ui/keycode.js


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/*!
 * jQuery UI Keycode @VERSION
 * http://jqueryui.com
 *
 * Copyright jQuery Foundation and other contributors
 * Released under the MIT license.
 * http://jquery.org/license
 */

//>>label: Keycode
//>>group: Core
//>>description: Provide keycodes as keynames
//>>docs: http://api.jqueryui.com/jQuery.ui.keyCode/

( function( factory ) {
	if ( typeof define === "function" && define.amd ) {

		// AMD. Register as an anonymous module.
		define( [ "jquery", "./version" ], factory );
	} else {

		// Browser globals
		factory( jQuery );
	}
} ( function( $ ) {
return $.ui.keyCode = {
	BACKSPACE: 8,
	COMMA: 188,
	DELETE: 46,
	DOWN: 40,
	END: 35,
	ENTER: 13,
	ESCAPE: 27,
	HOME: 36,
	LEFT: 37,
	PAGE_DOWN: 34,
	PAGE_UP: 33,
	PERIOD: 190,
	RIGHT: 39,
	SPACE: 32,
	TAB: 9,
	UP: 38
};

} ) );
/*
 * $Id: HyphenationTree.java,v 1.8 2003/03/06 22:19:15 jeremias Exp $
 * ============================================================================
 *                    The Apache Software License, Version 1.1
 * ============================================================================
 * 
 * Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modifica-
 * tion, are permitted provided that the following conditions are met:
 * 
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 
 * 3. The end-user documentation included with the redistribution, if any, must
 *    include the following acknowledgment: "This product includes software
 *    developed by the Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself, if
 *    and wherever such third-party acknowledgments normally appear.
 * 
 * 4. The names "FOP" and "Apache Software Foundation" must not be used to
 *    endorse or promote products derived from this software without prior
 *    written permission. For written permission, please contact
 *    apache@apache.org.
 * 
 * 5. Products derived from this software may not be called "Apache", nor may
 *    "Apache" appear in their name, without prior written permission of the
 *    Apache Software Foundation.
 * 
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
 * DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * ============================================================================
 * 
 * This software consists of voluntary contributions made by many individuals
 * on behalf of the Apache Software Foundation and was originally created by
 * James Tauber <jtauber@jtauber.com>. For more information on the Apache
 * Software Foundation, please see <http://www.apache.org/>.
 */ 
package org.apache.fop.layout.hyphenation;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.HashMap;

/**
 * This tree structure stores the hyphenation patterns in an efficient
 * way for fast lookup. It provides the provides the method to
 * hyphenate a word.
 *
 * @author Carlos Villegas <cav@uniscope.co.jp>
 */
public class HyphenationTree extends TernaryTree 
            implements PatternConsumer, Serializable {

    /**
     * value space: stores the inteletter values
     */
    protected ByteVector vspace;

    /**
     * This map stores hyphenation exceptions
     */
    protected HashMap stoplist;

    /**
     * This map stores the character classes
     */
    protected TernaryTree classmap;

    /**
     * Temporary map to store interletter values on pattern loading.
     */
    private transient TernaryTree ivalues;

    public HyphenationTree() {
        stoplist = new HashMap(23);    // usually a small table
        classmap = new TernaryTree();
        vspace = new ByteVector();
        vspace.alloc(1);    // this reserves index 0, which we don't use
    }

    /**
     * Packs the values by storing them in 4 bits, two values into a byte
     * Values range is from 0 to 9. We use zero as terminator,
     * so we'll add 1 to the value.
     * @param values a string of digits from '0' to '9' representing the
     * interletter values.
     * @return the index into the vspace array where the packed values
     * are stored.
     */
    protected int packValues(String values) {
        int i, n = values.length();
        int m = (n & 1) == 1 ? (n >> 1) + 2 : (n >> 1) + 1;
        int offset = vspace.alloc(m);
        byte[] va = vspace.getArray();
        for (i = 0; i < n; i++) {
            int j = i >> 1;
            byte v = (byte)((values.charAt(i) - '0' + 1) & 0x0f);
            if ((i & 1) == 1) {
                va[j + offset] = (byte)(va[j + offset] | v);
            } else {
                va[j + offset] = (byte)(v << 4);    // big endian
            }
        }
        va[m - 1 + offset] = 0;    // terminator
        return offset;
    }

    protected String unpackValues(int k) {
        StringBuffer buf = new StringBuffer();
        byte v = vspace.get(k++);
        while (v != 0) {
            char c = (char)((v >>> 4) - 1 + '0');
            buf.append(c);
            c = (char)(v & 0x0f);
            if (c == 0) {
                break;
            }
            c = (char)(c - 1 + '0');
            buf.append(c);
            v = vspace.get(k++);
        }
        return buf.toString();
    }

    /**
     * Read hyphenation patterns from an XML file.
     */
    public void loadPatterns(String filename) throws HyphenationException {
        PatternParser pp = new PatternParser(this);
        ivalues = new TernaryTree();

        pp.parse(filename);

        // patterns/values should be now in the tree
        // let's optimize a bit
        trimToSize();
        vspace.trimToSize();
        classmap.trimToSize();

        // get rid of the auxiliary map
        ivalues = null;
    }

    public String findPattern(String pat) {
        int k = super.find(pat);
        if (k >= 0) {
            return unpackValues(k);
        }
        return "";
    }

    /**
     * String compare, returns 0 if equal or
     * t is a substring of s
     */
    protected int hstrcmp(char[] s, int si, char[] t, int ti) {
        for (; s[si] == t[ti]; si++, ti++) {
            if (s[si] == 0) {
                return 0;
            }
        }
        if (t[ti] == 0) {
            return 0;
        }
        return s[si] - t[ti];
    }

    protected byte[] getValues(int k) {
        StringBuffer buf = new StringBuffer();
        byte v = vspace.get(k++);
        while (v != 0) {
            char c = (char)((v >>> 4) - 1);
            buf.append(c);
            c = (char)(v & 0x0f);
            if (c == 0) {
                break;
            }
            c = (char)(c - 1);
            buf.append(c);
            v = vspace.get(k++);
        }
        byte[] res = new byte[buf.length()];
        for (int i = 0; i < res.length; i++) {
            res[i] = (byte)buf.charAt(i);
        }
        return res;
    }

    /**
     * <p>Search for all possible partial matches of word starting
     * at index an update interletter values. In other words, it
     * does something like:</p>
     * <code>
     * for(i=0; i<patterns.length; i++) {
     * if ( word.substring(index).startsWidth(patterns[i]) )
     * update_interletter_values(patterns[i]);
     * }
     * </code>
     * <p>But it is done in an efficient way since the patterns are
     * stored in a ternary tree. In fact, this is the whole purpose
     * of having the tree: doing this search without having to test
     * every single pattern. The number of patterns for languages
     * such as English range from 4000 to 10000. Thus, doing thousands
     * of string comparisons for each word to hyphenate would be
     * really slow without the tree. The tradeoff is memory, but
     * using a ternary tree instead of a trie, almost halves the
     * the memory used by Lout or TeX. It's also faster than using
     * a hash table</p>
     * @param word null terminated word to match
     * @param index start index from word
     * @param il interletter values array to update
     */
    protected void searchPatterns(char[] word, int index, byte[] il) {
        byte[] values;
        int i = index;
        char p, q;
        char sp = word[i];
        p = root;

        while (p > 0 && p < sc.length) {
            if (sc[p] == 0xFFFF) {
                if (hstrcmp(word, i, kv.getArray(), lo[p]) == 0) {
                    values = getValues(eq[p]);    // data pointer is in eq[]
                    int j = index;
                    for (int k = 0; k < values.length; k++) {
                        if (j < il.length && values[k] > il[j]) {
                            il[j] = values[k];
                        }
                        j++;
                    }
                }
                return;
            }
            int d = sp - sc[p];
            if (d == 0) {
                if (sp == 0) {
                    break;
                }
                sp = word[++i];
                p = eq[p];
                q = p;

                // look for a pattern ending at this position by searching for
                // the null char ( splitchar == 0 )
                while (q > 0 && q < sc.length) {
                    if (sc[q] == 0xFFFF) {        // stop at compressed branch
                        break;
                    }
                    if (sc[q] == 0) {
                        values = getValues(eq[q]);
                        int j = index;
                        for (int k = 0; k < values.length; k++) {
                            if (j < il.length && values[k] > il[j]) {
                                il[j] = values[k];
                            }
                            j++;
                        }
                        break;
                    } else {
                        q = lo[q];

                        /**
                         * actually the code should be:
                         * q = sc[q] < 0 ? hi[q] : lo[q];
                         * but java chars are unsigned
                         */
                    }
                }
            } else {
                p = d < 0 ? lo[p] : hi[p];
            }
        }
    }

    /**
     * Hyphenate word and return a Hyphenation object.
     * @param word the word to be hyphenated
     * @param remainCharCount Minimum number of characters allowed
     * before the hyphenation point.
     * @param pushCharCount Minimum number of characters allowed after
     * the hyphenation point.
     * @return a {@link Hyphenation Hyphenation} object representing
     * the hyphenated word or null if word is not hyphenated.
     */
    public Hyphenation hyphenate(String word, int remainCharCount,
                                 int pushCharCount) {
        char[] w = word.toCharArray();
        return hyphenate(w, 0, w.length, remainCharCount, pushCharCount);
    }

    /**
     * Hyphenate word and return an array of hyphenation points.
     * @param w char array that contains the word
     * @param offset Offset to first character in word
     * @param len Length of word
     * @param remainCharCount Minimum number of characters allowed
     * before the hyphenation point.
     * @param pushCharCount Minimum number of characters allowed after
     * the hyphenation point.
     * @return a {@link Hyphenation Hyphenation} object representing
     * the hyphenated word or null if word is not hyphenated.
     */
    public Hyphenation hyphenate(char[] w, int offset, int len,
                                 int remainCharCount, int pushCharCount) {
        int i;
        char[] word = new char[len + 3];

        // normalize word
        char[] c = new char[2];
        for (i = 1; i <= len; i++) {
            c[0] = w[offset + i - 1];
            int nc = classmap.find(c, 0);
            if (nc < 0) {    // found a non-letter character, abort
                return null;
            }
            word[i] = (char)nc;
        }
        int[] result = new int[len + 1];
        int k = 0;

        // check exception list first
        String sw = new String(word, 1, len);
        if (stoplist.containsKey(sw)) {
            // assume only simple hyphens (Hyphen.pre="-", Hyphen.post = Hyphen.no = null)
            ArrayList hw = (ArrayList)stoplist.get(sw);
            int j = 0;
            for (i = 0; i < hw.size(); i++) {
                Object o = hw.get(i);
                if (o instanceof String) {
                    j += ((String)o).length();
                    if (j >= remainCharCount && j < (len - pushCharCount)) {
                        result[k++] = j;
                    }
                }
            }
        } else {
            // use algorithm to get hyphenation points
            word[0] = '.';                    // word start marker
            word[len + 1] = '.';              // word end marker
            word[len + 2] = 0;                // null terminated
            byte[] il = new byte[len + 3];    // initialized to zero
            for (i = 0; i < len + 1; i++) {
                searchPatterns(word, i, il);
            }

            // hyphenation points are located where interletter value is odd
            for (i = 0; i < len; i++) {
                if (((il[i + 1] & 1) == 1) && i >= remainCharCount
                        && i <= (len - pushCharCount)) {
                    result[k++] = i;
                }
            }
        }


        if (k > 0) {
            // trim result array
            int[] res = new int[k];
            System.arraycopy(result, 0, res, 0, k);
            return new Hyphenation(new String(w, offset, len), res);
        } else {
            return null;
        }
    }

    /**
     * Add a character class to the tree. It is used by
     * {@link PatternParser PatternParser} as callback to
     * add character classes. Character classes define the
     * valid word characters for hyphenation. If a word contains
     * a character not defined in any of the classes, it is not hyphenated.
     * It also defines a way to normalize the characters in order
     * to compare them with the stored patterns. Usually pattern
     * files use only lower case characters, in this case a class
     * for letter 'a', for example, should be defined as "aA", the first
     * character being the normalization char.
     */
    public void addClass(String chargroup) {
        if (chargroup.length() > 0) {
            char equivChar = chargroup.charAt(0);
            char[] key = new char[2];
            key[1] = 0;
            for (int i = 0; i < chargroup.length(); i++) {
                key[0] = chargroup.charAt(i);
                classmap.insert(key, 0, equivChar);
            }
        }
    }

    /**
     * Add an exception to the tree. It is used by
     * {@link PatternParser PatternParser} class as callback to
     * store the hyphenation exceptions.
     * @param word normalized word
     * @param hyphenatedword a vector of alternating strings and
     * {@link Hyphen hyphen} objects.
     */
    public void addException(String word, ArrayList hyphenatedword) {
        stoplist.put(word, hyphenatedword);
    }

    /**
     * Add a pattern to the tree. Mainly, to be used by
     * {@link PatternParser PatternParser} class as callback to
     * add a pattern to the tree.
     * @param pattern the hyphenation pattern
     * @param ivalue interletter weight values indicating the
     * desirability and priority of hyphenating at a given point
     * within the pattern. It should contain only digit characters.
     * (i.e. '0' to '9').
     */
    public void addPattern(String pattern, String ivalue) {
        int k = ivalues.find(ivalue);
        if (k <= 0) {
            k = packValues(ivalue);
            ivalues.insert(ivalue, (char)k);
        }
        insert(pattern, (char)k);
    }

    public void printStats() {
        System.out.println("Value space size = "
                           + Integer.toString(vspace.length()));
        super.printStats();

    }

    public static void main(String[] argv) throws Exception {
        HyphenationTree ht = null;
        int minCharCount = 2;
        BufferedReader in =
            new BufferedReader(new java.io.InputStreamReader(System.in));
        while (true) {
            System.out.print("l:\tload patterns from XML\n"
                    + "L:\tload patterns from serialized object\n"
                    + "s:\tset minimun character count\n"
                    + "w:\twrite hyphenation tree to object file\n"
                    + "h:\thyphenate\n"
                    + "f:\tfind pattern\n"
                    + "b:\tbenchmark\n"
                    + "q:\tquit\n\n"
                    + "Command:");
            String token = in.readLine().trim();
            if (token.equals("f")) {
                System.out.print("Pattern: ");
                token = in.readLine().trim();
                System.out.println("Values: " + ht.findPattern(token));
            } else if (token.equals("s")) {
                System.out.print("Minimun value: ");
                token = in.readLine().trim();
                minCharCount = Integer.parseInt(token);
            } else if (token.equals("l")) {
                ht = new HyphenationTree();
                System.out.print("XML file name: ");
                token = in.readLine().trim();
                ht.loadPatterns(token);
            } else if (token.equals("L")) {
                ObjectInputStream ois = null;
                System.out.print("Object file name: ");
                token = in.readLine().trim();
                try {
                    ois = new ObjectInputStream(new FileInputStream(token));
                    ht = (HyphenationTree)ois.readObject();
                } catch (Exception e) {
                    e.printStackTrace();
                } finally {
                    if (ois != null) {
                        try {
                            ois.close();
                        } catch (IOException e) {
                            //ignore
                        }
                    }
                }
            } else if (token.equals("w")) {
                System.out.print("Object file name: ");
                token = in.readLine().trim();
                ObjectOutputStream oos = null;
                try {
                    oos = new ObjectOutputStream(new FileOutputStream(token));
                    oos.writeObject(ht);
                } catch (Exception e) {
                    e.printStackTrace();
                } finally {
                    if (oos != null) {
                        try {
                            oos.flush();
                        } catch (IOException e) {
                            //ignore
                        }
                        try {
                            oos.close();
                        } catch (IOException e) {
                            //ignore
                        }
                    }
                }
            } else if (token.equals("h")) {
                System.out.print("Word: ");
                token = in.readLine().trim();
                System.out.print("Hyphenation points: ");
                System.out.println(ht.hyphenate(token, minCharCount,
                                                minCharCount));
            } else if (token.equals("b")) {
                if (ht == null) {
                    System.out.println("No patterns has been loaded.");
                    break;
                }
                System.out.print("Word list filename: ");
                token = in.readLine().trim();
                long starttime = 0;
                int counter = 0;
                try {
                    BufferedReader reader =
                        new BufferedReader(new FileReader(token));
                    String line;

                    starttime = System.currentTimeMillis();
                    while ((line = reader.readLine()) != null) {
                        // System.out.print("\nline: ");
                        Hyphenation hyp = ht.hyphenate(line, minCharCount,
                                                       minCharCount);
                        if (hyp != null) {
                            String hword = hyp.toString();
                            // System.out.println(line);
                            // System.out.println(hword);
                        } else {
                            // System.out.println("No hyphenation");
                        }
                        counter++;
                    }
                } catch (Exception ioe) {
                    System.out.println("Exception " + ioe);
                    ioe.printStackTrace();
                }
                long endtime = System.currentTimeMillis();
                long result = endtime - starttime;
                System.out.println(counter + " words in " + result
                                   + " Millisekunden hyphenated");

            } else if (token.equals("q")) {
                break;
            }
        }

    }

}