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132
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1 /*******************************************************************************
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2
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3 copyright: Copyright (c) 2007 Kris. All rights reserved
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4
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5 license: BSD style: $(LICENSE)
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6
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7 version: Feb 2007: Initial release
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8
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9 author: Kris
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10
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11 This is the Tango I18N gateway, which extends the basic Layout
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12 module with support for cuture- and region-specific formatting
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13 of numerics, date, time, and currency.
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14
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15 Use as a standalone formatter in the same manner as Layout, or
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16 combine with other entities such as Stdout. To enable a French
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17 Stdout, do the following:
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18 ---
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19 Stdout.layout = new Locale (Culture.getCulture ("fr-FR"));
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20 ---
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21
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22 Note that Stdout is a shared entity, so every usage of it will
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23 be affected by the above example. For applications supporting
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24 multiple regions create multiple Locale instances instead, and
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25 cache them in an appropriate manner.
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26
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27 In addition to region-specific currency, date and time, Locale
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28 adds more sophisticated formatting option than Layout provides:
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29 numeric digit placement using '#' formatting, for example, is
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30 supported by Locale - along with placement of '$', '-', and '.'
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31 regional-specifics.
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32
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33 Locale is currently utf8 only. Support for both Utf16 and utf32
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34 may be enabled at a later time
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35
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36 ******************************************************************************/
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37
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38 module tango.text.locale.Locale;
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39
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40 private import tango.text.locale.Core,
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41 tango.text.locale.Convert;
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42
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43 private import tango.time.Time;
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44
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45 private import tango.text.convert.Layout;
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46
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47 public import tango.text.locale.Core : Culture;
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48
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49 /*******************************************************************************
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50
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51 Locale-enabled wrapper around tango.text.convert.Layout
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52
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53 *******************************************************************************/
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54
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55 public class Locale : Layout!(char)
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56 {
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57 private DateTimeFormat dateFormat;
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58 private NumberFormat numberFormat;
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59
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60 /**********************************************************************
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61
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62 **********************************************************************/
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63
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64 this (IFormatService formatService = null)
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65 {
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66 numberFormat = NumberFormat.getInstance (formatService);
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67 dateFormat = DateTimeFormat.getInstance (formatService);
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68 }
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69
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70 /***********************************************************************
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71
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72 ***********************************************************************/
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73
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74 protected override char[] unknown (char[] output, char[] format, TypeInfo type, Arg p)
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75 {
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76 switch (type.classinfo.name[9])
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77 {
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78 // Special case for Time.
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79 case TypeCode.STRUCT:
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80 if (type is typeid(Time))
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81 return formatDateTime (output, *cast(Time*) p, format, dateFormat);
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82
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83 return type.toString;
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84
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85 default:
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86 break;
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87 }
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88
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89 return "{unhandled argument type: " ~ type.toString ~ '}';
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90 }
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91
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92 /**********************************************************************
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93
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94 **********************************************************************/
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95
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96 protected override char[] integer (char[] output, long v, char[] alt, char format='d')
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97 {
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98 return formatInteger (output, v, alt, numberFormat);
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99 }
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100
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101 /**********************************************************************
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102
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103 **********************************************************************/
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104
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105 protected override char[] floater (char[] output, real v, char[] format)
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106 {
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107 return formatDouble (output, v, format, numberFormat);
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108 }
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109 }
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110
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111
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112 /*******************************************************************************
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113
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114 *******************************************************************************/
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115
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116 debug (Locale)
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117 {
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118 import tango.io.Console;
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119 import tango.time.WallClock;
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120
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121 void main ()
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122 {
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123 auto layout = new Locale (Culture.getCulture ("fr-FR"));
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124
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125 Cout (layout ("{:D}", WallClock.now)) ();
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126 }
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127 }
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