Source Code Cross Referenced for Resource.java in  » 6.0-JDK-Modules » j2me » com » sun » midp » i18n » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules » j2me » com.sun.midp.i18n 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         *   
003:         *
004:         * Copyright  1990-2007 Sun Microsystems, Inc. All Rights Reserved.
005:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
006:         * 
007:         * This program is free software; you can redistribute it and/or
008:         * modify it under the terms of the GNU General Public License version
009:         * 2 only, as published by the Free Software Foundation.
010:         * 
011:         * This program is distributed in the hope that it will be useful, but
012:         * WITHOUT ANY WARRANTY; without even the implied warranty of
013:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014:         * General Public License version 2 for more details (a copy is
015:         * included at /legal/license.txt).
016:         * 
017:         * You should have received a copy of the GNU General Public License
018:         * version 2 along with this work; if not, write to the Free Software
019:         * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
020:         * 02110-1301 USA
021:         * 
022:         * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
023:         * Clara, CA 95054 or visit www.sun.com if you need additional
024:         * information or have any questions.
025:         */
026:
027:        package com.sun.midp.i18n;
028:
029:        import java.util.Hashtable;
030:        import com.sun.midp.main.Configuration;
031:        import com.sun.midp.l10n.*;
032:        import com.sun.midp.log.Logging;
033:        import com.sun.midp.log.LogChannels;
034:
035:        /**
036:         * The Resource class retrieves the locale specific values such
037:         * as label strings and date formats from the locale specific
038:         * subclasses of com.sun.midp.i18n.ResourceBundle class. 
039:         * The default locale is assumed to be en_US, meaning,
040:         * in the absence of any locale information being specified, en_US
041:         * will be assumed as the default locale.
042:         *
043:         * A subclass of ResourceBundle namely, 
044:         * com.sun.midp.l10n.LocalizedStrings 
045:         * is the default localization file, for a default locale of en_US.
046:         * This also acts as a template for future localization and is 
047:         * easily localizable. The new localized file created should be 
048:         * accompanied with a locale name following an underscore: for
049:         * example, a German one would be named "LocalizedStrings_de".
050:         * In this way, as many related locale-specific classes as needed
051:         * can be provided.
052:         * 
053:         * The location of such locale-specific classes is expected to be
054:         * "com.sun.midp.l10n".  
055:         */
056:        abstract public class Resource {
057:            /** Local handle to the current Resource structure. */
058:            private static ResourceBundle res = null;
059:
060:            static {
061:                res = null;
062:                String loc = Configuration.getProperty("microedition.locale");
063:
064:                if ((loc == null) || (loc.equals("en-US"))) {
065:                    // the default case
066:                    res = (ResourceBundle) new LocalizedStrings();
067:                } else {
068:                    String cls = "com.sun.midp.l10n.LocalizedStrings";
069:                    /* 
070:                     * This only checks for the first '-' in the locale, and
071:                     * convert to '_' for Class.forName() to work.
072:                     */
073:                    int hyphen;
074:                    if ((hyphen = loc.indexOf('-')) != -1) {
075:                        StringBuffer tmploc = new StringBuffer(loc);
076:                        tmploc.setCharAt(hyphen, '_');
077:                        loc = tmploc.toString();
078:                    }
079:
080:                    while (true) {
081:                        try {
082:                            Class c = Class.forName(cls + "_" + loc);
083:                            res = (ResourceBundle) c.newInstance();
084:                        } catch (Throwable t) {
085:                        }
086:                        if (res == null) {
087:                            int pos = loc.lastIndexOf('_');
088:                            if (pos != -1) {
089:                                loc = loc.substring(0, pos);
090:                            } else {
091:                                break;
092:                            }
093:                        } else {
094:                            break;
095:                        }
096:                    }
097:                }
098:
099:                if (res == null) {
100:                    if (Logging.REPORT_LEVEL <= Logging.ERROR) {
101:                        Logging.report(Logging.ERROR, LogChannels.LC_I18N,
102:                                "Just can't proceed! Resource is NULL!!");
103:                    }
104:
105:                    // Porting suggestion:
106:                    // System should quit MIDP runtime since resource is 
107:                    // not available. 
108:                }
109:            }
110:
111:            /**
112:             * Returns a localized string for the integer key.
113:             * @param key used to search the value pair.
114:             * @return the requested localized resource string.
115:             */
116:            public static String getString(int key) {
117:                return res.getString(key);
118:            }
119:
120:            /**
121:             * Returns a localized string for the argument string after substituting
122:             * values for the "%d" tokens in the localized string, where "d" is 1-9
123:             * and representing a values 0-8 in an array. The tokens can be in any
124:             * order in the string. If the localized String is not found
125:             * the key is used as the localized string. If a "%" is not followed by
126:             * 1-9 then the "%" is dropped but the next char is put directly into the
127:             * output string, so "%%" will be "%" in the output and not count as part
128:             * of a token. Another example would be that "%a" would be just be "a".
129:             * <p>
130:             * For example, given "%2 had a little %1." and {"lamb", "Mary"} and there
131:             * is no localized string for the key, the result would be:
132:             * <p>
133:             * <blockquote>"Mary had a little lamb."</blockquote>
134:             *
135:             * @param key an original string in the source code with optional
136:             *            substitution tokens
137:             * @param values values to substitute for the tokens in the resource
138:             * @return value of named resource with the tokens substituted
139:             * @exception ArrayIndexOutOfBoundsException if there are not enough values
140:             *            to substitute
141:             */
142:            public static String getString(int key, String[] values) {
143:                boolean tokenMarkerFound = false;
144:                StringBuffer output;
145:                char currentChar;
146:                int length;
147:                String str = getString(key);
148:
149:                if (str == null) {
150:                    return null;
151:                }
152:
153:                length = str.length();
154:                output = new StringBuffer(length * 2); // try to avoid resizing
155:
156:                for (int i = 0; i < length; i++) {
157:                    currentChar = str.charAt(i);
158:
159:                    if (tokenMarkerFound) {
160:                        if (currentChar < '1' || currentChar > '9') {
161:                            // covers the "%%" case
162:                            output.append(currentChar);
163:                        } else {
164:                            // substitute a value, "1" is index 0 into the value array
165:                            output.append(values[currentChar - '1']);
166:                        }
167:
168:                        tokenMarkerFound = false;
169:                    } else if (currentChar == '%') {
170:                        tokenMarkerFound = true;
171:                    } else {
172:                        output.append(currentChar);
173:                    }
174:                }
175:
176:                return output.toString();
177:            }
178:
179:            /**
180:             * Returns a locale-specific formatted date string.  By default,
181:             * it will return like "Fri, 05 Dec 2000".
182:             *
183:             * @param dayOfWeek day of week
184:             * @param date date
185:             * @param month month
186:             * @param year year
187:             * @return formatted date string
188:             */
189:            public static String getDateString(String dayOfWeek, String date,
190:                    String month, String year) {
191:                return res.getLocalizedDateString(dayOfWeek, date, month, year);
192:            }
193:
194:            /**
195:             * Returns a locale-specific formatted time string.  By default,
196:             * it will return like "10:05:59 PM".
197:             *
198:             * @param hour hour
199:             * @param min minute
200:             * @param sec second
201:             * @param ampm AM or PM
202:             * @return formatted time string
203:             */
204:            public static String getTimeString(String hour, String min,
205:                    String sec, String ampm) {
206:                return res.getLocalizedTimeString(hour, min, sec, ampm);
207:            }
208:
209:            /**
210:             * Returns a locale-specific formatted date and time string.  By
211:             * default, it will like return "Fri, 05 Dec 2000 10:05:59 PM".
212:             *
213:             * @param dayOfWeek day of week
214:             * @param date date
215:             * @param month month
216:             * @param year year
217:             * @param hour hour
218:             * @param min minute
219:             * @param sec second
220:             * @param ampm AM or PM 
221:             * @return formatted time and date string
222:             */
223:            public static String getDateTimeString(String dayOfWeek,
224:                    String date, String month, String year, String hour,
225:                    String min, String sec, String ampm) {
226:                return res.getLocalizedDateTimeString(dayOfWeek, date, month,
227:                        year, hour, min, sec, ampm);
228:            }
229:
230:            /**
231:             * Returns what the first day of the week is; e.g., Sunday in US,
232:             * Monday in France.
233:             * @return numeric value for first day of week
234:             */
235:            public static int getFirstDayOfWeek() {
236:                return res.getLocalizedFirstDayOfWeek();
237:            }
238:
239:            /**
240:             * Returns whether the AM_PM field comes after the time field 
241:             * or not.  
242:             * @return true, if AM/PM is after the time field.
243:             */
244:            public static boolean isAMPMafterTime() {
245:                return res.isLocalizedAMPMafterTime();
246:            }
247:        }
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