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760 lines
17 KiB
760 lines
17 KiB
/*++
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Copyright (c) 1999 Intel Corporation
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Module Name:
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libFileBuffer.c
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--*/
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#ifndef _LIB_FILE_BUFFER
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#define _LIB_FILE_BUFFER
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#include "libMisc.h"
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#define ABSOLUTE_MAX_COLUMNS 132
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STATIC CHAR16 BlankLine[ABSOLUTE_MAX_COLUMNS];
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STATIC EFI_STATUS FileBufferScrollUp (VOID);
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STATIC EFI_STATUS FileBufferScrollDown (VOID);
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STATIC EFI_STATUS FileBufferScrollLeft (VOID);
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STATIC EFI_STATUS FileBufferScrollRight (VOID);
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STATIC EFI_STATUS FileBufferPageUp (VOID);
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STATIC EFI_STATUS FileBufferPageDown (VOID);
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STATIC EFI_STATUS FileBufferHome (VOID);
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STATIC EFI_STATUS FileBufferEnd (VOID);
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STATIC EFI_STATUS FileBufferDoDelete (VOID);
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STATIC EFI_STATUS FileBufferDoBackspace (VOID);
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STATIC EFI_STATUS FileBufferDoHexInput (CHAR16);
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STATIC EFI_STATUS FileBufferRefreshCurrentLine(VOID);
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STATIC EFI_STATUS FileBufferRefreshDown (VOID);
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STATIC EFI_STATUS FileBufferInit (VOID);
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STATIC EFI_STATUS FileBufferCleanup (VOID);
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STATIC EFI_STATUS FileBufferRefresh (VOID);
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STATIC EFI_STATUS FileBufferHide (VOID);
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STATIC EFI_STATUS FileBufferHandleInput (EFI_INPUT_KEY*);
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STATIC EFI_STATUS FileBufferClearLine (UINTN);
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STATIC EFI_STATUS FileBufferSetPosition (UINTN,UINTN);
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STATIC EFI_STATUS FileBufferRestorePosition (VOID);
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STATIC UINTN DisplayPosition();
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EE_FILE_BUFFER FileBuffer = {
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{0,0},
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0x00,
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0x00,
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0x00,
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0x00,
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NULL,
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FileBufferInit,
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FileBufferCleanup,
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FileBufferRefresh,
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FileBufferHide,
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FileBufferHandleInput,
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FileBufferClearLine,
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FileBufferSetPosition,
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FileBufferRestorePosition,
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};
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STATIC
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EFI_STATUS
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FileBufferInit (
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VOID
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)
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{
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UINTN i;
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FileBuffer.DisplayPosition.Row = TEXT_START_ROW;
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FileBuffer.DisplayPosition.Column = HEX_POSITION;
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FileBuffer.MaxVisibleBytes = MAX_TEXT_ROWS * 0x10;
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for (i = 0; i < ABSOLUTE_MAX_COLUMNS; i++) {
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BlankLine[i] = ' ';
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}
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LineCreateNode(MainEditor.BufferImage->ListHead);
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FileBuffer.CurrentLine = MainEditor.BufferImage->ListHead->Flink;
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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FileBufferCleanup (
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VOID
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)
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{
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return EFI_SUCCESS;
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}
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STATIC
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VOID
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RefreshOffset (
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VOID
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)
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{
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PrintAt(0,FileBuffer.DisplayPosition.Row,L"%X",FileBuffer.Offset&0xfffffff0);
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FileBufferRestorePosition();
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}
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STATIC
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EFI_STATUS
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FileBufferRefresh (
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VOID
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)
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{
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UINTN i;
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UINTN Limit;
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LIST_ENTRY *Item;
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UINTN Offset = 0x00;
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UINTN Row;
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Item = MainEditor.BufferImage->ListHead->Flink;
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FileBuffer.HighVisibleOffset = FileBuffer.MaxVisibleBytes;
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Row = FileBuffer.LowVisibleOffset / 0x10;
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for (i = 0; i < Row && Item != MainEditor.BufferImage->ListHead; i++) {
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Item = Item->Flink;
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FileBuffer.HighVisibleOffset += 0x10;
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Offset += 0x10;
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}
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Limit = FileBuffer.MaxVisibleBytes / 0x10;
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i = TEXT_START_ROW;
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for (i = TEXT_START_ROW; i <= Limit; i++) {
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if (Item->Flink != MainEditor.BufferImage->ListHead) {
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LinePrint (Item,Offset,i);
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Offset += 0x10;
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Item = Item->Flink;
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} else {
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FileBufferClearLine(i);
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}
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}
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RefreshOffset();
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FileBufferRestorePosition();
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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FileBufferRefreshDown (
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VOID
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)
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{
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UINTN Limit;
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LIST_ENTRY *Link;
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UINTN i;
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UINTN Offset;
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Limit = FileBuffer.MaxVisibleBytes / 0x10;
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Offset = FileBuffer.Offset & 0xfffffff0;
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Link = FileBuffer.CurrentLine;
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/* while (Link != MainEditor.BufferImage->ListHead) { */
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for (i = FileBuffer.DisplayPosition.Row; i < TEXT_END_ROW; i++) {
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if (Link->Flink != MainEditor.BufferImage->ListHead) {
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LinePrint (Link,Offset,i);
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Link = Link->Flink;
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Offset += 0x10;
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} else {
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FileBufferClearLine(i);
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}
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}
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FileBufferRestorePosition();
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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FileBufferHandleInput (
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IN EFI_INPUT_KEY* Key
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)
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{
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switch (Key->ScanCode) {
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case SCAN_CODE_NULL:
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FileBufferDoHexInput (Key->UnicodeChar);
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break;
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case SCAN_CODE_UP:
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FileBufferScrollUp();
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break;
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case SCAN_CODE_DOWN:
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FileBufferScrollDown();
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break;
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case SCAN_CODE_RIGHT:
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FileBufferScrollRight();
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break;
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case SCAN_CODE_LEFT:
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FileBufferScrollLeft();
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break;
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case SCAN_CODE_PGUP:
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FileBufferPageUp();
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break;
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case SCAN_CODE_PGDN:
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FileBufferPageDown();
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break;
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case SCAN_CODE_DEL:
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FileBufferDoDelete();
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break;
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case SCAN_CODE_HOME:
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FileBufferHome();
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break;
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case SCAN_CODE_END:
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FileBufferEnd();
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break;
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default:
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break;
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}
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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FileBufferHide (
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VOID
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)
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{
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UINTN i;
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UINTN NumLines;
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NumLines = FileBuffer.MaxVisibleBytes / 0x10;
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for (i = TEXT_START_ROW; i <= NumLines; i++) {
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FileBufferClearLine(i);
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}
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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FileBufferRefreshCurrentLine (
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VOID
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)
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{
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UINTN Where;
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Where = FileBuffer.DisplayPosition.Row;
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LinePrint(FileBuffer.CurrentLine,(FileBuffer.Offset & 0xfffffff0),Where);
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FileBufferRestorePosition();
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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FileBufferRefreshCurrentDigit (
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VOID
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)
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{
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UINTN Row;
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UINTN Pos;
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Row = FileBuffer.DisplayPosition.Row;
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Pos = FileBuffer.Offset % 0x10;
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DigitPrint(FileBuffer.CurrentLine,Pos,Row);
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FileBufferRestorePosition();
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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FileBufferClearLine (
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UINTN Line
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)
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{
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BlankLine[MAX_TEXT_COLUMNS-1] = 0;
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PrintAt(0,Line,BlankLine);
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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FileBufferSetPosition (
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IN UINTN Row,
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IN UINTN Column
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)
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{
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FileBuffer.DisplayPosition.Row = Row;
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FileBuffer.DisplayPosition.Column = Column;
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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FileBufferRestorePosition (
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VOID
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)
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{
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Out->SetCursorPosition (Out,FileBuffer.DisplayPosition.Column,FileBuffer.DisplayPosition.Row);
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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FileBufferScrollDown (
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VOID
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)
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{
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UINTN MaxBytes;
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UINTN HighOffset;
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UINTN CurrentRow;
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UINTN CurrentOffset;
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UINTN MaxRows;
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UINTN HighRow;
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UINTN NumBytes;
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UINTN NumLines;
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UINTN DisplayOffset;
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EE_LINE *Line;
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CurrentRow = FileBuffer.DisplayPosition.Row;
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Line = LineCurrent();
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MaxBytes = FileBuffer.MaxVisibleBytes;
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HighOffset = FileBuffer.HighVisibleOffset;
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MaxRows = TEXT_END_ROW;
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HighRow = HighOffset/0x10;
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NumBytes = MainEditor.BufferImage->NumBytes;
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NumLines = NumBytes / 0x10;
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if (Line->Link.Flink == MainEditor.BufferImage->ListHead->Blink) {
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return EFI_SUCCESS;
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}
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CurrentOffset = FileBuffer.Offset + 0x10;
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FileBuffer.Offset = CurrentOffset;
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if (CurrentRow == (MaxRows - 1)) {
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FileBuffer.LowVisibleOffset += 0x10;
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FileBuffer.HighVisibleOffset += 0x10;
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CurrentRow = MaxRows - 1;
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FileBuffer.Refresh();
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} else if (CurrentRow == HighRow) {
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return EFI_SUCCESS;
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} else {
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++CurrentRow;
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}
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Line = LineNext ();
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if ((CurrentOffset % 0x10) < Line->Size) {
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DisplayOffset = FileBuffer.DisplayPosition.Column;
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} else {
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CurrentOffset = NumBytes;
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DisplayOffset = (Line->Size*3) + HEX_POSITION;
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if (Line->Size > 0x07) {
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++DisplayOffset;
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}
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}
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FileBuffer.SetPosition(CurrentRow,DisplayOffset);
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MainEditor.StatusBar->SetOffset(CurrentOffset);
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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FileBufferScrollUp (
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VOID
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)
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{
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UINTN CurrentRow;
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UINTN MaxRows;
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UINTN LowRow;
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UINTN MaxBytes;
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UINTN LowOffset;
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UINTN CurrentOffset;
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CurrentOffset = FileBuffer.Offset;
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if ( CurrentOffset < 0x10 ) {
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return EFI_SUCCESS;
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}
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MaxBytes = FileBuffer.MaxVisibleBytes;
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MaxRows = MaxBytes / 0x10;
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LowOffset = FileBuffer.LowVisibleOffset;
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LowRow = LowOffset / 0x10;
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CurrentRow = FileBuffer.DisplayPosition.Row;
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CurrentOffset -= 0x10;
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FileBuffer.Offset -= 0x10;
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if (CurrentRow == 1) {
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FileBuffer.HighVisibleOffset -= 0x10;
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FileBuffer.LowVisibleOffset -= 0x10;
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CurrentRow = 1;
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FileBuffer.Refresh();
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} else {
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CurrentRow--;
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}
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LinePrevious ();
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FileBuffer.SetPosition(CurrentRow,FileBuffer.DisplayPosition.Column);
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MainEditor.StatusBar->SetOffset(CurrentOffset);
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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FileBufferPageUp (
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VOID
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)
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{
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UINTN MaxBytes;
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UINTN LowOffset;
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UINTN CurrentOffset;
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BOOLEAN Refresh = FALSE;
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CurrentOffset = FileBuffer.Offset;
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MaxBytes = FileBuffer.MaxVisibleBytes;
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LowOffset = FileBuffer.LowVisibleOffset;
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if (LowOffset <= MaxBytes) {
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FileBuffer.HighVisibleOffset = MaxBytes - 0x10;
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FileBuffer.LowVisibleOffset = 0x00;
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if (LowOffset > 0x00) {
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if (CurrentOffset < MaxBytes) {
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FileBuffer.Offset = 0x00;
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} else {
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FileBuffer.Offset -= (MaxBytes - 0x10);
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}
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} else {
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FileBuffer.Offset = 0x00;
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}
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Refresh = TRUE;
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FileBuffer.DisplayPosition.Row = FileBuffer.Offset/0x10 + TEXT_START_ROW;
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} else {
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FileBuffer.HighVisibleOffset = LowOffset - 0x10;
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FileBuffer.LowVisibleOffset -= (MaxBytes - 0x10);
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FileBuffer.Offset -= (MaxBytes - 0x10);
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Refresh = TRUE;
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}
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CurrentOffset -= FileBuffer.Offset;
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CurrentOffset /= 0x10;
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LineRetreat(CurrentOffset);
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if (Refresh) {
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FileBufferRefresh();
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}
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FileBuffer.DisplayPosition.Column = DisplayPosition();
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MainEditor.StatusBar->SetOffset(FileBuffer.Offset);
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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FileBufferPageDown (
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VOID
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)
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{
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UINTN NumBytes;
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UINTN MaxBytes;
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UINTN HighOffset;
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UINTN CurrentOffset;
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NumBytes = MainEditor.BufferImage->NumBytes;
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MaxBytes = FileBuffer.MaxVisibleBytes;
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HighOffset = FileBuffer.HighVisibleOffset;
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CurrentOffset = FileBuffer.Offset;
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FileBuffer.Offset = min(NumBytes,CurrentOffset+MaxBytes-0x10);
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if (HighOffset < NumBytes) {
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FileBuffer.LowVisibleOffset = HighOffset-0x10;
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FileBuffer.HighVisibleOffset += (MaxBytes - 0x10);
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FileBuffer.Refresh();
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LineAdvance((FileBuffer.Offset-CurrentOffset)/0x10);
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} else if (FileBuffer.Offset >= NumBytes-1) {
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FileBuffer.Offset &= 0xfffffff0;
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FileBuffer.Offset |= ((NumBytes-1) & 0x00000001f);
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FileBuffer.CurrentLine = LineLast()->Link.Blink;
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}
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FileBuffer.DisplayPosition.Column = DisplayPosition();
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FileBuffer.DisplayPosition.Row = (FileBuffer.Offset-FileBuffer.LowVisibleOffset)/0x10 + TEXT_START_ROW;
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MainEditor.StatusBar->SetOffset (FileBuffer.Offset);
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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FileBufferScrollLeft (
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VOID
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)
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{
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UINTN LineOffset;
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LineOffset = FileBuffer.Offset % 0x10;
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if (FileBuffer.Offset == 0x00) {
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return EFI_SUCCESS;
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}
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if (LineOffset == 0x00) {
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FileBufferScrollUp ();
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FileBuffer.Offset += 0x10;
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LineOffset = 0x0f;
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} else {
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--LineOffset;
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}
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FileBuffer.DisplayPosition.Column = HEX_POSITION + (LineOffset*3);
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if (LineOffset > 0x07) {
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++FileBuffer.DisplayPosition.Column;
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}
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--FileBuffer.Offset;
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MainEditor.StatusBar->SetOffset(FileBuffer.Offset);
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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FileBufferScrollRight (
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VOID
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)
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{
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UINTN CurrentOffset;
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UINTN LineOffset;
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EE_LINE *Line;
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Line = LineCurrent();
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CurrentOffset = FileBuffer.Offset;
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LineOffset = CurrentOffset % 0x10;
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if (CurrentOffset >= MainEditor.BufferImage->NumBytes){
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return EFI_SUCCESS;
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}
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if (LineOffset > Line->Size) {
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return EFI_SUCCESS;
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}
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if (LineOffset == 0x0f) {
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FileBufferScrollDown();
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FileBuffer.Offset &= 0xfffffff0;
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FileBuffer.DisplayPosition.Column = HEX_POSITION;
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RefreshOffset();
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} else {
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++LineOffset;
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FileBuffer.DisplayPosition.Column = HEX_POSITION + (LineOffset*3);
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if (LineOffset > 0x07) {
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++FileBuffer.DisplayPosition.Column;
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}
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++FileBuffer.Offset;
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}
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MainEditor.StatusBar->SetOffset(FileBuffer.Offset);
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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FileBufferHome (
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VOID
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)
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{
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FileBuffer.DisplayPosition.Column = HEX_POSITION;
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FileBuffer.Offset &= 0xfffffff0;
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MainEditor.StatusBar->SetOffset(FileBuffer.Offset);
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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FileBufferEnd (
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VOID
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)
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{
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EE_LINE *Line;
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Line = LineCurrent();
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FileBuffer.Offset &= 0xfffffff0;
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if (Line->Size > 0) {
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FileBuffer.Offset |= ((Line->Size-1) & 0x0000000f);
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}
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FileBuffer.DisplayPosition.Column = DisplayPosition();
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MainEditor.StatusBar->SetOffset(FileBuffer.Offset);
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return EFI_SUCCESS;
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}
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STATIC
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EFI_STATUS
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FileBufferDoHexInput (
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IN CHAR16 Char
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)
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{
|
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EE_LINE *Line;
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UINTN LineOffset;
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UINTN Pos;
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UINTN Num;
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|
if (Char == CHAR_BS) {
|
|
FileBufferDoBackspace();
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
if (Char >= 'A' && Char <= 'F') {
|
|
Num = Char - 'A' + 0xa;
|
|
} else if (Char >= 'a' && Char <= 'f') {
|
|
Num = Char - 'a' + 0xa;
|
|
} else if (Char >= '0' && Char <= '9') {
|
|
Num = Char - '0';
|
|
} else {
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
LineOffset = FileBuffer.Offset % 0x10;
|
|
Pos = FileBuffer.DisplayPosition.Column - HEX_POSITION;
|
|
if (LineOffset > 0x07) {
|
|
Pos -= (0x07*3)+1;
|
|
}
|
|
|
|
if (FileBuffer.CurrentLine == MainEditor.BufferImage->ListHead->Blink) {
|
|
Line = LineCreateNode(MainEditor.BufferImage->ListHead);
|
|
FileBuffer.CurrentLine = Line->Link.Blink;
|
|
}
|
|
|
|
Line = LineCurrent();
|
|
|
|
Line->Buffer[LineOffset] <<= 4;
|
|
Line->Buffer[LineOffset] |= Num;
|
|
|
|
|
|
if (FileBuffer.Offset == MainEditor.BufferImage->NumBytes) {
|
|
++Line->Size;
|
|
++MainEditor.BufferImage->NumBytes;
|
|
} else if (FileBuffer.Offset == (MainEditor.BufferImage->NumBytes - 1)) {
|
|
if ((Pos%3) != 0 && Line->Size == 0x10) {
|
|
Line = LineCreateNode(MainEditor.BufferImage->ListHead);
|
|
}
|
|
}
|
|
|
|
FileBufferRefreshCurrentDigit();
|
|
|
|
if ((Pos % 3) != 0) {
|
|
FileBufferScrollRight();
|
|
} else {
|
|
++FileBuffer.DisplayPosition.Column;
|
|
}
|
|
|
|
FileBufferRestorePosition();
|
|
|
|
FileModification();
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
FileBufferDoBackspace (
|
|
VOID
|
|
)
|
|
{
|
|
UINTN LinePos;
|
|
|
|
if (FileBuffer.Offset == 0x00) {
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
FileBufferScrollLeft();
|
|
LinePos = FileBuffer.Offset % 0x10;
|
|
|
|
LineDeleteAt(FileBuffer.CurrentLine,LinePos,1);
|
|
|
|
FileBufferRefreshDown();
|
|
FileModification();
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
STATIC
|
|
EFI_STATUS
|
|
FileBufferDoDelete (
|
|
VOID
|
|
)
|
|
{
|
|
LIST_ENTRY *Link;
|
|
UINTN LinePos;
|
|
|
|
if (FileBuffer.Offset == MainEditor.BufferImage->NumBytes) {
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
LinePos = FileBuffer.Offset % 0x10;
|
|
Link = FileBuffer.CurrentLine;
|
|
|
|
LineDeleteAt(Link,LinePos,1);
|
|
|
|
if (FileBuffer.Offset == MainEditor.BufferImage->NumBytes) {
|
|
FileBufferScrollLeft();
|
|
}
|
|
|
|
FileBufferRefreshDown();
|
|
FileModification();
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
STATIC
|
|
UINTN
|
|
DisplayPosition (
|
|
VOID
|
|
)
|
|
{
|
|
EE_LINE *Line;
|
|
UINTN Pos = 0;
|
|
|
|
Line = LineCurrent();
|
|
Pos = FileBuffer.Offset & 0x0000000f;
|
|
Pos = Pos * 3 + HEX_POSITION;
|
|
|
|
if (Line->Size > 0x07) {
|
|
Pos++;
|
|
}
|
|
|
|
return Pos;
|
|
}
|
|
|
|
#endif /* _LIB_FILE_BUFFER */
|