std::towctrans
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Null-terminated wide strings
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Defined in header
<cwctype>
std::wint_t towctrans( std::wint_t ch, std::wctrans_t desc );
Maps the wide character ch using the current C locale's LC_CTYPE mapping category identified by desc.
If the value of ch is neither representable as a wchar_t nor equal to the value of the macro WEOF, the behavior is undefined.
Contents
[edit] Parameters
ch
-
the wide character to map
desc
-
the LC_CTYPE mapping, obtained from a call to std::wctrans
[edit] Return value
The mapped value of ch using the mapping identified by desc in LC_CTYPE facet of the current C locale.
[edit] Example
The following example demonstrates katakana to hiragana character mapping.
Run this code
#include <algorithm> #include <clocale> #include <cwctype> #include <iostream> std::wstring tohira(std::wstring str) { std::transform (str.begin(), str.end(), str.begin(), [](wchar_t c) { return std::towctrans(c, std::wctrans ("tojhira")); }); return str; } int main() { std::setlocale (LC_ALL, "ja_JP.UTF-8"); std::wstring kana = L"ヒラガナ"; std::wcout << "katakana characters " << kana << " are " << tohira(kana) << " in hiragana\n"; }
Output:
katakana characters ヒラガナ are ひらがな in hiragana
[edit] See also
C documentation for towctrans