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starship/install/install.sh

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#!/bin/bash
# Options
#
# -V, --verbose
# Enable verbose output for the installer
#
# -f, -y, --force, --yes
# Skip the confirmation prompt during installation
#
# -p, --platform
# Override the platform identified by the installer
#
# -b, --bin-dir
# Override the bin installation directory
#
# -a, --arch
# Override the architecture identified by the installer
#
# -B, --base-url
# Override the base URL used for downloading releases
set -euo pipefail
printf "\n"
BOLD="$(tput bold 2>/dev/null || echo '')"
GREY="$(tput setaf 0 2>/dev/null || echo '')"
UNDERLINE="$(tput smul 2>/dev/null || echo '')"
RED="$(tput setaf 1 2>/dev/null || echo '')"
GREEN="$(tput setaf 2 2>/dev/null || echo '')"
YELLOW="$(tput setaf 3 2>/dev/null || echo '')"
BLUE="$(tput setaf 4 2>/dev/null || echo '')"
MAGENTA="$(tput setaf 5 2>/dev/null || echo '')"
NO_COLOR="$(tput sgr0 2>/dev/null || echo '')"
SUPPORTED_TARGETS="x86_64-unknown-linux-gnu x86_64-unknown-linux-musl \
i686-unknown-linux-musl aarch64-unknown-linux-musl \
arm-unknown-linux-musleabihf x86_64-apple-darwin \
aarch64-apple-darwin x86_64-pc-windows-msvc \
i686-pc-windows-msvc aarch64-pc-windows-msvc \
x86_64-unknown-freebsd"
info() {
printf "%s\n" "${BOLD}${GREY}>${NO_COLOR} $*"
}
warn() {
printf "%s\n" "${YELLOW}! $*${NO_COLOR}"
}
error() {
printf "%s\n" "${RED}x $*${NO_COLOR}" >&2
}
complete() {
printf "%s\n" "${GREEN}${NO_COLOR} $*"
}
# Gets path to a temporary file, even if
get_tmpfile() {
local suffix
suffix="$1"
if hash mktemp; then
printf "%s.%s" "$(mktemp)" "${suffix}"
else
# No really good options here--let's pick a default + hope
printf "/tmp/starship.%s" "${suffix}"
fi
}
# Test if a location is writeable by trying to write to it. Windows does not let
# you test writeability other than by writing: https://stackoverflow.com/q/1999988
test_writeable() {
local path
path="${1:-}/test.txt"
if touch "${path}" 2>/dev/null; then
rm "${path}"
return 0
else
return 1
fi
}
fetch() {
local command
if hash curl 2>/dev/null; then
set +e
command="curl --silent --fail --location $1"
curl --silent --fail --location "$1"
rc=$?
set -e
else
if hash wget 2>/dev/null; then
set +e
command="wget -O- -q $1"
wget -O- -q "$1"
rc=$?
set -e
else
error "No HTTP download program (curl, wget) found…"
exit 1
fi
fi
if [ $rc -ne 0 ]; then
printf "\n" >&2
error "Command failed (exit code $rc): ${BLUE}${command}${NO_COLOR}"
printf "\n" >&2
info "This is likely due to Starship not yet supporting your configuration." >&2
info "If you would like to see a build for your configuration," >&2
info "please create an issue requesting a build for ${MAGENTA}${ARCH}-${PLATFORM}${NO_COLOR}:" >&2
info "${BOLD}${UNDERLINE}https://github.com/starship/starship/issues/new/${NO_COLOR}\n" >&2
exit $rc
fi
}
fetch_and_unpack() {
local sudo
local tmpfile
sudo="$1"
# I'd like to separate this into a fetch() and unpack() function, but I can't
# figure out how to get bash functions to read STDIN/STDOUT from pipes
if [ "${EXT}" = "tar.gz" ]; then
fetch "${URL}" | ${sudo} tar xz"${VERBOSE}"f - -C "${BIN_DIR}"
elif [ "${EXT}" = "zip" ]; then
# According to https://unix.stackexchange.com/q/2690, zip files cannot be read
# through a pipe. We'll have to do our own file-based setup.
tmpfile="$(get_tmpfile "${EXT}")"
fetch "${URL}" >"${tmpfile}"
${sudo} unzip "${tmpfile}" -d "${BIN_DIR}"
rm "${tmpfile}"
else
error "Unknown package extension."
info "This almost certainly results from a bug in this script--please file a"
info "bug report at https://github.com/starship/starship/issues"
exit 1
fi
}
elevate_priv() {
if ! hash sudo 2>/dev/null; then
error 'Could not find the command "sudo", needed to get permissions for install.'
info "If you are on Windows, please run your shell as an administrator, then"
info "rerun this script. Otherwise, please run this script as root, or install"
info "sudo."
exit 1
fi
if ! sudo -v; then
error "Superuser not granted, aborting installation"
exit 1
fi
}
install() {
local msg
local sudo
if test_writeable "${BIN_DIR}"; then
sudo=""
msg="Installing Starship, please wait…"
else
warn "Escalated permissions are required to install to ${BIN_DIR}"
elevate_priv
sudo="sudo"
msg="Installing Starship as root, please wait…"
fi
info "$msg"
fetch_and_unpack "${sudo}"
}
# Currently supporting:
# - win (Git Bash)
# - darwin
# - linux
# - linux_musl (Alpine)
# - freebsd
detect_platform() {
local platform
platform="$(uname -s | tr '[:upper:]' '[:lower:]')"
case "${platform}" in
msys_nt*) platform="pc-windows-msvc" ;;
cygwin_nt*) platform="pc-windows-msvc";;
# mingw is Git-Bash
mingw*) platform="pc-windows-msvc" ;;
# use the statically compiled musl bins on linux to avoid linking issues.
linux) platform="unknown-linux-musl" ;;
darwin) platform="apple-darwin" ;;
freebsd) platform="unknown-freebsd" ;;
esac
echo "${platform}"
}
# Currently supporting:
# - x86_64
# - i386
detect_arch() {
local arch
arch="$(uname -m | tr '[:upper:]' '[:lower:]')"
case "${arch}" in
amd64) arch="x86_64" ;;
armv*) arch="arm" ;;
arm64) arch="aarch64" ;;
esac
# `uname -m` in some cases mis-reports 32-bit OS as 64-bit, so double check
if [ "${arch}" = "x86_64" ] && [ "$(getconf LONG_BIT)" -eq 32 ]; then
arch=i686
elif [ "${arch}" = "aarch64" ] && [ "$(getconf LONG_BIT)" -eq 32 ]; then
arch=arm
fi
echo "${arch}"
}
detect_target() {
local arch="$1"
local platform="$2"
local target="$arch-$platform"
if [ "${target}" = "arm-unknown-linux-musl" ]; then
target="${target}eabihf"
fi
echo "${target}"
}
confirm() {
if [ -z "${FORCE-}" ]; then
printf "%s " "${MAGENTA}?${NO_COLOR} $* ${BOLD}[y/N]${NO_COLOR}"
set +e
read -r yn </dev/tty
rc=$?
set -e
if [ $rc -ne 0 ]; then
error "Error reading from prompt (please re-run with the '--yes' option)"
exit 1
fi
if [ "$yn" != "y" ] && [ "$yn" != "yes" ]; then
error 'Aborting (please answer "yes" to continue)'
exit 1
fi
fi
}
check_bin_dir() {
local bin_dir="$1"
if [ ! -d "$BIN_DIR" ]; then
error "Installation location $BIN_DIR does not appear to be a directory"
info "Make sure the location exists and is a directory, then try again."
exit 1
fi
# https://stackoverflow.com/a/11655875
local good
good=$(
IFS=:
for path in $PATH; do
if [ "${path}" = "${bin_dir}" ]; then
echo 1
break
fi
done
)
if [ "${good}" != "1" ]; then
warn "Bin directory ${bin_dir} is not in your \$PATH"
fi
}
is_build_available() {
local arch="$1"
local platform="$2"
local target="$3"
local good
good=$(
IFS=" "
for t in $SUPPORTED_TARGETS; do
if [ "${t}" == "${target}" ]; then
echo 1
break
fi
done
)
if [ "${good}" != "1" ]; then
error "${arch} builds for ${platform} are not yet available for Starship"
printf "\n" >&2
info "If you would like to see a build for your configuration,"
info "please create an issue requesting a build for ${MAGENTA}${target}${NO_COLOR}:"
info "${BOLD}${UNDERLINE}https://github.com/starship/starship/issues/new/${NO_COLOR}"
printf "\n"
exit 1
fi
}
# defaults
if [ -z "${PLATFORM-}" ]; then
PLATFORM="$(detect_platform)"
fi
if [ -z "${BIN_DIR-}" ]; then
BIN_DIR=/usr/local/bin
fi
if [ -z "${ARCH-}" ]; then
ARCH="$(detect_arch)"
fi
if [ -z "${BASE_URL-}" ]; then
BASE_URL="https://github.com/starship/starship/releases"
fi
# parse argv variables
while [ "$#" -gt 0 ]; do
case "$1" in
-p | --platform)
PLATFORM="$2"
shift 2
;;
-b | --bin-dir)
BIN_DIR="$2"
shift 2
;;
-a | --arch)
ARCH="$2"
shift 2
;;
-B | --base-url)
BASE_URL="$2"
shift 2
;;
-V | --verbose)
VERBOSE=1
shift 1
;;
-f | -y | --force | --yes)
FORCE=1
shift 1
;;
-p=* | --platform=*)
PLATFORM="${1#*=}"
shift 1
;;
-b=* | --bin-dir=*)
BIN_DIR="${1#*=}"
shift 1
;;
-a=* | --arch=*)
ARCH="${1#*=}"
shift 1
;;
-B=* | --base-url=*)
BASE_URL="${1#*=}"
shift 1
;;
-V=* | --verbose=*)
VERBOSE="${1#*=}"
shift 1
;;
-f=* | -y=* | --force=* | --yes=*)
FORCE="${1#*=}"
shift 1
;;
*)
error "Unknown option: $1"
exit 1
;;
esac
done
TARGET="$(detect_target "${ARCH}" "${PLATFORM}")"
is_build_available "${ARCH}" "${PLATFORM}" "${TARGET}"
printf " %s\n" "${UNDERLINE}Configuration${NO_COLOR}"
info "${BOLD}Bin directory${NO_COLOR}: ${GREEN}${BIN_DIR}${NO_COLOR}"
info "${BOLD}Platform${NO_COLOR}: ${GREEN}${PLATFORM}${NO_COLOR}"
info "${BOLD}Arch${NO_COLOR}: ${GREEN}${ARCH}${NO_COLOR}"
# non-empty VERBOSE enables verbose untarring
if [ -n "${VERBOSE-}" ]; then
VERBOSE=v
info "${BOLD}Verbose${NO_COLOR}: yes"
else
VERBOSE=
fi
echo
EXT=tar.gz
if [ "${PLATFORM}" = "pc-windows-msvc" ]; then
EXT=zip
fi
URL="${BASE_URL}/latest/download/starship-${TARGET}.${EXT}"
info "Tarball URL: ${UNDERLINE}${BLUE}${URL}${NO_COLOR}"
confirm "Install Starship ${GREEN}latest${NO_COLOR} to ${BOLD}${GREEN}${BIN_DIR}${NO_COLOR}?"
check_bin_dir "${BIN_DIR}"
install
complete "Starship installed"
echo
info "Please follow the steps for your shell to complete the installation:
${BOLD}${UNDERLINE}Bash${NO_COLOR}
Add the following to the end of ${BOLD}~/.bashrc${NO_COLOR}:
eval \"\$(starship init bash)\"
${BOLD}${UNDERLINE}Fish${NO_COLOR}
Add the following to the end of ${BOLD}~/.config/fish/config.fish${NO_COLOR}:
starship init fish | source
${BOLD}${UNDERLINE}Zsh${NO_COLOR}
Add the following to the end of ${BOLD}~/.zshrc${NO_COLOR}:
eval \"\$(starship init zsh)\"
${BOLD}${UNDERLINE}Ion${NO_COLOR}
Add the following to the end of ${BOLD}~/.config/ion/initrc${NO_COLOR}:
eval \$(starship init ion)
"