b7349902a9
Create a Parser class that uses multiple SectionParser interfaces to handle parsing the different sections of an init rc. Create an ActionParser and ServiceParser that implement SectionParser and parse the sections corresponding to Action and Service classes. Remove the legacy keyword structure and replace it with std::map's that map keyword -> (minimum args, maximum args, function pointer) for Commands and Service Options. Create an ImportParser that implements SectionParser and handles the import 'section'. Clean up the unsafe memory handling of the Action class by using std::unique_ptr. Change-Id: Ic5ea5510cb956dbc3f78745a35096ca7d6da7085
133 lines
4.2 KiB
C++
133 lines
4.2 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _INIT_ACTION_H
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#define _INIT_ACTION_H
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#include <map>
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#include <queue>
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#include <string>
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#include <vector>
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#include "builtins.h"
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#include "init_parser.h"
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#include "keyword_map.h"
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class Command {
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public:
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Command(BuiltinFunction f, const std::vector<std::string>& args,
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const std::string& filename, int line);
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int InvokeFunc() const;
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std::string BuildCommandString() const;
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std::string BuildSourceString() const;
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private:
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BuiltinFunction func_;
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std::vector<std::string> args_;
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std::string filename_;
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int line_;
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};
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class Action {
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public:
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Action(bool oneshot = false);
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bool AddCommand(const std::vector<std::string>& args,
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const std::string& filename, int line, std::string* err);
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void AddCommand(BuiltinFunction f,
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const std::vector<std::string>& args,
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const std::string& filename = "", int line = 0);
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void CombineAction(const Action& action);
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bool InitTriggers(const std::vector<std::string>& args, std::string* err);
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bool InitSingleTrigger(const std::string& trigger);
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std::size_t NumCommands() const;
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void ExecuteOneCommand(std::size_t command) const;
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void ExecuteAllCommands() const;
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bool CheckEventTrigger(const std::string& trigger) const;
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bool CheckPropertyTrigger(const std::string& name,
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const std::string& value) const;
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bool TriggersEqual(const Action& other) const;
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std::string BuildTriggersString() const;
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void DumpState() const;
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bool oneshot() const { return oneshot_; }
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static void set_function_map(const KeywordMap<BuiltinFunction>* function_map) {
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function_map_ = function_map;
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}
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private:
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void ExecuteCommand(const Command& command) const;
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bool CheckPropertyTriggers(const std::string& name = "",
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const std::string& value = "") const;
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bool ParsePropertyTrigger(const std::string& trigger, std::string* err);
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std::map<std::string, std::string> property_triggers_;
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std::string event_trigger_;
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std::vector<Command> commands_;
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bool oneshot_;
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static const KeywordMap<BuiltinFunction>* function_map_;
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};
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class Trigger {
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public:
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virtual ~Trigger() { }
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virtual bool CheckTriggers(const Action& action) const = 0;
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};
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class ActionManager {
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public:
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static ActionManager& GetInstance();
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void AddAction(std::unique_ptr<Action> action);
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void QueueEventTrigger(const std::string& trigger);
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void QueuePropertyTrigger(const std::string& name, const std::string& value);
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void QueueAllPropertyTriggers();
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void QueueBuiltinAction(BuiltinFunction func, const std::string& name);
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void ExecuteOneCommand();
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bool HasMoreCommands() const;
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void DumpState() const;
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private:
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ActionManager();
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ActionManager(ActionManager const&) = delete;
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void operator=(ActionManager const&) = delete;
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std::vector<std::unique_ptr<Action>> actions_;
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std::queue<std::unique_ptr<Trigger>> trigger_queue_;
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std::queue<const Action*> current_executing_actions_;
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std::size_t current_command_;
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};
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class ActionParser : public SectionParser {
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public:
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ActionParser() : action_(nullptr) {
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}
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bool ParseSection(const std::vector<std::string>& args,
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std::string* err) override;
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bool ParseLineSection(const std::vector<std::string>& args,
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const std::string& filename, int line,
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std::string* err) const override;
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void EndSection() override;
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void EndFile(const std::string&) override {
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}
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private:
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std::unique_ptr<Action> action_;
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};
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#endif
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