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#!/usr/bin/env bash
set -eu pipefall
declare -r LV_INSTALL_PREFIX="${INSTALL_PREFIX:-"$HOME/.local"}"
declare -r RELEASE_VER="${RELEASE_VER:-latest}" # can be set to nightly
declare ARCHIVE_NAME
declare RELEASE_NAME
declare OS
OS="$(uname -s)"
if [ "$OS" == "Linux" ]; then
ARCHIVE_NAME="nvim-linux64"
RELEASE_NAME="nvim-linux64"
elif [ "$OS" == "Darwin" ]; then
ARCHIVE_NAME="nvim-macos"
# for some reason the archive has a different name
RELEASE_NAME="nvim-osx64"
else
echo "$OS platform is not supported currently"
exit 1
fi
if [[ "${RELEASE_VER}" == "latest" ]]; then
declare -r RELEASE_URL="https://github.com/neovim/neovim/releases/${RELEASE_VER}/download/${ARCHIVE_NAME}.tar.gz"
else
declare -r RELEASE_URL="https://github.com/neovim/neovim/releases/download/${RELEASE_VER}/${ARCHIVE_NAME}.tar.gz"
fi
declare -r CHECKSUM_URL="$RELEASE_URL.sha256sum"
DOWNLOAD_DIR="$(mktemp -d)"
readonly DOWNLOAD_DIR
RELEASE_SHA="$(curl -Ls "$CHECKSUM_URL" | awk '{print $1}')"
readonly RELEASE_SHA
function main() {
if [ ! -d "$LV_INSTALL_PREFIX" ]; then
mkdir -p "$LV_INSTALL_PREFIX" || __invalid__prefix__handler
fi
download_neovim
verify_neovim
install_neovim
}
function download_neovim() {
echo "Downloading Neovim's binary from $RELEASE_VER release.."
if ! curl --progress-bar --fail -L "$RELEASE_URL" -o "$DOWNLOAD_DIR/$ARCHIVE_NAME.tar.gz"; then
echo "Download failed. Check that the release/filename are correct."
exit 1
fi
echo "Download complete!"
}
function verify_neovim() {
echo "Verifying the installation.."
DOWNLOADED_SHA="$(openssl dgst -sha256 "$DOWNLOAD_DIR/$ARCHIVE_NAME.tar.gz" | awk '{print $2}')"
if [ "$RELEASE_SHA" != "$DOWNLOADED_SHA" ]; then
echo "Error! checksum mismatch."
echo "Expected: $RELEASE_SHA but got: $DOWNLOADED_SHA"
exit 1
fi
echo "Verification complete!"
}
function install_neovim() {
echo "Installing Neovim.."
pushd "$DOWNLOAD_DIR"
tar -xzf "$DOWNLOAD_DIR/$ARCHIVE_NAME.tar.gz"
popd
if [ ! -d "$DOWNLOAD_DIR/$RELEASE_NAME" ]; then
# fallback to archive name
RELEASE_NAME="$ARCHIVE_NAME"
fi
# https://dev.to/ackshaey/macos-vs-linux-the-cp-command-will-trip-you-up-2p00
cp -r "$DOWNLOAD_DIR/$RELEASE_NAME/." "$LV_INSTALL_PREFIX"
echo "Installation complete!"
echo "Now you can run $LV_INSTALL_PREFIX/bin/nvim"
}
function __invalid__prefix__handler() {
echo "Error! Invalid value for LV_INSTALL_PREFIX: [$INSTALL_PREFIX]"
echo "Please verify that the folder exists and re-run the installer!"
exit 1
}
main "$@"
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