5 files changed, 115 insertions(+), 0 deletions(-)

A LICENSE
A README
A TODO
A fs2tar.go
A go.mod

@@ 1,19 @@
+Copyright (c) 2021 Evan J
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

@@ 1,27 @@
+Minimal example:
+```go
+package main
+
+import (
+	"bytes"
+	"embed"
+	"fmt"
+	"log"
+
+	"git.sr.ht/~evanj/fs2tar"
+)
+
+//go:embed main.go
+var sourceCode embed.FS
+
+func main() {
+	var (
+		buf bytes.Buffer
+		err = fs2tar.Do(sourceCode, &buf)
+	)
+	if err != nil {
+		log.Fatal(err)
+	}
+	fmt.Println(buf.String())
+}
+```

@@ 1,3 @@
+godoc
+test
+https://go.dev/about#best-practices-h2

@@ 1,63 @@
+package fs2tar
+
+import (
+	"archive/tar"
+	"io"
+	"io/fs"
+	"os"
+)
+
+func Do(fsys fs.FS, w io.Writer) error {
+	tw := tar.NewWriter(w)
+	defer tw.Close()
+
+	files, err := fs.Glob(fsys, "*")
+	if err != nil {
+		return err
+	}
+
+	for _, file := range files {
+		err := fs.WalkDir(fsys, file, func(path string, d fs.DirEntry, err error) error {
+			if err != nil {
+				return err
+			}
+
+			if d.IsDir() {
+				return nil
+			}
+
+			info, err := d.Info()
+			if err != nil {
+				return err
+			}
+
+			return appendfile(tw, path, info)
+		})
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func appendfile(tw *tar.Writer, path string, info fs.FileInfo) error {
+	file, err := os.Open(path)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	err = tw.WriteHeader(&tar.Header{
+		Name:    path,
+		Mode:    int64(info.Mode()),
+		Size:    info.Size(),
+		ModTime: info.ModTime(),
+	})
+	if err != nil {
+		return err
+	}
+
+	_, err = io.Copy(tw, file)
+	return err
+}

@@ 1,3 @@
+module git.sr.ht/~evanj/fs2tar
+
+go 1.16