//===-- Platform.cpp --------------------------------------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// this file is only relevant for Visual C++
#if defined(_MSC_VER)

#include <process.h>
#include <assert.h>

#include "Platform.h"

// the control handler or SIGINT handler
static sighandler_t _ctrlHandler = NULL;

// the default console control handler
BOOL WINAPI CtrlHandler(DWORD ctrlType)
{
    if (_ctrlHandler != NULL)
    {
        _ctrlHandler(0);
        return TRUE;
    }
    return FALSE;
}

int
ioctl(int d, int request, ...)
{
    switch (request)
    {
        // request the console windows size
        case (TIOCGWINSZ):
        {
            va_list vl;
            va_start(vl, request);
            // locate the window size structure on stack
            winsize *ws = va_arg(vl, winsize *);
            // get screen buffer information
            CONSOLE_SCREEN_BUFFER_INFO info;
            if (GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &info) == TRUE)
                // fill in the columns
                ws->ws_col = info.dwMaximumWindowSize.X;
            va_end(vl);
            return 0;
        }
        break;
        default:
            assert(!"Not implemented!");
    }
    return -1;
}

int
kill(pid_t pid, int sig)
{
    // is the app trying to kill itself
    if (pid == getpid())
        exit(sig);
    //
    assert(!"Not implemented!");
    return -1;
}

int
tcsetattr(int fd, int optional_actions, const struct termios *termios_p)
{
    assert(!"Not implemented!");
    return -1;
}

int
tcgetattr(int fildes, struct termios *termios_p)
{
    //  assert( !"Not implemented!" );
    // error return value (0=success)
    return -1;
}

sighandler_t
signal(int sig, sighandler_t sigFunc)
{
    switch (sig)
    {
        case (SIGINT):
        {
            _ctrlHandler = sigFunc;
            SetConsoleCtrlHandler(CtrlHandler, TRUE);
        }
        break;
        case (SIGPIPE):
        case (SIGWINCH):
        case (SIGTSTP):
        case (SIGCONT):
            // ignore these for now
            break;
        default:
            assert(!"Not implemented!");
    }
    return 0;
}

#endif
