iankelling.org Git - small-misc-bash/blob - rmln

   1 #!/bin/bash
   2 # Copyright (C) 2016 Ian Kelling
   3
   4 # Licensed under the Apache License, Version 2.0 (the "License");
   5 # you may not use this file except in compliance with the License.
   6 # You may obtain a copy of the License at
   7
   8 #     http://www.apache.org/licenses/LICENSE-2.0
   9
  10 # Unless required by applicable law or agreed to in writing, software
  11 # distributed under the License is distributed on an "AS IS" BASIS,
  12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13 # See the License for the specific language governing permissions and
  14 # limitations under the License.
  15
  16 rmln () {
  17     local help="Usage: rmln [RM_OPTION]... FILE...
  18 wrap rm, expanding symlink arguments
  19
  20 Symlink arguments are recursively expanded so the links and the targets
  21 are removed.  All arguments to rm work.
  22
  23 rm's --help:
  24 "
  25     local file targets
  26
  27     # simple but correct counting past gnu rm options
  28     local -i index=1
  29     local options=true
  30     local helped=false # only print our help once
  31     while $options; do
  32         if [[ "${@:index:1}" == -* ]]; then
  33             if [[ "${@:index:1}" == --help ]] && ! $helped; then
  34                 echo "$help"
  35                 helped=true
  36             fi
  37             if [[ "${@:index:1}" == -- ]]; then
  38                 options=false
  39             fi
  40             index+=1
  41         else
  42             options=false
  43         fi
  44     done
  45
  46     for file in "${@:index}"; do
  47         [[ -L "$file" ]] && _rmln_recurse "$file"
  48     done
  49     rm "$@" "${targets[@]}"
  50 }
  51
  52 _rmln_recurse() {
  53     local x="$( readlink "$1" )"
  54     targets+=( "$x" )
  55     [[ -L $x ]] && _rmln_recurse "$x"
  56 }
  57 rmln "$@"