--- /dev/null
+# Copyright (C) 1996 Cygnus Support
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+# Please email any bugs, comments, and/or additions to this file to:
+# bug-dejagnu@prep.ai.mit.edu
+
+# This file was written by Tom Tromey <tromey@cygnus.com>
+
+set testdrv "unix/tktest"
+set tprompt "%"
+
+#
+# Extract and print the version number of wish.
+#
+proc tk_version {} {
+ global testdrv
+ if {! [catch {exec $testdrv -version} output]
+ && ! [regsub {^.*version } $output {} version]} then {
+ clone_output "Tk library is version\t$version\n"
+ }
+}
+
+#
+# Source a file.
+#
+proc tk_load {file} {
+ global subdir testdrv spawn_id
+
+ if {! [file exists $file]} then {
+ perror "$file does not exist."
+ return -1
+ }
+
+ verbose "Sourcing $file..."
+ send "source $file\n"
+ return 0
+}
+
+#
+# Exit the test driver.
+#
+proc tk_exit {} {
+ # If we started Xvfb, we should kill it. This doesn't happen right
+ # now, so this proc does nothing.
+ # xvfb_exit
+}
+
+#
+# Find X display to use. Return 0 if not found. Set DISPLAY
+# environment variable if display found.
+#
+proc find_x_display {} {
+ global env
+
+ if {[info exists env(TEST_DISPLAY)]} then {
+ set env(DISPLAY) $env(TEST_DISPLAY)
+ return 1
+ }
+
+ return 0
+}
+
+#
+# Start the test driver.
+#
+proc tk_start {} {
+ global testdrv objdir subdir srcdir spawn_id tprompt
+
+ set testdrv "$objdir/$testdrv"
+ set defs "$srcdir/../tests/defs"
+
+ set timeout 100
+ set timetol 0
+
+ if {! [find_x_display]} then {
+ return -1
+ }
+
+ spawn $testdrv
+
+ if ![file exists ${srcdir}/../tests] {
+ perror "The source for the test cases is missing." 0
+ return -1
+ }
+
+ send "[list set srcdir ${srcdir}/../tests]\r"
+ expect {
+ -re "set VERBOSE 1\[\r\n\]*1\[\r\n\]*%" {
+ verbose "Set verbose flag for tests"
+ exp_continue
+ }
+ -re "${srcdir}/../tests\[\r\n\]*$tprompt" {
+ verbose "Set srcdir to $srcdir/../tests" 2
+ }
+ -re "no files matched glob pattern" {
+ warning "Didn't set srcdir to $srcdir/../tests"
+ }
+ timeout {
+ perror "Couldn't set srcdir"
+ return -1
+ }
+ }
+
+ if ![file exists $defs] then {
+ perror "$defs does not exist."
+ return -1
+ }
+
+ verbose "Sourcing $defs..."
+ send "source $defs\r\n"
+
+ expect {
+ -re ".*source $defs.*$" {
+ verbose "Sourced $defs"
+ }
+ "Error: couldn't read file*" {
+ perror "Couldn't source $defs"
+ return -1
+ }
+ "%" {
+ verbose "Got prompt, sourced $defs"
+ }
+ timeout {
+ warning "Timed out sourcing $defs."
+ if { $timetol <= 3 } {
+ incr timetol
+ exp_continue
+ } else {
+ return -1
+ }
+ }
+ }
+
+ set timetol 0
+ sleep 2
+ send "set VERBOSE 1\n"
+ expect {
+ -re "% 1.*%" {
+ verbose "Set verbose flag for tests"
+ }
+ -re "set VERBOSE 1.*1.*%" {
+ verbose "Set verbose flag for tests"
+ }
+ timeout {
+ perror "Timed out setting verbose flag."
+ if { $timetol <= 3 } {
+ exp_continue
+ } else {
+ return -1
+ }
+ }
+ }
+ return $spawn_id
+}
+
+################################################################
+#
+# Utility functions.
+#
+
+proc read_file {name} {
+ set id [open $name r]
+ set contents [read $id]
+ close $id
+ return $contents
+}
+
+proc write_file {name contents} {
+ set id [open $name w]
+ puts -nonewline $id $contents
+ close $id
+}
+
+# NOTE that this fails to copy files with NULs in them. Change
+# implementation to "exec cp" if required.
+proc copy_file {from to} {
+ write_file $to [read_file $from]
+}
+
+################################################################
+#
+# Start/stop Xvfb. These procs aren't used right now; we assume Xvfb
+# is already running.
+#
+
+#
+# Stop Xvfb.
+#
+proc xvfb_exit {} {
+ global Xvfb_spawn_id
+
+ # Send C-c to kill it.
+ send -i $Xvfb_spawn_id "\003"
+}
+
+#
+# Start Xvfb. Return 0 on error, 1 if started. Set DISPLAY
+# environment variable on successful start.
+#
+#
+proc xvfb_start {} {
+ global spawn_id Xvfb_spawn_id Xvfb_screen env
+
+ # FIXME should look for Xvfb in build directory. Do this later,
+ # when we actually build Xvfb.
+
+ set Xvfb [which Xvfb]
+ # Why "0"? I don't know, but that is what the manual says.
+ if {$Xvfb == 0} then {
+ perror "Couldn't find Xvfb"
+ return 0
+ }
+ verbose "Xvfb is $Xvfb"
+
+ # Pick a number at random...
+ set Xvfb_screen 23
+
+ while {$Xvfb_screen < 100} {
+ spawn $Xvfb :$Xvfb_screen
+
+ expect {
+ "Server is already active" {
+ incr Xvfb_screen
+ }
+
+ timeout {
+ break
+ }
+ }
+ }
+
+ if {$Xvfb_screen == 100} then {
+ perror "Xvfb screen is 100!"
+ return 0
+ }
+
+ set Xvfb_spawn_id $spawn_id
+ set env(DISPLAY) :$Xvfb_screen
+ verbose "Screen is :$Xvfb_screen"
+ return 1
+}
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