NAME¶
bson_writer_t - Bulk BSON serialization Abstraction
SYNOPSIS¶
#include <bson.h>
typedef struct _bson_writer_t bson_writer_t;
bson_writer_t *bson_writer_new (uint8_t **buf,
size_t *buflen,
size_t offset,
bson_realloc_func realloc_func,
void *realloc_func_ctx);
void bson_writer_destroy (bson_writer_t *writer);
DESCRIPTION¶
The bson_writer_t API provides an abstraction for serializing many BSON
documents to a single memory region. The memory region may be dynamically
allocated and re‐allocated as more memory is demanded. This can be
useful when building network packets from a high‐level language. For
example, you can serialize a Python Dictionary directly to a single buffer
destined for a TCP packet.
EXAMPLE¶
#include <bson.h>
int main (int argc, char *argv[])
{
bson_writer_t *writer;
uint8_t *buf = NULL;
size_t buflen = 0;
bson_t *doc;
writer = bson_writer_new (&buf, &buflen, 0, bson_realloc_ctx, NULL);
for (i = 0; i < 1000; i++) {
bson_writer_begin (writer, &doc);
BSON_APPEND_INT32 (&doc, "i", i);
bson_writer_end (writer);
}
bson_writer_destroy (writer);
bson_free (buf);
return 0;
}
