env/mblaze/mless.sh

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2020-03-12 00:25:28 +01:00
#!/bin/sh
# mless [MSG] - less(1)-wrapper around mshow
colorscan() {
awk '
function co(n, c) { e = ENVIRON["MCOLOR_" n]; return e ? e : c }
function fg(c, s) { return sprintf("\033[38;5;%03dm%s\033[0m", c, s) }
function so(s) { return sprintf("\033[1m%s\033[0m", s) }
/^>/ { print so(fg(co("CUR",119), $0)); next }
/^ *\\_/ { print fg(co("MISS",242), $0); next }
{ print }'
}
keyhandler() {
case "$?" in
0|1) exit $?;;
36) # $ goto end
mseq -C '$' 2>/dev/null
;;
78) # N go to next unseen message
nu=$(magrep -v -m1 :S .:) && mseq -C "$nu"
;;
107) # k next thread
mseq -C "$(mseq .+1: | sed -n '/^[^ <]/{p;q;}')"
;;
100) # d mark read
mflag -S .
mseq -f : | mseq -S
mseq -C +
;;
82) # R toggle raw mode
MLESS_RAW=$((1-$MLESS_RAW))
;;
72) # H toggle HTML mode
MLESS_HTML=$((1-$MLESS_HTML))
;;
94) # ^ goto parent
mseq -C '.^' 2>/dev/null
;;
esac
}
if [ -n "${NO_COLOR+set}" ]; then
colorscan() { cat -; }
fi
if [ "$1" = --filter ]; then
if [ "$2" = //scan ]; then
mscan : 2>/dev/null | colorscan
exit $?
fi
mseq -C "$2"
mscan .-2:.+3 2>/dev/null | colorscan
echo
if ! [ -f "$(mseq -r "$2")" ]; then
mseq "$2"
exit
fi
if [ $MLESS_RAW -eq 0 ]; then
if [ $MLESS_HTML -eq 1 ]; then
mshow -A text/html "$2"
else
mshow "$2"
fi | mcolor
else
mseq -r "$2"
echo
cat "$(mseq -r "$2")"
fi
exit $?
fi
if [ "$#" -eq 0 ] && ! [ -t 0 ]; then
mseq -S >/dev/null
set -- :
fi
if ! [ -t 1 ]; then
exec mseq :
fi
[ "$#" -eq 1 ] && set -- ${1:-.}
if [ "$#" -ge 1 ]; then
mseq -C "$1"
fi
nl="
"
export MLESS_RAW=0
export MLESS_HTML=0
if [ -f "$MBLAZE/mless" ]; then
export LESSKEY="$MBLAZE/mless"
elif [ -f "$HOME/.mblaze/mless" ]; then
export LESSKEY="$HOME/.mblaze/mless"
elif [ -f "$HOME/.mless" ]; then
export LESSKEY="$HOME/.mless"
fi
if [ -f "$MBLAZE/mless-key-handler" ]; then
. "$MBLAZE/mless-key-handler"
elif [ -f "$HOME/.mblaze/mless-key-handler" ]; then
. "$HOME/.mblaze/mless-key-handler"
elif [ -f "$HOME/.mless-key-handler" ]; then
. "$HOME/.mless-key-handler"
fi
while :; do
LESSOPEN="|$0 --filter %s" \
less -Ps"mless %f?m (message %i of %m).." -R \
"+:e $(mscan -n .)$nl" //scan $(mscan -n :)
keyhandler $?
done