Download zig binary extract it and link the executable file

upgrade-zig.sh

set -e

DEFAULT_ZIG_DIR="$HOME/local/opt"
DEFAULT_BIN_DIR="$HOME/local/bin"
URL="${1}"
ZIG_DIR="${2:-$DEFAULT_ZIG_DIR}"
BIN_DIR="${3:-$DEFAULT_BIN_DIR}"

function error() {
    err_code=$1
    err_msg=$2
    echo "ERROR: $err_msg"
    exit $err_code
}

if [ -z "$URL" ]; then
    error 1 "zig download URL is missing!"
fi

FILENAME=`echo $URL | cut -d "/" -f 5`
DIRNAME=`echo $FILENAME | awk -F'.tar' '{print $1}'`
DOWNLOAD_PATH="$ZIG_DIR/$FILENAME"

if [ ! -d "$ZIG_DIR/$DIRNAME" ]; then
    echo "download from ${URL} to ${DOWNLOAD_PATH}"
    wget -O $DOWNLOAD_PATH $URL
    tar -xf $DOWNLOAD_PATH -C $ZIG_DIR
else
    echo "zig directory <$ZIG_DIR/$DIRNAME> already exits"
fi

echo -e "link zig-current\n from: <$ZIG_DIR/$DIRNAME>\n   to: <$ZIG_DIR/zig-current>"
ln -sf $ZIG_DIR/$DIRNAME $ZIG_DIR/zig-current

echo -e "link zig\n from: <$ZIG_DIR/zig-current/zig>\n   to: <$BIN_DIR/zig>"
ln -sf $ZIG_DIR/zig-current/zig $BIN_DIR/zig

echo ">> upgrade success!"
zig version