Coverage Report

Coverage Report - org.melati.poem.PoemLocale

Classes in this File

Line Coverage

Branch Coverage

Complexity

PoemLocale

88%

48/54

66%

12/18

2.273

 /*
  * $Source$
  * $Revision$
  *
  * Copyright (C) 2000 William Chesters
  *
  * Part of Melati (http://melati.org), a framework for the rapid
  * development of clean, maintainable web applications.
  *
  * Melati is free software; Permission is granted to copy, distribute
  * and/or modify this software under the terms either:
  *
  * a) the GNU General Public License as published by the Free Software
  *    Foundation; either version 2 of the License, or (at your option)
  *    any later version,
  *
  *    or
  *
  * b) any version of the Melati Software License, as published
  *    at http://melati.org
  *
  * You should have received a copy of the GNU General Public License and
  * the Melati Software License along with this program;
  * if not, write to the Free Software Foundation, Inc.,
  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA to obtain the
  * GNU General Public License and visit http://melati.org to obtain the
  * Melati Software License.
  *
  * Feel free to contact the Developers of Melati (http://melati.org),
  * if you would like to work out a different arrangement than the options
  * outlined here.  It is our intention to allow Melati to be used by as
  * wide an audience as possible.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * Contact details for copyright holder:
  *
  *     William Chesters <williamc At paneris.org>
  *     http://paneris.org/~williamc
  *     Obrechtstraat 114, 2517VX Den Haag, The Netherlands
  */
 
 package org.melati.poem;
 
 import java.util.HashMap;
 import java.util.Locale;
 import java.text.DateFormat;
 import java.text.DateFormatSymbols;
 
 import org.melati.poem.util.StringUtils;
 
 /**
  * A wrapper for a <code>Locale</code> for use within Melati.
  */
 public class PoemLocale {
 
   private static final HashMap<Locale, PoemLocale> localeCache = new HashMap<Locale, PoemLocale>();
 
   /** Default Locale: GB. */
   public static final PoemLocale HERE = new PoemLocale(Locale.UK);
 
   private final Locale locale;
   
   private final DateFormatSymbols dateFormatSymbols;
   private final String[] months, shortMonths;
   private final DateFormat[] dateFormats;
   private final DateFormat[] timestampFormats;
   
   /**
    * Creates a melati locale from a language tag as defined in RFC3066.
    * 
    * @param tag A language tag, for example, "en-gb"
    * @return A melati locale from the tag if we can parse it, otherwise null
    */
   public static PoemLocale fromLanguageTag(String tag) {
     String subtags[] = StringUtils.split(tag, '-');
 
     // if 1st subtag is 2 letters, then it's a 2 letter language code
     if (subtags.length > 0 && subtags[0].length() == 2) {
       Locale locale = null;
       // if 2nd subtag exists and is 2 letters, then it's a 2 letter county code
       if (subtags.length > 1 && subtags[1].length() == 2)
         locale = new Locale(subtags[0], subtags[1]);
       else
         locale = new Locale(subtags[0], "");
       return new PoemLocale(locale);
     }
     return null;
   } 
   
   public static PoemLocale from(Locale locale) {
     if (locale == null)
       throw new NullPointerException();
     PoemLocale it = localeCache.get(locale);
     if(it == null)
       localeCache.put(locale, new PoemLocale(locale));
     return localeCache.get(locale);
   }
 
   /**
    * Constructor given a non-null Locale. 
    * 
    * @param locale The Locale to base ours on.
    */
   public PoemLocale(Locale locale) {
     if (locale == null)
       throw new NullPointerException();
     this.locale = locale;
 
     dateFormatSymbols = new DateFormatSymbols(locale);
     months = dateFormatSymbols.getMonths();
     shortMonths = dateFormatSymbols.getShortMonths();
 
     dateFormats = new DateFormat[4]; // don't tell me this will break
     dateFormats[DateFormat.FULL] =
         DateFormat.getDateInstance(DateFormat.FULL, locale);
     dateFormats[DateFormat.LONG] =
         DateFormat.getDateInstance(DateFormat.LONG, locale);
     dateFormats[DateFormat.MEDIUM] =
         DateFormat.getDateInstance(DateFormat.MEDIUM, locale);
     dateFormats[DateFormat.SHORT] =
         DateFormat.getDateInstance(DateFormat.SHORT, locale);
 
     timestampFormats = new DateFormat[4]; // don't tell me this will break
     timestampFormats[DateFormat.FULL] =
         DateFormat.getDateTimeInstance(DateFormat.FULL, DateFormat.FULL,
                                        locale);
     timestampFormats[DateFormat.LONG] =
         DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG,
                                        locale);
     timestampFormats[DateFormat.MEDIUM] =
         DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.MEDIUM,
                                        locale);
     timestampFormats[DateFormat.SHORT] =
         DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT,
                                        locale);
   }
 
   /**
    * @return the Locale
    */
   public final Locale locale() {
     return locale;
   }
 
   /**
    * @param monthNum numeric month
    * @return full name of month
    */
   public String monthName(int monthNum) {
     return months[monthNum - 1];
   }
 
   /**
    * @param monthNum numeric month
    * @return short name of month
    */
   public String shortMonthName(int monthNum) {
     return shortMonths[monthNum - 1];
   }
 
   /**
    * @param style as defined in DateFormat
    * @return a format of that style
    */
   public DateFormat dateFormat(int style) {
     return dateFormats[style];
   }
 
   /**
    * @param style as defined in DateFormat
    * @return a format of that style
    */
   public DateFormat timestampFormat(int style) {
     return timestampFormats[style];
   }
 
   /**
    * Delegated to Locale.
    * 
    * @see java.util.Locale#hashCode()
    * {@inheritDoc}
    * @see java.lang.Object#hashCode()
    */
   public int hashCode() {
     return locale.hashCode();
   }
 
   /**
    * {@inheritDoc}
    * @see java.lang.Object#equals(java.lang.Object)
    */
   public boolean equals(Object o) {
     if (this == o)     // quick check
       return true;
     if (o instanceof PoemLocale) 
       return locale.equals(((PoemLocale)o).locale());
     else 
       return false;
   }
   
   /**
    * Delegated to Locale.
    * 
    * {@inheritDoc}
    * @see java.lang.Object#toString()
    */
   public String toString() {
     return locale.toString();
   }
 }

1		/*
2		* $Source$
3		* $Revision$
4		*
5		* Copyright (C) 2000 William Chesters
6		*
7		* Part of Melati (http://melati.org), a framework for the rapid
8		* development of clean, maintainable web applications.
9		*
10		* Melati is free software; Permission is granted to copy, distribute
11		* and/or modify this software under the terms either:
12		*
13		* a) the GNU General Public License as published by the Free Software
14		* Foundation; either version 2 of the License, or (at your option)
15		* any later version,
16		*
17		* or
18		*
19		* b) any version of the Melati Software License, as published
20		* at http://melati.org
21		*
22		* You should have received a copy of the GNU General Public License and
23		* the Melati Software License along with this program;
24		* if not, write to the Free Software Foundation, Inc.,
25		* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA to obtain the
26		* GNU General Public License and visit http://melati.org to obtain the
27		* Melati Software License.
28		*
29		* Feel free to contact the Developers of Melati (http://melati.org),
30		* if you would like to work out a different arrangement than the options
31		* outlined here. It is our intention to allow Melati to be used by as
32		* wide an audience as possible.
33		*
34		* This program is distributed in the hope that it will be useful,
35		* but WITHOUT ANY WARRANTY; without even the implied warranty of
36		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
37		* GNU General Public License for more details.
38		*
39		* Contact details for copyright holder:
40		*
41		* William Chesters <williamc At paneris.org>
42		* http://paneris.org/~williamc
43		* Obrechtstraat 114, 2517VX Den Haag, The Netherlands
44		*/
45
46		package org.melati.poem;
47
48		import java.util.HashMap;
49		import java.util.Locale;
50		import java.text.DateFormat;
51		import java.text.DateFormatSymbols;
52
53		import org.melati.poem.util.StringUtils;
54
55		/**
56		* A wrapper for a <code>Locale</code> for use within Melati.
57		*/
58		public class PoemLocale {
59
60	1	private static final HashMap<Locale, PoemLocale> localeCache = new HashMap<Locale, PoemLocale>();
61
62		/** Default Locale: GB. */
63	1	public static final PoemLocale HERE = new PoemLocale(Locale.UK);
64
65		private final Locale locale;
66
67		private final DateFormatSymbols dateFormatSymbols;
68		private final String[] months, shortMonths;
69		private final DateFormat[] dateFormats;
70		private final DateFormat[] timestampFormats;
71
72		/**
73		* Creates a melati locale from a language tag as defined in RFC3066.
74		*
75		* @param tag A language tag, for example, "en-gb"
76		* @return A melati locale from the tag if we can parse it, otherwise null
77		*/
78		public static PoemLocale fromLanguageTag(String tag) {
79	9	String subtags[] = StringUtils.split(tag, '-');
80
81		// if 1st subtag is 2 letters, then it's a 2 letter language code
82	9	if (subtags.length > 0 && subtags[0].length() == 2) {
83	8	Locale locale = null;
84		// if 2nd subtag exists and is 2 letters, then it's a 2 letter county code
85	8	if (subtags.length > 1 && subtags[1].length() == 2)
86	4	locale = new Locale(subtags[0], subtags[1]);
87		else
88	4	locale = new Locale(subtags[0], "");
89	8	return new PoemLocale(locale);
90		}
91	1	return null;
92		}
93
94		public static PoemLocale from(Locale locale) {
95	0	if (locale == null)
96	0	throw new NullPointerException();
97	0	PoemLocale it = localeCache.get(locale);
98	0	if(it == null)
99	0	localeCache.put(locale, new PoemLocale(locale));
100	0	return localeCache.get(locale);
101		}
102
103		/**
104		* Constructor given a non-null Locale.
105		*
106		* @param locale The Locale to base ours on.
107		*/
108	12	public PoemLocale(Locale locale) {
109	12	if (locale == null)
110	1	throw new NullPointerException();
111	11	this.locale = locale;
112
113	11	dateFormatSymbols = new DateFormatSymbols(locale);
114	11	months = dateFormatSymbols.getMonths();
115	11	shortMonths = dateFormatSymbols.getShortMonths();
116
117	11	dateFormats = new DateFormat[4]; // don't tell me this will break
118	11	dateFormats[DateFormat.FULL] =
119	11	DateFormat.getDateInstance(DateFormat.FULL, locale);
120	11	dateFormats[DateFormat.LONG] =
121	11	DateFormat.getDateInstance(DateFormat.LONG, locale);
122	11	dateFormats[DateFormat.MEDIUM] =
123	11	DateFormat.getDateInstance(DateFormat.MEDIUM, locale);
124	11	dateFormats[DateFormat.SHORT] =
125	11	DateFormat.getDateInstance(DateFormat.SHORT, locale);
126
127	11	timestampFormats = new DateFormat[4]; // don't tell me this will break
128	11	timestampFormats[DateFormat.FULL] =
129	11	DateFormat.getDateTimeInstance(DateFormat.FULL, DateFormat.FULL,
130		locale);
131	11	timestampFormats[DateFormat.LONG] =
132	11	DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG,
133		locale);
134	11	timestampFormats[DateFormat.MEDIUM] =
135	11	DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.MEDIUM,
136		locale);
137	11	timestampFormats[DateFormat.SHORT] =
138	11	DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT,
139		locale);
140	11	}
141
142		/**
143		* @return the Locale
144		*/
145		public final Locale locale() {
146	6	return locale;
147		}
148
149		/**
150		* @param monthNum numeric month
151		* @return full name of month
152		*/
153		public String monthName(int monthNum) {
154	1	return months[monthNum - 1];
155		}
156
157		/**
158		* @param monthNum numeric month
159		* @return short name of month
160		*/
161		public String shortMonthName(int monthNum) {
162	1	return shortMonths[monthNum - 1];
163		}
164
165		/**
166		* @param style as defined in DateFormat
167		* @return a format of that style
168		*/
169		public DateFormat dateFormat(int style) {
170	3	return dateFormats[style];
171		}
172
173		/**
174		* @param style as defined in DateFormat
175		* @return a format of that style
176		*/
177		public DateFormat timestampFormat(int style) {
178	4	return timestampFormats[style];
179		}
180
181		/**
182		* Delegated to Locale.
183		*
184		* @see java.util.Locale#hashCode()
185		* {@inheritDoc}
186		* @see java.lang.Object#hashCode()
187		*/
188		public int hashCode() {
189	2	return locale.hashCode();
190		}
191
192		/**
193		* {@inheritDoc}
194		* @see java.lang.Object#equals(java.lang.Object)
195		*/
196		public boolean equals(Object o) {
197	6	if (this == o) // quick check
198	1	return true;
199	5	if (o instanceof PoemLocale)
200	4	return locale.equals(((PoemLocale)o).locale());
201		else
202	1	return false;
203		}
204
205		/**
206		* Delegated to Locale.
207		*
208		* {@inheritDoc}
209		* @see java.lang.Object#toString()
210		*/
211		public String toString() {
212	7	return locale.toString();
213		}
214		}