componentversion.h

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class NOVTABLE componentversion : public service_base {
public:
    virtual void get_file_name(pfc::string_base & out)=0;
    virtual void get_component_name(pfc::string_base & out)=0;
    virtual void get_component_version(pfc::string_base & out)=0;
    virtual void get_about_message(pfc::string_base & out)=0;//about message uses "\n" for line separators

    FB2K_MAKE_SERVICE_INTERFACE_ENTRYPOINT(componentversion);
};

class componentversion_impl_simple : public componentversion {
    const char * name,*version,*about;
public:
    //do not derive/override
    virtual void get_file_name(pfc::string_base & out) {out.set_string(core_api::get_my_file_name());}
    virtual void get_component_name(pfc::string_base & out) {out.set_string(name?name:"");}
    virtual void get_component_version(pfc::string_base & out) {out.set_string(version?version:"");}
    virtual void get_about_message(pfc::string_base & out) {out.set_string(about?about:"");}
    explicit componentversion_impl_simple(const char * p_name,const char * p_version,const char * p_about) : name(p_name), version(p_version), about(p_about ? p_about : "") {}
};

class componentversion_impl_copy : public componentversion {
    pfc::string8 name,version,about;
public:
    //do not derive/override
    virtual void get_file_name(pfc::string_base & out) {out.set_string(core_api::get_my_file_name());}
    virtual void get_component_name(pfc::string_base & out) {out.set_string(name);}
    virtual void get_component_version(pfc::string_base & out) {out.set_string(version);}
    virtual void get_about_message(pfc::string_base & out) {out.set_string(about);}
    explicit componentversion_impl_copy(const char * p_name,const char * p_version,const char * p_about) : name(p_name), version(p_version), about(p_about ? p_about : "") {}
};

typedef service_factory_single_transparent_t<componentversion_impl_simple> __componentversion_impl_simple_factory;
typedef service_factory_single_transparent_t<componentversion_impl_copy> __componentversion_impl_copy_factory;

class componentversion_impl_simple_factory : public __componentversion_impl_simple_factory {
public:
    componentversion_impl_simple_factory(const char * p_name,const char * p_version,const char * p_about) : __componentversion_impl_simple_factory(p_name,p_version,p_about) {}
};

class componentversion_impl_copy_factory : public __componentversion_impl_copy_factory {
public:
    componentversion_impl_copy_factory(const char * p_name,const char * p_version,const char * p_about) : __componentversion_impl_copy_factory(p_name,p_version,p_about) {}
};

#define DECLARE_COMPONENT_VERSION(NAME,VERSION,ABOUT) \
    namespace {class componentversion_myimpl : public componentversion { public: componentversion_myimpl() {PFC_ASSERT( ABOUT );} \
        void get_file_name(pfc::string_base & out) {out = core_api::get_my_file_name();}    \
        void get_component_name(pfc::string_base & out) {out = NAME;}   \
        void get_component_version(pfc::string_base & out) {out = VERSION;} \
        void get_about_message(pfc::string_base & out) {out = ABOUT;}   \
        }; static service_factory_single_t<componentversion_myimpl> g_componentversion_myimpl_factory; }
    // static componentversion_impl_simple_factory g_componentversion_service(NAME,VERSION,ABOUT);

#define DECLARE_COMPONENT_VERSION_COPY(NAME,VERSION,ABOUT) \
    static componentversion_impl_copy_factory g_componentversion_service(NAME,VERSION,ABOUT);


class component_installation_validator : public service_base {
public:
    virtual bool is_installed_correctly() = 0;

    static bool test_my_name(const char * fn);
    static bool have_other_file(const char * fn);

    FB2K_MAKE_SERVICE_INTERFACE_ENTRYPOINT(component_installation_validator)
};

class component_installation_validator_filename : public component_installation_validator {
public:
    component_installation_validator_filename(const char * dllName) : m_dllName(dllName) {}
    bool is_installed_correctly() {
        return test_my_name(m_dllName);
    }
private:
    const char * const m_dllName;
};

#define VALIDATE_COMPONENT_FILENAME(FN) \
    static service_factory_single_t<component_installation_validator_filename> g_component_installation_validator_filename(FN);