std::towctrans
From cppreference.com
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
| looks up a character mapping category in the current C locale (function) | |
C documentation for towctrans | |
