Files
newt/get-newt.sh
2026-04-16 21:47:48 -07:00

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#!/bin/sh
# Get Newt - Cross-platform installation script
# Usage: curl -fsSL https://raw.githubusercontent.com/fosrl/newt/refs/heads/main/get-newt.sh | sh
set -e
# Colors for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m' # No Color
# GitHub repository info
REPO="fosrl/newt"
GITHUB_API_URL="https://api.github.com/repos/${REPO}/releases/latest"
# Function to print colored output
print_status() {
printf '%b[INFO]%b %s\n' "${GREEN}" "${NC}" "$1"
}
print_warning() {
printf '%b[WARN]%b %s\n' "${YELLOW}" "${NC}" "$1"
}
print_error() {
printf '%b[ERROR]%b %s\n' "${RED}" "${NC}" "$1"
}
# Function to get latest version from GitHub API
get_latest_version() {
latest_info=""
if command -v curl >/dev/null 2>&1; then
latest_info=$(curl -fsSL "$GITHUB_API_URL" 2>/dev/null)
elif command -v wget >/dev/null 2>&1; then
latest_info=$(wget -qO- "$GITHUB_API_URL" 2>/dev/null)
else
print_error "Neither curl nor wget is available."
exit 1
fi
if [ -z "$latest_info" ]; then
print_error "Failed to fetch latest version info"
exit 1
fi
version=$(printf '%s' "$latest_info" | grep '"tag_name"' | head -1 | sed 's/.*"tag_name": *"\([^"]*\)".*/\1/')
if [ -z "$version" ]; then
print_error "Could not parse version from GitHub API response"
exit 1
fi
version=$(printf '%s' "$version" | sed 's/^v//')
printf '%s' "$version"
}
# Detect OS and architecture
detect_platform() {
os=""
arch=""
case "$(uname -s)" in
Linux*) os="linux" ;;
Darwin*) os="darwin" ;;
MINGW*|MSYS*|CYGWIN*) os="windows" ;;
FreeBSD*) os="freebsd" ;;
*)
print_error "Unsupported operating system: $(uname -s)"
exit 1
;;
esac
case "$(uname -m)" in
x86_64|amd64) arch="amd64" ;;
arm64|aarch64) arch="arm64" ;;
armv7l|armv6l)
if [ "$os" = "linux" ]; then
if [ "$(uname -m)" = "armv6l" ]; then
arch="arm32v6"
else
arch="arm32"
fi
else
arch="arm64"
fi
;;
riscv64)
if [ "$os" = "linux" ]; then
arch="riscv64"
else
print_error "RISC-V architecture only supported on Linux"
exit 1
fi
;;
*)
print_error "Unsupported architecture: $(uname -m)"
exit 1
;;
esac
printf '%s_%s' "$os" "$arch"
}
# Determine installation directory (default fallback)
get_install_dir() {
case "$PLATFORM" in
*windows*)
echo "$HOME/bin"
;;
*)
echo "/usr/local/bin"
;;
esac
}
# Parse --path argument from args
# Returns the value after --path, or empty string if not provided
parse_path_arg() {
while [ $# -gt 0 ]; do
case "$1" in
--path)
if [ -n "$2" ]; then
printf '%s' "$2"
return
fi
;;
--path=*)
printf '%s' "${1#--path=}"
return
;;
esac
shift
done
}
# Detect an existing newt binary location.
# Tries unprivileged which first, then sudo which (for binaries only visible to root).
# Returns the full path of the binary, or empty string if not found.
detect_existing_binary() {
existing=""
# Try unprivileged which first
existing=$(command -v newt 2>/dev/null || true)
if [ -n "$existing" ]; then
printf '%s' "$existing"
return
fi
# Try sudo which — some installations land in paths only root can see in $PATH
if command -v sudo >/dev/null 2>&1; then
existing=$(sudo which newt 2>/dev/null || true)
if [ -n "$existing" ]; then
printf '%s' "$existing"
return
fi
fi
}
# Check if we need sudo for installation
needs_sudo() {
install_dir="$1"
if [ -w "$install_dir" ] 2>/dev/null; then
return 1 # No sudo needed
else
return 0 # Sudo needed
fi
}
# Get the appropriate command prefix (sudo or empty)
get_sudo_cmd() {
install_dir="$1"
if needs_sudo "$install_dir"; then
if command -v sudo >/dev/null 2>&1; then
echo "sudo"
else
print_error "Cannot write to ${install_dir} and sudo is not available."
print_error "Please run this script as root or install sudo."
exit 1
fi
else
echo ""
fi
}
# Download and install newt
install_newt() {
platform="$1"
install_dir="$2"
sudo_cmd="$3"
custom_path="$4"
binary_name="newt_${platform}"
final_name="newt"
case "$platform" in
*windows*)
binary_name="${binary_name}.exe"
final_name="newt.exe"
;;
esac
download_url="${BASE_URL}/${binary_name}"
temp_file="/tmp/${final_name}"
# If a custom path is provided, use it directly; otherwise use install_dir/final_name
if [ -n "$custom_path" ]; then
final_path="$custom_path"
install_dir=$(dirname "$final_path")
else
final_path="${install_dir}/${final_name}"
fi
print_status "Downloading newt from ${download_url}"
if command -v curl >/dev/null 2>&1; then
curl -fsSL "$download_url" -o "$temp_file"
elif command -v wget >/dev/null 2>&1; then
wget -q "$download_url" -O "$temp_file"
else
print_error "Neither curl nor wget is available."
exit 1
fi
# Make executable before moving
chmod +x "$temp_file"
# Create install directory if it doesn't exist and move binary
if [ -n "$sudo_cmd" ]; then
$sudo_cmd mkdir -p "$install_dir"
print_status "Using sudo to install to ${install_dir}"
$sudo_cmd mv "$temp_file" "$final_path"
else
mkdir -p "$install_dir"
mv "$temp_file" "$final_path"
fi
print_status "newt installed to ${final_path}"
# Check if install directory is in PATH
if ! echo "$PATH" | grep -q "$install_dir"; then
print_warning "Install directory ${install_dir} is not in your PATH."
print_warning "Add it with:"
print_warning " export PATH=\"${install_dir}:\$PATH\""
fi
}
# Verify installation
verify_installation() {
install_dir="$1"
exe_suffix=""
case "$PLATFORM" in
*windows*) exe_suffix=".exe" ;;
esac
newt_path="${install_dir}/newt${exe_suffix}"
if [ -x "$newt_path" ]; then
print_status "Installation successful!"
print_status "newt version: $("$newt_path" --version 2>/dev/null || printf 'unknown')"
return 0
else
print_error "Installation failed. Binary not found or not executable."
return 1
fi
}
# Main installation process
main() {
# --path explicitly overrides everything
CUSTOM_PATH=$(parse_path_arg "$@")
if [ -n "$CUSTOM_PATH" ]; then
print_status "Installing latest version of newt to ${CUSTOM_PATH} (--path override)..."
else
print_status "Installing latest version of newt..."
fi
print_status "Fetching latest version..."
VERSION=$(get_latest_version)
print_status "Latest version: v${VERSION}"
BASE_URL="https://github.com/${REPO}/releases/download/${VERSION}"
PLATFORM=$(detect_platform)
print_status "Detected platform: ${PLATFORM}"
if [ -n "$CUSTOM_PATH" ]; then
# --path wins; derive INSTALL_DIR from it
INSTALL_DIR=$(dirname "$CUSTOM_PATH")
else
# Try to find an existing installation so we update the right place
EXISTING_BINARY=$(detect_existing_binary)
if [ -n "$EXISTING_BINARY" ]; then
print_status "Found existing newt binary at ${EXISTING_BINARY}"
CUSTOM_PATH="$EXISTING_BINARY"
INSTALL_DIR=$(dirname "$EXISTING_BINARY")
print_status "Will update existing installation at ${INSTALL_DIR}"
else
INSTALL_DIR=$(get_install_dir)
fi
fi
print_status "Install directory: ${INSTALL_DIR}"
# Check if we need sudo
SUDO_CMD=$(get_sudo_cmd "$INSTALL_DIR")
if [ -n "$SUDO_CMD" ]; then
print_status "Root privileges required for installation to ${INSTALL_DIR}"
fi
install_newt "$PLATFORM" "$INSTALL_DIR" "$SUDO_CMD" "$CUSTOM_PATH"
if [ -n "$CUSTOM_PATH" ]; then
if [ -x "$CUSTOM_PATH" ]; then
print_status "Installation successful!"
print_status "newt version: $("$CUSTOM_PATH" --version 2>/dev/null || printf 'unknown')"
print_status "newt is ready to use!"
else
print_error "Installation failed. Binary not found or not executable at ${CUSTOM_PATH}."
exit 1
fi
elif verify_installation "$INSTALL_DIR"; then
print_status "newt is ready to use!"
print_status "Run 'newt --help' to get started."
else
exit 1
fi
}
# Run main function
main "$@"