# Copyright (C) 1992-2019, 2020 Free Software Foundation, Inc.
#
# This file is part of DejaGnu.
#
# DejaGnu 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 3 of the License, or
# (at your option) any later version.
#
# DejaGnu 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 DejaGnu; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.

# This file was written by Rob Savoye <rob@welcomehome.org>.

# These variables are local to this file.
# This or more warnings and a test fails.
set warning_threshold 3
# This or more errors and a test fails.
set perror_threshold 1

proc mail_file { file to subject } {
    if {[file readable $file]} {
	catch "exec mail -s \"$subject\" $to < $file"
    }
}

# Insert DTD for xml format checking.
#
proc insertdtd { } {
    xml_output "<!DOCTYPE testsuite \[
<!-- testsuite.dtd -->
<!ELEMENT testsuite (test | summary)+>
<!ELEMENT test (input, output, result, name, prms_id )>
  <!ELEMENT input              (#PCDATA)>
  <!ELEMENT output             (#PCDATA)>
  <!ELEMENT result             (#PCDATA)>
  <!ELEMENT name               (#PCDATA)>
  <!ELEMENT prms_id            (#PCDATA)>
  <!ELEMENT summary            (result, description, total)>
  <!ELEMENT description        (#PCDATA)>
  <!ELEMENT total              (#PCDATA)>
\]>"
}

# Open the output logs.
#
proc open_logs { } {
    global outdir
    global tool
    global sum_file
    global xml_file
    global xml

    if { $tool eq "" } {
	set tool testrun
    }
    catch "file delete -force -- $outdir/$tool.sum"
    set sum_file [open [file join $outdir $tool.sum] w]
    if { $xml } {
	catch "file delete -force -- $outdir/$tool.xml"
	set xml_file [open [file join $outdir $tool.xml] w]
	xml_output "<?xml version=\"1.1\"?>"
	insertdtd
	xml_output "<testsuite>"
    }
    catch "file delete -force -- $outdir/$tool.log"
    log_file -a $outdir/$tool.log
    verbose "Opening log files in $outdir"
    if { $tool eq "testrun" } {
	set tool ""
    }
    fconfigure $sum_file -buffering line
}

# Close the output logs.
#
proc close_logs { } {
    global sum_file
    global xml
    global xml_file

    if { $xml } {
	xml_output "</testsuite>"
	catch "close $xml_file"
    }

    catch "close $sum_file"
}

# Check build host triplet for PATTERN.
# With no arguments it returns the triplet string.
#
proc isbuild { { pattern "" } } {
    global build_triplet
    global host_triplet

    if {![info exists build_triplet]} {
	set build_triplet $host_triplet
    }
    if {$pattern eq ""} {
	return $build_triplet
    }
    verbose "Checking pattern \"$pattern\" with $build_triplet" 2

    if {[string match $pattern $build_triplet]} {
	return 1
    } else {
	return 0
    }
}

# Is $board remote? Return a non-zero value if so.
#
proc isremote { board } {
    verbose "calling isremote $board" 3
    return [is_remote $board]
}

# Legacy library proc for isremote.
#
proc is_remote { board } {
    global host_board
    global target_list

    verbose "calling is_remote $board" 3
    # Remove any target variant specifications from the name.
    set board [lindex [split $board "/"] 0]

    # Map the host or build back into their short form.
    if { [board_info build name] eq $board } {
	set board "build"
    } elseif { [board_info host name] eq $board } {
	set board "host"
    }

    # We're on the "build". The check for the empty string is just for
    # paranoia's sake--we shouldn't ever get one. "unix" is a magic
    # string that should really go away someday.
    if { $board eq "build" || $board eq "unix" || $board eq "" } {
	verbose "board is $board, not remote" 3
	return 0
    }

    if { $board eq "host" } {
	if { [info exists host_board] && $host_board ne "" } {
	    verbose "board is $board, is remote" 3
	    return 1
	} else {
	    verbose "board is $board, host is local" 3
	    return 0
	}
    }

    if { $board eq "target" } {
	global current_target_name

	if {[info exists current_target_name]} {
	    # This shouldn't happen, but we'll be paranoid anyway.
	    if { $current_target_name ne "target" } {
		return [is_remote $current_target_name]
	    }
	}
	return 0
    }
    if {[board_info $board exists isremote]} {
	verbose "board is $board, isremote is [board_info $board isremote]" 3
	return [board_info $board isremote]
    }
    return 1
}

# If this is a Canadian (3 way) cross. This means the tools are
# being built with a cross compiler for another host.
#
proc is3way {} {
    global host_triplet
    global build_triplet

    if {![info exists build_triplet]} {
	set build_triplet $host_triplet
    }
    verbose "Checking $host_triplet against $build_triplet" 2
    if { $build_triplet eq $host_triplet } {
	return 0
    }
    return 1
}

# Check host triplet for PATTERN.
# With no arguments it returns the triplet string.
#
proc ishost { { pattern "" } } {
    global host_triplet

    if {$pattern eq ""} {
	return $host_triplet
    }
    verbose "Checking pattern \"$pattern\" with $host_triplet" 2

    if {[string match $pattern $host_triplet]} {
	return 1
    } else {
	return 0
    }
}

# Check target triplet for pattern.
#
# With no arguments it returns the triplet string.
# Returns 1 if the target looked for, or 0 if not.
#
proc istarget { { args "" } } {
    global target_triplet

    # if no arg, return the config string
    if {$args eq ""} {
	if {[info exists target_triplet]} {
	    return $target_triplet
	} else {
	    perror "No target configuration names found."
	}
    }

    set triplet [lindex $args 0]

    # now check against the canonical name
    if {[info exists target_triplet]} {
	verbose "Checking \"$triplet\" against \"$target_triplet\"" 2
	if {[string match $triplet $target_triplet]} {
	    return 1
	}
    }

    # nope, no match
    return 0
}

# Check to see if we're running the tests in a native environment
# Returns 1 if running native, 0 if on a target.
#
proc isnative { } {
    global target_triplet
    global build_triplet

    return [string equal $build_triplet $target_triplet]
}

# unknown -- called by expect if a proc is called that doesn't exist
#
# Rename unknown to tcl_unknown so that we can wrap tcl_unknown.
# This allows Tcl package autoloading to work in the modern age.

rename ::unknown ::tcl_unknown
proc unknown { args } {
    set code [catch {uplevel 1 ::tcl_unknown $args} msg]
    if { $code != 0 } {
	global errorCode
	global errorInfo
	global exit_status

	set ret_cmd [list return -code $code]

	clone_output "ERROR: (DejaGnu) proc \"$args\" does not exist."
	if {[info exists errorCode]} {
	    lappend ret_cmd -errorcode $errorCode
	    send_error "The error code is $errorCode\n"
	}
	if {[info exists errorInfo]} {
	    # omitting errorInfo from the propagated error makes this code
	    # invisible with the backtrace pointing directly to the problem
	    send_error "The info on the error is:\n$errorInfo\n"
	}
	set exit_status 2

	set unresolved_msg "testcase '[uplevel info script]' aborted"
	append unresolved_msg " at call to unknown command '$args'"
	unresolved $unresolved_msg

	lappend ret_cmd $msg
	if { $::dejagnu::opt::keep_going } {
	    eval $ret_cmd
	} else {
	    log_and_exit
	}
    } else {
	return $msg
    }
}

# Print output to stdout (or stderr) and to log file
#
# If the --all flag (-a) option was used then all messages go the the screen.
# Without this, all messages that start with a keyword are written only to the
# detail log file.  All messages that go to the screen will also appear in the
# detail log.  This should only be used by the framework itself using pass,
# fail, xpass, xfail, kpass, kfail, warning, perror, note, untested, unresolved,
# or unsupported procedures.
#
proc clone_output { message } {
    global sum_file
    global all_flag

    if { $sum_file ne "" } {
	puts $sum_file $message
    }

    regsub "^\[ \t\]*(\[^ \t\]+).*$" $message "\\1" firstword
    switch -glob -- $firstword {
	"PASS:" -
	"XFAIL:" -
	"KFAIL:" -
	"UNRESOLVED:" -
	"UNSUPPORTED:" -
	"UNTESTED:" {
	    if {$all_flag} {
		send_user -- "$message\n"
		return $message
	    } else {
		send_log -- "$message\n"
	    }
	}
	"ERROR:" -
	"WARNING:" -
	"NOTE:" {
	    send_error -- "$message\n"
	    return $message
	}
	default {
	    send_user -- "$message\n"
	    return $message
	}
    }
}

# Reset a few counters.
#
proc reset_vars {} {
    global test_names test_counts
    global warncnt errcnt

    # other miscellaneous variables
    global prms_id
    global bug_id

    # reset them all
    set prms_id	0
    set bug_id	0
    set warncnt 0
    set errcnt  0
    foreach x $test_names {
	set test_counts($x,count) 0
    }

    # Variables local to this file.
    global warning_threshold perror_threshold
    set warning_threshold 3
    set perror_threshold 1
}

proc log_and_exit {} {
    global exit_status
    global tool mail_logs outdir mailing_list

    log_summary total
    # extract version number
    if {[info procs ${tool}_version] ne ""} {
	if {[catch ${tool}_version output]} {
	    warning "${tool}_version failed:\n$output"
	}
    }
    close_logs
    verbose -log "runtest completed at [timestamp -format %c]"
    if {$mail_logs} {
	if { $tool eq "" } {
	    set tool testrun
	}
	mail_file $outdir/$tool.sum $mailing_list "Dejagnu Summary Log"
    }
    remote_close host
    remote_close target
    exit $exit_status
}

# Emit an XML tag, but escape XML special characters in the body.
proc xml_tag { tag body } {
    set escapes { < &lt; > &gt; & &amp; \" &quot; ' &apos; }
    for {set i 1} {$i < 32} {incr i} {
	if {[lsearch [list 9 10 13] $i] >= 0} {
	    # skip valid XML whitespace chars
	    continue
	}
	# Append non-printable character
	lappend escapes [format %c $i]
	# .. and then the corresponding XML escape
	lappend escapes &#x[format %x $i]\;
    }
    return <$tag>[string map $escapes $body]</$tag>
}

proc xml_output { message } {
    global xml_file
    if { $xml_file ne "" } {
	puts $xml_file $message
    }
}

# Print summary of all pass/fail counts.
#
proc log_summary { args } {
    global tool
    global sum_file
    global xml_file
    global xml
    global exit_status
    global mail_logs
    global outdir
    global mailing_list
    global current_target_name
    global test_counts

    if { [llength $args] == 0 } {
	set which "count"
    } else {
	set which [lindex $args 0]
    }

    if { [llength $args] == 0 } {
	clone_output "\n\t\t=== $tool Summary for $current_target_name ===\n"
    } else {
	clone_output "\n\t\t=== $tool Summary ===\n"
    }

    foreach x { PASS FAIL XPASS XFAIL KPASS KFAIL UNRESOLVED UNTESTED UNSUPPORTED } {
	set val $test_counts($x,$which)
	if { $val > 0 } {
	    set mess "# of $test_counts($x,name)"
	    if { $xml } {
		xml_output "  <summary>"
		xml_output "    [xml_tag result $x]"
		xml_output "    [xml_tag description $mess]"
		xml_output "    [xml_tag total $val]"
		xml_output "  </summary>"
	    }
	    if { [string length $mess] < 24 } {
		append mess "\t"
	    }
	    clone_output "$mess\t$val"
	}
    }
}

# Setup a flag to control whether a failure is expected or not
#
# Multiple target triplet patterns can be specified for targets
# for which the test fails.  A bug report ID can be specified,
# which is a string without '-'.
#
proc setup_xfail { args } {
    global xfail_flag
    global xfail_prms

    set xfail_prms 0
    set argc [ llength $args ]
    for { set i 0 } { $i < $argc } { incr i } {
	set sub_arg [ lindex $args $i ]
	# is a prms number. we assume this is a string with no '-' characters
	if {[regexp "^\[^\-\]+$" $sub_arg]} {
	    set xfail_prms $sub_arg
	    continue
	}
	if {[istarget $sub_arg]} {
	    set xfail_flag 1
	    continue
	}
    }
}

# Setup a flag to control whether it is a known failure.
#
# A bug report ID _MUST_ be specified, and is the first argument.
# It still must be a string without '-' so we can be sure someone
# did not just forget it and we end-up using a target triple as
# bug id.
#
# Multiple target triplet patterns can be specified for targets
# for which the test is known to fail.
#
proc setup_kfail { args } {
    global kfail_flag
    global kfail_prms

    set kfail_prms 0
    set argc [ llength $args ]
    for { set i 0 } { $i < $argc } { incr i } {
	set sub_arg [ lindex $args $i ]
	# is a prms number. we assume this is a string with no '-' characters
	if {[regexp "^\[^\-\]+$" $sub_arg]} {
	    set kfail_prms $sub_arg
	    continue
	}
	if {[istarget $sub_arg]} {
	    set kfail_flag 1
	    continue
	}
    }

    if {$kfail_prms == 0} {
	perror "Attempt to set a kfail without specifying bug tracking id"
    }
}

# Check to see if a conditional xfail is triggered.
#	message {targets} {include} {exclude}
#
proc check_conditional_xfail { args } {
    global compiler_flags

    set all_args [lindex $args 0]

    set message [lindex $all_args 0]

    set target_list [lindex $all_args 1]
    verbose "Limited to targets: $target_list" 3

    # get the list of flags to look for
    set includes [lindex $all_args 2]
    verbose "Will search for options $includes" 3

    # get the list of flags to exclude
    if { [llength $all_args] > 3 } {
	set excludes [lindex $all_args 3]
	verbose "Will exclude for options $excludes" 3
    } else {
	set excludes ""
    }

    # loop through all the targets, checking the options for each one
    verbose "Compiler flags are: $compiler_flags" 2

    set incl_hit 0
    set excl_hit 0
    foreach targ $target_list {
	if {[istarget $targ]} {
	    # look through the compiler options for flags we want to see
	    # this is really messy cause each set of options to look for
	    # may also be a list. We also want to find each element of the
	    # list, regardless of order to make sure they're found.
	    # So we look for lists in side of lists, and make sure all
	    # the elements match before we decide this is legit.
	    # Se we 'incl_hit' to 1 before the loop so that if the 'includes'
	    # list is empty, this test will report a hit.  (This can be
	    # useful if a target will always fail unless certain flags,
	    # specified in the 'excludes' list, are used.)
	    set incl_hit 1
	    for { set i 0 } { $i < [llength $includes] } { incr i } {
		set incl_hit 0
		set opt [lindex $includes $i]
		verbose "Looking for $opt to include in the compiler flags" 2
		foreach j $opt {
		    if {[string match "* $j *" $compiler_flags]} {
			verbose "Found $j to include in the compiler flags" 2
			incr incl_hit
		    }
		}
		# if the number of hits we get is the same as the number of
		# specified options, then we got a match
		if {$incl_hit == [llength $opt]} {
		    break
		} else {
		    set incl_hit 0
		}
	    }
	    # look through the compiler options for flags we don't
	    # want to see
	    for { set i 0 } { $i < [llength $excludes] } { incr i } {
		set excl_hit 0
		set opt [lindex $excludes $i]
		verbose "Looking for $opt to exclude in the compiler flags" 2
		foreach j $opt {
		    if {[string match "* $j *" $compiler_flags]} {
			verbose "Found $j to exclude in the compiler flags" 2
			incr excl_hit
		    }
		}
		# if the number of hits we get is the same as the number of
		# specified options, then we got a match
		if {$excl_hit == [llength $opt]} {
		    break
		} else {
		    set excl_hit 0
		}
	    }

	    # if we got a match for what to include, but didn't find any reasons
	    # to exclude this, then we got a match! So return one to turn this into
	    # an expected failure.
	    if {$incl_hit && ! $excl_hit } {
		verbose "This is a conditional match" 2
		return 1
	    } else {
		verbose "This is not a conditional match" 2
		return 0
	    }
	}
    }
    return 0
}

# Clear the xfail flag for a particular target.
#
proc clear_xfail { args } {
    global xfail_flag
    global xfail_prms

    set argc [ llength $args ]
    for { set i 0 } { $i < $argc } { incr i } {
	set sub_arg [ lindex $args $i ]
	switch -glob -- $sub_arg {
	    "*-*-*" {			# is a configuration triplet
		if {[istarget $sub_arg]} {
		    set xfail_flag 0
		    set xfail_prms 0
		}
		continue
	    }
	}
    }
}

# Clear the kfail flag for a particular target.
#
proc clear_kfail { args } {
    global kfail_flag
    global kfail_prms

    set argc [ llength $args ]
    for { set i 0 } { $i < $argc } { incr i } {
	set sub_arg [ lindex $args $i ]
	switch -glob -- $sub_arg {
	    "*-*-*" {			# is a configuration triplet
		if {[istarget $sub_arg]} {
		    set kfail_flag 0
		    set kfail_prms 0
		}
		continue
	    }
	}
    }
}

# Record that a test has passed or failed (perhaps unexpectedly).
# This is an internal procedure, only used in this file.
#
proc record_test { type message args } {
    global exit_status
    global xml
    global prms_id bug_id
    global xfail_flag xfail_prms
    global kfail_flag kfail_prms
    global errcnt warncnt
    global warning_threshold perror_threshold
    global pf_prefix

    if { [llength $args] > 0 } {
	set count [lindex $args 0]
    } else {
	set count 1
    }
    if {[info exists pf_prefix]} {
	set message [concat $pf_prefix " " $message]
    }

    # If we have too many warnings or errors,
    # the output of the test can't be considered correct.
    if { $warning_threshold > 0 && $warncnt >= $warning_threshold
	 || $perror_threshold > 0 && $errcnt >= $perror_threshold } {
	verbose "Error/Warning threshold exceeded: \
		 $errcnt $warncnt (max. $perror_threshold $warning_threshold)"
	set type UNRESOLVED
    }

    incr_count $type

    if { $xml } {
	global errorInfo
	set error ""
	if {[info exists errorInfo]} {
	    set error $errorInfo
	}
	global expect_out
	set rio { "" "" }
	if { [catch { set rio [split $expect_out(buffer) "\n"] } result]} {
	    #do nothing - leave as { "" "" }
	}

	set output ""
	set output "expect_out(buffer)"
	xml_output "  <test>"
	xml_output "    [xml_tag input [string trimright [lindex $rio 0]]]"
	xml_output "    [xml_tag output [string trimright [lindex $rio 1]]]"
	xml_output "    [xml_tag result $type]"
	xml_output "    [xml_tag name $message]"
	xml_output "    [xml_tag prms_id $prms_id]"
	xml_output "  </test>"
    }

    switch -- $type {
	PASS {
	    if {$prms_id} {
		set message [concat $message "\t(PRMS $prms_id)"]
	    }
	}
	FAIL {
	    set exit_status 1
	    if {$prms_id} {
		set message [concat $message "\t(PRMS $prms_id)"]
	    }
	}
	XPASS {
	    set exit_status 1
	    if { $xfail_prms != 0 } {
		set message [concat $message "\t(PRMS $xfail_prms)"]
	    }
	}
	XFAIL {
	    if { $xfail_prms != 0 } {
		set message [concat $message "\t(PRMS $xfail_prms)"]
	    }
	}
	KPASS {
	    set exit_status 1
	    if { $kfail_prms != 0 } {
		set message [concat $message "\t(PRMS $kfail_prms)"]
	    }
	}
	KFAIL {
	    if { $kfail_prms != 0 } {
		set message [concat $message "\t(PRMS: $kfail_prms)"]
	    }
	}
	UNTESTED {
	    # The only reason we look at the xfail/kfail stuff is to pick up
	    # `xfail_prms'.
	    if { $kfail_flag && $kfail_prms != 0 } {
		set message [concat $message "\t(PRMS $kfail_prms)"]
	    } elseif { $xfail_flag && $xfail_prms != 0 } {
		set message [concat $message "\t(PRMS $xfail_prms)"]
	    } elseif { $prms_id } {
		set message [concat $message "\t(PRMS $prms_id)"]
	    }
	}
	UNRESOLVED {
	    set exit_status 1
	    # The only reason we look at the xfail/kfail stuff is to pick up
	    # `xfail_prms'.
	    if { $kfail_flag && $kfail_prms != 0 } {
		set message [concat $message "\t(PRMS $kfail_prms)"]
	    } elseif { $xfail_flag && $xfail_prms != 0 } {
		set message [concat $message "\t(PRMS $xfail_prms)"]
	    } elseif { $prms_id } {
		set message [concat $message "\t(PRMS $prms_id)"]
	    }
	}
	UNSUPPORTED {
	    # The only reason we look at the xfail/kfail stuff is to pick up
	    # `xfail_prms'.
	    if { $kfail_flag && $kfail_prms != 0 } {
		set message [concat $message "\t(PRMS $kfail_prms)"]
	    } elseif { $xfail_flag && $xfail_prms != 0 } {
		set message [concat $message "\t(PRMS $xfail_prms)"]
	    } elseif { $prms_id } {
		set message [concat $message "\t(PRMS $prms_id)"]
	    }
	}
	default {
	    perror "record_test called with bad type `$type'"
	    set errcnt 0
	    return
	}
    }

    if { $bug_id } {
	set message [concat $message "\t(BUG $bug_id)"]
    }

    global multipass_name
    if { $multipass_name ne "" } {
	set message [format "%s: %s: %s" $type $multipass_name $message]
    } else {
	set message "$type: $message"
    }
    clone_output $message

    # If a command name exists in the $local_record_procs associative
    # array for this type of result, then invoke it.

    set lowcase_type [string tolower $type]
    global local_record_procs
    if {[info exists local_record_procs($lowcase_type)]} {
	$local_record_procs($lowcase_type) $message
    }

    # Reset these so they're ready for the next test case.  We don't reset
    # prms_id or bug_id here.  There may be multiple tests for them.  Instead
    # they are reset in the main loop after each test.  It is also the
    # testsuite driver's responsibility to reset them after each testcase.
    set warncnt 0
    set errcnt 0
    set xfail_flag 0
    set kfail_flag 0
    set xfail_prms 0
    set kfail_prms 0
}

# Record that a test has passed.
#
proc pass { message } {
    global xfail_flag kfail_flag compiler_conditional_xfail_data

    # if we have a conditional xfail setup, then see if our compiler flags match
    if {[ info exists compiler_conditional_xfail_data ]} {
	if {[check_conditional_xfail $compiler_conditional_xfail_data]} {
	    set xfail_flag 1
	}
	unset compiler_conditional_xfail_data
    }

    if { $kfail_flag } {
	record_test KPASS $message
    } elseif { $xfail_flag } {
	record_test XPASS $message
    } else {
	record_test PASS $message
    }
}

# Record that a test has failed.
#
proc fail { message } {
    global xfail_flag kfail_flag compiler_conditional_xfail_data

    # if we have a conditional xfail setup, then see if our compiler flags match
    if {[ info exists compiler_conditional_xfail_data ]} {
	if {[check_conditional_xfail $compiler_conditional_xfail_data]} {
	    set xfail_flag 1
	}
	unset compiler_conditional_xfail_data
    }

    if { $kfail_flag } {
	record_test KFAIL $message
    } elseif { $xfail_flag } {
	record_test XFAIL $message
    } else {
	record_test FAIL $message
    }
}

# Record that a test that was expected to fail has passed unexpectedly.
#
proc xpass { message } {
    record_test XPASS $message
}

# Record that a test that was expected to fail did indeed fail.
#
proc xfail { message } {
    record_test XFAIL $message
}

# Record that a test for a known bug has passed unexpectedly.
#
proc kpass { bugid message } {
    global kfail_flag kfail_prms
    set kfail_flag 1
    set kfail_prms $bugid
    record_test KPASS $message
}

# Record that a test has failed due to a known bug.
#
proc kfail { bugid message } {
    global kfail_flag kfail_prms
    set kfail_flag 1
    set kfail_prms $bugid
    record_test KFAIL $message
}

# Set warning threshold.
#
proc set_warning_threshold { threshold } {
    global warning_threshold
    set warning_threshold $threshold
}

# Get warning threshold.
#
proc get_warning_threshold { } {
    global warning_threshold
    return $warning_threshold
}

# Prints warning messages.
# These are warnings from the framework, not from the tools being
# tested.  It takes a string, and an optional number and returns
# nothing.
#
proc warning { args } {
    global warncnt

    if { [llength $args] > 1 } {
	set warncnt [lindex $args 1]
    } else {
	incr warncnt
    }
    set message [lindex $args 0]

    clone_output "WARNING: $message"

    global errorInfo
    if {[info exists errorInfo]} {
	unset errorInfo
    }
}

# Prints error messages.
# These are errors from the framework, not from the tools being
# tested.  It takes a string, and an optional number and returns
# nothing.
#
proc perror { args } {
    global errcnt

    if { [llength $args] > 1 } {
	set errcnt [lindex $args 1]
    } else {
	incr errcnt
    }
    set message [lindex $args 0]

    clone_output "ERROR: $message"

    global errorInfo
    if {[info exists errorInfo]} {
	unset errorInfo
    }
}

# Prints informational messages.
#
# These are messages from the framework, not from the tools being
# tested.  This means that it is currently illegal to call this proc
# outside of dejagnu proper.
#
proc note { message } {
    clone_output "NOTE: $message"
}

# untested -- mark the test case as untested.
#
proc untested { message } {
    record_test UNTESTED $message
}

# Mark the test case as unresolved.
#
proc unresolved { message } {
    record_test UNRESOLVED $message
}

# Mark the test case as unsupported.
# Usually this is used for a test that is missing OS support.
#
proc unsupported { message } {
    record_test UNSUPPORTED $message
}

# Set up the values in the test_counts array (name and initial
# totals).
#
proc init_testcounts { } {
    global test_counts test_names
    set test_counts(TOTAL,name) "testcases run"
    set test_counts(PASS,name) "expected passes"
    set test_counts(FAIL,name) "unexpected failures"
    set test_counts(XFAIL,name) "expected failures"
    set test_counts(XPASS,name) "unexpected successes"
    set test_counts(KFAIL,name) "known failures"
    set test_counts(KPASS,name) "unknown successes"
    set test_counts(WARNING,name) "warnings"
    set test_counts(ERROR,name) "errors"
    set test_counts(UNSUPPORTED,name) "unsupported tests"
    set test_counts(UNRESOLVED,name) "unresolved testcases"
    set test_counts(UNTESTED,name) "untested testcases"
    set j ""

    foreach i [lsort [array names test_counts]] {
	regsub ",.*$" $i "" i
	if { $i == $j } {
	    continue
	}
	set test_counts($i,total) 0
	lappend test_names $i
	set j $i
    }
}

# Increment NAME in the test_counts array; the amount to increment can
# be is optional (defaults to 1).
#
proc incr_count { name args } {
    global test_counts

    if { [llength $args] == 0 } {
	set count 1
    } else {
	set count [lindex $args 0]
    }
    if {[info exists test_counts($name,count)]} {
	incr test_counts($name,count) $count
	incr test_counts($name,total) $count
    } else {
	perror "$name doesn't exist in incr_count"
    }
}

## API implementations and multiplex calls

# Return or provide information about the current testsuite.  (multiplex)
#
proc testsuite { subcommand args } {
    if { $subcommand eq "file" } {
	testsuite_file $args
    } else {
	error "unknown \"testsuite\" command: testsuite $subcommand $args"
    }
}

# Return a full file name in or near the testsuite
#
proc testsuite_file { argv } {
    global testsuitedir testbuilddir testdir
    verbose "entering testsuite file $argv" 3
    set argc [llength $argv]
    set dir_must_exist true
    set basedir $testsuitedir
    for { set argi 0 } { $argi < $argc } { incr argi } {
	set arg [lindex $argv $argi]
	if { $arg eq "--" } { # explicit end of arguments
	    break
	} elseif { $arg eq "-object" } {
	    set basedir $testbuilddir
	} elseif { $arg eq "-source" } {
	    set basedir $testsuitedir
	} elseif { $arg eq "-top" } {
	    set dirtail ""
	} elseif { $arg eq "-test" } {
	    set dirtail $testdir
	} elseif { $arg eq "-hypothetical" } {
	    set dir_must_exist false
	} elseif { [string match "-*" $arg] } {
	    error "testsuite file: unrecognized flag [lindex $argv $argi]"
	} else { # implicit end of arguments
	    break
	}
    }
    if { [lindex $argv $argi] eq "--" } { incr argi }
    if { ![info exists dirtail] } {
	error "testsuite file requires one of -top|-test\n\
		   but was given: $argv"
    }
    if { $dirtail ne "" } {
	set dirtail [relative_filename $testsuitedir $dirtail]
    }
    set result [eval [list file join $basedir $dirtail] [lrange $argv $argi end]]

    verbose "implying: [file dirname $result]" 3
    if { $dir_must_exist && ![file isdirectory [file dirname $result]] } {
	if { $basedir eq $testbuilddir } {
	    file mkdir [file dirname $result]
	    verbose "making directory" 3
	} else {
	    error "directory '[file dirname $result]' does not exist"
	}
    }

    verbose "leaving testsuite file: $result" 3
    return $result
}