just/docs/install.sh

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#!/usr/bin/env bash
set -euo pipefail
if [ ! -z ${GITHUB_ACTIONS-} ]; then
set -x
fi
help() {
cat <<'EOF'
Install a binary release of a just hosted on GitHub
USAGE:
install [options]
FLAGS:
-h, --help Display this message
-f, --force Force overwriting an existing binary
OPTIONS:
--tag TAG Tag (version) of the crate to install, defaults to latest release
--to LOCATION Where to install the binary [default: ~/.cargo/bin]
--target TARGET
EOF
}
git=casey/just
crate=just
url=https://github.com/casey/just
releases=$url/releases
say() {
echo "install: $@"
}
say_err() {
say "$@" >&2
}
err() {
if [ ! -z ${td-} ]; then
rm -rf $td
fi
say_err "error: $@"
exit 1
}
need() {
if ! command -v $1 > /dev/null 2>&1; then
err "need $1 (command not found)"
fi
}
force=false
while test $# -gt 0; do
case $1 in
--force | -f)
force=true
;;
--help | -h)
help
exit 0
;;
--tag)
tag=$2
shift
;;
--target)
target=$2
shift
;;
--to)
dest=$2
shift
;;
*)
;;
esac
shift
done
# Dependencies
need basename
need curl
need install
need mkdir
need mktemp
need tar
# Optional dependencies
if [ -z ${tag-} ]; then
need cut
need rev
fi
if [ -z ${dest-} ]; then
dest="$HOME/.cargo/bin"
fi
if [ -z ${tag-} ]; then
tag=$(curl -s "$releases/latest" | cut -d'"' -f2 | rev | cut -d'/' -f1 | rev)
fi
if [ -z ${target-} ]; then
uname_target=`uname -m`-`uname -s`
case $uname_target in
2021-11-27 01:01:41 -08:00
aarch64-Linux) target=aarch64-unknown-linux-musl;;
arm64-Darwin) target=aarch64-apple-darwin;;
x86_64-Darwin) target=x86_64-apple-darwin;;
x86_64-Linux) target=x86_64-unknown-linux-musl;;
x86_64-Windows_NT) target=x86_64-pc-windows-msvc;;
*)
err 'Could not determine target from output of `uname -m`-`uname -s`, please use `--target`:' $uname_target
;;
esac
fi
archive="$releases/download/$tag/$crate-$tag-$target.tar.gz"
say_err "Repository: $url"
say_err "Crate: $crate"
say_err "Tag: $tag"
say_err "Target: $target"
say_err "Destination: $dest"
say_err "Archive: $archive"
td=$(mktemp -d || mktemp -d -t tmp)
curl -sL $archive | tar -C $td -xz
for f in $(ls $td); do
test -x $td/$f || continue
if [ -e "$dest/$f" ] && [ $force = false ]; then
err "$f already exists in $dest"
else
mkdir -p $dest
install -m 755 $td/$f $dest
fi
done
rm -rf $td