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Diffstat (limited to 'ShellPkg/Library/UefiShellDebug1CommandsLib/HexEdit/BufferImage.c')
-rw-r--r--ShellPkg/Library/UefiShellDebug1CommandsLib/HexEdit/BufferImage.c4944
1 files changed, 2472 insertions, 2472 deletions
diff --git a/ShellPkg/Library/UefiShellDebug1CommandsLib/HexEdit/BufferImage.c b/ShellPkg/Library/UefiShellDebug1CommandsLib/HexEdit/BufferImage.c
index be77e31a40..3af53c516a 100644
--- a/ShellPkg/Library/UefiShellDebug1CommandsLib/HexEdit/BufferImage.c
+++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/HexEdit/BufferImage.c
@@ -1,2472 +1,2472 @@
-/** @file
- Defines HBufferImage - the view of the file that is visible at any point,
- as well as the event handlers for editing the file
-
- Copyright (c) 2005 - 2018, Intel Corporation. All rights reserved. <BR>
- SPDX-License-Identifier: BSD-2-Clause-Patent
-
-**/
-
-#include "HexEditor.h"
-
-extern EFI_HANDLE HImageHandleBackup;
-
-extern HEFI_EDITOR_FILE_IMAGE HFileImage;
-extern HEFI_EDITOR_DISK_IMAGE HDiskImage;
-extern HEFI_EDITOR_MEM_IMAGE HMemImage;
-
-extern HEFI_EDITOR_FILE_IMAGE HFileImageBackupVar;
-extern HEFI_EDITOR_DISK_IMAGE HDiskImageBackupVar;
-extern HEFI_EDITOR_MEM_IMAGE HMemImageBackupVar;
-
-extern BOOLEAN HEditorMouseAction;
-
-extern HEFI_EDITOR_GLOBAL_EDITOR HMainEditor;
-extern HEFI_EDITOR_GLOBAL_EDITOR HMainEditorBackupVar;
-
-HEFI_EDITOR_BUFFER_IMAGE HBufferImage;
-HEFI_EDITOR_BUFFER_IMAGE HBufferImageBackupVar;
-
-//
-// for basic initialization of HBufferImage
-//
-HEFI_EDITOR_BUFFER_IMAGE HBufferImageConst = {
- NULL,
- NULL,
- 0,
- NULL,
- {
- 0,
- 0
- },
- {
- 0,
- 0
- },
- {
- 0,
- 0
- },
- 0,
- TRUE,
- FALSE,
- FileTypeNone,
- NULL,
- NULL,
- NULL
-};
-
-//
-// the whole edit area needs to be refreshed
-//
-BOOLEAN HBufferImageNeedRefresh;
-
-//
-// only the current line in edit area needs to be refresh
-//
-BOOLEAN HBufferImageOnlyLineNeedRefresh;
-
-BOOLEAN HBufferImageMouseNeedRefresh;
-
-/**
- Initialization function for HBufferImage
-
- @retval EFI_SUCCESS The operation was successful.
- @retval EFI_LOAD_ERROR A load error occurred.
-**/
-EFI_STATUS
-HBufferImageInit (
- VOID
- )
-{
- EFI_STATUS Status;
-
- //
- // basically initialize the HBufferImage
- //
- CopyMem (&HBufferImage, &HBufferImageConst, sizeof (HBufferImage));
-
- //
- // INIT listhead
- //
- HBufferImage.ListHead = AllocateZeroPool (sizeof (LIST_ENTRY));
- if (HBufferImage.ListHead == NULL) {
- return EFI_LOAD_ERROR;
- }
-
- InitializeListHead (HBufferImage.ListHead);
-
- HBufferImage.DisplayPosition.Row = 2;
- HBufferImage.DisplayPosition.Column = 10;
- HBufferImage.MousePosition.Row = 2;
- HBufferImage.MousePosition.Column = 10;
-
- HBufferImage.FileImage = &HFileImage;
- HBufferImage.DiskImage = &HDiskImage;
- HBufferImage.MemImage = &HMemImage;
-
- HBufferImageNeedRefresh = FALSE;
- HBufferImageOnlyLineNeedRefresh = FALSE;
- HBufferImageMouseNeedRefresh = FALSE;
-
- HBufferImageBackupVar.FileImage = &HFileImageBackupVar;
- HBufferImageBackupVar.DiskImage = &HDiskImageBackupVar;
- HBufferImageBackupVar.MemImage = &HMemImageBackupVar;
-
- Status = HFileImageInit ();
- if (EFI_ERROR (Status)) {
- return EFI_LOAD_ERROR;
- }
-
- Status = HDiskImageInit ();
- if (EFI_ERROR (Status)) {
- return EFI_LOAD_ERROR;
- }
-
- Status = HMemImageInit ();
- if (EFI_ERROR (Status)) {
- return EFI_LOAD_ERROR;
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Backup function for HBufferImage. Only a few fields need to be backup.
- This is for making the file buffer refresh as few as possible.
-
- @retval EFI_SUCCESS The operation was successful.
-**/
-EFI_STATUS
-HBufferImageBackup (
- VOID
- )
-{
- HBufferImageBackupVar.MousePosition = HBufferImage.MousePosition;
-
- HBufferImageBackupVar.BufferPosition = HBufferImage.BufferPosition;
-
- HBufferImageBackupVar.Modified = HBufferImage.Modified;
-
- HBufferImageBackupVar.BufferType = HBufferImage.BufferType;
- HBufferImageBackupVar.LowVisibleRow = HBufferImage.LowVisibleRow;
- HBufferImageBackupVar.HighBits = HBufferImage.HighBits;
-
- //
- // three kinds of buffer supported
- // file buffer
- // disk buffer
- // memory buffer
- //
- switch (HBufferImage.BufferType) {
- case FileTypeFileBuffer:
- HFileImageBackup ();
- break;
-
- case FileTypeDiskBuffer:
- HDiskImageBackup ();
- break;
-
- case FileTypeMemBuffer:
- HMemImageBackup ();
- break;
-
- default:
- break;
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Free all the lines in HBufferImage.
- Fields affected:
- Lines
- CurrentLine
- NumLines
- ListHead
-
- @retval EFI_SUCCESS The operation was successful.
-**/
-EFI_STATUS
-HBufferImageFreeLines (
- VOID
- )
-{
- HFreeLines (HBufferImage.ListHead, HBufferImage.Lines);
-
- HBufferImage.Lines = NULL;
- HBufferImage.CurrentLine = NULL;
- HBufferImage.NumLines = 0;
-
- return EFI_SUCCESS;
-}
-
-/**
- Cleanup function for HBufferImage
-
- @retval EFI_SUCCESS The operation was successful.
-**/
-EFI_STATUS
-HBufferImageCleanup (
- VOID
- )
-{
- EFI_STATUS Status;
-
- //
- // free all the lines
- //
- Status = HBufferImageFreeLines ();
-
- SHELL_FREE_NON_NULL (HBufferImage.ListHead);
- HBufferImage.ListHead = NULL;
-
- HFileImageCleanup ();
- HDiskImageCleanup ();
-
- return Status;
-}
-
-/**
- Print Line on Row
-
- @param[in] Line The lline to print.
- @param[in] Row The row on screen ( begin from 1 ).
- @param[in] FRow The FRow.
- @param[in] Orig The original color.
- @param[in] New The color to print with.
-
- @retval EFI_SUCCESS The operation was successful.
-**/
-EFI_STATUS
-HBufferImagePrintLine (
- IN HEFI_EDITOR_LINE *Line,
- IN UINTN Row,
- IN UINTN FRow,
- IN HEFI_EDITOR_COLOR_UNION Orig,
- IN HEFI_EDITOR_COLOR_UNION New
-
- )
-{
- UINTN Index;
- UINTN Pos;
- BOOLEAN Selected;
- BOOLEAN BeNewColor;
- UINTN RowStart;
- UINTN RowEnd;
- UINTN ColStart;
- UINTN ColEnd;
-
- //
- // variable initialization
- //
- ColStart = 0;
- ColEnd = 0;
- Selected = FALSE;
-
- //
- // print the selected area in opposite color
- //
- if ((HMainEditor.SelectStart != 0) && (HMainEditor.SelectEnd != 0)) {
- RowStart = (HMainEditor.SelectStart - 1) / 0x10 + 1;
- RowEnd = (HMainEditor.SelectEnd - 1) / 0x10 + 1;
-
- ColStart = (HMainEditor.SelectStart - 1) % 0x10 + 1;
- ColEnd = (HMainEditor.SelectEnd - 1) % 0x10 + 1;
-
- if ((FRow >= RowStart) && (FRow <= RowEnd)) {
- Selected = TRUE;
- }
-
- if (FRow > RowStart) {
- ColStart = 1;
- }
-
- if (FRow < RowEnd) {
- ColEnd = 0x10;
- }
- }
-
- if (!HEditorMouseAction) {
- ShellPrintEx (
- 0,
- (INT32)Row - 1,
- L"%8X ",
- ((INT32)Row - 2 + HBufferImage.LowVisibleRow - 1) * 0x10
- );
- }
-
- for (Index = 0; Index < 0x08 && Index < Line->Size; Index++) {
- BeNewColor = FALSE;
-
- if (Selected) {
- if ((Index + 1 >= ColStart) && (Index + 1 <= ColEnd)) {
- BeNewColor = TRUE;
- }
- }
-
- if (BeNewColor) {
- gST->ConOut->SetAttribute (gST->ConOut, New.Data & 0x7F);
- } else {
- gST->ConOut->SetAttribute (gST->ConOut, Orig.Data & 0x7F);
- }
-
- Pos = 10 + (Index * 3);
- if (Line->Buffer[Index] < 0x10) {
- ShellPrintEx ((INT32)Pos - 1, (INT32)Row - 1, L"0");
- Pos++;
- }
-
- if (Index < 0x07) {
- ShellPrintEx ((INT32)Pos - 1, (INT32)Row - 1, L"%x ", Line->Buffer[Index]);
- } else {
- ShellPrintEx ((INT32)Pos - 1, (INT32)Row - 1, L"%x ", Line->Buffer[Index]);
- }
- }
-
- gST->ConOut->SetAttribute (gST->ConOut, Orig.Data & 0x7F);
- while (Index < 0x08) {
- Pos = 10 + (Index * 3);
- ShellPrintEx ((INT32)Pos - 1, (INT32)Row - 1, L" ");
- Index++;
- }
-
- while (Index < 0x10 && Index < Line->Size) {
- BeNewColor = FALSE;
-
- if (Selected) {
- if ((Index + 1 >= ColStart) && (Index + 1 <= ColEnd)) {
- BeNewColor = TRUE;
- }
- }
-
- if (BeNewColor) {
- gST->ConOut->SetAttribute (gST->ConOut, New.Data & 0x7F);
- } else {
- gST->ConOut->SetAttribute (gST->ConOut, Orig.Data & 0x7F);
- }
-
- Pos = 10 + (Index * 3) + 1;
- if (Line->Buffer[Index] < 0x10) {
- ShellPrintEx ((INT32)Pos - 1, (INT32)Row - 1, L"0");
- Pos++;
- }
-
- ShellPrintEx ((INT32)Pos - 1, (INT32)Row - 1, L"%x ", Line->Buffer[Index]);
- Index++;
- }
-
- gST->ConOut->SetAttribute (gST->ConOut, Orig.Data & 0x7F);
- while (Index < 0x10) {
- Pos = 10 + (Index * 3) + 1;
- ShellPrintEx ((INT32)Pos - 1, (INT32)Row - 1, L" ");
- Index++;
- }
-
- //
- // restore the original color
- //
- gST->ConOut->SetAttribute (gST->ConOut, Orig.Data & 0x7F);
-
- //
- // PRINT the buffer content
- //
- if (!HEditorMouseAction) {
- for (Index = 0; Index < 0x10 && Index < Line->Size; Index++) {
- Pos = ASCII_POSITION + Index;
-
- //
- // learned from shelle.h -- IsValidChar
- //
- if (Line->Buffer[Index] >= L' ') {
- ShellPrintEx ((INT32)Pos - 1, (INT32)Row - 1, L"%c", (CHAR16)Line->Buffer[Index]);
- } else {
- ShellPrintEx ((INT32)Pos - 1, (INT32)Row - 1, L"%c", '.');
- }
- }
-
- while (Index < 0x10) {
- Pos = ASCII_POSITION + Index;
- ShellPrintEx ((INT32)Pos - 1, (INT32)Row - 1, L" ");
- Index++;
- }
- }
-
- //
- // restore the abundant blank in hex edit area to original color
- //
- if (Selected) {
- if (ColEnd <= 7) {
- Pos = 10 + (ColEnd - 1) * 3 + 2;
- ShellPrintEx ((INT32)Pos - 1, (INT32)Row - 1, L" ");
- } else if (ColEnd == 8) {
- Pos = 10 + (ColEnd - 1) * 3 + 2;
- ShellPrintEx ((INT32)Pos - 1, (INT32)Row - 1, L" ");
- } else {
- Pos = 10 + (ColEnd - 1) * 3 + 3;
- ShellPrintEx ((INT32)Pos - 1, (INT32)Row - 1, L" ");
- }
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Function to decide if a column number is stored in the high bits.
-
- @param[in] Column The column to examine.
- @param[out] FCol The actual column number.
-
- @retval TRUE The actual column was in high bits and is now in FCol.
- @retval FALSE There was not a column number in the high bits.
-**/
-BOOLEAN
-HBufferImageIsAtHighBits (
- IN UINTN Column,
- OUT UINTN *FCol
- )
-{
- Column -= 10;
-
- //
- // NOW AFTER THE SUB, Column start from 0
- // 23 AND 24 ARE BOTH BLANK
- //
- if (Column == 24) {
- *FCol = 0;
- return FALSE;
- }
-
- if (Column > 24) {
- Column--;
- }
-
- *FCol = (Column / 3) + 1;
-
- if (Column % 3 == 0) {
- return TRUE;
- }
-
- if ((Column % 3 == 2)) {
- *FCol = 0;
- }
-
- return FALSE;
-}
-
-/**
- Decide if a point is in the already selected area.
-
- @param[in] MouseRow The row of the point to test.
- @param[in] MouseCol The col of the point to test.
-
- @retval TRUE The point is in the selected area.
- @retval FALSE The point is not in the selected area.
-**/
-BOOLEAN
-HBufferImageIsInSelectedArea (
- IN UINTN MouseRow,
- IN UINTN MouseCol
- )
-{
- UINTN FRow;
- UINTN RowStart;
- UINTN RowEnd;
- UINTN ColStart;
- UINTN ColEnd;
- UINTN MouseColStart;
- UINTN MouseColEnd;
-
- //
- // judge mouse position whether is in selected area
- //
- //
- // not select
- //
- if ((HMainEditor.SelectStart == 0) || (HMainEditor.SelectEnd == 0)) {
- return FALSE;
- }
-
- //
- // calculate the select area
- //
- RowStart = (HMainEditor.SelectStart - 1) / 0x10 + 1;
- RowEnd = (HMainEditor.SelectEnd - 1) / 0x10 + 1;
-
- ColStart = (HMainEditor.SelectStart - 1) % 0x10 + 1;
- ColEnd = (HMainEditor.SelectEnd - 1) % 0x10 + 1;
-
- FRow = HBufferImage.LowVisibleRow + MouseRow - 2;
- if ((FRow < RowStart) || (FRow > RowEnd)) {
- return FALSE;
- }
-
- if (FRow > RowStart) {
- ColStart = 1;
- }
-
- if (FRow < RowEnd) {
- ColEnd = 0x10;
- }
-
- MouseColStart = 10 + (ColStart - 1) * 3;
- if (ColStart > 8) {
- MouseColStart++;
- }
-
- MouseColEnd = 10 + (ColEnd - 1) * 3 + 1;
- if (ColEnd > 8) {
- MouseColEnd++;
- }
-
- if ((MouseCol < MouseColStart) || (MouseCol > MouseColEnd)) {
- return FALSE;
- }
-
- return TRUE;
-}
-
-/**
- Set mouse position according to HBufferImage.MousePosition.
-
- @retval EFI_SUCCESS The operation was successful.
-**/
-EFI_STATUS
-HBufferImageRestoreMousePosition (
- VOID
- )
-{
- HEFI_EDITOR_COLOR_UNION Orig;
- HEFI_EDITOR_COLOR_UNION New;
- UINTN FRow;
- UINTN FColumn;
- BOOLEAN HasCharacter;
- HEFI_EDITOR_LINE *CurrentLine;
- HEFI_EDITOR_LINE *Line;
- UINT8 Value;
- BOOLEAN HighBits;
-
- Line = NULL;
- if (HMainEditor.MouseSupported) {
- if (HBufferImageMouseNeedRefresh) {
- HBufferImageMouseNeedRefresh = FALSE;
-
- //
- // if mouse position not moved and only mouse action
- // so do not need to refresh mouse position
- //
- if ((
- (HBufferImage.MousePosition.Row == HBufferImageBackupVar.MousePosition.Row) &&
- (HBufferImage.MousePosition.Column == HBufferImageBackupVar.MousePosition.Column)
- ) &&
- HEditorMouseAction
- )
- {
- return EFI_SUCCESS;
- }
-
- //
- // backup the old screen attributes
- //
- Orig = HMainEditor.ColorAttributes;
- New.Data = 0;
- New.Colors.Foreground = Orig.Colors.Background & 0xF;
- New.Colors.Background = Orig.Colors.Foreground & 0x7;
-
- //
- // if in selected area,
- // so do not need to refresh mouse
- //
- if (!HBufferImageIsInSelectedArea (
- HBufferImageBackupVar.MousePosition.Row,
- HBufferImageBackupVar.MousePosition.Column
- ))
- {
- gST->ConOut->SetAttribute (gST->ConOut, Orig.Data);
- } else {
- gST->ConOut->SetAttribute (gST->ConOut, New.Data & 0x7F);
- }
-
- //
- // clear the old mouse position
- //
- FRow = HBufferImage.LowVisibleRow + HBufferImageBackupVar.MousePosition.Row - 2;
-
- HighBits = HBufferImageIsAtHighBits (
- HBufferImageBackupVar.MousePosition.Column,
- &FColumn
- );
-
- HasCharacter = TRUE;
- if ((FRow > HBufferImage.NumLines) || (FColumn == 0)) {
- HasCharacter = FALSE;
- } else {
- CurrentLine = HBufferImage.CurrentLine;
- Line = HMoveLine (FRow - HBufferImage.BufferPosition.Row);
-
- if ((Line == NULL) || (FColumn > Line->Size)) {
- HasCharacter = FALSE;
- }
-
- HBufferImage.CurrentLine = CurrentLine;
- }
-
- ShellPrintEx (
- (INT32)HBufferImageBackupVar.MousePosition.Column - 1,
- (INT32)HBufferImageBackupVar.MousePosition.Row - 1,
- L" "
- );
-
- if (HasCharacter) {
- if (HighBits) {
- Value = (UINT8)(Line->Buffer[FColumn - 1] & 0xf0);
- Value = (UINT8)(Value >> 4);
- } else {
- Value = (UINT8)(Line->Buffer[FColumn - 1] & 0xf);
- }
-
- ShellPrintEx (
- (INT32)HBufferImageBackupVar.MousePosition.Column - 1,
- (INT32)HBufferImageBackupVar.MousePosition.Row - 1,
- L"%x",
- Value
- );
- }
-
- if (!HBufferImageIsInSelectedArea (
- HBufferImage.MousePosition.Row,
- HBufferImage.MousePosition.Column
- ))
- {
- gST->ConOut->SetAttribute (gST->ConOut, New.Data & 0x7F);
- } else {
- gST->ConOut->SetAttribute (gST->ConOut, Orig.Data);
- }
-
- //
- // clear the old mouse position
- //
- FRow = HBufferImage.LowVisibleRow + HBufferImage.MousePosition.Row - 2;
-
- HighBits = HBufferImageIsAtHighBits (
- HBufferImage.MousePosition.Column,
- &FColumn
- );
-
- HasCharacter = TRUE;
- if ((FRow > HBufferImage.NumLines) || (FColumn == 0)) {
- HasCharacter = FALSE;
- } else {
- CurrentLine = HBufferImage.CurrentLine;
- Line = HMoveLine (FRow - HBufferImage.BufferPosition.Row);
-
- if ((Line == NULL) || (FColumn > Line->Size)) {
- HasCharacter = FALSE;
- }
-
- HBufferImage.CurrentLine = CurrentLine;
- }
-
- ShellPrintEx (
- (INT32)HBufferImage.MousePosition.Column - 1,
- (INT32)HBufferImage.MousePosition.Row - 1,
- L" "
- );
-
- if (HasCharacter) {
- if (HighBits) {
- Value = (UINT8)(Line->Buffer[FColumn - 1] & 0xf0);
- Value = (UINT8)(Value >> 4);
- } else {
- Value = (UINT8)(Line->Buffer[FColumn - 1] & 0xf);
- }
-
- ShellPrintEx (
- (INT32)HBufferImage.MousePosition.Column - 1,
- (INT32)HBufferImage.MousePosition.Row - 1,
- L"%x",
- Value
- );
- }
-
- //
- // end of HasCharacter
- //
- gST->ConOut->SetAttribute (gST->ConOut, Orig.Data);
- }
-
- //
- // end of MouseNeedRefresh
- //
- }
-
- //
- // end of MouseSupported
- //
- return EFI_SUCCESS;
-}
-
-/**
- Set cursor position according to HBufferImage.DisplayPosition.
-
- @retval EFI_SUCCESS The operation was successful.
-**/
-EFI_STATUS
-HBufferImageRestorePosition (
- VOID
- )
-{
- //
- // set cursor position
- //
- gST->ConOut->SetCursorPosition (
- gST->ConOut,
- HBufferImage.DisplayPosition.Column - 1,
- HBufferImage.DisplayPosition.Row - 1
- );
-
- return EFI_SUCCESS;
-}
-
-/**
- Refresh function for HBufferImage.
-
- @retval EFI_SUCCESS The operation was successful.
- @retval EFI_LOAD_ERROR A Load error occurred.
-
-**/
-EFI_STATUS
-HBufferImageRefresh (
- VOID
- )
-{
- LIST_ENTRY *Link;
- HEFI_EDITOR_LINE *Line;
- UINTN Row;
- HEFI_EDITOR_COLOR_UNION Orig;
- HEFI_EDITOR_COLOR_UNION New;
-
- UINTN StartRow;
- UINTN EndRow;
- UINTN FStartRow;
- UINTN Tmp;
-
- Orig = HMainEditor.ColorAttributes;
- New.Data = 0;
- New.Colors.Foreground = Orig.Colors.Background;
- New.Colors.Background = Orig.Colors.Foreground;
-
- //
- // if it's the first time after editor launch, so should refresh
- //
- if (HEditorFirst == FALSE) {
- //
- // no definite required refresh
- // and file position displayed on screen has not been changed
- //
- if (!HBufferImageNeedRefresh &&
- !HBufferImageOnlyLineNeedRefresh &&
- (HBufferImageBackupVar.LowVisibleRow == HBufferImage.LowVisibleRow)
- )
- {
- HBufferImageRestoreMousePosition ();
- HBufferImageRestorePosition ();
- return EFI_SUCCESS;
- }
- }
-
- gST->ConOut->EnableCursor (gST->ConOut, FALSE);
-
- //
- // only need to refresh current line
- //
- if (HBufferImageOnlyLineNeedRefresh && (HBufferImageBackupVar.LowVisibleRow == HBufferImage.LowVisibleRow)) {
- HBufferImagePrintLine (
- HBufferImage.CurrentLine,
- HBufferImage.DisplayPosition.Row,
- HBufferImage.BufferPosition.Row,
- Orig,
- New
- );
- } else {
- //
- // the whole edit area need refresh
- //
- if (HEditorMouseAction && (HMainEditor.SelectStart != 0) && (HMainEditor.SelectEnd != 0)) {
- if (HMainEditor.SelectStart != HMainEditorBackupVar.SelectStart) {
- if ((HMainEditor.SelectStart >= HMainEditorBackupVar.SelectStart) && (HMainEditorBackupVar.SelectStart != 0)) {
- StartRow = (HMainEditorBackupVar.SelectStart - 1) / 0x10 + 1;
- } else {
- StartRow = (HMainEditor.SelectStart - 1) / 0x10 + 1;
- }
- } else {
- StartRow = (HMainEditor.SelectStart - 1) / 0x10 + 1;
- }
-
- if (HMainEditor.SelectEnd <= HMainEditorBackupVar.SelectEnd) {
- EndRow = (HMainEditorBackupVar.SelectEnd - 1) / 0x10 + 1;
- } else {
- EndRow = (HMainEditor.SelectEnd - 1) / 0x10 + 1;
- }
-
- //
- // swap
- //
- if (StartRow > EndRow) {
- Tmp = StartRow;
- StartRow = EndRow;
- EndRow = Tmp;
- }
-
- FStartRow = StartRow;
-
- StartRow = 2 + StartRow - HBufferImage.LowVisibleRow;
- EndRow = 2 + EndRow - HBufferImage.LowVisibleRow;
- } else {
- //
- // not mouse selection actions
- //
- FStartRow = HBufferImage.LowVisibleRow;
- StartRow = 2;
- EndRow = (HMainEditor.ScreenSize.Row - 1);
- }
-
- //
- // no line
- //
- if (HBufferImage.Lines == NULL) {
- HBufferImageRestoreMousePosition ();
- HBufferImageRestorePosition ();
- gST->ConOut->EnableCursor (gST->ConOut, TRUE);
- return EFI_SUCCESS;
- }
-
- //
- // get the first line that will be displayed
- //
- Line = HMoveLine (FStartRow - HBufferImage.BufferPosition.Row);
- if (Line == NULL) {
- gST->ConOut->EnableCursor (gST->ConOut, TRUE);
- return EFI_LOAD_ERROR;
- }
-
- Link = &(Line->Link);
- Row = StartRow;
- do {
- Line = CR (Link, HEFI_EDITOR_LINE, Link, EFI_EDITOR_LINE_LIST);
-
- //
- // print line at row
- //
- HBufferImagePrintLine (
- Line,
- Row,
- HBufferImage.LowVisibleRow + Row - 2,
- Orig,
- New
- );
-
- Link = Link->ForwardLink;
- Row++;
- } while (Link != HBufferImage.ListHead && Row <= EndRow);
-
- while (Row <= EndRow) {
- EditorClearLine (Row, HMainEditor.ScreenSize.Column, HMainEditor.ScreenSize.Row);
- Row++;
- }
-
- //
- // while not file end and not screen full
- //
- }
-
- HBufferImageRestoreMousePosition ();
- HBufferImageRestorePosition ();
-
- HBufferImageNeedRefresh = FALSE;
- HBufferImageOnlyLineNeedRefresh = FALSE;
- gST->ConOut->EnableCursor (gST->ConOut, TRUE);
-
- return EFI_SUCCESS;
-}
-
-/**
- Read an image into a buffer friom a source.
-
- @param[in] FileName Pointer to the file name. OPTIONAL and ignored if not FileTypeFileBuffer.
- @param[in] DiskName Pointer to the disk name. OPTIONAL and ignored if not FileTypeDiskBuffer.
- @param[in] DiskOffset Offset into the disk. OPTIONAL and ignored if not FileTypeDiskBuffer.
- @param[in] DiskSize Size of the disk buffer. OPTIONAL and ignored if not FileTypeDiskBuffer.
- @param[in] MemOffset Offset into the Memory. OPTIONAL and ignored if not FileTypeMemBuffer.
- @param[in] MemSize Size of the Memory buffer. OPTIONAL and ignored if not FileTypeMemBuffer.
- @param[in] BufferType The type of buffer to save. IGNORED.
- @param[in] Recover TRUE for recovermode, FALSE otherwise.
-
- @return EFI_SUCCESS The operation was successful.
-**/
-EFI_STATUS
-HBufferImageRead (
- IN CONST CHAR16 *FileName,
- IN CONST CHAR16 *DiskName,
- IN UINTN DiskOffset,
- IN UINTN DiskSize,
- IN UINTN MemOffset,
- IN UINTN MemSize,
- IN EDIT_FILE_TYPE BufferType,
- IN BOOLEAN Recover
- )
-{
- EFI_STATUS Status;
- EDIT_FILE_TYPE BufferTypeBackup;
-
- //
- // variable initialization
- //
- Status = EFI_SUCCESS;
- HBufferImage.BufferType = BufferType;
-
- //
- // three types of buffer supported
- // file buffer
- // disk buffer
- // memory buffer
- //
- BufferTypeBackup = HBufferImage.BufferType;
-
- switch (BufferType) {
- case FileTypeFileBuffer:
- Status = HFileImageRead (FileName, Recover);
- break;
-
- case FileTypeDiskBuffer:
- Status = HDiskImageRead (DiskName, DiskOffset, DiskSize, Recover);
- break;
-
- case FileTypeMemBuffer:
- Status = HMemImageRead (MemOffset, MemSize, Recover);
- break;
-
- default:
- Status = EFI_NOT_FOUND;
- break;
- }
-
- if (EFI_ERROR (Status)) {
- HBufferImage.BufferType = BufferTypeBackup;
- }
-
- return Status;
-}
-
-/**
- Save the current image.
-
- @param[in] FileName Pointer to the file name. OPTIONAL and ignored if not FileTypeFileBuffer.
- @param[in] DiskName Pointer to the disk name. OPTIONAL and ignored if not FileTypeDiskBuffer.
- @param[in] DiskOffset Offset into the disk. OPTIONAL and ignored if not FileTypeDiskBuffer.
- @param[in] DiskSize Size of the disk buffer. OPTIONAL and ignored if not FileTypeDiskBuffer.
- @param[in] MemOffset Offset into the Memory. OPTIONAL and ignored if not FileTypeMemBuffer.
- @param[in] MemSize Size of the Memory buffer. OPTIONAL and ignored if not FileTypeMemBuffer.
- @param[in] BufferType The type of buffer to save. IGNORED.
-
- @return EFI_SUCCESS The operation was successful.
-**/
-EFI_STATUS
-HBufferImageSave (
- IN CHAR16 *FileName,
- IN CHAR16 *DiskName,
- IN UINTN DiskOffset,
- IN UINTN DiskSize,
- IN UINTN MemOffset,
- IN UINTN MemSize,
- IN EDIT_FILE_TYPE BufferType
- )
-{
- EFI_STATUS Status;
- EDIT_FILE_TYPE BufferTypeBackup;
-
- //
- // variable initialization
- //
- Status = EFI_SUCCESS;
- BufferTypeBackup = HBufferImage.BufferType;
-
- switch (HBufferImage.BufferType) {
- //
- // file buffer
- //
- case FileTypeFileBuffer:
- Status = HFileImageSave (FileName);
- break;
-
- //
- // disk buffer
- //
- case FileTypeDiskBuffer:
- Status = HDiskImageSave (DiskName, DiskOffset, DiskSize);
- break;
-
- //
- // memory buffer
- //
- case FileTypeMemBuffer:
- Status = HMemImageSave (MemOffset, MemSize);
- break;
-
- default:
- Status = EFI_NOT_FOUND;
- break;
- }
-
- if (EFI_ERROR (Status)) {
- HBufferImage.BufferType = BufferTypeBackup;
- }
-
- return Status;
-}
-
-/**
- Create a new line and append it to the line list.
- Fields affected:
- NumLines
- Lines
-
- @retval NULL create line failed.
- @return the line created.
-
-**/
-HEFI_EDITOR_LINE *
-HBufferImageCreateLine (
- VOID
- )
-{
- HEFI_EDITOR_LINE *Line;
-
- //
- // allocate for line structure
- //
- Line = AllocateZeroPool (sizeof (HEFI_EDITOR_LINE));
- if (Line == NULL) {
- return NULL;
- }
-
- Line->Signature = EFI_EDITOR_LINE_LIST;
- Line->Size = 0;
-
- HBufferImage.NumLines++;
-
- //
- // insert to line list
- //
- InsertTailList (HBufferImage.ListHead, &Line->Link);
-
- if (HBufferImage.Lines == NULL) {
- HBufferImage.Lines = CR (
- HBufferImage.ListHead->ForwardLink,
- HEFI_EDITOR_LINE,
- Link,
- EFI_EDITOR_LINE_LIST
- );
- }
-
- return Line;
-}
-
-/**
- Free the current image.
-
- @retval EFI_SUCCESS The operation was successful.
-**/
-EFI_STATUS
-HBufferImageFree (
- VOID
- )
-{
- //
- // free all lines
- //
- HBufferImageFreeLines ();
-
- return EFI_SUCCESS;
-}
-
-/**
- change char to int value based on Hex.
-
- @param[in] Char The input char.
-
- @return The character's index value.
- @retval -1 The operation failed.
-**/
-INTN
-HBufferImageCharToHex (
- IN CHAR16 Char
- )
-{
- //
- // change the character to hex
- //
- if ((Char >= L'0') && (Char <= L'9')) {
- return (Char - L'0');
- }
-
- if ((Char >= L'a') && (Char <= L'f')) {
- return (Char - L'a' + 10);
- }
-
- if ((Char >= L'A') && (Char <= L'F')) {
- return (Char - L'A' + 10);
- }
-
- return -1;
-}
-
-/**
- Add character.
-
- @param[in] Char -- input char.
-
- @retval EFI_SUCCESS The operation was successful.
- @retval EFI_OUT_OF_RESOURCES A memory allocation failed.
-**/
-EFI_STATUS
-HBufferImageAddChar (
- IN CHAR16 Char
- )
-{
- HEFI_EDITOR_LINE *Line;
- HEFI_EDITOR_LINE *NewLine;
- INTN Value;
- UINT8 Old;
- UINTN FRow;
- UINTN FCol;
- BOOLEAN High;
-
- Value = HBufferImageCharToHex (Char);
-
- //
- // invalid input
- //
- if (Value == -1) {
- return EFI_SUCCESS;
- }
-
- Line = HBufferImage.CurrentLine;
- FRow = HBufferImage.BufferPosition.Row;
- FCol = HBufferImage.BufferPosition.Column;
- High = HBufferImage.HighBits;
-
- //
- // only needs to refresh current line
- //
- HBufferImageOnlyLineNeedRefresh = TRUE;
-
- //
- // not a full line and beyond the last character
- //
- if (FCol > Line->Size) {
- //
- // cursor always at high 4 bits
- // and always put input to the low 4 bits
- //
- Line->Buffer[Line->Size] = (UINT8)Value;
- Line->Size++;
- High = FALSE;
- } else {
- Old = Line->Buffer[FCol - 1];
-
- //
- // always put the input to the low 4 bits
- //
- Old = (UINT8)(Old & 0x0f);
- Old = (UINT8)(Old << 4);
- Old = (UINT8)(Value + Old);
- Line->Buffer[FCol - 1] = Old;
-
- //
- // at the low 4 bits of the last character of a full line
- // so if no next line, need to create a new line
- //
- if (!High && (FCol == 0x10)) {
- HBufferImageOnlyLineNeedRefresh = FALSE;
- HBufferImageNeedRefresh = TRUE;
-
- if (Line->Link.ForwardLink == HBufferImage.ListHead) {
- //
- // last line
- //
- // create a new line
- //
- NewLine = HBufferImageCreateLine ();
- if (NewLine == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- //
- // end of NULL
- //
- }
-
- //
- // end of == ListHead
- //
- }
-
- //
- // end of == 0x10
- //
- // if already at end of this line, scroll it to the start of next line
- //
- if ((FCol == 0x10) && !High) {
- //
- // definitely has next line
- //
- FRow++;
- FCol = 1;
- High = TRUE;
- } else {
- //
- // if not at end of this line, just move to next column
- //
- if (!High) {
- FCol++;
- }
-
- if (High) {
- High = FALSE;
- } else {
- High = TRUE;
- }
- }
-
- //
- // end of ==FALSE
- //
- }
-
- //
- // move cursor to right
- //
- HBufferImageMovePosition (FRow, FCol, High);
-
- if (!HBufferImage.Modified) {
- HBufferImage.Modified = TRUE;
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Delete the previous character.
-
- @retval EFI_SUCCESS The operationw as successful.
-**/
-EFI_STATUS
-HBufferImageDoBackspace (
- VOID
- )
-{
- HEFI_EDITOR_LINE *Line;
-
- UINTN FileColumn;
- UINTN FPos;
- BOOLEAN LastLine;
-
- //
- // variable initialization
- //
- LastLine = FALSE;
-
- //
- // already the first character
- //
- if ((HBufferImage.BufferPosition.Row == 1) && (HBufferImage.BufferPosition.Column == 1)) {
- return EFI_SUCCESS;
- }
-
- FPos = (HBufferImage.BufferPosition.Row - 1) * 0x10 + HBufferImage.BufferPosition.Column - 1;
-
- FileColumn = HBufferImage.BufferPosition.Column;
-
- Line = HBufferImage.CurrentLine;
- LastLine = FALSE;
- if ((Line->Link.ForwardLink == HBufferImage.ListHead) && (FileColumn > 1)) {
- LastLine = TRUE;
- }
-
- HBufferImageDeleteCharacterFromBuffer (FPos - 1, 1, NULL);
-
- //
- // if is the last line
- // then only this line need to be refreshed
- //
- if (LastLine) {
- HBufferImageNeedRefresh = FALSE;
- HBufferImageOnlyLineNeedRefresh = TRUE;
- } else {
- HBufferImageNeedRefresh = TRUE;
- HBufferImageOnlyLineNeedRefresh = FALSE;
- }
-
- if (!HBufferImage.Modified) {
- HBufferImage.Modified = TRUE;
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- ASCII key + Backspace + return.
-
- @param[in] Char The input char.
-
- @retval EFI_SUCCESS The operation was successful.
- @retval EFI_LOAD_ERROR A load error occurred.
- @retval EFI_OUT_OF_RESOURCES A memory allocation failed.
-**/
-EFI_STATUS
-HBufferImageDoCharInput (
- IN CHAR16 Char
- )
-{
- EFI_STATUS Status;
-
- Status = EFI_SUCCESS;
-
- switch (Char) {
- case 0:
- break;
-
- case 0x08:
- Status = HBufferImageDoBackspace ();
- break;
-
- case 0x09:
- case 0x0a:
- case 0x0d:
- //
- // Tabs, Returns are thought as nothing
- //
- break;
-
- default:
- //
- // DEAL WITH ASCII CHAR, filter out thing like ctrl+f
- //
- if ((Char > 127) || (Char < 32)) {
- Status = StatusBarSetStatusString (L"Unknown Command");
- } else {
- Status = HBufferImageAddChar (Char);
- }
-
- break;
- }
-
- return Status;
-}
-
-/**
- Check user specified FileRow is above current screen.
-
- @param[in] FileRow Row of file position ( start from 1 ).
-
- @retval TRUE It is above the current screen.
- @retval FALSE It is not above the current screen.
-
-**/
-BOOLEAN
-HAboveCurrentScreen (
- IN UINTN FileRow
- )
-{
- if (FileRow < HBufferImage.LowVisibleRow) {
- return TRUE;
- }
-
- return FALSE;
-}
-
-/**
- Check user specified FileRow is under current screen.
-
- @param[in] FileRow Row of file position ( start from 1 ).
-
- @retval TRUE It is under the current screen.
- @retval FALSE It is not under the current screen.
-
-**/
-BOOLEAN
-HUnderCurrentScreen (
- IN UINTN FileRow
- )
-{
- if (FileRow > HBufferImage.LowVisibleRow + (HMainEditor.ScreenSize.Row - 2) - 1) {
- return TRUE;
- }
-
- return FALSE;
-}
-
-/**
- According to cursor's file position, adjust screen display.
-
- @param[in] NewFilePosRow Row of file position ( start from 1 ).
- @param[in] NewFilePosCol Column of file position ( start from 1 ).
- @param[in] HighBits Cursor will on high4 bits or low4 bits.
-**/
-VOID
-HBufferImageMovePosition (
- IN UINTN NewFilePosRow,
- IN UINTN NewFilePosCol,
- IN BOOLEAN HighBits
- )
-{
- INTN RowGap;
- UINTN Abs;
- BOOLEAN Above;
- BOOLEAN Under;
- UINTN NewDisplayCol;
-
- //
- // CALCULATE gap between current file position and new file position
- //
- RowGap = NewFilePosRow - HBufferImage.BufferPosition.Row;
-
- Under = HUnderCurrentScreen (NewFilePosRow);
- Above = HAboveCurrentScreen (NewFilePosRow);
-
- HBufferImage.HighBits = HighBits;
-
- //
- // if is below current screen
- //
- if (Under) {
- //
- // display row will be unchanged
- //
- HBufferImage.BufferPosition.Row = NewFilePosRow;
- } else {
- if (Above) {
- //
- // has enough above line, so display row unchanged
- // not has enough above lines, so the first line is
- // at the first display line
- //
- if (NewFilePosRow < (HBufferImage.DisplayPosition.Row - 2 + 1)) {
- HBufferImage.DisplayPosition.Row = NewFilePosRow + 2 - 1;
- }
-
- HBufferImage.BufferPosition.Row = NewFilePosRow;
- } else {
- //
- // in current screen
- //
- HBufferImage.BufferPosition.Row = NewFilePosRow;
- if (RowGap <= 0) {
- Abs = (UINTN)ABS (RowGap);
- HBufferImage.DisplayPosition.Row -= Abs;
- } else {
- HBufferImage.DisplayPosition.Row += RowGap;
- }
- }
- }
-
- HBufferImage.LowVisibleRow = HBufferImage.BufferPosition.Row - (HBufferImage.DisplayPosition.Row - 2);
-
- //
- // always in current screen
- //
- HBufferImage.BufferPosition.Column = NewFilePosCol;
-
- NewDisplayCol = 10 + (NewFilePosCol - 1) * 3;
- if (NewFilePosCol > 0x8) {
- NewDisplayCol++;
- }
-
- if (!HighBits) {
- NewDisplayCol++;
- }
-
- HBufferImage.DisplayPosition.Column = NewDisplayCol;
-
- //
- // let CurrentLine point to correct line;
- //
- HBufferImage.CurrentLine = HMoveCurrentLine (RowGap);
-}
-
-/**
- Scroll cursor to right.
-
- @retval EFI_SUCCESS The operation was successful.
-**/
-EFI_STATUS
-HBufferImageScrollRight (
- VOID
- )
-{
- HEFI_EDITOR_LINE *Line;
- UINTN FRow;
- UINTN FCol;
-
- //
- // scroll right will always move to the high4 bits of the next character
- //
- HBufferImageNeedRefresh = FALSE;
- HBufferImageOnlyLineNeedRefresh = FALSE;
-
- Line = HBufferImage.CurrentLine;
-
- FRow = HBufferImage.BufferPosition.Row;
- FCol = HBufferImage.BufferPosition.Column;
-
- //
- // this line is not full and no next line
- //
- if (FCol > Line->Size) {
- return EFI_SUCCESS;
- }
-
- //
- // if already at end of this line, scroll it to the start of next line
- //
- if (FCol == 0x10) {
- //
- // has next line
- //
- if (Line->Link.ForwardLink != HBufferImage.ListHead) {
- FRow++;
- FCol = 1;
- } else {
- return EFI_SUCCESS;
- }
- } else {
- //
- // if not at end of this line, just move to next column
- //
- FCol++;
- }
-
- HBufferImageMovePosition (FRow, FCol, TRUE);
-
- return EFI_SUCCESS;
-}
-
-/**
- Scroll cursor to left.
-
- @retval EFI_SUCCESS The operation was successful.
-**/
-EFI_STATUS
-HBufferImageScrollLeft (
- VOID
- )
-{
- HEFI_EDITOR_LINE *Line;
- UINTN FRow;
- UINTN FCol;
-
- HBufferImageNeedRefresh = FALSE;
- HBufferImageOnlyLineNeedRefresh = FALSE;
-
- Line = HBufferImage.CurrentLine;
-
- FRow = HBufferImage.BufferPosition.Row;
- FCol = HBufferImage.BufferPosition.Column;
-
- //
- // if already at start of this line, so move to the end of previous line
- //
- if (FCol <= 1) {
- //
- // has previous line
- //
- if (Line->Link.BackLink != HBufferImage.ListHead) {
- FRow--;
- Line = CR (Line->Link.BackLink, HEFI_EDITOR_LINE, Link, EFI_EDITOR_LINE_LIST);
- FCol = Line->Size;
- } else {
- return EFI_SUCCESS;
- }
- } else {
- //
- // if not at start of this line, just move to previous column
- //
- FCol--;
- }
-
- HBufferImageMovePosition (FRow, FCol, TRUE);
-
- return EFI_SUCCESS;
-}
-
-/**
- Scroll cursor to the next line
-
- @retval EFI_SUCCESS The operation was successful.
-**/
-EFI_STATUS
-HBufferImageScrollDown (
- VOID
- )
-{
- HEFI_EDITOR_LINE *Line;
- UINTN FRow;
- UINTN FCol;
- BOOLEAN HighBits;
-
- Line = HBufferImage.CurrentLine;
-
- FRow = HBufferImage.BufferPosition.Row;
- FCol = HBufferImage.BufferPosition.Column;
- HighBits = HBufferImage.HighBits;
-
- //
- // has next line
- //
- if (Line->Link.ForwardLink != HBufferImage.ListHead) {
- FRow++;
- Line = CR (Line->Link.ForwardLink, HEFI_EDITOR_LINE, Link, EFI_EDITOR_LINE_LIST);
-
- //
- // if the next line is not that long, so move to end of next line
- //
- if (FCol > Line->Size) {
- FCol = Line->Size + 1;
- HighBits = TRUE;
- }
- } else {
- return EFI_SUCCESS;
- }
-
- HBufferImageMovePosition (FRow, FCol, HighBits);
-
- return EFI_SUCCESS;
-}
-
-/**
- Scroll cursor to previous line
-
- @retval EFI_SUCCESS The operation was successful.
-**/
-EFI_STATUS
-HBufferImageScrollUp (
- VOID
- )
-{
- HEFI_EDITOR_LINE *Line;
- UINTN FRow;
- UINTN FCol;
-
- Line = HBufferImage.CurrentLine;
-
- FRow = HBufferImage.BufferPosition.Row;
- FCol = HBufferImage.BufferPosition.Column;
-
- //
- // has previous line
- //
- if (Line->Link.BackLink != HBufferImage.ListHead) {
- FRow--;
- } else {
- return EFI_SUCCESS;
- }
-
- HBufferImageMovePosition (FRow, FCol, HBufferImage.HighBits);
-
- return EFI_SUCCESS;
-}
-
-/**
- Scroll cursor to next page
-
- @retval EFI_SUCCESS The operation was successful.
-**/
-EFI_STATUS
-HBufferImagePageDown (
- VOID
- )
-{
- HEFI_EDITOR_LINE *Line;
- UINTN FRow;
- UINTN FCol;
- UINTN Gap;
- BOOLEAN HighBits;
-
- Line = HBufferImage.CurrentLine;
-
- FRow = HBufferImage.BufferPosition.Row;
- FCol = HBufferImage.BufferPosition.Column;
- HighBits = HBufferImage.HighBits;
-
- //
- // has next page
- //
- if (HBufferImage.NumLines >= FRow + (HMainEditor.ScreenSize.Row - 2)) {
- Gap = (HMainEditor.ScreenSize.Row - 2);
- } else {
- //
- // MOVE CURSOR TO LAST LINE
- //
- Gap = HBufferImage.NumLines - FRow;
- }
-
- //
- // get correct line
- //
- Line = HMoveLine (Gap);
-
- //
- // if that line, is not that long, so move to the end of that line
- //
- if ((Line != NULL) && (FCol > Line->Size)) {
- FCol = Line->Size + 1;
- HighBits = TRUE;
- }
-
- FRow += Gap;
-
- HBufferImageMovePosition (FRow, FCol, HighBits);
-
- return EFI_SUCCESS;
-}
-
-/**
- Scroll cursor to previous page
-
- @retval EFI_SUCCESS The operation was successful.
-**/
-EFI_STATUS
-HBufferImagePageUp (
- VOID
- )
-{
- UINTN FRow;
- UINTN FCol;
- UINTN Gap;
- INTN Retreat;
-
- FRow = HBufferImage.BufferPosition.Row;
- FCol = HBufferImage.BufferPosition.Column;
-
- //
- // has previous page
- //
- if (FRow > (HMainEditor.ScreenSize.Row - 2)) {
- Gap = (HMainEditor.ScreenSize.Row - 2);
- } else {
- //
- // the first line of file will displayed on the first line of screen
- //
- Gap = FRow - 1;
- }
-
- Retreat = Gap;
- Retreat = -Retreat;
-
- FRow -= Gap;
-
- HBufferImageMovePosition (FRow, FCol, HBufferImage.HighBits);
-
- return EFI_SUCCESS;
-}
-
-/**
- Scroll cursor to start of line
-
- @retval EFI_SUCCESS The operation was successful.
-**/
-EFI_STATUS
-HBufferImageHome (
- VOID
- )
-{
- UINTN FRow;
- UINTN FCol;
- BOOLEAN HighBits;
-
- //
- // curosr will at the high bit
- //
- FRow = HBufferImage.BufferPosition.Row;
- FCol = 1;
- HighBits = TRUE;
-
- //
- // move cursor position
- //
- HBufferImageMovePosition (FRow, FCol, HighBits);
-
- return EFI_SUCCESS;
-}
-
-/**
- Scroll cursor to end of line.
-
- @retval EFI_SUCCESS Teh operation was successful.
-**/
-EFI_STATUS
-HBufferImageEnd (
- VOID
- )
-{
- HEFI_EDITOR_LINE *Line;
- UINTN FRow;
- UINTN FCol;
- BOOLEAN HighBits;
-
- //
- // need refresh mouse
- //
- HBufferImageMouseNeedRefresh = TRUE;
-
- Line = HBufferImage.CurrentLine;
-
- FRow = HBufferImage.BufferPosition.Row;
-
- if (Line->Size == 0x10) {
- FCol = Line->Size;
- HighBits = FALSE;
- } else {
- FCol = Line->Size + 1;
- HighBits = TRUE;
- }
-
- //
- // move cursor position
- //
- HBufferImageMovePosition (FRow, FCol, HighBits);
-
- return EFI_SUCCESS;
-}
-
-/**
- Get the size of the open buffer.
-
- @retval The size in bytes.
-**/
-UINTN
-HBufferImageGetTotalSize (
- VOID
- )
-{
- UINTN Size;
-
- HEFI_EDITOR_LINE *Line;
-
- //
- // calculate the total size of whole line list's buffer
- //
- if (HBufferImage.Lines == NULL) {
- return 0;
- }
-
- Line = CR (
- HBufferImage.ListHead->BackLink,
- HEFI_EDITOR_LINE,
- Link,
- EFI_EDITOR_LINE_LIST
- );
- //
- // one line at most 0x10
- //
- Size = 0x10 * (HBufferImage.NumLines - 1) + Line->Size;
-
- return Size;
-}
-
-/**
- Delete character from buffer.
-
- @param[in] Pos Position, Pos starting from 0.
- @param[in] Count The Count of characters to delete.
- @param[out] DeleteBuffer The DeleteBuffer.
-
- @retval EFI_SUCCESS Success
-**/
-EFI_STATUS
-HBufferImageDeleteCharacterFromBuffer (
- IN UINTN Pos,
- IN UINTN Count,
- OUT UINT8 *DeleteBuffer
- )
-{
- UINTN Index;
-
- VOID *Buffer;
- UINT8 *BufferPtr;
- UINTN Size;
-
- HEFI_EDITOR_LINE *Line;
- LIST_ENTRY *Link;
-
- UINTN OldFCol;
- UINTN OldFRow;
- UINTN OldPos;
-
- UINTN NewPos;
-
- EFI_STATUS Status;
-
- Size = HBufferImageGetTotalSize ();
-
- if (Size < Count) {
- return EFI_LOAD_ERROR;
- }
-
- if (Size == 0) {
- return EFI_SUCCESS;
- }
-
- //
- // relocate all the HBufferImage fields
- //
- OldFRow = HBufferImage.BufferPosition.Row;
- OldFCol = HBufferImage.BufferPosition.Column;
- OldPos = (OldFRow - 1) * 0x10 + OldFCol - 1;
-
- if (Pos > 0) {
- //
- // has character before it,
- // so locate according to block's previous character
- //
- NewPos = Pos - 1;
- } else {
- //
- // has no character before it,
- // so locate according to block's next character
- //
- NewPos = 0;
- }
-
- HBufferImageMovePosition (NewPos / 0x10 + 1, NewPos % 0x10 + 1, TRUE);
-
- Buffer = AllocateZeroPool (Size);
- if (Buffer == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- HBufferImageListToBuffer (Buffer, Size);
-
- BufferPtr = (UINT8 *)Buffer;
-
- //
- // pass deleted buffer out
- //
- if (DeleteBuffer != NULL) {
- for (Index = 0; Index < Count; Index++) {
- DeleteBuffer[Index] = BufferPtr[Pos + Index];
- }
- }
-
- //
- // delete the part from Pos
- //
- for (Index = Pos; Index < Size - Count; Index++) {
- BufferPtr[Index] = BufferPtr[Index + Count];
- }
-
- Size -= Count;
-
- HBufferImageFreeLines ();
-
- Status = HBufferImageBufferToList (Buffer, Size);
- FreePool (Buffer);
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- Link = HMainEditor.BufferImage->ListHead->ForwardLink;
- for (Index = 0; Index < NewPos / 0x10; Index++) {
- Link = Link->ForwardLink;
- }
-
- Line = CR (Link, HEFI_EDITOR_LINE, Link, EFI_EDITOR_LINE_LIST);
- HBufferImage.CurrentLine = Line;
-
- //
- // if current cursor position if inside select area
- // then move it to the block's NEXT character
- //
- if ((OldPos >= Pos) && (OldPos < (Pos + Count))) {
- NewPos = Pos;
- } else {
- if (OldPos < Pos) {
- NewPos = OldPos;
- } else {
- NewPos = OldPos - Count;
- }
- }
-
- HBufferImageMovePosition (NewPos / 0x10 + 1, NewPos % 0x10 + 1, TRUE);
-
- return EFI_SUCCESS;
-}
-
-/**
- Add character to buffer, add before pos.
-
- @param[in] Pos Position, Pos starting from 0.
- @param[in] Count Count of characters to add.
- @param[in] AddBuffer Add buffer.
-
- @retval EFI_SUCCESS Success.
-**/
-EFI_STATUS
-HBufferImageAddCharacterToBuffer (
- IN UINTN Pos,
- IN UINTN Count,
- IN UINT8 *AddBuffer
- )
-{
- INTN Index;
-
- VOID *Buffer;
- UINT8 *BufferPtr;
- UINTN Size;
-
- HEFI_EDITOR_LINE *Line;
-
- LIST_ENTRY *Link;
-
- UINTN OldFCol;
- UINTN OldFRow;
- UINTN OldPos;
-
- UINTN NewPos;
-
- Size = HBufferImageGetTotalSize ();
-
- //
- // relocate all the HBufferImage fields
- //
- OldFRow = HBufferImage.BufferPosition.Row;
- OldFCol = HBufferImage.BufferPosition.Column;
- OldPos = (OldFRow - 1) * 0x10 + OldFCol - 1;
-
- //
- // move cursor before Pos
- //
- if (Pos > 0) {
- NewPos = Pos - 1;
- } else {
- NewPos = 0;
- }
-
- HBufferImageMovePosition (NewPos / 0x10 + 1, NewPos % 0x10 + 1, TRUE);
-
- Buffer = AllocateZeroPool (Size + Count);
- if (Buffer == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- HBufferImageListToBuffer (Buffer, Size);
-
- BufferPtr = (UINT8 *)Buffer;
-
- //
- // get a place to add
- //
- for (Index = (INTN)(Size + Count - 1); Index >= (INTN)Pos; Index--) {
- BufferPtr[Index] = BufferPtr[Index - Count];
- }
-
- //
- // add the buffer
- //
- for (Index = (INTN)0; Index < (INTN)Count; Index++) {
- BufferPtr[Index + Pos] = AddBuffer[Index];
- }
-
- Size += Count;
-
- HBufferImageFreeLines ();
-
- HBufferImageBufferToList (Buffer, Size);
-
- FreePool (Buffer);
-
- Link = HMainEditor.BufferImage->ListHead->ForwardLink;
- for (Index = 0; Index < (INTN)NewPos / 0x10; Index++) {
- Link = Link->ForwardLink;
- }
-
- Line = CR (Link, HEFI_EDITOR_LINE, Link, EFI_EDITOR_LINE_LIST);
- HBufferImage.CurrentLine = Line;
-
- if (OldPos >= Pos) {
- NewPos = OldPos + Count;
- } else {
- NewPos = OldPos;
- }
-
- HBufferImageMovePosition (NewPos / 0x10 + 1, NewPos % 0x10 + 1, TRUE);
-
- return EFI_SUCCESS;
-}
-
-/**
- Delete current character from line.
-
- @retval EFI_SUCCESS The operationw as successful.
-**/
-EFI_STATUS
-HBufferImageDoDelete (
- VOID
- )
-{
- HEFI_EDITOR_LINE *Line;
-
- BOOLEAN LastLine;
- UINTN FileColumn;
- UINTN FPos;
-
- FPos = (HBufferImage.BufferPosition.Row - 1) * 0x10 + HBufferImage.BufferPosition.Column - 1;
-
- FileColumn = HBufferImage.BufferPosition.Column;
-
- Line = HBufferImage.CurrentLine;
-
- //
- // if beyond the last character
- //
- if (FileColumn > Line->Size) {
- return EFI_SUCCESS;
- }
-
- LastLine = FALSE;
- if (Line->Link.ForwardLink == HBufferImage.ListHead) {
- LastLine = TRUE;
- }
-
- HBufferImageDeleteCharacterFromBuffer (FPos, 1, NULL);
-
- //
- // if is the last line
- // then only this line need to be refreshed
- //
- if (LastLine) {
- HBufferImageNeedRefresh = FALSE;
- HBufferImageOnlyLineNeedRefresh = TRUE;
- } else {
- HBufferImageNeedRefresh = TRUE;
- HBufferImageOnlyLineNeedRefresh = FALSE;
- }
-
- if (!HBufferImage.Modified) {
- HBufferImage.Modified = TRUE;
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Change the raw buffer to a list of lines for the UI.
-
- @param[in] Buffer The pointer to the buffer to fill.
- @param[in] Bytes The size of the buffer in bytes.
-
- @retval EFI_SUCCESS The operation was successful.
- @retval EFI_OUT_OF_RESOURCES A memory allocation failed.
-**/
-EFI_STATUS
-HBufferImageBufferToList (
- IN VOID *Buffer,
- IN UINTN Bytes
- )
-{
- UINTN TempI;
- UINTN TempJ;
- UINTN Left;
- HEFI_EDITOR_LINE *Line;
- UINT8 *BufferPtr;
-
- TempI = 0;
- Left = 0;
- BufferPtr = (UINT8 *)Buffer;
-
- //
- // parse file content line by line
- //
- while (TempI < Bytes) {
- if (Bytes - TempI >= 0x10) {
- Left = 0x10;
- } else {
- Left = Bytes - TempI;
- }
-
- //
- // allocate a new line
- //
- Line = HBufferImageCreateLine ();
- if (Line == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- Line->Size = Left;
-
- for (TempJ = 0; TempJ < Left; TempJ++) {
- Line->Buffer[TempJ] = BufferPtr[TempI];
- TempI++;
- }
- }
-
- //
- // last line is a full line, SO create a new line
- //
- if ((Left == 0x10) || (Bytes == 0)) {
- Line = HBufferImageCreateLine ();
- if (Line == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Change the list of lines from the UI to a raw buffer.
-
- @param[in] Buffer The pointer to the buffer to fill.
- @param[in] Bytes The size of the buffer in bytes.
-
- @retval EFI_SUCCESS The operation was successful.
-**/
-EFI_STATUS
-HBufferImageListToBuffer (
- IN VOID *Buffer,
- IN UINTN Bytes
- )
-{
- UINTN Count;
- UINTN Index;
- HEFI_EDITOR_LINE *Line;
- LIST_ENTRY *Link;
- UINT8 *BufferPtr;
-
- //
- // change the line list to a large buffer
- //
- if (HBufferImage.Lines == NULL) {
- return EFI_SUCCESS;
- }
-
- Link = &HBufferImage.Lines->Link;
- Count = 0;
- BufferPtr = (UINT8 *)Buffer;
-
- //
- // deal line by line
- //
- while (Link != HBufferImage.ListHead) {
- Line = CR (Link, HEFI_EDITOR_LINE, Link, EFI_EDITOR_LINE_LIST);
-
- // @todo shouldn't this be an error???
- if (Count + Line->Size > Bytes) {
- return EFI_SUCCESS;
- }
-
- for (Index = 0; Index < Line->Size; Index++) {
- BufferPtr[Index] = Line->Buffer[Index];
- }
-
- Count += Line->Size;
- BufferPtr += Line->Size;
-
- Link = Link->ForwardLink;
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Move the mouse in the image buffer.
-
- @param[in] TextX The x-coordinate.
- @param[in] TextY The y-coordinate.
-**/
-VOID
-HBufferImageAdjustMousePosition (
- IN INT32 TextX,
- IN INT32 TextY
- )
-{
- UINTN TempX;
- UINTN TempY;
- UINTN AbsX;
- UINTN AbsY;
-
- //
- // TextX and TextY is mouse movement data returned by mouse driver
- // This function will change it to MousePosition
- //
- //
- // get absolute TempX value
- //
- if (TextX >= 0) {
- AbsX = TextX;
- } else {
- AbsX = -TextX;
- }
-
- //
- // get absolute TempY value
- //
- if (TextY >= 0) {
- AbsY = TextY;
- } else {
- AbsY = -TextY;
- }
-
- TempX = HBufferImage.MousePosition.Column;
- TempY = HBufferImage.MousePosition.Row;
-
- if (TextX >= 0) {
- TempX += TextX;
- } else {
- if (TempX >= AbsX) {
- TempX -= AbsX;
- } else {
- TempX = 0;
- }
- }
-
- if (TextY >= 0) {
- TempY += TextY;
- } else {
- if (TempY >= AbsY) {
- TempY -= AbsY;
- } else {
- TempY = 0;
- }
- }
-
- //
- // check whether new mouse column position is beyond screen
- // if not, adjust it
- //
- if ((TempX >= 10) && (TempX <= (10 + 0x10 * 3 - 1))) {
- HBufferImage.MousePosition.Column = TempX;
- } else if (TempX < 10) {
- HBufferImage.MousePosition.Column = 10;
- } else if (TempX > (10 + 0x10 * 3 - 1)) {
- HBufferImage.MousePosition.Column = 10 + 0x10 * 3 - 1;
- }
-
- //
- // check whether new mouse row position is beyond screen
- // if not, adjust it
- //
- if ((TempY >= 2) && (TempY <= (HMainEditor.ScreenSize.Row - 1))) {
- HBufferImage.MousePosition.Row = TempY;
- } else if (TempY < 2) {
- HBufferImage.MousePosition.Row = 2;
- } else if (TempY > (HMainEditor.ScreenSize.Row - 1)) {
- HBufferImage.MousePosition.Row = (HMainEditor.ScreenSize.Row - 1);
- }
-}
-
-/**
- Dispatch input to different handler
-
- @param[in] Key The input key:
- the keys can be:
- ASCII KEY
- Backspace/Delete
- Direction key: up/down/left/right/pgup/pgdn
- Home/End
- INS
-
- @retval EFI_SUCCESS The operation was successful.
- @retval EFI_LOAD_ERROR A load error occurred.
- @retval EFI_OUT_OF_RESOURCES A Memory allocation failed.
-**/
-EFI_STATUS
-HBufferImageHandleInput (
- IN EFI_INPUT_KEY *Key
- )
-{
- EFI_STATUS Status;
-
- Status = EFI_SUCCESS;
-
- switch (Key->ScanCode) {
- //
- // ordinary key
- //
- case SCAN_NULL:
- Status = HBufferImageDoCharInput (Key->UnicodeChar);
- break;
-
- //
- // up arrow
- //
- case SCAN_UP:
- Status = HBufferImageScrollUp ();
- break;
-
- //
- // down arrow
- //
- case SCAN_DOWN:
- Status = HBufferImageScrollDown ();
- break;
-
- //
- // right arrow
- //
- case SCAN_RIGHT:
- Status = HBufferImageScrollRight ();
- break;
-
- //
- // left arrow
- //
- case SCAN_LEFT:
- Status = HBufferImageScrollLeft ();
- break;
-
- //
- // page up
- //
- case SCAN_PAGE_UP:
- Status = HBufferImagePageUp ();
- break;
-
- //
- // page down
- //
- case SCAN_PAGE_DOWN:
- Status = HBufferImagePageDown ();
- break;
-
- //
- // delete
- //
- case SCAN_DELETE:
- Status = HBufferImageDoDelete ();
- break;
-
- //
- // home
- //
- case SCAN_HOME:
- Status = HBufferImageHome ();
- break;
-
- //
- // end
- //
- case SCAN_END:
- Status = HBufferImageEnd ();
- break;
-
- default:
- Status = StatusBarSetStatusString (L"Unknown Command");
- break;
- }
-
- return Status;
-}
+/** @file
+ Defines HBufferImage - the view of the file that is visible at any point,
+ as well as the event handlers for editing the file
+
+ Copyright (c) 2005 - 2018, Intel Corporation. All rights reserved. <BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "HexEditor.h"
+
+extern EFI_HANDLE HImageHandleBackup;
+
+extern HEFI_EDITOR_FILE_IMAGE HFileImage;
+extern HEFI_EDITOR_DISK_IMAGE HDiskImage;
+extern HEFI_EDITOR_MEM_IMAGE HMemImage;
+
+extern HEFI_EDITOR_FILE_IMAGE HFileImageBackupVar;
+extern HEFI_EDITOR_DISK_IMAGE HDiskImageBackupVar;
+extern HEFI_EDITOR_MEM_IMAGE HMemImageBackupVar;
+
+extern BOOLEAN HEditorMouseAction;
+
+extern HEFI_EDITOR_GLOBAL_EDITOR HMainEditor;
+extern HEFI_EDITOR_GLOBAL_EDITOR HMainEditorBackupVar;
+
+HEFI_EDITOR_BUFFER_IMAGE HBufferImage;
+HEFI_EDITOR_BUFFER_IMAGE HBufferImageBackupVar;
+
+//
+// for basic initialization of HBufferImage
+//
+HEFI_EDITOR_BUFFER_IMAGE HBufferImageConst = {
+ NULL,
+ NULL,
+ 0,
+ NULL,
+ {
+ 0,
+ 0
+ },
+ {
+ 0,
+ 0
+ },
+ {
+ 0,
+ 0
+ },
+ 0,
+ TRUE,
+ FALSE,
+ FileTypeNone,
+ NULL,
+ NULL,
+ NULL
+};
+
+//
+// the whole edit area needs to be refreshed
+//
+BOOLEAN HBufferImageNeedRefresh;
+
+//
+// only the current line in edit area needs to be refresh
+//
+BOOLEAN HBufferImageOnlyLineNeedRefresh;
+
+BOOLEAN HBufferImageMouseNeedRefresh;
+
+/**
+ Initialization function for HBufferImage
+
+ @retval EFI_SUCCESS The operation was successful.
+ @retval EFI_LOAD_ERROR A load error occurred.
+**/
+EFI_STATUS
+HBufferImageInit (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+
+ //
+ // basically initialize the HBufferImage
+ //
+ CopyMem (&HBufferImage, &HBufferImageConst, sizeof (HBufferImage));
+
+ //
+ // INIT listhead
+ //
+ HBufferImage.ListHead = AllocateZeroPool (sizeof (LIST_ENTRY));
+ if (HBufferImage.ListHead == NULL) {
+ return EFI_LOAD_ERROR;
+ }
+
+ InitializeListHead (HBufferImage.ListHead);
+
+ HBufferImage.DisplayPosition.Row = 2;
+ HBufferImage.DisplayPosition.Column = 10;
+ HBufferImage.MousePosition.Row = 2;
+ HBufferImage.MousePosition.Column = 10;
+
+ HBufferImage.FileImage = &HFileImage;
+ HBufferImage.DiskImage = &HDiskImage;
+ HBufferImage.MemImage = &HMemImage;
+
+ HBufferImageNeedRefresh = FALSE;
+ HBufferImageOnlyLineNeedRefresh = FALSE;
+ HBufferImageMouseNeedRefresh = FALSE;
+
+ HBufferImageBackupVar.FileImage = &HFileImageBackupVar;
+ HBufferImageBackupVar.DiskImage = &HDiskImageBackupVar;
+ HBufferImageBackupVar.MemImage = &HMemImageBackupVar;
+
+ Status = HFileImageInit ();
+ if (EFI_ERROR (Status)) {
+ return EFI_LOAD_ERROR;
+ }
+
+ Status = HDiskImageInit ();
+ if (EFI_ERROR (Status)) {
+ return EFI_LOAD_ERROR;
+ }
+
+ Status = HMemImageInit ();
+ if (EFI_ERROR (Status)) {
+ return EFI_LOAD_ERROR;
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Backup function for HBufferImage. Only a few fields need to be backup.
+ This is for making the file buffer refresh as few as possible.
+
+ @retval EFI_SUCCESS The operation was successful.
+**/
+EFI_STATUS
+HBufferImageBackup (
+ VOID
+ )
+{
+ HBufferImageBackupVar.MousePosition = HBufferImage.MousePosition;
+
+ HBufferImageBackupVar.BufferPosition = HBufferImage.BufferPosition;
+
+ HBufferImageBackupVar.Modified = HBufferImage.Modified;
+
+ HBufferImageBackupVar.BufferType = HBufferImage.BufferType;
+ HBufferImageBackupVar.LowVisibleRow = HBufferImage.LowVisibleRow;
+ HBufferImageBackupVar.HighBits = HBufferImage.HighBits;
+
+ //
+ // three kinds of buffer supported
+ // file buffer
+ // disk buffer
+ // memory buffer
+ //
+ switch (HBufferImage.BufferType) {
+ case FileTypeFileBuffer:
+ HFileImageBackup ();
+ break;
+
+ case FileTypeDiskBuffer:
+ HDiskImageBackup ();
+ break;
+
+ case FileTypeMemBuffer:
+ HMemImageBackup ();
+ break;
+
+ default:
+ break;
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Free all the lines in HBufferImage.
+ Fields affected:
+ Lines
+ CurrentLine
+ NumLines
+ ListHead
+
+ @retval EFI_SUCCESS The operation was successful.
+**/
+EFI_STATUS
+HBufferImageFreeLines (
+ VOID
+ )
+{
+ HFreeLines (HBufferImage.ListHead, HBufferImage.Lines);
+
+ HBufferImage.Lines = NULL;
+ HBufferImage.CurrentLine = NULL;
+ HBufferImage.NumLines = 0;
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Cleanup function for HBufferImage
+
+ @retval EFI_SUCCESS The operation was successful.
+**/
+EFI_STATUS
+HBufferImageCleanup (
+ VOID
+ )
+{
+ EFI_STATUS Status;
+
+ //
+ // free all the lines
+ //
+ Status = HBufferImageFreeLines ();
+
+ SHELL_FREE_NON_NULL (HBufferImage.ListHead);
+ HBufferImage.ListHead = NULL;
+
+ HFileImageCleanup ();
+ HDiskImageCleanup ();
+
+ return Status;
+}
+
+/**
+ Print Line on Row
+
+ @param[in] Line The lline to print.
+ @param[in] Row The row on screen ( begin from 1 ).
+ @param[in] FRow The FRow.
+ @param[in] Orig The original color.
+ @param[in] New The color to print with.
+
+ @retval EFI_SUCCESS The operation was successful.
+**/
+EFI_STATUS
+HBufferImagePrintLine (
+ IN HEFI_EDITOR_LINE *Line,
+ IN UINTN Row,
+ IN UINTN FRow,
+ IN HEFI_EDITOR_COLOR_UNION Orig,
+ IN HEFI_EDITOR_COLOR_UNION New
+
+ )
+{
+ UINTN Index;
+ UINTN Pos;
+ BOOLEAN Selected;
+ BOOLEAN BeNewColor;
+ UINTN RowStart;
+ UINTN RowEnd;
+ UINTN ColStart;
+ UINTN ColEnd;
+
+ //
+ // variable initialization
+ //
+ ColStart = 0;
+ ColEnd = 0;
+ Selected = FALSE;
+
+ //
+ // print the selected area in opposite color
+ //
+ if ((HMainEditor.SelectStart != 0) && (HMainEditor.SelectEnd != 0)) {
+ RowStart = (HMainEditor.SelectStart - 1) / 0x10 + 1;
+ RowEnd = (HMainEditor.SelectEnd - 1) / 0x10 + 1;
+
+ ColStart = (HMainEditor.SelectStart - 1) % 0x10 + 1;
+ ColEnd = (HMainEditor.SelectEnd - 1) % 0x10 + 1;
+
+ if ((FRow >= RowStart) && (FRow <= RowEnd)) {
+ Selected = TRUE;
+ }
+
+ if (FRow > RowStart) {
+ ColStart = 1;
+ }
+
+ if (FRow < RowEnd) {
+ ColEnd = 0x10;
+ }
+ }
+
+ if (!HEditorMouseAction) {
+ ShellPrintEx (
+ 0,
+ (INT32)Row - 1,
+ L"%8X ",
+ ((INT32)Row - 2 + HBufferImage.LowVisibleRow - 1) * 0x10
+ );
+ }
+
+ for (Index = 0; Index < 0x08 && Index < Line->Size; Index++) {
+ BeNewColor = FALSE;
+
+ if (Selected) {
+ if ((Index + 1 >= ColStart) && (Index + 1 <= ColEnd)) {
+ BeNewColor = TRUE;
+ }
+ }
+
+ if (BeNewColor) {
+ gST->ConOut->SetAttribute (gST->ConOut, New.Data & 0x7F);
+ } else {
+ gST->ConOut->SetAttribute (gST->ConOut, Orig.Data & 0x7F);
+ }
+
+ Pos = 10 + (Index * 3);
+ if (Line->Buffer[Index] < 0x10) {
+ ShellPrintEx ((INT32)Pos - 1, (INT32)Row - 1, L"0");
+ Pos++;
+ }
+
+ if (Index < 0x07) {
+ ShellPrintEx ((INT32)Pos - 1, (INT32)Row - 1, L"%x ", Line->Buffer[Index]);
+ } else {
+ ShellPrintEx ((INT32)Pos - 1, (INT32)Row - 1, L"%x ", Line->Buffer[Index]);
+ }
+ }
+
+ gST->ConOut->SetAttribute (gST->ConOut, Orig.Data & 0x7F);
+ while (Index < 0x08) {
+ Pos = 10 + (Index * 3);
+ ShellPrintEx ((INT32)Pos - 1, (INT32)Row - 1, L" ");
+ Index++;
+ }
+
+ while (Index < 0x10 && Index < Line->Size) {
+ BeNewColor = FALSE;
+
+ if (Selected) {
+ if ((Index + 1 >= ColStart) && (Index + 1 <= ColEnd)) {
+ BeNewColor = TRUE;
+ }
+ }
+
+ if (BeNewColor) {
+ gST->ConOut->SetAttribute (gST->ConOut, New.Data & 0x7F);
+ } else {
+ gST->ConOut->SetAttribute (gST->ConOut, Orig.Data & 0x7F);
+ }
+
+ Pos = 10 + (Index * 3) + 1;
+ if (Line->Buffer[Index] < 0x10) {
+ ShellPrintEx ((INT32)Pos - 1, (INT32)Row - 1, L"0");
+ Pos++;
+ }
+
+ ShellPrintEx ((INT32)Pos - 1, (INT32)Row - 1, L"%x ", Line->Buffer[Index]);
+ Index++;
+ }
+
+ gST->ConOut->SetAttribute (gST->ConOut, Orig.Data & 0x7F);
+ while (Index < 0x10) {
+ Pos = 10 + (Index * 3) + 1;
+ ShellPrintEx ((INT32)Pos - 1, (INT32)Row - 1, L" ");
+ Index++;
+ }
+
+ //
+ // restore the original color
+ //
+ gST->ConOut->SetAttribute (gST->ConOut, Orig.Data & 0x7F);
+
+ //
+ // PRINT the buffer content
+ //
+ if (!HEditorMouseAction) {
+ for (Index = 0; Index < 0x10 && Index < Line->Size; Index++) {
+ Pos = ASCII_POSITION + Index;
+
+ //
+ // learned from shelle.h -- IsValidChar
+ //
+ if (Line->Buffer[Index] >= L' ') {
+ ShellPrintEx ((INT32)Pos - 1, (INT32)Row - 1, L"%c", (CHAR16)Line->Buffer[Index]);
+ } else {
+ ShellPrintEx ((INT32)Pos - 1, (INT32)Row - 1, L"%c", '.');
+ }
+ }
+
+ while (Index < 0x10) {
+ Pos = ASCII_POSITION + Index;
+ ShellPrintEx ((INT32)Pos - 1, (INT32)Row - 1, L" ");
+ Index++;
+ }
+ }
+
+ //
+ // restore the abundant blank in hex edit area to original color
+ //
+ if (Selected) {
+ if (ColEnd <= 7) {
+ Pos = 10 + (ColEnd - 1) * 3 + 2;
+ ShellPrintEx ((INT32)Pos - 1, (INT32)Row - 1, L" ");
+ } else if (ColEnd == 8) {
+ Pos = 10 + (ColEnd - 1) * 3 + 2;
+ ShellPrintEx ((INT32)Pos - 1, (INT32)Row - 1, L" ");
+ } else {
+ Pos = 10 + (ColEnd - 1) * 3 + 3;
+ ShellPrintEx ((INT32)Pos - 1, (INT32)Row - 1, L" ");
+ }
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Function to decide if a column number is stored in the high bits.
+
+ @param[in] Column The column to examine.
+ @param[out] FCol The actual column number.
+
+ @retval TRUE The actual column was in high bits and is now in FCol.
+ @retval FALSE There was not a column number in the high bits.
+**/
+BOOLEAN
+HBufferImageIsAtHighBits (
+ IN UINTN Column,
+ OUT UINTN *FCol
+ )
+{
+ Column -= 10;
+
+ //
+ // NOW AFTER THE SUB, Column start from 0
+ // 23 AND 24 ARE BOTH BLANK
+ //
+ if (Column == 24) {
+ *FCol = 0;
+ return FALSE;
+ }
+
+ if (Column > 24) {
+ Column--;
+ }
+
+ *FCol = (Column / 3) + 1;
+
+ if (Column % 3 == 0) {
+ return TRUE;
+ }
+
+ if ((Column % 3 == 2)) {
+ *FCol = 0;
+ }
+
+ return FALSE;
+}
+
+/**
+ Decide if a point is in the already selected area.
+
+ @param[in] MouseRow The row of the point to test.
+ @param[in] MouseCol The col of the point to test.
+
+ @retval TRUE The point is in the selected area.
+ @retval FALSE The point is not in the selected area.
+**/
+BOOLEAN
+HBufferImageIsInSelectedArea (
+ IN UINTN MouseRow,
+ IN UINTN MouseCol
+ )
+{
+ UINTN FRow;
+ UINTN RowStart;
+ UINTN RowEnd;
+ UINTN ColStart;
+ UINTN ColEnd;
+ UINTN MouseColStart;
+ UINTN MouseColEnd;
+
+ //
+ // judge mouse position whether is in selected area
+ //
+ //
+ // not select
+ //
+ if ((HMainEditor.SelectStart == 0) || (HMainEditor.SelectEnd == 0)) {
+ return FALSE;
+ }
+
+ //
+ // calculate the select area
+ //
+ RowStart = (HMainEditor.SelectStart - 1) / 0x10 + 1;
+ RowEnd = (HMainEditor.SelectEnd - 1) / 0x10 + 1;
+
+ ColStart = (HMainEditor.SelectStart - 1) % 0x10 + 1;
+ ColEnd = (HMainEditor.SelectEnd - 1) % 0x10 + 1;
+
+ FRow = HBufferImage.LowVisibleRow + MouseRow - 2;
+ if ((FRow < RowStart) || (FRow > RowEnd)) {
+ return FALSE;
+ }
+
+ if (FRow > RowStart) {
+ ColStart = 1;
+ }
+
+ if (FRow < RowEnd) {
+ ColEnd = 0x10;
+ }
+
+ MouseColStart = 10 + (ColStart - 1) * 3;
+ if (ColStart > 8) {
+ MouseColStart++;
+ }
+
+ MouseColEnd = 10 + (ColEnd - 1) * 3 + 1;
+ if (ColEnd > 8) {
+ MouseColEnd++;
+ }
+
+ if ((MouseCol < MouseColStart) || (MouseCol > MouseColEnd)) {
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+/**
+ Set mouse position according to HBufferImage.MousePosition.
+
+ @retval EFI_SUCCESS The operation was successful.
+**/
+EFI_STATUS
+HBufferImageRestoreMousePosition (
+ VOID
+ )
+{
+ HEFI_EDITOR_COLOR_UNION Orig;
+ HEFI_EDITOR_COLOR_UNION New;
+ UINTN FRow;
+ UINTN FColumn;
+ BOOLEAN HasCharacter;
+ HEFI_EDITOR_LINE *CurrentLine;
+ HEFI_EDITOR_LINE *Line;
+ UINT8 Value;
+ BOOLEAN HighBits;
+
+ Line = NULL;
+ if (HMainEditor.MouseSupported) {
+ if (HBufferImageMouseNeedRefresh) {
+ HBufferImageMouseNeedRefresh = FALSE;
+
+ //
+ // if mouse position not moved and only mouse action
+ // so do not need to refresh mouse position
+ //
+ if ((
+ (HBufferImage.MousePosition.Row == HBufferImageBackupVar.MousePosition.Row) &&
+ (HBufferImage.MousePosition.Column == HBufferImageBackupVar.MousePosition.Column)
+ ) &&
+ HEditorMouseAction
+ )
+ {
+ return EFI_SUCCESS;
+ }
+
+ //
+ // backup the old screen attributes
+ //
+ Orig = HMainEditor.ColorAttributes;
+ New.Data = 0;
+ New.Colors.Foreground = Orig.Colors.Background & 0xF;
+ New.Colors.Background = Orig.Colors.Foreground & 0x7;
+
+ //
+ // if in selected area,
+ // so do not need to refresh mouse
+ //
+ if (!HBufferImageIsInSelectedArea (
+ HBufferImageBackupVar.MousePosition.Row,
+ HBufferImageBackupVar.MousePosition.Column
+ ))
+ {
+ gST->ConOut->SetAttribute (gST->ConOut, Orig.Data);
+ } else {
+ gST->ConOut->SetAttribute (gST->ConOut, New.Data & 0x7F);
+ }
+
+ //
+ // clear the old mouse position
+ //
+ FRow = HBufferImage.LowVisibleRow + HBufferImageBackupVar.MousePosition.Row - 2;
+
+ HighBits = HBufferImageIsAtHighBits (
+ HBufferImageBackupVar.MousePosition.Column,
+ &FColumn
+ );
+
+ HasCharacter = TRUE;
+ if ((FRow > HBufferImage.NumLines) || (FColumn == 0)) {
+ HasCharacter = FALSE;
+ } else {
+ CurrentLine = HBufferImage.CurrentLine;
+ Line = HMoveLine (FRow - HBufferImage.BufferPosition.Row);
+
+ if ((Line == NULL) || (FColumn > Line->Size)) {
+ HasCharacter = FALSE;
+ }
+
+ HBufferImage.CurrentLine = CurrentLine;
+ }
+
+ ShellPrintEx (
+ (INT32)HBufferImageBackupVar.MousePosition.Column - 1,
+ (INT32)HBufferImageBackupVar.MousePosition.Row - 1,
+ L" "
+ );
+
+ if (HasCharacter) {
+ if (HighBits) {
+ Value = (UINT8)(Line->Buffer[FColumn - 1] & 0xf0);
+ Value = (UINT8)(Value >> 4);
+ } else {
+ Value = (UINT8)(Line->Buffer[FColumn - 1] & 0xf);
+ }
+
+ ShellPrintEx (
+ (INT32)HBufferImageBackupVar.MousePosition.Column - 1,
+ (INT32)HBufferImageBackupVar.MousePosition.Row - 1,
+ L"%x",
+ Value
+ );
+ }
+
+ if (!HBufferImageIsInSelectedArea (
+ HBufferImage.MousePosition.Row,
+ HBufferImage.MousePosition.Column
+ ))
+ {
+ gST->ConOut->SetAttribute (gST->ConOut, New.Data & 0x7F);
+ } else {
+ gST->ConOut->SetAttribute (gST->ConOut, Orig.Data);
+ }
+
+ //
+ // clear the old mouse position
+ //
+ FRow = HBufferImage.LowVisibleRow + HBufferImage.MousePosition.Row - 2;
+
+ HighBits = HBufferImageIsAtHighBits (
+ HBufferImage.MousePosition.Column,
+ &FColumn
+ );
+
+ HasCharacter = TRUE;
+ if ((FRow > HBufferImage.NumLines) || (FColumn == 0)) {
+ HasCharacter = FALSE;
+ } else {
+ CurrentLine = HBufferImage.CurrentLine;
+ Line = HMoveLine (FRow - HBufferImage.BufferPosition.Row);
+
+ if ((Line == NULL) || (FColumn > Line->Size)) {
+ HasCharacter = FALSE;
+ }
+
+ HBufferImage.CurrentLine = CurrentLine;
+ }
+
+ ShellPrintEx (
+ (INT32)HBufferImage.MousePosition.Column - 1,
+ (INT32)HBufferImage.MousePosition.Row - 1,
+ L" "
+ );
+
+ if (HasCharacter) {
+ if (HighBits) {
+ Value = (UINT8)(Line->Buffer[FColumn - 1] & 0xf0);
+ Value = (UINT8)(Value >> 4);
+ } else {
+ Value = (UINT8)(Line->Buffer[FColumn - 1] & 0xf);
+ }
+
+ ShellPrintEx (
+ (INT32)HBufferImage.MousePosition.Column - 1,
+ (INT32)HBufferImage.MousePosition.Row - 1,
+ L"%x",
+ Value
+ );
+ }
+
+ //
+ // end of HasCharacter
+ //
+ gST->ConOut->SetAttribute (gST->ConOut, Orig.Data);
+ }
+
+ //
+ // end of MouseNeedRefresh
+ //
+ }
+
+ //
+ // end of MouseSupported
+ //
+ return EFI_SUCCESS;
+}
+
+/**
+ Set cursor position according to HBufferImage.DisplayPosition.
+
+ @retval EFI_SUCCESS The operation was successful.
+**/
+EFI_STATUS
+HBufferImageRestorePosition (
+ VOID
+ )
+{
+ //
+ // set cursor position
+ //
+ gST->ConOut->SetCursorPosition (
+ gST->ConOut,
+ HBufferImage.DisplayPosition.Column - 1,
+ HBufferImage.DisplayPosition.Row - 1
+ );
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Refresh function for HBufferImage.
+
+ @retval EFI_SUCCESS The operation was successful.
+ @retval EFI_LOAD_ERROR A Load error occurred.
+
+**/
+EFI_STATUS
+HBufferImageRefresh (
+ VOID
+ )
+{
+ LIST_ENTRY *Link;
+ HEFI_EDITOR_LINE *Line;
+ UINTN Row;
+ HEFI_EDITOR_COLOR_UNION Orig;
+ HEFI_EDITOR_COLOR_UNION New;
+
+ UINTN StartRow;
+ UINTN EndRow;
+ UINTN FStartRow;
+ UINTN Tmp;
+
+ Orig = HMainEditor.ColorAttributes;
+ New.Data = 0;
+ New.Colors.Foreground = Orig.Colors.Background;
+ New.Colors.Background = Orig.Colors.Foreground;
+
+ //
+ // if it's the first time after editor launch, so should refresh
+ //
+ if (HEditorFirst == FALSE) {
+ //
+ // no definite required refresh
+ // and file position displayed on screen has not been changed
+ //
+ if (!HBufferImageNeedRefresh &&
+ !HBufferImageOnlyLineNeedRefresh &&
+ (HBufferImageBackupVar.LowVisibleRow == HBufferImage.LowVisibleRow)
+ )
+ {
+ HBufferImageRestoreMousePosition ();
+ HBufferImageRestorePosition ();
+ return EFI_SUCCESS;
+ }
+ }
+
+ gST->ConOut->EnableCursor (gST->ConOut, FALSE);
+
+ //
+ // only need to refresh current line
+ //
+ if (HBufferImageOnlyLineNeedRefresh && (HBufferImageBackupVar.LowVisibleRow == HBufferImage.LowVisibleRow)) {
+ HBufferImagePrintLine (
+ HBufferImage.CurrentLine,
+ HBufferImage.DisplayPosition.Row,
+ HBufferImage.BufferPosition.Row,
+ Orig,
+ New
+ );
+ } else {
+ //
+ // the whole edit area need refresh
+ //
+ if (HEditorMouseAction && (HMainEditor.SelectStart != 0) && (HMainEditor.SelectEnd != 0)) {
+ if (HMainEditor.SelectStart != HMainEditorBackupVar.SelectStart) {
+ if ((HMainEditor.SelectStart >= HMainEditorBackupVar.SelectStart) && (HMainEditorBackupVar.SelectStart != 0)) {
+ StartRow = (HMainEditorBackupVar.SelectStart - 1) / 0x10 + 1;
+ } else {
+ StartRow = (HMainEditor.SelectStart - 1) / 0x10 + 1;
+ }
+ } else {
+ StartRow = (HMainEditor.SelectStart - 1) / 0x10 + 1;
+ }
+
+ if (HMainEditor.SelectEnd <= HMainEditorBackupVar.SelectEnd) {
+ EndRow = (HMainEditorBackupVar.SelectEnd - 1) / 0x10 + 1;
+ } else {
+ EndRow = (HMainEditor.SelectEnd - 1) / 0x10 + 1;
+ }
+
+ //
+ // swap
+ //
+ if (StartRow > EndRow) {
+ Tmp = StartRow;
+ StartRow = EndRow;
+ EndRow = Tmp;
+ }
+
+ FStartRow = StartRow;
+
+ StartRow = 2 + StartRow - HBufferImage.LowVisibleRow;
+ EndRow = 2 + EndRow - HBufferImage.LowVisibleRow;
+ } else {
+ //
+ // not mouse selection actions
+ //
+ FStartRow = HBufferImage.LowVisibleRow;
+ StartRow = 2;
+ EndRow = (HMainEditor.ScreenSize.Row - 1);
+ }
+
+ //
+ // no line
+ //
+ if (HBufferImage.Lines == NULL) {
+ HBufferImageRestoreMousePosition ();
+ HBufferImageRestorePosition ();
+ gST->ConOut->EnableCursor (gST->ConOut, TRUE);
+ return EFI_SUCCESS;
+ }
+
+ //
+ // get the first line that will be displayed
+ //
+ Line = HMoveLine (FStartRow - HBufferImage.BufferPosition.Row);
+ if (Line == NULL) {
+ gST->ConOut->EnableCursor (gST->ConOut, TRUE);
+ return EFI_LOAD_ERROR;
+ }
+
+ Link = &(Line->Link);
+ Row = StartRow;
+ do {
+ Line = CR (Link, HEFI_EDITOR_LINE, Link, EFI_EDITOR_LINE_LIST);
+
+ //
+ // print line at row
+ //
+ HBufferImagePrintLine (
+ Line,
+ Row,
+ HBufferImage.LowVisibleRow + Row - 2,
+ Orig,
+ New
+ );
+
+ Link = Link->ForwardLink;
+ Row++;
+ } while (Link != HBufferImage.ListHead && Row <= EndRow);
+
+ while (Row <= EndRow) {
+ EditorClearLine (Row, HMainEditor.ScreenSize.Column, HMainEditor.ScreenSize.Row);
+ Row++;
+ }
+
+ //
+ // while not file end and not screen full
+ //
+ }
+
+ HBufferImageRestoreMousePosition ();
+ HBufferImageRestorePosition ();
+
+ HBufferImageNeedRefresh = FALSE;
+ HBufferImageOnlyLineNeedRefresh = FALSE;
+ gST->ConOut->EnableCursor (gST->ConOut, TRUE);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Read an image into a buffer friom a source.
+
+ @param[in] FileName Pointer to the file name. OPTIONAL and ignored if not FileTypeFileBuffer.
+ @param[in] DiskName Pointer to the disk name. OPTIONAL and ignored if not FileTypeDiskBuffer.
+ @param[in] DiskOffset Offset into the disk. OPTIONAL and ignored if not FileTypeDiskBuffer.
+ @param[in] DiskSize Size of the disk buffer. OPTIONAL and ignored if not FileTypeDiskBuffer.
+ @param[in] MemOffset Offset into the Memory. OPTIONAL and ignored if not FileTypeMemBuffer.
+ @param[in] MemSize Size of the Memory buffer. OPTIONAL and ignored if not FileTypeMemBuffer.
+ @param[in] BufferType The type of buffer to save. IGNORED.
+ @param[in] Recover TRUE for recovermode, FALSE otherwise.
+
+ @return EFI_SUCCESS The operation was successful.
+**/
+EFI_STATUS
+HBufferImageRead (
+ IN CONST CHAR16 *FileName,
+ IN CONST CHAR16 *DiskName,
+ IN UINTN DiskOffset,
+ IN UINTN DiskSize,
+ IN UINTN MemOffset,
+ IN UINTN MemSize,
+ IN EDIT_FILE_TYPE BufferType,
+ IN BOOLEAN Recover
+ )
+{
+ EFI_STATUS Status;
+ EDIT_FILE_TYPE BufferTypeBackup;
+
+ //
+ // variable initialization
+ //
+ Status = EFI_SUCCESS;
+ HBufferImage.BufferType = BufferType;
+
+ //
+ // three types of buffer supported
+ // file buffer
+ // disk buffer
+ // memory buffer
+ //
+ BufferTypeBackup = HBufferImage.BufferType;
+
+ switch (BufferType) {
+ case FileTypeFileBuffer:
+ Status = HFileImageRead (FileName, Recover);
+ break;
+
+ case FileTypeDiskBuffer:
+ Status = HDiskImageRead (DiskName, DiskOffset, DiskSize, Recover);
+ break;
+
+ case FileTypeMemBuffer:
+ Status = HMemImageRead (MemOffset, MemSize, Recover);
+ break;
+
+ default:
+ Status = EFI_NOT_FOUND;
+ break;
+ }
+
+ if (EFI_ERROR (Status)) {
+ HBufferImage.BufferType = BufferTypeBackup;
+ }
+
+ return Status;
+}
+
+/**
+ Save the current image.
+
+ @param[in] FileName Pointer to the file name. OPTIONAL and ignored if not FileTypeFileBuffer.
+ @param[in] DiskName Pointer to the disk name. OPTIONAL and ignored if not FileTypeDiskBuffer.
+ @param[in] DiskOffset Offset into the disk. OPTIONAL and ignored if not FileTypeDiskBuffer.
+ @param[in] DiskSize Size of the disk buffer. OPTIONAL and ignored if not FileTypeDiskBuffer.
+ @param[in] MemOffset Offset into the Memory. OPTIONAL and ignored if not FileTypeMemBuffer.
+ @param[in] MemSize Size of the Memory buffer. OPTIONAL and ignored if not FileTypeMemBuffer.
+ @param[in] BufferType The type of buffer to save. IGNORED.
+
+ @return EFI_SUCCESS The operation was successful.
+**/
+EFI_STATUS
+HBufferImageSave (
+ IN CHAR16 *FileName,
+ IN CHAR16 *DiskName,
+ IN UINTN DiskOffset,
+ IN UINTN DiskSize,
+ IN UINTN MemOffset,
+ IN UINTN MemSize,
+ IN EDIT_FILE_TYPE BufferType
+ )
+{
+ EFI_STATUS Status;
+ EDIT_FILE_TYPE BufferTypeBackup;
+
+ //
+ // variable initialization
+ //
+ Status = EFI_SUCCESS;
+ BufferTypeBackup = HBufferImage.BufferType;
+
+ switch (HBufferImage.BufferType) {
+ //
+ // file buffer
+ //
+ case FileTypeFileBuffer:
+ Status = HFileImageSave (FileName);
+ break;
+
+ //
+ // disk buffer
+ //
+ case FileTypeDiskBuffer:
+ Status = HDiskImageSave (DiskName, DiskOffset, DiskSize);
+ break;
+
+ //
+ // memory buffer
+ //
+ case FileTypeMemBuffer:
+ Status = HMemImageSave (MemOffset, MemSize);
+ break;
+
+ default:
+ Status = EFI_NOT_FOUND;
+ break;
+ }
+
+ if (EFI_ERROR (Status)) {
+ HBufferImage.BufferType = BufferTypeBackup;
+ }
+
+ return Status;
+}
+
+/**
+ Create a new line and append it to the line list.
+ Fields affected:
+ NumLines
+ Lines
+
+ @retval NULL create line failed.
+ @return the line created.
+
+**/
+HEFI_EDITOR_LINE *
+HBufferImageCreateLine (
+ VOID
+ )
+{
+ HEFI_EDITOR_LINE *Line;
+
+ //
+ // allocate for line structure
+ //
+ Line = AllocateZeroPool (sizeof (HEFI_EDITOR_LINE));
+ if (Line == NULL) {
+ return NULL;
+ }
+
+ Line->Signature = EFI_EDITOR_LINE_LIST;
+ Line->Size = 0;
+
+ HBufferImage.NumLines++;
+
+ //
+ // insert to line list
+ //
+ InsertTailList (HBufferImage.ListHead, &Line->Link);
+
+ if (HBufferImage.Lines == NULL) {
+ HBufferImage.Lines = CR (
+ HBufferImage.ListHead->ForwardLink,
+ HEFI_EDITOR_LINE,
+ Link,
+ EFI_EDITOR_LINE_LIST
+ );
+ }
+
+ return Line;
+}
+
+/**
+ Free the current image.
+
+ @retval EFI_SUCCESS The operation was successful.
+**/
+EFI_STATUS
+HBufferImageFree (
+ VOID
+ )
+{
+ //
+ // free all lines
+ //
+ HBufferImageFreeLines ();
+
+ return EFI_SUCCESS;
+}
+
+/**
+ change char to int value based on Hex.
+
+ @param[in] Char The input char.
+
+ @return The character's index value.
+ @retval -1 The operation failed.
+**/
+INTN
+HBufferImageCharToHex (
+ IN CHAR16 Char
+ )
+{
+ //
+ // change the character to hex
+ //
+ if ((Char >= L'0') && (Char <= L'9')) {
+ return (Char - L'0');
+ }
+
+ if ((Char >= L'a') && (Char <= L'f')) {
+ return (Char - L'a' + 10);
+ }
+
+ if ((Char >= L'A') && (Char <= L'F')) {
+ return (Char - L'A' + 10);
+ }
+
+ return -1;
+}
+
+/**
+ Add character.
+
+ @param[in] Char -- input char.
+
+ @retval EFI_SUCCESS The operation was successful.
+ @retval EFI_OUT_OF_RESOURCES A memory allocation failed.
+**/
+EFI_STATUS
+HBufferImageAddChar (
+ IN CHAR16 Char
+ )
+{
+ HEFI_EDITOR_LINE *Line;
+ HEFI_EDITOR_LINE *NewLine;
+ INTN Value;
+ UINT8 Old;
+ UINTN FRow;
+ UINTN FCol;
+ BOOLEAN High;
+
+ Value = HBufferImageCharToHex (Char);
+
+ //
+ // invalid input
+ //
+ if (Value == -1) {
+ return EFI_SUCCESS;
+ }
+
+ Line = HBufferImage.CurrentLine;
+ FRow = HBufferImage.BufferPosition.Row;
+ FCol = HBufferImage.BufferPosition.Column;
+ High = HBufferImage.HighBits;
+
+ //
+ // only needs to refresh current line
+ //
+ HBufferImageOnlyLineNeedRefresh = TRUE;
+
+ //
+ // not a full line and beyond the last character
+ //
+ if (FCol > Line->Size) {
+ //
+ // cursor always at high 4 bits
+ // and always put input to the low 4 bits
+ //
+ Line->Buffer[Line->Size] = (UINT8)Value;
+ Line->Size++;
+ High = FALSE;
+ } else {
+ Old = Line->Buffer[FCol - 1];
+
+ //
+ // always put the input to the low 4 bits
+ //
+ Old = (UINT8)(Old & 0x0f);
+ Old = (UINT8)(Old << 4);
+ Old = (UINT8)(Value + Old);
+ Line->Buffer[FCol - 1] = Old;
+
+ //
+ // at the low 4 bits of the last character of a full line
+ // so if no next line, need to create a new line
+ //
+ if (!High && (FCol == 0x10)) {
+ HBufferImageOnlyLineNeedRefresh = FALSE;
+ HBufferImageNeedRefresh = TRUE;
+
+ if (Line->Link.ForwardLink == HBufferImage.ListHead) {
+ //
+ // last line
+ //
+ // create a new line
+ //
+ NewLine = HBufferImageCreateLine ();
+ if (NewLine == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ //
+ // end of NULL
+ //
+ }
+
+ //
+ // end of == ListHead
+ //
+ }
+
+ //
+ // end of == 0x10
+ //
+ // if already at end of this line, scroll it to the start of next line
+ //
+ if ((FCol == 0x10) && !High) {
+ //
+ // definitely has next line
+ //
+ FRow++;
+ FCol = 1;
+ High = TRUE;
+ } else {
+ //
+ // if not at end of this line, just move to next column
+ //
+ if (!High) {
+ FCol++;
+ }
+
+ if (High) {
+ High = FALSE;
+ } else {
+ High = TRUE;
+ }
+ }
+
+ //
+ // end of ==FALSE
+ //
+ }
+
+ //
+ // move cursor to right
+ //
+ HBufferImageMovePosition (FRow, FCol, High);
+
+ if (!HBufferImage.Modified) {
+ HBufferImage.Modified = TRUE;
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Delete the previous character.
+
+ @retval EFI_SUCCESS The operationw as successful.
+**/
+EFI_STATUS
+HBufferImageDoBackspace (
+ VOID
+ )
+{
+ HEFI_EDITOR_LINE *Line;
+
+ UINTN FileColumn;
+ UINTN FPos;
+ BOOLEAN LastLine;
+
+ //
+ // variable initialization
+ //
+ LastLine = FALSE;
+
+ //
+ // already the first character
+ //
+ if ((HBufferImage.BufferPosition.Row == 1) && (HBufferImage.BufferPosition.Column == 1)) {
+ return EFI_SUCCESS;
+ }
+
+ FPos = (HBufferImage.BufferPosition.Row - 1) * 0x10 + HBufferImage.BufferPosition.Column - 1;
+
+ FileColumn = HBufferImage.BufferPosition.Column;
+
+ Line = HBufferImage.CurrentLine;
+ LastLine = FALSE;
+ if ((Line->Link.ForwardLink == HBufferImage.ListHead) && (FileColumn > 1)) {
+ LastLine = TRUE;
+ }
+
+ HBufferImageDeleteCharacterFromBuffer (FPos - 1, 1, NULL);
+
+ //
+ // if is the last line
+ // then only this line need to be refreshed
+ //
+ if (LastLine) {
+ HBufferImageNeedRefresh = FALSE;
+ HBufferImageOnlyLineNeedRefresh = TRUE;
+ } else {
+ HBufferImageNeedRefresh = TRUE;
+ HBufferImageOnlyLineNeedRefresh = FALSE;
+ }
+
+ if (!HBufferImage.Modified) {
+ HBufferImage.Modified = TRUE;
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ ASCII key + Backspace + return.
+
+ @param[in] Char The input char.
+
+ @retval EFI_SUCCESS The operation was successful.
+ @retval EFI_LOAD_ERROR A load error occurred.
+ @retval EFI_OUT_OF_RESOURCES A memory allocation failed.
+**/
+EFI_STATUS
+HBufferImageDoCharInput (
+ IN CHAR16 Char
+ )
+{
+ EFI_STATUS Status;
+
+ Status = EFI_SUCCESS;
+
+ switch (Char) {
+ case 0:
+ break;
+
+ case 0x08:
+ Status = HBufferImageDoBackspace ();
+ break;
+
+ case 0x09:
+ case 0x0a:
+ case 0x0d:
+ //
+ // Tabs, Returns are thought as nothing
+ //
+ break;
+
+ default:
+ //
+ // DEAL WITH ASCII CHAR, filter out thing like ctrl+f
+ //
+ if ((Char > 127) || (Char < 32)) {
+ Status = StatusBarSetStatusString (L"Unknown Command");
+ } else {
+ Status = HBufferImageAddChar (Char);
+ }
+
+ break;
+ }
+
+ return Status;
+}
+
+/**
+ Check user specified FileRow is above current screen.
+
+ @param[in] FileRow Row of file position ( start from 1 ).
+
+ @retval TRUE It is above the current screen.
+ @retval FALSE It is not above the current screen.
+
+**/
+BOOLEAN
+HAboveCurrentScreen (
+ IN UINTN FileRow
+ )
+{
+ if (FileRow < HBufferImage.LowVisibleRow) {
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+/**
+ Check user specified FileRow is under current screen.
+
+ @param[in] FileRow Row of file position ( start from 1 ).
+
+ @retval TRUE It is under the current screen.
+ @retval FALSE It is not under the current screen.
+
+**/
+BOOLEAN
+HUnderCurrentScreen (
+ IN UINTN FileRow
+ )
+{
+ if (FileRow > HBufferImage.LowVisibleRow + (HMainEditor.ScreenSize.Row - 2) - 1) {
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+/**
+ According to cursor's file position, adjust screen display.
+
+ @param[in] NewFilePosRow Row of file position ( start from 1 ).
+ @param[in] NewFilePosCol Column of file position ( start from 1 ).
+ @param[in] HighBits Cursor will on high4 bits or low4 bits.
+**/
+VOID
+HBufferImageMovePosition (
+ IN UINTN NewFilePosRow,
+ IN UINTN NewFilePosCol,
+ IN BOOLEAN HighBits
+ )
+{
+ INTN RowGap;
+ UINTN Abs;
+ BOOLEAN Above;
+ BOOLEAN Under;
+ UINTN NewDisplayCol;
+
+ //
+ // CALCULATE gap between current file position and new file position
+ //
+ RowGap = NewFilePosRow - HBufferImage.BufferPosition.Row;
+
+ Under = HUnderCurrentScreen (NewFilePosRow);
+ Above = HAboveCurrentScreen (NewFilePosRow);
+
+ HBufferImage.HighBits = HighBits;
+
+ //
+ // if is below current screen
+ //
+ if (Under) {
+ //
+ // display row will be unchanged
+ //
+ HBufferImage.BufferPosition.Row = NewFilePosRow;
+ } else {
+ if (Above) {
+ //
+ // has enough above line, so display row unchanged
+ // not has enough above lines, so the first line is
+ // at the first display line
+ //
+ if (NewFilePosRow < (HBufferImage.DisplayPosition.Row - 2 + 1)) {
+ HBufferImage.DisplayPosition.Row = NewFilePosRow + 2 - 1;
+ }
+
+ HBufferImage.BufferPosition.Row = NewFilePosRow;
+ } else {
+ //
+ // in current screen
+ //
+ HBufferImage.BufferPosition.Row = NewFilePosRow;
+ if (RowGap <= 0) {
+ Abs = (UINTN)ABS (RowGap);
+ HBufferImage.DisplayPosition.Row -= Abs;
+ } else {
+ HBufferImage.DisplayPosition.Row += RowGap;
+ }
+ }
+ }
+
+ HBufferImage.LowVisibleRow = HBufferImage.BufferPosition.Row - (HBufferImage.DisplayPosition.Row - 2);
+
+ //
+ // always in current screen
+ //
+ HBufferImage.BufferPosition.Column = NewFilePosCol;
+
+ NewDisplayCol = 10 + (NewFilePosCol - 1) * 3;
+ if (NewFilePosCol > 0x8) {
+ NewDisplayCol++;
+ }
+
+ if (!HighBits) {
+ NewDisplayCol++;
+ }
+
+ HBufferImage.DisplayPosition.Column = NewDisplayCol;
+
+ //
+ // let CurrentLine point to correct line;
+ //
+ HBufferImage.CurrentLine = HMoveCurrentLine (RowGap);
+}
+
+/**
+ Scroll cursor to right.
+
+ @retval EFI_SUCCESS The operation was successful.
+**/
+EFI_STATUS
+HBufferImageScrollRight (
+ VOID
+ )
+{
+ HEFI_EDITOR_LINE *Line;
+ UINTN FRow;
+ UINTN FCol;
+
+ //
+ // scroll right will always move to the high4 bits of the next character
+ //
+ HBufferImageNeedRefresh = FALSE;
+ HBufferImageOnlyLineNeedRefresh = FALSE;
+
+ Line = HBufferImage.CurrentLine;
+
+ FRow = HBufferImage.BufferPosition.Row;
+ FCol = HBufferImage.BufferPosition.Column;
+
+ //
+ // this line is not full and no next line
+ //
+ if (FCol > Line->Size) {
+ return EFI_SUCCESS;
+ }
+
+ //
+ // if already at end of this line, scroll it to the start of next line
+ //
+ if (FCol == 0x10) {
+ //
+ // has next line
+ //
+ if (Line->Link.ForwardLink != HBufferImage.ListHead) {
+ FRow++;
+ FCol = 1;
+ } else {
+ return EFI_SUCCESS;
+ }
+ } else {
+ //
+ // if not at end of this line, just move to next column
+ //
+ FCol++;
+ }
+
+ HBufferImageMovePosition (FRow, FCol, TRUE);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Scroll cursor to left.
+
+ @retval EFI_SUCCESS The operation was successful.
+**/
+EFI_STATUS
+HBufferImageScrollLeft (
+ VOID
+ )
+{
+ HEFI_EDITOR_LINE *Line;
+ UINTN FRow;
+ UINTN FCol;
+
+ HBufferImageNeedRefresh = FALSE;
+ HBufferImageOnlyLineNeedRefresh = FALSE;
+
+ Line = HBufferImage.CurrentLine;
+
+ FRow = HBufferImage.BufferPosition.Row;
+ FCol = HBufferImage.BufferPosition.Column;
+
+ //
+ // if already at start of this line, so move to the end of previous line
+ //
+ if (FCol <= 1) {
+ //
+ // has previous line
+ //
+ if (Line->Link.BackLink != HBufferImage.ListHead) {
+ FRow--;
+ Line = CR (Line->Link.BackLink, HEFI_EDITOR_LINE, Link, EFI_EDITOR_LINE_LIST);
+ FCol = Line->Size;
+ } else {
+ return EFI_SUCCESS;
+ }
+ } else {
+ //
+ // if not at start of this line, just move to previous column
+ //
+ FCol--;
+ }
+
+ HBufferImageMovePosition (FRow, FCol, TRUE);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Scroll cursor to the next line
+
+ @retval EFI_SUCCESS The operation was successful.
+**/
+EFI_STATUS
+HBufferImageScrollDown (
+ VOID
+ )
+{
+ HEFI_EDITOR_LINE *Line;
+ UINTN FRow;
+ UINTN FCol;
+ BOOLEAN HighBits;
+
+ Line = HBufferImage.CurrentLine;
+
+ FRow = HBufferImage.BufferPosition.Row;
+ FCol = HBufferImage.BufferPosition.Column;
+ HighBits = HBufferImage.HighBits;
+
+ //
+ // has next line
+ //
+ if (Line->Link.ForwardLink != HBufferImage.ListHead) {
+ FRow++;
+ Line = CR (Line->Link.ForwardLink, HEFI_EDITOR_LINE, Link, EFI_EDITOR_LINE_LIST);
+
+ //
+ // if the next line is not that long, so move to end of next line
+ //
+ if (FCol > Line->Size) {
+ FCol = Line->Size + 1;
+ HighBits = TRUE;
+ }
+ } else {
+ return EFI_SUCCESS;
+ }
+
+ HBufferImageMovePosition (FRow, FCol, HighBits);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Scroll cursor to previous line
+
+ @retval EFI_SUCCESS The operation was successful.
+**/
+EFI_STATUS
+HBufferImageScrollUp (
+ VOID
+ )
+{
+ HEFI_EDITOR_LINE *Line;
+ UINTN FRow;
+ UINTN FCol;
+
+ Line = HBufferImage.CurrentLine;
+
+ FRow = HBufferImage.BufferPosition.Row;
+ FCol = HBufferImage.BufferPosition.Column;
+
+ //
+ // has previous line
+ //
+ if (Line->Link.BackLink != HBufferImage.ListHead) {
+ FRow--;
+ } else {
+ return EFI_SUCCESS;
+ }
+
+ HBufferImageMovePosition (FRow, FCol, HBufferImage.HighBits);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Scroll cursor to next page
+
+ @retval EFI_SUCCESS The operation was successful.
+**/
+EFI_STATUS
+HBufferImagePageDown (
+ VOID
+ )
+{
+ HEFI_EDITOR_LINE *Line;
+ UINTN FRow;
+ UINTN FCol;
+ UINTN Gap;
+ BOOLEAN HighBits;
+
+ Line = HBufferImage.CurrentLine;
+
+ FRow = HBufferImage.BufferPosition.Row;
+ FCol = HBufferImage.BufferPosition.Column;
+ HighBits = HBufferImage.HighBits;
+
+ //
+ // has next page
+ //
+ if (HBufferImage.NumLines >= FRow + (HMainEditor.ScreenSize.Row - 2)) {
+ Gap = (HMainEditor.ScreenSize.Row - 2);
+ } else {
+ //
+ // MOVE CURSOR TO LAST LINE
+ //
+ Gap = HBufferImage.NumLines - FRow;
+ }
+
+ //
+ // get correct line
+ //
+ Line = HMoveLine (Gap);
+
+ //
+ // if that line, is not that long, so move to the end of that line
+ //
+ if ((Line != NULL) && (FCol > Line->Size)) {
+ FCol = Line->Size + 1;
+ HighBits = TRUE;
+ }
+
+ FRow += Gap;
+
+ HBufferImageMovePosition (FRow, FCol, HighBits);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Scroll cursor to previous page
+
+ @retval EFI_SUCCESS The operation was successful.
+**/
+EFI_STATUS
+HBufferImagePageUp (
+ VOID
+ )
+{
+ UINTN FRow;
+ UINTN FCol;
+ UINTN Gap;
+ INTN Retreat;
+
+ FRow = HBufferImage.BufferPosition.Row;
+ FCol = HBufferImage.BufferPosition.Column;
+
+ //
+ // has previous page
+ //
+ if (FRow > (HMainEditor.ScreenSize.Row - 2)) {
+ Gap = (HMainEditor.ScreenSize.Row - 2);
+ } else {
+ //
+ // the first line of file will displayed on the first line of screen
+ //
+ Gap = FRow - 1;
+ }
+
+ Retreat = Gap;
+ Retreat = -Retreat;
+
+ FRow -= Gap;
+
+ HBufferImageMovePosition (FRow, FCol, HBufferImage.HighBits);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Scroll cursor to start of line
+
+ @retval EFI_SUCCESS The operation was successful.
+**/
+EFI_STATUS
+HBufferImageHome (
+ VOID
+ )
+{
+ UINTN FRow;
+ UINTN FCol;
+ BOOLEAN HighBits;
+
+ //
+ // curosr will at the high bit
+ //
+ FRow = HBufferImage.BufferPosition.Row;
+ FCol = 1;
+ HighBits = TRUE;
+
+ //
+ // move cursor position
+ //
+ HBufferImageMovePosition (FRow, FCol, HighBits);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Scroll cursor to end of line.
+
+ @retval EFI_SUCCESS Teh operation was successful.
+**/
+EFI_STATUS
+HBufferImageEnd (
+ VOID
+ )
+{
+ HEFI_EDITOR_LINE *Line;
+ UINTN FRow;
+ UINTN FCol;
+ BOOLEAN HighBits;
+
+ //
+ // need refresh mouse
+ //
+ HBufferImageMouseNeedRefresh = TRUE;
+
+ Line = HBufferImage.CurrentLine;
+
+ FRow = HBufferImage.BufferPosition.Row;
+
+ if (Line->Size == 0x10) {
+ FCol = Line->Size;
+ HighBits = FALSE;
+ } else {
+ FCol = Line->Size + 1;
+ HighBits = TRUE;
+ }
+
+ //
+ // move cursor position
+ //
+ HBufferImageMovePosition (FRow, FCol, HighBits);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Get the size of the open buffer.
+
+ @retval The size in bytes.
+**/
+UINTN
+HBufferImageGetTotalSize (
+ VOID
+ )
+{
+ UINTN Size;
+
+ HEFI_EDITOR_LINE *Line;
+
+ //
+ // calculate the total size of whole line list's buffer
+ //
+ if (HBufferImage.Lines == NULL) {
+ return 0;
+ }
+
+ Line = CR (
+ HBufferImage.ListHead->BackLink,
+ HEFI_EDITOR_LINE,
+ Link,
+ EFI_EDITOR_LINE_LIST
+ );
+ //
+ // one line at most 0x10
+ //
+ Size = 0x10 * (HBufferImage.NumLines - 1) + Line->Size;
+
+ return Size;
+}
+
+/**
+ Delete character from buffer.
+
+ @param[in] Pos Position, Pos starting from 0.
+ @param[in] Count The Count of characters to delete.
+ @param[out] DeleteBuffer The DeleteBuffer.
+
+ @retval EFI_SUCCESS Success
+**/
+EFI_STATUS
+HBufferImageDeleteCharacterFromBuffer (
+ IN UINTN Pos,
+ IN UINTN Count,
+ OUT UINT8 *DeleteBuffer
+ )
+{
+ UINTN Index;
+
+ VOID *Buffer;
+ UINT8 *BufferPtr;
+ UINTN Size;
+
+ HEFI_EDITOR_LINE *Line;
+ LIST_ENTRY *Link;
+
+ UINTN OldFCol;
+ UINTN OldFRow;
+ UINTN OldPos;
+
+ UINTN NewPos;
+
+ EFI_STATUS Status;
+
+ Size = HBufferImageGetTotalSize ();
+
+ if (Size < Count) {
+ return EFI_LOAD_ERROR;
+ }
+
+ if (Size == 0) {
+ return EFI_SUCCESS;
+ }
+
+ //
+ // relocate all the HBufferImage fields
+ //
+ OldFRow = HBufferImage.BufferPosition.Row;
+ OldFCol = HBufferImage.BufferPosition.Column;
+ OldPos = (OldFRow - 1) * 0x10 + OldFCol - 1;
+
+ if (Pos > 0) {
+ //
+ // has character before it,
+ // so locate according to block's previous character
+ //
+ NewPos = Pos - 1;
+ } else {
+ //
+ // has no character before it,
+ // so locate according to block's next character
+ //
+ NewPos = 0;
+ }
+
+ HBufferImageMovePosition (NewPos / 0x10 + 1, NewPos % 0x10 + 1, TRUE);
+
+ Buffer = AllocateZeroPool (Size);
+ if (Buffer == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ HBufferImageListToBuffer (Buffer, Size);
+
+ BufferPtr = (UINT8 *)Buffer;
+
+ //
+ // pass deleted buffer out
+ //
+ if (DeleteBuffer != NULL) {
+ for (Index = 0; Index < Count; Index++) {
+ DeleteBuffer[Index] = BufferPtr[Pos + Index];
+ }
+ }
+
+ //
+ // delete the part from Pos
+ //
+ for (Index = Pos; Index < Size - Count; Index++) {
+ BufferPtr[Index] = BufferPtr[Index + Count];
+ }
+
+ Size -= Count;
+
+ HBufferImageFreeLines ();
+
+ Status = HBufferImageBufferToList (Buffer, Size);
+ FreePool (Buffer);
+
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ Link = HMainEditor.BufferImage->ListHead->ForwardLink;
+ for (Index = 0; Index < NewPos / 0x10; Index++) {
+ Link = Link->ForwardLink;
+ }
+
+ Line = CR (Link, HEFI_EDITOR_LINE, Link, EFI_EDITOR_LINE_LIST);
+ HBufferImage.CurrentLine = Line;
+
+ //
+ // if current cursor position if inside select area
+ // then move it to the block's NEXT character
+ //
+ if ((OldPos >= Pos) && (OldPos < (Pos + Count))) {
+ NewPos = Pos;
+ } else {
+ if (OldPos < Pos) {
+ NewPos = OldPos;
+ } else {
+ NewPos = OldPos - Count;
+ }
+ }
+
+ HBufferImageMovePosition (NewPos / 0x10 + 1, NewPos % 0x10 + 1, TRUE);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Add character to buffer, add before pos.
+
+ @param[in] Pos Position, Pos starting from 0.
+ @param[in] Count Count of characters to add.
+ @param[in] AddBuffer Add buffer.
+
+ @retval EFI_SUCCESS Success.
+**/
+EFI_STATUS
+HBufferImageAddCharacterToBuffer (
+ IN UINTN Pos,
+ IN UINTN Count,
+ IN UINT8 *AddBuffer
+ )
+{
+ INTN Index;
+
+ VOID *Buffer;
+ UINT8 *BufferPtr;
+ UINTN Size;
+
+ HEFI_EDITOR_LINE *Line;
+
+ LIST_ENTRY *Link;
+
+ UINTN OldFCol;
+ UINTN OldFRow;
+ UINTN OldPos;
+
+ UINTN NewPos;
+
+ Size = HBufferImageGetTotalSize ();
+
+ //
+ // relocate all the HBufferImage fields
+ //
+ OldFRow = HBufferImage.BufferPosition.Row;
+ OldFCol = HBufferImage.BufferPosition.Column;
+ OldPos = (OldFRow - 1) * 0x10 + OldFCol - 1;
+
+ //
+ // move cursor before Pos
+ //
+ if (Pos > 0) {
+ NewPos = Pos - 1;
+ } else {
+ NewPos = 0;
+ }
+
+ HBufferImageMovePosition (NewPos / 0x10 + 1, NewPos % 0x10 + 1, TRUE);
+
+ Buffer = AllocateZeroPool (Size + Count);
+ if (Buffer == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ HBufferImageListToBuffer (Buffer, Size);
+
+ BufferPtr = (UINT8 *)Buffer;
+
+ //
+ // get a place to add
+ //
+ for (Index = (INTN)(Size + Count - 1); Index >= (INTN)Pos; Index--) {
+ BufferPtr[Index] = BufferPtr[Index - Count];
+ }
+
+ //
+ // add the buffer
+ //
+ for (Index = (INTN)0; Index < (INTN)Count; Index++) {
+ BufferPtr[Index + Pos] = AddBuffer[Index];
+ }
+
+ Size += Count;
+
+ HBufferImageFreeLines ();
+
+ HBufferImageBufferToList (Buffer, Size);
+
+ FreePool (Buffer);
+
+ Link = HMainEditor.BufferImage->ListHead->ForwardLink;
+ for (Index = 0; Index < (INTN)NewPos / 0x10; Index++) {
+ Link = Link->ForwardLink;
+ }
+
+ Line = CR (Link, HEFI_EDITOR_LINE, Link, EFI_EDITOR_LINE_LIST);
+ HBufferImage.CurrentLine = Line;
+
+ if (OldPos >= Pos) {
+ NewPos = OldPos + Count;
+ } else {
+ NewPos = OldPos;
+ }
+
+ HBufferImageMovePosition (NewPos / 0x10 + 1, NewPos % 0x10 + 1, TRUE);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Delete current character from line.
+
+ @retval EFI_SUCCESS The operationw as successful.
+**/
+EFI_STATUS
+HBufferImageDoDelete (
+ VOID
+ )
+{
+ HEFI_EDITOR_LINE *Line;
+
+ BOOLEAN LastLine;
+ UINTN FileColumn;
+ UINTN FPos;
+
+ FPos = (HBufferImage.BufferPosition.Row - 1) * 0x10 + HBufferImage.BufferPosition.Column - 1;
+
+ FileColumn = HBufferImage.BufferPosition.Column;
+
+ Line = HBufferImage.CurrentLine;
+
+ //
+ // if beyond the last character
+ //
+ if (FileColumn > Line->Size) {
+ return EFI_SUCCESS;
+ }
+
+ LastLine = FALSE;
+ if (Line->Link.ForwardLink == HBufferImage.ListHead) {
+ LastLine = TRUE;
+ }
+
+ HBufferImageDeleteCharacterFromBuffer (FPos, 1, NULL);
+
+ //
+ // if is the last line
+ // then only this line need to be refreshed
+ //
+ if (LastLine) {
+ HBufferImageNeedRefresh = FALSE;
+ HBufferImageOnlyLineNeedRefresh = TRUE;
+ } else {
+ HBufferImageNeedRefresh = TRUE;
+ HBufferImageOnlyLineNeedRefresh = FALSE;
+ }
+
+ if (!HBufferImage.Modified) {
+ HBufferImage.Modified = TRUE;
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Change the raw buffer to a list of lines for the UI.
+
+ @param[in] Buffer The pointer to the buffer to fill.
+ @param[in] Bytes The size of the buffer in bytes.
+
+ @retval EFI_SUCCESS The operation was successful.
+ @retval EFI_OUT_OF_RESOURCES A memory allocation failed.
+**/
+EFI_STATUS
+HBufferImageBufferToList (
+ IN VOID *Buffer,
+ IN UINTN Bytes
+ )
+{
+ UINTN TempI;
+ UINTN TempJ;
+ UINTN Left;
+ HEFI_EDITOR_LINE *Line;
+ UINT8 *BufferPtr;
+
+ TempI = 0;
+ Left = 0;
+ BufferPtr = (UINT8 *)Buffer;
+
+ //
+ // parse file content line by line
+ //
+ while (TempI < Bytes) {
+ if (Bytes - TempI >= 0x10) {
+ Left = 0x10;
+ } else {
+ Left = Bytes - TempI;
+ }
+
+ //
+ // allocate a new line
+ //
+ Line = HBufferImageCreateLine ();
+ if (Line == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ Line->Size = Left;
+
+ for (TempJ = 0; TempJ < Left; TempJ++) {
+ Line->Buffer[TempJ] = BufferPtr[TempI];
+ TempI++;
+ }
+ }
+
+ //
+ // last line is a full line, SO create a new line
+ //
+ if ((Left == 0x10) || (Bytes == 0)) {
+ Line = HBufferImageCreateLine ();
+ if (Line == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Change the list of lines from the UI to a raw buffer.
+
+ @param[in] Buffer The pointer to the buffer to fill.
+ @param[in] Bytes The size of the buffer in bytes.
+
+ @retval EFI_SUCCESS The operation was successful.
+**/
+EFI_STATUS
+HBufferImageListToBuffer (
+ IN VOID *Buffer,
+ IN UINTN Bytes
+ )
+{
+ UINTN Count;
+ UINTN Index;
+ HEFI_EDITOR_LINE *Line;
+ LIST_ENTRY *Link;
+ UINT8 *BufferPtr;
+
+ //
+ // change the line list to a large buffer
+ //
+ if (HBufferImage.Lines == NULL) {
+ return EFI_SUCCESS;
+ }
+
+ Link = &HBufferImage.Lines->Link;
+ Count = 0;
+ BufferPtr = (UINT8 *)Buffer;
+
+ //
+ // deal line by line
+ //
+ while (Link != HBufferImage.ListHead) {
+ Line = CR (Link, HEFI_EDITOR_LINE, Link, EFI_EDITOR_LINE_LIST);
+
+ // @todo shouldn't this be an error???
+ if (Count + Line->Size > Bytes) {
+ return EFI_SUCCESS;
+ }
+
+ for (Index = 0; Index < Line->Size; Index++) {
+ BufferPtr[Index] = Line->Buffer[Index];
+ }
+
+ Count += Line->Size;
+ BufferPtr += Line->Size;
+
+ Link = Link->ForwardLink;
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Move the mouse in the image buffer.
+
+ @param[in] TextX The x-coordinate.
+ @param[in] TextY The y-coordinate.
+**/
+VOID
+HBufferImageAdjustMousePosition (
+ IN INT32 TextX,
+ IN INT32 TextY
+ )
+{
+ UINTN TempX;
+ UINTN TempY;
+ UINTN AbsX;
+ UINTN AbsY;
+
+ //
+ // TextX and TextY is mouse movement data returned by mouse driver
+ // This function will change it to MousePosition
+ //
+ //
+ // get absolute TempX value
+ //
+ if (TextX >= 0) {
+ AbsX = TextX;
+ } else {
+ AbsX = -TextX;
+ }
+
+ //
+ // get absolute TempY value
+ //
+ if (TextY >= 0) {
+ AbsY = TextY;
+ } else {
+ AbsY = -TextY;
+ }
+
+ TempX = HBufferImage.MousePosition.Column;
+ TempY = HBufferImage.MousePosition.Row;
+
+ if (TextX >= 0) {
+ TempX += TextX;
+ } else {
+ if (TempX >= AbsX) {
+ TempX -= AbsX;
+ } else {
+ TempX = 0;
+ }
+ }
+
+ if (TextY >= 0) {
+ TempY += TextY;
+ } else {
+ if (TempY >= AbsY) {
+ TempY -= AbsY;
+ } else {
+ TempY = 0;
+ }
+ }
+
+ //
+ // check whether new mouse column position is beyond screen
+ // if not, adjust it
+ //
+ if ((TempX >= 10) && (TempX <= (10 + 0x10 * 3 - 1))) {
+ HBufferImage.MousePosition.Column = TempX;
+ } else if (TempX < 10) {
+ HBufferImage.MousePosition.Column = 10;
+ } else if (TempX > (10 + 0x10 * 3 - 1)) {
+ HBufferImage.MousePosition.Column = 10 + 0x10 * 3 - 1;
+ }
+
+ //
+ // check whether new mouse row position is beyond screen
+ // if not, adjust it
+ //
+ if ((TempY >= 2) && (TempY <= (HMainEditor.ScreenSize.Row - 1))) {
+ HBufferImage.MousePosition.Row = TempY;
+ } else if (TempY < 2) {
+ HBufferImage.MousePosition.Row = 2;
+ } else if (TempY > (HMainEditor.ScreenSize.Row - 1)) {
+ HBufferImage.MousePosition.Row = (HMainEditor.ScreenSize.Row - 1);
+ }
+}
+
+/**
+ Dispatch input to different handler
+
+ @param[in] Key The input key:
+ the keys can be:
+ ASCII KEY
+ Backspace/Delete
+ Direction key: up/down/left/right/pgup/pgdn
+ Home/End
+ INS
+
+ @retval EFI_SUCCESS The operation was successful.
+ @retval EFI_LOAD_ERROR A load error occurred.
+ @retval EFI_OUT_OF_RESOURCES A Memory allocation failed.
+**/
+EFI_STATUS
+HBufferImageHandleInput (
+ IN EFI_INPUT_KEY *Key
+ )
+{
+ EFI_STATUS Status;
+
+ Status = EFI_SUCCESS;
+
+ switch (Key->ScanCode) {
+ //
+ // ordinary key
+ //
+ case SCAN_NULL:
+ Status = HBufferImageDoCharInput (Key->UnicodeChar);
+ break;
+
+ //
+ // up arrow
+ //
+ case SCAN_UP:
+ Status = HBufferImageScrollUp ();
+ break;
+
+ //
+ // down arrow
+ //
+ case SCAN_DOWN:
+ Status = HBufferImageScrollDown ();
+ break;
+
+ //
+ // right arrow
+ //
+ case SCAN_RIGHT:
+ Status = HBufferImageScrollRight ();
+ break;
+
+ //
+ // left arrow
+ //
+ case SCAN_LEFT:
+ Status = HBufferImageScrollLeft ();
+ break;
+
+ //
+ // page up
+ //
+ case SCAN_PAGE_UP:
+ Status = HBufferImagePageUp ();
+ break;
+
+ //
+ // page down
+ //
+ case SCAN_PAGE_DOWN:
+ Status = HBufferImagePageDown ();
+ break;
+
+ //
+ // delete
+ //
+ case SCAN_DELETE:
+ Status = HBufferImageDoDelete ();
+ break;
+
+ //
+ // home
+ //
+ case SCAN_HOME:
+ Status = HBufferImageHome ();
+ break;
+
+ //
+ // end
+ //
+ case SCAN_END:
+ Status = HBufferImageEnd ();
+ break;
+
+ default:
+ Status = StatusBarSetStatusString (L"Unknown Command");
+ break;
+ }
+
+ return Status;
+}
generated by cgit v1.2.3 (git 2.39.0) at 2026-09-09 06:40:01 +0300