diff options
| author | jcarsey <jcarsey@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-03-25 21:15:07 +0000 |
|---|---|---|
| committer | jcarsey <jcarsey@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-03-25 21:15:07 +0000 |
| commit | 632820d1cf1ce7a18ef354255eaeae6fdbf383b9 (patch) | |
| tree | 4bae0e4268fdf79eb2f3aa8035b413c95cb28f10 /ShellPkg/Library/UefiShellDebug1CommandsLib/HexEdit/BufferImage.c | |
| parent | 5a0fe66eda4a187724b0eb9d660ab21296178af5 (diff) | |
| download | edk2-632820d1cf1ce7a18ef354255eaeae6fdbf383b9.tar.gz edk2-632820d1cf1ce7a18ef354255eaeae6fdbf383b9.tar.bz2 edk2-632820d1cf1ce7a18ef354255eaeae6fdbf383b9.zip | |
add Edit and HexEdit commands.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11436 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ShellPkg/Library/UefiShellDebug1CommandsLib/HexEdit/BufferImage.c')
| -rw-r--r-- | ShellPkg/Library/UefiShellDebug1CommandsLib/HexEdit/BufferImage.c | 2695 |
1 files changed, 2695 insertions, 0 deletions
diff --git a/ShellPkg/Library/UefiShellDebug1CommandsLib/HexEdit/BufferImage.c b/ShellPkg/Library/UefiShellDebug1CommandsLib/HexEdit/BufferImage.c new file mode 100644 index 0000000000..04ebd24edc --- /dev/null +++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/HexEdit/BufferImage.c @@ -0,0 +1,2695 @@ +/** @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 - 2011, Intel Corporation. All rights reserved. <BR>
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#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;
+
+EFI_STATUS
+HBufferImageInit (
+ VOID
+ )
+/*++
+
+Routine Description:
+
+ Initialization function for HBufferImage
+
+Arguments:
+
+ None
+
+Returns:
+
+ EFI_SUCCESS
+ EFI_LOAD_ERROR
+
+--*/
+{
+ 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;
+}
+
+EFI_STATUS
+HBufferImageBackup (
+ VOID
+ )
+/*++
+
+Routine Description:
+
+ Backup function for HBufferImage
+ Only a few fields need to be backup.
+ This is for making the file buffer refresh
+ as few as possible.
+
+Arguments:
+
+ None
+
+Returns:
+
+ EFI_SUCCESS
+
+--*/
+{
+ 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;
+ }
+
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+HBufferImageFreeLines (
+ VOID
+ )
+/*++
+
+Routine Description:
+
+ Free all the lines in HBufferImage
+ Fields affected:
+ Lines
+ CurrentLine
+ NumLines
+ ListHead
+
+Arguments:
+
+ None
+
+Returns:
+
+ EFI_SUCCESS
+
+--*/
+{
+ HFreeLines (HBufferImage.ListHead, HBufferImage.Lines);
+
+ HBufferImage.Lines = NULL;
+ HBufferImage.CurrentLine = NULL;
+ HBufferImage.NumLines = 0;
+
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+HBufferImageCleanup (
+ VOID
+ )
+/*++
+
+Routine Description:
+
+ Cleanup function for HBufferImage
+
+Arguments:
+
+ None
+
+Returns:
+
+ EFI_SUCCESS
+
+--*/
+{
+ EFI_STATUS Status;
+
+ //
+ // free all the lines
+ //
+ Status = HBufferImageFreeLines ();
+
+ SHELL_FREE_NON_NULL (HBufferImage.ListHead);
+ HBufferImage.ListHead = NULL;
+
+ HFileImageCleanup ();
+ HDiskImageCleanup ();
+ HMemImageCleanup ();
+
+ return Status;
+
+}
+
+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
+
+ )
+/*++
+
+Routine Description:
+
+ Print Line on Row
+
+Arguments:
+
+ Line - Line to print
+ Row - Row on screen ( begin from 1 )
+ FRow - FRow
+ Orig - Orig
+ New - Light display
+
+Returns:
+
+ EFI_SUCCESS
+
+--*/
+{
+
+ 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 == FALSE) {
+ 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);
+ } else {
+ gST->ConOut->SetAttribute (gST->ConOut, Orig.Data);
+ }
+
+ 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);
+ 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);
+ } else {
+ gST->ConOut->SetAttribute (gST->ConOut, Orig.Data);
+ }
+
+ 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);
+ 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);
+
+ //
+ // PRINT the buffer content
+ //
+ if (HEditorMouseAction == FALSE) {
+ 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;
+}
+
+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)) {
+ return TRUE;
+ }
+
+ if ((Column % 3 == 2)) {
+ *FCol = 0;
+ }
+
+ return FALSE;
+}
+
+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;
+}
+
+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.Colors.Foreground = Orig.Colors.Background;
+ New.Colors.Background = Orig.Colors.Foreground;
+
+ //
+ // 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);
+ }
+ //
+ // 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 (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);
+ } 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 (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;
+}
+
+EFI_STATUS
+HBufferImageRestorePosition (
+ VOID
+ )
+/*++
+
+Routine Description:
+
+ Set cursor position according to HBufferImage.DisplayPosition.
+
+Arguments:
+
+ None
+
+Returns:
+
+ EFI_SUCCESS
+
+--*/
+{
+ //
+ // set cursor position
+ //
+ gST->ConOut->SetCursorPosition (
+ gST->ConOut,
+ HBufferImage.DisplayPosition.Column - 1,
+ HBufferImage.DisplayPosition.Row - 1
+ );
+
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+HBufferImageRefresh (
+ VOID
+ )
+/*++
+
+Routine Description:
+
+ Refresh function for HBufferImage
+
+Arguments:
+
+ None
+
+Returns:
+
+ EFI_SUCCESS
+ EFI_LOAD_ERROR
+
+--*/
+{
+ 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 FEndRow;
+ UINTN Tmp;
+
+ Orig = HMainEditor.ColorAttributes;
+ 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 == FALSE &&
+ HBufferImageOnlyLineNeedRefresh == FALSE &&
+ HBufferImageBackupVar.LowVisibleRow == HBufferImage.LowVisibleRow
+ ) {
+ HBufferImageRestoreMousePosition ();
+ HBufferImageRestorePosition ();
+ return EFI_SUCCESS;
+ }
+ }
+
+ gST->ConOut->EnableCursor (gST->ConOut, FALSE);
+
+ //
+ // only need to refresh current line
+ //
+ if (HBufferImageOnlyLineNeedRefresh == TRUE && 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;
+ FEndRow = EndRow;
+
+ StartRow = 2 + StartRow - HBufferImage.LowVisibleRow;
+ EndRow = 2 + EndRow - HBufferImage.LowVisibleRow;
+
+ } else {
+ //
+ // not mouse selection actions
+ //
+ FStartRow = HBufferImage.LowVisibleRow;
+ StartRow = 2;
+ EndRow = (HMainEditor.ScreenSize.Row - 4);
+ }
+ //
+ // 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) {
+ HEditorClearLine (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;
+}
+
+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;
+
+ //
+ // 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;
+ }
+
+ if (EFI_ERROR (Status)) {
+ HBufferImage.BufferType = BufferTypeBackup;
+ }
+
+ return Status;
+}
+
+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;
+ }
+
+ if (EFI_ERROR (Status)) {
+ HBufferImage.BufferType = BufferTypeBackup;
+ }
+
+ return Status;
+}
+
+HEFI_EDITOR_LINE *
+HBufferImageCreateLine (
+ VOID
+ )
+/*++
+
+Routine Description:
+
+ Create a new line and append it to the line list
+ Fields affected:
+ NumLines
+ Lines
+
+Arguments:
+
+ None
+
+Returns:
+
+ NULL -- create line failed
+ Not NULL -- the line created
+
+--*/
+{
+ 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;
+}
+
+EFI_STATUS
+HBufferImageFree (
+ VOID
+ )
+/*++
+
+Routine Description:
+
+ Function called when load a new file in. It will free all the old lines
+ and set FileModified field to FALSE
+
+Arguments:
+
+ None
+
+Returns:
+
+ EFI_SUCCESS
+
+--*/
+{
+ //
+ // free all lines
+ //
+ HBufferImageFreeLines ();
+
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+HBufferImageHandleInput (
+ IN EFI_INPUT_KEY *Key
+ )
+/*++
+
+Routine Description:
+
+ Dispatch input to different handler
+
+Arguments:
+
+ Key -- input key
+ the keys can be:
+ ASCII KEY
+ Backspace/Delete
+ Direction key: up/down/left/right/pgup/pgdn
+ Home/End
+ INS
+
+Returns:
+
+ EFI_SUCCESS
+ EFI_LOAD_ERROR
+ EFI_OUT_OF_RESOURCES
+
+--*/
+{
+ 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;
+}
+
+EFI_STATUS
+HBufferImageDoCharInput (
+ IN CHAR16 Char
+ )
+/*++
+
+Routine Description:
+
+ ASCII key + Backspace + return
+
+Arguments:
+
+ Char -- input char
+
+Returns:
+
+ EFI_SUCCESS
+ EFI_LOAD_ERROR
+ EFI_OUT_OF_RESOURCES
+
+--*/
+{
+ 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;
+}
+
+INTN
+HBufferImageCharToHex (
+ IN CHAR16 Char
+ )
+/*++
+
+Routine Description:
+
+ change char to int value based on Hex
+
+Arguments:
+
+ Char -- input char
+
+Returns:
+
+ int value;
+
+
+--*/
+{
+ //
+ // change the character to hex
+ //
+ if (Char >= L'0' && Char <= L'9') {
+ return (INTN) (Char - L'0');
+ }
+
+ if (Char >= L'a' && Char <= L'f') {
+ return (INTN) (Char - L'a' + 10);
+ }
+
+ if (Char >= L'A' && Char <= L'F') {
+ return (INTN) (Char - L'A' + 10);
+ }
+
+ return -1;
+}
+
+EFI_STATUS
+HBufferImageAddChar (
+ IN CHAR16 Char
+ )
+/*++
+
+Routine Description:
+
+ Add character
+
+Arguments:
+
+ Char -- input char
+
+Returns:
+
+ EFI_SUCCESS
+ EFI_OUT_OF_RESOURCES
+
+--*/
+{
+ 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 == FALSE && 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 == FALSE) {
+ //
+ // 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;
+}
+
+BOOLEAN
+HInCurrentScreen (
+ IN UINTN FileRow
+ )
+/*++
+
+Routine Description:
+
+ Check user specified FileRow and FileCol is in current screen
+
+Arguments:
+
+ FileRow -- Row of file position ( start from 1 )
+
+
+Returns:
+
+ TRUE
+ FALSE
+
+--*/
+{
+ if (FileRow >= HBufferImage.LowVisibleRow && FileRow <= HBufferImage.LowVisibleRow + (HMainEditor.ScreenSize.Row - 5) - 1) {
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+BOOLEAN
+HAboveCurrentScreen (
+ IN UINTN FileRow
+ )
+/*++
+
+Routine Description:
+
+ Check user specified FileRow is above current screen
+
+Arguments:
+
+ FileRow -- Row of file position ( start from 1 )
+
+Returns:
+
+ TRUE
+ FALSE
+
+--*/
+{
+ if (FileRow < HBufferImage.LowVisibleRow) {
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+BOOLEAN
+HUnderCurrentScreen (
+ IN UINTN FileRow
+ )
+/*++
+
+Routine Description:
+
+ Check user specified FileRow is under current screen
+
+Arguments:
+
+ FileRow -- Row of file position ( start from 1 )
+
+Returns:
+
+ TRUE
+ FALSE
+
+--*/
+{
+ if (FileRow > HBufferImage.LowVisibleRow + (HMainEditor.ScreenSize.Row - 5) - 1) {
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+VOID
+HBufferImageMovePosition (
+ IN UINTN NewFilePosRow,
+ IN UINTN NewFilePosCol,
+ IN BOOLEAN HighBits
+ )
+/*++
+
+Routine Description:
+
+ According to cursor's file position, adjust screen display
+
+Arguments:
+
+ NewFilePosRow -- Row of file position ( start from 1 )
+ NewFilePosCol -- Column of file position ( start from 1 )
+ HighBits -- cursor will on high4 bits or low4 bits
+
+Returns:
+
+ None
+
+--*/
+{
+ 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 = -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 == FALSE) {
+ NewDisplayCol++;
+ }
+
+ HBufferImage.DisplayPosition.Column = NewDisplayCol;
+
+ //
+ // let CurrentLine point to correct line;
+ //
+ HBufferImage.CurrentLine = HMoveCurrentLine (RowGap);
+
+}
+
+EFI_STATUS
+HBufferImageScrollRight (
+ VOID
+ )
+/*++
+
+Routine Description:
+
+ Scroll cursor to right
+
+Arguments:
+
+ None
+
+Returns:
+
+ EFI_SUCCESS
+
+--*/
+{
+ 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;
+}
+
+EFI_STATUS
+HBufferImageScrollLeft (
+ VOID
+ )
+/*++
+
+Routine Description:
+
+ Scroll cursor to left
+
+Arguments:
+
+ None
+
+Returns:
+
+ EFI_SUCCESS
+
+--*/
+{
+
+ 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;
+}
+
+EFI_STATUS
+HBufferImageScrollDown (
+ VOID
+ )
+/*++
+
+Routine Description:
+
+ Scroll cursor to the next line
+
+Arguments:
+
+ None
+
+Returns:
+
+ EFI_SUCCESS
+
+--*/
+{
+ 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;
+}
+
+EFI_STATUS
+HBufferImageScrollUp (
+ VOID
+ )
+/*++
+
+Routine Description:
+
+ Scroll cursor to previous line
+
+Arguments:
+
+ None
+
+Returns:
+
+ EFI_SUCCESS
+
+--*/
+{
+ 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;
+}
+
+EFI_STATUS
+HBufferImagePageDown (
+ VOID
+ )
+/*++
+
+Routine Description:
+
+ Scroll cursor to next page
+
+Arguments:
+
+ None
+
+Returns:
+
+ EFI_SUCCESS
+
+--*/
+{
+ 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 - 5)) {
+ Gap = (HMainEditor.ScreenSize.Row - 5);
+ } 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 (FCol > Line->Size) {
+ FCol = Line->Size + 1;
+ HighBits = TRUE;
+ }
+
+ FRow += Gap;
+
+ HBufferImageMovePosition (FRow, FCol, HighBits);
+
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+HBufferImagePageUp (
+ VOID
+ )
+/*++
+
+Routine Description:
+
+ Scroll cursor to previous page
+
+Arguments:
+
+ None
+
+Returns:
+
+ EFI_SUCCESS
+
+--*/
+{
+ HEFI_EDITOR_LINE *Line;
+ UINTN FRow;
+ UINTN FCol;
+ UINTN Gap;
+ INTN Retreat;
+
+ Line = HBufferImage.CurrentLine;
+
+ FRow = HBufferImage.BufferPosition.Row;
+ FCol = HBufferImage.BufferPosition.Column;
+
+ //
+ // has previous page
+ //
+ if (FRow > (HMainEditor.ScreenSize.Row - 5)) {
+ Gap = (HMainEditor.ScreenSize.Row - 5);
+ } else {
+ //
+ // the first line of file will displayed on the first line of screen
+ //
+ Gap = FRow - 1;
+ }
+
+ Retreat = Gap;
+ Retreat = -Retreat;
+
+ //
+ // get correct line
+ //
+ Line = HMoveLine (Retreat);
+
+ FRow -= Gap;
+
+ HBufferImageMovePosition (FRow, FCol, HBufferImage.HighBits);
+
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+HBufferImageHome (
+ VOID
+ )
+/*++
+
+Routine Description:
+
+ Scroll cursor to start of line
+
+Arguments:
+
+ None
+
+Returns:
+
+ EFI_SUCCESS
+
+--*/
+{
+ HEFI_EDITOR_LINE *Line;
+ UINTN FRow;
+ UINTN FCol;
+ BOOLEAN HighBits;
+
+ Line = HBufferImage.CurrentLine;
+
+ //
+ // curosr will at the high bit
+ //
+ FRow = HBufferImage.BufferPosition.Row;
+ FCol = 1;
+ HighBits = TRUE;
+
+ //
+ // move cursor position
+ //
+ HBufferImageMovePosition (FRow, FCol, HighBits);
+
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+HBufferImageEnd (
+ VOID
+ )
+/*++
+
+Routine Description:
+
+ Scroll cursor to end of line
+
+Arguments:
+
+ None
+
+Returns:
+
+ EFI_SUCCESS
+
+--*/
+{
+ 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;
+}
+
+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;
+}
+
+EFI_STATUS
+HBufferImageDeleteCharacterFromBuffer (
+ IN UINTN Pos,
+ IN UINTN Count,
+ OUT UINT8 *DeleteBuffer
+ )
+/*++
+Routine Description:
+
+ Delete character from buffer
+
+Arguments:
+
+ Pos - Position, Pos starting from 0
+ Count - Count
+ DeleteBuffer - DeleteBuffer
+
+Returns:
+
+ EFI_SUCCESS Success
+
+--*/
+{
+ UINTN Index;
+
+ VOID *Buffer;
+ UINT8 *BufferPtr;
+ UINTN Size;
+
+ HEFI_EDITOR_LINE *Line;
+ LIST_ENTRY *Link;
+ UINTN StartRow;
+
+ UINTN OldFCol;
+ UINTN OldFRow;
+ UINTN OldPos;
+
+ UINTN NewPos;
+
+ EFI_STATUS Status;
+
+ //
+ // get the line that start position is at
+ //
+ StartRow = Pos / 0x10;
+
+ 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;
+}
+
+EFI_STATUS
+HBufferImageAddCharacterToBuffer (
+ IN UINTN Pos,
+ IN UINTN Count,
+ IN UINT8 *AddBuffer
+ )
+/*++'
+Routine Description:
+
+ Add character to buffer, add before pos
+
+Arguments:
+
+ Pos - Position, Pos starting from 0
+ Count - Count
+ AddBuffer - Add buffer
+
+Returns:
+
+ EFI_SUCCESS Success
+
+--*/
+{
+ INTN Index;
+
+ VOID *Buffer;
+ UINT8 *BufferPtr;
+ UINTN Size;
+
+ HEFI_EDITOR_LINE *Line;
+
+ LIST_ENTRY *Link;
+ UINTN StartRow;
+
+ UINTN OldFCol;
+ UINTN OldFRow;
+ UINTN OldPos;
+
+ UINTN NewPos;
+
+ //
+ // get the line that start position is at
+ //
+ StartRow = Pos / 0x10;
+
+ 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;
+}
+
+EFI_STATUS
+HBufferImageDoBackspace (
+ VOID
+ )
+/*++
+
+Routine Description:
+
+ delete the previous character
+
+Arguments:
+
+ None
+
+Returns:
+
+ EFI_SUCCESS
+
+--*/
+{
+ 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;
+}
+
+EFI_STATUS
+HBufferImageDoDelete (
+ VOID
+ )
+/*++
+
+Routine Description:
+
+ Delete current character from line
+
+Arguments:
+
+ None
+
+Returns:
+
+ EFI_SUCCESS
+
+--*/
+{
+
+ 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;
+}
+
+EFI_STATUS
+HBufferImageBufferToList (
+ IN VOID *Buffer,
+ IN UINTN Bytes
+ )
+{
+ UINTN i;
+ UINTN j;
+ UINTN Left;
+ HEFI_EDITOR_LINE *Line;
+ UINT8 *BufferPtr;
+
+ i = 0;
+ Left = 0;
+ BufferPtr = (UINT8 *) Buffer;
+
+ //
+ // parse file content line by line
+ //
+ while (i < Bytes) {
+ if (Bytes - i >= 0x10) {
+ Left = 0x10;
+ } else {
+ Left = Bytes - i;
+ }
+
+ //
+ // allocate a new line
+ //
+ Line = HBufferImageCreateLine ();
+ if (Line == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ Line->Size = Left;
+
+ for (j = 0; j < Left; j++) {
+ Line->Buffer[j] = BufferPtr[i];
+ i++;
+ }
+
+ }
+
+ //
+ // 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;
+}
+
+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);
+
+ 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;
+}
+
+VOID
+HBufferImageAdjustMousePosition (
+ IN INT32 TextX,
+ IN INT32 TextY
+ )
+{
+ UINTN X;
+ UINTN Y;
+ UINTN AbsX;
+ UINTN AbsY;
+
+ //
+ // TextX and TextY is mouse movement data returned by mouse driver
+ // This function will change it to MousePosition
+ //
+ //
+ // get absolute X value
+ //
+ if (TextX >= 0) {
+ AbsX = TextX;
+ } else {
+ AbsX = -TextX;
+ }
+ //
+ // get absolute Y value
+ //
+ if (TextY >= 0) {
+ AbsY = TextY;
+ } else {
+ AbsY = -TextY;
+ }
+
+ X = HBufferImage.MousePosition.Column;
+ Y = HBufferImage.MousePosition.Row;
+
+ if (TextX >= 0) {
+ X += TextX;
+ } else {
+ if (X >= AbsX) {
+ X -= AbsX;
+ } else {
+ X = 0;
+ }
+ }
+
+ if (TextY >= 0) {
+ Y += TextY;
+ } else {
+ if (Y >= AbsY) {
+ Y -= AbsY;
+ } else {
+ Y = 0;
+ }
+ }
+ //
+ // check whether new mouse column position is beyond screen
+ // if not, adjust it
+ //
+ if (X >= 10 && X <= (10 + 0x10 * 3 - 1)) {
+ HBufferImage.MousePosition.Column = X;
+ } else if (X < 10) {
+ HBufferImage.MousePosition.Column = 10;
+ } else if (X > (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 (Y >= 2 && Y <= (HMainEditor.ScreenSize.Row - 4)) {
+ HBufferImage.MousePosition.Row = Y;
+ } else if (Y < 2) {
+ HBufferImage.MousePosition.Row = 2;
+ } else if (Y > (HMainEditor.ScreenSize.Row - 4)) {
+ HBufferImage.MousePosition.Row = (HMainEditor.ScreenSize.Row - 4);
+ }
+
+}
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