/*
* Note: amessage__pack and amessage__unpack will allocate memory from Heap,
* please remember to free them.
*/
void pack_to_file(int argc, char *argv[])
{
AMessage msg = AMESSAGE__INIT; // AMessage
void *buf; // Buffer to store serialized data
unsigned len; // Length of serialized data
FILE *fp = NULL;
msg.a = atoi(argv[1]);
if (argc == 3) {
msg.has_b = 1;
msg.b = atoi(argv[2]);
}
len = amessage__get_packed_size(&msg);
buf = malloc(len);
amessage__pack(&msg, buf);
fprintf(stderr, "Writing %d serialized bytes\n", len); // See the length of message
if (NULL == (fp = fopen(FILE_NAME, "w"))) {
fprintf(stderr, "fopen failed");
exit(-1);
}
fwrite(buf, len, 1, fp);
fclose(fp);
fwrite(buf, len, 1, stdout); // Write to stdout to allow direct command line piping
free(buf); // Free the allocated serialized buffer
}
int main(int argc, const char *argv[])
{
AMessage msg = AMESSAGE__INIT;
void *buf;
unsigned len;
char test[1000] = {'\0'};
msg.a = atoi(argv[1]);
len = amessage__get_packed_size(&msg);
buf = malloc(len);
amessage__pack(&msg, buf);
printf("%d\n", len);
fwrite(buf, len, 1, stdout);
free(buf);
return 0;
}
