refactor(blogo,plugins): move built-in plugins to plugins package

blogo/plugins/plaintext.go

@@ -0,0 +1,81 @@
+// Copyright 2025-present Gustavo "Guz" L. de Mello
+// Copyright 2025-present The Lored.dev Contributors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package plugins
+
+import (
+	"errors"
+	"fmt"
+	"io"
+
+	"forge.capytal.company/loreddev/x/blogo/fs"
+	"forge.capytal.company/loreddev/x/blogo/plugin"
+)
+
+const plainTextName = "blogo-plaintext-renderer"
+
+type painText struct{}
+
+func NewPlainText() plugin.Plugin {
+	return &painText{}
+}
+
+func (p *painText) Name() string {
+	return plainTextName
+}
+
+func (p *painText) 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 *painText) renderDirectory(f fs.ReadDirFile, w io.Writer) error {
+	es, err := f.ReadDir(-1)
+	if err != nil {
+		return err
+	}
+
+	for _, e := range es {
+		_, err := w.Write([]byte(fmt.Sprintf("%s\n", e.Name())))
+		if err != nil {
+			return errors.Join(
+				fmt.Errorf("failed to write directory file list, file %s", e.Name()),
+				err,
+			)
+		}
+	}
+
+	return nil
+}