anonymous_namespace{charset.cc} Namespace Reference

Classes
class	Mysys_charset_loader

Functions
bool	starts_with_utf8 (const char *name)
int	utf8_alias_lookup (const char *cname)
	What does "utf8" mean, "utf8mb3" or "utf8mb4"? More...

Function Documentation

starts_with_utf8()

bool anonymous_namespace{charset.cc}::starts_with_utf8

(

const char *

name

)

utf8_alias_lookup()

int anonymous_namespace{charset.cc}::utf8_alias_lookup

(

const char *

cname

)

What does "utf8" mean, "utf8mb3" or "utf8mb4"?

We ask 'current_thd' whether MODE_INTERPRET_UTF8_AS_UTF8MB4 has been set in SQL_MODE.

We return 3 or 4 to indicate what alias is active. A special value 42 is used during bootstrap: reject command line arguments, and abort. There are no lookups during shutdown.

For client-side requests (e.g. mysql –default-character-set=utf8) we always return 3.

Parameters

[in]

cname

Charset/Collation name, used during bootstrap to give the desired error message.

Returns

3,4,42 to indicate what alias to use, or to abort.