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main.c
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main.c
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#include <stdio.h>
#include <stdint.h>
#include "c-tlv.h"
struct person;
typedef struct person person_t;
struct person {
char * name;
uint32_t age;
uint32_t nkids;
person_t * kids;
};
message_t * person_gen_msg(person_t * person)
{
message_t * msg = NULL;
message_t * kids = NULL;
message_t * kid = NULL;
int index = 0;
msg = msg_init(4);
if (NULL == msg) {
return NULL;
}
kids = msg_init(person->nkids);
if (NULL == kids) {
msg_free(msg);
return NULL;
}
for (; index < person->nkids; index++) {
kid = person_gen_msg(&(person->kids[index]));
if (NULL == kid) {
msg_free(kids);
msg_free(msg);
return NULL;
}
msg_append(kids, TLV_TYPE_MSG, ID_PERSON, kid, MSG_SIZE(kid));
}
msg_append(msg, TLV_TYPE_BYTES, ID_PERSON_NAME, person->name, (uint16_t)strlen(person->name));
msg_append(msg, TLV_TYPE_UINT32, ID_PERSON_AGE, &(person->age), sizeof(person->age));
msg_append(msg, TLV_TYPE_UINT32, ID_PERSON_NKIDS, &(person->nkids), sizeof(person->nkids));
msg_append(msg, TLV_TYPE_MSG, ID_PERSON_KIDS, kids, MSG_SIZE(kids));
return msg;
}
int person_init(person_t * person)
{
memset(person, 0, sizeof(person_t));
person->name = NULL;
person->nkids = 0;
person->kids = NULL;
person->age = 0;
return 0;
}
int dump_to_file(uint8_t * buf, uint32_t size, char * name)
{
FILE * f = NULL;
int write_bytes = 0;
f = fopen(name, "wb");
write_bytes = fwrite(buf, size, 1, f);
fclose(f);
return write_bytes;
}
int read_from_file(uint8_t * buf, uint32_t size, char * name)
{
FILE * f = NULL;
int read_bytes = 0;
memset(buf, 0, size);
f = fopen(name, "rb");
read_bytes = fread(buf, size, 1, f);
fclose(f);
return read_bytes;
}
int main()
{
person_t myperson;
person_t kids[2];
uint8_t packed[1500] = {0};
uint32_t packed_size = sizeof(packed);
message_t * msg = NULL;
person_init(&kids[0]);
kids[0].age = 3;
kids[0].name = "kid0";
person_init(&kids[1]);
kids[1].age = 5;
kids[1].name = "kid1";
person_init(&myperson);
myperson.name = "goniz";
myperson.age = 21;
myperson.kids = kids;
myperson.nkids = 2;
msg = person_gen_msg(&myperson);
msg_pprint(msg, 0);
msg_pack(msg, packed, &packed_size);
msg_free(msg);
dump_to_file(packed, packed_size, "/tmp/output");
return 0;
}