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/*
* Copyright 2022-present MongoDB, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef MONGOCRYPT_WRITER_PRIVATE_H
#define MONGOCRYPT_WRITER_PRIVATE_H
#include "mongocrypt-buffer-private.h"
#include <stdint.h>
#include <stdlib.h>
/**
* A non-owning forward-only cursor api to write to a buffer.
*
* Tracks length of buffer and current position of buffer. parser_name is
* typically __func__ to provide useful error messages automatically.
*
* All numbers are written as little endian.
*/
struct _mc_writer_t {
uint8_t *ptr;
uint64_t pos;
uint64_t len;
const char *parser_name;
};
typedef struct _mc_writer_t mc_writer_t;
void mc_writer_init(mc_writer_t *writer, uint8_t *ptr, uint64_t len, const char *parser_name);
void mc_writer_init_from_buffer(mc_writer_t *writer, _mongocrypt_buffer_t *buf, const char *parser_name);
mc_writer_t *mc_writer_new(uint8_t *ptr, uint64_t len, const char *parser_name);
void mc_writer_destroy(mc_writer_t *writer);
bool mc_writer_write_u8(mc_writer_t *writer, const uint8_t value, mongocrypt_status_t *status);
bool mc_writer_write_u32(mc_writer_t *writer, const uint32_t value, mongocrypt_status_t *status);
bool mc_writer_write_u64(mc_writer_t *writer, const uint64_t value, mongocrypt_status_t *status);
bool mc_writer_write_buffer(mc_writer_t *writer,
const _mongocrypt_buffer_t *buf,
uint64_t length,
mongocrypt_status_t *status);
bool mc_writer_write_uuid_buffer(mc_writer_t *writer, const _mongocrypt_buffer_t *buf, mongocrypt_status_t *status);
bool mc_writer_write_prfblock_buffer(mc_writer_t *writer, const _mongocrypt_buffer_t *buf, mongocrypt_status_t *status);
#endif /* MONGOCRYPT_READER_PRIVATE_H */
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