text: /*++
  
  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:
  
    StdErr.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 "EfiCommonLib.h"
  #include "EfiPrintLib.h"
  #include "Print.h"
  
  
  UINTN
  ErrorPrint (
    IN CONST CHAR16 *ErrorString,
    IN CONST CHAR8  *Format,
    ...
    )
  /*++
  
  Routine Description:
  
    Print function for a maximum of EFI_DRIVER_LIB_MAX_PRINT_BUFFER ascii 
    characters.
  
  Arguments:
  
    ErrorString - String of error infomation.
  
    Format      - Ascii format string see file header for more details.
  
    ...         - Vararg list consumed by processing Format.
  
  Returns: 
  
    Number of characters printed.
  
  --*/
  {
    UINTN   Return;
    VA_LIST Marker;
    UINTN   Index;
    UINTN   MaxIndex;
    CHAR16  Buffer[EFI_DRIVER_LIB_MAX_PRINT_BUFFER];
    CHAR16  UnicodeFormat[EFI_DRIVER_LIB_MAX_PRINT_BUFFER];
  
    MaxIndex = EfiAsciiStrLen ((CHAR8 *) Format);
    if (MaxIndex >= EFI_DRIVER_LIB_MAX_PRINT_BUFFER) {
      //
      // Format string was too long for use to process.
      //
      return 0;
    }
  
    if (ErrorString != '\0') {
      if (gST->StdErr != NULL) {
        //
        // To be extra safe make sure StdErr has been initialized
        //
        gST->StdErr->SetAttribute (gST->StdErr, EFI_TEXT_ATTR (EFI_RED, EFI_BLACK));
        gST->StdErr->OutputString (gST->StdErr, (CHAR16 *) ErrorString);
        gST->StdErr->SetAttribute (gST->StdErr, EFI_TEXT_ATTR (EFI_WHITE, EFI_BLACK));
      }
    }
  
    for (Index = 0; Index < MaxIndex; Index++) {
      UnicodeFormat[Index] = (CHAR16) Format[Index];
    }
  
    UnicodeFormat[Index] = 0;
  
    VA_START (Marker, Format);
    Return = VSPrint (Buffer, sizeof (Buffer), UnicodeFormat, Marker);
    VA_END (Marker);
  
    //
    // Need to convert to Unicode to do an OutputString
    //
  
    if (gST->StdErr != NULL) {
      //
      // To be extra safe make sure StdErr has been initialized
      //
      gST->StdErr->OutputString (gST->StdErr, Buffer);
    }
  
    return Return;
  }
  
  
  UINTN
  Aprint (
    IN CONST CHAR8  *Format,
    ...
    )
  /*++
  
  Routine Description:
  
    Print function for a maximum of EFI_DRIVER_LIB_MAX_PRINT_BUFFER ascii 
    characters.
  
  Arguments:
  
    Format - Ascii format string see file header for more details.
  
    ...    - Vararg list consumed by processing Format.
  
  Returns: 
  
    Number of characters printed.
  
  --*/
  {
    UINTN   Return;
    VA_LIST Marker;
    UINTN   Index;
    UINTN   MaxIndex;
    CHAR16  Buffer[EFI_DRIVER_LIB_MAX_PRINT_BUFFER];
    CHAR16  UnicodeFormat[EFI_DRIVER_LIB_MAX_PRINT_BUFFER];
  
    MaxIndex = EfiAsciiStrLen ((CHAR8 *) Format);
    if (MaxIndex >= EFI_DRIVER_LIB_MAX_PRINT_BUFFER) {
      //
      // Format string was too long for use to process.
      //
      return 0;
    }
  
    for (Index = 0; Index < EFI_DRIVER_LIB_MAX_PRINT_BUFFER; Index++) {
      UnicodeFormat[Index] = (CHAR16) Format[Index];
    }
  
    VA_START (Marker, Format);
    Return = VSPrint (Buffer, sizeof (Buffer), UnicodeFormat, Marker);
    VA_END (Marker);
  
    //
    // Need to convert to Unicode to do an OutputString
    //
  
    if (gST->ConOut != NULL) {
      //
      // To be extra safe make sure ConOut has been initialized
      //
      gST->ConOut->OutputString (gST->ConOut, Buffer);
    }
  
    return Return;
  }
  
  
  UINTN
  Print (
    IN CONST CHAR16  *Format,
    ...
    )
  /*++
  
  Routine Description:
  
    Print function for a maximum of EFI_DRIVER_LIB_MAX_PRINT_BUFFER ascii 
    characters.
  
  Arguments:
  
    Format - Ascii format string see file header for more details.
  
    ...    - Vararg list consumed by processing Format.
  
  Returns: 
  
    Number of characters printed.
  
  --*/
  {
    UINTN   Return;
    VA_LIST Marker;
    CHAR16  Buffer[EFI_DRIVER_LIB_MAX_PRINT_BUFFER];
  
    VA_START (Marker, Format);
    Return = VSPrint (Buffer, sizeof (Buffer), Format, Marker);
    VA_END (Marker);
  
    if (gST->ConOut != NULL) {
      //
      // To be extra safe make sure ConOut has been initialized
      //
      gST->ConOut->OutputString (gST->ConOut, Buffer);
    }
  
    return Return;
  }
  
  UINTN
  UPrint (
    IN CONST CHAR16  *Format,
    ...
    )
  /*++
  
  Routine Description:
  
    Print function for a maximum of EFI_DRIVER_LIB_MAX_PRINT_BUFFER ascii 
    characters.
  
  Arguments:
  
    Format - Ascii format string see file header for more details.
  
    ...    - Vararg list consumed by processing Format.
  
  Returns: 
  
    Number of characters printed.
  
  --*/
  {
    UINTN   Return;
    VA_LIST Marker;
    CHAR16  Buffer[EFI_DRIVER_LIB_MAX_PRINT_BUFFER];
  
    VA_START (Marker, Format);
    Return = VSPrint (Buffer, sizeof (Buffer), Format, Marker);
    VA_END (Marker);
  
    if (gST->ConOut != NULL) {
      //
      // To be extra safe make sure ConOut has been initialized
      //
      gST->ConOut->OutputString (gST->ConOut, Buffer);
    }
  
    return Return;
  }
  