1/*
2 * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26import  java.io.BufferedWriter;
27import  java.io.File;
28import  java.io.FileWriter;
29import  java.io.IOException;
30import  java.util.HashMap;
31import  java.util.List;
32import  java.util.Map;
33import  java.util.Set;
34import  java.util.SortedMap;
35import  java.util.TreeMap;
36import  java.util.TreeSet;
37
38/**
39 * <code>Simple</code> generates TimeZoneData, which had been used as internal
40 * data of TimeZone before J2SDK1.3.
41 * Since J2SDK1.4 doesn't need TimeZoneData, this class is for maintenance
42 * of old JDK release.
43 */
44class Simple extends BackEnd {
45
46    /**
47     * Zone records which are applied for given year.
48     */
49    private static Map<String,ZoneRec> lastZoneRecs = new HashMap<>();
50
51    /**
52     * Rule records which are applied for given year.
53     */
54    private static Map<String,List<RuleRec>> lastRules = new TreeMap<>();
55
56    /**
57     * zone IDs sorted by their GMT offsets. If zone's GMT
58     * offset will change in the future, its last known offset is
59     * used.
60     */
61    private SortedMap<Integer, Set<String>> zonesByOffset = new TreeMap<>();
62
63    /**
64     * Sets last Rule records and Zone records for given timezone to
65     * each Map.
66     *
67     * @param tz Timezone object for each zone
68     * @return always 0
69     */
70    int processZoneinfo(Timezone tz) {
71        String zonename = tz.getName();
72
73        lastRules.put(zonename, tz.getLastRules());
74        lastZoneRecs.put(zonename, tz.getLastZoneRec());
75
76        // Populate zonesByOffset. (Zones that will change their
77        // GMT offsets are also added to zonesByOffset here.)
78        int lastKnownOffset = tz.getRawOffset();
79        Set<String> set = zonesByOffset.get(lastKnownOffset);
80        if (set == null) {
81            set = new TreeSet<>();
82            zonesByOffset.put(lastKnownOffset, set);
83        }
84        set.add(zonename);
85
86        return 0;
87    }
88
89    /**
90     * Generates TimeZoneData to output SimpleTimeZone data.
91     * @param map Mappings object which is generated by {@link Main#compile}.
92     * @return 0 if no error occurred, otherwise 1.
93     */
94    int generateSrc(Mappings map) {
95        try {
96            File outD = new File(Main.getOutputDir());
97            outD.mkdirs();
98
99            FileWriter fw =
100                new FileWriter(new File(outD, "TimeZoneData.java"), false);
101            BufferedWriter out = new BufferedWriter(fw);
102
103            out.write("import java.util.SimpleTimeZone;\n\n");
104            out.write("    static SimpleTimeZone zones[] = {\n");
105
106            Map<String,String> a = map.getAliases();
107            List<Integer> roi = map.getRawOffsetsIndex();
108            List<Set<String>> roit = map.getRawOffsetsIndexTable();
109
110            int index = 0;
111            for (int offset : zonesByOffset.keySet()) {
112                int o = roi.get(index);
113                Set<String> set = zonesByOffset.get(offset);
114                if (offset == o) {
115                    // Merge aliases into zonesByOffset
116                    set.addAll(roit.get(index));
117                }
118                index++;
119
120                for (String key : set) {
121                    ZoneRec zrec;
122                    String realname;
123                    List<RuleRec> stz;
124                    if ((realname = a.get(key)) != null) {
125                        // if this alias is not targeted, ignore it.
126                        if (!Zone.isTargetZone(key)) {
127                            continue;
128                        }
129                        stz = lastRules.get(realname);
130                        zrec = lastZoneRecs.get(realname);
131                    } else {
132                        stz = lastRules.get(key);
133                        zrec = lastZoneRecs.get(key);
134                    }
135
136                    out.write("\t//--------------------------------------------------------------------\n");
137                    String s = Time.toFormedString(offset);
138                    out.write("\tnew SimpleTimeZone(" +
139                        Time.toFormedString(offset) + ", \"" + key + "\"");
140                    if (realname != null) {
141                        out.write(" /* " + realname + " */");
142                    }
143
144                    if (stz == null) {
145                        out.write("),\n");
146                    } else {
147                        RuleRec rr0 = stz.get(0);
148                        RuleRec rr1 = stz.get(1);
149
150                        out.write(",\n\t  " + Month.toString(rr0.getMonthNum()) +
151                                  ", " + rr0.getDay().getDayForSimpleTimeZone() + ", " +
152                                  rr0.getDay().getDayOfWeekForSimpleTimeZone() + ", " +
153                                  Time.toFormedString((int)rr0.getTime().getTime()) + ", " +
154                                  rr0.getTime().getTypeForSimpleTimeZone() + ",\n" +
155
156                                  "\t  " + Month.toString(rr1.getMonthNum()) + ", " +
157                                  rr1.getDay().getDayForSimpleTimeZone() + ", " +
158                                  rr1.getDay().getDayOfWeekForSimpleTimeZone() + ", " +
159                                  Time.toFormedString((int)rr1.getTime().getTime())+ ", " +
160                                  rr1.getTime().getTypeForSimpleTimeZone() + ",\n" +
161
162                                  "\t  " + Time.toFormedString(rr0.getSave()) + "),\n");
163
164                        out.write("\t// " + rr0.getLine() + "\n");
165                        out.write("\t// " + rr1.getLine() + "\n");
166                    }
167
168                    String zline = zrec.getLine();
169                    if (zline.indexOf("Zone") == -1) {
170                        zline = "Zone " + key + "\t" + zline.trim();
171                    }
172                    out.write("\t// " + zline + "\n");
173                }
174            }
175            out.write("    };\n");
176
177            out.close();
178            fw.close();
179        } catch(IOException e) {
180            Main.panic("IO error: "+e.getMessage());
181            return 1;
182        }
183
184        return 0;
185    }
186}
187