update-zig.sh

#!/usr/bin/env bash

download-zig() {
  arch=$(uname -m)
  os=$(uname -s | tr '[:upper:]' '[:lower:]')
  double="$arch-$os"

  if [ -z "$1" ]
  then
    echo missing version argument
    return
  fi
  saveversion="$1"
  echo saving $saveversion

  savepath="$HOME/.local/share/zig/$saveversion"
  filename=zig-$os-$arch-$saveversion.tar.xz

  if [ -d $savepath ]
  then
    echo local folder already exists
    echo $savepath
  else
    echo local folder does not exist, downloading
    wget -q --show-progress http://mirrors.nektro.net/zig/$saveversion/$filename
    wget -q --show-progress http://mirrors.nektro.net/zig/$saveversion/$filename.minisig
    echo verifying
    minisign -Vm $filename -P 'RWSGOq2NVecA2UPNdBUZykf1CCb147pkmdtYxgb3Ti+JO/wCYvhbAb/U' || return
    echo extracting
    tar -xf $filename
    folder=$filename
    folder=${folder%.*}
    folder=${folder%.*}
    rm $filename
    rm $filename.minisig
    mkdir -p $HOME/.local/share/zig
    mv $folder $savepath
  fi
}
update-zig() {
  arch=$(uname -m)
  os=$(uname -s | tr '[:upper:]' '[:lower:]')
  double="$arch-$os"
  old=$(zig version)

  if [[ $1 == "master" ]]
  then
    new=$(curl -s https://ziglang.org/download/index.json | jq -r '.master.version')
  else
    new=$1
  fi

  download-zig $new
  savepath="$HOME/.local/share/zig/$new"
  ln -s -T -f $savepath/zig ~/.local/bin/zig
  ln -s -T -f $savepath/zig ~/.local/bin/zig-$new
  echo
  echo "Updated Zig from ${old} to $(zig version)"
}