item_regexp_func.cc File Reference

Implementation of the regular expression function object. More...

#include "sql/item_regexp_func.h"
#include <optional>
#include "my_dbug.h"
#include "mysql_com.h"
#include "sql/item_func.h"
#include "sql/sql_class.h"
#include "sql/sql_lex.h"

Functions
static bool	ParseRegexpOptions (const std::string &options_string, bool case_sensitive_is_default, uint32_t *flags)
	Transforms a textual option string from the user to a bitmask of ICU flags. More...
static bool	is_binary_string (Item *item)
static bool	is_binary_compatible (Item *item)

Detailed Description

Implementation of the regular expression function object.

This file deals only with the function objects and their place in the Item hierarchy. All interactions with the regular expression library are done through a facade object, which is instantiated in fix_fields() and deleted in cleanup().

Function Documentation

is_binary_compatible()

static bool is_binary_compatible ( Item *  item )

static

is_binary_string()

static bool is_binary_string ( Item *  item )

static

ParseRegexpOptions()

static bool ParseRegexpOptions ( const std::string &  options_string, bool  case_sensitive_is_default, uint32_t *  flags  )

static

Transforms a textual option string from the user to a bitmask of ICU flags.

The match_parameter is a string of characters where each character controls some characteristic of the regular expression matching:

• ‘'c’means case-sensitive matching. -'i'means case-insensitive matching. -'m'activates multi-line matching. -'n'lets the period match the newline character. -'u'` means that only UNIX line endings are recognized as line endings.

Parameters

	options_string	The options to parse.
	case_sensitive_is_default	Whether case-sensitive matching is the default.
[out]	flags	These flags will be updated (overridden) with the values of flags in options_string.

Return values

false	String parsed successfully and *flags is updated accordingly.
true	String could not be parsed, *flags is untouched.