Create install

Author: treeder

install

@@ -0,0 +1,90 @@
+#!/bin/sh
+set -e
+
+# Install script to install fn
+
+version="0.3.26"
+
+command_exists() {
+  command -v "$@" > /dev/null 2>&1
+}
+
+case "$(uname -m)" in
+  *64)
+    ;;
+  *)
+    echo >&2 'Error: you are not using a 64bit platform.'
+    echo >&2 'Functions CLI currently only supports 64bit platforms.'
+    exit 1
+    ;;
+esac
+
+if command_exists fn ; then
+  echo >&2 'Warning: "fn" command appears to already exist.'
+  echo >&2 'If you are just upgrading your functions cli client, ignore this and wait a few seconds.'
+  echo >&2 'You may press Ctrl+C now to abort this process.'
+  ( set -x; sleep 5 )
+fi
+
+user="$(id -un 2>/dev/null || true)"
+
+sh_c='sh -c'
+if [ "$user" != 'root' ]; then
+  if command_exists sudo; then
+    sh_c='sudo -E sh -c'
+  elif command_exists su; then
+    sh_c='su -c'
+  else
+    echo >&2 'Error: this installer needs the ability to run commands as root.'
+    echo >&2 'We are unable to find either "sudo" or "su" available to make this happen.'
+    exit 1
+  fi
+fi
+
+curl=''
+if command_exists curl; then
+  curl='curl -sSL -o'
+elif command_exists wget; then
+  curl='wget -qO'
+elif command_exists busybox && busybox --list-modules | grep -q wget; then
+  curl='busybox wget -qO'
+else
+    echo >&2 'Error: this installer needs the ability to run wget or curl.'
+    echo >&2 'We are unable to find either "wget" or "curl" available to make this happen.'
+    exit 1
+fi
+
+url='https://github.com/fnproject/cli/releases/download'
+
+# perform some very rudimentary platform detection
+case "$(uname)" in
+  Linux)
+    $sh_c "$curl /usr/local/bin/fn $url/$version/fn_linux"
+    $sh_c "chmod +x /usr/local/bin/fn"
+    fn --version
+    exit 0
+    ;;
+  Darwin)
+    $sh_c "$curl /usr/local/bin/fn $url/$version/fn_mac"
+    $sh_c "chmod +x /usr/local/bin/fn"
+    fn --version
+    exit 0
+    ;;
+  WindowsNT)
+    $sh_c "$curl $url/$version/fn.exe"
+    # TODO how to make executable? chmod?
+    fn.exe --version
+    exit 0
+    ;;
+esac
+
+cat >&2 <<'EOF'
+
+  Either your platform is not easily detectable or is not supported by this
+  installer script (yet - PRs welcome! [fn/install]).
+  Please visit the following URL for more detailed installation instructions:
+
+    https://github.com/fnproject/fn
+
+EOF
+exit 1