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/*******************************************************************************
copyright: Copyright (c) 2007 Kris. All rights reserved
license: BSD style: $(LICENSE)
version: Feb 2007: Initial release
author: Kris
This is the Tango I18N gateway, which extends the basic Layout
module with support for cuture- and region-specific formatting
of numerics, date, time, and currency.
Use as a standalone formatter in the same manner as Layout, or
combine with other entities such as Stdout. To enable a French
Stdout, do the following:
---
Stdout.layout = new Locale (Culture.getCulture ("fr-FR"));
---
Note that Stdout is a shared entity, so every usage of it will
be affected by the above example. For applications supporting
multiple regions create multiple Locale instances instead, and
cache them in an appropriate manner.
In addition to region-specific currency, date and time, Locale
adds more sophisticated formatting option than Layout provides:
numeric digit placement using '#' formatting, for example, is
supported by Locale - along with placement of '$', '-', and '.'
regional-specifics.
Locale is currently utf8 only. Support for both Utf16 and utf32
may be enabled at a later time
******************************************************************************/
module tango.text.locale.Locale;
private import tango.text.locale.Core,
tango.text.locale.Convert;
private import tango.time.Time;
private import tango.text.convert.Layout;
public import tango.text.locale.Core : Culture;
/*******************************************************************************
Locale-enabled wrapper around tango.text.convert.Layout
*******************************************************************************/
public class Locale : Layout!(char)
{
private DateTimeFormat dateFormat;
private NumberFormat numberFormat;
/**********************************************************************
**********************************************************************/
this (IFormatService formatService = null)
{
numberFormat = NumberFormat.getInstance (formatService);
dateFormat = DateTimeFormat.getInstance (formatService);
}
/***********************************************************************
***********************************************************************/
protected override char[] unknown (char[] output, const(char)[] format, const(TypeInfo) type, Arg p)
{
switch (type.classinfo.name[9])
{
// Special case for Time.
case TypeCode.STRUCT:
if (type is typeid(Time))
return formatDateTime (output, *cast(Time*) p, format, dateFormat);
/* Bad dup */
return (cast()type).toString().dup; /* Cast courtesy of D2 */
default:
break;
}
return "{unhandled argument type: ".dup ~ (cast()type).toString() ~ '}'; /* Cast courtesy of D2 */
}
/**********************************************************************
**********************************************************************/
protected override char[] integer (char[] output, long v, const(char)[] alt, ulong mask=ulong.max, const(char)[] format=null)
{
return formatInteger (output, v, alt, numberFormat);
}
/**********************************************************************
**********************************************************************/
protected override char[] floater (char[] output, real v, const(char)[] format)
{
return formatDouble (output, v, format, numberFormat);
}
}
/*******************************************************************************
*******************************************************************************/
debug (Locale)
{
import tango.io.Console;
import tango.time.WallClock;
void main ()
{
auto layout = new Locale (Culture.getCulture ("fr-FR"));
Cout (layout ("{:D}", WallClock.now)) ();
}
}
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