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August 27, 2017 21:58
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install script for nvm
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#!/usr/bin/env bash | |
{ # this ensures the entire script is downloaded # | |
nvm_has() { | |
type "$1" > /dev/null 2>&1 | |
} | |
nvm_install_dir() { | |
echo "${NVM_DIR:-"$HOME/.nvm"}" | |
} | |
nvm_latest_version() { | |
echo "v0.32.0" | |
} | |
# | |
# Outputs the location to NVM depending on: | |
# * The availability of $NVM_SOURCE | |
# * The method used ("script" or "git" in the script, defaults to "git") | |
# NVM_SOURCE always takes precedence unless the method is "script-nvm-exec" | |
# | |
nvm_source() { | |
local NVM_METHOD | |
NVM_METHOD="$1" | |
local NVM_SOURCE_URL | |
NVM_SOURCE_URL="$NVM_SOURCE" | |
if [ "_$NVM_METHOD" = "_script-nvm-exec" ]; then | |
NVM_SOURCE_URL="https://raw.githubusercontent.com/creationix/nvm/$(nvm_latest_version)/nvm-exec" | |
elif [ -z "$NVM_SOURCE_URL" ]; then | |
if [ "_$NVM_METHOD" = "_script" ]; then | |
NVM_SOURCE_URL="https://raw.githubusercontent.com/creationix/nvm/$(nvm_latest_version)/nvm.sh" | |
elif [ "_$NVM_METHOD" = "_git" ] || [ -z "$NVM_METHOD" ]; then | |
NVM_SOURCE_URL="https://github.com/creationix/nvm.git" | |
else | |
echo >&2 "Unexpected value \"$NVM_METHOD\" for \$NVM_METHOD" | |
return 1 | |
fi | |
fi | |
echo "$NVM_SOURCE_URL" | |
} | |
# | |
# Node.js version to install | |
# | |
nvm_node_version() { | |
echo "$NODE_VERSION" | |
} | |
nvm_download() { | |
if nvm_has "curl"; then | |
curl -q "$@" | |
elif nvm_has "wget"; then | |
# Emulate curl with wget | |
ARGS=$(echo "$*" | command sed -e 's/--progress-bar /--progress=bar /' \ | |
-e 's/-L //' \ | |
-e 's/-I /--server-response /' \ | |
-e 's/-s /-q /' \ | |
-e 's/-o /-O /' \ | |
-e 's/-C - /-c /') | |
# shellcheck disable=SC2086 | |
eval wget $ARGS | |
fi | |
} | |
install_nvm_from_git() { | |
local INSTALL_DIR | |
INSTALL_DIR="$(nvm_install_dir)" | |
if [ -d "$INSTALL_DIR/.git" ]; then | |
echo "=> nvm is already installed in $INSTALL_DIR, trying to update using git" | |
command printf "\r=> " | |
command git --git-dir="$INSTALL_DIR"/.git --work-tree="$INSTALL_DIR" fetch 2> /dev/null || { | |
echo >&2 "Failed to update nvm, run 'git fetch' in $INSTALL_DIR yourself." | |
exit 1 | |
} | |
else | |
# Cloning to $INSTALL_DIR | |
echo "=> Downloading nvm from git to '$INSTALL_DIR'" | |
command printf "\r=> " | |
mkdir -p "${INSTALL_DIR}" | |
if [ "$(ls -A "${INSTALL_DIR}")" ]; then | |
command git init "${INSTALL_DIR}" || { | |
echo >&2 'Failed to initialize nvm repo. Please report this!' | |
exit 2 | |
} | |
command git --git-dir="${INSTALL_DIR}/.git" remote add origin "$(nvm_source)" 2> /dev/null \ | |
|| command git --git-dir="${INSTALL_DIR}/.git" remote set-url origin "$(nvm_source)" || { | |
echo >&2 'Failed to add remote "origin" (or set the URL). Please report this!' | |
exit 2 | |
} | |
command git --git-dir="${INSTALL_DIR}/.git" fetch origin --tags || { | |
echo >&2 'Failed to fetch origin with tags. Please report this!' | |
exit 2 | |
} | |
else | |
command git clone "$(nvm_source)" "${INSTALL_DIR}" || { | |
echo >&2 'Failed to clone nvm repo. Please report this!' | |
exit 2 | |
} | |
fi | |
fi | |
command git --git-dir="$INSTALL_DIR"/.git --work-tree="$INSTALL_DIR" checkout -f --quiet "$(nvm_latest_version)" | |
if [ ! -z "$(command git --git-dir="$INSTALL_DIR"/.git --work-tree="$INSTALL_DIR" show-ref refs/heads/master)" ]; then | |
if command git --git-dir="$INSTALL_DIR"/.git --work-tree="$INSTALL_DIR" branch --quiet 2>/dev/null; then | |
command git --git-dir="$INSTALL_DIR"/.git --work-tree="$INSTALL_DIR" branch --quiet -D master >/dev/null 2>&1 | |
else | |
echo >&2 "Your version of git is out of date. Please update it!" | |
command git --git-dir="$INSTALL_DIR"/.git --work-tree="$INSTALL_DIR" branch -D master >/dev/null 2>&1 | |
fi | |
fi | |
return | |
} | |
# | |
# Automatically install Node.js | |
# | |
nvm_install_node() { | |
local NODE_VERSION | |
NODE_VERSION="$(nvm_node_version)" | |
if [ -z "$NODE_VERSION" ]; then | |
return 0 | |
fi | |
echo "=> Installing Node.js version $NODE_VERSION" | |
nvm install "$NODE_VERSION" | |
local CURRENT_NVM_NODE | |
CURRENT_NVM_NODE="$(nvm_version current)" | |
if [ "$(nvm_version "$NODE_VERSION")" == "$CURRENT_NVM_NODE" ]; then | |
echo "=> Node.js version $NODE_VERSION has been successfully installed" | |
else | |
echo >&2 "Failed to install Node.js $NODE_VERSION" | |
fi | |
} | |
install_nvm_as_script() { | |
local INSTALL_DIR | |
INSTALL_DIR="$(nvm_install_dir)" | |
local NVM_SOURCE_LOCAL | |
NVM_SOURCE_LOCAL=$(nvm_source script) | |
local NVM_EXEC_SOURCE | |
NVM_EXEC_SOURCE=$(nvm_source script-nvm-exec) | |
# Downloading to $INSTALL_DIR | |
mkdir -p "$INSTALL_DIR" | |
if [ -f "$INSTALL_DIR/nvm.sh" ]; then | |
echo "=> nvm is already installed in $INSTALL_DIR, trying to update the script" | |
else | |
echo "=> Downloading nvm as script to '$INSTALL_DIR'" | |
fi | |
nvm_download -s "$NVM_SOURCE_LOCAL" -o "$INSTALL_DIR/nvm.sh" || { | |
echo >&2 "Failed to download '$NVM_SOURCE_LOCAL'" | |
return 1 | |
} | |
nvm_download -s "$NVM_EXEC_SOURCE" -o "$INSTALL_DIR/nvm-exec" || { | |
echo >&2 "Failed to download '$NVM_EXEC_SOURCE'" | |
return 2 | |
} | |
chmod a+x "$INSTALL_DIR/nvm-exec" || { | |
echo >&2 "Failed to mark '$INSTALL_DIR/nvm-exec' as executable" | |
return 3 | |
} | |
} | |
# | |
# Detect profile file if not specified as environment variable | |
# (eg: PROFILE=~/.myprofile) | |
# The echo'ed path is guaranteed to be an existing file | |
# Otherwise, an empty string is returned | |
# | |
nvm_detect_profile() { | |
if [ -n "${PROFILE}" ] && [ -f "${PROFILE}" ]; then | |
echo "${PROFILE}" | |
return | |
fi | |
local DETECTED_PROFILE | |
DETECTED_PROFILE='' | |
local SHELLTYPE | |
SHELLTYPE="$(basename "/$SHELL")" | |
if [ "$SHELLTYPE" = "bash" ]; then | |
if [ -f "$HOME/.bashrc" ]; then | |
DETECTED_PROFILE="$HOME/.bashrc" | |
elif [ -f "$HOME/.bash_profile" ]; then | |
DETECTED_PROFILE="$HOME/.bash_profile" | |
fi | |
elif [ "$SHELLTYPE" = "zsh" ]; then | |
DETECTED_PROFILE="$HOME/.zshrc" | |
fi | |
if [ -z "$DETECTED_PROFILE" ]; then | |
if [ -f "$HOME/.profile" ]; then | |
DETECTED_PROFILE="$HOME/.profile" | |
elif [ -f "$HOME/.bashrc" ]; then | |
DETECTED_PROFILE="$HOME/.bashrc" | |
elif [ -f "$HOME/.bash_profile" ]; then | |
DETECTED_PROFILE="$HOME/.bash_profile" | |
elif [ -f "$HOME/.zshrc" ]; then | |
DETECTED_PROFILE="$HOME/.zshrc" | |
fi | |
fi | |
if [ ! -z "$DETECTED_PROFILE" ]; then | |
echo "$DETECTED_PROFILE" | |
fi | |
} | |
# | |
# Check whether the user has any globally-installed npm modules in their system | |
# Node, and warn them if so. | |
# | |
nvm_check_global_modules() { | |
command -v npm >/dev/null 2>&1 || return 0 | |
local NPM_VERSION | |
NPM_VERSION="$(npm --version)" | |
NPM_VERSION="${NPM_VERSION:--1}" | |
[ "${NPM_VERSION%%[!-0-9]*}" -gt 0 ] || return 0 | |
local NPM_GLOBAL_MODULES | |
NPM_GLOBAL_MODULES="$( | |
npm list -g --depth=0 | | |
command sed '/ npm@/d' | | |
command sed '/ (empty)$/d' | |
)" | |
local MODULE_COUNT | |
MODULE_COUNT="$( | |
command printf %s\\n "$NPM_GLOBAL_MODULES" | | |
command sed -ne '1!p' | # Remove the first line | |
wc -l | tr -d ' ' # Count entries | |
)" | |
if [ "${MODULE_COUNT}" != '0' ]; then | |
cat <<-'END_MESSAGE' | |
=> You currently have modules installed globally with `npm`. These will no | |
=> longer be linked to the active version of Node when you install a new node | |
=> with `nvm`; and they may (depending on how you construct your `$PATH`) | |
=> override the binaries of modules installed with `nvm`: | |
END_MESSAGE | |
command printf %s\\n "$NPM_GLOBAL_MODULES" | |
cat <<-'END_MESSAGE' | |
=> If you wish to uninstall them at a later point (or re-install them under your | |
=> `nvm` Nodes), you can remove them from the system Node as follows: | |
$ nvm use system | |
$ npm uninstall -g a_module | |
END_MESSAGE | |
fi | |
} | |
nvm_do_install() { | |
if [ -z "${METHOD}" ]; then | |
# Autodetect install method | |
if nvm_has git; then | |
install_nvm_from_git | |
elif nvm_has nvm_download; then | |
install_nvm_as_script | |
else | |
echo >&2 'You need git, curl, or wget to install nvm' | |
exit 1 | |
fi | |
elif [ "${METHOD}" = 'git' ]; then | |
if ! nvm_has git; then | |
echo >&2 "You need git to install nvm" | |
exit 1 | |
fi | |
install_nvm_from_git | |
elif [ "${METHOD}" = 'script' ]; then | |
if ! nvm_has nvm_download; then | |
echo >&2 "You need curl or wget to install nvm" | |
exit 1 | |
fi | |
install_nvm_as_script | |
fi | |
echo | |
local NVM_PROFILE | |
NVM_PROFILE="$(nvm_detect_profile)" | |
local INSTALL_DIR | |
INSTALL_DIR="$(nvm_install_dir)" | |
SOURCE_STR="\nexport NVM_DIR=\"$INSTALL_DIR\"\n[ -s \"\$NVM_DIR/nvm.sh\" ] && . \"\$NVM_DIR/nvm.sh\" # This loads nvm\n" | |
if [ -z "${NVM_PROFILE-}" ] ; then | |
echo "=> Profile not found. Tried ${NVM_PROFILE} (as defined in \$PROFILE), ~/.bashrc, ~/.bash_profile, ~/.zshrc, and ~/.profile." | |
echo "=> Create one of them and run this script again" | |
echo "=> Create it (touch ${NVM_PROFILE}) and run this script again" | |
echo " OR" | |
echo "=> Append the following lines to the correct file yourself:" | |
command printf "${SOURCE_STR}" | |
else | |
if ! command grep -qc '/nvm.sh' "$NVM_PROFILE"; then | |
echo "=> Appending source string to $NVM_PROFILE" | |
command printf "$SOURCE_STR" >> "$NVM_PROFILE" | |
else | |
echo "=> Source string already in ${NVM_PROFILE}" | |
fi | |
fi | |
# Source nvm | |
# shellcheck source=/dev/null | |
. "${INSTALL_DIR}/nvm.sh" | |
nvm_check_global_modules | |
nvm_install_node | |
nvm_reset | |
echo "=> Close and reopen your terminal to start using nvm or run the following to use it now:" | |
command printf "$SOURCE_STR" | |
} | |
# | |
# Unsets the various functions defined | |
# during the execution of the install script | |
# | |
nvm_reset() { | |
unset -f nvm_reset nvm_has nvm_latest_version \ | |
nvm_source nvm_download install_nvm_as_script install_nvm_from_git \ | |
nvm_detect_profile nvm_check_global_modules nvm_do_install \ | |
nvm_install_dir nvm_node_version nvm_install_node | |
} | |
[ "_$NVM_ENV" = "_testing" ] || nvm_do_install | |
} # this ensures the entire script is downloaded # |
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