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// SPDX-License-Identifier: AGPL-3.0-only
// SPDX-FileContributor: Runxi Yu <https://runxiyu.org>
package main
import (
"bytes"
"html"
"html/template"
"strings"
"github.com/go-git/go-git/v5/plumbing/object"
"github.com/microcosm-cc/bluemonday"
"github.com/niklasfasching/go-org/org"
"github.com/yuin/goldmark"
"github.com/yuin/goldmark/extension"
)
var markdownConverter = goldmark.New(goldmark.WithExtensions(extension.GFM))
func renderReadmeAtTree(tree *object.Tree) (readmeFilename string, readmeRenderedSafeHTML template.HTML) {
var readmeRenderedUnsafe bytes.Buffer
var readmeFile *object.File
var readmeFileContents string
var err error
if readmeFile, err = tree.File("README"); err == nil {
if readmeFileContents, err = readmeFile.Contents(); err != nil {
return "Error fetching README", escapeHTML("Unable to fetch contents of README: " + err.Error())
}
return "README", template.HTML("<pre>" + html.EscapeString(readmeFileContents) + "</pre>") //#nosec G203
}
if readmeFile, err = tree.File("README.md"); err == nil {
if readmeFileContents, err = readmeFile.Contents(); err != nil {
return "Error fetching README", escapeHTML("Unable to fetch contents of README: " + err.Error())
}
if err = markdownConverter.Convert([]byte(readmeFileContents), &readmeRenderedUnsafe); err != nil {
return "Error fetching README", escapeHTML("Unable to render README: " + err.Error())
}
return "README.md", template.HTML(bluemonday.UGCPolicy().SanitizeBytes(readmeRenderedUnsafe.Bytes())) //#nosec G203
}
if readmeFile, err = tree.File("README.org"); err == nil {
if readmeFileContents, err = readmeFile.Contents(); err != nil {
return "Error fetching README", escapeHTML("Unable to fetch contents of README: " + err.Error())
}
orgHTML, err := org.New().Parse(strings.NewReader(readmeFileContents), readmeFilename).Write(org.NewHTMLWriter())
if err != nil {
return "Error fetching README", escapeHTML("Unable to render README: " + err.Error())
}
return "README.org", template.HTML(bluemonday.UGCPolicy().Sanitize(orgHTML)) //#nosec G203
}
return "", ""
}
func escapeHTML(s string) template.HTML {
return template.HTML(html.EscapeString(s)) //#nosec G203
}
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