unicode - Typographic apostrophe + wide string literal broke my wofstream (C++) -


I had to face some strange behavior in dealing with inauspicious typographic apoprophies (') - Typewriter apostropha ('. Epostroffefream breaks down.

This code works 

  offstream file ("test.txt"); file & lt; & lt ; "A'b"; file.close ();

==> A-B

This code works 

 < Code> wofstream file ("test.txt"); File  
 This code fails  
  wofstream file ("test.txt"); File  "A'B"; File.close ();  
 
 ==> A 
 
 This code fails ... 
 
  wstring test = l "A'b"; Wofstream file ("test.txt"); File  
 
 ==> A 
 
 Any ideas?

Before you can use wofstream, the "enabled" locale should be: < / P> 

  std :: locale :: global (std :: locale ()); // local support support wofstream file ("test.txt"); File & lt; & Lt; L "A'B";

So if you have the system locale en_US.UTF-8 then the file test.txt will contain UF 8 encoded data ( 4 bye), if you have the system locale en_US.ISO8859-1 , then it must be encoded as 8 bit encoding (3 bytes), as long as the ISO 8859-1 Does not miss the character 

  wofstream file ("test.txt"); File & lt; & Lt; "A'b"; File.close ();   
 This code works because  "A'B"  is actually a utf-8 string and you can use utf-8 string byte to file a byte Save. 
 
  Note:  I think that you are using POSIs like OS, and you have default location which is different from "C" which is the default locale.

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