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] [-T] LN_ARGUMENT...
   7 Create symlinks conveniently and forcefully.
   8
   9 Remove existing file/links using trash-put or rm -rf if it is not available.
  10 Create directory if needed. Small change to ln argument semantics: for 2 arguments,
  11 the second argument is a directory unless -T is passed. This removes ambiguity of
  12 replacing a file but not a directory. No ln option arguments are supported."
  13
  14     if [[ $1 == --help || $# -eq 0 ]]; then
  15         echo "$help"
  16         return 0
  17     fi
  18
  19     local nodir=false
  20     if [[ $1 == -T ]]; then
  21         nodir=true
  22         shift
  23     fi
  24
  25
  26     local remove x
  27     if type -P dircolors >/dev/null; then
  28         remove=trash-put
  29     else
  30         remove="rm -rf"
  31     fi
  32
  33     if $nodir && [[ $# -eq 2 ]]; then
  34         if [[ -e "$2" || -L "$2" ]]; then
  35             $remove "$2"
  36         elif [[ ! -d "$2/.." ]]; then
  37             mkdir -p "$2/.."
  38         fi
  39     elif [[ $# -ge 2 ]]; then
  40         if [[ -d ${!#} ]]; then
  41             local oldcwd=$PWD
  42             cd ${!#} # last arg
  43             for x in "${@:1:$(($#-1))}"; do # all but last arg
  44                 # remove any trailing slashes
  45                 x="${x%%+(/)}"
  46                 # remove any leading directory components
  47                 x="${x##*/}"
  48                 [[ -e "$x" || -L "$x" ]] && $remove "$x"
  49             done
  50             cd "$oldcwd"
  51         else
  52             mkdir -p "${!#}"
  53         fi
  54     elif  [[ $# -eq 1 ]]; then
  55         [[ -e "${1##*/}" || -L "${1##*/}" ]] && $remove "${1##*/}"
  56     fi
  57     ln -s -- "$@"
  58 }
  59 lnf "$@"