1 /* 2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef WEBRTC_VIDEO_ENGINE_TEST_AUTO_TEST_PRIMITIVES_ 12 #define WEBRTC_VIDEO_ENGINE_TEST_AUTO_TEST_PRIMITIVES_ 13 14 #include <stdlib.h> 15 16 #include <map> 17 #include <string> 18 #include <vector> 19 20 #include "gflags/gflags.h" 21 22 namespace webrtc { 23 24 class InputValidator; 25 class OverrideRegistry; 26 27 // This class handles general user input to the application. 28 class InputBuilder { 29 public: 30 // The input builder takes ownership of the validator (but not the 31 // override registry). 32 InputBuilder(const std::string& title, 33 const InputValidator* input_validator, 34 const OverrideRegistry& override_registry); 35 ~InputBuilder(); 36 37 // Ask the user for input, reads input from the input source and returns 38 // the answer. This method will keep asking the user until a correct answer 39 // is returned and is thereby guaranteed to return a response that is 40 // acceptable to the input validator. 41 // 42 // In some cases we will not actually ask the user for input, for instance 43 // if the --choose-defaults or --override flags are specified. See the 44 // definition of those flags in the .cc file for more information. 45 std::string AskForInput() const; 46 47 // Replaces the input source where we ask for input. Default is stdin. 48 InputBuilder& WithInputSource(FILE* input_source); 49 // Sets the input validator. The input builder takes ownership. If a default 50 // value has been set, it must be acceptable to this validator. 51 InputBuilder& WithInputValidator(const InputValidator* input_validator); 52 // Sets a default value if the user doesn't want to give input. This value 53 // must be acceptable to the input validator. 54 InputBuilder& WithDefault(const std::string& default_value); 55 // Prints additional info after the title. 56 InputBuilder& WithAdditionalInfo(const std::string& title); 57 58 private: 59 const std::string& GetOverride() const; 60 std::string ActuallyAskUser() const; 61 62 FILE* input_source_; 63 const InputValidator* input_validator_; 64 const OverrideRegistry& override_registry_; 65 std::string default_value_; 66 std::string title_; 67 std::string additional_info_; 68 }; 69 70 // Keeps track of overrides for any input points. Overrides are passed in the 71 // format Title 1=Value 1,Title 2=Value 2. Spaces are not trimmed anywhere. 72 class OverrideRegistry { 73 public: 74 OverrideRegistry(const std::string& overrides); 75 bool HasOverrideFor(const std::string& title) const; 76 const std::string& GetOverrideFor(const std::string& title) const; 77 private: 78 typedef std::map<std::string, std::string> OverrideMap; 79 OverrideMap overrides_; 80 }; 81 82 class InputValidator { 83 public: 84 virtual ~InputValidator() {} 85 86 virtual bool InputOk(const std::string& value) const = 0; 87 }; 88 89 // Ensures input is an integer between low and high (inclusive). 90 class IntegerWithinRangeValidator : public InputValidator { 91 public: 92 IntegerWithinRangeValidator(int low, int high) 93 : low_(low), high_(high) {} 94 95 bool InputOk(const std::string& input) const { 96 int value = atoi(input.c_str()); 97 // Note: atoi returns 0 on failure. 98 if (value == 0 && input.length() > 0 && input[0] != '0') 99 return false; // Probably bad input. 100 return value >= low_ && value <= high_; 101 } 102 103 private: 104 int low_; 105 int high_; 106 }; 107 108 std::vector<std::string> Split(const std::string& to_split, 109 const std::string& delimiter); 110 111 // Convenience method for creating an input builder. 112 InputBuilder TypedInput(const std::string& title); 113 114 } // namespace webrtc 115 116 #endif // WEBRTC_VIDEO_ENGINE_TEST_AUTO_TEST_PRIMITIVES_ 117
