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package bjc.utils.ioutils;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;
/**
* A database for describing mirrored characters.
*
* @author bjculkin
*
*/
public class MirrorDB {
private Map<String, String> mirrored;
/**
* Create a new database of mirrored characters.
*/
public MirrorDB() {
mirrored = new HashMap<>();
final InputStream stream = getClass().getResourceAsStream("/BidiMirrorDB.txt");
try (Scanner scn = new Scanner(stream)) {
String ln = "";
while (scn.hasNextLine()) {
ln = scn.nextLine();
if (ln.equals("")) {
continue;
}
if (ln.startsWith("#")) {
continue;
}
final int cp1 = Integer.parseInt(ln.substring(0, 4), 16);
final int cp2 = Integer.parseInt(ln.substring(6, 10), 16);
final char[] cpa1 = Character.toChars(cp1);
final char[] cpa2 = Character.toChars(cp2);
final String cps1 = new String(cpa1);
final String cps2 = new String(cpa2);
mirrored.put(cps1, cps2);
}
}
}
/**
* Check if a string can be mirrored.
*
* @param mir
* The string to check for mirroring.
* @return Whether or not the given string can be mirrored.
*/
public boolean canMirror(String mir) {
return mirrored.containsKey(mir);
}
/**
* Mirror a string.
*
* @param mir
* The string to mirror.
* @return The mirrored version of the string.
*/
public String mirror(String mir) {
return mirrored.get(mir);
}
}
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