#!/bin/bash set -e RELEASE="latest" OS="$(uname -s)" case "${OS}" in MINGW* | Win*) OS="Windows" ;; esac if [ -d "$HOME/.fnm" ]; then INSTALL_DIR="$HOME/.fnm" elif [ -n "$XDG_DATA_HOME" ]; then INSTALL_DIR="$XDG_DATA_HOME/fnm" elif [ "$OS" = "Darwin" ]; then INSTALL_DIR="$HOME/Library/Application Support/fnm" else INSTALL_DIR="$HOME/.local/share/fnm" fi # Parse Flags parse_args() { while [[ $# -gt 0 ]]; do key="$1" case $key in -d | --install-dir) INSTALL_DIR="$2" shift # past argument shift # past value ;; -s | --skip-shell) SKIP_SHELL="true" shift # past argument ;; --force-install | --force-no-brew) echo "\`--force-install\`: I hope you know what you're doing." >&2 FORCE_INSTALL="true" shift ;; -r | --release) RELEASE="$2" shift # past release argument shift # past release value ;; *) echo "Unrecognized argument $key" exit 1 ;; esac done } set_filename() { if [ "$OS" = "Linux" ]; then # Based on https://stackoverflow.com/a/45125525 case "$(uname -m)" in arm | armv7*) FILENAME="fnm-arm32" ;; aarch* | armv8*) FILENAME="fnm-arm64" ;; *) FILENAME="fnm-linux" esac elif [ "$OS" = "Darwin" ] && [ "$FORCE_INSTALL" = "true" ]; then FILENAME="fnm-macos" USE_HOMEBREW="false" echo "Downloading the latest fnm binary from GitHub..." echo " Pro tip: it's easier to use Homebrew for managing fnm in macOS." echo " Remove the \`--force-no-brew\` so it will be easy to upgrade." elif [ "$OS" = "Darwin" ]; then USE_HOMEBREW="true" echo "Downloading fnm using Homebrew..." elif [ "$OS" = "Windows" ] ; then FILENAME="fnm-windows" echo "Downloading the latest fnm binary from GitHub..." else echo "OS $OS is not supported." echo "If you think that's a bug - please file an issue to https://github.com/Schniz/fnm/issues" exit 1 fi } download_fnm() { if [ "$USE_HOMEBREW" = "true" ]; then brew install fnm else if [ "$RELEASE" = "latest" ]; then URL="https://github.com/Schniz/fnm/releases/latest/download/$FILENAME.zip" else URL="https://github.com/Schniz/fnm/releases/download/$RELEASE/$FILENAME.zip" fi DOWNLOAD_DIR=$(mktemp -d) echo "Downloading $URL..." mkdir -p "$INSTALL_DIR" &>/dev/null if ! curl --progress-bar --fail -L "$URL" -o "$DOWNLOAD_DIR/$FILENAME.zip"; then echo "Download failed. Check that the release/filename are correct." exit 1 fi unzip -q "$DOWNLOAD_DIR/$FILENAME.zip" -d "$DOWNLOAD_DIR" if [ -f "$DOWNLOAD_DIR/fnm" ]; then mv "$DOWNLOAD_DIR/fnm" "$INSTALL_DIR/fnm" else mv "$DOWNLOAD_DIR/$FILENAME/fnm" "$INSTALL_DIR/fnm" fi chmod u+x "$INSTALL_DIR/fnm" fi } check_dependencies() { echo "Checking dependencies for the installation script..." echo -n "Checking availability of curl... " if hash curl 2>/dev/null; then echo "OK!" else echo "Missing!" SHOULD_EXIT="true" fi echo -n "Checking availability of unzip... " if hash unzip 2>/dev/null; then echo "OK!" else echo "Missing!" SHOULD_EXIT="true" fi if [ "$USE_HOMEBREW" = "true" ]; then echo -n "Checking availability of Homebrew (brew)... " if hash brew 2>/dev/null; then echo "OK!" else echo "Missing!" SHOULD_EXIT="true" fi fi if [ "$SHOULD_EXIT" = "true" ]; then echo "Not installing fnm due to missing dependencies." exit 1 fi } ensure_containing_dir_exists() { local CONTAINING_DIR CONTAINING_DIR="$(dirname "$1")" if [ ! -d "$CONTAINING_DIR" ]; then echo " >> Creating directory $CONTAINING_DIR" mkdir -p "$CONTAINING_DIR" fi } setup_shell() { CURRENT_SHELL="$(basename "$SHELL")" if [ "$CURRENT_SHELL" = "zsh" ]; then CONF_FILE=${ZDOTDIR:-$HOME}/.zshrc ensure_containing_dir_exists "$CONF_FILE" echo "Installing for Zsh. Appending the following to $CONF_FILE:" { echo '' echo '# fnm' echo 'FNM_PATH="'"$INSTALL_DIR"'"' echo 'if [ -d "$FNM_PATH" ]; then' echo ' export PATH="'$INSTALL_DIR':$PATH"' echo ' eval "`fnm env`"' echo 'fi' } | tee -a "$CONF_FILE" elif [ "$CURRENT_SHELL" = "fish" ]; then CONF_FILE=$HOME/.config/fish/conf.d/fnm.fish ensure_containing_dir_exists "$CONF_FILE" echo "Installing for Fish. Appending the following to $CONF_FILE:" { echo '' echo '# fnm' echo 'set FNM_PATH "'"$INSTALL_DIR"'"' echo 'if [ -d "$FNM_PATH" ]' echo ' set PATH "$FNM_PATH" $PATH' echo ' fnm env | source' echo 'end' } | tee -a "$CONF_FILE" elif [ "$CURRENT_SHELL" = "bash" ]; then if [ "$OS" = "Darwin" ]; then CONF_FILE=$HOME/.profile else CONF_FILE=$HOME/.bashrc fi ensure_containing_dir_exists "$CONF_FILE" echo "Installing for Bash. Appending the following to $CONF_FILE:" { echo '' echo '# fnm' echo 'FNM_PATH="'"$INSTALL_DIR"'"' echo 'if [ -d "$FNM_PATH" ]; then' echo ' export PATH="$FNM_PATH:$PATH"' echo ' eval "`fnm env`"' echo 'fi' } | tee -a "$CONF_FILE" else echo "Could not infer shell type. Please set up manually." exit 1 fi echo "" echo "In order to apply the changes, open a new terminal or run the following command:" echo "" echo " source $CONF_FILE" } parse_args "$@" set_filename check_dependencies download_fnm if [ "$SKIP_SHELL" != "true" ]; then setup_shell fi