st/scripts/st_buffer

#!/usr/bin/env bash
# externalpipe_buffer.sh: use with surf/st externalpipe-signal patches
#   Input Usage: echo st or surf content from externalpipe | ./externalpipe_buffer.sh {st,surf}_strings_read
#   Menus Usage: ./externalpipe_buffer.sh dmenu_{copy, type}

[ -z "$RUNLAUNCHER" ] && RUNLAUNCHER=spmenu
BUFFER_FILE=/tmp/content_buffer
function st_strings_read() {
  INPUT="$(cat)"
  echo "$(
    echo "$INPUT" | grep -Eo '\S+' | tr -d '[:blank:]'
    echo "$INPUT" | grep -oP '"[^"]+"' | tr -d '"'
    echo "$INPUT" | sed 's/^ *[0-9]\+.//g' | awk '{$1=$1};1'
  )" | uniq | grep . | awk '{ print length, $0 }' | sort -n -s | cut -d" " -f2- \
  >> $BUFFER_FILE &
}
function surf_strings_read() {
  awk '{printf "%sNEWLINE_REPLACE", $0} END {printf "\n"}' |
    xmllint --html --xpath "//*" - |
    awk '{ gsub("<[^>]*>", ""); print($0); }' |
    sed 's/NEWLINE_REPLACE/↵/g' |
    awk '{ gsub("<[^>]*>",""); print $0 }' |
    sed 's/&lt;/</g' |
    sed 's/&gt;/>/g' |
    uniq | grep . | awk '{ print length, $0 }' | sort -n -s | cut -d" " -f2- \
    >> $BUFFER_FILE &
}
function trigger_sigusr1() {
  USE_FIFO=F # Recomended as T but only if using dmenu-stdin patch w/ FIFO
  rm -f $BUFFER_FILE
  if [ $USE_FIFO == T ]; then mkfifo $BUFFER_FILE; else touch $BUFFER_FILE; fi
  pkill -USR1 "surf" &
  pkill -USR1 "^st$" &
  if [ $USE_FIFO != T ]; then sleep 0.8; fi
}
function dmenu_copy() {
  trigger_sigusr1
  cat $BUFFER_FILE | $RUNLAUNCHER -l 10 -i -w $(xdotool getactivewindow) -p 'Screen Copy' | sed 's/↵/\n/g' | xclip -i
}
function dmenu_type() {
  trigger_sigusr1
  cat $BUFFER_FILE | $RUNLAUNCHER -l 10 -i -w $(xdotool getactivewindow) -p 'Screen Type' | sed 's/↵/\n/g' | xargs -IC xdotool type --delay 0 "C"
}
function pipe_combine() {
  trigger_sigusr1
  cat - $BUFFER_FILE
}

$1