std::towctrans
Defined in header <cwctype>
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std::wint_t towctrans( std::wint_t wc, std::wctrans_t desc ); |
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Maps the wide character wc
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.
Parameters
ch | - | the wide character to map |
desc | - | the LC_CTYPE mapping, obtained from a call to std::wctrans |
Return value
The mapped value of ch
using the mapping identified by desc
in LC_CTYPE facet of the current C locale.
Example
The following example demonstrates katakana to hiragana character mapping
Run this code
#include <clocale> #include <cwctype> #include <iostream> #include <algorithm> 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
See also
looks up a character mapping category in the current C locale (function) |