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BSON_WRITER_T(3) libbson BSON_WRITER_T(3) Bulk BSON serialization Abstraction SYNOPSIS #include <bson/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 dynami- cally 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/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; } AUTHOR MongoDB, Inc COPYRIGHT 2009-present, MongoDB, Inc. 1.30.2 Apr 12, 2025 BSON_WRITER_T(3)
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