/**
* Twitter Tools
*
* 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.
*/
package cc.twittertools.util;
import it.unimi.dsi.fastutil.longs.LongOpenHashSet;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.io.PrintStream;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.GnuParser;
import org.apache.commons.cli.HelpFormatter;
import org.apache.commons.cli.OptionBuilder;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.apache.log4j.Logger;
import cc.twittertools.corpus.data.JsonStatusCorpusReader;
import cc.twittertools.corpus.data.Status;
import cc.twittertools.corpus.data.StatusStream;
public class ExtractSubcollection {
private static final Logger LOG = Logger.getLogger(ExtractSubcollection.class);
private static final String COLLECTION_OPTION = "collection";
private static final String ID_OPTION = "tweetids";
@SuppressWarnings("static-access")
public static void main(String[] args) throws Exception {
Options options = new Options();
options.addOption(OptionBuilder.withArgName("dir").hasArg()
.withDescription("source collection directory").create(COLLECTION_OPTION));
options.addOption(OptionBuilder.withArgName("file").hasArg()
.withDescription("list of tweetids").create(ID_OPTION));
CommandLine cmdline = null;
CommandLineParser parser = new GnuParser();
try {
cmdline = parser.parse(options, args);
} catch (ParseException exp) {
System.err.println("Error parsing command line: " + exp.getMessage());
System.exit(-1);
}
if (!cmdline.hasOption(COLLECTION_OPTION) || !cmdline.hasOption(ID_OPTION)) {
HelpFormatter formatter = new HelpFormatter();
formatter.printHelp(ExtractSubcollection.class.getName(), options);
System.exit(-1);
}
String collectionPath = cmdline.getOptionValue(COLLECTION_OPTION);
LongOpenHashSet tweetids = new LongOpenHashSet();
File tweetidsFile = new File(cmdline.getOptionValue(ID_OPTION));
if (!tweetidsFile.exists()) {
System.err.println("Error: " + tweetidsFile + " does not exist!");
System.exit(-1);
}
LOG.info("Reading tweetids from " + tweetidsFile);
FileInputStream fin = new FileInputStream(tweetidsFile);
BufferedReader br = new BufferedReader(new InputStreamReader(fin));
String s;
while ((s = br.readLine()) != null) {
tweetids.add(Long.parseLong(s));
}
br.close();
fin.close();
LOG.info("Read " + tweetids.size() + " tweetids.");
File file = new File(collectionPath);
if (!file.exists()) {
System.err.println("Error: " + file + " does not exist!");
System.exit(-1);
}
PrintStream out = new PrintStream(System.out, true, "UTF-8");
StatusStream stream = new JsonStatusCorpusReader(file);
Status status;
while ((status = stream.next()) != null) {
if (tweetids.contains(status.getId())) {
out.println(status.getJsonObject().toString());
}
}
stream.close();
out.close();
}
}