set env(LC_ALL) "C"
regexp "(.*\/)testsuite" $objdir objdir topdir

# These are the same as include/c.h
set usage_help "\\s*-h, --help\\s+display this help and exit\\s+"
set usage_version "\\s*-V, --version\\s+output version information and exit\\s+"
set usage_man "\\s*For more details see \\S+\\."

proc kill_process pid {
    set cmdline "kill $pid"
    if { [catch { exec /bin/sh -c $cmdline } msg]} {
        warning "Could not kill process: $msg\n"
    }
}

proc procps_v_version { tool } {
  global topdir
  set toolpath ${topdir}${tool}
  set tmp [ exec $toolpath -V ]
  regexp "from procps-ng (\[0-9.\]*)" $tmp tmp version
  clone_output "$toolpath version $version\n"
}

proc free_version {} { procps_v_version free }
proc kill_version {} { procps_v_version kill }
proc pgrep_version {} { procps_v_version pgrep }
proc pkill_version {} { procps_v_version pkill }
proc pmap_version {} { procps_v_version pmap }
proc pwdx_version {} { procps_v_version pwdx }
proc sysctl_version {} { procps_v_version sysctl }
proc uptime_version {} { procps_v_version uptime }
proc vmstat_version {} { procps_v_version vmstat }
proc w_version {} { procps_v_version w }

#
#
# common utilities
proc expect_continue { testname reg } {
    expect {
        -re "$reg" { }
        eof { fail "$testname" }
        timeout { fail "$testname" }
    }
}

proc expect_pass { testname reg } {
    expect {
        -re "$reg" { pass "$testname" }
        default { fail "$testname" }
		timeout { fail "$testname" }
    }
}

proc expect_pipeproc_pass { testname reg } {
    global pipeproc_spawnid

    expect {
	-i $pipeproc_spawnid
        -re "$reg" { pass "$testname" }
        default { fail "$testname" }
		timeout { fail "$testname (timeout)" }
    }
}

proc expect_blank { testname } {
    expect {
        -re "\\w" { fail "$testname" }
        eof { pass "$testname" }
        timeout { pass "$testname" }
    }
}

proc expect_blank_continue { testname } {
    expect {
        -re "\\w" { fail "$testname" }
        eof { }
        timeout { pass "$testname (timeout)" }
    }
}

proc expect_table { test match_header match_items match_footer } {
    expect {
        -re "$match_header" {
            expect {
                -re "$match_items" {
                    expect {
                        -re "$match_footer" { pass "$test" }
                        default { fail "$test (footer)" }
                    }
                }
                default { fail "$test (items)" }
            }
        }
        default { fail "$test (header)" }
    }
}

proc expect_table_dsc { test match_header match_item } {
    expect {
        -re $match_header {}
        default {
            fail "$test (header)"
            return
        }
    }

    set do_loop 1
    set last_value 99999999
    set found_item 0
    while { $do_loop ==1 } {
    expect {
        -re $match_item {
            set current_value $expect_out(1,string)
            if { $current_value > $last_value } {
                fail "$test (sorting $current_value > $last_value)"
                return
            } else {
                set found_item 1
                set last_value $current_value
            }
        }
        default {
            if { $found_item == 0 } {
                fail "$test (items)"
            } else {
                pass $test
            }
            return
        }
    }
    }
    #expect {
    #    -re $match_footer { pass $test }
    #    default { fail "$test (footer)" }
    #}
}

proc expect_spawn_retval { test retval } {
    foreach {pid spawnid os_error_flag value} [wait] break

    if {$value == $retval} {
      return
    }
    fail "$test (exit value)"
}

proc make_pipeproc { } {
    global pipeproc_pid pipeproc_spawnid topdir

    set testproc_realpath "${topdir}/lib/test_process"

    set pipeproc_pid [ spawn $testproc_realpath ]
    set pipeproc_spawnid $spawn_id

}
proc make_testproc { } {
    global testproc_path testproc_comm testproc_arg_str testproc1_pid testproc2_pid topdir

    set testproc_realpath "${topdir}/lib/test_process"
    set testproc_comm "spcorp"

    set testproc_path [ exec mktemp -u ]
    exec ln -s $testproc_realpath $testproc_path

    spawn readlink $testproc_path
    expect {
        -re "^$testproc_realpath\\s*$" { }
        timeout { perror "test proc does not link to test process" }
        eof { perror "test proc does not link to test process" }
    }

    # make a process with the argument set to a fraction of ARG_MAX length
    # but small enough we do not run TCL out of memory for regular expressions
    # nor do we get argument list too long (104857 was found to work on Ubuntu 18.04)
    set max_arg_len [ expr min([ exec /usr/bin/getconf ARG_MAX ], 104857) ]
    # ensure we have enough slack to launch the test prog and pgrep
    set reserved_space [expr max([ string length $testproc_path ], [ string length $topdir ] + 10)]
    set testproc_arg_str "a"
    set i $reserved_space
    while {$i<$max_arg_len} {
      incr i
      append testproc_arg_str "a"
    }
    set testproc1_pid [ exec $testproc_path $testproc_arg_str & ]
    set testproc2_pid [ exec $testproc_path & ]
}

proc kill_testproc { } {
    global testproc_path testproc1_pid testproc2_pid

    kill_process $testproc1_pid
    kill_process $testproc2_pid
    file delete $testproc_path
}

proc kill_pipeproc { } {
    global pipeproc_pid
    kill_process $pipeproc_pid
}

proc get_tty {} {
    if { [catch { set raw_tty [ exec tty ] } msg]} {
        warning "No TTY found"
        return ""
    }
    regexp "/dev/(.+)" $raw_tty > tty
    if { $tty == "tty" } {
        warning "TTY is tty"
        return ""
    }

    return $tty
}