add bash driver again

driver/bash/README.md

@@ -0,0 +1,7 @@
+# Bash Driver
+
+```
+-url="bash://"
+```
+
+### @TODO

driver/bash/bash.go

@@ -0,0 +1,26 @@
+package bash
+
+import (
+	"github.com/mattes/migrate/file"
+	_ "github.com/mattes/migrate/migrate/direction"
+)
+
+type Driver struct {
+}
+
+func (driver *Driver) Initialize(url string) error {
+	return nil
+}
+
+func (driver *Driver) FilenameExtension() string {
+	return "sh"
+}
+
+func (driver *Driver) Migrate(files file.Files, pipe chan interface{}) {
+	defer close(pipe)
+	return
+}
+
+func (driver *Driver) Version() (uint64, error) {
+	return uint64(0), nil
+}

driver/bash/bash_test.go

@@ -0,0 +1,9 @@
+package bash
+
+import (
+	"testing"
+)
+
+func TestFoobar(t *testing.T) {
+
+}

driver/driver.go

@@ -3,7 +3,7 @@ package driver
 import (
 	"errors"
 	"fmt"
-	// "github.com/mattes/migrate/driver/bash"
+	"github.com/mattes/migrate/driver/bash"
 	"github.com/mattes/migrate/driver/postgres"
 	"github.com/mattes/migrate/file"
 	neturl "net/url" // alias to allow `url string` func signature in New
@@ -31,13 +31,13 @@ func New(url string) (Driver, error) {
 			return nil, err
 		}
 		return d, nil
-	// case "bash":
+	case "bash":
-	// 	d := &bash.Driver{}
+		d := &bash.Driver{}
-	// 	verifyFilenameExtension("bash", d)
+		verifyFilenameExtension("bash", d)
-	// 	if err := d.Initialize(url); err != nil {
+		if err := d.Initialize(url); err != nil {
-	// 		return nil, err
+			return nil, err
-	// 	}
+		}
-	// 	return d, nil
+		return d, nil
 	default:
 		return nil, errors.New(fmt.Sprintf("Driver '%s' not found.", u.Scheme))
 	}