mirror of https://github.com/acidanthera/audk.git
83 lines
3.2 KiB
C
83 lines
3.2 KiB
C
/** @file
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The lite print protocol defines only one print function to
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print the format unicode string.
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Copyright (c) 2006 - 2008, Intel Corporation
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All rights reserved. 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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**/
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#ifndef __PPRINT_H__
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#define __PPRINT_H__
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#define EFI_PRINT_PROTOCOL_GUID \
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{ 0xdf2d868e, 0x32fc, 0x4cf0, {0x8e, 0x6b, 0xff, 0xd9, 0x5d, 0x13, 0x43, 0xd0} }
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//
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// Forward reference for pure ANSI compatability
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//
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typedef struct _EFI_PRINT_PROTOCOL EFI_PRINT_PROTOCOL;
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/**
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Produces a Null-terminated Unicode string in an output buffer based on
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a Null-terminated Unicode format string and a VA_LIST argument list
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Produces a Null-terminated Unicode string in the output buffer specified by StartOfBuffer
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and BufferSize.
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The Unicode string is produced by parsing the format string specified by FormatString.
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Arguments are pulled from the variable argument list specified by Marker based on the
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contents of the format string.
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The number of Unicode characters in the produced output buffer is returned not including
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the Null-terminator.
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If BufferSize is 0 or 1, then no output buffer is produced and 0 is returned.
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If BufferSize > 1 and StartOfBuffer is NULL, then ASSERT().
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If BufferSize > 1 and StartOfBuffer is not aligned on a 16-bit boundary, then ASSERT().
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If BufferSize > 1 and FormatString is NULL, then ASSERT().
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If BufferSize > 1 and FormatString is not aligned on a 16-bit boundary, then ASSERT().
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If PcdMaximumUnicodeStringLength is not zero, and FormatString contains more than
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PcdMaximumUnicodeStringLength Unicode characters not including the Null-terminator, then
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ASSERT().
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If PcdMaximumUnicodeStringLength is not zero, and produced Null-terminated Unicode string
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contains more than PcdMaximumUnicodeStringLength Unicode characters not including the
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Null-terminator, then ASSERT().
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@param StartOfBuffer A pointer to the output buffer for the produced Null-terminated
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Unicode string.
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@param BufferSize The size, in bytes, of the output buffer specified by StartOfBuffer.
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@param FormatString Null-terminated Unicode format string.
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@param Marker VA_LIST marker for the variable argument list.
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@return The number of Unicode characters in the produced output buffer not including the
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Null-terminator.
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**/
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typedef
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UINTN
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(EFIAPI *UNI_VSPRINT)(
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OUT CHAR16 *StartOfBuffer,
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IN UINTN BufferSize,
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IN CONST CHAR16 *FormatString,
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IN VA_LIST Marker
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);
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/**
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The EFI_PRINT_PROTOCOL provides one service to produce a Null-terminated Unicode string
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based on a Null-terminated Unicode format string and a VA_LIST argument list and fill into
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the buffer as output
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**/
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struct _EFI_PRINT_PROTOCOL {
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UNI_VSPRINT VSPrint;
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};
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extern EFI_GUID gEfiPrintProtocolGuid;
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#endif
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