[jmorlan] 47584: [WIN32CSR] Implement some basic line editing capability

Author: jmorlan
Date: Sat Jun  5 08:10:53 2010
New Revision: 47584

URL: http://svn.reactos.org/svn/reactos?rev=47584&view=rev
Log:
[WIN32CSR] Implement some basic line editing capability

Modified:
    trunk/reactos/subsystems/win32/csrss/win32csr/coninput.c
    trunk/reactos/subsystems/win32/csrss/win32csr/win32csr.rbuild

Modified: trunk/reactos/subsystems/win32/csrss/win32csr/coninput.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/csrss/win3...
==============================================================================
--- trunk/reactos/subsystems/win32/csrss/win32csr/coninput.c [iso-8859-1] (original)
+++ trunk/reactos/subsystems/win32/csrss/win32csr/coninput.c [iso-8859-1] Sat Jun  5 08:10:53 2010
@@ -23,24 +23,142 @@
 /* FUNCTIONS *****************************************************************/

static VOID
+ConioLineInputSetPos(PCSRSS_CONSOLE Console, UINT Pos)
+{
+    if (Pos != Console->LinePos && Console->Mode & ENABLE_ECHO_INPUT)
+    {
+        PCSRSS_SCREEN_BUFFER Buffer = Console->ActiveBuffer;
+        UINT OldCursorX = Buffer->CurrentX;
+        UINT OldCursorY = Buffer->CurrentY;
+        INT XY = OldCursorY * Buffer->MaxX + OldCursorX;
+
+        XY += (Pos - Console->LinePos);
+        if (XY < 0)
+            XY = 0;
+        else if (XY >= Buffer->MaxY * Buffer->MaxX)
+            XY = Buffer->MaxY * Buffer->MaxX - 1;
+
+        Buffer->CurrentX = XY % Buffer->MaxX;
+        Buffer->CurrentY = XY / Buffer->MaxX;
+        ConioSetScreenInfo(Console, Buffer, OldCursorX, OldCursorY);
+    }
+
+    Console->LinePos = Pos;
+}
+
+static VOID
+ConioLineInputEdit(PCSRSS_CONSOLE Console, UINT NumToDelete, UINT NumToInsert, WCHAR *Insertion)
+{
+    UINT Pos = Console->LinePos;
+    UINT NewSize = Console->LineSize - NumToDelete + NumToInsert;
+    INT i;
+
+    /* Make sure there's always enough room for ending \r\n */
+    if (NewSize + 2 > Console->LineMaxSize)
+        return;
+
+    memmove(&Console->LineBuffer[Pos + NumToInsert],
+            &Console->LineBuffer[Pos + NumToDelete],
+            (Console->LineSize - (Pos + NumToDelete)) * sizeof(WCHAR));
+    memcpy(&Console->LineBuffer[Pos], Insertion, NumToInsert * sizeof(WCHAR));
+
+    if (Console->Mode & ENABLE_ECHO_INPUT)
+    {
+        for (i = Pos; i < NewSize; i++)
+        {
+            CHAR AsciiChar;
+            WideCharToMultiByte(Console->OutputCodePage, 0,
+                                &Console->LineBuffer[i], 1,
+                                &AsciiChar, 1, NULL, NULL);
+            ConioWriteConsole(Console, Console->ActiveBuffer, &AsciiChar, 1, TRUE);
+        }
+        for (; i < Console->LineSize; i++)
+        {
+            ConioWriteConsole(Console, Console->ActiveBuffer, " ", 1, TRUE);
+        }
+        Console->LinePos = i;
+    }
+
+    Console->LineSize = NewSize;
+    ConioLineInputSetPos(Console, Pos + NumToInsert);
+}
+
+static VOID
 ConioLineInputKeyDown(PCSRSS_CONSOLE Console, KEY_EVENT_RECORD *KeyEvent)
 {
+    UINT Pos = Console->LinePos;
+    switch (KeyEvent->wVirtualKeyCode)
+    {
+    case VK_ESCAPE:
+        /* Clear entire line */
+        ConioLineInputSetPos(Console, 0);
+        ConioLineInputEdit(Console, Console->LineSize, 0, NULL);
+        return;
+    case VK_HOME:
+        /* Move to start of line. With ctrl, erase everything left of cursor */
+        ConioLineInputSetPos(Console, 0);
+        if (KeyEvent->dwControlKeyState & (LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED))
+            ConioLineInputEdit(Console, Pos, 0, NULL);
+        return;
+    case VK_END:
+        /* Move to end of line. With ctrl, erase everything right of cursor */
+        if (KeyEvent->dwControlKeyState & (LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED))
+            ConioLineInputEdit(Console, Console->LineSize - Pos, 0, NULL);
+        else
+            ConioLineInputSetPos(Console, Console->LineSize);
+        return;
+    case VK_LEFT:
+        /* Move left. With ctrl, move to beginning of previous word */
+        if (KeyEvent->dwControlKeyState & (LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED))
+        {
+            while (Pos > 0 && Console->LineBuffer[Pos - 1] == L' ') Pos--;
+            while (Pos > 0 && Console->LineBuffer[Pos - 1] != L' ') Pos--;
+        }
+        else
+        {
+            Pos -= (Pos > 0);
+        }
+        ConioLineInputSetPos(Console, Pos);
+        return;
+    case VK_RIGHT:
+        /* Move right. With ctrl, move to beginning of next word */
+        if (KeyEvent->dwControlKeyState & (LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED))
+        {
+            while (Pos < Console->LineSize && Console->LineBuffer[Pos] != L' ') Pos++;
+            while (Pos < Console->LineSize && Console->LineBuffer[Pos] == L' ') Pos++;
+        }
+        else
+        {
+            Pos += (Pos < Console->LineSize);
+        }
+        ConioLineInputSetPos(Console, Pos);
+        return;
+    case VK_DELETE:
+        /* Remove character to right of cursor */
+        if (Pos != Console->LineSize)
+            ConioLineInputEdit(Console, 1, 0, NULL);
+        return;
+    case VK_F6:
+        /* Insert a ^Z character */
+        KeyEvent->uChar.UnicodeChar = 26;
+        break;
+    }
+    
     if (KeyEvent->uChar.UnicodeChar == L'\b' && Console->Mode & ENABLE_PROCESSED_INPUT)
     {
-        /* backspace handling - if we are in charge of echoing it then we handle it here
-         * otherwise we treat it like a normal char.
-         */
-        if (Console->LineSize > 0)
-        {
-            Console->LineSize--;
-            if (Console->Mode & ENABLE_ECHO_INPUT)
-                ConioWriteConsole(Console, Console->ActiveBuffer, "\b", 1, TRUE);
+        /* backspace handling - if processed input enabled then we handle it here
+         * otherwise we treat it like a normal char. */
+        if (Pos > 0)
+        {
+            ConioLineInputSetPos(Console, Pos - 1);
+            ConioLineInputEdit(Console, 1, 0, NULL);
         }
     }
     else if (KeyEvent->uChar.UnicodeChar == L'\r')
     {
         HistoryAddEntry(Console);

+        ConioLineInputSetPos(Console, Console->LineSize);
         Console->LineBuffer[Console->LineSize++] = L'\r';
         if (Console->Mode & ENABLE_ECHO_INPUT)
             ConioWriteConsole(Console, Console->ActiveBuffer, "\r", 1, TRUE);
@@ -55,19 +173,8 @@
     }
     else if (KeyEvent->uChar.UnicodeChar != L'\0')
     {
-        if (Console->LineSize + 2 < Console->LineMaxSize)
-        {
-            Console->LineBuffer[Console->LineSize++] = KeyEvent->uChar.UnicodeChar;
-            /* echo to screen if enabled */
-            if (Console->Mode & ENABLE_ECHO_INPUT)
-            {
-                CHAR AsciiChar;
-                WideCharToMultiByte(Console->OutputCodePage, 0,
-                                    &KeyEvent->uChar.UnicodeChar, 1, 
-                                    &AsciiChar, 1, NULL, NULL);
-                ConioWriteConsole(Console, Console->ActiveBuffer, &AsciiChar, 1, TRUE);
-            }
-        }
+        /* Normal character */
+        ConioLineInputEdit(Console, 0, 1, &KeyEvent->uChar.UnicodeChar);
     }
 }

Modified: trunk/reactos/subsystems/win32/csrss/win32csr/win32csr.rbuild
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/csrss/win3...
==============================================================================
--- trunk/reactos/subsystems/win32/csrss/win32csr/win32csr.rbuild [iso-8859-1] (original)
+++ trunk/reactos/subsystems/win32/csrss/win32csr/win32csr.rbuild [iso-8859-1] Sat Jun  5 08:10:53 2010
@@ -26,7 +26,7 @@
    <file>guiconsole.c</file>
    <file>handle.c</file>
    <file>harderror.c</file>
-    <file>history.c</file>
+	<file>history.c</file>
    <file>tuiconsole.c</file>
    <file>appswitch.c</file>
    <file>win32csr.rc</file>