mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
946 lines
24 KiB
946 lines
24 KiB
/*++
|
|
|
|
Copyright (c) 1999 Intel Corporation
|
|
|
|
Module Name:
|
|
libFileBuffer.c
|
|
|
|
Abstract:
|
|
Defines FileBuffer - the view of the file that is visible at any point,
|
|
as well as the event handlers for editing the file
|
|
--*/
|
|
|
|
|
|
#ifndef _LIB_FILE_BUFFER
|
|
#define _LIB_FILE_BUFFER
|
|
|
|
#include "libMisc.h"
|
|
|
|
extern EFI_EDITOR_LINE* FileImageCreateNode (VOID);
|
|
|
|
|
|
#define ABSOLUTE_MAX_COLUMNS 132
|
|
STATIC CHAR16 BlankLine[ABSOLUTE_MAX_COLUMNS];
|
|
|
|
STATIC EFI_STATUS FileBufferScrollUp (VOID);
|
|
STATIC EFI_STATUS FileBufferScrollDown (VOID);
|
|
STATIC EFI_STATUS FileBufferScrollLeft (VOID);
|
|
STATIC EFI_STATUS FileBufferScrollRight (VOID);
|
|
STATIC EFI_STATUS FileBufferPageUp (VOID);
|
|
STATIC EFI_STATUS FileBufferPageDown (VOID);
|
|
STATIC EFI_STATUS FileBufferHome (VOID);
|
|
STATIC EFI_STATUS FileBufferEnd (VOID);
|
|
STATIC EFI_STATUS FileBufferChangeMode (VOID);
|
|
|
|
STATIC EFI_STATUS FileBufferDoDelete (VOID);
|
|
STATIC EFI_STATUS FileBufferDoBackspace (VOID);
|
|
STATIC EFI_STATUS FileBufferDoCharInput (CHAR16);
|
|
STATIC EFI_STATUS FileBufferDoReturn (VOID);
|
|
|
|
|
|
STATIC EFI_STATUS FileBufferRefreshCurrentLine(VOID);
|
|
STATIC EFI_STATUS FileBufferRefreshDown(VOID);
|
|
|
|
STATIC EFI_STATUS FileBufferInit (VOID);
|
|
STATIC EFI_STATUS FileBufferCleanup (VOID);
|
|
STATIC EFI_STATUS FileBufferRefresh (VOID);
|
|
STATIC EFI_STATUS FileBufferHide (VOID);
|
|
STATIC EFI_STATUS FileBufferHandleInput (EFI_INPUT_KEY*);
|
|
|
|
STATIC EFI_STATUS FileBufferClearLine (UINTN);
|
|
STATIC EFI_STATUS FileBufferSetPosition (UINTN,UINTN);
|
|
STATIC EFI_STATUS FileBufferRestorePosition (VOID);
|
|
|
|
EFI_EDITOR_FILE_BUFFER FileBuffer = {
|
|
{0,0},
|
|
{0,0},
|
|
{0,0},
|
|
{0,0},
|
|
0,
|
|
0,
|
|
TRUE,
|
|
NULL,
|
|
FileBufferInit,
|
|
FileBufferCleanup,
|
|
FileBufferRefresh,
|
|
FileBufferHide,
|
|
FileBufferHandleInput,
|
|
FileBufferClearLine,
|
|
FileBufferSetPosition,
|
|
FileBufferRestorePosition,
|
|
FileBufferRefreshCurrentLine
|
|
};
|
|
|
|
EFI_EDITOR_FILE_BUFFER FileBufferConst = {
|
|
{0,0},
|
|
{0,0},
|
|
{0,0},
|
|
{0,0},
|
|
0,
|
|
0,
|
|
TRUE,
|
|
NULL,
|
|
FileBufferInit,
|
|
FileBufferCleanup,
|
|
FileBufferRefresh,
|
|
FileBufferHide,
|
|
FileBufferHandleInput,
|
|
FileBufferClearLine,
|
|
FileBufferSetPosition,
|
|
FileBufferRestorePosition,
|
|
FileBufferRefreshCurrentLine
|
|
};
|
|
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
FileBufferInit (
|
|
VOID
|
|
)
|
|
{
|
|
UINTN i;
|
|
|
|
CopyMem (&FileBuffer, &FileBufferConst, sizeof(FileBuffer));
|
|
|
|
FileBuffer.DisplayPosition.Row = TEXT_START_ROW;
|
|
FileBuffer.DisplayPosition.Column = TEXT_START_COLUMN;
|
|
FileBuffer.LowVisibleRange.Row = TEXT_START_ROW;
|
|
FileBuffer.LowVisibleRange.Column = TEXT_START_COLUMN;
|
|
FileBuffer.MaxVisibleRows = MAX_TEXT_ROWS;
|
|
FileBuffer.MaxVisibleColumns = MAX_TEXT_COLUMNS;
|
|
FileBuffer.HighVisibleRange.Row = MAX_TEXT_ROWS;
|
|
FileBuffer.HighVisibleRange.Column = MAX_TEXT_COLUMNS;
|
|
|
|
for (i = 0; i < MAX_TEXT_COLUMNS; i++) {
|
|
BlankLine[i] = ' ';
|
|
}
|
|
BlankLine[i-1] = 0;
|
|
|
|
FileBuffer.LowVisibleRange.Row = TEXT_START_ROW;
|
|
FileBuffer.LowVisibleRange.Column = TEXT_START_COLUMN;
|
|
|
|
FileBuffer.MaxVisibleRows = MAX_TEXT_ROWS;
|
|
FileBuffer.MaxVisibleColumns = MAX_TEXT_COLUMNS;
|
|
|
|
FileBuffer.FilePosition.Row = 1;
|
|
FileBuffer.FilePosition.Column = 1;
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
FileBufferCleanup (
|
|
VOID
|
|
)
|
|
{
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
FileBufferRefresh (
|
|
VOID
|
|
)
|
|
{
|
|
LIST_ENTRY *Item;
|
|
UINTN Row;
|
|
|
|
Row = FileBuffer.DisplayPosition.Row;
|
|
FileBuffer.DisplayPosition.Row = TEXT_START_ROW;
|
|
|
|
Item = FileBuffer.CurrentLine;
|
|
|
|
LineRetreat(FileBuffer.FilePosition.Row - FileBuffer.LowVisibleRange.Row);
|
|
|
|
FileBufferRefreshDown();
|
|
|
|
FileBuffer.CurrentLine = Item;
|
|
|
|
FileBuffer.DisplayPosition.Row = Row;
|
|
FileBufferRestorePosition();
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
FileBufferRefreshCurrentLine (
|
|
VOID
|
|
)
|
|
{
|
|
EFI_EDITOR_LINE *Line;
|
|
UINTN Where;
|
|
CHAR16 *StrLine;
|
|
UINTN StartColumn;
|
|
|
|
Where = FileBuffer.DisplayPosition.Row;
|
|
StartColumn = FileBuffer.LowVisibleRange.Column;
|
|
|
|
FileBufferClearLine(Where);
|
|
|
|
Line = LineCurrent();
|
|
|
|
if (Line->Link.Blink == MainEditor.FileImage->ListHead &&
|
|
FileBuffer.DisplayPosition.Row > TEXT_START_ROW) {
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
if (Line->Size < StartColumn) {
|
|
FileBufferRestorePosition();
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
StrLine = PoolPrint(L"%s",Line->Buffer + StartColumn);
|
|
if ((Line->Size - StartColumn)> FileBuffer.MaxVisibleColumns) {
|
|
StrLine[FileBuffer.MaxVisibleColumns-2] = 0;
|
|
} else {
|
|
StrLine[(Line->Size - StartColumn)] = 0;
|
|
}
|
|
|
|
/* PrintAt(0,Where,StrLine); */
|
|
Out->SetCursorPosition(Out,0,Where);
|
|
Out->OutputString(Out,StrLine);
|
|
|
|
FreePool(StrLine);
|
|
|
|
FileBufferRestorePosition();
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
FileBufferRefreshDown (
|
|
VOID
|
|
)
|
|
{
|
|
LIST_ENTRY *Item;
|
|
LIST_ENTRY *Link;
|
|
UINTN Row;
|
|
|
|
Row = FileBuffer.DisplayPosition.Row;
|
|
|
|
Item = FileBuffer.CurrentLine;
|
|
Link = FileBuffer.CurrentLine;
|
|
|
|
while (FileBuffer.DisplayPosition.Row <= MAX_TEXT_ROWS) {
|
|
if (Link->Flink != MainEditor.FileImage->ListHead) {
|
|
FileBufferRefreshCurrentLine();
|
|
LineNext();
|
|
Link = FileBuffer.CurrentLine;
|
|
} else {
|
|
FileBufferClearLine(FileBuffer.DisplayPosition.Row);
|
|
}
|
|
FileBuffer.DisplayPosition.Row++;
|
|
}
|
|
|
|
FileBuffer.CurrentLine = Item;
|
|
|
|
FileBuffer.DisplayPosition.Row = Row;
|
|
FileBufferRestorePosition();
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
FileBufferHandleInput (
|
|
IN EFI_INPUT_KEY* Key
|
|
)
|
|
{
|
|
|
|
switch (Key->ScanCode) {
|
|
case SCAN_CODE_NULL:
|
|
FileBufferDoCharInput (Key->UnicodeChar);
|
|
break;
|
|
case SCAN_CODE_UP:
|
|
FileBufferScrollUp();
|
|
break;
|
|
case SCAN_CODE_DOWN:
|
|
FileBufferScrollDown();
|
|
break;
|
|
case SCAN_CODE_RIGHT:
|
|
FileBufferScrollRight();
|
|
break;
|
|
case SCAN_CODE_LEFT:
|
|
FileBufferScrollLeft();
|
|
break;
|
|
case SCAN_CODE_PGUP:
|
|
FileBufferPageUp();
|
|
break;
|
|
case SCAN_CODE_PGDN:
|
|
FileBufferPageDown();
|
|
break;
|
|
case SCAN_CODE_DEL:
|
|
FileBufferDoDelete();
|
|
break;
|
|
case SCAN_CODE_HOME:
|
|
FileBufferHome();
|
|
break;
|
|
case SCAN_CODE_END:
|
|
FileBufferEnd();
|
|
break;
|
|
case SCAN_CODE_INS:
|
|
FileBufferChangeMode();
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
FileBufferHide (
|
|
VOID
|
|
)
|
|
{
|
|
UINTN i;
|
|
|
|
for (i = TEXT_START_ROW; i < FileBuffer.MaxVisibleRows; i++ ) {
|
|
FileBufferClearLine(i);
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
FileBufferClearLine (
|
|
UINTN Line
|
|
)
|
|
{
|
|
PrintAt(0,Line,BlankLine);
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
FileBufferSetPosition (
|
|
IN UINTN Row,
|
|
IN UINTN Column
|
|
)
|
|
{
|
|
FileBuffer.DisplayPosition.Row = Row;
|
|
FileBuffer.DisplayPosition.Column = Column;
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
FileBufferRestorePosition (
|
|
VOID
|
|
)
|
|
{
|
|
Out->SetCursorPosition (Out,FileBuffer.DisplayPosition.Column,FileBuffer.DisplayPosition.Row);
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
FileBufferScrollDown (
|
|
VOID
|
|
)
|
|
{
|
|
UINTN CurrentRow;
|
|
UINTN CurrentCol;
|
|
UINTN MaxRows;
|
|
UINTN HighRow;
|
|
EFI_EDITOR_LINE *Line;
|
|
BOOLEAN Refresh = FALSE;
|
|
|
|
Line = LineCurrent();
|
|
if (Line->Link.Flink == MainEditor.FileImage->ListHead) {
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
CurrentRow = FileBuffer.DisplayPosition.Row;
|
|
CurrentCol = FileBuffer.DisplayPosition.Column;
|
|
MaxRows = FileBuffer.MaxVisibleRows;
|
|
HighRow = FileBuffer.HighVisibleRange.Row;
|
|
|
|
/* Current row is the bottom row, shift only one line, not scroll the whole screen. */
|
|
if (CurrentRow == MaxRows) {
|
|
FileBuffer.LowVisibleRange.Row += 1;
|
|
FileBuffer.HighVisibleRange.Row += 1;
|
|
CurrentRow = MaxRows;
|
|
Refresh = TRUE;
|
|
} else if (CurrentRow == HighRow) {
|
|
return EFI_SUCCESS;
|
|
} else {
|
|
++CurrentRow;
|
|
}
|
|
|
|
Line = LineNext();
|
|
|
|
if (FileBuffer.FilePosition.Column > (Line->Size-1)) {
|
|
FileBuffer.FilePosition.Column = Line->Size;
|
|
if (Line->Size < FileBuffer.LowVisibleRange.Column) {
|
|
if (FileBuffer.LowVisibleRange.Column < FileBuffer.MaxVisibleColumns) {
|
|
FileBuffer.LowVisibleRange.Column = TEXT_START_COLUMN;
|
|
} else {
|
|
FileBuffer.LowVisibleRange.Column = Line->Size - FileBuffer.MaxVisibleColumns + 2;
|
|
}
|
|
FileBuffer.HighVisibleRange.Column = FileBuffer.LowVisibleRange.Column + FileBuffer.MaxVisibleColumns - 1;
|
|
Refresh = TRUE;
|
|
}
|
|
CurrentCol = FileBuffer.FilePosition.Column - FileBuffer.LowVisibleRange.Column - 1;
|
|
}
|
|
|
|
if (Refresh) {
|
|
FileBufferRefresh();
|
|
}
|
|
FileBuffer.SetPosition(CurrentRow,CurrentCol);
|
|
|
|
++FileBuffer.FilePosition.Row;
|
|
|
|
MainEditor.StatusBar->SetPosition(FileBuffer.FilePosition.Row,FileBuffer.FilePosition.Column);
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
FileBufferScrollUp (
|
|
VOID
|
|
)
|
|
{
|
|
UINTN CurrentRow;
|
|
UINTN CurrentCol;
|
|
UINTN MaxRows;
|
|
UINTN LowRow;
|
|
EFI_EDITOR_LINE *Line;
|
|
|
|
if ( FileBuffer.FilePosition.Row <= TEXT_START_ROW ) {
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
MaxRows = FileBuffer.MaxVisibleRows;
|
|
LowRow = FileBuffer.LowVisibleRange.Row;
|
|
|
|
CurrentRow = FileBuffer.DisplayPosition.Row;
|
|
CurrentCol = FileBuffer.DisplayPosition.Column;
|
|
|
|
/* Current row is the top row, shift only one line, not scroll the whole screen. */
|
|
if (CurrentRow == TEXT_START_ROW) {
|
|
|
|
FileBuffer.HighVisibleRange.Row -= 1;
|
|
FileBuffer.LowVisibleRange.Row -= 1;
|
|
CurrentRow = TEXT_START_ROW;
|
|
FileBuffer.Refresh();
|
|
} else {
|
|
CurrentRow--;
|
|
}
|
|
|
|
Line = LinePrevious ();
|
|
|
|
if (FileBuffer.FilePosition.Column > (Line->Size-1)) {
|
|
|
|
FileBuffer.FilePosition.Column = Line->Size;
|
|
|
|
if (Line->Size < FileBuffer.LowVisibleRange.Column) {
|
|
if ( FileBuffer.LowVisibleRange.Column < FileBuffer.MaxVisibleColumns ) {
|
|
FileBuffer.LowVisibleRange.Column = TEXT_START_COLUMN;
|
|
} else {
|
|
FileBuffer.LowVisibleRange.Column = Line->Size - FileBuffer.MaxVisibleColumns + 2;
|
|
}
|
|
FileBuffer.HighVisibleRange.Column = FileBuffer.LowVisibleRange.Column + FileBuffer.MaxVisibleColumns - 1;
|
|
FileBuffer.Refresh();
|
|
}
|
|
CurrentCol = FileBuffer.FilePosition.Column - FileBuffer.LowVisibleRange.Column - 1;
|
|
}
|
|
|
|
FileBuffer.SetPosition(CurrentRow,CurrentCol);
|
|
|
|
--FileBuffer.FilePosition.Row;
|
|
MainEditor.StatusBar->SetPosition(FileBuffer.FilePosition.Row,FileBuffer.FilePosition.Column);
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
FileBufferPageUp (
|
|
VOID
|
|
)
|
|
{
|
|
UINTN MaxRows;
|
|
UINTN LowRow;
|
|
UINTN FilePos;
|
|
EFI_EDITOR_LINE *Line;
|
|
|
|
if ( FileBuffer.FilePosition.Row <= TEXT_START_ROW ) {
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
MaxRows = FileBuffer.MaxVisibleRows;
|
|
LowRow = FileBuffer.LowVisibleRange.Row;
|
|
FilePos = FileBuffer.FilePosition.Row;
|
|
|
|
if (LowRow < MaxRows) {
|
|
FileBuffer.HighVisibleRange.Row = MaxRows;
|
|
FileBuffer.LowVisibleRange.Row = 1;
|
|
if (LowRow > TEXT_START_ROW) {
|
|
if (FilePos > MaxRows){
|
|
FileBuffer.DisplayPosition.Row = FilePos - MaxRows;
|
|
} else {
|
|
FileBuffer.DisplayPosition.Row = 1;
|
|
}
|
|
} else {
|
|
FileBuffer.DisplayPosition.Row = 1;
|
|
FileBuffer.DisplayPosition.Column = TEXT_START_COLUMN;
|
|
}
|
|
FileBuffer.FilePosition.Row = FileBuffer.DisplayPosition.Row;
|
|
} else {
|
|
FileBuffer.HighVisibleRange.Row = LowRow;
|
|
FileBuffer.LowVisibleRange.Row -= (MaxRows - 1);
|
|
FileBuffer.FilePosition.Row -= (MaxRows - 1);
|
|
}
|
|
|
|
LineRetreat(FilePos - FileBuffer.FilePosition.Row);
|
|
Line = LineCurrent ();
|
|
|
|
if (FileBuffer.FilePosition.Column > (Line->Size-1)) {
|
|
|
|
FileBuffer.FilePosition.Column = Line->Size;
|
|
|
|
if (Line->Size < FileBuffer.LowVisibleRange.Column ) {
|
|
if ( FileBuffer.LowVisibleRange.Column < FileBuffer.MaxVisibleColumns ) {
|
|
FileBuffer.LowVisibleRange.Column = TEXT_START_COLUMN;
|
|
} else {
|
|
FileBuffer.LowVisibleRange.Column = Line->Size - FileBuffer.MaxVisibleColumns + 2;
|
|
}
|
|
FileBuffer.HighVisibleRange.Column = FileBuffer.LowVisibleRange.Column + FileBuffer.MaxVisibleColumns - 1;
|
|
}
|
|
FileBuffer.DisplayPosition.Column = FileBuffer.FilePosition.Column - FileBuffer.LowVisibleRange.Column - 1;
|
|
FileBuffer.Refresh();
|
|
}
|
|
|
|
FileBuffer.Refresh();
|
|
|
|
MainEditor.StatusBar->SetPosition(FileBuffer.FilePosition.Row,FileBuffer.FilePosition.Column);
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
FileBufferPageDown (
|
|
VOID
|
|
)
|
|
{
|
|
UINTN MaxRows;
|
|
UINTN HighRow;
|
|
UINTN FilePos;
|
|
EFI_EDITOR_LINE *Line;
|
|
BOOLEAN Refresh = FALSE;
|
|
|
|
if (FileBuffer.FilePosition.Row == MainEditor.FileImage->NumLines) {
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
MaxRows = FileBuffer.MaxVisibleRows;
|
|
HighRow = FileBuffer.HighVisibleRange.Row;
|
|
FilePos = FileBuffer.FilePosition.Row;
|
|
|
|
FileBuffer.FilePosition.Row = min((FileBuffer.FilePosition.Row+MaxRows-1),MainEditor.FileImage->NumLines);
|
|
if (HighRow < MainEditor.FileImage->NumLines) {
|
|
FileBuffer.LowVisibleRange.Row = HighRow;
|
|
FileBuffer.HighVisibleRange.Row = HighRow + (MaxRows-1);
|
|
Refresh = TRUE;
|
|
}
|
|
|
|
FileBuffer.DisplayPosition.Row = TEXT_START_ROW + FileBuffer.FilePosition.Row - FileBuffer.LowVisibleRange.Row;
|
|
|
|
Line = LineAdvance(FileBuffer.FilePosition.Row - FilePos);
|
|
|
|
if (FileBuffer.FilePosition.Column > (Line->Size-1) || !Refresh) {
|
|
FileBuffer.FilePosition.Column = Line->Size;
|
|
if (Line->Size < FileBuffer.LowVisibleRange.Column ) {
|
|
if (FileBuffer.LowVisibleRange.Column < FileBuffer.MaxVisibleColumns) {
|
|
FileBuffer.LowVisibleRange.Column = TEXT_START_COLUMN;
|
|
} else {
|
|
FileBuffer.LowVisibleRange.Column = Line->Size - FileBuffer.MaxVisibleColumns + 2;
|
|
}
|
|
FileBuffer.HighVisibleRange.Column = FileBuffer.LowVisibleRange.Column + FileBuffer.MaxVisibleColumns - 1;
|
|
Refresh = TRUE;
|
|
}
|
|
FileBuffer.DisplayPosition.Column = FileBuffer.FilePosition.Column - FileBuffer.LowVisibleRange.Column - 1;
|
|
}
|
|
|
|
if (Refresh) {
|
|
FileBuffer.Refresh();
|
|
}
|
|
|
|
MainEditor.StatusBar->SetPosition(FileBuffer.FilePosition.Row,FileBuffer.FilePosition.Column);
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
FileBufferScrollLeft (
|
|
VOID
|
|
)
|
|
{
|
|
UINTN CurrentCol;
|
|
UINTN CurrentRow;
|
|
UINTN MaxCols;
|
|
UINTN HighCol;
|
|
UINTN LowCol;
|
|
EFI_EDITOR_POSITION FilePos;
|
|
EFI_EDITOR_LINE *Line;
|
|
|
|
CurrentCol = FileBuffer.DisplayPosition.Column;
|
|
CurrentRow = FileBuffer.DisplayPosition.Row;
|
|
MaxCols = FileBuffer.MaxVisibleColumns;
|
|
HighCol = FileBuffer.HighVisibleRange.Column;
|
|
LowCol = FileBuffer.LowVisibleRange.Column;
|
|
FilePos = FileBuffer.FilePosition;
|
|
Line = LineCurrent ();
|
|
|
|
if ( FilePos.Row == 1 && FilePos.Column == 1) {
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
if ( Line->Size == 0 || FilePos.Column == TEXT_START_COLUMN + 1 ) {
|
|
FileBufferScrollUp ();
|
|
Line = LineCurrent ();
|
|
CurrentCol = Line->Size - 1;
|
|
|
|
if ( CurrentCol > HighCol ) {
|
|
if ( CurrentCol < MaxCols ) {
|
|
FileBuffer.LowVisibleRange.Column = TEXT_START_COLUMN;
|
|
FileBuffer.HighVisibleRange.Column = MaxCols;
|
|
} else {
|
|
FileBuffer.HighVisibleRange.Column = CurrentCol;
|
|
FileBuffer.LowVisibleRange.Column = CurrentCol - MaxCols + 1;
|
|
}
|
|
FileBuffer.Refresh();
|
|
}
|
|
FileBuffer.FilePosition.Column = CurrentCol + 1;
|
|
FileBuffer.DisplayPosition.Column = CurrentCol - FileBuffer.LowVisibleRange.Column;
|
|
} else if ( FilePos.Column <= LowCol+1 ) {
|
|
if ( LowCol <= MaxCols ) {
|
|
LowCol = TEXT_START_COLUMN;
|
|
} else {
|
|
LowCol -= (MaxCols-1);
|
|
}
|
|
FileBuffer.LowVisibleRange.Column = LowCol;
|
|
FileBuffer.HighVisibleRange.Column = LowCol + MaxCols - 1;
|
|
FileBuffer.DisplayPosition.Column = FilePos.Column - LowCol - 2;
|
|
--FileBuffer.FilePosition.Column;
|
|
|
|
FileBuffer.Refresh();
|
|
} else {
|
|
--FileBuffer.DisplayPosition.Column;
|
|
--FileBuffer.FilePosition.Column;
|
|
}
|
|
MainEditor.StatusBar->SetPosition(FileBuffer.FilePosition.Row,FileBuffer.FilePosition.Column);
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
FileBufferScrollRight (
|
|
VOID
|
|
)
|
|
{
|
|
EFI_EDITOR_POSITION FilePos;
|
|
EFI_EDITOR_POSITION CurrentPos;
|
|
EFI_EDITOR_LINE *Line;
|
|
UINTN LineSize;
|
|
UINTN MaxCols;
|
|
UINTN LowCol;
|
|
UINTN HighCol;
|
|
|
|
CurrentPos = FileBuffer.DisplayPosition;
|
|
FilePos = FileBuffer.FilePosition;
|
|
Line = LineCurrent ();
|
|
LineSize = Line->Size;
|
|
MaxCols = FileBuffer.MaxVisibleColumns;
|
|
LowCol = FileBuffer.LowVisibleRange.Column;
|
|
HighCol = FileBuffer.HighVisibleRange.Column;
|
|
|
|
if (FilePos.Column >= (Line->Size-1) && FilePos.Row >= MainEditor.FileImage->NumLines) {
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
if (LineSize == 0 || FilePos.Column >= LineSize) {
|
|
FileBufferScrollDown();
|
|
|
|
CurrentPos.Column = TEXT_START_COLUMN;
|
|
|
|
if (LowCol > TEXT_START_COLUMN) {
|
|
FileBuffer.LowVisibleRange.Column = TEXT_START_COLUMN;
|
|
|
|
FileBuffer.HighVisibleRange.Column = MaxCols;
|
|
FileBuffer.Refresh ();
|
|
}
|
|
FileBuffer.FilePosition.Column = 1;
|
|
FileBuffer.DisplayPosition.Column = TEXT_START_COLUMN;
|
|
} else if (CurrentPos.Column >= (MaxCols - 1)) {
|
|
FileBuffer.LowVisibleRange.Column = HighCol - 2;
|
|
FileBuffer.HighVisibleRange.Column = HighCol + MaxCols - 2;
|
|
|
|
++FileBuffer.FilePosition.Column;
|
|
|
|
FileBuffer.DisplayPosition.Column = TEXT_START_COLUMN + 2;
|
|
|
|
FileBuffer.Refresh();
|
|
} else {
|
|
++FileBuffer.FilePosition.Column;
|
|
++FileBuffer.DisplayPosition.Column;
|
|
}
|
|
|
|
MainEditor.StatusBar->SetPosition(FileBuffer.FilePosition.Row,FileBuffer.FilePosition.Column);
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
FileBufferHome (
|
|
VOID
|
|
)
|
|
{
|
|
FileBuffer.DisplayPosition.Column = TEXT_START_COLUMN;
|
|
FileBuffer.FilePosition.Column = TEXT_START_COLUMN + 1;
|
|
|
|
if (FileBuffer.LowVisibleRange.Column != TEXT_START_COLUMN) {
|
|
FileBuffer.LowVisibleRange.Column = TEXT_START_COLUMN;
|
|
FileBuffer.HighVisibleRange.Column = FileBuffer.MaxVisibleColumns;
|
|
FileBuffer.Refresh ();
|
|
}
|
|
|
|
MainEditor.StatusBar->SetPosition (FileBuffer.FilePosition.Row,TEXT_START_COLUMN+1);
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
FileBufferEnd (
|
|
VOID
|
|
)
|
|
{
|
|
EFI_EDITOR_LINE *Line;
|
|
|
|
Line = LineCurrent ();
|
|
|
|
FileBuffer.FilePosition.Column = Line->Size;
|
|
|
|
if (FileBuffer.HighVisibleRange.Column < (Line->Size - 1)) {
|
|
FileBuffer.HighVisibleRange.Column = Line->Size - 1;
|
|
FileBuffer.LowVisibleRange.Column = Line->Size - FileBuffer.MaxVisibleColumns;
|
|
FileBuffer.Refresh();
|
|
}
|
|
FileBuffer.DisplayPosition.Column = Line->Size - FileBuffer.LowVisibleRange.Column - 1;
|
|
|
|
MainEditor.StatusBar->SetPosition (FileBuffer.FilePosition.Row,Line->Size);
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
FileBufferDoCharInput (
|
|
IN CHAR16 Char
|
|
)
|
|
{
|
|
switch (Char) {
|
|
case 0:
|
|
break;
|
|
case 0x08:
|
|
FileBufferDoBackspace();
|
|
break;
|
|
case 0x0a:
|
|
case 0x0d:
|
|
FileBufferDoReturn();
|
|
break;
|
|
default:
|
|
{
|
|
EFI_EDITOR_LINE *Line;
|
|
UINTN FilePos;
|
|
Line = LineCurrent ();
|
|
if (Line->Link.Flink != MainEditor.FileImage->ListHead) {
|
|
FilePos = FileBuffer.FilePosition.Column - 1;
|
|
if (FileBuffer.ModeInsert || FilePos >= Line->Size-1) {
|
|
StrInsert (&Line->Buffer,Char,FilePos,Line->Size+1);
|
|
Line->Size++;
|
|
} else {
|
|
Line->Buffer[FilePos] = Char;
|
|
}
|
|
} else {
|
|
Line->Buffer[0] = Char;
|
|
Line->Size++;
|
|
FileImageCreateNode();
|
|
}
|
|
FileBufferRefreshCurrentLine();
|
|
FileBufferScrollRight();
|
|
}
|
|
if (!MainEditor.FileModified) {
|
|
MainEditor.FileModified = TRUE;
|
|
MainEditor.TitleBar->Refresh();
|
|
}
|
|
break;
|
|
}
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
FileBufferDoBackspace (
|
|
VOID
|
|
)
|
|
{
|
|
EFI_EDITOR_LINE *Line;
|
|
EFI_EDITOR_LINE *End;
|
|
LIST_ENTRY *Link;
|
|
UINTN FileColumn;
|
|
|
|
FileColumn = FileBuffer.FilePosition.Column - 1;
|
|
|
|
if (FileColumn == TEXT_START_COLUMN) {
|
|
if (FileBuffer.FilePosition.Row == 1) {
|
|
return EFI_SUCCESS;
|
|
}
|
|
FileBufferScrollLeft();
|
|
Line = LineCurrent ();
|
|
|
|
Link = Line->Link.Flink;
|
|
End = CR(Link,EFI_EDITOR_LINE,Link,EFI_EDITOR_LINE_LIST);
|
|
LineCat(Line,End);
|
|
|
|
RemoveEntryList(&End->Link);
|
|
FreePool(End);
|
|
|
|
--MainEditor.FileImage->NumLines;
|
|
FileBufferRefresh();
|
|
|
|
} else {
|
|
Line = LineCurrent ();
|
|
LineDeleteAt(Line,FileColumn-1);
|
|
FileBufferRefreshCurrentLine();
|
|
FileBufferScrollLeft();
|
|
}
|
|
if (!MainEditor.FileModified) {
|
|
MainEditor.FileModified = TRUE;
|
|
MainEditor.TitleBar->Refresh();
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
FileBufferDoDelete (
|
|
VOID
|
|
)
|
|
{
|
|
EFI_EDITOR_LINE *Line;
|
|
EFI_EDITOR_LINE *Next;
|
|
LIST_ENTRY *Link;
|
|
UINTN FileColumn;
|
|
|
|
Line = LineCurrent ();
|
|
FileColumn = FileBuffer.FilePosition.Column - 1;
|
|
|
|
if (Line->Link.Flink == MainEditor.FileImage->ListHead) {
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
if (FileColumn >= Line->Size - 1) {
|
|
Link = Line->Link.Flink;
|
|
if (Link->Flink == MainEditor.FileImage->ListHead) {
|
|
return EFI_SUCCESS;
|
|
}
|
|
Next = CR(Link,EFI_EDITOR_LINE,Link,EFI_EDITOR_LINE_LIST);
|
|
LineCat(Line,Next);
|
|
|
|
RemoveEntryList(&Next->Link);
|
|
FreePool(Next);
|
|
--MainEditor.FileImage->NumLines;
|
|
FileBufferRefresh();
|
|
} else {
|
|
LineDeleteAt (Line,FileColumn);
|
|
FileBufferRefreshCurrentLine();
|
|
}
|
|
|
|
if (!MainEditor.FileModified) {
|
|
MainEditor.FileModified = TRUE;
|
|
MainEditor.TitleBar->Refresh();
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
FileBufferDoReturn (
|
|
VOID
|
|
)
|
|
{
|
|
EFI_EDITOR_LINE *Line;
|
|
EFI_EDITOR_LINE *NewLine;
|
|
UINTN FileColumn;
|
|
|
|
Line = LineCurrent ();
|
|
FileColumn = FileBuffer.FilePosition.Column - 1;
|
|
|
|
NewLine = AllocatePool(sizeof(EFI_EDITOR_LINE));
|
|
NewLine->Signature = EFI_EDITOR_LINE_LIST;
|
|
NewLine->Size = Line->Size - FileColumn;
|
|
if (NewLine->Size > 1) {
|
|
NewLine->Buffer = PoolPrint(L"%s\0",Line->Buffer+FileColumn);
|
|
} else {
|
|
NewLine->Buffer = PoolPrint(L" \0");
|
|
}
|
|
|
|
Line->Buffer[FileColumn] = ' ';
|
|
Line->Buffer[FileColumn+1] = 0;
|
|
Line->Size = FileColumn + 1;
|
|
|
|
NewLine->Link.Blink = &(Line->Link);
|
|
NewLine->Link.Flink = Line->Link.Flink;
|
|
Line->Link.Flink->Blink = &(NewLine->Link);
|
|
Line->Link.Flink = &(NewLine->Link);
|
|
|
|
++MainEditor.FileImage->NumLines;
|
|
|
|
BS->Stall(50);
|
|
FileBufferRefreshDown();
|
|
FileBufferScrollRight();
|
|
if (!MainEditor.FileModified) {
|
|
MainEditor.FileModified = TRUE;
|
|
MainEditor.TitleBar->Refresh();
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
FileBufferChangeMode (
|
|
VOID
|
|
)
|
|
{
|
|
|
|
FileBuffer.ModeInsert = !FileBuffer.ModeInsert;
|
|
MainEditor.StatusBar->SetMode(FileBuffer.ModeInsert);
|
|
MainEditor.StatusBar->Refresh();
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
|
|
#endif /* _LIB_FILE_BUFFER */
|