iankelling.org Git - buildscripts/blob - go

   1 #!/bin/bash
   2 # Copyright (C) 2019 Ian Kelling
   3 # SPDX-License-Identifier: AGPL-3.0-or-later
   4
   5 # usage: no args, run to install latest go.
   6
   7 if [ -z "$BASH_VERSION" ]; then echo "error: shell is not bash" >&2; exit 1; fi
   8
   9 shopt -s inherit_errexit 2>/dev/null ||: # ignore fail in bash < 4.4
  10 source /a/bin/errhandle/err
  11
  12
  13 m() { printf "$pre %s\n"  "$*"; "$@"; }
  14 e() { printf "$pre %s\n"  "$*"; }
  15 err() { echo "[$(date +'%Y-%m-%d %H:%M:%S%z')]: $0: $*" >&2; }
  16
  17 m cd /a/opt/go.git
  18 # don't check for updates on go more than once a day
  19 yesterday=$(( $(date +%s) - 60*60*24 ))
  20 if (( $(stat -c %Y FETCH_HEAD) < yesterday )); then
  21   m git fetch
  22   touch ~/.local/gofetch
  23
  24   vers=($(git tag | sort -Vr | grep -E '^go[0-9.]+$' | head))
  25
  26   ver=${vers[0]}
  27   dl() {
  28     arch=$(dpkg --print-architecture)
  29     f=${ver}.linux-${arch}.tar.gz
  30
  31     if [[ -e $f ]]; then
  32       timestamp=$(stat -c %Y $f)
  33     else
  34       timestamp=0
  35     fi
  36     m wget -nv -N https://dl.google.com/go/$f || ret=$?
  37   }
  38   dl
  39   # 8 is return code for 404. for a new release, they might not have a binary out yet
  40   if [[ $ret == 8 ]]; then
  41     ver=${vers[1]}
  42     dl
  43   fi
  44
  45   new_timestamp=$(stat -c %Y $f)
  46   if [[ $timestamp != $new_timestamp || ! -e /usr/local/go/bin/go ]]; then
  47     m sudo rm -rf /usr/local/go
  48     m sudo tar -C /usr/local -xzf $f
  49   fi
  50
  51   shopt -s nullglob
  52   for x in go*.tar.gz; do
  53     if [[ $x == $f ]]; then continue; fi
  54     rm -fv $x
  55   done
  56
  57 fi