Re: [Boost-users] [std][msvc++][vs2005sp1] unable to open iostream with greek letters in path name

From: TOL Tsagarakis Manos (mtsagara_at_[hidden])
Date: 2007-04-25 10:56:42

Thanks Hector,

I believe I found a solution to the problem here:

http://forums.microsoft.com/msdn/ShowPost.aspx?PostID=145439&SiteID=1

that is calling setlocale(LC_CTYPE, "");
once at the beginning of the program.

It seems ok for now. At this time I don’t want to bother with Unicode stuff ... 

Manos

-----Original Message-----
From: boost-users-bounces_at_[hidden] [mailto:boost-users-bounces_at_[hidden]] On Behalf Of Hector C.
Sent: Wednesday, April 25, 2007 3:42 PM
To: boost-users_at_[hidden]
Subject: Re: [Boost-users] [std][msvc++][vs2005sp1] unable to open iostream with greek letters in path name

You might want to learn a bit about unicode. Without
it, your filename is treated using a codepage. In C++,
the support goes through wchar_t, wifstream,
wofstream, etc.

Boost has some unicode support, but as far as I
remember the filename library didn't have it. It's
been more than a year since I last checked, though.

Hope it helps,

--Hector

--- TOL Tsagarakis Manos <mtsagara_at_[hidden]> wrote:

> Hello everyone,
> 
>  
> 
> I know this is not a boost related issue, but I hope
> someone has a solution.
> 
> The question is very simple and should not even be
> asked:
> 
>  
> 
> “How can I open a file using std::iostreams, if
> the files full path, contains Greek letters (or
> probably any other language except English)?”
> 
>  
> 
> The test case below shows part of the problem as it
> successfully opens the file using std::oftream and
> writes some Greek in it.
> 
> Then I can read back its contents using
> std::ifstream. Now the file name in windows explorer
> or command line should be "ελληνικό
> όνομα αρχείου.txt" (in case you can't
> read this, it is "greek file name.txt"). But instead
> it becomes "åëëçíéêü üíïìá
> áñ÷åßïõ.txt"
> 
>  
> 
> Actually when this is done by a full MFC application
> it is impossible to open the file! I get assertion
> failure!
> 
>  
> 
> I use MS Visual Studio 2005 sp1 and std lib and CRT
> that comes with it.
> 
>  
> 
> Has anyone faced this problem before?
> 
> Do I have to do something special in order to be
> able to use standard iostreams library with Greek
> file names?
> 
>  
> 
>  
> 
> Thank you in advanced,
> 
>  
> 
> Emmanuil Tsagarakis
> 
>  
> 
>  
> 
>  
> 
>  
> 
>  
> 
>  
> 
>  
> 
> // test_greek_filenames.cpp compile with: /EHsc
> 
> #include <iostream>
> 
> #include <fstream>
> 
> #include <iterator>
> 
> #include <algorithm>
> 
> #include <string>
> 
> #include <vector>
> 
> #include <assert.h>
> 
>  
> 
> using namespace std;
> 
>  
> 
> namespace {
> 
>     struct string_by_line : std::string
> 
>     {
> 
>     };
> 
>  
> 
>     std::istream & operator >> (std::istream & is,
> string_by_line & strLine)
> 
>     {
> 
>         getline(is, strLine);
> 
>         return is;
> 
>     }
> 
>  
> 
>     const string s_strFileName("ελληνικό
> όνομα αρχείου.txt"); }
> 
>  
> 
> int main(int argc, char **argv)
> 
> {
> 
>     ofstream ofs;
> 
>     ofs.open(s_strFileName.c_str());
> 
>     assert(ofs.good());
> 
>     ofs << "Writing to file ..." << endl;
> 
>     ofs << "Ελληνικά περιεχόμενα
> στο αρχείο (greek file contents) ..." <<
> endl;
> 
>     ofs.close();
> 
>  
> 
>     ifstream ifs;
> 
>     ifs.open(s_strFileName.c_str());
> 
>     assert(ifs.good());
> 
>  
> 
>     std::vector<std::string> vecContents;
> 
>    
> std::copy(std::istream_iterator<string_by_line>(ifs
> ), std::istream_iterator<string_by_line>(),
> std::back_inserter(vecContents));
> 
>     for (size_t i=0; i<vecContents.size(); ++i)
> 
>         cout << vecContents.at(i) << endl;
> 
>     ifs.close();
> 
> }
> 
>  
> 
>  
> 
>  
> 
>  
> 
>  
> 
>  
> 
>  
> 
> > _______________________________________________
> Boost-users mailing list
> Boost-users_at_[hidden]
>
http://lists.boost.org/mailman/listinfo.cgi/boost-users

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