(svn r13231) -Codechange: split the core console code and the console GUI.

3 files changed, 378 insertions, 335 deletions

diff --git a/src/console.cpp b/src/console.cpp
index 4227975b9..7f28c99d7 100644
--- a/src/console.cpp
+++ b/src/console.cpp
@@ -3,24 +3,15 @@
 /** @file console.cpp Handling of the in-game console. */
 
 #include "stdafx.h"
-#include "openttd.h"
-#include "gui.h"
-#include "textbuf_gui.h"
-#include "window_gui.h"
-#include "console_gui.h"
-#include "variables.h"
-#include <stdarg.h>
-#include <string.h>
 #include "console_internal.h"
-#include "network/network.h"
 #include "network/network_data.h"
 #include "network/network_server.h"
 #include "core/alloc_func.hpp"
-#include "window_func.h"
 #include "string_func.h"
-#include "gfx_func.h"
 #include "rev.h"
 
+#include <stdarg.h>
+
 #include "table/strings.h"
 
 #define ICON_BUFFER 79
@@ -36,254 +27,21 @@ IConsoleCmd   *_iconsole_cmds;    ///< list of registred commands
 IConsoleVar   *_iconsole_vars;    ///< list of registred vars
 IConsoleAlias *_iconsole_aliases; ///< list of registred aliases
 
-/* console modes */
-IConsoleModes _iconsole_mode;
-
-/* ** main console ** */
-static char *_iconsole_buffer[ICON_BUFFER + 1];
-static uint16 _iconsole_cbuffer[ICON_BUFFER + 1];
-static Textbuf _iconsole_cmdline;
-
 /* ** stdlib ** */
 byte _stdlib_developer = 1;
 bool _stdlib_con_developer = false;
 FILE *_iconsole_output_file;
 
-/* ** main console cmd buffer ** */
-static char *_iconsole_history[ICON_HISTORY_SIZE];
-static byte _iconsole_historypos;
-
-/* *************** *
- *  end of header  *
- * *************** */
-
-static void IConsoleClearCommand()
-{
-	memset(_iconsole_cmdline.buf, 0, ICON_CMDLN_SIZE);
-	_iconsole_cmdline.length = 0;
-	_iconsole_cmdline.width = 0;
-	_iconsole_cmdline.caretpos = 0;
-	_iconsole_cmdline.caretxoffs = 0;
-	SetWindowDirty(FindWindowById(WC_CONSOLE, 0));
-}
-
-static inline void IConsoleResetHistoryPos() {_iconsole_historypos = ICON_HISTORY_SIZE - 1;}
-
-
-static void IConsoleHistoryAdd(const char *cmd);
-static void IConsoleHistoryNavigate(int direction);
-
-struct IConsoleWindow : Window
-{
-	static byte scroll;
-
-	IConsoleWindow(const WindowDesc *desc) : Window(desc)
-	{
-		_iconsole_mode = ICONSOLE_OPENED;
-		SetBit(_no_scroll, SCROLL_CON); // override cursor arrows; the gamefield will not scroll
-
-		this->height = _screen.height / 3;
-		this->width  = _screen.width;
-	}
-
-	~IConsoleWindow()
-	{
-		_iconsole_mode = ICONSOLE_CLOSED;
-		ClrBit(_no_scroll, SCROLL_CON);
-	}
-
-	virtual void OnPaint()
-	{
-		int i = IConsoleWindow::scroll;
-		int max = (this->height / ICON_LINE_HEIGHT) - 1;
-		int delta = 0;
-		GfxFillRect(this->left, this->top, this->width, this->height - 1, 0);
-		while ((i > 0) && (i > IConsoleWindow::scroll - max) && (_iconsole_buffer[i] != NULL)) {
-			DoDrawString(_iconsole_buffer[i], 5,
-				this->height - (IConsoleWindow::scroll + 2 - i) * ICON_LINE_HEIGHT, _iconsole_cbuffer[i]);
-			i--;
-		}
-		/* If the text is longer than the window, don't show the starting ']' */
-		delta = this->width - 10 - _iconsole_cmdline.width - ICON_RIGHT_BORDERWIDTH;
-		if (delta > 0) {
-			DoDrawString("]", 5, this->height - ICON_LINE_HEIGHT, CC_COMMAND);
-			delta = 0;
-		}
-
-		DoDrawString(_iconsole_cmdline.buf, 10 + delta, this->height - ICON_LINE_HEIGHT, CC_COMMAND);
-
-		if (_iconsole_cmdline.caret) {
-			DoDrawString("_", 10 + delta + _iconsole_cmdline.caretxoffs, this->height - ICON_LINE_HEIGHT, TC_WHITE);
-		}
-	}
-
-	virtual void OnMouseLoop()
-	{
-		if (HandleCaret(&_iconsole_cmdline)) this->SetDirty();
-	}
-
-	virtual EventState OnKeyPress(uint16 key, uint16 keycode)
-	{
-		switch (keycode) {
-			case WKC_UP:
-				IConsoleHistoryNavigate(+1);
-				this->SetDirty();
-				break;
-
-			case WKC_DOWN:
-				IConsoleHistoryNavigate(-1);
-				this->SetDirty();
-				break;
-
-			case WKC_SHIFT | WKC_PAGEUP:
-				if (IConsoleWindow::scroll - (this->height / ICON_LINE_HEIGHT) - 1 < 0) {
-					IConsoleWindow::scroll = 0;
-				} else {
-					IConsoleWindow::scroll -= (this->height / ICON_LINE_HEIGHT) - 1;
-				}
-				this->SetDirty();
-				break;
-
-			case WKC_SHIFT | WKC_PAGEDOWN:
-				if (IConsoleWindow::scroll + (this->height / ICON_LINE_HEIGHT) - 1 > ICON_BUFFER) {
-					IConsoleWindow::scroll = ICON_BUFFER;
-				} else {
-					IConsoleWindow::scroll += (this->height / ICON_LINE_HEIGHT) - 1;
-				}
-				this->SetDirty();
-				break;
-
-			case WKC_SHIFT | WKC_UP:
-				if (IConsoleWindow::scroll <= 0) {
-					IConsoleWindow::scroll = 0;
-				} else {
-					--IConsoleWindow::scroll;
-				}
-				this->SetDirty();
-				break;
-
-			case WKC_SHIFT | WKC_DOWN:
-				if (IConsoleWindow::scroll >= ICON_BUFFER) {
-					IConsoleWindow::scroll = ICON_BUFFER;
-				} else {
-					++IConsoleWindow::scroll;
-				}
-				this->SetDirty();
-				break;
-
-			case WKC_BACKQUOTE:
-				IConsoleSwitch();
-				break;
-
-			case WKC_RETURN: case WKC_NUM_ENTER:
-				IConsolePrintF(CC_COMMAND, "] %s", _iconsole_cmdline.buf);
-				IConsoleHistoryAdd(_iconsole_cmdline.buf);
-
-				IConsoleCmdExec(_iconsole_cmdline.buf);
-				IConsoleClearCommand();
-				break;
-
-			case WKC_CTRL | WKC_RETURN:
-				_iconsole_mode = (_iconsole_mode == ICONSOLE_FULL) ? ICONSOLE_OPENED : ICONSOLE_FULL;
-				IConsoleResize(this);
-				MarkWholeScreenDirty();
-				break;
-
-			case (WKC_CTRL | 'V'):
-				if (InsertTextBufferClipboard(&_iconsole_cmdline)) {
-					IConsoleResetHistoryPos();
-					this->SetDirty();
-				}
-				break;
-
-			case (WKC_CTRL | 'L'):
-				IConsoleCmdExec("clear");
-				break;
-
-			case (WKC_CTRL | 'U'):
-				DeleteTextBufferAll(&_iconsole_cmdline);
-				this->SetDirty();
-				break;
-
-			case WKC_BACKSPACE: case WKC_DELETE:
-				if (DeleteTextBufferChar(&_iconsole_cmdline, keycode)) {
-					IConsoleResetHistoryPos();
-					this->SetDirty();
-				}
-				break;
-
-			case WKC_LEFT: case WKC_RIGHT: case WKC_END: case WKC_HOME:
-				if (MoveTextBufferPos(&_iconsole_cmdline, keycode)) {
-					IConsoleResetHistoryPos();
-					this->SetDirty();
-				}
-				break;
-
-			default:
-				if (IsValidChar(key, CS_ALPHANUMERAL)) {
-					IConsoleWindow::scroll = ICON_BUFFER;
-					InsertTextBufferChar(&_iconsole_cmdline, key);
-					IConsoleResetHistoryPos();
-					this->SetDirty();
-				} else {
-					return ES_NOT_HANDLED;
-				}
-		}
-		return ES_HANDLED;
-	}
-};
-
-byte IConsoleWindow::scroll = ICON_BUFFER;
-
-static const Widget _iconsole_window_widgets[] = {
-	{WIDGETS_END}
-};
-
-static const WindowDesc _iconsole_window_desc = {
-	0, 0, 2, 2, 2, 2,
-	WC_CONSOLE, WC_NONE,
-	WDF_STD_TOOLTIPS | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS,
-	_iconsole_window_widgets,
-};
-
 void IConsoleInit()
 {
 	_iconsole_output_file = NULL;
-	_iconsole_historypos = ICON_HISTORY_SIZE - 1;
-	_iconsole_mode = ICONSOLE_CLOSED;
-
 #ifdef ENABLE_NETWORK /* Initialize network only variables */
 	_redirect_console_to_client = 0;
 #endif
 
-	memset(_iconsole_history, 0, sizeof(_iconsole_history));
-	memset(_iconsole_buffer, 0, sizeof(_iconsole_buffer));
-	memset(_iconsole_cbuffer, 0, sizeof(_iconsole_cbuffer));
-	_iconsole_cmdline.buf = CallocT<char>(ICON_CMDLN_SIZE); // create buffer and zero it
-	_iconsole_cmdline.maxlength = ICON_CMDLN_SIZE;
+	IConsoleGUIInit();
 
-	IConsolePrintF(CC_WARNING, "OpenTTD Game Console Revision 7 - %s", _openttd_revision);
-	IConsolePrint(CC_WHITE,  "------------------------------------");
-	IConsolePrint(CC_WHITE,  "use \"help\" for more information");
-	IConsolePrint(CC_WHITE,  "");
 	IConsoleStdLibRegister();
-	IConsoleClearCommand();
-	IConsoleHistoryAdd("");
-}
-
-void IConsoleClearBuffer()
-{
-	uint i;
-	for (i = 0; i <= ICON_BUFFER; i++) {
-		free(_iconsole_buffer[i]);
-		_iconsole_buffer[i] = NULL;
-	}
-}
-
-static void IConsoleClear()
-{
-	free(_iconsole_cmdline.buf);
-	IConsoleClearBuffer();
 }
 
 static void IConsoleWriteToLogFile(const char *string)
@@ -313,86 +71,10 @@ bool CloseConsoleLogIfActive()
 
 void IConsoleFree()
 {
-	IConsoleClear();
+	IConsoleGUIFree();
 	CloseConsoleLogIfActive();
 }
 
-void IConsoleResize(Window *w)
-{
-	switch (_iconsole_mode) {
-		case ICONSOLE_OPENED:
-			w->height = _screen.height / 3;
-			w->width = _screen.width;
-			break;
-		case ICONSOLE_FULL:
-			w->height = _screen.height - ICON_BOTTOM_BORDERWIDTH;
-			w->width = _screen.width;
-			break;
-		default: return;
-	}
-
-	MarkWholeScreenDirty();
-}
-
-void IConsoleSwitch()
-{
-	switch (_iconsole_mode) {
-		case ICONSOLE_CLOSED:
-			new IConsoleWindow(&_iconsole_window_desc);
-			break;
-
-		case ICONSOLE_OPENED: case ICONSOLE_FULL:
-			DeleteWindowById(WC_CONSOLE, 0);
-			break;
-	}
-
-	MarkWholeScreenDirty();
-}
-
-void IConsoleClose() {if (_iconsole_mode == ICONSOLE_OPENED) IConsoleSwitch();}
-void IConsoleOpen()  {if (_iconsole_mode == ICONSOLE_CLOSED) IConsoleSwitch();}
-
-/**
- * Add the entered line into the history so you can look it back
- * scroll, etc. Put it to the beginning as it is the latest text
- * @param cmd Text to be entered into the 'history'
- */
-static void IConsoleHistoryAdd(const char *cmd)
-{
-	free(_iconsole_history[ICON_HISTORY_SIZE - 1]);
-
-	memmove(&_iconsole_history[1], &_iconsole_history[0], sizeof(_iconsole_history[0]) * (ICON_HISTORY_SIZE - 1));
-	_iconsole_history[0] = strdup(cmd);
-	IConsoleResetHistoryPos();
-}
-
-/**
- * Navigate Up/Down in the history of typed commands
- * @param direction Go further back in history (+1), go to recently typed commands (-1)
- */
-static void IConsoleHistoryNavigate(int direction)
-{
-	int i = _iconsole_historypos + direction;
-
-	/* watch out for overflows, just wrap around */
-	if (i < 0) i = ICON_HISTORY_SIZE - 1;
-	if (i >= ICON_HISTORY_SIZE) i = 0;
-
-	if (direction > 0)
-		if (_iconsole_history[i] == NULL) i = 0;
-
-	if (direction < 0) {
-		while (i > 0 && _iconsole_history[i] == NULL) i--;
-	}
-
-	_iconsole_historypos = i;
-	IConsoleClearCommand();
-	/* copy history to 'command prompt / bash' */
-	assert(_iconsole_history[i] != NULL && IsInsideMM(i, 0, ICON_HISTORY_SIZE));
-	ttd_strlcpy(_iconsole_cmdline.buf, _iconsole_history[i], _iconsole_cmdline.maxlength);
-	UpdateTextBufferSize(&_iconsole_cmdline);
-}
-
 /**
  * Handle the printing of text entered into the console or redirected there
  * by any other means. Text can be redirected to other players in a network game
@@ -427,18 +109,8 @@ void IConsolePrint(ConsoleColour color_code, const char *string)
 		return;
 	}
 
-	/* move up all the strings in the buffer one place and do the same for colour
-	 * to accomodate for the new command/message */
-	free(_iconsole_buffer[0]);
-	memmove(&_iconsole_buffer[0], &_iconsole_buffer[1], sizeof(_iconsole_buffer[0]) * ICON_BUFFER);
-	_iconsole_buffer[ICON_BUFFER] = str;
-
-	memmove(&_iconsole_cbuffer[0], &_iconsole_cbuffer[1], sizeof(_iconsole_cbuffer[0]) * ICON_BUFFER);
-	_iconsole_cbuffer[ICON_BUFFER] = color_code;
-
-	IConsoleWriteToLogFile(_iconsole_buffer[ICON_BUFFER]);
-
-	SetWindowDirty(FindWindowById(WC_CONSOLE, 0));
+	IConsoleWriteToLogFile(str);
+	IConsoleGUIPrint(color_code, str);
 }
 
 /**
diff --git a/src/console_gui.cpp b/src/console_gui.cpp
new file mode 100644
index 000000000..aac5f5ccc
--- /dev/null
+++ b/src/console_gui.cpp
@@ -0,0 +1,366 @@
+/* $Id$ */
+
+/** @file console.cpp Handling of the in-game console. */
+
+#include "stdafx.h"
+#include "openttd.h"
+#include "textbuf_gui.h"
+#include "window_gui.h"
+#include "console_gui.h"
+#include <stdarg.h>
+#include <string.h>
+#include "console_internal.h"
+#include "window_func.h"
+#include "string_func.h"
+#include "gfx_func.h"
+#include "core/math_func.hpp"
+#include "rev.h"
+
+#include "table/strings.h"
+
+#define ICON_BUFFER 79
+#define ICON_HISTORY_SIZE 20
+#define ICON_LINE_HEIGHT 12
+#define ICON_RIGHT_BORDERWIDTH 10
+#define ICON_BOTTOM_BORDERWIDTH 12
+#define ICON_MAX_ALIAS_LINES 40
+#define ICON_TOKEN_COUNT 20
+
+/* console modes */
+IConsoleModes _iconsole_mode;
+
+/* ** main console ** */
+static char *_iconsole_buffer[ICON_BUFFER + 1];
+static uint16 _iconsole_cbuffer[ICON_BUFFER + 1];
+static Textbuf _iconsole_cmdline;
+
+/* ** main console cmd buffer ** */
+static char *_iconsole_history[ICON_HISTORY_SIZE];
+static byte _iconsole_historypos;
+
+/* *************** *
+ *  end of header  *
+ * *************** */
+
+static void IConsoleClearCommand()
+{
+	memset(_iconsole_cmdline.buf, 0, ICON_CMDLN_SIZE);
+	_iconsole_cmdline.length = 0;
+	_iconsole_cmdline.width = 0;
+	_iconsole_cmdline.caretpos = 0;
+	_iconsole_cmdline.caretxoffs = 0;
+	SetWindowDirty(FindWindowById(WC_CONSOLE, 0));
+}
+
+static inline void IConsoleResetHistoryPos() {_iconsole_historypos = ICON_HISTORY_SIZE - 1;}
+
+
+static void IConsoleHistoryAdd(const char *cmd);
+static void IConsoleHistoryNavigate(int direction);
+
+struct IConsoleWindow : Window
+{
+	static byte scroll;
+
+	IConsoleWindow(const WindowDesc *desc) : Window(desc)
+	{
+		_iconsole_mode = ICONSOLE_OPENED;
+		SetBit(_no_scroll, SCROLL_CON); // override cursor arrows; the gamefield will not scroll
+
+		this->height = _screen.height / 3;
+		this->width  = _screen.width;
+	}
+
+	~IConsoleWindow()
+	{
+		_iconsole_mode = ICONSOLE_CLOSED;
+		ClrBit(_no_scroll, SCROLL_CON);
+	}
+
+	virtual void OnPaint()
+	{
+		int i = IConsoleWindow::scroll;
+		int max = (this->height / ICON_LINE_HEIGHT) - 1;
+		int delta = 0;
+		GfxFillRect(this->left, this->top, this->width, this->height - 1, 0);
+		while ((i > 0) && (i > IConsoleWindow::scroll - max) && (_iconsole_buffer[i] != NULL)) {
+			DoDrawString(_iconsole_buffer[i], 5,
+				this->height - (IConsoleWindow::scroll + 2 - i) * ICON_LINE_HEIGHT, _iconsole_cbuffer[i]);
+			i--;
+		}
+		/* If the text is longer than the window, don't show the starting ']' */
+		delta = this->width - 10 - _iconsole_cmdline.width - ICON_RIGHT_BORDERWIDTH;
+		if (delta > 0) {
+			DoDrawString("]", 5, this->height - ICON_LINE_HEIGHT, CC_COMMAND);
+			delta = 0;
+		}
+
+		DoDrawString(_iconsole_cmdline.buf, 10 + delta, this->height - ICON_LINE_HEIGHT, CC_COMMAND);
+
+		if (_iconsole_cmdline.caret) {
+			DoDrawString("_", 10 + delta + _iconsole_cmdline.caretxoffs, this->height - ICON_LINE_HEIGHT, TC_WHITE);
+		}
+	}
+
+	virtual void OnMouseLoop()
+	{
+		if (HandleCaret(&_iconsole_cmdline)) this->SetDirty();
+	}
+
+	virtual EventState OnKeyPress(uint16 key, uint16 keycode)
+	{
+		switch (keycode) {
+			case WKC_UP:
+				IConsoleHistoryNavigate(+1);
+				this->SetDirty();
+				break;
+
+			case WKC_DOWN:
+				IConsoleHistoryNavigate(-1);
+				this->SetDirty();
+				break;
+
+			case WKC_SHIFT | WKC_PAGEUP:
+				if (IConsoleWindow::scroll - (this->height / ICON_LINE_HEIGHT) - 1 < 0) {
+					IConsoleWindow::scroll = 0;
+				} else {
+					IConsoleWindow::scroll -= (this->height / ICON_LINE_HEIGHT) - 1;
+				}
+				this->SetDirty();
+				break;
+
+			case WKC_SHIFT | WKC_PAGEDOWN:
+				if (IConsoleWindow::scroll + (this->height / ICON_LINE_HEIGHT) - 1 > ICON_BUFFER) {
+					IConsoleWindow::scroll = ICON_BUFFER;
+				} else {
+					IConsoleWindow::scroll += (this->height / ICON_LINE_HEIGHT) - 1;
+				}
+				this->SetDirty();
+				break;
+
+			case WKC_SHIFT | WKC_UP:
+				if (IConsoleWindow::scroll <= 0) {
+					IConsoleWindow::scroll = 0;
+				} else {
+					--IConsoleWindow::scroll;
+				}
+				this->SetDirty();
+				break;
+
+			case WKC_SHIFT | WKC_DOWN:
+				if (IConsoleWindow::scroll >= ICON_BUFFER) {
+					IConsoleWindow::scroll = ICON_BUFFER;
+				} else {
+					++IConsoleWindow::scroll;
+				}
+				this->SetDirty();
+				break;
+
+			case WKC_BACKQUOTE:
+				IConsoleSwitch();
+				break;
+
+			case WKC_RETURN: case WKC_NUM_ENTER:
+				IConsolePrintF(CC_COMMAND, "] %s", _iconsole_cmdline.buf);
+				IConsoleHistoryAdd(_iconsole_cmdline.buf);
+
+				IConsoleCmdExec(_iconsole_cmdline.buf);
+				IConsoleClearCommand();
+				break;
+
+			case WKC_CTRL | WKC_RETURN:
+				_iconsole_mode = (_iconsole_mode == ICONSOLE_FULL) ? ICONSOLE_OPENED : ICONSOLE_FULL;
+				IConsoleResize(this);
+				MarkWholeScreenDirty();
+				break;
+
+			case (WKC_CTRL | 'V'):
+				if (InsertTextBufferClipboard(&_iconsole_cmdline)) {
+					IConsoleResetHistoryPos();
+					this->SetDirty();
+				}
+				break;
+
+			case (WKC_CTRL | 'L'):
+				IConsoleCmdExec("clear");
+				break;
+
+			case (WKC_CTRL | 'U'):
+				DeleteTextBufferAll(&_iconsole_cmdline);
+				this->SetDirty();
+				break;
+
+			case WKC_BACKSPACE: case WKC_DELETE:
+				if (DeleteTextBufferChar(&_iconsole_cmdline, keycode)) {
+					IConsoleResetHistoryPos();
+					this->SetDirty();
+				}
+				break;
+
+			case WKC_LEFT: case WKC_RIGHT: case WKC_END: case WKC_HOME:
+				if (MoveTextBufferPos(&_iconsole_cmdline, keycode)) {
+					IConsoleResetHistoryPos();
+					this->SetDirty();
+				}
+				break;
+
+			default:
+				if (IsValidChar(key, CS_ALPHANUMERAL)) {
+					IConsoleWindow::scroll = ICON_BUFFER;
+					InsertTextBufferChar(&_iconsole_cmdline, key);
+					IConsoleResetHistoryPos();
+					this->SetDirty();
+				} else {
+					return ES_NOT_HANDLED;
+				}
+		}
+		return ES_HANDLED;
+	}
+};
+
+byte IConsoleWindow::scroll = ICON_BUFFER;
+
+static const Widget _iconsole_window_widgets[] = {
+	{WIDGETS_END}
+};
+
+static const WindowDesc _iconsole_window_desc = {
+	0, 0, 2, 2, 2, 2,
+	WC_CONSOLE, WC_NONE,
+	WDF_STD_TOOLTIPS | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS,
+	_iconsole_window_widgets,
+};
+
+void IConsoleGUIInit()
+{
+	_iconsole_historypos = ICON_HISTORY_SIZE - 1;
+	_iconsole_mode = ICONSOLE_CLOSED;
+
+	memset(_iconsole_history, 0, sizeof(_iconsole_history));
+	memset(_iconsole_buffer, 0, sizeof(_iconsole_buffer));
+	memset(_iconsole_cbuffer, 0, sizeof(_iconsole_cbuffer));
+	_iconsole_cmdline.buf = CallocT<char>(ICON_CMDLN_SIZE); // create buffer and zero it
+	_iconsole_cmdline.maxlength = ICON_CMDLN_SIZE;
+
+	IConsolePrintF(CC_WARNING, "OpenTTD Game Console Revision 7 - %s", _openttd_revision);
+	IConsolePrint(CC_WHITE,  "------------------------------------");
+	IConsolePrint(CC_WHITE,  "use \"help\" for more information");
+	IConsolePrint(CC_WHITE,  "");
+	IConsoleClearCommand();
+	IConsoleHistoryAdd("");
+}
+
+void IConsoleClearBuffer()
+{
+	uint i;
+	for (i = 0; i <= ICON_BUFFER; i++) {
+		free(_iconsole_buffer[i]);
+		_iconsole_buffer[i] = NULL;
+	}
+}
+
+void IConsoleGUIFree()
+{
+	free(_iconsole_cmdline.buf);
+	IConsoleClearBuffer();
+}
+
+void IConsoleResize(Window *w)
+{
+	switch (_iconsole_mode) {
+		case ICONSOLE_OPENED:
+			w->height = _screen.height / 3;
+			w->width = _screen.width;
+			break;
+		case ICONSOLE_FULL:
+			w->height = _screen.height - ICON_BOTTOM_BORDERWIDTH;
+			w->width = _screen.width;
+			break;
+		default: return;
+	}
+
+	MarkWholeScreenDirty();
+}
+
+void IConsoleSwitch()
+{
+	switch (_iconsole_mode) {
+		case ICONSOLE_CLOSED:
+			new IConsoleWindow(&_iconsole_window_desc);
+			break;
+
+		case ICONSOLE_OPENED: case ICONSOLE_FULL:
+			DeleteWindowById(WC_CONSOLE, 0);
+			break;
+	}
+
+	MarkWholeScreenDirty();
+}
+
+void IConsoleClose() {if (_iconsole_mode == ICONSOLE_OPENED) IConsoleSwitch();}
+void IConsoleOpen()  {if (_iconsole_mode == ICONSOLE_CLOSED) IConsoleSwitch();}
+
+/**
+ * Add the entered line into the history so you can look it back
+ * scroll, etc. Put it to the beginning as it is the latest text
+ * @param cmd Text to be entered into the 'history'
+ */
+static void IConsoleHistoryAdd(const char *cmd)
+{
+	free(_iconsole_history[ICON_HISTORY_SIZE - 1]);
+
+	memmove(&_iconsole_history[1], &_iconsole_history[0], sizeof(_iconsole_history[0]) * (ICON_HISTORY_SIZE - 1));
+	_iconsole_history[0] = strdup(cmd);
+	IConsoleResetHistoryPos();
+}
+
+/**
+ * Navigate Up/Down in the history of typed commands
+ * @param direction Go further back in history (+1), go to recently typed commands (-1)
+ */
+static void IConsoleHistoryNavigate(int direction)
+{
+	int i = _iconsole_historypos + direction;
+
+	/* watch out for overflows, just wrap around */
+	if (i < 0) i = ICON_HISTORY_SIZE - 1;
+	if (i >= ICON_HISTORY_SIZE) i = 0;
+
+	if (direction > 0) {
+		if (_iconsole_history[i] == NULL) i = 0;
+	}
+
+	if (direction < 0) {
+		while (i > 0 && _iconsole_history[i] == NULL) i--;
+	}
+
+	_iconsole_historypos = i;
+	IConsoleClearCommand();
+	/* copy history to 'command prompt / bash' */
+	assert(_iconsole_history[i] != NULL && IsInsideMM(i, 0, ICON_HISTORY_SIZE));
+	ttd_strlcpy(_iconsole_cmdline.buf, _iconsole_history[i], _iconsole_cmdline.maxlength);
+	UpdateTextBufferSize(&_iconsole_cmdline);
+}
+
+/**
+ * Handle the printing of text entered into the console or redirected there
+ * by any other means. Text can be redirected to other players in a network game
+ * as well as to a logfile. If the network server is a dedicated server, all activities
+ * are also logged. All lines to print are added to a temporary buffer which can be
+ * used as a history to print them onscreen
+ * @param color_code the colour of the command. Red in case of errors, etc.
+ * @param string the message entered or output on the console (notice, error, etc.)
+ */
+void IConsoleGUIPrint(ConsoleColour color_code, char *str)
+{
+	/* move up all the strings in the buffer one place and do the same for colour
+	 * to accomodate for the new command/message */
+	free(_iconsole_buffer[0]);
+	memmove(&_iconsole_buffer[0], &_iconsole_buffer[1], sizeof(_iconsole_buffer[0]) * ICON_BUFFER);
+	_iconsole_buffer[ICON_BUFFER] = str;
+
+	memmove(&_iconsole_cbuffer[0], &_iconsole_cbuffer[1], sizeof(_iconsole_cbuffer[0]) * ICON_BUFFER);
+	_iconsole_cbuffer[ICON_BUFFER] = color_code;
+
+	SetWindowDirty(FindWindowById(WC_CONSOLE, 0));
+}
diff --git a/src/console_internal.h b/src/console_internal.h
index f4884e3da..3d6fffb93 100644
--- a/src/console_internal.h
+++ b/src/console_internal.h
@@ -135,4 +135,9 @@ void IConsoleVarProcAdd(const char *name, IConsoleCmdProc *proc);
 
 /* Supporting functions */
 bool GetArgumentInteger(uint32 *value, const char *arg);
-#endif /* CONSOLE_H */
+
+void IConsoleGUIInit();
+void IConsoleGUIFree();
+void IConsoleGUIPrint(ConsoleColour color_code, char *string);
+
+#endif /* CONSOLE_INTERNAL_H */