zsh/install.zsh

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#!/usr/bin/env zsh
error() {
echo "error: $*"
exit 1
}
directories=(
~/.cache/zsh
~/.local/bin
~/.local/share/zsh/plugins
~/.local/share/zsh/site-functions
)
for directory in $directories; do
mkdir -p $directory
done
plugins=(
zsh-users/zsh-autosuggestions
zsh-users/zsh-history-substring-search
zsh-users/zsh-syntax-highlighting
zsh-users/zsh-completions
)
for plugin in $plugins; do
plugin_name=${plugin/*\//}
plugin_directory=~/.local/share/zsh/plugins/$plugin_name
if [ -d $plugin_directory ]; then
if ! git -C $plugin_directory diff-index --quiet HEAD --; then
error $plugin_directory contains unstaged changes
fi
pull=`git -C $plugin_directory pull`
if [ "$pull" != "Already up to date." ] && \
[ "$pull" != "Already up-to-date." ]; then
echo changed pulled $plugin_directory
fi
else
git clone https://github.com/$plugin.git $plugin_directory > /dev/null
echo changed cloned $plugin_directory
fi
old_plugin_directory=~/.config/zsh/$plugin_name
if [ -d $old_plugin_directory ]; then
rm -rf $old_plugin_directory
echo changed removed $old_plugin_directory
fi
done
declare -A symlinks
symlinks=(
~/.config/zsh/zlogin ~/.zlogin
~/.config/zsh/zlogout ~/.zlogout
~/.config/zsh/zprofile ~/.zprofile
~/.config/zsh/zshenv ~/.zshenv
~/.config/zsh/zshrc ~/.zshrc
~/.config/zsh/prompt_fresh_setup
~/.local/share/zsh/site-functions/prompt_fresh_setup
~/.config/zsh/cmake-uninstall ~/.local/bin/cmake-uninstall
~/.config/zsh/$ ~/.local/bin/$
~/.config/zsh/url/url ~/.local/bin/url
)
for completion in ~/.config/zsh/**/_*; do
filename=`basename $completion`
symlinks[$completion]=~/.local/share/zsh/site-functions/$filename
done
completions=( ~/.local/share/zsh/plugins/zsh-completions/src/* )
for completion in $completions; do
filename=`basename $completion`
name=${filename:1}
if command -v $name > /dev/null; then
symlinks[$completion]=~/.local/share/zsh/site-functions/$filename
fi
done
for source in ${(k)symlinks}; do
dest=$symlinks[$source]
if [ -L $dest ]; then
target=`readlink $dest`
if [ "$target" != "$source" ]; then
rm $dest
ln -s $source $dest
echo changed replace incorrect symlink $dest
fi
elif [ -f $dest ]; then
error symlink failed $dest exists but is a regular file
else
ln -s $source $dest
echo changed created symlink $dest
fi
done