tools/license.sh: script to generate LICENSE for product

Runs from the project root directory.
That will generate LICENSE.prod, which should replace LICENSE
in the released product.

This script uses `yarn licenses generate-disclaimer`,
so this cl adds the dev dependency on yarn.

We call this during the release process.

And delete thirdpartynotices.txt - that is stale and was never updated after the first introduction. The autogenerated LICENSE file with tools/license.sh includes the license for json-rpc2.

Change-Id: I5c0869bc9a86aac1769441a663229eb4c5141b73
GitHub-Last-Rev: b561d4c
GitHub-Pull-Request: golang#240
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/238860
Reviewed-by: Rebecca Stambler <[email protected]>

package.json

@@ -74,7 +74,8 @@
     "sinon": "^9.0.2",
     "tslint": "^6.1.1",
     "typescript": "^3.8.3",
-    "vscode-test": "^1.3.0"
+    "vscode-test": "^1.3.0",
+    "yarn": "^1.22.4"
   },
   "engines": {
     "vscode": "^1.41.0"

tools/license.sh

@@ -0,0 +1,70 @@
+#!/bin/bash
+
+# Copyright 2020 The Go Authors. All rights reserved.
+# Licensed under the MIT License. See LICENSE in the project root for license information.
+
+set -euo pipefail
+
+root_dir() {
+  local script_name="${0}"
+  local script_dir=$(dirname "${script_name}")
+  local parent_dir=$(cd "${script_dir}/.." && pwd)
+  echo "${parent_dir}"
+}
+
+ROOT="$(root_dir)"
+cd "${ROOT}"  # always run from the root directory.
+
+WORKTREE="$(mktemp -d)"
+BRANCH="license-gen-$(date +%Y%m%d%H%M%S)"
+
+git fetch
+git worktree add --track -b "${BRANCH}" "${WORKTREE}" origin/master
+
+cd "${WORKTREE}"
+export GIT_GOFMT_HOOK=off
+
+YARN="${ROOT}/node_modules/.bin/yarn"
+
+ALL_LICENSES=$(
+  $YARN licenses list --json --no-progress 2>/dev/null|
+  jq 'select(.type == "table") | .data.body | map( {name: .[0], version: .[1], license: .[2], url: .[3], verndor: .[4], vendorName: .[5]} )')
+
+NG=$(echo "${ALL_LICENSES}" | jq '
+{
+  "Apache-2.0": 1,
+  "BSD-2-Clause": 1,
+  "BSD-3-Clause": 1,
+  "ISC": 1,
+  "MIT": 1,
+  "Unlicense": 1,
+  "0BSD": 1,
+  "(Unlicense OR Apache-2.0)": 1,
+} as $allowed_licenses |
+{
+  "[email protected]": 1,
+} as $allow_list |
+.[] | select(.license | in($allowed_licenses) | not)
+| select((.name+"@"+.version) | in($allow_list) | not) ')
+
+if [ -z "${NG}" ];
+then
+  echo "PASSED license check"
+else
+  echo "FAILED license check. The following dependencies need manual check: ${NG}" &&
+  echo "WORKTREE=${WORKTREE}" &&
+  exit 1
+fi
+
+LICENSEFILE="LICENSE.prod"
+cat LICENSE > "${LICENSEFILE}"
+printf "\n\n" >> "${LICENSEFILE}"
+"${YARN}" licenses generate-disclaimer --prod >> "${LICENSEFILE}"
+
+if [[ -f thirdpartynotices.txt ]]
+then
+  printf "\n" >> "${LICENSEFILE}"
+  cat thirdpartynotices.txt >> "${LICENSEFILE}"
+fi
+
+cd - && mv "${WORKTREE}/${LICENSEFILE}" . && git worktree remove "${WORKTREE}" -f