view

#!/bin/bash

TGT="$1"
TGT=${TGT:-./}

EDITOR="vim -c:{2} {1}"
TOPDIR="$PWD"
TMPFILE=$(mktemp "/tmp/view-$USER-XXXXXX")

# Break execution and keep term clean
quit() { rm -rf $TMPFILE ; echo -e "\e[0m" ; exit; }

# Keep a sound terminal
trap quit SIGINT

while : ; do
    COL=$(tput cols)
    read pathindicator <<< $(sed 's/.*\(\(\/[^/]\+\)\{2\}\)$/\1/g' <<< $PWD)
    [[ "$pathindicator" != "$PWD" ]] && pathindicator="…${pathindicator}"

    # Smart orientation...
    # useful with tiling WM's and Termux usage
    #if [[ $COL -lt 200 ]]; then
        prevwin='top,80%,border-bottom'
    #else
    #    prevwin='right,80%,border-left'
    #fi
    grep -Rn '^--\$\|^--|\ #'  | sed 's/:--\(\$|\|\s*#\)\s*/:/g' |\
        fzf \
        --color 16 \
        --delimiter=: --margin=0 \
        --keep-right --preview-window="${prevwin}" \
        --info=inline --prompt=" $pathindicator > "\
        --layout=reverse-list \
        --bind "enter:execute($EDITOR)" \
        --bind "ctrl-e:execute($EDITOR)" \
        --bind "alt-up:preview-page-up" \
        --bind "alt-down:preview-page-down" \
        --bind "tab:execute(echo \"cd;{1}\" > \"${TMPFILE}\")+accept" \
        --bind "backward-eof:execute(echo \"cd;..\" > \"${TMPFILE}\")+accept" \
        --preview='bat --paging=always --line-range {2}: --highlight-line {2} --color=always --wrap=character --number {1} | less -R +e{2}'
    [[ $? -eq 130 ]] && quit
    read cmd <<< $(cut -d\; -f1  $TMPFILE)
    read opt <<< $(cut -d\; -f2- $TMPFILE)

    if [[ "$cmd" == "cd" ]]; then
        if [[ "$opt" == ".." ]]; then
            [[ "$TOPDIR" != "$PWD" ]] && cd ..
        else
            cd "$(cut -d\' -f2 <<< "$(dirname "$opt")")"
        fi
    fi
done
quit