Console.cpp

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/*
 * regexpl - Console Registry Explorer
 *
 * Copyright (C) 2000-2005 Nedko Arnaudov <nedko@users.sourceforge.net>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

// Console.cpp: implementation of the CConsole class.
//

#include "ph.h"
#include "Console.h"

#define TAB_WIDTH         8
#define MORE_STRING         _T("-- Press space to view more. Press q or Ctrl+break to cancel.--")
#define MORE_EMPTY_STRING   _T("                                                               ")

/*
TCHAR * _tcsnchr(const TCHAR *string, TCHAR ch, int count)
{
    while (count--)
    {
        if (*string == 0) return NULL;
        if (*string == ch) return const_cast <char *>(string);
        string++;
    }
    return NULL;
}*/


// Construction/Destruction

CConsole::CConsole()
{
    m_hStdIn = INVALID_HANDLE_VALUE;
    m_hStdOut = INVALID_HANDLE_VALUE;
    m_blnInsetMode = TRUE;      // Insert
//  m_blnInsetMode = FALSE;     // Overwrite
    m_dwInsertModeCursorHeight = 15;
    m_dwOverwriteModeCursorHeight = 100;
//  m_Lines = 0;
    m_pchBuffer = NULL;
    m_pchBuffer1 = NULL;
    m_pchBuffer2 = NULL;
    m_pfReplaceCompletionCallback = NULL;
    m_blnMoreMode = TRUE;
    m_dwOldInputMode = 0;
    m_dwOldOutputMode = 0;
    m_blnOldInputModeSaved = FALSE;
    m_blnOldOutputModeSaved = FALSE;
}

CConsole::~CConsole()
{
    if (m_pchBuffer)
        delete[] m_pchBuffer;
    if (m_pchBuffer1)
        delete[] m_pchBuffer1;
    if (m_pchBuffer2)
        delete[] m_pchBuffer2;

    if (m_blnOldInputModeSaved)
        SetConsoleMode(m_hStdIn,m_dwOldInputMode);
    if (m_blnOldOutputModeSaved)
        SetConsoleMode(m_hStdOut,m_dwOldOutputMode);

    if (m_hStdIn != INVALID_HANDLE_VALUE)
        VERIFY(CloseHandle(m_hStdIn));
    if (m_hStdOut != INVALID_HANDLE_VALUE)
        VERIFY(CloseHandle(m_hStdOut));
}

BOOL CConsole::Write(const TCHAR *p, DWORD dwChars)
{
    if (m_hStdOut == INVALID_HANDLE_VALUE)
        return FALSE;
    if (m_hStdIn == INVALID_HANDLE_VALUE)
        return FALSE;
    if (p == NULL)
    {
        ASSERT(FALSE);
        return FALSE;
    }
    DWORD dwCharsToWrite = (dwChars)?dwChars:_tcslen(p);
    DWORD dwCharsWrittenAdd = 0;
    BOOL ret = TRUE;
    while (dwCharsToWrite && (!m_blnDisableWrite))
    {
        switch(p[dwCharsWrittenAdd])
        {
        case _T('\n'):
            m_CursorPosition.Y++;
            m_CursorPosition.X = 0;
            break;
        case _T('\r'):
            dwCharsWrittenAdd++;
            dwCharsToWrite--;
            continue;
        case _T('\t'):
            do
            {
                if (!Write(_T(" "))) return FALSE;
            }
            while ((m_CursorPosition.X % TAB_WIDTH) && (!m_blnDisableWrite));
            dwCharsWrittenAdd++;
            dwCharsToWrite--;
            continue;
        default:
            {
                if (!WriteChar(p[dwCharsWrittenAdd])) return FALSE;
                m_CursorPosition.X++;
            }
        }
        if (m_CursorPosition.X == m_BufferSize.X)
        {
            m_CursorPosition.Y++;
            m_CursorPosition.X = 0;
        }
        if (m_CursorPosition.Y == m_BufferSize.Y)
        {
            ASSERT(m_CursorPosition.X == 0);
            SMALL_RECT Src;
            Src.Left = 0;
            Src.Right = (SHORT)(m_BufferSize.X-1);
            Src.Top = 1;
            Src.Bottom = (SHORT)(m_BufferSize.Y-1);
            CHAR_INFO ci;
#ifdef UNICODE
            ci.Char.UnicodeChar = L' ';
#else
            ci.Char.AsciiChar = ' ';
#endif
            ci.Attributes = 0;
            COORD Dest;
            Dest.X = 0;
            Dest.Y = 0;
            if (!ScrollConsoleScreenBuffer(m_hStdOut,&Src,NULL,Dest,&ci)) return FALSE;
            m_CursorPosition.Y--;
            m_LinesScrolled++;
        }
        if (!SetConsoleCursorPosition(m_hStdOut,m_CursorPosition)) return FALSE;
        VERIFY(WriteChar(_T(' ')));
        if ((m_blnMoreMode)&&(m_CursorPosition.X == 0))
        {
            m_Lines++;
            if (m_Lines >= m_BufferSize.Y-1)
            {
                ASSERT(m_Lines == m_BufferSize.Y-1);
                m_Lines = 0;
                VERIFY(WriteString(MORE_STRING,m_CursorPosition));
                VERIFY(FlushInputBuffer());

                CONSOLE_CURSOR_INFO cci;
                cci.bVisible = FALSE;
                cci.dwSize = 100;
                VERIFY(SetConsoleCursorInfo(m_hStdOut,&cci));

                INPUT_RECORD InputRecord;
                DWORD dwRecordsReaded;
                while ((ret = ReadConsoleInput(m_hStdIn,&InputRecord,1,&dwRecordsReaded)) != FALSE)
                {
                    ASSERT(dwRecordsReaded == 1);
                    if (dwRecordsReaded != 1)
                        break;
                    if (InputRecord.EventType != KEY_EVENT)
                        continue;
                    if (!InputRecord.Event.KeyEvent.bKeyDown)
                        continue;

                    if ((InputRecord.Event.KeyEvent.wVirtualKeyCode == VK_CANCEL)||
                        (InputRecord.Event.KeyEvent.wVirtualKeyCode == _T('Q')))
                    {
                        VERIFY(GenerateConsoleCtrlEvent(CTRL_C_EVENT,0));
                        continue;
                    }
#ifdef UNICODE
                    TCHAR ch = InputRecord.Event.KeyEvent.uChar.UnicodeChar;
#else
                    TCHAR ch = InputRecord.Event.KeyEvent.uChar.AsciiChar;
#endif
                    if (ch)
                        break;
                }

                // delete "more" msg
                VERIFY(WriteString(MORE_EMPTY_STRING,m_CursorPosition));
                m_CursorPosition.X = 0;

                cci.bVisible = TRUE;
                cci.dwSize = m_blnInsetMode?m_dwInsertModeCursorHeight:m_dwOverwriteModeCursorHeight;
                VERIFY(SetConsoleCursorInfo(m_hStdOut,&cci));
            }
        }
        dwCharsWrittenAdd++;
        dwCharsToWrite--;
    }
    return ret;
}

unsigned int CConsole::GetTabWidth()
{
  return TAB_WIDTH;
}

BOOL CConsole::SetTitle(const TCHAR *p)
{
    return SetConsoleTitle(p);
}

BOOL CConsole::SetTextAttribute(WORD wAttributes)
{
    m_wAttributes = wAttributes;
    return TRUE;
}
/*
BOOL CConsole::SetInputMode(DWORD dwMode)
{
    return SetConsoleMode(m_hStdIn,dwMode);
}

BOOL CConsole::SetOutputMode(DWORD dwMode)
{
    return SetConsoleMode(m_hStdOut,dwMode);
}*/

BOOL CConsole::FlushInputBuffer()
{
    if (m_hStdIn == INVALID_HANDLE_VALUE) return FALSE;
    return FlushConsoleInputBuffer(m_hStdIn);
}

BOOL CConsole::ReadLine()
{
    if (m_hStdIn == INVALID_HANDLE_VALUE) return FALSE;
    if (m_hStdOut == INVALID_HANDLE_VALUE) return FALSE;
    if (m_dwBufferSize == 0)
    {
        ASSERT(FALSE);
        return FALSE;
    }
    if (m_pchBuffer == NULL)
    {
        ASSERT(FALSE);
        return FALSE;
    }
    if (m_pchBuffer1 == NULL)
    {
        ASSERT(FALSE);
        return FALSE;
    }
    if (!FlushConsoleInputBuffer(m_hStdIn)) return FALSE;

    COORD FristCharCursorPosition = m_CursorPosition;
#define X_CURSOR_POSITION_FROM_OFFSET(ofs)  USHORT(((FristCharCursorPosition.X + ofs)%m_BufferSize.X))
#define Y_CURSOR_POSITION_FROM_OFFSET(ofs)  USHORT((FristCharCursorPosition.Y + (FristCharCursorPosition.X + ofs)/m_BufferSize.X))
//#define OFFSET_FROM_CURSOR_POSITION(pos)  ((pos.Y-FristCharCursorPosition.Y)*m_BufferSize.X+pos.X-FristCharCursorPosition.X)

    DWORD dwRecordsReaded;
    DWORD dwCurrentCharOffset = 0;
    DWORD dwLastCharOffset = 0;
    BOOL ret;

    BOOL blnCompletionMode = FALSE;
//  unsigned __int64 nCompletionIndex = 0;
    unsigned long long nCompletionIndex = 0;
    DWORD dwCompletionOffset = 0;
    DWORD dwCompletionStringSize = 0;
    COORD CompletionPosition = FristCharCursorPosition;

    m_LinesScrolled = 0;
    BOOL blnOldMoreMode = m_blnMoreMode;
    m_blnMoreMode = FALSE;

    DWORD dwHistoryIndex = 0;

    INPUT_RECORD InputRecord;
    while ((ret = ReadConsoleInput(m_hStdIn,&InputRecord,1,&dwRecordsReaded)) != FALSE)
    {
        ASSERT(dwRecordsReaded == 1);
        if (dwRecordsReaded != 1) return FALSE;
        if (InputRecord.EventType != KEY_EVENT) continue;
        if (!InputRecord.Event.KeyEvent.bKeyDown) continue;
#ifdef UNICODE
        TCHAR ch = InputRecord.Event.KeyEvent.uChar.UnicodeChar;
#else
        TCHAR ch = InputRecord.Event.KeyEvent.uChar.AsciiChar;
#endif
KeyRepeat:
        if (m_LinesScrolled)
        {
            if (m_LinesScrolled > FristCharCursorPosition.Y) return FALSE;
            FristCharCursorPosition.Y = SHORT(FristCharCursorPosition.Y - m_LinesScrolled);
            if (m_LinesScrolled > CompletionPosition.Y) return FALSE;
            CompletionPosition.Y = SHORT(CompletionPosition.Y - m_LinesScrolled);
            m_LinesScrolled = 0;
        }
//      char Buf[1024];
//      sprintf(Buf,"wVirtualKeyCode = %u\nchar = %u\n\n",InputRecord.Event.KeyEvent.wVirtualKeyCode,ch);
//      OutputDebugString(Buf);

#ifndef NO_PASTE
        if ((ch == 0x16)&&(InputRecord.Event.KeyEvent.wVirtualKeyCode == 'V'))
        {
            goto Paste;
        }
        else
#endif
    if (ch == 0)
        {
#ifndef NO_PASTE
            if (InputRecord.Event.KeyEvent.wVirtualKeyCode == VK_INSERT)
            {
                if (!(InputRecord.Event.KeyEvent.dwControlKeyState & SHIFT_PRESSED))
                {
                    VERIFY(SetInsertMode(!m_blnInsetMode));
                }
                else
                {
                    if (blnCompletionMode) blnCompletionMode = FALSE;

Paste:
                    if (!IsClipboardFormatAvailable(
#ifdef UNICODE
                        CF_UNICODETEXT
#else
                        CF_TEXT
#endif
                        ))
                        continue;
                    if (!OpenClipboard(NULL))
                        continue;

                    const TCHAR *pch = NULL;

                    HANDLE hglb = GetClipboardData(
#ifdef UNICODE
                        CF_UNICODETEXT
#else
                        CF_TEXT
#endif
                        );
                    if (hglb != NULL)
                    {
                        LPTSTR lptstr = (LPTSTR)GlobalLock(hglb);
                        if (lptstr != NULL)
                        {
                            _tcsncpy(m_pchBuffer1,lptstr,m_dwBufferSize);
                            m_pchBuffer1[m_dwBufferSize-1] = 0;
                            pch = m_pchBuffer1;
                            GlobalUnlock(hglb);
                        }
                    }
                    CloseClipboard();

                    if (pch == NULL) continue;

                    while (*pch)
                    {
                        if (_istprint(*pch))
                        {
                            if (dwLastCharOffset >= m_dwBufferSize-1)
                            {
                                ASSERT(dwLastCharOffset == m_dwBufferSize-1);
                                //              Beep(1000,100);
                                break;
                            }
                            TCHAR ch1;
                            //if (m_blnInsetMode)
                            ch1 = m_pchBuffer[dwCurrentCharOffset];
                            m_pchBuffer[dwCurrentCharOffset] = *pch;
                            if ((m_blnInsetMode)||(dwCurrentCharOffset == dwLastCharOffset)) dwLastCharOffset++;
                            dwCurrentCharOffset++;
                            if (!Write(pch,1)) return FALSE;
                            if (m_blnInsetMode)
                            {
                                COORD Cursor = m_CursorPosition;
                                DWORD ofs = dwCurrentCharOffset;

                                while(ofs <= dwLastCharOffset)
                                {
                                    ch = m_pchBuffer[ofs];
                                    m_pchBuffer[ofs] = ch1;
                                    ch1 = ch;
                                    ofs++;
                                }

                                if (dwCurrentCharOffset < dwLastCharOffset)
                                {
                                    if (!Write(m_pchBuffer+dwCurrentCharOffset,dwLastCharOffset-dwCurrentCharOffset)) return FALSE;

                                    if (m_LinesScrolled)
                                    {
                                        if (m_LinesScrolled > FristCharCursorPosition.Y) return FALSE;
                                        Cursor.Y = SHORT(Cursor.Y - m_LinesScrolled);
                                    }
                                    // Update cursor position
                                    m_CursorPosition = Cursor;
                                    if (!SetConsoleCursorPosition(m_hStdOut,m_CursorPosition)) return FALSE;
                                }
                            }
                        }
                        pch++;
                    }
                }
            }
            else
#endif
      if (InputRecord.Event.KeyEvent.wVirtualKeyCode == VK_LEFT)
            {
                if (blnCompletionMode) blnCompletionMode = FALSE;
                if (dwCurrentCharOffset)
                {
                    if (InputRecord.Event.KeyEvent.dwControlKeyState & (LEFT_CTRL_PRESSED|RIGHT_CTRL_PRESSED))
                    {
                        TCHAR *pchWordBegin = m_pchBuffer+dwCurrentCharOffset-1;

                        while (pchWordBegin > m_pchBuffer)
                        {
                            if (!_istspace(*pchWordBegin)) break;
                            pchWordBegin--;
                        }

                        while (pchWordBegin > m_pchBuffer)
                        {
                            if (_istspace(*(pchWordBegin-1))) break;
                            pchWordBegin--;
                        }

                        ASSERT(pchWordBegin >= m_pchBuffer);
                        dwCurrentCharOffset = pchWordBegin - m_pchBuffer;

                        ASSERT(dwCurrentCharOffset < dwLastCharOffset);

                        m_CursorPosition.X = X_CURSOR_POSITION_FROM_OFFSET(dwCurrentCharOffset);
                        m_CursorPosition.Y = Y_CURSOR_POSITION_FROM_OFFSET(dwCurrentCharOffset);
                        VERIFY(SetConsoleCursorPosition(m_hStdOut,m_CursorPosition));
                    }
                    else
                    {
                        dwCurrentCharOffset--;
                        if (m_CursorPosition.X)
                        {
                            m_CursorPosition.X--;
                        }
                        else
                        {
                            m_CursorPosition.X = SHORT(m_BufferSize.X-1);
                            ASSERT(m_CursorPosition.Y);
                            m_CursorPosition.Y--;
                        }
                        VERIFY(SetConsoleCursorPosition(m_hStdOut,m_CursorPosition));
                    }
                }
            }
            else if (InputRecord.Event.KeyEvent.wVirtualKeyCode == VK_RIGHT)
            {
                if (blnCompletionMode) blnCompletionMode = FALSE;
                if (dwCurrentCharOffset < dwLastCharOffset)
                {
                    if (InputRecord.Event.KeyEvent.dwControlKeyState & (LEFT_CTRL_PRESSED|RIGHT_CTRL_PRESSED))
                    {
                        TCHAR *pchWordBegin = m_pchBuffer+dwCurrentCharOffset;

                        while ((DWORD)(pchWordBegin - m_pchBuffer) < dwLastCharOffset)
                        {
                            if (_istspace(*pchWordBegin)) break;
                            pchWordBegin++;
                        }

                        while ((DWORD)(pchWordBegin - m_pchBuffer) < dwLastCharOffset)
                        {
                            if (!_istspace(*pchWordBegin)) break;
                            pchWordBegin++;
                        }

                        dwCurrentCharOffset = pchWordBegin - m_pchBuffer;
                        ASSERT(dwCurrentCharOffset <= dwLastCharOffset);
                        m_CursorPosition.X = X_CURSOR_POSITION_FROM_OFFSET(dwCurrentCharOffset);
                        m_CursorPosition.Y = Y_CURSOR_POSITION_FROM_OFFSET(dwCurrentCharOffset);
                        VERIFY(SetConsoleCursorPosition(m_hStdOut,m_CursorPosition));
                    }
                    else
                    {
                        dwCurrentCharOffset++;
                        m_CursorPosition.X++;
                        if (m_CursorPosition.X == m_BufferSize.X)
                        {
                            m_CursorPosition.Y++;
                            m_CursorPosition.X = 0;
                        }
                        VERIFY(SetConsoleCursorPosition(m_hStdOut,m_CursorPosition));
                    }
                }
            }
            else if (InputRecord.Event.KeyEvent.wVirtualKeyCode == VK_HOME)
            {
                if (blnCompletionMode) blnCompletionMode = FALSE;
                dwCurrentCharOffset = 0;
                m_CursorPosition = FristCharCursorPosition;
                VERIFY(SetConsoleCursorPosition(m_hStdOut,m_CursorPosition));
            }
            else if (InputRecord.Event.KeyEvent.wVirtualKeyCode == VK_END)
            {
                if (blnCompletionMode) blnCompletionMode = FALSE;
                dwCurrentCharOffset = dwLastCharOffset;
                m_CursorPosition.X = X_CURSOR_POSITION_FROM_OFFSET(dwLastCharOffset);
                m_CursorPosition.Y = Y_CURSOR_POSITION_FROM_OFFSET(dwLastCharOffset);
                VERIFY(SetConsoleCursorPosition(m_hStdOut,m_CursorPosition));
            }
            else if (InputRecord.Event.KeyEvent.wVirtualKeyCode == VK_UP)
            {
                if (blnCompletionMode) blnCompletionMode = FALSE;
                dwHistoryIndex++;
                const TCHAR *pchHistoryLine = m_History.GetHistoryLine(dwHistoryIndex-1);
                if (pchHistoryLine)
                {
                    if (dwLastCharOffset)
                    {
                        _tcsnset(m_pchBuffer,_T(' '),dwLastCharOffset);
                        m_CursorPosition = FristCharCursorPosition;
                        VERIFY(SetConsoleCursorPosition(m_hStdOut,m_CursorPosition));
                        VERIFY(Write(m_pchBuffer,dwLastCharOffset));
                        dwCurrentCharOffset = dwLastCharOffset = 0;
                        m_CursorPosition = FristCharCursorPosition;
                        VERIFY(SetConsoleCursorPosition(m_hStdOut,m_CursorPosition));
                    }
                    dwCurrentCharOffset = dwLastCharOffset = _tcslen(pchHistoryLine);
                    if (dwLastCharOffset >= m_dwBufferSize)
                    {
                        ASSERT(FALSE);
                        return FALSE;
                    }
                    _tcscpy(m_pchBuffer,pchHistoryLine);
                    if (!Write(m_pchBuffer)) return FALSE;
                }
                else
                {
                    dwHistoryIndex--;
                }
            }
            else if (InputRecord.Event.KeyEvent.wVirtualKeyCode == VK_DOWN)
            {
                if (blnCompletionMode) blnCompletionMode = FALSE;
                if (dwHistoryIndex)
                {
                    dwHistoryIndex--;
                    const TCHAR *pchHistoryLine = m_History.GetHistoryLine(dwHistoryIndex-1);
                    if (dwLastCharOffset)
                    {
                        _tcsnset(m_pchBuffer,_T(' '),dwLastCharOffset);
                        m_CursorPosition = FristCharCursorPosition;
                        VERIFY(SetConsoleCursorPosition(m_hStdOut,m_CursorPosition));
                        VERIFY(Write(m_pchBuffer,dwLastCharOffset));
                        dwCurrentCharOffset = dwLastCharOffset = 0;
                        m_CursorPosition = FristCharCursorPosition;
                        VERIFY(SetConsoleCursorPosition(m_hStdOut,m_CursorPosition));
                    }
                    if (pchHistoryLine)
                    {
                        dwCurrentCharOffset = dwLastCharOffset = _tcslen(pchHistoryLine);
                        if (dwLastCharOffset >= m_dwBufferSize)
                        {
                            ASSERT(FALSE);
                            return FALSE;
                        }
                        _tcscpy(m_pchBuffer,pchHistoryLine);
                        if (!Write(m_pchBuffer)) return FALSE;
                    }
                }
            }
            else if ((InputRecord.Event.KeyEvent.wVirtualKeyCode == VK_DELETE)&&
                (dwLastCharOffset))
            {
                // Move the characters if any...
                ASSERT(dwLastCharOffset);
                DWORD dwCharOffset = dwCurrentCharOffset;
                if (dwCharOffset < dwLastCharOffset)
                {
                    while(dwCharOffset < dwLastCharOffset)
                    {
                        m_pchBuffer[dwCharOffset] = m_pchBuffer[dwCharOffset+1];
                        dwCharOffset++;
                    }

                    m_pchBuffer[dwLastCharOffset-1] = _T(' ');

                    // Save cursor position
                    COORD Cursor = m_CursorPosition;

                    if (!Write(m_pchBuffer+dwCurrentCharOffset,dwLastCharOffset-dwCurrentCharOffset)) return FALSE;

                    dwLastCharOffset--;

                    // Update cursor position
                    m_CursorPosition = Cursor;
                    if (!SetConsoleCursorPosition(m_hStdOut,m_CursorPosition)) return FALSE;
                }

            }
//          else if ((InputRecord.Event.KeyEvent.wVirtualKeyCode == VK_PAUSE)&&
//              (InputRecord.Event.KeyEvent.dwControlKeyState & (LEFT_CTRL_PRESSED|RIGHT_CTRL_PRESSED)))
//          {
//                  if (!GenerateConsoleCtrlEvent(CTRL_BREAK_EVENT,0)) return FALSE;
//          }
        }
        else if ((ch == 27) && dwLastCharOffset &&
            (InputRecord.Event.KeyEvent.wVirtualKeyCode == VK_ESCAPE))
        {
            if (blnCompletionMode) blnCompletionMode = FALSE;
            _tcsnset(m_pchBuffer,_T(' '),dwLastCharOffset);
            m_CursorPosition = FristCharCursorPosition;
            VERIFY(SetConsoleCursorPosition(m_hStdOut,m_CursorPosition));
            VERIFY(Write(m_pchBuffer,dwLastCharOffset));
            dwCurrentCharOffset = dwLastCharOffset = 0;
            m_CursorPosition = FristCharCursorPosition;
            VERIFY(SetConsoleCursorPosition(m_hStdOut,m_CursorPosition));
        }
        else if (ch == _T('\r'))
        {   // carriage return
            if (!SetConsoleCursorPosition(m_hStdOut,m_CursorPosition = FristCharCursorPosition)) return FALSE;
            ASSERT(dwLastCharOffset <= m_dwBufferSize);
            m_pchBuffer[dwLastCharOffset] = 0;  // terminate string in buffer
            ret = Write(m_pchBuffer);
            m_History.AddHistoryLine(m_pchBuffer);
            static TCHAR strLF[] = _T("\n");
            ret = Write(strLF);
            break;
        }
        else if (ch == _T('\b'))
        {   // backspace
            if (blnCompletionMode) blnCompletionMode = FALSE;
            if ((dwCurrentCharOffset) && ((m_CursorPosition.X != 0) || (m_CursorPosition.Y != 0)))
            {
                // Calculate new cursor position
                COORD NewCursorPosition;
                if (m_CursorPosition.X)
                {
                    NewCursorPosition.X = SHORT(m_CursorPosition.X-1);
                    NewCursorPosition.Y = m_CursorPosition.Y;
                }
                else
                {
                    ASSERT(m_BufferSize.X);
                    NewCursorPosition.X = SHORT(m_BufferSize.X-1);
                    ASSERT(m_CursorPosition.Y);
                    NewCursorPosition.Y = SHORT(m_CursorPosition.Y-1);
                }

                // Move the characters if any...
                ASSERT(dwLastCharOffset);
                DWORD dwCharOffset = dwCurrentCharOffset-1;
                while(dwCharOffset < dwLastCharOffset-1)
                {
                    m_pchBuffer[dwCharOffset] = m_pchBuffer[dwCharOffset+1];
                    dwCharOffset++;
                }

                m_pchBuffer[dwLastCharOffset-1] = _T(' ');

                dwCurrentCharOffset--;
                m_CursorPosition = NewCursorPosition;
                if (!Write(m_pchBuffer+dwCurrentCharOffset,dwLastCharOffset-dwCurrentCharOffset)) return FALSE;

                // Update cursor position
                m_CursorPosition = NewCursorPosition;
                if (!SetConsoleCursorPosition(m_hStdOut,m_CursorPosition)) return FALSE;

                dwLastCharOffset--;
            }
        }
        else if (ch == _T('\t'))
        { // Tab

            if (!blnCompletionMode) // If tab was pressed after non-tab. We enter in completion mode.
            {
        // Initialize completion index
                if (InputRecord.Event.KeyEvent.dwControlKeyState & SHIFT_PRESSED)  // If shift was pressed
                    nCompletionIndex = (unsigned long long) -1; // Last completion
                else
                    nCompletionIndex = 0; // First completion

        // Find completion offset. It points at char after first non-quoted whitespace.
                dwCompletionOffset = dwCurrentCharOffset;
                BOOL blnQuotedParameter = FALSE;
                while(dwCompletionOffset)
                {
                    dwCompletionOffset--;
                    if (m_pchBuffer[dwCompletionOffset] == _T('\"'))
                    {
                        blnQuotedParameter = !blnQuotedParameter;
                    }
                    else if (!blnQuotedParameter && _istspace(m_pchBuffer[dwCompletionOffset]))
                    { // Found ! We are not inside quored parameter and we are on whitespace.
                        dwCompletionOffset++; // dwCompletionOffset must point at char AFTER first non-quoted whitespace.
                        break;
                    }
                }

                ASSERT(dwCompletionOffset <= dwCurrentCharOffset);

        // Save not changing part (context) of completion in m_pchBuffer1
                _tcsncpy(m_pchBuffer1,m_pchBuffer,dwCompletionOffset);
                m_pchBuffer1[dwCompletionOffset] = 0;

        // Size of changing part
                dwCompletionStringSize = dwCurrentCharOffset-dwCompletionOffset;

        // Save intial changing part of completion in m_pchBuffer2
                if (dwCompletionStringSize)
                    _tcsncpy(m_pchBuffer2,m_pchBuffer+dwCompletionOffset,dwCompletionStringSize);
                m_pchBuffer2[dwCompletionStringSize] = 0;

        // Calculate cursor position of point between changing and not changing ports
                CompletionPosition.X = X_CURSOR_POSITION_FROM_OFFSET(dwCompletionOffset);
                CompletionPosition.Y = Y_CURSOR_POSITION_FROM_OFFSET(dwCompletionOffset);
            } // if first time tab

            const TCHAR *pchCompletion = NULL;

      // Direction
            BOOL blnForward = !(InputRecord.Event.KeyEvent.dwControlKeyState & SHIFT_PRESSED);

            if (m_pfReplaceCompletionCallback)  // If we are using replace completion callback
                pchCompletion = m_pfReplaceCompletionCallback(nCompletionIndex,
                                                      blnCompletionMode?&blnForward:NULL, // If this is first time we call the completion callback, do not change completion index
                                                      m_pchBuffer1,m_pchBuffer2);

            if (pchCompletion) // If completion found
            {
                // Set cursor position to compeltion position
                m_CursorPosition = CompletionPosition;
                if (!SetConsoleCursorPosition(m_hStdOut,m_CursorPosition))
          return FALSE;

                // Calculate buffer free space
                ASSERT(m_dwBufferSize > dwCompletionOffset);
                DWORD dwFree = m_dwBufferSize - dwCompletionOffset - 1;

        // Save old completion string size
                DWORD dwOldCompletionStringSize = dwCompletionStringSize;

                // Write completion string to buffer
                dwCompletionStringSize = _tcslen(pchCompletion);

        // If there is not enough space in buffer, so we truncate the completion
                if (dwCompletionStringSize > dwFree)
                    dwCompletionStringSize = dwFree;

                if (dwCompletionStringSize)
                {
          // Copy competion into main buffer
                    _tcsncpy(m_pchBuffer+dwCompletionOffset,pchCompletion,dwCompletionStringSize);

                    // Write completion string to console
                    if (!Write(m_pchBuffer+dwCompletionOffset,dwCompletionStringSize))
            return FALSE;

          // Set new offsets
                    dwCurrentCharOffset = dwLastCharOffset = dwCompletionOffset + dwCompletionStringSize;

                    ASSERT(dwLastCharOffset < m_dwBufferSize);
                }

                // Erase rest from previous completion string, if the new completion is shorter than old
                if (dwOldCompletionStringSize > dwCompletionStringSize)
                {
                    _tcsnset(m_pchBuffer+dwCompletionOffset+dwCompletionStringSize,_T(' '),
                        dwOldCompletionStringSize - dwCompletionStringSize);

                    // Save cursor position
                    COORD pos = m_CursorPosition;

                    if (!Write(m_pchBuffer+dwCompletionOffset+dwCompletionStringSize,
                        dwOldCompletionStringSize - dwCompletionStringSize))
                        return FALSE;

                    // Set cursor position
                    m_CursorPosition = pos;
                    if (!SetConsoleCursorPosition(m_hStdOut,m_CursorPosition))
            return FALSE;
                }
            } // If completion found

      // Ok, we are in completion mode
            blnCompletionMode = TRUE;
        }
        else if (_istprint(ch))
        {
            if (blnCompletionMode) blnCompletionMode = FALSE;
            if (dwLastCharOffset >= m_dwBufferSize-1)
            {
                ASSERT(dwLastCharOffset == m_dwBufferSize-1);
//              Beep(1000,100);
                continue;
            }
            TCHAR ch1;
            //if (m_blnInsetMode)
            ch1 = m_pchBuffer[dwCurrentCharOffset];
            m_pchBuffer[dwCurrentCharOffset] = ch;
            if ((m_blnInsetMode)||(dwCurrentCharOffset == dwLastCharOffset)) dwLastCharOffset++;
            dwCurrentCharOffset++;
            if (!Write(&ch,1)) return FALSE;
            if (m_blnInsetMode)
            {
                COORD Cursor = m_CursorPosition;
                DWORD ofs = dwCurrentCharOffset;

                while(ofs <= dwLastCharOffset)
                {
                    ch = m_pchBuffer[ofs];
                    m_pchBuffer[ofs] = ch1;
                    ch1 = ch;
                    ofs++;
                }

                if (dwCurrentCharOffset < dwLastCharOffset)
                {
                    if (!Write(m_pchBuffer+dwCurrentCharOffset,dwLastCharOffset-dwCurrentCharOffset)) return FALSE;

                    if (m_LinesScrolled)
                    {
                        if (m_LinesScrolled > FristCharCursorPosition.Y) return FALSE;
                        Cursor.Y = SHORT(Cursor.Y - m_LinesScrolled);
                    }
                    // Update cursor position
                    m_CursorPosition = Cursor;
                    if (!SetConsoleCursorPosition(m_hStdOut,m_CursorPosition)) return FALSE;
                }
            }
        }
        ASSERT(InputRecord.Event.KeyEvent.wRepeatCount);
        if (!InputRecord.Event.KeyEvent.wRepeatCount) return FALSE;
        if (--InputRecord.Event.KeyEvent.wRepeatCount) goto KeyRepeat;
    }
    m_blnMoreMode = blnOldMoreMode;
    return TRUE;
}

BOOL CConsole::GetTextAttribute(WORD& rwAttributes)
{
    rwAttributes = m_wAttributes;
    return TRUE;
}

// Parameters:
//      dwBufferSize - size in chars of the input line buffer
//
// Rerturns:
//      NULL - Failed.
//      pointer to the input buffer
TCHAR * CConsole::Init(DWORD dwBufferSize, DWORD dwMaxHistoryLines)
{
    if (m_hStdIn != INVALID_HANDLE_VALUE) VERIFY(CloseHandle(m_hStdIn));
    if (m_hStdOut != INVALID_HANDLE_VALUE) VERIFY(CloseHandle(m_hStdOut));

  m_hStdIn = GetStdHandle(STD_INPUT_HANDLE);

  if (m_hStdIn == INVALID_HANDLE_VALUE)
  {
//    _ftprintf(stderr,_T("GetStdHandle(STD_INPUT_HANDLE) failed. GetLastError return 0x%X\n"),(unsigned)GetLastError());
    goto Abort;
  }

  m_hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);

  if (m_hStdOut == INVALID_HANDLE_VALUE)
  {
//    _ftprintf(stderr,_T("GetStdHandle(STD_OUTPUT_HANDLE) failed. GetLastError return 0x%X\n"),(unsigned)GetLastError());
    goto Abort;
  }

    CONSOLE_SCREEN_BUFFER_INFO info;
    if (!GetConsoleScreenBufferInfo(m_hStdOut,&info))
  {
//    _ftprintf(stderr,_T("GetConsoleScreenBufferInfo(m_hStdOut,&info) failed. GetLastError return 0x%X\n"),(unsigned)GetLastError());
    if (GetLastError() == 6) // redirected output
      _ftprintf(stderr,_T("Redirection is not supported.\n"));

    goto Abort;
  }
    m_wAttributes = info.wAttributes;

    if (!m_blnOldInputModeSaved)
    {
        if (!GetConsoleMode(m_hStdIn,&m_dwOldInputMode))
    {
      if (GetLastError() == 6) // redirected input
        _ftprintf(stderr,_T("Redirection is not supported.\n"));
//      _ftprintf(stderr,_T("GetConsoleMode(0x%X,&m_dwOldINputMode) failed. GetLastError() returns 0x%X\n"),(int)m_hStdIn,GetLastError());
            goto Abort;
    }

        m_blnOldInputModeSaved = TRUE;
    }

//  _ftprintf(stderr,_T("Calling GetConsoleMode(0x%X,&m_dwOldOutputMode) ...\n"),(int)m_hStdOut);
    if (!m_blnOldOutputModeSaved)
    {
        if (!GetConsoleMode(m_hStdOut,&m_dwOldOutputMode))
            goto Abort;
//    _ftprintf(stderr,_T("Calling GetConsoleMode(0x%X,&m_dwOldOutputMode) done.\n"),(int)m_hStdOut);
        m_blnOldOutputModeSaved = TRUE;
    }

//  _ftprintf(stderr,_T("Calling SetConsoleMode(0x%X,0) ...\n"),(int)m_hStdIn);
  if (!SetConsoleMode(m_hStdIn,0))
    goto Abort;
  if (!SetConsoleMode(m_hStdOut,0))
    goto Abort;

    m_CursorPosition = info.dwCursorPosition;
    m_BufferSize = info.dwSize;

    CONSOLE_CURSOR_INFO cci;
    cci.bVisible = TRUE;
    cci.dwSize = m_blnInsetMode?m_dwInsertModeCursorHeight:m_dwOverwriteModeCursorHeight;

    if (!SetConsoleCursorInfo(m_hStdOut,&cci)) goto Abort;

    m_dwBufferSize = dwBufferSize;

    if (m_pchBuffer) delete m_pchBuffer;
    m_pchBuffer = NULL;

    if (m_pchBuffer1) delete m_pchBuffer1;
    m_pchBuffer1 = NULL;

    if (m_pchBuffer2) delete m_pchBuffer2;
    m_pchBuffer2 = NULL;

    m_pchBuffer = new (std::nothrow) TCHAR [dwBufferSize];
    if (!m_pchBuffer) goto Abort;
    m_pchBuffer[dwBufferSize-1] = 0;

    m_pchBuffer1 = new (std::nothrow) TCHAR [dwBufferSize];
    if (!m_pchBuffer1) goto Abort;
    m_pchBuffer1[dwBufferSize-1] = 0;

    m_pchBuffer2 = new (std::nothrow) TCHAR [dwBufferSize];
    if (!m_pchBuffer2) goto Abort;
    m_pchBuffer2[dwBufferSize-1] = 0;

    if (dwMaxHistoryLines)
    {
        if (!m_History.Init(dwBufferSize,dwMaxHistoryLines)) goto Abort;
    }

    return m_pchBuffer;

Abort:
    if (m_hStdIn != INVALID_HANDLE_VALUE) VERIFY(CloseHandle(m_hStdIn));
    m_hStdIn = INVALID_HANDLE_VALUE;

    if (m_hStdOut != INVALID_HANDLE_VALUE) VERIFY(CloseHandle(m_hStdOut));
    m_hStdOut = INVALID_HANDLE_VALUE;

    if (m_pchBuffer) delete[] m_pchBuffer;
    m_pchBuffer = NULL;

    if (m_pchBuffer1) delete[] m_pchBuffer1;
    m_pchBuffer1 = NULL;

    if (m_pchBuffer2) delete[] m_pchBuffer2;
    m_pchBuffer2 = NULL;

    m_dwBufferSize = 0;

    return NULL;
}

BOOL CConsole::WriteChar(TCHAR ch)
{
    CHAR_INFO ci;
    ci.Attributes = m_wAttributes;
#ifdef UNICODE
    ci.Char.UnicodeChar = ch;
#else
    ci.Char.AsciiChar = ch;
#endif
    static COORD BufferSize = {1,1};
    static COORD BufferCoord = {0,0};
    SMALL_RECT Dest;
    Dest.Bottom = Dest.Top = m_CursorPosition.Y;
    Dest.Left = Dest.Right = m_CursorPosition.X;
    return WriteConsoleOutput(m_hStdOut,&ci,BufferSize,BufferCoord,&Dest);
}

void CConsole::BeginScrollingOperation()
{
    m_Lines = 0;
}

BOOL CConsole::WriteString(const TCHAR *pchString, COORD Position)
{
    CHAR_INFO ciBuffer[256];
    int nSize = _tcslen(pchString);
    if ((nSize > 256)||(nSize <= 0))
    {
        ASSERT(FALSE);
        return FALSE;
    }

    COORD BufferSize;
    BufferSize.X = (SHORT)nSize;
    BufferSize.Y = 1;
    static COORD BufferCoord = {0,0};
    SMALL_RECT Dest;
    Dest.Bottom = Dest.Top = Position.Y;
    Dest.Right = SHORT((Dest.Left = Position.X) + nSize - 1);

    while(nSize--)
    {
        ciBuffer[nSize].Attributes = m_wAttributes;
#ifdef UNICODE
        ciBuffer[nSize].Char.UnicodeChar = pchString[nSize];
#else
        ciBuffer[nSize].Char.AsciiChar = pchString[nSize];
#endif
    }

    return WriteConsoleOutput(m_hStdOut,ciBuffer,BufferSize,BufferCoord,&Dest);
}

BOOL CConsole::SetInsertMode(BOOL blnInsetMode)
{
    if (m_hStdOut == INVALID_HANDLE_VALUE) return FALSE;

    CONSOLE_CURSOR_INFO cci;
    cci.bVisible = TRUE;
    cci.dwSize = blnInsetMode?m_dwInsertModeCursorHeight:m_dwOverwriteModeCursorHeight;

    BOOL ret = SetConsoleCursorInfo(m_hStdOut,&cci);
    if (ret) m_blnInsetMode = blnInsetMode;
    return ret;
}



void CConsole::SetReplaceCompletionCallback(ReplaceCompletionCallback pfCallback)
{
    m_pfReplaceCompletionCallback = pfCallback;
}


void CConsole::DisableWrite()
{
    m_blnDisableWrite = TRUE;
    INPUT_RECORD InputRecord;
    DWORD dwRecordsWriten;
    InputRecord.EventType = KEY_EVENT;
    InputRecord.Event.KeyEvent.bKeyDown = TRUE;
#ifdef UNICODE
    InputRecord.Event.KeyEvent.uChar.UnicodeChar = L' ';
#else
    InputRecord.Event.KeyEvent.uChar.AsciiChar = ' ';
#endif
    BOOL ret = WriteConsoleInput(m_hStdIn,&InputRecord,1,&dwRecordsWriten);
    ASSERT(ret);
}

void CConsole::EnableWrite()
{
    m_blnDisableWrite = FALSE;
}