Bump google.golang.org/api

vendor/github.com/google/martian/querystring/query_string_modifier.go

@@ -0,0 +1,76 @@
+// 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 querystring contains a modifier to rewrite query strings in a request.
+package querystring
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"github.com/google/martian"
+	"github.com/google/martian/parse"
+)
+
+func init() {
+	parse.Register("querystring.Modifier", modifierFromJSON)
+}
+
+type modifier struct {
+	key, value string
+}
+
+type modifierJSON struct {
+	Name  string               `json:"name"`
+	Value string               `json:"value"`
+	Scope []parse.ModifierType `json:"scope"`
+}
+
+// ModifyRequest modifies the query string of the request with the given key and value.
+func (m *modifier) ModifyRequest(req *http.Request) error {
+	query := req.URL.Query()
+	query.Set(m.key, m.value)
+	req.URL.RawQuery = query.Encode()
+
+	return nil
+}
+
+// NewModifier returns a request modifier that will set the query string
+// at key with the given value. If the query string key already exists all
+// values will be overwritten.
+func NewModifier(key, value string) martian.RequestModifier {
+	return &modifier{
+		key:   key,
+		value: value,
+	}
+}
+
+// modifierFromJSON takes a JSON message as a byte slice and returns
+// a querystring.modifier and an error.
+//
+// Example JSON:
+// {
+//  "name": "param",
+//  "value": "true",
+//  "scope": ["request", "response"]
+// }
+func modifierFromJSON(b []byte) (*parse.Result, error) {
+	msg := &modifierJSON{}
+
+	if err := json.Unmarshal(b, msg); err != nil {
+		return nil, err
+	}
+
+	return parse.NewResult(NewModifier(msg.Name, msg.Value), msg.Scope)
+}