set up by auto_mkindex_parser::command. This is
+# called when the interpreter used by the parser is created.
+#
+# Arguments:
+#	name 	Name of command recognized in Tcl files.
+#	arglist	Argument list for command.
+#	body 	Implementation of command to handle indexing.
+
+proc auto_mkindex_parser::commandInit {name arglist body} {
+    variable parser
+
+    set ns [namespace qualifiers $name]
+    set tail [namespace tail $name]
+    if {$ns eq ""} {
+	set fakeName [namespace current]::_%@fake_$tail
+    } else {
+	set fakeName [namespace current]::[string map {:: _} _%@fake_$name]
+    }
+    proc $fakeName $arglist $body
+
+    # YUK!  Tcl won't let us alias fully qualified command names, so we can't
+    # handle names like "::itcl::class".  Instead, we have to build procs with
+    # the fully qualified names, and have the procs point to the aliases.
+
+    if {[string match *::* $name]} {
+	set exportCmd [list _%@namespace export [namespace tail $name]]
+	$parser eval [list _%@namespace eval $ns $exportCmd]
+
+	# The following proc definition does not work if you want to tolerate
+	# space or something else diabolical in the procedure name, (i.e.,
+	# space in $alias). The following does not work:
+	#   "_%@eval {$alias} \$args"
+	# because $alias gets concat'ed to $args.  The following does not work
+	# because $cmd is somehow undefined
+	#   "set cmd {$alias} \; _%@eval {\$cmd} \$args"
+	# A gold star to someone that can make test autoMkindex-3.3 work
+	# properly
+
+	set alias [namespace tail $fakeName]
+	$parser invokehidden proc $name {args} "_%@eval {$alias} \$args"
+	$parser alias $alias $fakeName
+    } else {
+	$parser alias $name $fakeName
+    }
+    return
+}
+
+# auto_mkindex_parser::fullname --
+#
+# Used by commands like "proc" within the auto_mkindex parser.  Returns the
+# qualified namespace name for the "name" argument.  If the "name" does not
+# start with "::", elements are added from the current namespace stack to
+# produce a qualified name.  Then, the name is examined to see whether or not
+# it should really be qualified.  If the name has more than the leading "::",
+# it is returned as a fully qualified name.  Otherwise, it is returned as a
+# simple name.  That way, the Tcl autoloader will recognize it properly.
+#
+# Arguments:
+# name -		Name that is being added to index.
+
+proc auto_mkindex_parser::fullname {name} {
+    variable contextStack
+
+    if {![string match ::* $name]} {
+	foreach ns $contextStack {
+	    set name "${ns}::$name"
+	    if {[string match ::* $name]} {
+		break
+	    }
+	}
+    }
+
+    if {[namespace qualifiers $name] eq ""} {
+	set name [namespace tail $name]
+    } elseif {![string match ::* $name]} {
+	set name "::$name"
+    }
+
+    # Earlier, mkindex replaced all $'s with \0.  Now, we have to reverse that
+    # replacement.
+    return [string map [list \0 \$] $name]
+}
+
+# auto_mkindex_parser::indexEntry --
+#
+# Used by commands like "proc" within the auto_mkindex parser to add a
+# correctly-quoted entry to the index. This is shared code so it is done
+# *right*, in one place.
+#
+# Arguments:
+# name -		Name that is being added to index.
+
+proc auto_mkindex_parser::indexEntry {name} {
+    variable index
+    variable scriptFile
+
+    # We convert all metacharacters to their backslashed form, and pre-split
+    # the file name that we know about (which will be a proper list, and so
+    # correctly quoted).
+
+    set name [string range [list \}[fullname $name]] 2 end]
+    set filenameParts [file split $scriptFile]
+
+    append index [format \
+	    {set auto_index(%s) [list source [file join $dir %s]]%s} \
+	    $name $filenameParts \n]
+    return
+}
+
+if {[llength $::auto_mkindex_parser::initCommands]} {
+    return
+}
+
+# Register all of the procedures for the auto_mkindex parser that will build
+# the "tclIndex" file.
+
+# AUTO MKINDEX:  proc name arglist body
+# Adds an entry to the auto index list for the given procedure name.
+
+auto_mkindex_parser::command proc {name args} {
+    indexEntry $name
+}
+
+# Conditionally add support for Tcl byte code files.  There are some tricky
+# details here.  First, we need to get the tbcload library initialized in the
+# current interpreter.  We cannot load tbcload into the child until we have
+# done so because it needs access to the tcl_patchLevel variable.  Second,
+# because the package index file may defer loading the library until we invoke
+# a command, we need to explicitly invoke auto_load to force it to be loaded.
+# This should be a noop if the package has already been loaded
+
+auto_mkindex_parser::hook {
+    try {
+	package require tbcload
+    } on error {} {
+	# OK, don't have it so do nothing
+    } on ok {} {
+	if {[namespace which -command tbcload::bcproc] eq ""} {
+	    auto_load tbcload::bcproc
+	}
+	load {} tbcload $auto_mkindex_parser::parser
+
+	# AUTO MKINDEX:  tbcload::bcproc name arglist body
+	# Adds an entry to the auto index list for the given pre-compiled
+	# procedure name.
+
+	auto_mkindex_parser::commandInit tbcload::bcproc {name args} {
+	    indexEntry $name
+	}
+    }
+}
+
+# AUTO MKINDEX:  namespace eval name command ?arg arg...?
+# Adds the namespace name onto the context stack and evaluates the associated
+# body of commands.
+#
+# AUTO MKINDEX:  namespace import ?-force? pattern ?pattern...?
+# Performs the "import" action in the parser interpreter.  This is important
+# for any commands contained in a namespace that affect the index.  For
+# example, a script may say "itcl::class ...", or it may import "itcl::*" and
+# then say "class ...".  This procedure does the import operation, but keeps
+# track of imported patterns so we can remove the imports later.
+
+auto_mkindex_parser::command namespace {op args} {
+    switch -- $op {
+	eval {
+	    variable parser
+	    variable contextStack
+
+	    set name [lindex $args 0]
+	    set args [lrange $args 1 end]
+
+	    set contextStack [linsert $contextStack 0 $name]
+	    $parser eval [list _%@namespace eval $name] $args
+	    set contextStack [lrange $contextStack 1 end]
+	}
+	import {
+	    variable parser
+	    variable imports
+	    foreach pattern $args {
+		if {$pattern ne "-force"} {
+		    lappend imports $pattern
+		}
+	    }
+	    catch {$parser eval "_%@namespace import $args"}
+	}
+	ensemble {
+	    variable parser
+	    variable contextStack
+	    if {[lindex $args 0] eq "create"} {
+		set name ::[join [lreverse $contextStack] ::]
+		catch {
+		    set name [dict get [lrange $args 1 end] -command]
+		    if {![string match ::* $name]} {
+			set name ::[join [lreverse $contextStack] ::]$name
+		    }
+		    regsub -all ::+ $name :: name
+		}
+		# create artifical proc to force an entry in the tclIndex
+		$parser eval [list ::proc $name {} {}]
+	    }
+	}
+    }
+}
+
+# AUTO MKINDEX:  oo::class create name ?definition?
+# Adds an entry to the auto index list for the given class name.
+auto_mkindex_parser::command oo::class {op name {body ""}} {
+    if {$op eq "create"} {
+	indexEntry $name
+    }
+}
+auto_mkindex_parser::command class {op name {body ""}} {
+    if {$op eq "create"} {
+	indexEntry $name
+    }
+}
+
+return