Making a unicode text file

This is a discussion on Making a unicode text file within the C++ Programming forums, part of the General Programming Boards category; Code: #include <iostream> #include <string> #include <fstream> #include <sstream> int main(int argc, char ** argv) { using namespace std; wifstream ...

  1. #1
    Registered User Tonto's Avatar
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    Making a unicode text file

    Code:
    #include <iostream>
    #include <string>
    #include <fstream>
    #include <sstream>
    
    
    int main(int argc, char ** argv)
    {
    	using namespace std;
    	
    	wifstream in(argv[1]);
    	wofstream out((std::string(argv[1]) + ".xxx").c_str());
    	wstring ws, e;
    
    	wchar_t x[1];
    	
    	in.read(x, 1);
    	out.write(x, 1);
    
    	while(getline(in, ws))
    	{
    		wstringstream ww(ws);
    
    		while(getline(ww, e, L'\t'))
    		{
    			out << e << endl;
    		}
    	}
    }
    The file that I produce is not read properly by a text editor (notepad, vim, whatever) while the other that I read is. I have exsamined the binary of the file and the BOM is the same, as is the format of the unicode character data. What should I do

    ╔╗╔╦══╦╗╔╦══╦╗
    ║╚╝║╔╗║╚╝║╔╗║║
    ║╔╗║╠╣║╔╗║╠╣╠╣
    ╚╝╚╩╝╚╩╝╚╩╝╚╩╝

    codez http://code.google.com/p/zxcvbn/

  2. #2
    Registered User Tonto's Avatar
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    Attach'd is the generated and the test file
    Attached Files Attached Files

    ╔╗╔╦══╦╗╔╦══╦╗
    ║╚╝║╔╗║╚╝║╔╗║║
    ║╔╗║╠╣║╔╗║╠╣╠╣
    ╚╝╚╩╝╚╩╝╚╩╝╚╩╝

    codez http://code.google.com/p/zxcvbn/

  3. #3
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    Just curious, why are you using read and write? Why not get()?

  4. #4
    Registered User Tonto's Avatar
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    The generated file appears to have an EOF marker and the other doesn't. Curious

    >> Just curious, why are you using read and write? Why not get()?

    I'unno.

    get/put
    read/write
    <</>>
    Last edited by Tonto; 02-15-2008 at 05:16 PM.

    ╔╗╔╦══╦╗╔╦══╦╗
    ║╚╝║╔╗║╚╝║╔╗║║
    ║╔╗║╠╣║╔╗║╠╣╠╣
    ╚╝╚╩╝╚╩╝╚╩╝╚╩╝

    codez http://code.google.com/p/zxcvbn/

  5. #5
    Cat without Hat CornedBee's Avatar
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    The wide file streams perform a pretty much implemention-defined conversion on I/O. It depends mostly on your locale. If you're using a Windows ANSI locale, which you most likely are, it will convert the internal UTF-16 to Windows-1252 on writing. Or if you're on Linux, the UTF-32 to ISO-8859-1, or perhaps UTF-8 if you're using a UTF-8 locale.

    All this adds up to the fact that C++'s character handling is quite useless.

    You could write a UTF-16 codecvt facet.
    Last edited by CornedBee; 02-15-2008 at 06:53 PM.
    All the buzzt!
    CornedBee

    "There is not now, nor has there ever been, nor will there ever be, any programming language in which it is the least bit difficult to write bad code."
    - Flon's Law

  6. #6
    Registered User Codeplug's Avatar
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    Didn't realize you started another thread on the subject....

    Template Instantiation

    When I wrote that, I was only thinking of windows and MSVC where wchar_t is 2 bytes and wide string literals are UTF-16LE. I keep forgetting sizeof(wchar_t) and character encodings for string literals are implementation defined

    gg

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