remove prefix, add remote storage

httpfs.go

@@ -0,0 +1,53 @@
+package filestore
+
+import (
+	"net/http"
+	"strings"
+
+	"github.com/tenrok/filestore/remote"
+)
+
+var _ http.FileSystem = (*HttpFS)(nil)
+
+type HttpFS struct {
+	store         *Store
+	remoteStorage remote.Storage
+}
+
+type Option func(*HttpFS)
+
+// WithRemoteStorage
+func WithRemoteStorage(storage remote.Storage) Option {
+	return func(httpFS *HttpFS) {
+		httpFS.remoteStorage = storage
+	}
+}
+
+// NewHttpFS
+func NewHttpFS(dir string, opts ...Option) (*HttpFS, error) {
+	store, err := NewStore(dir)
+	if err != nil {
+		return nil, err
+	}
+	f := &HttpFS{store: store}
+	for _, opt := range opts {
+		if opt != nil {
+			opt(f)
+		}
+	}
+	return f, nil
+}
+
+// Open
+func (f *HttpFS) Open(name string) (http.File, error) {
+	n := strings.TrimPrefix(name, "/")
+	if f.remoteStorage != nil {
+		return f.remoteStorage.Open(name)
+	}
+	return f.store.Open(n)
+}
+
+// RemoteStorage
+func (f *HttpFS) RemoteStorage() remote.Storage {
+	return f.remoteStorage
+}