Package org.knopflerfish.bundle.log.window.impl

Source Code of org.knopflerfish.bundle.log.window.impl.Util

/*
* Copyright (c) 2003-2010, KNOPFLERFISH project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
*   notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above
*   copyright notice, this list of conditions and the following
*   disclaimer in the documentation and/or other materials
*   provided with the distribution.
*
* - Neither the name of the KNOPFLERFISH project nor the names of its
*   contributors may be used to endorse or promote products derived
*   from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/

package org.knopflerfish.bundle.log.window.impl;

import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.text.SimpleDateFormat;
import java.util.Date;

import org.knopflerfish.util.Text;
import org.osgi.framework.Bundle;
import org.osgi.framework.ServiceReference;
import org.osgi.service.log.LogEntry;


public class Util {

public static String shortLocation(String s) {
    int ix = s.lastIndexOf("/");

    // handle eclipse extended location directory syntax
    if(s.endsWith("/")) {
      ix = s.lastIndexOf("/", ix - 1);
    }

    if(ix == -1) {
      ix = s.lastIndexOf("\\");
    }
    if(ix != -1) {
      return s.substring(ix + 1);
    }
    return s;
  }

  public static String shortName(Bundle b) {
    String s = b.getLocation();
    if (null==s) {
      // Remote, uninstalled bundle may give null location.
      return String.valueOf(b.getBundleId());
    }
    int ix = s.lastIndexOf("/");
    if(ix == -1) ix = s.lastIndexOf("\\");
    if(ix != -1) {
      s = s.substring(ix + 1);
    }
    if(s.endsWith(".jar")) {
      s = s.substring(0, s.length() - 4);
    }
    return s;
  }

  public static String getBundleName(Bundle b) {
    String s = getHeader(b, "Bundle-Name", "");
    if(s == null || "".equals(s) || s.startsWith("%")) {
      s = shortLocation(b.getLocation());
    }

    return s;
  }

  public static String getHeader(Bundle b, String name) {
    return getHeader(b, name, null);
  }

  public static String getHeader(Bundle b, String name, String def) {
    String s = b != null
      ? (String)b.getHeaders().get(name)
      : def;

    return s;
  }


  public static String toHTML(ExtLogEntry e) {
    StringBuffer sb = new StringBuffer();

    sb.append("<html>");

    sb.append("<table border=0 width=\"100%\">");
    sb.append("<tr bgcolor=\"#eeeeee\">");

    sb.append("<td width=50 valign=top align=left bgcolor=\"#eeeeee\">" +
              fontify(e.getId() +
                      ", "+ shortName(e.getBundle())) + "</td>")
      ;

    sb.append("<td  valign=top  align=left bgcolor=\"#eeeeee\">" +
              fontify(tf.format(new Date(e.getTime()))) + "</td>")
;

    sb.append("<td valign=top align=right bgcolor=\"#eeeeee\">" +
              fontify(levelString(e.getLevel())) + "</td>");


    sb.append("</tr>");

    sb.append("<tr>");
    sb.append("<td width=\"100%\" colspan=3>");
    sb.append(fontify(e.getMessage()));
    sb.append("</td>");
    sb.append("</tr>");

    ServiceReference sr = e.getServiceReference();
    if (null!=sr) {
      sb.append("<tr bgcolor=\"#eeeeee\">");
      sb.append("<td width=\"100%\" colspan=\"3\">");
      sb.append(fontify("Service Properties"));
      sb.append("</td>");
      sb.append("</tr>");
      String[] propKeys = sr.getPropertyKeys();
      for (int i=0; i<propKeys.length; i++) {
        // Reuse service reference properties presentation form the
        // services tab.
        StringWriter sw = new StringWriter();
        PrintWriter  pr = new PrintWriter(sw);
        try {
          org.knopflerfish.bundle.desktop.swing.Util
            .printObject(pr, sr.getProperty(propKeys[i]));
        } catch (IOException ioe) {
        }

        sb.append("<tr>");
        sb.append("<td valign=top align=left>" +fontify(propKeys[i]) +"</td>");
        sb.append("<td valign=top align=left colspan=\"2\">"
                  +fontify(sw.toString())
                  +"</td>");
        sb.append("</tr>");
      }
    }

    Throwable t = e.getException();
    if(t != null) {
      sb.append("<tr bgcolor=\"#eeeeee\">");

      sb.append("<td colspan=3 align=left bgcolor=\"#eeeeee\">" +
                fontify("Exception"));
      sb.append("</td>");
      sb.append("</tr>");

      sb.append("<tr>");
      sb.append("<td colspan=3>");

      StringWriter w = new StringWriter();
      t.printStackTrace(new PrintWriter(w));
      sb.append(fontify(Text.replace(w.toString(), "\n", "<br>")));
      sb.append("</td>");
      sb.append("</tr>");
    }

    sb.append("</table>");

    sb.append("</font>\n");
    sb.append("</html>");

    return sb.toString();
  }

  static public String fontify(String s) {
    return fontify(s, "-2");
  }

  static public String fontify(String s, String size) {
    return "<font size=\"" + size + "\" face=\"Verdana, Arial, Helvetica, sans-serif\">" + s + "</font>";
  }

  public static String toString(LogEntry e) {
    String s =
      "Time: "      + tf.format(new Date(e.getTime())) + "\n" +
      "Level: "     + levelString(e.getLevel()) + "\n" +
      "Message: "   + e.getMessage() + "\n";
    Throwable t = e.getException();
    if(t != null) {
      StringWriter w = new StringWriter();
      t.printStackTrace(new PrintWriter(w));
      s = s + w.toString();
    }

    return s;
  }


  static SimpleDateFormat tf = new SimpleDateFormat("MMM dd HH:mm:ss ");

  static String[] levels = {
    "error",
    "warning",
    "info",
    "debug",
  };

  public static String levelString(int n) {
    try {
      return levels[n-1];
    } catch (Exception e) {
      return "Unknown:" + n;
    }
  }

  public static StringBuffer pad(StringBuffer sb, int n) {
    while(sb.length() < n) sb.append(" ");
    return sb;
  }

}
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