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