fs.go

// Copyright © 2022 zc2638 <zc2638@qq.com>.
//
// 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 swag

import (
	"io/fs"
	"net/http"
	"path"
)

// DirFS returns a http.FileSystem by the specified directory path and FS
func DirFS(dir string, fsys fs.FS) http.FileSystem {
	return dirFS{
		dir: dir,
		fs:  http.FS(fsys),
	}
}

type dirFS struct {
	dir string
	fs  http.FileSystem
}

func (f dirFS) Open(name string) (http.File, error) {
	return f.fs.Open(path.Join(f.dir, name))
}