Moving getenv to separate package

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

2 files changed, 50 insertions, 0 deletions

diff --git a/funcs/env.go b/funcs/env.go
new file mode 100644
index 00000000..40c10ff9
--- /dev/null
+++ b/funcs/env.go
@@ -0,0 +1,34 @@
+package funcs
+
+import (
+	"sync"
+
+	"github.com/hairyhenderson/gomplate/env"
+)
+
+var (
+	ef     *EnvFuncs
+	efInit sync.Once
+)
+
+// EnvNS - the Env namespace
+func EnvNS() *EnvFuncs {
+	efInit.Do(func() { ef = &EnvFuncs{} })
+	return ef
+}
+
+// AddEnvFuncs -
+func AddEnvFuncs(f map[string]interface{}) {
+	f["env"] = EnvNS
+
+	// global aliases - for backwards compatibility
+	f["getenv"] = EnvNS().Getenv
+}
+
+// EnvFuncs -
+type EnvFuncs struct{}
+
+// Getenv -
+func (f *EnvFuncs) Getenv(key string, def ...string) string {
+	return env.Getenv(key, def...)
+}
diff --git a/funcs/env_test.go b/funcs/env_test.go
new file mode 100644
index 00000000..95db230b
--- /dev/null
+++ b/funcs/env_test.go
@@ -0,0 +1,16 @@
+package funcs
+
+import (
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestEnvGetenv(t *testing.T) {
+	ef := &EnvFuncs{}
+	expected := os.Getenv("USER")
+	assert.Equal(t, expected, ef.Getenv("USER"))
+
+	assert.Equal(t, "foo", ef.Getenv("bogusenvvar", "foo"))
+}