-#!/bin/bash
-# Copyright (C) 2014 Ian Kelling
-# This program is under GPL v. 3 or later, see <http://www.gnu.org/licenses/>
-
-lnf() {
- local help="lnf - Create symlinks conveniently and forcefully.
-Usage:
- lnf -T TARGET LINK_NAME (1st form)
- lnf TARGET (2nd form)
- lnf TARGET... DIRECTORY (3rd form)
-
-Remove existing file in the using trash-put or rm -rf if it is not available.
-Create directory if needed. Slightly more restrictive arguments than ln.
-
-In the 1st form, create a link to TARGET with the name LINK_NAME. In the 2nd
-form, create a link to TARGET in the current directory. In the 3rd form, create
-links to each TARGET in DIRECTORY."
-
- if [[ $1 == --help || $# -eq 0 ]]; then
- echo "$help"
- return 0
- fi
-
- local nodir
- if [[ $1 == -T ]]; then
- nodir=-T
- shift
- if (( $# != 2 )); then
- echo "lnf error: expected 2 arguments with -T flag. Got $#"
- return 1
- fi
- fi
-
- local reset_extglob=false
- ! shopt extglob >/dev/null && reset_extglob=true
- shopt -s extglob
-
-
- local remove x
- if type -P trash-put >/dev/null; then
- remove=trash-put
- else
- remove="rm -rf"
- fi
-
- if [[ $nodir ]]; then
- if [[ -e "$2" || -L "$2" ]]; then
- $remove "$2"
- elif ! mkdir -p "$(dirname "$2")"; then
- echo "lnf error: failed to make directory $(dirname "$2")"
- return 1
- fi
- elif (( $# >= 2 )); then
- if [[ -d ${!#} ]]; then
- local oldcwd=$PWD
- cd "${!#}" # last arg
- for x in "${@:1:$(( $# - 1 ))}"; do # all but last arg
- # remove any trailing slashes, uses extglob
- x="${x%%+(/)}"
- # remove any leading directory components
- x="${x##*/}"
- [[ -e "$x" || -L "$x" ]] && $remove "$x"
- done
- cd "$oldcwd"
- else
- if ! mkdir -p "${!#}"; then
- echo "lnf error: failed to make directory ${!#}"
- return 1
- fi
- fi
- elif [[ $# -eq 1 ]]; then
- [[ -e "${1##*/}" || -L "${1##*/}" ]] && $remove "${1##*/}"
- fi
-
- $reset_extglob && shopt -u extglob
- ln -s $nodir -- "$@"
-}