Android Open Source - tldr-viewer Tldr Content Provider

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License

The source code is released under:

MIT License

Java Source Code

package de.gianasista.tldr_viewer.util;
// w  w  w  .j  a  v a  2 s  .  c o m
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.InvalidObjectException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;

import android.content.res.AssetManager;
import android.os.AsyncTask;
import android.text.Html;
import android.text.Spanned;
import android.util.Log;
import de.gianasista.tldr_viewer.CommandListActivity;

/**
 * @author vera
 *
 */
public class TldrContentProvider extends AsyncTask<URL, Void, String>
{
  private AssetManager assetManager;
  private CommandContentDelegate contentDelegate;
  
  public TldrContentProvider(AssetManager assetManager)
  {
    this.assetManager = assetManager;
  }
  
  public TldrContentProvider(AssetManager assetManager, CommandContentDelegate delegate)
  {
    this(assetManager);
    
    this.contentDelegate = delegate;
  }
  
  public String[] getCommandList()
  {
    List<String> resultList = new ArrayList<String>();
    
    try
    {
      InputStream inputStream = assetManager.open("common.txt");
      BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
      String line;
      
      while( (line=bufferedReader.readLine()) != null)
      {
        resultList.add(line);
      }
    }
    catch (IOException e) 
    {
      Log.e(this.getClass().getName(), e.getMessage());
    }
    
    return stripFileExtensionFromList(resultList.toArray(new String[] {}));
  }
    
  private String[] stripFileExtensionFromList(String[] listWithFileExtension)
  {
    List<String> resultList = new ArrayList<String>();
    for(String element : listWithFileExtension)
    {
      resultList.add(element.substring(0, element.length()-3));
    }
    
    return resultList.toArray(new String[] {});
  }
  
  public void loadHtmlContentStringForCommand(String commandName)
  {
    // https://raw.githubusercontent.com/tldr-pages/tldr/master/pages/common/ssh.md
    try {
      this.execute(new URL("https://raw.githubusercontent.com/tldr-pages/tldr/master/pages/common/"+commandName+".md"));
    } catch (MalformedURLException e) {
      Log.e(this.getClass().getName(), e.getMessage());
    }
  }

  @Override
  protected String doInBackground(URL... params) 
  {
    if(params.length == 0) return null;
    
    StringBuilder result = new StringBuilder();
    MdFileContentParser parser = new MdFileContentParser();
    DataInputStream urlDataStream = null;
    BufferedReader reader = null;
    
    try {
      urlDataStream = new DataInputStream(params[0].openStream());
      reader = new BufferedReader(new InputStreamReader(urlDataStream));
      String line;
      
      while( (line=reader.readLine()) != null)
      {
        result.append(parser.parseLine(line));
      }
    } catch (IOException e) {
      try 
      {
        if (reader != null) 
          reader.close();
      } catch(IOException exc) {
        Log.e(this.getClass().getName(), exc.getMessage());
      }
      
      try 
      {
        if (urlDataStream != null) 
          urlDataStream.close();
      } catch(IOException exc) {
        Log.e(this.getClass().getName(), exc.getMessage());
      }
      
      Log.e(this.getClass().getName(), e.getMessage());
    }
    
    return result.toString();
  }
  
  @Override
  protected void onPostExecute(String result) 
  {
    super.onPostExecute(result);
    contentDelegate.receiveCommandContent(result);
  }
}

Java Source Code List

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