Helper to recursively return all files of a path and its subpaths

files.go

@@ -0,0 +1,26 @@
+package osutil
+
+import (
+	"os"
+	"path/filepath"
+)
+
+// FilesRecursive returns all files in a given path and its subpaths.
+func FilesRecursive(path string) (files []string, err error) {
+	var fs []string
+
+	err = filepath.Walk(path, func(path string, f os.FileInfo, err error) error {
+		if f.IsDir() {
+			return nil
+		}
+
+		fs = append(fs, path)
+
+		return err
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	return fs, nil
+}

files_test.go

@@ -0,0 +1,35 @@
+package osutil
+
+import (
+	"io/ioutil"
+	"os"
+	"sort"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestFilesRecursive(t *testing.T) {
+	path, err := ioutil.TempDir("", "os-util")
+	assert.NoError(t, err)
+
+	assert.NoError(t, os.MkdirAll(path+"/a/b", 0750))
+	assert.NoError(t, ioutil.WriteFile(path+"/c.txt", []byte("foobar"), 0640))
+	assert.NoError(t, ioutil.WriteFile(path+"/a/d.txt", []byte("foobar"), 0640))
+	assert.NoError(t, ioutil.WriteFile(path+"/a/b/e.txt", []byte("foobar"), 0640))
+
+	fs, err := FilesRecursive(path)
+	assert.NoError(t, err)
+
+	sort.Strings(fs)
+
+	assert.Equal(
+		t,
+		[]string{
+			path + "/a/b/e.txt",
+			path + "/a/d.txt",
+			path + "/c.txt",
+		},
+		fs,
+	)
+}