diff options
Diffstat (limited to 'src/VBox/Devices/EFI/Firmware/MdeModulePkg/Universal/Console/TerminalDxe/Ansi.c')
-rw-r--r-- | src/VBox/Devices/EFI/Firmware/MdeModulePkg/Universal/Console/TerminalDxe/Ansi.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/MdeModulePkg/Universal/Console/TerminalDxe/Ansi.c b/src/VBox/Devices/EFI/Firmware/MdeModulePkg/Universal/Console/TerminalDxe/Ansi.c new file mode 100644 index 00000000..c1f46a22 --- /dev/null +++ b/src/VBox/Devices/EFI/Firmware/MdeModulePkg/Universal/Console/TerminalDxe/Ansi.c @@ -0,0 +1,73 @@ +/** @file + Implementation of translation upon PC ANSI. + +Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR> +SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + + +#include "Terminal.h" + +/** + Translate all raw data in the Raw FIFO into unicode, and insert + them into Unicode FIFO. + + @param TerminalDevice The terminal device. + +**/ +VOID +AnsiRawDataToUnicode ( + IN TERMINAL_DEV *TerminalDevice + ) +{ + UINT8 RawData; + + // + // pop the raw data out from the raw fifo, + // and translate it into unicode, then push + // the unicode into unicode fifo, until the raw fifo is empty. + // + while (!IsRawFiFoEmpty (TerminalDevice) && !IsUnicodeFiFoFull (TerminalDevice)) { + + RawFiFoRemoveOneKey (TerminalDevice, &RawData); + + UnicodeFiFoInsertOneKey (TerminalDevice, (UINT16) RawData); + } +} + +/** + Check if input string is valid Ascii string, valid EFI control characters + or valid text graphics. + + @param TerminalDevice The terminal device. + @param WString The input string. + + @retval EFI_UNSUPPORTED If not all input characters are valid. + @retval EFI_SUCCESS If all input characters are valid. + +**/ +EFI_STATUS +AnsiTestString ( + IN TERMINAL_DEV *TerminalDevice, + IN CHAR16 *WString + ) +{ + CHAR8 GraphicChar; + + // + // support three kind of character: + // valid ascii, valid efi control char, valid text graphics. + // + for (; *WString != CHAR_NULL; WString++) { + + if ( !(TerminalIsValidAscii (*WString) || + TerminalIsValidEfiCntlChar (*WString) || + TerminalIsValidTextGraphics (*WString, &GraphicChar, NULL) )) { + + return EFI_UNSUPPORTED; + } + } + + return EFI_SUCCESS; +} |