Unicode: setCodec("UTF-32le") not pairs surrogates

AndrzejB

Unicode map 20000-20FFF

#include <QFile>
#include <QTextStream>
#include <random>

using namespace std;

int main(int argc, char *argv[])
{
    mt19937 gen(0);
    unsigned int ui[1000];
    uniform_int_distribution<unsigned int> dis(0x20000, 0x20fff);
    for (int i=0; i<1000; i++)
        ui[i] = dis(gen);
    QString extstr = QString::fromUcs4(ui,1000);
    printf("%d\n",extstr.length());
    QFile file("h:\\res\\eutf32le.txt");
    file.open(QIODevice::WriteOnly | QIODevice::Text);
    QTextStream out(&file);
    out.setCodec("UTF-32le");
    out.setGenerateByteOrderMark(false);
    out << extstr;
    file.close();
}

File size = 8000 bytes instead 4000 like ui table.
For utf16->utf8 is OK.

AndrzejB

I check this file and from half is junk, first half seems to be good.