chore: add install.sh

README.md

@@ -17,6 +17,12 @@ Upt is written in the rust you can install it using [cargo](https://doc.rust-lan
 cargo install upt
 ```
 
+**Use Shell (Mac, Linux)**
+
+```
+curl -fsSL https://raw.githubusercontent.com/sigoden/upt/main/install.sh | sh -s -- --to /usr/local/bin
+```
+
 **Binaries for macOS, Linux, Windows, BSD**
 
 Download from [GitHub Releases](https://github.com/sigoden/upt/releases), unzip and add `upt` to your $PATH.

install.sh

@@ -0,0 +1,165 @@
+#!/bin/sh
+
+repo=sigoden/upt
+crate=upt
+url=https://github.com/$repo
+releases=$url/releases
+
+help() {
+  cat <<EOF
+Install a binary release of a $crate 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: /usr/local/bin]
+    --target TARGET
+EOF
+}
+
+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 curl
+need install
+need mkdir
+need mktemp
+need tar
+
+# Optional dependencies
+if [ -z ${tag-} ]; then
+    need grep
+    need cut
+fi
+
+if [ -z ${target-} ]; then
+    need cut
+fi
+
+if [ -z ${dest-} ]; then
+  dest="/usr/local/bin"
+  if [ ! -d $dest ]; then
+    dest="/usr/bin"
+  fi
+fi
+
+
+if [ -z ${tag-} ]; then
+  tag=$(curl --proto =https --tlsv1.2 -sSf https://api.github.com/repos/$repo/releases/latest |
+    grep tag_name |
+    cut -d'"' -f4
+  )
+fi
+
+if [ -z ${target-} ]; then
+  # bash compiled with MINGW (e.g. git-bash, used in github windows runnners),
+  # unhelpfully includes a version suffix in `uname -s` output, so handle that.
+  # e.g. MINGW64_NT-10-0.19044
+  kernel=$(uname -s | cut -d- -f1)
+  uname_target="`uname -m`-$kernel"
+
+  case $uname_target in
+    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;;
+    x86_64-MINGW64_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
+
+# windows archives are zips, not tarballs
+case $target in
+    x86_64-pc-windows-msvc) extension=zip; need unzip;;
+    *)                      extension=tar.gz;;
+esac
+
+archive="$releases/download/$tag/$crate-$tag-$target.$extension"
+
+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)
+
+if [ "$extension" = "zip" ]; then
+    # unzip on windows cannot always handle stdin, so download first.
+    curl --proto =https --tlsv1.2 -sSfL $archive > $td/$crate.zip
+    unzip -d $td $td/$crate.zip
+else
+    curl --proto =https --tlsv1.2 -sSfL $archive | tar -C $td -xz
+fi
+
+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