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std::messages::close, std::messages::do_close

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< cpp‎ | locale‎ | messages
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Defined in header <locale>
public:
void close( catalog c ) const;
(1)
protected:
virtual void do_close( catalog c ) const;
(2)

1) public member function, calls the protected virtual member function do_close of the most derived class.

2) Releases the implementation-defined resources associated with an open catalog that is designated by the value c of type catalog (inherited from std::messages_base), which was obtained from open().

Contents

[edit] Parameters

c - a valid open catalog identifier, on which close() has not yet been called

[edit] Return value

(none)

[edit] Notes

On POSIX systems, this function call usually translates to a call to catclose(). In GNU libstdc++, which is implemented in terms of GNU gettext(), it does nothing.

[edit] Example

The following example demonstrated retrieval of messages: on a typical GNU/Linux system it reads from /usr/share/locale/de/LC_MESSAGES/sed.mo

#include <iostream>
#include <locale>
 
int main()
{
    std::locale loc("de_DE.utf8");
    std::cout.imbue(loc);
    auto& facet = std::use_facet<std::messages<char>>(loc);
    auto cat = facet.open("sed", loc);
    if(cat < 0 )
        std::cout << "Could not open german \"sed\" message catalog\n";
    else
        std::cout << "\"No match\" in German: "
                  << facet.get(cat, 0, 0, "No match") << '\n'
                  << "\"Memory exhausted\" in German: "
                  << facet.get(cat, 0, 0, "Memory exhausted") << '\n';
    facet.close(cat);
}

Output:

"No match" in German: Keine Übereinstimmung
"Memory exhausted" in German: Speicher erschöpft

[edit] See also