protobuf-c write 2

write2.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "addressbook.pb-c.h"


int main(int argc, char *argv[])
{
    Tutorial__AddressBook addrbook;
    uint8_t *buf;
    unsigned int len;

    tutorial__address_book__init(&addrbook);

    addrbook.n_people = 1;
    addrbook.people = (Tutorial__Person **)malloc(sizeof(Tutorial__Person*) * addrbook.n_people);

    int index = 0;
    addrbook.people[index] = (Tutorial__Person *)malloc(sizeof(Tutorial__Person));
    tutorial__person__init(addrbook.people[index]);
    addrbook.people[index]->id = 1;
    addrbook.people[index]->name = "yoshio";
    addrbook.people[index]->email = "yoshio@mail.com";

    addrbook.n_people++;
    addrbook.people = (Tutorial__Person **)realloc(addrbook.people, sizeof(Tutorial__Person*) * addrbook.n_people);

    index++;
    addrbook.people[index] = (Tutorial__Person *)malloc(sizeof(Tutorial__Person));
    tutorial__person__init(addrbook.people[index]);
    addrbook.people[index]->id = 1;
    addrbook.people[index]->name = "yoshida";
    addrbook.people[index]->email = "yoshida@mail.com";

    uint8_t pad[128];
    ProtobufCBufferSimple simple = PROTOBUF_C_BUFFER_SIMPLE_INIT(pad);
    tutorial__address_book__pack_to_buffer(&addrbook, (ProtobufCBuffer *)&simple);

    FILE *fp = fopen("addrbook", "wb");
    if (fp != NULL) {
        fwrite(simple.data, simple.len, 1, fp);
        fclose(fp);
    }
    PROTOBUF_C_BUFFER_SIMPLE_CLEAR(&simple);

    for (int lp = 0; lp < addrbook.n_people; lp++) {
        free(addrbook.people[lp]);
    }
    free(addrbook.people);
    return 0;
}