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*) Tool to find out the percentage of letters in a text. First step to build a tool which detects the language a text is written in.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4010 6c8d7289-2bf4-0310-a012-ef5d649a1542
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source/de/anomic/language/languageDataExtractor.java
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source/de/anomic/language/languageDataExtractor.java
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// languageDataExtractor.java
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// -----------------------
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// part of YaCy
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// (C) by Michael Peter Christen; mc@anomic.de
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// first published on http://www.anomic.de
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// Frankfurt, Germany, 2004
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//
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// This File is contributed by Marc Nause
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//
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// $LastChangedDate: 2007-07-29 $
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// $LastChangedRevision: $
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// $LastChangedBy: low012 $
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// Using this software in any meaning (reading, learning, copying, compiling,
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// running) means that you agree that the Author(s) is (are) not responsible
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// for cost, loss of data or any harm that may be caused directly or indirectly
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// by usage of this softare or this documentation. The usage of this software
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// is on your own risk. The installation and usage (starting/running) of this
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// software may allow other people or application to access your computer and
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// any attached devices and is highly dependent on the configuration of the
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// software which must be done by the user of the software; the author(s) is
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// (are) also not responsible for proper configuration and usage of the
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// software, even if provoked by documentation provided together with
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// the software.
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//
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// Any changes to this file according to the GPL as documented in the file
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// gpl.txt aside this file in the shipment you received can be done to the
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// lines that follows this copyright notice here, but changes must not be
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// done inside the copyright notive above. A re-distribution must contain
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// the intact and unchanged copyright notice.
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// Contributions and changes to the program code must be marked as such.
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// This program creates a file with information about the percentage
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// in which letters are included in a text.
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//
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// The program can be started with the following arguments:
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//
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// input=filename name of the file the text is stored in
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// output=filename name of the file the data will be stored in
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// name=langugaename name of the language the text is written in
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// name=code code of the language the text is written in (e.g. en-GB)
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import java.io.BufferedReader;
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import java.io.BufferedWriter;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.InputStreamReader;
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import java.io.OutputStreamWriter;
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import java.io.IOException;
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import java.util.HashMap;
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import java.util.Iterator;
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public class languageDataExtractor {
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public static void main (String[] args) {
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BufferedReader inputFile = null;
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BufferedWriter outputFile = null;
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char key = 'x';
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Float fValue = new Float(0);
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HashMap map = new HashMap();
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int quantity = 0;
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Iterator mapiter;
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String code = "";
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String file = "";
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String input = "";
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String line = "";
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String name = "";
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String output = "";
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String sKey = "";
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//Program started with arguments 'input' or 'output'?
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if (args.length <= 4) {
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for(int i=0;i<args.length;i++){
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String temp = args[i];
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if (temp.startsWith("input=")) {
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input = temp.substring(6);
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} else if (temp.startsWith("output=")) {
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output = temp.substring(7);
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} else if (temp.startsWith("name=")) {
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name = temp.substring(5);
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} else if (temp.startsWith("code=")) {
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code = temp.substring(5);
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}
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}
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}
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//Ask user if arguments were not used when starting program.
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if ((input == "") || (output == "") || (name == "") || (code == "")) {
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BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
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try {
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if(input == "") {
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System.out.print("Name of file text is to be read from: ");
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input = in.readLine();
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}
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if(name == "") {
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System.out.print("Name of the language the text is written in: ");
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name = in.readLine();
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}
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if(code == "") {
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System.out.print("Code of the language the text is writen in (e.g. en-GB): ");
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code = in.readLine();
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}
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if(output == "") {
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System.out.print("Name of file data is to be written to: ");
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output = in.readLine();
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}
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}
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catch (IOException e) {
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System.out.println(e);
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System.out.println("Program aborted!");
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}
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}
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//Trying to open input file.
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try {
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inputFile = new BufferedReader(new InputStreamReader(new FileInputStream(input), "UTF8"));
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}
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catch (IOException e) {
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System.out.println("Error openinging file "+input);
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System.out.println("Program aborted! No data has been written!");
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System.exit(1);
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}
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//Trying to read from input file and put quantity of letters into map.
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try {
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while ((line = inputFile.readLine()) != null) {
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for(int i=0;i<line.length();i++){
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key = line.charAt(i);
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if(Character.isLetter(key)){
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key = Character.toLowerCase(key);
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sKey = "" + key;
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if (map.containsKey(sKey)) {
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fValue = new Float(Float.parseFloat(map.get(sKey).toString()) + 1);
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}
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else {
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fValue = new Float(1);
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}
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map.put(sKey, fValue);
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quantity++;
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}
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}
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}
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}
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catch (IOException e) {
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System.out.println("Error reading file "+input);
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System.out.println("Program aborted! No data has been written!");
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System.exit(1);
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}
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//Creating content for file.
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file = "<language name=\""+name+"\" code=\""+code+"\">\n";
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mapiter = map.keySet().iterator();
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while(mapiter.hasNext()){
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key = mapiter.next().toString().charAt(0);
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sKey = "" + key;
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file += "\n <letter>\n <name>"+key+"</name>\n <quantity>"+(Float.parseFloat(map.get(sKey).toString())/quantity*100)+"</quantity>\n <letter>\n";
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}
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file += "\n</language>";
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//Writing file.
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try {
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outputFile = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(output), "UTF8"));
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outputFile.write(file);
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outputFile.close();
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}
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catch (IOException e) {
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System.out.println("Error writing file "+input);
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System.out.println("Program aborted! No data has been written!");
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System.exit(1);
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}
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}
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}
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