audk/MdePkg/Include/Library/PrintLib.h

/** @file
  Library that provides print services

  Copyright (c) 2006, 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:  PrintLib.h

**/

#ifndef __PRINT_LIB_H__
#define __PRINT_LIB_H__

///
/// Define the maximum number of characters that are required to
/// encode a decimal, hexidecimal, GUID, or TIME value with a NULL 
/// terminator.
///  
///  Maximum Length Decimal String     = 28
///    "-9,223,372,036,854,775,808"
///  Maximum Length Hexidecimal String = 17
///    "FFFFFFFFFFFFFFFF"
///  Maximum Length GUID               = 37
///    "00000000-0000-0000-0000-000000000000"
///  Maximum Length TIME               = 18
///    "12/12/2006  12:12"
///
#define MAXIMUM_VALUE_CHARACTERS  38

///
/// Flags bitmask values use in UnicodeValueToString() and 
/// AcsiiValueToString()
///
#define LEFT_JUSTIFY      0x01
#define COMMA_TYPE        0x08
#define PREFIX_ZERO       0x20

/**
  Produces a Null-terminated Unicode string in an output buffer based on 
  a Null-terminated Unicode format string and a VA_LIST argument list
  
  Produces a Null-terminated Unicode string in the output buffer specified by StartOfBuffer
  and BufferSize.  
  The Unicode string is produced by parsing the format string specified by FormatString.  
  Arguments are pulled from the variable argument list specified by Marker based on the 
  contents of the format string.  
  The length of the produced output buffer is returned.
  If BufferSize is 0, then no output buffer is produced and 0 is returned.

  If BufferSize is not 0 and StartOfBuffer is NULL, then ASSERT().
  If BufferSize is not 0 and FormatString is NULL, then ASSERT().
  If PcdMaximumUnicodeStringLength is not zero, and FormatString contains more than 
  PcdMaximumUnicodeStringLength Unicode characters, then ASSERT().
  If PcdMaximumUnicodeStringLength is not zero, and produced Null-terminated Unicode string
  contains more than PcdMaximumUnicodeStringLength Unicode characters, then ASSERT().

  @param  StartOfBuffer   APointer to the output buffer for the produced Null-terminated 
                          Unicode string.
  @param  BufferSize      The size, in bytes, of the output buffer specified by StartOfBuffer.
  @param  FormatString    Null-terminated Unicode format string.
  @param  Marker          VA_LIST marker for the variable argument list.
  
  @return return Length of the produced output buffer.

**/
UINTN
EFIAPI
UnicodeVSPrint (
  OUT CHAR16        *StartOfBuffer,
  IN  UINTN         BufferSize,
  IN  CONST CHAR16  *FormatString,
  IN  VA_LIST       Marker
  );

/**
  Produces a Null-terminated Unicode string in an output buffer based on a Null-terminated 
  Unicode format string and variable argument list.
  
  Produces a Null-terminated Unicode string in the output buffer specified by StartOfBuffer
  and BufferSize.
  The Unicode string is produced by parsing the format string specified by FormatString.
  Arguments are pulled from the variable argument list based on the contents of the format string.
  The length of the produced output buffer is returned.  
  If BufferSize is 0, then no output buffer is produced and 0 is returned.

  If BufferSize is not 0 and StartOfBuffer is NULL, then ASSERT().
  If BufferSize is not 0 and FormatString is NULL, then ASSERT().
  If PcdMaximumUnicodeStringLength is not zero, and FormatString contains more than 
  PcdMaximumUnicodeStringLength Unicode characters, then ASSERT().
  If PcdMaximumUnicodeStringLength is not zero, and produced Null-terminated Unicode string
  contains more than PcdMaximumUnicodeStringLength Unicode characters, then ASSERT().

  @param  StartOfBuffer   APointer to the output buffer for the produced Null-terminated 
                          Unicode string.
  @param  BufferSize      The size, in bytes, of the output buffer specified by StartOfBuffer.
  @param  FormatString    Null-terminated Unicode format string.
  
  @return Length of the produced output buffer.

**/
UINTN
EFIAPI
UnicodeSPrint (
  OUT CHAR16        *StartOfBuffer,
  IN  UINTN         BufferSize,
  IN  CONST CHAR16  *FormatString,
  ...
  );

/**
  Produces a Null-terminated Unicode string in an output buffer based on a Null-terminated
  ASCII format string and a VA_LIST argument list
  
  Produces a Null-terminated Unicode string in the output buffer specified by StartOfBuffer
  and BufferSize.
  The Unicode string is produced by parsing the format string specified by FormatString.
  Arguments are pulled from the variable argument list specified by Marker based on the 
  contents of the format string.
  The length of the produced output buffer is returned.
  If BufferSize is 0, then no output buffer is produced and 0 is returned.

  If BufferSize is not 0 and StartOfBuffer is NULL, then ASSERT().
  If BufferSize is not 0 and FormatString is NULL, then ASSERT().
  If PcdMaximumUnicodeStringLength is not zero, and FormatString contains more than 
  PcdMaximumUnicodeStringLength Unicode characters, then ASSERT().
  If PcdMaximumUnicodeStringLength is not zero, and produced Null-terminated Unicode string
  contains more than PcdMaximumUnicodeStringLength Unicode characters, then ASSERT().

  @param  StartOfBuffer   APointer to the output buffer for the produced Null-terminated 
                          Unicode string.
  @param  BufferSize      The size, in bytes, of the output buffer specified by StartOfBuffer.
  @param  FormatString    Null-terminated Unicode format string.
  @param  Marker          VA_LIST marker for the variable argument list.
  
  @return Length of the produced output buffer.

**/
UINTN
EFIAPI
UnicodeVSPrintAsciiFormat (
  OUT CHAR16       *StartOfBuffer,
  IN  UINTN        BufferSize,
  IN  CONST CHAR8  *FormatString,
  IN  VA_LIST      Marker
  );

/**
  Produces a Null-terminated Unicode string in an output buffer based on a Null-terminated 
  ASCII format string and  variable argument list.
  
  Produces a Null-terminated Unicode string in the output buffer specified by StartOfBuffer
  and BufferSize.
  The Unicode string is produced by parsing the format string specified by FormatString.
  Arguments are pulled from the variable argument list based on the contents of the 
  format string.
  The length of the produced output buffer is returned.
  If BufferSize is 0, then no output buffer is produced and 0 is returned.

  If BufferSize is not 0 and StartOfBuffer is NULL, then ASSERT().
  If BufferSize is not 0 and FormatString is NULL, then ASSERT().
  If PcdMaximumUnicodeStringLength is not zero, and FormatString contains more than 
  PcdMaximumUnicodeStringLength Unicode characters, then ASSERT().
  If PcdMaximumUnicodeStringLength is not zero, and produced Null-terminated Unicode string
  contains more than PcdMaximumUnicodeStringLength Unicode characters, then ASSERT().

  @param  StartOfBuffer   APointer to the output buffer for the produced Null-terminated 
                          Unicode string.
  @param  BufferSize      The size, in bytes, of the output buffer specified by StartOfBuffer.
  @param  FormatString    Null-terminated Unicode format string.
  
  @return Length of the produced output buffer.

**/
UINTN
EFIAPI
UnicodeSPrintAsciiFormat (
  OUT CHAR16       *StartOfBuffer,
  IN  UINTN        BufferSize,
  IN  CONST CHAR8  *FormatString,
  ...
  );

/**
  Produces a Null-terminated ASCII string in an output buffer based on a Null-terminated
  ASCII format string and a VA_LIST argument list.
  
  Produces a Null-terminated ASCII string in the output buffer specified by StartOfBuffer
  and BufferSize.
  The ASCII string is produced by parsing the format string specified by FormatString.
  Arguments are pulled from the variable argument list specified by Marker based on 
  the contents of the format string.
  The length of the produced output buffer is returned.
  If BufferSize is 0, then no output buffer is produced and 0 is returned.

  If BufferSize is not 0 and StartOfBuffer is NULL, then ASSERT().
  If BufferSize is not 0 and FormatString is NULL, then ASSERT().
  If PcdMaximumUnicodeStringLength is not zero, and FormatString contains more than 
  PcdMaximumUnicodeStringLength ASCII characters, then ASSERT().
  If PcdMaximumUnicodeStringLength is not zero, and produced Null-terminated Unicode string
  contains more than PcdMaximumUnicodeStringLength ASCII characters, then ASSERT().

  @param  StartOfBuffer   APointer to the output buffer for the produced Null-terminated 
                          ASCII string.
  @param  BufferSize      The size, in bytes, of the output buffer specified by StartOfBuffer.
  @param  FormatString    Null-terminated Unicode format string.
  @param  Marker          VA_LIST marker for the variable argument list.
  
  @return Length of the produced output buffer.

**/
UINTN
EFIAPI
AsciiVSPrint (
  OUT CHAR8         *StartOfBuffer,
  IN  UINTN         BufferSize,
  IN  CONST CHAR8   *FormatString,
  IN  VA_LIST       Marker
  );

/**
  Produces a Null-terminated ASCII string in an output buffer based on a Null-terminated
  ASCII format string and  variable argument list.
  
  Produces a Null-terminated ASCII string in the output buffer specified by StartOfBuffer
  and BufferSize.
  The ASCII string is produced by parsing the format string specified by FormatString.
  Arguments are pulled from the variable argument list based on the contents of the 
  format string.
  The length of the produced output buffer is returned.
  If BufferSize is 0, then no output buffer is produced and 0 is returned.

  If BufferSize is not 0 and StartOfBuffer is NULL, then ASSERT().
  If BufferSize is not 0 and FormatString is NULL, then ASSERT().
  If PcdMaximumUnicodeStringLength is not zero, and FormatString contains more than 
  PcdMaximumUnicodeStringLength ASCII characters, then ASSERT().
  If PcdMaximumUnicodeStringLength is not zero, and produced Null-terminated Unicode string
  contains more than PcdMaximumUnicodeStringLength ASCII characters, then ASSERT().

  @param  StartOfBuffer   APointer to the output buffer for the produced Null-terminated 
                          ASCII string.
  @param  BufferSize      The size, in bytes, of the output buffer specified by StartOfBuffer.
  @param  FormatString    Null-terminated Unicode format string.
  
  @return Length of the produced output buffer.

**/
UINTN
EFIAPI
AsciiSPrint (
  OUT CHAR8        *StartOfBuffer,
  IN  UINTN        BufferSize,
  IN  CONST CHAR8  *FormatString,
  ...
  );

/**
  Produces a Null-terminated ASCII string in an output buffer based on a Null-terminated
  ASCII format string and a VA_LIST argument list.
  
  Produces a Null-terminated ASCII string in the output buffer specified by StartOfBuffer
  and BufferSize.
  The ASCII string is produced by parsing the format string specified by FormatString.
  Arguments are pulled from the variable argument list specified by Marker based on 
  the contents of the format string.
  The length of the produced output buffer is returned.
  If BufferSize is 0, then no output buffer is produced and 0 is returned.

  If BufferSize is not 0 and StartOfBuffer is NULL, then ASSERT().
  If BufferSize is not 0 and FormatString is NULL, then ASSERT().
  If PcdMaximumUnicodeStringLength is not zero, and FormatString contains more than 
  PcdMaximumUnicodeStringLength ASCII characters, then ASSERT().
  If PcdMaximumUnicodeStringLength is not zero, and produced Null-terminated Unicode string
  contains more than PcdMaximumUnicodeStringLength ASCII characters, then ASSERT().

  @param  StartOfBuffer   APointer to the output buffer for the produced Null-terminated 
                          ASCII string.
  @param  BufferSize      The size, in bytes, of the output buffer specified by StartOfBuffer.
  @param  FormatString    Null-terminated Unicode format string.
  @param  Marker          VA_LIST marker for the variable argument list.
  
  @return Length of the produced output buffer.

**/
UINTN
EFIAPI
AsciiVSPrintUnicodeFormat (
  OUT CHAR8         *StartOfBuffer,
  IN  UINTN         BufferSize,
  IN  CONST CHAR16  *FormatString,
  IN  VA_LIST       Marker
  );

/**
  Produces a Null-terminated ASCII string in an output buffer based on a Null-terminated
  ASCII format string and  variable argument list.
  
  Produces a Null-terminated ASCII string in the output buffer specified by StartOfBuffer
  and BufferSize.
  The ASCII string is produced by parsing the format string specified by FormatString.
  Arguments are pulled from the variable argument list based on the contents of the 
  format string.
  The length of the produced output buffer is returned.
  If BufferSize is 0, then no output buffer is produced and 0 is returned.

  If BufferSize is not 0 and StartOfBuffer is NULL, then ASSERT().
  If BufferSize is not 0 and FormatString is NULL, then ASSERT().
  If PcdMaximumUnicodeStringLength is not zero, and FormatString contains more than 
  PcdMaximumUnicodeStringLength ASCII characters, then ASSERT().
  If PcdMaximumUnicodeStringLength is not zero, and produced Null-terminated Unicode string
  contains more than PcdMaximumUnicodeStringLength ASCII characters, then ASSERT().

  @param  StartOfBuffer   APointer to the output buffer for the produced Null-terminated 
                          ASCII string.
  @param  BufferSize      The size, in bytes, of the output buffer specified by StartOfBuffer.
  @param  FormatString    Null-terminated Unicode format string.
  
  @return Length of the produced output buffer.

**/
UINTN
EFIAPI
AsciiSPrintUnicodeFormat (
  OUT CHAR8         *StartOfBuffer,
  IN  UINTN         BufferSize,
  IN  CONST CHAR16  *FormatString,
  ...
  );

/**
  Converts a decimal value to a Null-terminated Unicode string.
  
  Converts the decimal number specified by Value to a Null-terminated Unicode 
  string specified by Buffer containing at most Width characters.
  If Width is 0 then a width of  MAXIMUM_VALUE_CHARACTERS is assumed.
  The total number of characters placed in Buffer is returned.
  If the conversion contains more than Width characters, then only the first
  Width characters are returned, and the total number of characters 
  required to perform the conversion is returned.
  Additional conversion parameters are specified in Flags.  
  The Flags bit LEFT_JUSTIFY is always ignored.
  All conversions are left justified in Buffer.
  If Width is 0, PREFIX_ZERO is ignored in Flags.
  If COMMA_TYPE is set in Flags, then PREFIX_ZERO is ignored in Flags, and commas
  are inserted every 3rd digit starting from the right.
  If Value is < 0, then the fist character in Buffer is a '-'.
  If PREFIX_ZERO is set in Flags and PREFIX_ZERO is not being ignored, 
  then Buffer is padded with '0' characters so the combination of the optional '-' 
  sign character, '0' characters, digit characters for Value, and the Null-terminator
  add up to Width characters.

  If Buffer is NULL, then ASSERT().
  If unsupported bits are set in Flags, then ASSERT().
  If Width >= MAXIMUM_VALUE_CHARACTERS, then ASSERT()

  @param  Buffer  Pointer to the output buffer for the produced Null-terminated
                  Unicode string.
  @param  Flags   The bitmask of flags that specify left justification, zero pad, and commas.
  @param  Value   The 64-bit signed value to convert to a string.
  @param  Width    The maximum number of Unicode characters to place in Buffer.
  
  @return Total number of characters required to perform the conversion.

**/
UINTN
EFIAPI
UnicodeValueToString (
  IN OUT CHAR16  *Buffer,
  IN UINTN       Flags,
  IN INT64       Value,
  IN UINTN       Width
  );

/**
  Converts a decimal value to a Null-terminated ASCII string.
  
  Converts the decimal number specified by Value to a Null-terminated ASCII string 
  specified by Buffer containing at most Width characters.
  If Width is 0 then a width of  MAXIMUM_VALUE_CHARACTERS is assumed.
  The total number of characters placed in Buffer is returned.
  If the conversion contains more than Width characters, then only the first Width
  characters are returned, and the total number of characters required to perform
  the conversion is returned.
  Additional conversion parameters are specified in Flags.  
  The Flags bit LEFT_JUSTIFY is always ignored.
  All conversions are left justified in Buffer.
  If Width is 0, PREFIX_ZERO is ignored in Flags.
  If COMMA_TYPE is set in Flags, then PREFIX_ZERO is ignored in Flags, and commas 
  are inserted every 3rd digit starting from the right.
  If Value is < 0, then the fist character in Buffer is a '-'.
  If PREFIX_ZERO is set in Flags and PREFIX_ZERO is not being ignored, then Buffer
  is padded with '0' characters so the combination of the optional '-'
  sign character, '0' characters, digit characters for Value, and the 
  Null-terminator add up to Width characters.

  If Buffer is NULL, then ASSERT().
  If unsupported bits are set in Flags, then ASSERT().
  If Width >= MAXIMUM_VALUE_CHARACTERS, then ASSERT()

  @param  Buffer  Pointer to the output buffer for the produced Null-terminated
                  ASCII string.
  @param  Flags   The bitmask of flags that specify left justification, zero pad, and commas.
  @param  Value   The 64-bit signed value to convert to a string.
  @param  Width    The maximum number of ASCII characters to place in Buffer.
  
  @return Total number of characters required to perform the conversion.

**/
UINTN
EFIAPI
AsciiValueToString (
  IN OUT CHAR8  *Buffer,
  IN UINTN      Flags,
  IN INT64      Value,
  IN UINTN      Width
  );

#endif