1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "google_apis/drive/request_util.h" 6 7 #include <string> 8 9 namespace google_apis { 10 namespace util { 11 12 namespace { 13 14 // etag matching header. 15 const char kIfMatchHeaderPrefix[] = "If-Match: "; 16 17 } // namespace 18 19 const char kIfMatchAllHeader[] = "If-Match: *"; 20 GenerateIfMatchHeader(const std::string & etag)21std::string GenerateIfMatchHeader(const std::string& etag) { 22 return etag.empty() ? kIfMatchAllHeader : (kIfMatchHeaderPrefix + etag); 23 } 24 25 } // namespace util 26 } // namespace google_apis 27