# FILE: header.tk# This file is boilerplate TCL/TK function definitions for 'make xconfig'.## CHANGES# =======## 8 January 1999, Michael Elizabeth Chastain, <mec@shout.net># - Remove unused do_cmd function (part of the 2.0 sound support).# - Arrange buttons in three columns for better screen fitting.# - Add CONSTANT_Y, CONSTANT_M, CONSTANT_N for commands like:#     dep_tristate 'foo' CONFIG_FOO m## 23 January 1999, Michael Elizabeth Chastain, <mec@shout.net># - Shut vfix the hell up.## 24 January 1999, Michael Elizabeth Chastain, <mec@shout.net># - Improve the exit message (Jeff Ronne).## This is a handy replacement for ".widget cget" that requires neither tk4# nor additional source code uglification.#proc cget { w option } {	return "[lindex [$w configure $option] 4]"}## Function to compensate for broken config.in scripts like the sound driver,# which make dependencies on variables that are never even conditionally# defined.#proc vfix { var } {	global $var	if [ catch {eval concat $$var} ] {		set $var 4	}}## Constant values used by certain dep_tristate commands.#set CONSTANT_Y 1set CONSTANT_M 2set CONSTANT_N 0set CONSTANT_E 4## Create a "reference" object to steal colors from.#button .ref## On monochrome displays, -disabledforeground is blank by default; that's# bad.  Fill it with -foreground instead.#if { [cget .ref -disabledforeground] == "" } {	.ref configure -disabledforeground [cget .ref -foreground]}## Define some macros we will need to parse the config.in file.#proc mainmenu_name { text } {	wm title . "$text"}proc menu_option { w menu_num text } {	global menus_per_column	global processed_top_level	set processed_top_level [expr $processed_top_level + 1]	if { $processed_top_level <= $menus_per_column } then {	    set myframe left	} elseif { $processed_top_level <= [expr 2 * $menus_per_column] } then {	    set myframe middle	} else {	    set myframe right	} 	button .f0.x$menu_num -anchor w -text "$text" \	    -command "$w .$w \"$text\""	pack .f0.x$menu_num -pady 0 -side top -fill x -in .f0.$myframe}proc load_configfile { w title func } {	catch {destroy $w}	toplevel $w -class Dialog	global loadfile	frame $w.x	label $w.bm -bitmap questhead	pack  $w.bm -pady 10 -side top -padx 10	label $w.x.l -text "Enter filename:" -relief raised	entry $w.x.x -width 35 -relief sunken -borderwidth 2 \		-textvariable loadfile	pack $w.x.l $w.x.x -anchor w -side left	pack $w.x -side top -pady 10	wm title $w "$title" 	set oldFocus [focus]	frame $w.f	button $w.f.back -text "OK" -width 20 \		-command "destroy $w; focus $oldFocus;$func .fileio"	button $w.f.canc -text "Cancel" \		-width 20 -command "destroy $w; focus $oldFocus"	pack $w.f.back $w.f.canc -side left -pady 10 -padx 45	pack $w.f -pady 10 -side bottom -padx 10 -anchor w	focus $w	global winx; global winy	set winx [expr [winfo x .]+30]; set winy [expr [winfo y .]+30]	wm geometry $w +$winx+$winy}proc maybe_exit { w } {	catch {destroy $w}	toplevel $w -class Dialog	label $w.bm -bitmap questhead	pack  $w.bm -pady 10 -side top -padx 10	message $w.m -width 400 -aspect 300 \		-text "Changes will be lost.  Are you sure?" -relief flat	pack  $w.m -pady 10 -side top -padx 10	wm title $w "Are you sure?" 	set oldFocus [focus]	frame $w.f	button $w.f.back -text "OK" -width 20 \		-command "exit"	button $w.f.canc -text "Cancel" \		-width 20 -command "destroy $w; focus $oldFocus"	pack $w.f.back $w.f.canc -side left -pady 10 -padx 45	pack $w.f -pady 10 -side bottom -padx 10 -anchor w	focus $w	global winx; global winy	set winx [expr [winfo x .]+30]; set winy [expr [winfo y .]+30]	wm geometry $w +$winx+$winy}proc read_config_file { w } {	global loadfile	if { [string length $loadfile] != 0 && [file readable $loadfile] == 1 } then {		read_config $loadfile	} else {		catch {destroy $w}		toplevel $w -class Dialog		message $w.m -width 400 -aspect 300 -text \			"Unable to read file $loadfile" \			 -relief raised 		label $w.bm -bitmap error		pack $w.bm $w.m -pady 10 -side top -padx 10		wm title $w "Xconfig Internal Error" 		set oldFocus [focus]		frame $w.f		button $w.f.back -text "Bummer" \			-width 10 -command "destroy $w; focus $oldFocus"		pack $w.f.back -side bottom -pady 10 -anchor s		pack $w.f -pady 10 -side top -padx 10 -anchor s		focus $w		global winx; global winy		set winx [expr [winfo x .]+30]; set winy [expr [winfo y .]+30]		wm geometry $w +$winx+$winy	}}proc write_config_file  { w } {	global loadfile	if { [string length $loadfile] != 0     		&& ([file writable $loadfile] == 1 || ([file exists $loadfile] == 0 && [file writable [file dirname $loadfile]] == 1)) } then {		writeconfig $loadfile /dev/null	} else {		catch {destroy $w}		toplevel $w -class Dialog		message $w.m -width 400 -aspect 300 -text \			"Unable to write file $loadfile" \			 -relief raised 		label $w.bm -bitmap error		pack $w.bm $w.m -pady 10 -side top -padx 10		wm title $w "Xconfig Internal Error" 		set oldFocus [focus]		frame $w.f		button $w.f.back -text "OK" \			-width 10 -command "destroy $w; focus $oldFocus"		pack $w.f.back -side bottom -pady 10 -anchor s		pack $w.f -pady 10 -side top -padx 10 -anchor s		focus $w		global winx; global winy		set winx [expr [winfo x .]+30]; set winy [expr [winfo y .]+30]		wm geometry $w +$winx+$winy	}}proc read_config { filename } {	set file1 [open $filename r]	clear_choices	while { [gets $file1 line] >= 0} {		if [regexp {([0-9A-Za-z_]+)=([ynm])} $line foo var value] {			if { $value == "y" } then { set cmd "global $var; set $var 1" }			if { $value == "n" } then { set cmd "global $var; set $var 0" }			if { $value == "m" } then { set cmd "global $var; set $var 2" }			eval $cmd		}		if [regexp {# ([0-9A-Za-z_]+) is not set} $line foo var] {			set cmd "global $var; set $var 0"			eval $cmd		}		if [regexp {([0-9A-Za-z_]+)=([0-9A-Fa-f]+)} $line foo var value] {			set cmd "global $var; set $var $value"			eval $cmd		}		if [regexp {([0-9A-Za-z_]+)="([^"]*)"} $line foo var value] {			set cmd "global $var; set $var \"$value\""			eval $cmd		}	}	close $file1	update_choices	update_mainmenu}proc write_comment { file1 file2 text } {    	puts $file1 ""	puts $file1 "#"	puts $file1 "# $text"	puts $file1 "#"	puts $file2 "/*"	puts $file2 " * $text"	puts $file2 " */"}proc effective_dep { deplist } {	global CONFIG_MODULES	set depend 1	foreach i $deplist {		if {$i == 0} then {set depend 0}		if {$i == 2 && $depend == 1} then {set depend 2}	}	if {$depend == 2 && $CONFIG_MODULES == 0} then {set depend 0}	return $depend}proc sync_tristate { var dep } {	global CONFIG_MODULES	if {$dep == 0 && ($var == 1 || $var == 2)} then {		set var 0	} elseif {$dep == 2 && $var == 1} then {		set var 2	} elseif {$var == 2 && $CONFIG_MODULES == 0} then {		if {$dep == 1} then {set var 1} else {set var 0}	}	return $var}proc sync_bool { var dep modset } {	set var [sync_tristate $var $dep]	if {$dep == 2 && $var == 2} then {		set var $modset	}	return $var}proc write_tristate { file1 file2 varname variable deplist modset } {	set variable [sync_tristate $variable [effective_dep $deplist]]	if { $variable == 2 } \		then { set variable $modset }	if { $variable == 1 } \		then { puts $file1 "$varname=y"; \		       puts $file2 "#define $varname 1" } \	elseif { $variable == 2 } \		then { puts $file1 "$varname=m"; \		       puts $file2 "#undef  $varname"; \		       puts $file2 "#define ${varname}_MODULE 1" } \	elseif { $variable == 0 } \		then { puts $file1 "# $varname is not set"; \		       puts $file2 "#undef  $varname"} \	else { \	    puts stdout "ERROR - Attempting to write value for unconfigured variable ($varname)." \	}