mirror of
1
Fork 0
forgejo/routers/web/repo/render.go

78 lines
1.8 KiB
Go

// 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), charset.ConvertOpts{})
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
}
ctx.Resp.Header().Add("Content-Security-Policy", "frame-src 'self'; sandbox allow-scripts")
err = markup.Render(&markup.RenderContext{
Ctx: ctx,
RelativePath: ctx.Repo.TreePath,
Links: markup.Links{
Base: ctx.Repo.RepoLink,
BranchPath: ctx.Repo.BranchNameSubURL(),
TreePath: path.Dir(ctx.Repo.TreePath),
},
Metas: ctx.Repo.Repository.ComposeDocumentMetas(),
GitRepo: ctx.Repo.GitRepo,
InStandalonePage: true,
}, rd, ctx.Resp)
if err != nil {
ctx.ServerError("Render", err)
return
}
}