From 8da5c1f72f84d2bf6fd6486aa2a00c481d20057e Mon Sep 17 00:00:00 2001
From: "Gustavo L de Mello (Guz)" <contact@guz.one>
Date: Thu, 9 Jan 2025 10:41:02 -0300
Subject: [PATCH] feat(blogo): implementation of default renderer

---
 blogo/defaults.go | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/blogo/defaults.go b/blogo/defaults.go
index f626c83..6ec7caf 100644
--- a/blogo/defaults.go
+++ b/blogo/defaults.go
@@ -1,6 +1,8 @@
 package blogo
 
 import (
+	"errors"
+	"fmt"
 	"io"
 	"io/fs"
 )
@@ -28,5 +30,46 @@ func (p *defaultRenderer) Name() string {
 }
 
 func (p *defaultRenderer) Render(f fs.File, w io.Writer) error {
+	if d, ok := f.(fs.ReadDirFile); ok {
+		return p.renderDirectory(d, w)
+	}
+
+	buf := make([]byte, 1024)
+	for {
+		n, err := f.Read(buf)
+		if err != nil && err != io.EOF {
+			return err
+		}
+
+		if n == 0 {
+			break
+		}
+
+		_, err = w.Write(buf[:n])
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (p *defaultRenderer) renderDirectory(f fs.ReadDirFile, w io.Writer) error {
+	es, err := f.ReadDir(-1)
+	if err != nil {
+		return err
+	}
+
+	for _, e := range es {
+		s := []byte(fmt.Sprintf("%s", e.Name()))
+		_, err := w.Write(s)
+		if err != nil {
+			return errors.Join(
+				fmt.Errorf("failed to write directory file list, file %s", e.Name()),
+				err,
+			)
+		}
+	}
+
 	return nil
 }