Adding upstream version 3.10.8.

Signed-off-by: Daniel Baumann <daniel@debian.org>

tree/f3/objects/sha.go

@@ -0,0 +1,68 @@
+// Copyright Earl Warren <contact@earl-warren.org>
+// Copyright Loïc Dachary <loic@dachary.org>
+// SPDX-License-Identifier: MIT
+
+package objects
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"fmt"
+	"hash"
+	"io"
+	"net/http"
+
+	options_http "code.forgejo.org/f3/gof3/v3/options/http"
+)
+
+type SHASetter interface {
+	SetSHA(sha string)
+}
+
+func FuncReadURLAndSetSHA(newHTTPClient options_http.NewMigrationHTTPClientFun, url string, sha SHASetter) func() io.ReadCloser {
+	return func() io.ReadCloser {
+		req, err := http.NewRequest("GET", url, nil)
+		if err != nil {
+			panic(err)
+		}
+		httpClient := newHTTPClient()
+		resp, err := httpClient.Do(req)
+		if err != nil {
+			panic(fmt.Errorf("while downloading %s %w", url, err))
+		}
+
+		return FuncReadAndSetSHA(resp.Body, sha)()
+	}
+}
+
+type readAndSetSHA struct {
+	reader io.Reader
+	closer io.Closer
+	sha    SHASetter
+	hasher hash.Hash
+}
+
+func (o *readAndSetSHA) Read(b []byte) (n int, err error) {
+	return o.reader.Read(b)
+}
+
+func (o *readAndSetSHA) Close() error {
+	o.sha.SetSHA(hex.EncodeToString(o.hasher.Sum(nil)))
+	return o.closer.Close()
+}
+
+func newReadAndSetSHA(reader io.ReadCloser, sha SHASetter) *readAndSetSHA {
+	hasher := sha256.New()
+	return &readAndSetSHA{
+		reader: io.TeeReader(reader, hasher),
+		closer: reader,
+		sha:    sha,
+		hasher: hasher,
+	}
+}
+
+func FuncReadAndSetSHA(reader io.ReadCloser, sha SHASetter) func() io.ReadCloser {
+	return func() io.ReadCloser {
+		return newReadAndSetSHA(reader, sha)
+	}
+}