/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package opennlp.tools.cmdline.tokenizer;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import opennlp.tools.cmdline.CLI;
import opennlp.tools.cmdline.CmdLineTool;
import opennlp.tools.cmdline.CmdLineUtil;
import opennlp.tools.cmdline.PerformanceMonitor;
import opennlp.tools.cmdline.TerminateToolException;
import opennlp.tools.tokenize.Detokenizer;
import opennlp.tools.tokenize.Detokenizer.DetokenizationOperation;
import opennlp.tools.tokenize.DictionaryDetokenizer;
import opennlp.tools.tokenize.WhitespaceTokenizer;
import opennlp.tools.util.ObjectStream;
import opennlp.tools.util.PlainTextByLineStream;
public final class DictionaryDetokenizerTool implements CmdLineTool {
public String getName() {
return "DictionaryDetokenizer";
}
public String getShortDescription() {
return "";
}
public String getHelp() {
return "Usage: " + CLI.CMD + " " + getName() + " detokenizerDictionary";
}
public static String detokenize(String tokens[], DetokenizationOperation operations[]) {
if (tokens.length != operations.length)
throw new IllegalArgumentException("tokens and operations array must have same length!");
StringBuilder untokenizedString = new StringBuilder();
for (int i = 0; i < tokens.length; i++) {
// attach token to string buffer
untokenizedString.append(tokens[i]);
boolean isAppendSpace;
// if this token is the last token do not attach a space
if (i + 1 == operations.length) {
isAppendSpace = false;
}
// if next token move left, no space after this token,
// its safe to access next token
else if (operations[i + 1].equals(DetokenizationOperation.MERGE_TO_LEFT)) {
isAppendSpace = false;
}
// if this token is move right, no space
else if (operations[i].equals(DetokenizationOperation.MERGE_TO_RIGHT)) {
isAppendSpace = false;
}
else {
isAppendSpace = true;
}
if (isAppendSpace)
untokenizedString.append(' ');
}
return untokenizedString.toString();
}
public void run(String[] args) {
if (args.length != 1) {
System.out.println(getHelp());
throw new TerminateToolException(1);
}
Detokenizer detokenizer = new DictionaryDetokenizer(
new DetokenizationDictionaryLoader().load(new File(args[0])));
ObjectStream<String> tokenizedLineStream =
new PlainTextByLineStream(new InputStreamReader(System.in));
PerformanceMonitor perfMon = new PerformanceMonitor(System.err, "sent");
perfMon.start();
try {
String tokenizedLine;
while ((tokenizedLine = tokenizedLineStream.read()) != null) {
// white space tokenize line
String tokens[] = WhitespaceTokenizer.INSTANCE.tokenize(tokenizedLine);
DetokenizationOperation operations[] = detokenizer.detokenize(tokens);
System.out.println(detokenize(tokens, operations));
perfMon.incrementCounter();
}
}
catch (IOException e) {
CmdLineUtil.handleStdinIoError(e);
}
perfMon.stopAndPrintFinalResult();
}
}