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- /** @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;
- }
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