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// Copyright 2023 The Bazel Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"crypto/sha256"
"io"
"log"
"os"
)
func main() {
h := sha256.New()
out, err := os.Create(os.Args[1])
if err != nil {
log.Fatal(err)
}
defer out.Close()
for _, filename := range os.Args[2:] {
f, err := os.Open(filename)
if err != nil {
log.Fatal(err)
}
defer f.Close()
if _, err := io.Copy(h, f); err != nil {
log.Fatal(err)
}
}
if _, err := out.Write(h.Sum(nil)); err != nil {
log.Fatal(err)
}
}
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