1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
package org.madore.android.unicodeMap;
import java.util.Iterator;
import java.util.NoSuchElementException;
import java.io.InputStreamReader;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.sql.SQLException;
import android.content.Context;
import android.content.res.AssetManager;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteStatement;
import android.database.sqlite.SQLiteOpenHelper;
public class UnicodeDatabase {
protected static final String DATABASE_NAME = "unicode.db";
protected static final int DATABASE_VERSION = 1;
protected static final String UNICODE_TABLE_NAME = "unicode";
protected static class DatabaseInit extends SQLiteOpenHelper {
final Context context;
DatabaseInit(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
this.context = context;
}
protected void parseUnicodeData(SQLiteDatabase db) {
AssetManager amgr = context.getAssets();
try {
BufferedReader rd
= new BufferedReader(new InputStreamReader(amgr.open("UnicodeData.txt"),
"US-ASCII"));
SQLiteStatement cmd
= db.compileStatement("INSERT INTO "+UNICODE_TABLE_NAME
+" VALUES ( ? , ? , ? )");
String line;
while ( ( line = rd.readLine() ) != null ) {
String[] fields = line.split(";");
int codePoint = Integer.parseInt(fields[0], 16);
String name = fields[1];
String category = fields[2];
if ( name.charAt(0) == '<' )
continue;
cmd.bindLong(1, codePoint);
cmd.bindString(2, name);
cmd.bindString(3, category);
cmd.execute();
}
} catch (UnsupportedEncodingException e) {
throw new AssertionError("US-ASCII encoding unsupported");
} catch (IOException e) {
throw new RuntimeException(e);
}
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL("CREATE TABLE "+UNICODE_TABLE_NAME+" ( "
+"id INTEGER PRIMARY KEY , "
+"name TEXT , "
+"category TEXT )");
parseUnicodeData(db);
}
@Override
public void onUpgrade(SQLiteDatabase db,
int oldVersion, int newVersion) {
db.execSQL("DROP TABLE IF EXISTS "+UNICODE_TABLE_NAME);
onCreate(db);
}
}
SQLiteDatabase db;
public UnicodeDatabase(Context context) {
DatabaseInit dbinit = new DatabaseInit(context);
if ( true )
db = dbinit.getReadableDatabase();
else {
db = dbinit.getWritableDatabase();
db.execSQL("DELETE FROM "+UNICODE_TABLE_NAME);
dbinit.parseUnicodeData(db);
}
}
protected final static String[] queryColumns = { "id", "name", "category" };
public UnicodeCharacter getSingle(int codePoint) {
final Cursor c
= db.query(UNICODE_TABLE_NAME, queryColumns,
"id=?",
new String[] { Integer.toString(codePoint) },
null, null, null, null);
UnicodeCharacter ch;
if ( c.getCount() > 0 ) {
c.moveToFirst();
ch = new UnicodeCharacter(c.getInt(0),
c.getString(1), c.getString(2));
} else
ch = null;
c.close();
return ch;
}
protected final static String[] countColumns = { "count(*)" };
public int countRange(int from, int to) {
final Cursor c
= db.query(UNICODE_TABLE_NAME, countColumns,
"id >= ? AND id < ?",
new String[] { Integer.toString(from),
Integer.toString(to) },
null, null, null, null);
if ( c.getCount() != 1 )
throw new AssertionError("\"SELECT count(*)\" returned no result");
c.moveToFirst();
int cnt = c.getInt(0);
c.close();
return cnt;
}
private static class CursorIterable
implements Iterable<UnicodeCharacter> {
protected final Cursor c;
public CursorIterable(Cursor c) {
this.c = c;
}
public Iterator<UnicodeCharacter> iterator() {
final boolean hasData = c.getCount() > 0;
if ( hasData )
c.moveToFirst();
else
c.close();
return (new Iterator<UnicodeCharacter>() {
boolean hasNext = hasData;
public boolean hasNext() { return hasNext; }
public UnicodeCharacter next() {
if ( hasNext ) {
UnicodeCharacter ch
= new UnicodeCharacter(c.getInt(0), c.getString(1),
c.getString(2));
if ( c.isLast() ) {
hasNext = false;
c.close();
} else
c.moveToNext();
return ch;
} else
throw new NoSuchElementException();
}
public void remove() {
throw new UnsupportedOperationException();
}
});
}
}
public Iterable<UnicodeCharacter> getRange(int from, int to) {
final Cursor c
= db.query(UNICODE_TABLE_NAME, queryColumns,
"id >= ? AND id < ?",
new String[] { Integer.toString(from),
Integer.toString(to) },
null, null, null, null);
return new CursorIterable(c);
}
}
|
