1 // Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 // STDIO functions implemented over EPOC32

    15 // 

    16 //

    17 

    18 #include <e32std.h>

    19 #include <_ansi.h>

    20 #include <stdio_r.h>

    21 

    22 #define UNUSED_VAR(a) a = a

    23 

    24 extern "C" {

    25 int e32cvt (char *buf, int buflen, double d, int width, int prec, int /*flags*/, int fchar)

    26 	{

    27 	TPtr8 res((TText8*)buf, buflen);

    28 	TBuf8<0x50> fmt;

    29 	TBool capitalE=EFalse;

    30 	switch(fchar)

    31 	{

    32 	case 'f':

    33 		fchar='f';

    34 		break;

    35 

    36 	case 'E':

    37 		capitalE=ETrue;	// and fallthrough

    38 	case 'e':

    39 		fchar='e';

    40 		break;

    41 

    42 	case 'G':

    43 		capitalE=ETrue;	// and fallthrough

    44 	case 'g':

    45 		fchar='g';

    46 		break;

    47 	default:

    48 		return 0;

    49 	}

    50 	// construct a format string for use with TDes::Format - we can't use the

    51 	// VFPRINTF original because it doesn't quite match and it might involve '*'

    52 	// to read field widths from VFPRINTF arguments.

    53 	fmt.Zero();

    54 	fmt.Append('%');

    55 	// flags?

    56 	if (width)

    57 		fmt.AppendNum(width);

    58 	if (prec>=0)

    59 		{

    60 		fmt.Append('.');

    61 		fmt.AppendNum(prec);

    62 		}

    63 	fmt.Append(fchar);

    64 	TRAPD(r,res.Format(fmt,d));

    65     UNUSED_VAR(r);

    66 	if (capitalE)

    67 		{

    68 		TInt pos=res.Locate('e');

    69 		if (pos!=KErrNotFound)

    70 			res[pos]='E';

    71 		}

    72 	return res.Length();

    73 	}

    74 }