1BSON_WRITER_T(3)                    libbson                   BSON_WRITER_T(3)
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NAME

6       bson_writer_t - bson_writer_t
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8       Bulk BSON serialization Abstraction
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SYNOPSIS

11          #include <bson/bson.h>
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13          typedef struct _bson_writer_t bson_writer_t;
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15          bson_writer_t *
16          bson_writer_new (uint8_t **buf,
17                           size_t *buflen,
18                           size_t offset,
19                           bson_realloc_func realloc_func,
20                           void *realloc_func_ctx);
21          void
22          bson_writer_destroy (bson_writer_t *writer);
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DESCRIPTION

25       The bson_writer_t API provides an abstraction for serializing many BSON
26       documents to a single memory region. The memory region may  be  dynami‐
27       cally  allocated  and re-allocated as more memory is demanded. This can
28       be useful when building network packets from a high-level language. For
29       example,  you  can  serialize  a Python Dictionary directly to a single
30       buffer destined for a TCP packet.
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EXAMPLE

33          #include <bson/bson.h>
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35          int
36          main (int argc, char *argv[])
37          {
38             bson_writer_t *writer;
39             uint8_t *buf = NULL;
40             size_t buflen = 0;
41             bson_t *doc;
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43             writer = bson_writer_new (&buf, &buflen, 0, bson_realloc_ctx, NULL);
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45             for (i = 0; i < 1000; i++) {
46                bson_writer_begin (writer, &doc);
47                BSON_APPEND_INT32 (&doc, "i", i);
48                bson_writer_end (writer);
49             }
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51             bson_writer_destroy (writer);
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53             bson_free (buf);
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55             return 0;
56          }
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AUTHOR

59       MongoDB, Inc
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62       2017-present, MongoDB, Inc
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671.17.4                           Feb 04, 2021                 BSON_WRITER_T(3)
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