binary_log_funcs.h

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/*
   Copyright (c) 2014, 2024, Oracle and/or its affiliates.
 
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   it under the terms of the GNU General Public License, version 2.0,
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/*
 * Functions exported from this package.
 */
 
#ifndef MYSQL_BINLOG_EVENT_EXPORT_BINARY_LOG_FUNCS_H
#define MYSQL_BINLOG_EVENT_EXPORT_BINARY_LOG_FUNCS_H
 
#include <stdint.h>
#include "field_types.h"  // enum_field_types
 
#ifdef __cplusplus
extern "C" {
#endif
 
unsigned int my_time_binary_length(unsigned int dec);
unsigned int my_datetime_binary_length(unsigned int dec);
unsigned int my_timestamp_binary_length(unsigned int dec);
 
/**
  This helper function calculates the size in bytes of a particular field in a
  row type event as defined by the field_ptr and metadata_ptr arguments.
 
  @param col Field type code
  @param master_data The field data
  @param metadata The field metadata
 
  @note We need the actual field data because the string field size is not
  part of the meta data. :(
 
  @return The size in bytes of a particular field
*/
uint32_t calc_field_size(unsigned char col, const unsigned char *master_data,
                         unsigned int metadata);
 
/**
   Compute the maximum display length of a field.
 
   @param sql_type Type of the field
   @param metadata The metadata from the master for the field.
   @return Maximum length of the field in bytes.
 */
unsigned int max_display_length_for_field(enum_field_types sql_type,
                                          unsigned int metadata);
 
/**
   Returns the size of array to hold a binary representation of a decimal
   @param  precision  number of significant digits in a particular radix R
                      where R is either 2 or 10.
   @param  scale      to what position to round.
   @return  size in bytes
*/
int decimal_binary_size(int precision, int scale);
 
#ifdef __cplusplus
}
#endif  // __cplusplus
 
#endif  // MYSQL_BINLOG_EVENT_EXPORT_BINARY_LOG_FUNCS_H