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#!/bin/bash -eu
# Copyright 2020 The Go Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.
set -o pipefail
tempfile=$(mktemp)
cd $(dirname $0)
modhash=$(sha256sum ../../go.sum | awk '{print $1}')
# Make sure we have the code for all the modules we depend on.
go mod download
cat > $tempfile <<END
// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:generate ./gen-licenses.sh licenses.go
package hooks
const licensesText = \`
END
# List all the modules gopls depends on, except other golang.org modules, which
# are known to have the same license.
mods=$(go list -deps -f '{{with .Module}}{{.Path}}{{end}}' golang.org/x/tools/gopls | sort -u | grep -v golang.org)
for mod in $mods; do
# Find the license file, either LICENSE or COPYING, and add it to the result.
dir=$(go list -m -f {{.Dir}} $mod)
license=$(ls -1 $dir | egrep -i '^(LICENSE|COPYING)$')
echo "-- $mod $license --" >> $tempfile
echo >> $tempfile
sed 's/^-- / &/' $dir/$license >> $tempfile
echo >> $tempfile
done
cat >> $tempfile << END
\`
const licensesGeneratedFrom = "$modhash"
END
mv $tempfile licenses.go
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