22 Localization library [localization]

22.4 Standard locale categories [locale.categories]

22.4.7 The message retrieval category [category.messages]

22.4.7.1 Class template messages [locale.messages]

22.4.7.1.2 messages virtual functions [locale.messages.virtuals]

catalog do_open(const basic_string<char>& name, const locale& loc) const;

1

Returns: A value that may be passed to get() to retrieve a message from the message catalog identified by the string name according to an implementation-defined mapping. The result can be used until it is passed to close().

2

Returns a value less than 0 if no such catalog can be opened.

3

Remarks: The locale argument loc is used for character set code conversion when retrieving messages, if needed.

string_type do_get(catalog cat, int set, int msgid, const string_type& dfault) const;

4

Requires: cat shall be a catalog obtained from open() and not yet closed.

5

Returns: A message identified by arguments set, msgid, and dfault, according to an implementation-defined mapping. If no such message can be found, returns dfault.

void do_close(catalog cat) const;

6

Requires: cat shall be a catalog obtained from open() and not yet closed.

7

Effects: Releases unspecified resources associated with cat.

8

Remarks: The limit on such resources, if any, is implementation-defined.