fitnesse.FitNesseVersion Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of fitnesse Show documentation

The fully integrated standalone wiki, and acceptance testing framework.

There is a newer version: 20241026

// Copyright (C) 2003,2004,2005 by Object Mentor, Inc. All rights reserved.
// Released under the terms of the GNU General Public License version 2 or later.
package fitnesse;

import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.Charset;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 * Represents a version of a fitnesse release. Versions have the following format: v20100103[suffix]
 * I.e. the suffix is optional.
 **/
public class FitNesseVersion {
  private static final Logger LOG = Logger.getLogger(FitNesseVersion.class.getName());
  private static final String UNKNOWN_VERSION = "vUnknown";

  private final String version;

  public FitNesseVersion() {
    this(versionFromMetaInf());
  }

  public FitNesseVersion(String version) {
    this.version = version;
  }

  private static String versionFromMetaInf() {
    InputStream is = null;
    try {
      is = FitNesseVersion.class.getResourceAsStream("/META-INF/FitNesseVersion.txt");
      if (is == null) {
        return UNKNOWN_VERSION;
      }
      byte[] b = new byte[64];
      int len = is.read(b);
      return new String(b, 0, len, Charset.forName("ISO-8859-1"));
    } catch (IOException e) {
      LOG.log(Level.WARNING, "Unable to read FitNesse version", e);
      return UNKNOWN_VERSION;
    } finally {
      if (is != null) {
        try {
          is.close();
        } catch (IOException e) {
          LOG.log(Level.SEVERE, "Unable to close FitNesse version file (should never happen)", e);
        }
      }
    }
  }

  @Override
  public String toString() {
    return version;
  }

  static Long dateVersion(String fullTextVersion) {
    try {
      return Long.parseLong(fullTextVersion.substring(1, Math.min(9, fullTextVersion.length())));
    } catch (Exception e) {
      throw new IllegalArgumentException("Unable to extract date version from " + fullTextVersion, e);
    }
  }

  /**
   * Compare this instance's version against the specified one.
   * Note: the suffixes are ignored when comparing versions
   * @param requiredVersion minimum required version
   * @return true if this version is not younger than the specified one, suffix excluded
   **/
  public boolean isAtLeast(String requiredVersion) {
    long thisVersion = dateVersion(version);
    long otherVersion = dateVersion(requiredVersion);
    return thisVersion >= otherVersion;
  }
}