Android Open Source - HapiPodcastJ Zip Exporter

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Back to project page HapiPodcastJ.

License

The source code is released under:

GNU General Public License

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Java Source Code

package info.xuluan.podcast.utils;
//from   w  w w  .  ja  v a  2s. c  o  m
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.zip.ZipOutputStream;

import android.app.Activity;
import android.text.TextUtils;
import android.widget.Toast;

public class ZipExporter {
  public interface ContentWriter {
    void writeContent(ZipOutputStream zos) throws IOException;
  }
  
  public static void exportToZipFile(Activity act, String filename, ContentWriter cw) {
    String filepath = SDCardMgr.getExportDir()+"/"+filename;
    File outFile = new File(filepath);
    ZipOutputStream zos = null;
    Toast.makeText(act, "Please wait... ", Toast.LENGTH_LONG).show(); 
    try {
      FileOutputStream os = new FileOutputStream(outFile);
      zos = new ZipOutputStream(new BufferedOutputStream(os));
      zos.setLevel(0); //mp3 files don't compress well, and our XML is small
      cw.writeContent(zos);
      zos.close();
      zos = null;
      Toast.makeText(act, "Exported zip file to : "+ filepath, 
          Toast.LENGTH_LONG).show();
    } catch (IOException ex) {
      ex.printStackTrace();
      Toast.makeText(act, "Export zip failed ", 
          Toast.LENGTH_LONG).show();
    } finally {
      try {
        if (zos!=null)
          zos.close();
      } catch (Exception ex) {}
    }
  }
  
  public static String getExportZipFileName(String base)
  {
    base = base.replaceAll("[\\s\\\\:\\<\\>\\[\\]\\*\\|\\/\\?\\{\\}\\'\\\"]+", "_");    
    return base+".zip";
  }

  public static void writeTagLine(PrintWriter out, String tag, int level, boolean isStart) {
    writeIndent(out,level);
    out.print("<"+(isStart?"":"/")+tag+">\n");
  }
  
  public static void writeXmlField(PrintWriter out, String fieldName, long value, int level) {
    writeXmlField(out, fieldName, Long.toString(value), level);
  }
  
  public static void writeXmlField(PrintWriter out, String fieldName, String text, int level) {
    if (text==null)
      return;
    writeIndent(out,level);
    out.print("<"+fieldName+">");
    out.print(TextUtils.htmlEncode(text).toString());
    out.print("</"+fieldName+">\n");
  }

  public static void writeIndent(PrintWriter out, int level) {
    for (; level>0; level--)
      out.print("  ");  //indent
  }

}

Java Source Code List