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|
#!/bin/bash
BASH_ARGV0=write-tty
echo -n "$0" >/proc/$BASHPID/comm
output_filter()
{
tokenize | colorize | soft_cursor
}
chr()
{
declare -i n="$*"
printf "$(printf '\%o' "$n")"
}
colorize()
{
BASH_ARGV0=colorize
echo -n "$0" >/proc/$BASHPID/comm
while read -r
do
case "$REPLY" in
\\[0-7][0-7][0-7] )
declare -i c=8#"${REPLY#?}"
;;
\\U[0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] )
declare -i c=16#"${REPLY#??}"
;;
* )
printf '%s\n' "$REPLY"
continue
;;
esac
if (( c > 128 + 127 ))
then
:
elif (( c > 128 + 32 ))
then
REPLY=M-$(chr c - 128)
elif (( c > 127 ))
then
REPLY=M-^$(chr c - 128 + 64)
elif (( c < 32 ))
then
REPLY=^$(chr c + 64)
fi
printf $'\e[106m%s\e[m\n' "$REPLY"
done
}
tokenize()
{
BASH_ARGV0=tokenize
echo -n "$0" >/proc/$BASHPID/comm
while read -r -n1 -d ''
do
if [[ "$REPLY" =~ [[:print:]] ]]
then
# Output one printable character per line. It may be a
# multibyte unicode character.
printf '%s\n' "$REPLY"
continue
elif [ "$REPLY" ]
then
# If it is a non-printable, then we output a
# multi-character line. In this case we colorize it
# later so that it won't be confused with multiple
# printable characters.
bytelen=$(LC_ALL=C; echo ${#REPLY})
if (( bytelen == 1 ))
then
printf '\\%.3o\n' "'$REPLY"
else
hexdigits=$(LC_ALL=C; for ((i=0; i<$bytelen; ++i))
do
printf '%.2x' "'${REPLY:$i:1}"
printf '%.2x\n' "'${REPLY:$i:1}" >&2
done)
printf '%s%.8x\n' '\U' 0x"$hexdigits"
fi
else
printf '\\%.3o\n' 0
fi
done
}
soft_cursor()
{
BASH_ARGV0=soft_cursor
echo -n "$0" >/proc/$BASHPID/comm
FMT=$'%s \b\e[%sm \e[m \b\b'
REPLY=
color=105
while printf "$FMT" "$REPLY" "$color"
do
read -r || break
done
}
output_filter
|
