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// Copyright (C) 2013 The Android Open Source Project
//
// Licensed 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.
import com.google.common.io.Files;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.analysis.util.CharArraySet;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.StringField;
import org.apache.lucene.document.TextField;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.index.IndexWriterConfig.OpenMode;
import org.apache.lucene.store.NIOFSDirectory;
import org.apache.lucene.util.Version;
import org.kohsuke.args4j.Argument;
import org.kohsuke.args4j.CmdLineException;
import org.kohsuke.args4j.CmdLineParser;
import org.kohsuke.args4j.Option;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.zip.ZipOutputStream;
public class DocIndexer {
private static final Version LUCENE_VERSION = Version.LUCENE_44;
private static final String DOC_FIELD = "doc";
private static final String URL_FIELD = "url";
private static final String TITLE_FIELD = "title";
@Option(name = "-z", usage = "output zip file")
private String zipFile;
@Option(name = "--prefix", usage = "prefix for the html filepath")
private String prefix = "";
@Option(name = "--in-ext", usage = "extension for input files")
private String inExt = ".txt";
@Option(name = "--out-ext", usage = "extension for output files")
private String outExt = ".html";
@Argument(usage = "input files")
private List<String> inputFiles = new ArrayList<String>();
private void invoke(String... parameters) throws IOException {
CmdLineParser parser = new CmdLineParser(this);
try {
parser.parseArgument(parameters);
if (inputFiles.isEmpty()) {
throw new CmdLineException(parser, "FAILED: input file missing");
}
} catch (CmdLineException e) {
System.err.println(e.getMessage());
parser.printUsage(System.err);
System.exit(1);
return;
}
File tmp = Files.createTempDir();
NIOFSDirectory directory = new NIOFSDirectory(tmp);
IndexWriterConfig config = new IndexWriterConfig(
LUCENE_VERSION,
new StandardAnalyzer(LUCENE_VERSION, CharArraySet.EMPTY_SET));
config.setOpenMode(OpenMode.CREATE);
IndexWriter iwriter = new IndexWriter(directory, config);
for (String inputFile : inputFiles) {
File file = new File(inputFile);
BufferedReader titleReader = new BufferedReader(
new InputStreamReader(new FileInputStream(file), "UTF-8"));
String title = titleReader.readLine();
if (title != null && title.startsWith("[[")) {
// Generally the first line of the txt is the title. In a few cases the
// first line is a "[[tag]]" and the second line is the title.
title = titleReader.readLine();
}
titleReader.close();
String outputFile = AsciiDoctor.mapInFileToOutFile(
inputFile, inExt, outExt);
FileReader reader = new FileReader(file);
Document doc = new Document();
doc.add(new TextField(DOC_FIELD, reader));
doc.add(new StringField(
URL_FIELD, prefix + outputFile, Field.Store.YES));
doc.add(new TextField(TITLE_FIELD, title, Field.Store.YES));
iwriter.addDocument(doc);
reader.close();
}
iwriter.close();
ZipOutputStream zip = new ZipOutputStream(new FileOutputStream(zipFile));
AsciiDoctor.zipDir(tmp, "", zip);
zip.close();
}
public static void main(String[] args) {
try {
new DocIndexer().invoke(args);
} catch (IOException e) {
System.err.println(e.getMessage());
System.exit(1);
}
}
}