#
# Their setup.sh script sources this file.
+# Copyright (C) 2009-2013 Simon Ruderich
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
# csh gives the error "Unknown colorls variable `su'." when used with newer
# options supported by Zsh or GNU ls.
unset LS_COLORS
-# Check if the given program is installed. Returns 0 if it exists, 1
-# otherwise; so it can be used in if.
+# Check if the given program is installed. `type` is portable, `which` is not.
installed() {
- which $1 2>&1 | perl -ne 'if (not m{^/}) { exit 1 }'
+ type "$1" >/dev/null 2>&1
}
# Print the current OS. The following OS are supported at the moment:
# - Gentoo (gentoo)
# - Mac OS X (darwin)
# - Solaris/OpenSolaris (sun)
+# - FreeBSD (freebsd)
# If an unsupported OS is used an error is printed.
os() {
if [ -f /etc/debian_version ]; then
echo darwin
elif [ x`uname` = xSunOS ]; then
echo sun
+ elif [ x`uname` = xFreeBSD ]; then
+ echo freebsd
else
echo unsupported OS! >&2
return 1
link() {
# Get all necessary paths.
pwd=`pwd`
- base=`dirname "$2"`
+ base=`echo "$2" | sed "s|\~|$HOME|"` # expand ~, some sh don't do it
+ base=`dirname "$base"`
source=`echo "$pwd/$1" | sed "s|$base/||"`
target=`basename "$2"`
# Abort if the target file exists and is no symbolic link. Prevents
# overwriting real files.
- if [ -e "$target" -a ! -h "$target" ]; then
+ if [ \( -f "$target" -a ! -h "$target" \) -o \
+ \( -s "$target" -a ! -h "$target" \) ]; then
echo "link(): target '$target' exists already and is no symbolic link!" >&2
exit 1
fi
- # Make sure the source exists.
- if [ ! -e "$source" ]; then
+ # Make sure the source exists (is file, directory or link).
+ if [ ! -f "$source" -a ! -d "$source" -a ! -h "$source" ]; then
echo "link(): source '$source' doesn't exist!" >&2
exit 1
fi