file_selector

#!/usr/bin/env bash

. sentaku -n

SENTAKU_FILE_CONTNT_LINE=10

_sf_file_content () {
  if [ $_s_file_content -eq 0 ];then
    return
  fi
  for i in $(seq $_s_lines $(($(tput lines))));do
    tput cup "$i" 0 >/dev/tty
    printf "%-${_s_cols}s" "" >/dev/tty
  done
  tput cup "$_s_lines" 0 >/dev/tty
  echo "====File content===="
  if [ -f ${_s_inputs[$_s_current_n]} ];then
    head -n $SENTAKU_FILE_CONTNT_LINE ${_s_inputs[$_s_current_n]} >/dev/tty
  else
    echo "${_s_inputs[$_s_current_n]} is not a file" >/dev/tty
  fi
}

_sf_printall () { # usage: _sf_printall [not force] {{{
  # if any argument is given, check if echoed or not.
  if [ $# -ge 1 ] && [ $_s_is_print -eq 0 ];then
    return
  fi

  local lines=$_s_lines
  local cols=$_s_cols
  _s_lines=$(tput lines)
  if [ $((_s_lines-SENTAKU_FILE_CONTNT_LINE-10)) -ge 0 ];then
    _s_lines=$((_s_lines-SENTAKU_FILE_CONTNT_LINE-2))
    _s_file_content=1
  else
    _s_file_content=0
  fi
  _s_cols=$(tput cols)

  _sf_setview

  if [ "$lines" -ne "$_s_lines" ] || [ "$cols" -ne "$_s_cols" ];then
    _s_current_n=0
    _s_n_offset=0
  fi

  clear >/dev/tty

  # Header
  _sf_print "${_s_header}\n"

  local i
  for i in $(seq 0 $((_s_max_show-1)));do
    if [ $((i+_s_n_offset)) -ge "$_s_n" ];then break;fi
    if [ $((i+_s_n_offset)) -eq $_s_current_n ];then
      _sf_printline 1 $((i+_s_ext_row)) $((i+_s_n_offset))
    else
      _sf_printline 0 $((i+_s_ext_row)) $((i+_s_n_offset))
    fi
  done

  _s_is_print=0
} # }}}

_sf_printline () { # useage: _sf_printline is_selected n_line n_input {{{
  if [ $# -lt 3 ];then
    _sf_echo "_sf_printline needs 3 arguments (is_selected, n_line, n_input), exit\n"
    _sf_quit 1
    return
  fi
  local is_selected=$1
  local n_line=$2
  local n_input=$3

  local color=""
  if [ ${_s_v_selected[$n_input]} -eq 1 ];then
    color="x27[36m"
  fi
  if [ "$is_selected" -eq 1 ];then
    if [ "$_s_line_highlight" -eq 1 ];then
      color="${color}x27[7m"
    else
      color="${color}x27[4m"
    fi
  fi

  # Change line breaks to \n (to be shown), remove the last line break, replace tab to space
  _s_show="$(echo "${_s_inputs[$n_input]}"|awk -F"\n" -v ORS="\\\\\\\\n" '{print}' |sed 's|\\\\n$||'|sed "s/x27\[m/x27[m$color/g"|sed $'s/\t/ /g')"

  tput cup "$n_line" 0 >/dev/tty
  local n_show=$_s_cols
  local num=""
  if [ $_s_nonumber -eq 0 ];then
    local nmax=$((_s_n-1))
    local num_width=${#nmax}
    n_show=$((_s_cols-num_width-2))
    num=$(printf "%${num_width}d: " "$n_input")
  fi
  _sf_show "$is_selected" "$n_show"
  if [ "$_s_col_n_only" -eq 1 ];then
    printf "${color}${num}x27[m${_s_show}" >/dev/tty
  else
    printf "${color}${num}${_s_show}x27[m" >/dev/tty
  fi
  if [ $is_selected ];then
    _sf_file_content
  fi
  tput cup "$n_line" 0 >/dev/tty
} # }}}

_sf_s () {
  output="$(_sf_nth $((_s_current_n))) value: ${_s_inputs[$_s_current_n]}
===============
"
  if [ -f ${_s_inputs[$_s_current_n]} ];then
    output="$output$(head -n $(($(tput lines)-2)) ${_s_inputs[$_s_current_n]})"
  else
    output="$output${_s_inputs[$_s_current_n]} is not a file\n"
  fi
  _sf_echo "$output"
}

if [ -p /dev/stdin ];then
  echo $(cat -) | _sf_main "$@"
else
  _sf_main "$@"
fi