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| 1 // Copyright 2008-2009 Google Inc. | |
| 2 // | |
| 3 // Licensed under the Apache License, Version 2.0 (the "License"); | |
| 4 // you may not use this file except in compliance with the License. | |
| 5 // You may obtain a copy of the License at | |
| 6 // | |
| 7 // http://www.apache.org/licenses/LICENSE-2.0 | |
| 8 // | |
| 9 // Unless required by applicable law or agreed to in writing, software | |
| 10 // distributed under the License is distributed on an "AS IS" BASIS, | |
| 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 12 // See the License for the specific language governing permissions and | |
| 13 // limitations under the License. | |
| 14 // ======================================================================== | |
| 15 | |
| 16 | |
| 17 #ifndef OMAHA_BASE_COMMAND_LINE_VALIDATOR_H__ | |
| 18 #define OMAHA_BASE_COMMAND_LINE_VALIDATOR_H__ | |
| 19 | |
| 20 #include <windows.h> | |
| 21 #include <atlstr.h> | |
| 22 #include <map> | |
| 23 #include <vector> | |
| 24 #include "base/basictypes.h" | |
| 25 | |
| 26 namespace omaha { | |
| 27 | |
| 28 class CommandLineParser; | |
| 29 | |
| 30 // This class allows creation of scenarios for command line combinations and | |
| 31 // then provides a mechanism to validate a command line against those scenarios | |
| 32 // to determine if there's a match. | |
| 33 class CommandLineValidator { | |
| 34 public: | |
| 35 class ScenarioParameter { | |
| 36 public: | |
| 37 ScenarioParameter(const TCHAR* switch_name, int num_required_parameters) | |
| 38 : switch_name_(switch_name), | |
| 39 num_required_parameters_(num_required_parameters) { | |
| 40 } | |
| 41 ~ScenarioParameter() {} | |
| 42 | |
| 43 CString switch_name_; | |
| 44 int num_required_parameters_; | |
| 45 | |
| 46 private: | |
| 47 DISALLOW_EVIL_CONSTRUCTORS(ScenarioParameter); | |
| 48 }; | |
| 49 | |
| 50 typedef std::vector<ScenarioParameter*> ScenarioParameterVector; | |
| 51 typedef ScenarioParameterVector::iterator ScenarioParameterVectorIter; | |
| 52 typedef ScenarioParameterVector::const_iterator | |
| 53 ScenarioParameterVectorConstIter; | |
| 54 | |
| 55 struct ScenarioParameters { | |
| 56 public: | |
| 57 ScenarioParameterVector required; | |
| 58 ScenarioParameterVector optional; | |
| 59 }; | |
| 60 | |
| 61 typedef std::map<CString, ScenarioParameters> MapScenarios; | |
| 62 typedef MapScenarios::iterator MapScenariosIter; | |
| 63 typedef MapScenarios::const_iterator MapScenariosConstIter; | |
| 64 | |
| 65 CommandLineValidator(); | |
| 66 ~CommandLineValidator(); | |
| 67 | |
| 68 void Clear(); | |
| 69 | |
| 70 // Parses a command line rule and builds a scenario from it. Returns a | |
| 71 // generated scenario name. | |
| 72 // Rules have required and optional parameters. An example of a rule is: | |
| 73 // "gu.exe /install <extraargs> [/oem [/appargs <appargs> [/silent" | |
| 74 HRESULT CreateScenarioFromCmdLine(const CString& command_line, | |
| 75 CString* scenario_name); | |
| 76 | |
| 77 // Validates a CommandLineParser against all scenarios. If a match, returns | |
| 78 // S_OK and the scenario_name. Fails if not a match. | |
| 79 // command_line_parser must already be compiled before calling. | |
| 80 HRESULT Validate(const CommandLineParser& command_line_parser, | |
| 81 CString* scenario_name) const; | |
| 82 | |
| 83 // Creates a scenario by name. | |
| 84 HRESULT CreateScenario(const CString& scenario_name); | |
| 85 | |
| 86 // Adds a switch and its parameter count to an existing scenario. | |
| 87 HRESULT AddScenarioParameter(const CString& scenario_name, | |
| 88 const CString& switch_name, | |
| 89 int num_required_parameters); | |
| 90 HRESULT AddOptionalScenarioParameter(const CString& scenario_name, | |
| 91 const CString& switch_name, | |
| 92 int num_required_parameters); | |
| 93 | |
| 94 private: | |
| 95 bool DoesScenarioMatch(const CommandLineParser& command_line_parser, | |
| 96 const ScenarioParameters& scenario_parameters) const; | |
| 97 | |
| 98 int scenario_sequence_number_; | |
| 99 MapScenarios scenarios_; | |
| 100 DISALLOW_EVIL_CONSTRUCTORS(CommandLineValidator); | |
| 101 }; | |
| 102 | |
| 103 } // namespace omaha | |
| 104 | |
| 105 #endif // OMAHA_BASE_COMMAND_LINE_VALIDATOR_H__ | |
| 106 | |
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