doc/bash completions autogeneration directory helper

cmd/genutils/genutils.go

@@ -0,0 +1,41 @@
+/*
+Copyright 2015 Google Inc. All rights reserved.
+
+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 genutils
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+func OutDir(path string) (string, error) {
+	outDir, err := filepath.Abs(path)
+	if err != nil {
+		return "", err
+	}
+
+	stat, err := os.Stat(outDir)
+	if err != nil {
+		return "", err
+	}
+
+	if !stat.IsDir() {
+		return "", fmt.Errorf("output directory %s is not a directory\n", outDir)
+	}
+	outDir = outDir + "/"
+	return outDir, nil
+}

cmd/genutils/genutils_test.go

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+/*
+Copyright 2015 Google Inc. All rights reserved.
+
+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 genutils
+
+import (
+	"testing"
+)
+
+func TestValidDir(t *testing.T) {
+	_, err := OutDir("./")
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestInvalidDir(t *testing.T) {
+	_, err := OutDir("./nondir")
+	if err == nil {
+		t.Fatal(err)
+	}
+}
+
+func TestNotDir(t *testing.T) {
+	_, err := OutDir("./genutils_test.go")
+	if err == nil {
+		t.Fatal(err)
+	}
+}