examples/celix-examples/readme_cxx_examples/src/MyCShellCommandProviderBundleActivator.cc

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 "celix/BundleActivator.h"
#include "celix_shell_command.h"

struct MyCShellCommand : public celix_shell_command {
    explicit MyCShellCommand(std::shared_ptr<celix::BundleContext> _ctx) : celix_shell_command(), ctx{std::move(_ctx)} {
        handle = this;
        executeCommand = [] (void *handle, const char* commandLine, FILE* outStream, FILE* /*errorStream*/) -> bool {
            auto* cmdProvider = static_cast<MyCShellCommand*>(handle);
            fprintf(outStream, "Hello from bundle %s with command line '%s'\n", cmdProvider->ctx->getBundle().getName().c_str(), commandLine);
            return true;
        };
    }

    const std::shared_ptr<celix::BundleContext> ctx;
};

class MyCShellCommandProviderBundleActivator {
public:
    explicit MyCShellCommandProviderBundleActivator(const std::shared_ptr<celix::BundleContext>&  ctx) {
        auto shellCmd = std::make_shared<MyCShellCommand>(ctx);
        cmdShellRegistration = ctx->registerService<celix_shell_command>(std::move(shellCmd), CELIX_SHELL_COMMAND_SERVICE_NAME)
                .addProperty(CELIX_SHELL_COMMAND_NAME, "MyCCommand")
                .setUnregisterAsync(false)
                .build();
    }
private:
    //NOTE when celix::ServiceRegistration goes out of scope the underlining service will be un-registered
    std::shared_ptr<celix::ServiceRegistration> cmdShellRegistration{};
};

CELIX_GEN_CXX_BUNDLE_ACTIVATOR(MyCShellCommandProviderBundleActivator)