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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

}