How Can I Reliably Convert a C String to a Wide String?

Converting Strings to Wstrings in C

Your question involves converting a string s to a wide string ws in C . While some methods can't fully preserve the original content, there is an effective solution using standard library components.

Problem Description

Given a string s, you want to assign its contents to a wstring ws. However, previous attempts have resulted in distorted or inaccurate conversion.

Solution: Standard Library Conversion

#include <locale>
#include <codecvt>
#include <string>

std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> converter;
std::wstring ws = converter.from_bytes(s);

Explanation

This code uses standard library functions to perform the conversion.

• std::wstring_convert: A converter object that provides a from_bytes() method for converting a char string to a wstring.
• std::codecvt_utf8_utf16: A character encoding converter that converts between UTF-8 and UTF-16 encodings.

By using this encoding conversion, the original Unicode characters in s are accurately preserved in ws.

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