private void ChangeCharacterSetInTextBox(TextBox tb, characterSets toCharacterSet)
{
int ss = tb.SelectionStart;
int sl = tb.SelectionLength;
tb.Text = ChangeCharacterSet(tb.Text, toCharacterSet);
tb.SelectionStart = ss;
tb.SelectionLength = sl;
}
public MainWindow()
{
InitializeComponent();
rb_CharacterSet1.IsChecked = true;
currCharacterSet = characterSets.characterSet1;
InputMethod.SetIsInputMethodEnabled(tb_Input, false); // Das verhindert das Einfügen von "double byte chars" z.B. von Emoji's (Stichwort: UTF-32)
// The High Surrogate(U+D800–U+DBFF) and Low Surrogate(U+DC00–U+DFFF) codes are reserved for encoding non-BMP characters in UTF - 16 by using a pair of 16 - bit codes: one High Surrogate and one Low Surrogate.
// A single surrogate code point will never be assigned a character.
// non-Basic Multilingual Plane (non-BMP)
// https://en.wikipedia.org/wiki/Plane_(Unicode)
}
private string GetUnicodeStringCharacterSetRangeByPETSCIIByteArray(byte[] PETSCII, characterSets toCharacterSet)
{
StringBuilder sb = new StringBuilder();
byte[] b = new byte[2];
foreach (byte currb in PETSCII)
{
b[0] = (byte)toCharacterSet;
b[1] = currb;
sb.Append(Encoding.BigEndianUnicode.GetString(b));
}
return(sb.ToString());
}
private string ChangeCharacterSet(string str, characterSets toCharacterSet)
{
byte[] PETSCII = GetPETSCIIByteArrayByUnicodeString(str, false, true, false);
return(GetUnicodeStringCharacterSetRangeByPETSCIIByteArray(PETSCII, toCharacterSet));
}
private void Rb_CharacterSet2_Checked(object sender, RoutedEventArgs e)
{
currCharacterSet = characterSets.characterSet2;
ChangeCharacterSetInTextBox(tb_Input, currCharacterSet);
}
