How can I read a text file containing Unicode, into a wchar_t pointer using wifstream?

Asked Nov 28 '16 at 12:54

Active Nov 28 '16 at 13:02

Viewed 534 times

I'm trying to read Unicode characters from a text file into a wchar_t pointer array, using wifstream. Here is a code snippet:

locale::global(std::locale("en_US.UTF-8"));
std::wifstream inputFile("gsmCharacterSet.txt", std::ifstream::binary | std::ifstream::ate);
int length = inputFile.tellg();
inputFile.seekg(0,inputFile.beg);
wchar_t *charArray = new wchar_t[length];
inputFile.read(charArray,length);

It's not working. The length returned is 252 which is the correct file size in bytes. However, the array remains empty.

The following condition returns true:

if ( inputFile.peek() == std::wifstream::traits_type::eof() )
    cout << "File is empty";

I'm compiling the program on Linux using g++. What am I doing wrong? Thanks for the help.

edited Nov 28 '16 at 13:02

Iharob Al Asimi

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asked Nov 28 '16 at 12:54

yogur

Don't use `wchar_t` in c++. Use `std::string` as it automatically handles unicode. – Iharob Al Asimi Nov 28 '16 at 13:02
@iharob know I can use `std::string`, but I'm required Not to use it. – yogur Nov 28 '16 at 13:16
@IharobAlAsimi No it doesn't. – Asteroids With Wings Jul 08 '20 at 00:18

How can I read a text file containing Unicode, into a wchar_t pointer using wifstream?

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