1 // Copyright 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 "remoting/base/capabilities.h" 6 7 #include <algorithm> 8 #include <vector> 9 10 #include "base/strings/string_util.h" 11 12 namespace remoting { 13 14 bool HasCapability(const std::string& capabilities, const std::string& key) { 15 std::vector<std::string> caps; 16 Tokenize(capabilities, " ", &caps); 17 return std::find(caps.begin(), caps.end(), key) != caps.end(); 18 } 19 20 std::string IntersectCapabilities(const std::string& client_capabilities, 21 const std::string& host_capabilities) { 22 std::vector<std::string> client_caps; 23 Tokenize(client_capabilities, " ", &client_caps); 24 std::sort(client_caps.begin(), client_caps.end()); 25 26 std::vector<std::string> host_caps; 27 Tokenize(host_capabilities, " ", &host_caps); 28 std::sort(host_caps.begin(), host_caps.end()); 29 30 std::vector<std::string> result(std::min(client_caps.size(), 31 host_caps.size())); 32 std::vector<std::string>::iterator end = 33 std::set_intersection(client_caps.begin(), 34 client_caps.end(), 35 host_caps.begin(), 36 host_caps.end(), 37 result.begin()); 38 if (end != result.end()) 39 result.erase(end, result.end()); 40 41 return JoinString(result, " "); 42 } 43 44 } // namespace remoting 45
