支持所有常用编程语https://capnproto.org/GitHub - capnproto/capnproto: Capn Proto serialization/RPC system - core tools and C libraryhttps://capnproto.org/capnproto-c-win32-1.0.2.zip常用命令capnp helpcapnp compile -oc myschema.capnpcapnp decode myschema.capnp MyType message.bin message.txtcapnp encode myschema.capnp MyType message.txt message.bincapnp eval myschema.capnp myConstantmyschema.capnp:0xa8712255ec118b18;struct Person {id 0 :UInt32;name 1 :Text;email 2 :Text;phones 3 :List(PhoneNumber);struct PhoneNumber {number 0 :Text;type 1 :Type;enum Type {mobile 0;home 1;work 2;}}employment :union {unemployed 4 :Void;employer 5 :Text;school 6 :Text;selfEmployed 7 :Void;# We assume that a person is only one of these.}}struct AddressBook {people 0 :List(Person);}示例代码#include myschema.capnp.h#include capnp/message.h#include capnp/serialize-packed.h#include iostreamvoid writeAddressBook(int fd) {::capnp::MallocMessageBuilder message;AddressBook::Builder addressBook message.initRootAddressBook();::capnp::ListPerson::Builder people addressBook.initPeople(2);Person::Builder alice people[0];alice.setId(123);alice.setName(Alice);alice.setEmail(aliceexample.com);// Type shown for explanation purposes; normally youd use auto.::capnp::ListPerson::PhoneNumber::Builder alicePhones alice.initPhones(1);alicePhones[0].setNumber(555-1212);alicePhones[0].setType(Person::PhoneNumber::Type::MOBILE);alice.getEmployment().setSchool(MIT);Person::Builder bob people[1];bob.setId(456);bob.setName(Bob);bob.setEmail(bobexample.com);auto bobPhones bob.initPhones(2);bobPhones[0].setNumber(555-4567);bobPhones[0].setType(Person::PhoneNumber::Type::HOME);bobPhones[1].setNumber(555-7654);bobPhones[1].setType(Person::PhoneNumber::Type::WORK);bob.getEmployment().setUnemployed();writePackedMessageToFd(fd, message);}void printAddressBook(int fd) {::capnp::PackedFdMessageReader message(fd);AddressBook::Reader addressBook message.getRootAddressBook();for (Person::Reader person : addressBook.getPeople()) {std::cout person.getName().cStr() : person.getEmail().cStr() std::endl;for (Person::PhoneNumber::Reader phone : person.getPhones()) {const char* typeName UNKNOWN;switch (phone.getType()) {case Person::PhoneNumber::Type::MOBILE: typeName mobile; break;case Person::PhoneNumber::Type::HOME: typeName home; break;case Person::PhoneNumber::Type::WORK: typeName work; break;}std::cout typeName phone: phone.getNumber().cStr() std::endl;}Person::Employment::Reader employment person.getEmployment();switch (employment.which()) {case Person::Employment::UNEMPLOYED:std::cout unemployed std::endl;break;case Person::Employment::EMPLOYER:std::cout employer: employment.getEmployer().cStr() std::endl;break;case Person::Employment::SCHOOL:std::cout student at: employment.getSchool().cStr() std::endl;break;case Person::Employment::SELF_EMPLOYED:std::cout self-employed std::endl;break;}}}void test() {auto file fopen(example.bin, wt);if (!file)return;int fd fileno(file); //如果是W 这里文件被清空的影响writeAddressBook(fd);fclose(file);fflush(file);file fopen(example.bin, rb);fd fileno(file);printAddressBook(fd);fclose(file);}运行输出Alice: aliceexample.commobile phone: 555-1212student at: MITBob: bobexample.comhome phone: 555-4567work phone: 555-7654unemployed其它类似参考GitHub - protocolbuffers/protobuf: Protocol Buffers - Googles data interchange formatevanw (Evan Wallace) · GitHub创作不易小小的支持一下吧