初始提交: Gitea 项目代码

routers/common/serve.go

@@ -0,0 +1,45 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package common
+
+import (
+	"path"
+	"time"
+
+	repo_model "gitea.dev/models/repo"
+	"gitea.dev/modules/git"
+	"gitea.dev/modules/httpcache"
+	"gitea.dev/modules/httplib"
+	"gitea.dev/modules/setting"
+	"gitea.dev/modules/structs"
+	"gitea.dev/services/context"
+)
+
+// ServeBlob download a git.Blob
+func ServeBlob(ctx *context.Base, repo *repo_model.Repository, filePath string, blob *git.Blob, lastModified *time.Time) error {
+	if httpcache.HandleGenericETagPrivateCache(ctx.Req, ctx.Resp, `"`+blob.ID.String()+`"`, lastModified) {
+		return nil
+	}
+
+	if err := repo.LoadOwner(ctx); err != nil {
+		return err
+	}
+
+	dataRc, err := blob.DataAsync()
+	if err != nil {
+		return err
+	}
+	defer dataRc.Close()
+
+	if lastModified == nil {
+		lastModified = new(time.Time)
+	}
+	httplib.ServeUserContentByReader(ctx.Req, ctx.Resp, blob.Size(), dataRc, httplib.ServeHeaderOptions{
+		Filename:      path.Base(filePath),
+		CacheIsPublic: !repo.IsPrivate && repo.Owner.Visibility == structs.VisibleTypePublic,
+		CacheDuration: setting.StaticCacheTime,
+		LastModified:  *lastModified,
+	})
+	return nil
+}