zwshinst.sh

#!/bin/sh
set -e

if [ $UID != 0 ]; then
    echo "Please run this script with sudo." 1>&2
    exit 1
fi

if [ -z "$SUDO_USER" ]; then
	echo "Error: The script must be run using sudo." 1>&2
	exit 1
fi

# tests for compatiblity with older versions...
#
# zsh -c "autoload -U is-at-least && is-at-least 5.5-1"
# if [ $? -ne 0 ] # 0 => OK, 1 => problem
# then
#     echo "Error: Version of zsh is too old." 1>&2
#    exit 1
# fi

homedir=$(getent passwd $SUDO_USER | cut -d: -f6)
basedir=$(dirname $0)
tmp="$basedir/*.zsh"
instdir="/opt/zwsh"
files=$(echo $tmp)
if [[ ! -d "$instdir" ]]; then
	if [[ -n "$1" ]]; then
		echo "Cannot update, no installation found." 1>&2
		exit 1
	else
        mkdir -pv "$instdir"
    fi
fi

cp -v $files "$instdir"
chmod -R +r "$instdir"

if [ -z "$1" ]; then
	if [ -f "$homedir/.zshrc" ]; then
    	cp "$homedir/.zshrc" "$homedir/.zshrc.bak"
	fi
	cp .zshrc "$homedir"

    # set project directory of zw in .zshrc
fi

sed -i -e "s|^.*%proj%$|    export ZWSHDIR=$(pwd) #%proj%|" "$homedir/.zshrc"

for f in "$homedir/".zshrc{,.bak}; do
	if [ -f "$f" ]; then
		chown $SUDO_USER "$f"
	fi
done