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- // Copyright 2022 The Gitea Authors. All rights reserved.
- // SPDX-License-Identifier: MIT
-
- package repo
-
- import (
- "bytes"
- "io"
- "net/http"
- "path"
-
- "code.gitea.io/gitea/modules/charset"
- "code.gitea.io/gitea/modules/context"
- "code.gitea.io/gitea/modules/git"
- "code.gitea.io/gitea/modules/markup"
- "code.gitea.io/gitea/modules/typesniffer"
- "code.gitea.io/gitea/modules/util"
- )
-
- // RenderFile renders a file by repos path
- func RenderFile(ctx *context.Context) {
- blob, err := ctx.Repo.Commit.GetBlobByPath(ctx.Repo.TreePath)
- if err != nil {
- if git.IsErrNotExist(err) {
- ctx.NotFound("GetBlobByPath", err)
- } else {
- ctx.ServerError("GetBlobByPath", err)
- }
- return
- }
-
- dataRc, err := blob.DataAsync()
- if err != nil {
- ctx.ServerError("DataAsync", err)
- return
- }
- defer dataRc.Close()
-
- buf := make([]byte, 1024)
- n, _ := util.ReadAtMost(dataRc, buf)
- buf = buf[:n]
-
- st := typesniffer.DetectContentType(buf)
- isTextFile := st.IsText()
-
- rd := charset.ToUTF8WithFallbackReader(io.MultiReader(bytes.NewReader(buf), dataRc))
-
- if markupType := markup.Type(blob.Name()); markupType == "" {
- if isTextFile {
- _, err = io.Copy(ctx.Resp, rd)
- if err != nil {
- ctx.ServerError("Copy", err)
- }
- return
- }
- ctx.Error(http.StatusInternalServerError, "Unsupported file type render")
- return
- }
-
- treeLink := ctx.Repo.RepoLink + "/src/" + ctx.Repo.BranchNameSubURL()
- if ctx.Repo.TreePath != "" {
- treeLink += "/" + util.PathEscapeSegments(ctx.Repo.TreePath)
- }
-
- ctx.Resp.Header().Add("Content-Security-Policy", "frame-src 'self'; sandbox allow-scripts")
- err = markup.Render(&markup.RenderContext{
- Ctx: ctx,
- RelativePath: ctx.Repo.TreePath,
- URLPrefix: path.Dir(treeLink),
- Metas: ctx.Repo.Repository.ComposeDocumentMetas(),
- GitRepo: ctx.Repo.GitRepo,
- InStandalonePage: true,
- }, rd, ctx.Resp)
- if err != nil {
- ctx.ServerError("Render", err)
- return
- }
- }
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