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WinGUIostream.cxx

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// $Header: /nfs/slac/g/glast/ground/cvs/gui/src/WinGUIostream.cxx,v 1.2 2001/01/29 06:12:44 burnett Exp $

#ifdef WIN32  // stupid to prevent compilation on unix platforms 

#include "WinGUI.h"
#include "winGUIostream.h"
#include "resource.h"
#include <errno.h>
#include <iostream>
#include <strstream>
#include <fstream>

static std::streambuf* sbout=0;
static std::streambuf* sberr=0;

// special place to put output
static ofstream* tempfile=0;

//          private streambuf used by WinGUIostream
class logbuf : public std::streambuf
{
public:
    logbuf (HWND owner);
    virtual ~logbuf ();

    virtual int overflow (int c);
    virtual int underflow ();

private:
    HWND _win;

};
//         WINGUIostream implementations
//                constructor
WinGUIostream::WinGUIostream(const char* name, HWND owner, HINSTANCE hInstance)
//: ostream(_buf = new logbuf(owner))
: basic_ostream<char>(_buf = new logbuf(owner))
{
    AllocConsole();

 // direct cout and cerr to the console window
    std::streambuf* sbout = std::cout.rdbuf(); 
    std::streambuf* sberr = std::cerr.rdbuf(); 
    std::cout.rdbuf(_buf);
    std::cerr.rdbuf(_buf);

    const char * stdout_filename;
    if( (stdout_filename=::getenv("stdout"))!=0 )
        tempfile = new ofstream(stdout_filename);
 }
//------------------------------------------------------------------------
WinGUIostream::~WinGUIostream()
{
    std::cout.rdbuf(sbout);
    std::cerr.rdbuf(sberr);
    delete _buf;
    
    delete tempfile;
}
//------------------------------------------------------------------------
//                           clear

void WinGUIostream::clear()
{
    //TODO: figure out how to clear console
   flush();

}
//            logbuf implementations

const int LOGBUF_SIZE = 32;

//#doc          Initializes the log buffer.
logbuf::logbuf (HWND owner): _win(owner)
{
        setp (0, 0);
        setg (0, 0, 0);
}

logbuf::~logbuf ()
{ }

int logbuf::underflow () { return traits_type::eof (); }

int logbuf::overflow (int c)
{
    if (c != traits_type::eof ())
    {
        char string [3];
        int length = 1;
        string [0] = c;
        string [1] = '\0';
        string [2] = '\0';
        
        if (c == '\n') {
            string [0] = '\r';
            string [1] = '\n';
            ++length;
        }
        unsigned long numwritten;
        ::WriteConsole(GetStdHandle(STD_OUTPUT_HANDLE), string, length, &numwritten, NULL);

        // write the character(s) to the stdout temporary file
        if(tempfile)  (*tempfile) << string[0]; //string;;
    }
    return 0;
}


#endif // NT_MSVCPP

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