STD::MESSAGES(3)

💖 NAME 💖

okay bestie, say hi to std::messages< _CharT > — it's the Primary class template messages, and it lives in the Library Functions Manual corner of the C++ universe. no cap. 🫶

---

✨ SYNOPSIS ✨

#include <locale>

so here's the tea on its family tree 🌳:

• It Inherits std::locale::facet, and std::messages_base. iconic lineage honestly.
• It's Inherited by std::messages_byname< _CharT >. passing the crown down, periodt. 👑

🌸 Public Types 🌸

• typedef int catalog — yep, a catalog is literally just an int. humble but essential.
• typedef _CharT char_type — Public typedefs. (that's the whole note, bestie, we don't gatekeep.)
• typedef basic_string< _CharT > string_type — Public typedefs. again, exactly what the page says, no extras.

🎀 Public Member Functions 🎀

• messages (__c_locale __cloc, const char *__s, size_t __refs=0) — Internal constructor. Not for general use. like, it's backstage-only, you do not have a pass. 🙈
• messages (size_t __refs=0) — Constructor performs initialization.
• void close (catalog __c) const — closes a catalog, that's it, that's the whole vibe.
• string_type get (catalog __c, int __set, int __msgid, const string_type &__s) const — the getter. it gets.
• catalog open (const basic_string< char > &, const locale &, const char *) const — opens one, takes a string, a locale and a const char *.
• catalog open (const basic_string< char > &__s, const locale &__loc) const — the two-arg version, all named and cozy.

🦋 Static Public Attributes 🦋

• static locale::id id — Numpunct facet id. (yes, the page really does say "Numpunct facet id" for the messages facet. we report, we don't editorialize 💀)

💅 Protected Member Functions 💅

• virtual ~messages () — Destructor. bye bestie, protected AND virtual. 💀
• string_type _M_convert_from_char (char *) const — takes a char *, gives back a string_type.
• char * _M_convert_to_char (const string_type &__msg) const — the reverse glow-up.
• virtual void do_close (catalog) const — listed. yes. again.
• void do_close (catalog) const — listed. yes. a second time.
• void do_close (catalog) const — and a third. the page lists all three, so we list all three. keeping every detail is the whole assignment. 📋
• string do_get (catalog, int, int, const string &) const — Specializations for required instantiations.
• virtual string_type do_get (catalog, int, int, const string_type &__dfault) const — the virtual one, with a __dfault fallback because sometimes you need a safety net.
• wstring do_get (catalog, int, int, const wstring &) const — wide-string flavored.
• virtual catalog do_open (const basic_string< char > &, const locale &) const — the virtual opener.
• messages< wchar_t >::catalog do_open (const basic_string< char > &, const locale &) const — the wchar_t specialization.
• messages< char >::catalog do_open (const basic_string< char > &, const locale &) const — and the char one. matching set, slay. ✨

🌈 Static Protected Member Functions 🌈

• static __c_locale _S_clone_c_locale (__c_locale &__cloc) throw () — clones the C locale, and yes it's got a throw ().
• static void _S_create_c_locale (__c_locale &__cloc, const char *__s, __c_locale __old=0) — makes one, with an optional __old=0.
• static void _S_destroy_c_locale (__c_locale &__cloc) — and destroys one. the full lifecycle, we love to see it. 🦋
• static __c_locale _S_get_c_locale () — grabs it.
• static const char * _S_get_c_name () throw () — grabs the name, also throw ().
• static __c_locale _S_lc_ctype_c_locale (__c_locale __cloc, const char *__s) — the LC_CTYPE-flavored one.

🍓 Protected Attributes 🍓

• __c_locale _M_c_locale_messages — the C locale, stored.
• const char * _M_name_messages — the name, stored. keeping receipts. 💅

---

👑 Detailed Description 👑

template<typename _CharT> class std::messages< _CharT >

"Primary class template messages."

okay so what does this facet actually do? here's the rundown, verbatim energy only:

This facet encapsulates the code to retrieve messages from message catalogs. The only thing defined by the standard for this facet is the interface. All underlying functionality is implementation-defined. 🫠

This library currently implements 3 versions of the message facet:

1. The first version (gnu) is a wrapper around gettext, provided by libintl.
2. The second version (ieee) is a wrapper around catgets.
3. The final version (default) does no actual translation.

These implementations are only provided for char and wchar_t instantiations. no other flavors, bestie, that's the whole menu. 🍓

The messages template uses protected virtual functions to provide the actual results. The public accessors forward the call to the virtual functions. These virtual functions are hooks for developers to implement the behavior they require from the messages facet. it's giving "you do the work, the class just holds the mic." 🎤

---

🌸 Member Typedef Documentation 🌸

template<typename _CharT> typedef _CharT std::messages< _CharT >::char_type

Public typedefs.

template<typename _CharT> typedef basic_string<_CharT> std::messages< _CharT >::string_type

Public typedefs.

---

🎀 Constructor & Destructor Documentation 🎀

template<typename _CharT> std::messages< _CharT >::messages (size_t __refs = 0) [explicit]

Constructor performs initialization. This is the constructor provided by the standard. the official one, not the secret one. 💖

Parameters

• __refs — Passed to the base facet class.

References std::locale::facet::facet().

template<typename _CharT> std::messages< _CharT >::messages (__c_locale __cloc, const char * __s, size_t __refs = 0) [explicit]

Internal constructor. Not for general use. This is a constructor for use by the library itself to set up new locales. like we said, backstage pass only, do not try this at home. 🙈

Parameters

• __cloc — The C locale.
• __s — The name of a locale.
• __refs — Refcount to pass to the base class.

References std::locale::facet::facet().

template<typename _CharT> std::messages< _CharT >::~messages () [protected], [virtual]

Destructor. protected AND virtual, she's mysterious, she's not yours. 💅

---

🌈 Member Function Documentation 🌈

string std::messages< char >::do_get (catalog , int , int , const string & ) const [protected]

Specializations for required instantiations.

---

⭐ Member Data Documentation ⭐

template<typename _CharT> locale::id std::messages< _CharT >::id [static]

Numpunct facet id.

---

🫶 Author 🫶

Generated automatically by Doxygen for libstdc++ from the source code. a robot wrote it, we just gave it a personality. 🤖✨

---

aaaand that's the whole page bestie — it's from the libstdc++ crew and it's the std::messages< _CharT >(3) manual page, section 3, library functions energy, no cap, periodt. go read a message catalog or something. mwah. 💖🎀🦋