mirror of https://github.com/acidanthera/audk.git
155 lines
4.1 KiB
C
155 lines
4.1 KiB
C
/*++
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Copyright (c) 2004 - 2007, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name:
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Print.c
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Abstract:
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Basic Ascii AvSPrintf() function named VSPrint(). VSPrint() enables very
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simple implemenation of SPrint() and Print() to support debug.
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You can not Print more than EFI_DRIVER_LIB_MAX_PRINT_BUFFER characters at a
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time. This makes the implementation very simple.
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VSPrint, Print, SPrint format specification has the follwoing form
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%[flags][width]type
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flags:
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'-' - Left justify
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'+' - Prefix a sign
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' ' - Prefix a blank
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',' - Place commas in numberss
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'0' - Prefix for width with zeros
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'l' - UINT64
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'L' - UINT64
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width:
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'*' - Get width from a UINTN argumnet from the argument list
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Decimal number that represents width of print
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type:
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'X' - argument is a UINTN hex number, prefix '0'
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'x' - argument is a hex number
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'd' - argument is a decimal number
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'a' - argument is an ascii string
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'S','s' - argument is an Unicode string
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'g' - argument is a pointer to an EFI_GUID
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't' - argument is a pointer to an EFI_TIME structure
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'c' - argument is an ascii character
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'r' - argument is EFI_STATUS
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'%' - Print a %
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--*/
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#include "Tiano.h"
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#include "EfiDriverLib.h"
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#include "TianoCommon.h"
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#include "EfiCommonLib.h"
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#include "PrintWidth.h"
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#include "EfiPrintLib.h"
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#include "Print.h"
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UINTN
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SPrint (
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OUT CHAR_W *Buffer,
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IN UINTN BufferSize,
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IN CONST CHAR_W *Format,
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...
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)
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/*++
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Routine Description:
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SPrint function to process format and place the results in Buffer.
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Arguments:
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Buffer - Wide char buffer to print the results of the parsing of Format into.
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BufferSize - Maximum number of characters to put into buffer. Zero means no
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limit.
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Format - Format string see file header for more details.
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... - Vararg list consumed by processing Format.
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Returns:
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Number of characters printed.
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--*/
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{
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UINTN Return;
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VA_LIST Marker;
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VA_START (Marker, Format);
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Return = VSPrint (Buffer, BufferSize, Format, Marker);
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VA_END (Marker);
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return Return;
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}
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UINTN
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EFIAPI
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VSPrint (
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OUT CHAR_W *StartOfBuffer,
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IN UINTN BufferSize,
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IN CONST CHAR_W *FormatString,
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IN VA_LIST Marker
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)
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/*++
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Routine Description:
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VSPrint function to process format and place the results in Buffer. Since a
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VA_LIST is used this rountine allows the nesting of Vararg routines. Thus
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this is the main print working routine
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Arguments:
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StartOfBuffer - Unicode buffer to print the results of the parsing of Format into.
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BufferSize - Maximum number of characters to put into buffer. Zero means
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no limit.
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FormatString - Unicode format string see file header for more details.
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Marker - Vararg list consumed by processing Format.
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Returns:
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Number of characters printed.
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--*/
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{
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EFI_STATUS Status;
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EFI_PRINT_PROTOCOL *PrintProtocol;
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Status = gBS->LocateProtocol (
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&gEfiPrintProtocolGuid,
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NULL,
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(VOID*)&PrintProtocol
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);
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if (EFI_ERROR (Status)) {
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return 0;
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} else {
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return PrintProtocol->VSPrint (
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StartOfBuffer,
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BufferSize,
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FormatString,
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Marker
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);
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}
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}
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