/**
*******************************************************************************
* Copyright (C) 1996-2001, International Business Machines Corporation and    *
* others. All Rights Reserved.                                                *
*******************************************************************************
*
* $Source: /xsrl/Nsvn/icu/unicodetools/com/ibm/text/UCD/TestNameUniqueness.java,v $
* $Date: 2004/10/14 17:54:56 $
* $Revision: 1.3 $
*
*******************************************************************************
*/

package com.ibm.text.UCD;

import java.util.*;
import java.io.*;
import java.text.DateFormat;
import java.text.SimpleDateFormat;

import com.ibm.text.utility.*;
import com.ibm.icu.dev.test.util.BagFormatter;
import com.ibm.icu.dev.test.util.UnicodeProperty;
import com.ibm.icu.text.UnicodeSet;

public class TestNameUniqueness implements UCD_Types {
    
    public static void main(String[] args) throws Exception {
        checkNameList();
        // new TestNameUniqueness().checkNames();
    }
    
    Map names = new HashMap();
    int[] charCount = new int[128];
    int[] samples = new int[128];
    
    public static class NameIterator {
        int fileCount = -1;
        String line;
        BufferedReader br;
        String[] pieces = new String[3];
        /**
         * @return null when done
         */
        static String[][] files = {
                {"C:\\DATA\\", "pdam1040630.lst"},
				{"C:\\DATA\\UCD\\4.1.0-Update\\", "NamedCompositeEntities-4.1.0d2.txt"}
        };
        
        public String next() {
            while (true) {
            try {
				if (br != null) line = br.readLine();
				if (line == null) {
				    fileCount++;
				    br = BagFormatter.openReader(files[fileCount][0], files[fileCount][1], "ISO-8859-1");
				    line = br.readLine();
				}
			} catch (IOException e) {}
            if (line == null) return null;
            if (line.length() == 0) continue;
            if (fileCount == 0) {
                char c = line.charAt(0);
                // skip if doesn't start with hex digit
                if (!(('0' <= c && c <= '9') || ('A' <= c && c <= 'F'))) continue;
                Utility.split(line,'\t',pieces,true);
                Utility.split(pieces[1],'(',pieces,true);
                Utility.split(pieces[0],'*',pieces,true);
                return pieces[0];
            } else {
            	Utility.split(line,';',pieces,true); 
                return pieces[1];
            }
            //throw new IllegalArgumentException("Illegal file type");
           }
        }
    }
    
    public static void checkNameList() throws IOException {
        Map map = new HashMap();
        NameIterator nameIterator = new NameIterator();
        int lineCount = 0;
        while (true) {
        	String name = nameIterator.next();
            if (name == null) break;
            String key;
			try {
                if (name.startsWith("<")) key = name;
				else key = UnicodeProperty.toNameSkeleton(name);
			} catch (RuntimeException e) {
				System.out.println("Error on " + nameIterator.line);
                throw e;
			}
			Object value = map.get(key);
            if (value != null && !key.startsWith("<")) {
                System.out.println("*!*!*!* Collision at " + key + " between: ");
                System.out.println("\t" + value);
                System.out.println("\t" + nameIterator.line);
            	//throw new IllegalArgumentException();
            }
            map.put(key, nameIterator.line);
            if (nameIterator.line.startsWith("116C")
                || nameIterator.line.startsWith("1180")
                || name.indexOf('-') >= 0 
                || (lineCount++ % 1000) == 0) {
                System.out.println("[" + lineCount + "]\t" + nameIterator.line + "\t" + name);
                System.out.println("\t" + name);
                System.out.println("\t" + key);
            }
        }
    }
    
    void checkNames() throws IOException {
        PrintWriter out = Utility.openPrintWriter("name_uniqueness.txt", Utility.LATIN1_WINDOWS);
        try {
            out.println("Collisions");
            out.println();
            for (int cp = 0; cp < 0x10FFFF; ++cp) {
                Utility.dot(cp);
                if (!Default.ucd().isAllocated(cp)) continue;
                if (Default.ucd().hasComputableName(cp)) continue;
                int cat = Default.ucd().getCategory(cp);
                if (cat == Cc) continue;
                
                String name = Default.ucd().getName(cp);
                String processedName = processName(cp, name);
                Integer existing = (Integer) names.get(processedName);
                if (existing != null) {
                    out.println("Collision between: "
                        + Default.ucd().getCodeAndName(existing.intValue())
                        + ", " + Default.ucd().getCodeAndName(cp));
                } else {
                    names.put(processedName, new Integer(cp));
                }
            }
            out.println();
            out.println("Samples");
            out.println();
            for (int i = 0; i < charCount.length; ++i) {
                int count = charCount[i];
                if (count == 0) continue;
                String sampleName = Default.ucd().getCodeAndName(samples[i]);
                out.println(count + "\t'" + ((char)i)
                    + "'\t" + Default.ucd().getCodeAndName(samples[i])
                    + "\t=>\t" + processName(samples[i], Default.ucd().getName(samples[i])));
            }
            out.println();
            out.println("Name Samples");
            out.println();
            for (int i = 0; i < 256; ++i) {
                int cat = Default.ucd().getCategory(i);
                if (cat == Cc) continue;
                out.println(Default.ucd().getCodeAndName(i)
                    + "\t=>\t" + processName(i, Default.ucd().getName(i)));
            }
        } finally {
            out.close();
        }
    }
    
    static final String[][] replacements = {
        //{"SMALL LETTER", ""},
        {"LETTER", ""},
        {"CHARACTER", ""},
        {"DIGIT", ""},
        {"SIGN", ""},
        //{"WITH", ""},
    };
    
    StringBuffer processNamesBuffer = new StringBuffer();
    
    String processName(int codePoint, String name) {
        name = Utility.replace(name, replacements);
        processNamesBuffer.setLength(0);
        for (int i = 0; i < name.length(); ++i) {
            char c = name.charAt(i);
            ++charCount[c];
            if (samples[c] == 0) samples[c] = codePoint;
            if ('A' <= c && c <= 'Z'
                || '0' <= c && c <= '9') processNamesBuffer.append(c);
            
        }
        if (processNamesBuffer.length() == name.length()) return name;
        return processNamesBuffer.toString();
    }
}