From 771ea5ef2cd61af382b2d4f2ad320ad82dfc5e45 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Thomas=20Fr=C3=B6ssman?= <thomasf@jossystem.se>
Date: Wed, 17 Feb 2021 21:20:12 +0100
Subject: [PATCH] fs.FS wip

---
 migrate/iofs.go      | 42 ++++++++++++++++++++++++++++++++++++++++++
 migrate/iofs_test.go |  3 +++
 2 files changed, 45 insertions(+)
 create mode 100644 migrate/iofs.go
 create mode 100644 migrate/iofs_test.go

diff --git a/migrate/iofs.go b/migrate/iofs.go
new file mode 100644
index 0000000..70c37db
--- /dev/null
+++ b/migrate/iofs.go
@@ -0,0 +1,42 @@
+// +build go1.16
+
+package migrate
+
+import (
+	"io/fs"
+	"os"
+)
+
+// NewFS returns a MigratorFS that uses as fs.FS filesystem.
+func NewFS(fsys fs.FS) MigratorFS {
+	return iofsMigratorFS{fsys: fsys}
+}
+
+type iofsMigratorFS struct{ fsys fs.FS }
+
+// ReadDir implements the MigratorFS interface.
+func (m iofsMigratorFS) ReadDir(dirname string) ([]fs.FileInfo, error) {
+	d, err := fs.ReadDir(m.fsys, dirname)
+	if err != nil {
+		return nil, err
+	}
+	var fis []os.FileInfo
+	for _, v := range d {
+		fi, err := v.Info()
+		if err != nil {
+			return nil, err
+		}
+		fis = append(fis, fi)
+	}
+	return fis, nil
+}
+
+// ReadFile implements the MigratorFS interface.
+func (m iofsMigratorFS) ReadFile(filename string) ([]byte, error) {
+	return fs.ReadFile(m.fsys, filename)
+}
+
+// Glob implements the MigratorFS interface.
+func (m iofsMigratorFS) Glob(pattern string) (matches []string, err error) {
+	return fs.Glob(m.fsys, pattern)
+}
diff --git a/migrate/iofs_test.go b/migrate/iofs_test.go
new file mode 100644
index 0000000..7e4c8b9
--- /dev/null
+++ b/migrate/iofs_test.go
@@ -0,0 +1,3 @@
+// +build go1.16
+
+package migrate