60e4a98ab0
The `ToUTF8*` functions were stripping BOM, while BOM is actually valid in UTF8, so the stripping must be optional depending on use case. This does: - Add a options struct to all `ToUTF8*` functions, that by default will strip BOM to preserve existing behaviour - Remove `ToUTF8` function, it was dead code - Rename `ToUTF8WithErr` to `ToUTF8` - Preserve BOM in Monaco Editor - Remove a unnecessary newline in the textarea value. Browsers did ignore it, it seems but it's better not to rely on this behaviour. Fixes: https://github.com/go-gitea/gitea/issues/28743 Related: https://github.com/go-gitea/gitea/issues/6716 which seems to have once introduced a mechanism that strips and re-adds the BOM, but from what I can tell, this mechanism was removed at some point after that PR.
78 lines
1.9 KiB
Go
78 lines
1.9 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(ctx),
|
|
GitRepo: ctx.Repo.GitRepo,
|
|
InStandalonePage: true,
|
|
}, rd, ctx.Resp)
|
|
if err != nil {
|
|
ctx.ServerError("Render", err)
|
|
return
|
|
}
|
|
}
|