xpl

#!/usr/bin/env bash
# @Function
# Open file in file explorer.
#
# @Usage
#   $ ./xpf [file [file ...] ]
#
# @online-doc https://github.com/oldratlee/useful-scripts/blob/dev-3.x/docs/shell.md#-xpl-and-xpf
# @author Jerry Lee (oldratlee at gmail dot com)
set -eEuo pipefail

readonly PROG=${0##*/}
readonly PROG_VERSION='3.x-dev'

################################################################################
# util functions
################################################################################

redPrint() {
  # if stdout is a terminal, turn on color output.
  #   '-t' check: is a terminal?
  #   check isatty in bash https://stackoverflow.com/questions/10022323
  if [ -t 1 ]; then
    printf '\e[1;31m%s\e[0m\n' "$*"
  else
    printf '%s\n' "$*"
  fi
}

die() {
  local prompt_help=false exit_status=2
  while (($# > 0)); do
    case "$1" in
    -h)
      prompt_help=true
      shift
      ;;
    -s)
      exit_status=$2
      shift 2
      ;;
    *)
      break
      ;;
    esac
  done

  (($# > 0)) && redPrint "$PROG: $*"
  $prompt_help && echo "Try '$PROG --help' for more information."

  exit "$exit_status"
} >&2

usage() {
  cat <<EOF
Usage: $PROG [OPTION] [FILE]...
Open file in file explorer.
Example: $PROG file.txt

Options:
    -s, --selected  select the file or dir
    -h, --help      display this help and exit
    -V, --version   display version information and exit
EOF

  exit
}

progVersion() {
  printf '%s\n' "$PROG $PROG_VERSION"
  exit
}

################################################################################
# parse options
################################################################################

files=()
selected=false
while (($# > 0)); do
  case "$1" in
  -s | --selected)
    selected=true
    shift
    ;;
  -h | --help)
    usage
    ;;
  -V | --version)
    progVersion
    ;;
  --)
    shift
    files=(${files[@]:+"${files[@]}"} "$@")
    break
    ;;
  -*)
    die -h "unrecognized option '$1'"
    ;;
  *)
    files=(${files[@]:+"${files[@]}"} "$1")
    shift
    ;;
  esac
done

# if files is empty, use one element "."
files=("${files[@]:-.}")

# if program name is xpf, set option selected!
[ "xpf" = "$PROG" ] && selected=true

readonly files selected

################################################################################
# biz logic
################################################################################

# open one file
openOneFile() {
  local file=$1 slt=$selected

  case "$(uname)" in
  Darwin*)
    [ -f "$file" ] && slt=true
    if $slt; then
      open -R "$file"
    else
      open "$file"
    fi
    ;;
  CYGWIN*)
    [ -f "$file" ] && slt=true
    if $slt; then
      explorer /select, "$(cygpath -w "$file")"
    else
      explorer "$(cygpath -w "$file")"
    fi
    ;;
  *)
    if [ -d "$file" ]; then
      nautilus "$(dirname -- "$file")"
    else
      if $slt; then
        nautilus "$file"
      else
        nautilus "$(dirname -- "$file")"
      fi
    fi
    ;;
  esac

  local selected_msg
  $slt && selected_msg='with selection'
  printf 'open %14s: %s\n' "$selected_msg" "$file"
}

has_error=false

for file in "${files[@]}"; do
  [ -e "$file" ] || {
    has_error=true
    redPrint "$PROG: $file: No such file or directory!" >&2
    continue
  }

  openOneFile "$file" || has_error=true
done

# set exit status
! $has_error