#!/bin/sh
# $XTermId: uxterm,v 1.30 2023/05/03 23:47:34 tom Exp $
# -----------------------------------------------------------------------------
# this file is part of xterm
#
# Copyright 2001-2020,2023 by Thomas E. Dickey
#
# All Rights Reserved
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
# Except as contained in this notice, the name(s) of the above copyright
# holders shall not be used in advertising or otherwise to promote the
# sale, use or other dealings in this Software without prior written
# authorization.
# -----------------------------------------------------------------------------
#
# wrapper script to setup xterm with UTF-8 locale
whoami=uxterm
: "${XTERM_PROGRAM=xterm}"
# Check if there is a workable locale program. If there is not, we will read
# something via the standard error. Ignore whatever is written to the
# standard output.
locale=`sh -c "LC_ALL=C LC_CTYPE=C LANG=C locale >/dev/null" 2>&1`
found=no
# Check for -version and -help options, to provide a simple return without
# requiring the program to create a window:
if test $# = 1
then
case $1 in
-v|-ver*|-h|-he*)
$XTERM_PROGRAM "$@"
exit $?
;;
esac
fi
# Check environment variables that might be used for encoding:
for name in LC_ALL LC_CTYPE LANG
do
eval 'value=$'$name
if test -n "$value" ; then
case $value in
*.utf8|*.UTF8|*.utf-8|*.UTF-8)
found=yes
;;
*.utf8@*|*.UTF8@*|*.utf-8@*|*.UTF-8@*)
found=yes
;;
*)
value="" # ignore
continue # keep trying
;;
esac
break
fi
done
# If we didn't find one that used UTF-8, modify the safest one. Not everyone
# has a UTF-8 locale installed (and there appears to be no trivial/portable way
# to determine whether it is, from a shell script). We could check if the
# user's shell does not reset unknown locale specifiers, but not all shells do.
if test $found != yes ; then
if test -n "$value" ; then
value=`echo "${value}" |sed -e 's/[.@].*//'`.UTF-8
else
expect=
for name in LC_ALL LC_CTYPE LANG
do
eval 'check=$'$name
if test -n "$check"
then
expect=`echo "$check" | sed -e 's/[.@].*$//'`
test -n "$expect" && break
fi
done
if test -z "$expect" ; then
name="LC_CTYPE"
expect="en_US"
fi
value=`locale -a | awk -v "expect=$expect" 'BEGIN {
exact=""
maybe=""
}
/[.](utf|UTF)[-]?8(@.*)?$/ {
if (index($0, "C.") == 1) {
maybe=$0;
}
if (index($0, expect ".") == 1) {
exact=$0;
}
}
END {
if ( exact != "" ) {
print exact;
} else if ( maybe != "" ) {
print maybe;
} else {
print "";
}
}
'`
test -z "$value" && value="en_US.UTF-8"
fi
eval save=\$${name}
eval ${name}=${value}
eval export ${name}
if test -z "$locale" ; then
# The 'locale' program tries to do a sanity check.
check=`sh -c "locale >/dev/null" 2>&1`
if test -n "$check" ; then
eval ${name}="${save}"
eval export ${name}
echo "$whoami tried to use locale $value by setting \$$name" >&2
xmessage -file - <<EOF
$whoami tried unsuccessfully to use locale $value
by setting \$$name to "${value}".
EOF
exit 1
fi
fi
fi
# for testing:
#test -f ./xterm && XTERM_PROGRAM=./xterm
exec "$XTERM_PROGRAM" -class UXTerm -u8 "$@"
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