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+# Copyright (C) 92, 93, 94, 95, 96, 97, 98, 1999 Free Software Foundation, Inc.
+
+# 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 Rob Savoye. (rob@cygnus.com)
+
+#
+# Run a utility and test the result.
+#
+# Parameters:
+# First one is the command
+# Second one is command arguments
+# Third one is the file name
+# Fourth one is the regexp style pattern to match for a PASS
+#
+# Returns:
+# 1 if the test failed,
+# 0 if the test passes,
+# -1 if there was an internal error.
+#
+
+proc util_test { args } {
+ global verbose
+ # get the parameters
+ set cmd [lindex $args 0]
+ verbose "Utility to execute is $cmd" 2
+ set cmd_arg [lindex $args 1]
+ verbose "Command line arguments are $cmd_arg" 2
+ set file [lindex $args 2]
+ verbose "The file name to use is $file" 2
+ set pattern [lindex $args 3]
+ verbose "The pattern to match is \"$pattern\"" 2
+
+ if [info exists file] {
+ if ![string match "" $file] {
+ if ![file exists $file] {
+ perror "$file doesn't exist"
+ return -1
+ }
+ }
+ }
+
+ # Run the utility to be tested and analyze the results.
+
+ set comp_output [util_start $cmd $cmd_arg $file]
+
+ verbose "Output is \"$comp_output\"" 2
+ verbose "Pattern is \"$pattern\"" 2
+
+ if [regexp "$pattern" $comp_output] {
+ verbose "Pattern matches." 2
+ return 0
+ }
+
+ verbose "Pattern does not match." 2
+ return 1
+}
+
+#
+# Run the utility
+#
+# Return NULL or the output.
+#
+
+proc util_start { args } {
+ global verbose
+ set cmd [lindex $args 0]
+ set cmd_arg [lindex $args 1]
+ set file [lindex $args 2]
+
+ if {[which $cmd] == 0} {
+ perror "Can't find $cmd"
+ return ""
+ }
+
+ if { $verbose > 0 } {
+ verbose "Spawning \"$cmd $cmd_arg $file\""
+ } else {
+ send_log "Spawning \"$cmd $cmd_arg $file\"\n"
+ }
+ catch "exec $cmd $cmd_arg $file" comp_output
+ if ![string match "" $comp_output] {
+ send_log "$comp_output\n"
+ }
+ return $comp_output
+}