diff options
Diffstat (limited to 'src')
3 files changed, 184 insertions, 29 deletions
diff --git a/src/org/madore/android/unicodeMap/UnicodeCharacter.java b/src/org/madore/android/unicodeMap/UnicodeCharacter.java index c499921..fb68169 100644 --- a/src/org/madore/android/unicodeMap/UnicodeCharacter.java +++ b/src/org/madore/android/unicodeMap/UnicodeCharacter.java @@ -6,10 +6,12 @@ public class UnicodeCharacter { protected final int codePoint; protected final String name; + protected final String category; - public UnicodeCharacter(int codePoint, String name) { + public UnicodeCharacter(int codePoint, String name, String category) { this.codePoint = codePoint; this.name = name; + this.category = category; } public int getCodePoint() { diff --git a/src/org/madore/android/unicodeMap/UnicodeDatabase.java b/src/org/madore/android/unicodeMap/UnicodeDatabase.java new file mode 100644 index 0000000..9e809f2 --- /dev/null +++ b/src/org/madore/android/unicodeMap/UnicodeDatabase.java @@ -0,0 +1,174 @@ +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); + } + +} diff --git a/src/org/madore/android/unicodeMap/UnicodeMapActivity.java b/src/org/madore/android/unicodeMap/UnicodeMapActivity.java index 6caad15..f4c7dc6 100644 --- a/src/org/madore/android/unicodeMap/UnicodeMapActivity.java +++ b/src/org/madore/android/unicodeMap/UnicodeMapActivity.java @@ -2,10 +2,6 @@ package org.madore.android.unicodeMap; import java.util.List; import java.util.ArrayList; -import java.io.InputStreamReader; -import java.io.BufferedReader; -import java.io.IOException; -import java.io.UnsupportedEncodingException; import android.content.Context; import android.content.res.AssetManager; import android.os.Bundle; @@ -14,36 +10,19 @@ import android.widget.*; import android.text.ClipboardManager; import android.app.ListActivity; -public class UnicodeMapActivity extends ListActivity { +public final class UnicodeMapActivity extends ListActivity { - static final List<UnicodeCharacter> list = new ArrayList<UnicodeCharacter>(12); - - protected void parseUnicodeData() { - AssetManager amgr = getAssets(); - try { - BufferedReader rd - = new BufferedReader(new InputStreamReader(amgr.open("UnicodeData.txt"), - "US-ASCII")); - String line; - while ( ( line = rd.readLine() ) != null ) { - String[] bits = line.split(";"); - int codePoint = Integer.parseInt(bits[0], 16); - String name = bits[1]; - if ( name.charAt(0) != '<' ) - list.add(new UnicodeCharacter(codePoint, name)); - } - } catch (UnsupportedEncodingException e) { - throw new AssertionError("US-ASCII encoding unsupported"); - } catch (IOException e) { - throw new RuntimeException(e); - } - } + protected UnicodeDatabase db; + protected List<UnicodeCharacter> list; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); - parseUnicodeData(); + this.db = new UnicodeDatabase(getApplicationContext()); + this.list = new ArrayList<UnicodeCharacter>(db.countRange(0,1024)); + for ( UnicodeCharacter ch : db.getRange(0,1024) ) + list.add(ch); final ClipboardManager cmgr = (ClipboardManager)getSystemService(Context.CLIPBOARD_SERVICE); setListAdapter(new ArrayAdapter<UnicodeCharacter>(this, R.layout.list_item, list)); |