-The main documentation is availiable via --help and near the top of any bash
-script files which sit next to this file.
+The main documentation is availiable via --help and near the top of the bash
+script file which sit next to this file.
-Files ending in -function are for sourcing then calling as a function. Files
-without -function are exactly the same except they are for calling as a script.
+The script file can be stripped of the last line and used as a function
+instead of a script.
-Patches, bugs, and any feedback is very welcome via gitorious or email to
+Patches, bugs, and any feedback is very welcome via email to
Ian Kelling <ian@iankelling.org>.
-
-This program is also part of a collection of programs,
-https://gitorious.org/bash-programs-by-ian, which are unrelated except
-having the same author and being being bash programs.
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.
+Remove existing file in the using trash-put or rm -rf if it is not available,
+or trash-put fails due to a cross-filesystem link.
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
shopt -s extglob
- local remove x
- if type -P trash-put >/dev/null; then
- remove=trash-put
- else
- remove="rm -rf"
- fi
+ local x ret prefix dir to_remove
+ to_remove=()
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 "$2")"
- return 1
+ dir="$(dirname "$2")"
+ if [[ -e $2 || -L $2 ]]; then
+ to_remove+=("$2")
+ elif [[ ! -d $dir ]]; then
+ if [[ -e $dir || -L $dir ]]; then
+ to_remove+=("$dir")
+ fi
+ if ! mkdir -p "$(dirname "$2")"; then
+ echo "lnf error: failed to make directory $(dirname "$2")"
+ return 1
+ fi
fi
elif (( $# >= 2 )); then
if [[ -d ${!#} ]]; then
- local oldcwd=$PWD
- cd "${!#}" # last arg
+ prefix="${!#}/" # last arg
for x in "${@:1:$(( $# - 1 ))}"; do # all but last arg
- # remove any trailing slashes, uses extglob
+ # Remove 1 or more trailing slashes, using.
x="${x%%+(/)}"
- # remove any leading directory components
- x="${x##*/}"
- [[ -e "$x" || -L "$x" ]] && $remove "$x"
+ # remove any leading directory components, add prefix
+ x="$prefix/${x##*/}"
+ [[ -e "$x" || -L "$x" ]] && to_remove+=("$x")
done
- cd "$oldcwd"
else
if ! mkdir -p "${!#}"; then
echo "lnf error: failed to make directory ${!#}"
fi
fi
elif [[ $# -eq 1 ]]; then
- [[ -e "${1##*/}" || -L "${1##*/}" ]] && $remove "${1##*/}"
+ [[ -e "${1##*/}" || -L "${1##*/}" ]] && to_remove+=("${1##*/}")
+ fi
+ if (( ${#to_remove[@]} >= 1 )); then
+ if type -P trash-put >/dev/null; then
+ trash-put -- "${to_remove[@]}" || ret=$?
+ # trash-put will fail to trash a link that goes across filesystems (72),
+ # and for empty files (74)
+ # so revert to rm -rf in that case
+ if [[ $ret == 72 ]]; then
+ echo "$0: using rm -rf to overcome cross filesystem trash-put limitation"
+ rm -rf -- "${to_remove[@]}"
+ elif [[ $ret == 74 ]]; then
+ echo "$0: using rm -rf to overcome empty file/dir trash-put limitation"
+ rm -rf -- "${to_remove[@]}"
+ elif [[ $ret && $ret != 0 ]]; then
+ return $x
+ fi
+ else
+ rm -rf -- "${to_remove[@]}"
+ fi
fi
$reset_extglob && shopt -u extglob
+++ /dev/null
-#!/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 $nodir -- "$@"
-}
done
}
-source ${0%/*}/../lnf-function
+PATH="$(readlink -f ${0%/*}/..):$PATH"
+
# might want to undo this if things go wrong
# set -x
set -E;
trap 'echo "${BASH_COMMAND:+BASH_COMMAND=\"$BASH_COMMAND\" }
${FUNCNAME:+FUNCNAME=\"$FUNCNAME\" }${LINENO:+LINENO=\"$LINENO\" }\$?=$?"' ERR
-cd $(mktemp -d)
+tempdir=$(mktemp -d)
+cd $tempdir
docases
# test again, using rm -rf in place of trash-put.
-# assumes that rm is in /bin and trash-put is in /usr/bin
-PATH="${PATH//:\/usr\/bin}"
-PATH="${PATH//\/usr\/bin:}"
+trash-put() { rm -rf -- "$@"; }
+export -f trash-put
docases
+rm -rf $tempdir
echo tests concluded
iankelling.org / git / lnf / commitdiff