init/action_parser.cpp

/*
 * Copyright (C) 2018 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "action_parser.h"

#include <android-base/strings.h>

using android::base::StartsWith;

namespace android {
namespace init {

Result<Success> ActionParser::ParseSection(std::vector<std::string>&& args,
                                           const std::string& filename, int line) {
    std::vector<std::string> triggers(args.begin() + 1, args.end());
    if (triggers.size() < 1) {
        return Error() << "Actions must have a trigger";
    }

    Subcontext* action_subcontext = nullptr;
    if (subcontexts_) {
        for (auto& subcontext : *subcontexts_) {
            if (StartsWith(filename, subcontext.path_prefix())) {
                action_subcontext = &subcontext;
                break;
            }
        }
    }

    auto action = std::make_unique<Action>(false, action_subcontext, filename, line);

    if (auto result = action->InitTriggers(triggers); !result) {
        return Error() << "InitTriggers() failed: " << result.error();
    }

    action_ = std::move(action);
    return Success();
}

Result<Success> ActionParser::ParseLineSection(std::vector<std::string>&& args, int line) {
    return action_ ? action_->AddCommand(std::move(args), line) : Success();
}

Result<Success> ActionParser::EndSection() {
    if (action_ && action_->NumCommands() > 0) {
        action_manager_->AddAction(std::move(action_));
    }

    return Success();
}

}  // namespace init
}  // namespace android