install-ocemu.sh

#!/bin/bash
#
# Install Gamax92's OCEmu, as well as dependencies.

distro="unknown"

getDeps() {
    echo "-> Installing dependencies..."
    echo "-> Detecting distribution..."
    if [ -e "/usr/bin/apt" ]; then
        echo "-> You appear to be using Debian or a derivative"
        sudo apt install git make lua5.2 liblua5.2-dev libsdl2-dev subversion wget
        distro="debian"
    elif [ -e "/usr/bin/pacman" ]; then
        echo "-> You appear to be using Arch Linux or a derivative"
        sudo pacman -S lua52 lua52-filesystem lua52-sec lua52-socket wget
        distro="arch"
    elif [ -e "/usr/local/bin/brew" ]; then
        echo "-> You appear to be using macOS with Homebrew installed"
        brew install lua
        brew install sdl2
        brew install wget
        distro="darwin"
    else
        echo "-> Could not detect your distribution."
        exit -1
    fi
}

instLuarocks() {
    if [ "$distro" = "darwin" ]; then
        return 0
    fi
    echo "-> Downloading Luarocks..."
    mkdir -p "$HOME/.tmp"
    wget -c "https://luarocks.org/releases/luarocks-3.2.1.tar.gz" -O "$HOME/.tmp/luarocks.tar.gz"
    cd "$HOME/.tmp/"
    echo "-> Removing .tar.gz..."
    tar zxpf luarocks.tar.gz
    echo "-> Configuring Luarocks-5.2"
    cd "$HOME/.tmp/luarocks-3.2.1"
    "$HOME/.tmp/luarocks-3.2.1/configure" --lua-version=5.2 --lua-suffix=5.2 --versioned-rocks-dir
    echo "-> Building Luarocks..."
    make build
    echo "-> Installing Luarocks..."
    sudo make install
}

instLuaDeps() {
    echo "-> Installing most remaining dependencies with Luarocks..."
    sudo luarocks install luasec
    sudo luarocks install luasocket
    sudo luarocks install luafilesystem
    sudo luarocks install luautf8
    sudo ln -s /usr/local/lib/lua/5.2/ffi* /usr/lib/lua/5.2/
    sudo ln -s /usr/local/lib/lua/5.2/lua-utf8.so /usr/lib/lua/5.2/
}

echo "Installing dependencies..."
getDeps
instLuarocks
instLuaDeps
echo "Downloading OCEmu..."
git clone --recursive "https://github.com/gamax92/ocemu" "$HOME/.local/share/ocemu/"

echo "Building included luaffifb..."
cd "$HOME/.local/share/ocemu/luaffifb"
sudo luarocks make

cd ..

echo "Downloading OpenComputers' Lua source code..."

make

echo "Adding alias in ~/.bash_aliases"

echo "alias oc='cd ~/.ocemu/src/; lua5.2 boot.lua'" >> "$HOME/.bash_aliases"

echo "Done. Run 'oc' to launch the emulator."