iankelling.org Git - lnf/blob - lnf

   1 #!/bin/bash
   2 # Copyright (C) 2014 Ian Kelling
   3 # This program is under GPL v. 3 or later, see <http://www.gnu.org/licenses/>
   4
   5 lnf() {
   6     local help="lnf [--help] LN_ARGUMENTS...
   7 Create symlinks conveniently and forcefully.
   8 Remove existing file/links using trash-put or rm -rf if it is not available.
   9 Create directory if needed. Small change to ln argument semantics: for 2 arguments,
  10 the second is the link, never a directory to put the link in.
  11 LN_ARGUMENTS are passed to ln -s --, meaning no ln option arguments are supported."
  12     if [[ $1 == --help ]]; then
  13         echo "$help"
  14         return 0
  15     fi
  16
  17     local remove x
  18     if type -P dircolors >/dev/null; then
  19         remove=trash-put
  20     else
  21         remove="rm -rf"
  22     fi
  23
  24     if [[ $# -ge 3 ]]; then
  25         if [[ -d ${!#} ]]; then
  26             local oldcwd=$PWD
  27             cd ${!#} # last arg
  28             for x in "${@:1:$(($#-1))}"; do # all but last arg
  29                 # remove any trailing slashes
  30                 x="${x%%+(/)}"
  31                 # remove any leading directory components
  32                 x="${x##*/}"
  33                 [[ -e "$x" || -L "$x" ]] && $remove "$x"
  34             done
  35             cd "$oldcwd"
  36         else
  37             mkdir -p "${!#}"
  38         fi
  39     elif [[ $# -eq 2 ]]; then
  40         if [[ -e "$2" || -L "$2" ]]; then
  41             $remove "$2"
  42         elif [[ ! -d "$2/.." ]]; then
  43             mkdir -p "$2/.."
  44         fi
  45     elif  [[ $# -eq 1 ]]; then
  46         [[ -e "${1##*/}" || -L "${1##*/}" ]] && $remove "${1##*/}"
  47     fi
  48     ln -s -- "$@"
  49 }
  50 lnf "$@"