tests/misc/stty-pairs.sh

   1 #!/bin/sh
   2 # Make sure stty can parse most of its options - in pairs [expensive].
   3
   4 # Copyright (C) 1998-2019 Free Software Foundation, Inc.
   5
   6 # This program is free software: you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation, either version 3 of the License, or
   9 # (at your option) any later version.
  10
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  18
  19 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  20 print_ver_ stty
  21
  22 expensive_
  23
  24 # Make sure there's a tty on stdin.
  25 require_controlling_input_terminal_
  26 require_trap_signame_
  27
  28 trap '' TTOU # Ignore SIGTTOU
  29
  30 # Get the reversible settings from stty.c.
  31 stty_reversible_init_
  32
  33 saved_state=.saved-state
  34 stty --save > $saved_state || fail=1
  35 stty $(cat $saved_state) || fail=1
  36
  37 # Build a list of all boolean options stty accepts on this system.
  38 # Don't depend on terminal width.  Put each option on its own line,
  39 # remove all non-boolean ones, remove 'parenb' and 'cread' explicitly,
  40 # then remove any leading hyphens.
  41 sed_del='/^speed/d;/^rows/d;/^columns/d;/ = /d;s/parenb//;s/cread//'
  42 options=$(stty -a | tr -s ';' '\n' | sed "s/^ //;$sed_del;s/-//g")
  43
  44 # Take them in pairs, with and without the leading '-'.
  45 for opt1 in $options; do
  46   for opt2 in $options; do
  47
  48     stty $opt1 $opt2 || fail=1
  49
  50     if stty_reversible_query_ "$opt1" ; then
  51       stty -$opt1 $opt2 || fail=1
  52     fi
  53     if stty_reversible_query_ "$opt2" ; then
  54       stty $opt1 -$opt2 || fail=1
  55     fi
  56     if stty_reversible_query_ "$opt1" \
  57         && stty_reversible_query_ "$opt2" ; then
  58       stty -$opt1 -$opt2 || fail=1
  59     fi
  60   done
  61 done
  62
  63 stty $(cat $saved_state)
  64
  65 Exit $fail