cc.twittertools.corpus.demo.ReadStatuses.java Source code

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Here is the source code for cc.twittertools.corpus.demo.ReadStatuses.java

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/**
 * 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.corpus.demo;

import java.io.File;
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.JsonStatusBlockReader;
import cc.twittertools.corpus.data.JsonStatusCorpusReader;
import cc.twittertools.corpus.data.Status;
import cc.twittertools.corpus.data.StatusStream;

/**
 * Sample program to illustrate how to work with {@link StatusStream}.
 */
public class ReadStatuses {
    private static final Logger LOG = Logger.getLogger(ReadStatuses.class);

    private ReadStatuses() {
    }

    private static final String INPUT_OPTION = "input";
    private static final String VERBOSE_OPTION = "verbose";
    private static final String DUMP_OPTION = "dump";

    @SuppressWarnings("static-access")
    public static void main(String[] args) throws Exception {
        Options options = new Options();
        options.addOption(OptionBuilder.withArgName("path").hasArg().withDescription("input directory or file")
                .create(INPUT_OPTION));
        options.addOption(VERBOSE_OPTION, false, "print logging output every 10000 tweets");
        options.addOption(DUMP_OPTION, false, "dump statuses");

        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(INPUT_OPTION)) {
            HelpFormatter formatter = new HelpFormatter();
            formatter.printHelp(ReadStatuses.class.getName(), options);
            System.exit(-1);
        }

        PrintStream out = new PrintStream(System.out, true, "UTF-8");

        StatusStream stream;
        // Figure out if we're reading from HTML SequenceFiles or JSON.
        File file = new File(cmdline.getOptionValue(INPUT_OPTION));
        if (!file.exists()) {
            System.err.println("Error: " + file + " does not exist!");
            System.exit(-1);
        }

        if (file.isDirectory()) {
            stream = new JsonStatusCorpusReader(file);
        } else {
            stream = new JsonStatusBlockReader(file);
        }

        int cnt = 0;
        Status status;
        while ((status = stream.next()) != null) {
            if (cmdline.hasOption(DUMP_OPTION)) {
                String text = status.getText();
                if (text != null) {
                    text = text.replaceAll("\\s+", " ");
                    text = text.replaceAll("\0", "");
                }
                out.println(String.format("%d\t%s\t%s\t%s", status.getId(), status.getScreenname(),
                        status.getCreatedAt(), text));
            }
            cnt++;
            if (cnt % 10000 == 0 && cmdline.hasOption(VERBOSE_OPTION)) {
                LOG.info(cnt + " statuses read");
            }
        }
        stream.close();
        LOG.info(String.format("Total of %s statuses read.", cnt));
    }
}