render_readme: Abstract away README rendering

1 files changed, 28 insertions, 0 deletions

diff --git a/render_readme.go b/render_readme.go
new file mode 100644
index 0000000..21e0aeb
--- /dev/null
+++ b/render_readme.go
@@ -0,0 +1,28 @@
+package main
+
+import (
+	"bytes"
+	"html/template"
+
+	"github.com/go-git/go-git/v5/plumbing/object"
+	"github.com/microcosm-cc/bluemonday"
+	"github.com/yuin/goldmark"
+)
+
+
+func render_readme_at_tree(tree *object.Tree) any {
+	readme_file, err := tree.File("README.md")
+	if err != nil {
+		return "There is no README available."
+	}
+	readme_file_contents, err := readme_file.Contents()
+	if err != nil {
+		return "Unable to fetch contents of README: " + err.Error()
+	}
+	var readme_rendered_unsafe bytes.Buffer
+	err = goldmark.Convert([]byte(readme_file_contents), &readme_rendered_unsafe)
+	if err != nil {
+		return "Unable to render README: " + err.Error()
+	}
+	return template.HTML(bluemonday.UGCPolicy().SanitizeBytes(readme_rendered_unsafe.Bytes()))
+}