# Copyright (C) 1992-2016 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>.

# A hairy pattern to recognize text.
set text "\[- A-Za-z0-9\.\;\"\_\:\'\`\(\)\!\#\=\+\?\&\*<>]"

set SIZE size
if { [which $SIZE] == 0 } {
    perror "Can't find $SIZE."
}

# Get the size of the various section in OBJECT.
proc exe_size {object} {
    global SIZE

    # Make sure size exists
    if { [which $SIZE] == 0 } {
	return [list "-1" "Can't find $SIZE."]
    } else {
	verbose "Using $SIZE for \"size\" program." 2
    }
    set status [catch "exec $SIZE -V" output]
    if {[regexp "GNU size" $output] == 0} {
	perror "Need GNU size from the binutils" 0
	return [list "-1" "Need GNU size."]
    }

    # Get the object size. We pass -x, to force hex output
    verbose "Getting the object file size for $object" 2
    set status [catch "exec $SIZE -x $object" output]
    verbose -log "Size of $object is\n$output" 2

    # Remove the header line from the size output. This currently only
    # works with GNU size
    regsub "text.*filename\[\r\n\]*" $output "" output

    # look for the size of the .text section
    regexp "\[\r\n\]*0x\[0-9a-fA-F\]*" $output text
    regsub "\[\r\n\]*0x\[0-9a-fA-F\]*\[ \t\]*" $output "" output

    # look for the size of the .data section
    regexp "0x\[0-9a-fA-F\]*\[ \t\]*" $output data
    regsub "0x\[0-9a-fA-F\]*\[ \t\]*" $output "" output

    # Values returns as hex
    return [list $text $data]
}

# Run the host's native compiler, not the cross one. Filter out the
# warnings and other extraneous stuff.
#    Returns:
#	A "" (empty) string if everything worked, or the
#       output if there was a problem.
#
proc host_compile {compline} {
    global INCLUDES
    global LIBS
    global CXX, CC

    # execute the compiler
    verbose "Compiling for the host using: $CC $INCLUDES $LIBS $compline" 2
    set status [catch "exec $CC $INCLUDES $LIBS $compline" comp_output]
    verbose "Compiler returned $comp_output" 2

    # prune common warnings and other stuff we can safely ignore
    set comp_output [prune_warnings $comp_output]

    # Trim multiple CR/LF pairs out to keep things consistent
    regsub "^\[\r\n\]+" $comp_output "" comp_output

    # if we got a compiler error, log it
    if { [lindex $status 0] != 0 } {
	verbose -log "compiler exited with status [lindex $status 0]"
    }
    if { [lindex $status 1] != "" } {
	verbose -log "output is:\n[lindex $status 1]" 2
    }

    # return the filtered output
    return ${comp_output}
}

# Execute the executable file, and analyse the output for the test
# state keywords.
#    Returns:
#	A "" (empty) string if everything worked, or an error message
#	if there was a problem.
#
proc host_execute {args} {
    global text

    set timeoutmsg "Timed out: Never got started, "
    set timeout 100
    set file all
    set timetol 0
    set arguments ""

    if { [llength $args] == 0} {
	set executable $args
    } else {
	set executable [string trimleft [lindex [split $args " "] 0] "\{"]
	set params [string trimleft [lindex [split $args " "] 1] "\{"]
	set params [string trimright $params "\}"]
    }

    verbose "The executable is $executable" 2
    if {![file exists ${executable}]} {
	perror "The executable, \"$executable\" is missing" 0
	return "No source file found"
    }

    # spawn the executable and look for the DejaGnu output messages from the
    # test case.
    # spawn -noecho -open [open "|./${executable}" "r"]
    spawn -noecho "./${executable}" ${params}
    set prefix "\[^\r\n\]*"
    expect {
	-re "^$prefix\[0-9\]\[0-9\]:..:..:${text}*\r\n" {
	    regsub "\[\n\r\t\]*NOTE: $text\r\n" $expect_out(0,string) "" output
	    verbose "$output" 3
	    set timetol 0
	    exp_continue
	}
	-re "^$prefix\tNOTE:${text}*" {
	    regsub "\[\n\r\t\]*NOTE: $text\r\n" $expect_out(0,string) "" output
	    set output [string range $output 6 end]
	    verbose "$output" 2
	    set timetol 0
	    exp_continue
	}
	-re "^$prefix\tPASSED:${text}*" {
	    regsub "\[\n\r\t\]*PASSED: $text\r\n" $expect_out(0,string) "" output
	    set output [string range $output 8 end]
	    pass "$output"
	    set timetol 0
	    exp_continue
	}
	-re "^$prefix\tFAILED:${text}*" {
	    regsub "\[\n\r\t\]*FAILED: $text\r\n" $expect_out(0,string) "" output
	    set output [string range $output 8 end]
	    fail "$output"
	    set timetol 0
	    exp_continue
	}
	-re "^$prefix\tUNTESTED:${text}*" {
	    regsub "\[\n\r\t\]*TESTED: $text\r\n" $expect_out(0,string) "" output
	    set output [string range $output 8 end]
	    untested "$output"
	    set timetol 0
	    exp_continue
	}
	-re "^$prefix\tUNRESOLVED:${text}*" {
	    regsub "\[\n\r\t\]*UNRESOLVED: $text\r\n" $expect_out(0,string) "" output
	    set output [string range $output 8 end]
	    unresolved "$output"
	    set timetol 0
	    exp_continue
	}
	-re "^Totals" {
	    verbose "All done" 2
	}
	eof {
	    #	    unresolved "${executable} died prematurely"
	    #	    catch close
	    #	    return "${executable} died prematurely"
	}
	timeout {
	    warning "Timed out executing test case"
	    if { $timetol <= 2 } {
		incr timetol
		exp_continue
	    } else {
		catch close
		return "Timed out executing test case"
	    }
	}
	-re "^$prefix\r\n" {
	    exp_continue
	}
    }

    # force a close of the executable to be safe.
    catch close
    return ""
}