552 lines
18 KiB
Java
552 lines
18 KiB
Java
/**
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*******************************************************************************
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* Copyright (C) 1996-2001, International Business Machines Corporation and *
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* others. All Rights Reserved. *
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*******************************************************************************
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*
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* $Source: /xsrl/Nsvn/icu/unicodetools/com/ibm/text/UCD/BuildNames.java,v $
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* $Date: 2001/08/31 00:30:17 $
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* $Revision: 1.2 $
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*
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*******************************************************************************
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*/
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package com.ibm.text.UCD;
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import java.io.IOException;
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//import com.ibm.text.unicode.UInfo;
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import java.util.*;
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import java.io.*;
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//import java.text.*;
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import com.ibm.text.utility.*;
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public class BuildNames implements UCD_Types {
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static final boolean DEBUG = true;
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static UCD ucd;
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public static void main(String[] args) throws IOException {
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ucd = UCD.make();
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collectWords();
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}
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static Set words = new TreeSet(new LengthFirstComparator());
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static Set lines = new TreeSet(new LengthFirstComparator());
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static int[] letters = new int[128];
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static void stash(String word) {
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words.add(word);
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for (int i = 0; i < word.length(); ++i) {
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letters[word.charAt(i)]++;
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}
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}
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static String transform(String line) {
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StringBuffer result = new StringBuffer();
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boolean changed = false;
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for (int i = 0; i < line.length(); ++i) {
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char c = line.charAt(i);
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if (c == '-' || c == '<' || c == '>') {
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if (result.length() > 0 && result.charAt(result.length()-1) != ' ') result.append(' ');
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result.append(c);
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if (i + 1 < line.length() && line.charAt(i+1) != ' ') result.append(' ');
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changed = true;
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continue;
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}
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if ('a' <= c && c <= 'z') {
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result.append((char)(c - 'a' + 'A'));
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changed = true;
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continue;
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}
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if ('0' <= c && c <= '9') {
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result.append('*').append((char)(c - '0' + 'A'));
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changed = true;
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continue;
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}
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result.append(c);
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}
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if (!changed) return line;
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return result.toString().trim();
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}
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static void collectWords() throws IOException {
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System.out.println("Gathering data");
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//Counter counter = new Counter();
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String[] parts = new String[100];
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//int total = 0;
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int used = 0;
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int sum = 0;
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for (int i = 0; i < 0x10FFFF; ++i) {
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if (ucd.hasComputableName(i)) continue;
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String name = transform(ucd.getName(i));
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sum += name.length();
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used++;
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// replace numbers & letters
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int len = Utility.split(name, ' ', parts);
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for (int j = 0; j < len; ++j) {
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stash(parts[j]);
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}
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lines.add(name);
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}
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System.out.println("Overhead: " + (lastLink - used) + ", " + ((lastLink - used) * 100 / used) + "%");
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System.out.println("Strings: " + sum + ", " + (lastLink*4));
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System.out.println();
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System.out.println("Compacting Words");
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System.out.println();
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Iterator it = words.iterator();
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int i = 0;
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while (it.hasNext()) {
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String s = (String) it.next();
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int test = CompactName.addWord(s);
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String round = CompactName.stringFromToken(test);
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boolean goesRound = round.equals(s);
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if (false || !goesRound) System.out.println("Compacting: '" + s + "': " + i++ + "(" + CompactName.lastToken + ")"
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+ (goesRound ? ": NO RT: '" + round + "'" : ""));
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}
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System.out.println();
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System.out.println("Compacting Lines");
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System.out.println();
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CompactName.startLines();
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it = lines.iterator();
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i = 0;
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while (it.hasNext()) {
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String s = (String) it.next();
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if (s.equals("< BELL >")) {
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System.out.println("DEBUG");
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}
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int test = CompactName.addLine(s);
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String round = CompactName.stringFromToken(test);
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boolean goesRound = round.equals(s);
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if (false || !goesRound) System.out.println("Compacting: '" + s + "': " + i++ + "(" + CompactName.lastToken + ")"
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+ (!goesRound ? ": NO RT: '" + round + "'" : ""));
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}
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/*System.out.println("Printing Compact Forms");
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for (int i = 0; i < CompactName.lastToken; ++i) {
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String s = CompactName.stringFromToken(i);
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System.out.println(i + ": '" + s + "'");
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}*/
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System.out.println("Strings: " + sum
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+ ", " + (CompactName.spacedMinimum*4)
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+ ", " + (CompactName.lastToken*4)
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);
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}
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/*
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Set stuff = new TreeSet();
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for (int i = 0; i < letters.length; ++i) {
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if (letters[i] != 0) {
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stuff.add(new Integer((letters[i] << 8) + i));
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}
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}
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it = stuff.iterator();
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while (it.hasNext()) {
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int in = ((Integer) it.next()).intValue();
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System.out.println((char)(in & 0xFF) + ":\t" + String.valueOf(in >> 8));
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}
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int r = addString(name);
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if (!DEBUG && !rname.equals(name)) {
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System.out.println("\tNo Round Trip: '" + rname + "'");
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}
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*/
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static Map stringToInt = new HashMap();
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static Map intToString = new HashMap();
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static final int[] remap = new int['Z'+1];
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static final int maxToken;
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static {
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int counter = 1;
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remap[' '] = counter++;
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remap['-'] = counter++;
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remap['>'] = counter++;
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remap['<'] = counter++;
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for (int i = 'A'; i <= 'Z'; ++i) {
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remap[i] = counter++;
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}
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for (int i = '0'; i <= '9'; ++i) {
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remap[i] = counter++;
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}
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maxToken = counter;
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}
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static final String[] unmap = new String[maxToken];
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static {
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unmap[0] = "";
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for (int i = 0; i < remap.length; ++i) {
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int x = remap[i];
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if (x != 0) unmap[x] = String.valueOf((char)i);
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}
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}
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static int[] links = new int[40000];
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static final int linkStart = 0;
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static int lastLink = 0;
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static final int LITERAL_BOUND = 0x7FFF - maxToken * maxToken;
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static boolean isLiteral(int i) {
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return (i & 0x7FFF) > LITERAL_BOUND;
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}
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static String lookup(int i) {
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String result;
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boolean trailingSpace = false;
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if ((i & 0x8000) != 0) {
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i ^= 0x8000;
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trailingSpace = true;
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}
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if (i > LITERAL_BOUND) {
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i = i - LITERAL_BOUND;
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int first = i / maxToken;
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int second = i % maxToken;
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result = unmap[first] + unmap[second];
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} else {
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int value = links[i];
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int lead = value >>> 16;
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int trail = value & 0xFFFF;
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//if (DEBUG) System.out.println("lead: " + lead + ", trail: " + trail);
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result = lookup(lead) + lookup(trail);
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}
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if (trailingSpace) result += ' ';
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if (DEBUG) System.out.println("token: " + i + " => '" + result + "'");
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return result;
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}
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static int getInt(String s) {
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if (s.length() < 3) {
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if (s.length() == 0) return 0;
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int first = s.charAt(0);
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int second = s.length() > 1 ? s.charAt(1) : 0;
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return LITERAL_BOUND + (remap[first] * maxToken + remap[second]);
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}
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Object in = stringToInt.get(s);
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if (in == null) return -1;
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return ((Integer)in).intValue();
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}
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static int putString(String s, int lead, int trail) {
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Object in = stringToInt.get(s);
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if (in != null) throw new IllegalArgumentException();
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int value = (lead << 16) + (trail & 0xFFFF);
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int result = lastLink;
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links[lastLink++] = value;
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if (DEBUG) {
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System.out.println("'" + s + "', link[" + result + "] = lead: " + lead + ", trail: " + trail);
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String roundTrip = lookup(result);
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if (!roundTrip.equals(s)) {
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System.out.println("\t*** No Round Trip: '" + roundTrip + "'");
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}
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}
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stringToInt.put(s, new Integer(result));
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return result;
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}
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// s cannot have a trailing space. Must be <,>,-,SPACE,0-9,A-Z
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static int addString(String s) {
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int result = getInt(s);
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if (result != -1) return result;
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int limit = s.length() - 1;
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int bestLen = 0;
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int best_i = 0;
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int bestSpaceLen = 0;
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int bestSpace_i = 0;
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int lastSpace = -1;
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int spaceBits;
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int endOfFirst;
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// invariant. We break after a space if there is one.
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for (int i = 1; i < limit; ++i) {
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char c = s.charAt(i-1);
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spaceBits = 0;
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endOfFirst = i;
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if (c == ' ') {
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lastSpace = i;
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endOfFirst--;
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spaceBits = 0x8000;
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}
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String firstPart = s.substring(0, endOfFirst);
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String lastPart = s.substring(i);
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if (firstPart.equals("<START OF ")) {
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System.out.println("HUH");
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}
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int lead = getInt(firstPart);
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int trail = getInt(lastPart);
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if (lead >= 0 && trail >= 0) { // if both match, return immediately with pair
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if (DEBUG) System.out.println(s + " => '" + firstPart + (spaceBits != 0 ? "*" : "")
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+ "' # '" + lastPart + "' MATCH BOTH");
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return putString(s, spaceBits | lead, trail);
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}
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if (!isLiteral(lead)) {
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if (i > bestLen) {
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bestLen = i;
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best_i = i;
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}
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if (i > bestSpaceLen && c == ' ') {
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bestSpaceLen = i;
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bestSpace_i = i + 1;
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}
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}
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int end_i = s.length() - i;
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if (!isLiteral(trail)) {
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if (end_i > bestLen) {
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bestLen = end_i;
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best_i = i;
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}
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if (end_i > bestSpaceLen && c == ' ') {
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bestSpaceLen = end_i;
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bestSpace_i = i + 1;
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}
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}
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}
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if (lastSpace >= 0) {
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bestLen = bestSpaceLen;
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best_i = bestSpace_i;
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}
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spaceBits = 0;
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if (bestLen > 0) { // if one matches, recurse -- and return pair
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endOfFirst = best_i;
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if (lastSpace > 0) {
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--endOfFirst;
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spaceBits = 0x8000;
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}
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String firstPart = s.substring(0, endOfFirst);
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String lastPart = s.substring(best_i);
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int lead = getInt(firstPart);
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int trail = getInt(lastPart);
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if (lead >= 0) {
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if (DEBUG) System.out.println(s + " => '" + firstPart + (spaceBits != 0 ? "*" : "")
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+ "' # '" + lastPart + "' MATCH FIRST");
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return putString(s, spaceBits | lead, addString(lastPart));
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} else {
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if (DEBUG) System.out.println(s + " => '" + firstPart + (spaceBits != 0 ? "*" : "")
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+ "' # '" + lastPart + "' MATCH SECOND");
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return putString(s, spaceBits | addString(firstPart), trail);
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}
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}
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// otherwise, we failed to find anything. Then break before the last word, if there is one
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// otherwise break in the middle (but at even value)
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if (lastSpace >= 0) {
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best_i = lastSpace;
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endOfFirst = lastSpace - 1;
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spaceBits = 0x8000;
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} else {
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endOfFirst = best_i = ((s.length() + 1) / 4) * 2;
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}
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String firstPart = s.substring(0, endOfFirst);
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String lastPart = s.substring(best_i);
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if (DEBUG) System.out.println(s + " => '" + firstPart + (spaceBits != 0 ? "*" : "")
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+ "' # '" + lastPart + "' FALLBACK");
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return putString(s, spaceBits | addString(firstPart), addString(lastPart));
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}
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/*
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static int addCompression(String s) {
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Object in = stringToInt.get(s);
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if (in != null) return ((Integer) in).intValue();
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// find best match, recursively
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int bestBreak = -1;
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boolean pickFirst = false;
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for (int i = 1; i < s.length() - 1; ++i) {
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char c = s.charAt(i);
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if (c == ' ' || c == '-') {
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Object pos1 = stringToInt.get(s.substring(0,i+1));
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//Object pos23 = stringToInt.get(s..substring(i));
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if (pos2 >= 0 && pos3 >= 0) {
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fullToCompressed.put(value, new Integer(index + reserved));
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continue main;
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}
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if (pos2 >= 0) {
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if (k > bestBreak) {
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bestBreak = k;
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pickFirst = true;
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}
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} else if (pos3 >= 0) {
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if (value.length() - k > bestBreak) {
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bestBreak = k;
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pickFirst = false;
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}
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}
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}
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}
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}
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}
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static void gatherData() throws IOException {
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System.out.println("Gathering data");
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Counter counter = new Counter();
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String[] parts = new String[100];
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String[] parts2 = new String[100];
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int total = 0;
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for (int i = 0; i < 0x10FFFF; ++i) {
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//if ((i & 0xFF) == 0) System.out.println(Utility.hex(i));
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if (!ucd.isRepresented(i)) continue;
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String s = ucd.getName(i);
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total += s.length();
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int len = Utility.split(s, ' ', parts);
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for (int j = 0; j < len; ++j) {
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if (parts[j].indexOf('-') >= 0) {
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// hyphen stuff
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int len2 = Utility.split(parts[j], '-', parts2);
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for (int k = 0; k < len2; ++k) {
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if (k == len2 - 1) {
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counter.add(parts2[k] + '-');
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} else {
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counter.add(parts2[k] + " ");
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}
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}
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} else {
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// normal
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counter.add(parts[j] + " ");
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}
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}
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}
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System.out.println("Sorting data");
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Map m = counter.extract();
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System.out.println("Printing data");
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PrintWriter log = new PrintWriter(
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new BufferedWriter(
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new OutputStreamWriter(
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new FileOutputStream(GEN_DIR + "NameCompression.txt")),
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32*1024));
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log.println("total: " + total);
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Iterator it = m.keySet().iterator();
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String mondo = "";
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int i = 0;
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int strTotal = 0;
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int index = 0;
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Map fullToCompressed = new HashMap();
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String mondoIndex = "";
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main:
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while (it.hasNext()) {
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index++;
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if ((i & 255) == 0) System.out.println("#" + i);
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Counter.RWInteger key = (Counter.RWInteger) it.next();
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String value = (String)m.get(key);
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log.println(i++ + ": " + key + ": \"" + value + "\"");
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strTotal += value.length();
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// first 128 are the highest frequency, inc. space
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if (index < 128 - SINGLES) {
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mondo += value;
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fullToCompressed.put(value, new String((char)(index + reserved)));
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continue;
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}
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int pos = mondo.indexOf(value);
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if (pos >= 0) {
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// try splitting!
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int bestBreak = -1;
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boolean pickFirst = false;
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if (value.length() > 2) for (int k = 1; k < value.length()-1; ++k) {
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int pos2 = mondo.indexOf(value.substring(0,k) + " ");
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int pos3 = mondo.indexOf(value.substring(k));
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if (pos2 >= 0 && pos3 >= 0) {
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fullToCompressed.put(value, new Integer(index + reserved));
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continue main;
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}
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if (pos2 >= 0) {
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if (k > bestBreak) {
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bestBreak = k;
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pickFirst = true;
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}
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} else if (pos3 >= 0) {
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if (value.length() - k > bestBreak) {
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bestBreak = k;
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pickFirst = false;
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}
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}
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}
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if (bestBreak > 0) {
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if (pickFirst) {
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mondo += value.substring(bestBreak);
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} else {
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mondo += value.substring(0, bestBreak) + " ";
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}
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} else {
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mondo += value;
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}
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}
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// high bit on, means 2 bytes, look in array
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}
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log.println("strTotal: " + strTotal);
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log.println("mondo: " + mondo.length());
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int k = 80;
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for (; k < mondo.length(); k += 80) {
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log.println(mondo.substring(k-80, k));
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}
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log.println(mondo.substring(k-80)); // last line
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log.close();
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}
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static int indexOf(StringBuffer target, String source) {
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int targetLen = target.length() - source.length();
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main:
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for (int i = 0; i <= targetLen; ++i) {
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for (int j = 0; j < source.length(); ++j) {
|
|
if (target.charAt(i) != source.charAt(j)) continue main;
|
|
}
|
|
return i;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
static final int SINGLES = 26 + 10 + 2;
|
|
*/
|
|
|
|
/*
|
|
static String decode(int x) {
|
|
if (x < SINGLES) {
|
|
if (x < 26) return String.valueOf(x + 'A');
|
|
if (x < 36) return String.valueOf(x - 26 + '0');
|
|
if (x == 36) return "-";
|
|
return " ";
|
|
}
|
|
if (x < binaryLimit) {
|
|
x =
|
|
*/
|
|
}
|