//Copyright 2001-2005 FreeHEP.
package org.freehep.graphics2d.font;
/**
* Lookup class provides conversion between different encodings and character
* tables using character name, encoding index, and unicode. In order to add new
* tables original code should be modified.
*
* @author Sami Kama
* @version $Id: Lookup.java,v 1.4 2009-08-17 21:44:44 murkle Exp $
*/
public class Lookup {
private static Lookup instance;
private CharTable[] tables;
public static Lookup getInstance() {
if (instance == null) {
instance = new Lookup();
}
return (instance);
}
private int ntables = 8;
private Lookup() {
tables = new CharTable[ntables];
tables[0] = new Symbol();
tables[1] = new Expert();
tables[2] = new Zapfdingbats();
tables[3] = new STDLatin();
tables[4] = new MACLatin();
tables[5] = new WINLatin();
tables[6] = new PDFLatin();
tables[7] = new ISOLatin();
}
/**
* Converts a name to unicode. This method takes name of the character and
* returns character as a unicode character.
*
* @return requested unicode character.
*/
public char toUnicode(String name) {
for (int i = 0; i < ntables; i++) {
char uc = tables[i].toUnicode(name);
if (uc != '\uffff') {
return (uc);
}
}
return ('\uffff');
}
/**
* Converts a unicode character to name.
*
* @return requested character name.
*/
public String toName(char uc) {
for (int i = 0; i < ntables; i++) {
String name = tables[i].toName(uc);
if (name != null) {
return (name);
}
}
return (null);
}
/**
* Converts a unicode character to name.
*
* @return requested character name.
*/
public String toName(Character uc) {
for (int i = 0; i < ntables; i++) {
String name = tables[i].toName(uc);
if (name != null) {
return (name);
}
}
return (null);
}
/**
* Gives the requested encoding table Valid table names can be requested
* with a call to
*
* @see #getTableNames().
*
* @return requested encoding.
*/
public CharTable getTable(String tableName) {
for (int i = 0; i < ntables; i++) {
String tblName = tables[i].getEncoding() + tables[i].getName();
if (tblName.equalsIgnoreCase(tableName)) {
return (tables[i]);
}
}
return (null);
}
/**
* Gives the total number of tables included in the file
*
* @return number of tables
*/
public int getNumberOfTables() {
return (ntables);
}
/**
* Gives the names of tables that can be used in a string array.
*
* @return An array of String[] containing the table names
*/
public String[] getTableNames() {
String[] tblnames = new String[ntables];
for (int i = 0; i < ntables; i++) {
tblnames[i] = tables[i].getEncoding() + tables[i].getName();
}
return tblnames;
}
}