fzf-search

#!/bin/bash

# # debug
# set -o xtrace

declare SRCDIR
SRCDIR=$(dirname $(readlink -e $0))

if [[ $1 =~ -h|--help ]]; then
    man -l $SRCDIR/help.1
    exit
fi

declare tmpdir
tmpdir=$(mktemp -d)
declare CACHE=$tmpdir/fzf-search-file-cache-${UID}.txt

trap "rm -rf $tmpdir" EXIT INT TERM

# QUERY is optionally set externally: QUERY='foo bar' fzf-search
declare QUERY _PATHS=("$@")	# preserve spaces in path names
if [[ ! -t 0 ]]; then		# stdin not attached to a tty
    cat /dev/stdin > $CACHE
else
    if [[ $# -gt 0 ]]; then
	echo "${_PATHS[@]}" > $CACHE
    else
	rg --files > $CACHE
    fi
fi

if [[ -n $NOCOLOR ]]; then
    declare _COLOR=never
else
    declare _COLOR=always
fi

if [[ -n $NOBINARY ]]; then
    declare _NOBINARY=--no-binary
fi

# NOTE: fzf runs the command in a separate shell, can't use functions
declare RG="rg ${_NOBINARY} --column --line-number --no-heading --with-filename --color=${_COLOR} --smart-case"
declare RG_PIPE="cat $CACHE | xargs $RG"
declare FZF_DEFAULT_COMMAND="$RG_PIPE $QUERY || true"
declare FZF_DEFAULT_OPTS="--ansi --header-first --exact --multi"

declare VIEWER HEADER LESS_SCROLL="less +{2}g"
if [[ -f $(which bat 2> /dev/null) ]]; then
    HEADER='~4,'
    VIEWER="bat --style=full --color=always --paging=always -H {2} --pager '$LESS_SCROLL'"
else
    VIEWER="$LESS_SCROLL -N '+/{q}'"
fi

declare PARSE_LINES="cat {+f} | cut -d: -f1 | uniq"

fzf --prompt='? ' --query "$QUERY" --disabled --delimiter : \
    --header "« F1: help, C-s: recursive search, C-f: filter files, RET: view, M-RET: open »" \
    --bind "f1:execute(man -l $SRCDIR/help.1 || true)" \
    --preview "$VIEWER {1}" \
    --preview-window "border-left:${HEADER},+{2}-3" \
    --bind "enter:execute($VIEWER {1})" \
    --bind "alt-enter:execute($EDITOR +{2} {1})" \
    --bind "change:reload($RG_PIPE {q} || true)" \
    --bind "ctrl-s:select-all+execute($PARSE_LINES | fzf-search || true)+deselect-all" \
    --bind "ctrl-f:select-all+execute($PARSE_LINES | QUERY='{q}' fzf-file || true)+deselect-all"