Android Open Source - GenericServer User File

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Back to project page GenericServer.

License

The source code is released under:

GNU General Public License

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Java Source Code

package com.davecoss.android.genericserver;
/*  ww  w  . j av a  2 s.  c  o  m*/
import java.io.File;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Locale;

// TODO: Consider using polymorphism instead.
public class UserFile {
  public enum FileType {
    HTML, TEXT, JSON, JPEG, JAVASCRIPT, CSS
  }
  
  public static final long MAX_OUTFILE_SIZE = 33554432L;
  private BufferedOutputStream outstream = null;

  private File the_file;

  public UserFile(File file) {
    this.the_file = file;  
  }

  public String get_parent() {
    return the_file.getParent();
  }
  
  public String get_absolute_path() {
    return the_file.getAbsolutePath();
  }

  public String get_filename() {
    return the_file.getName();
  }

  public static UserFile.FileType filetype_by_extension(String filename) {
    if (!filename.contains("."))
      return UserFile.FileType.HTML;

    String extension = filename.substring(filename.lastIndexOf(".") + 1);
    if (extension.length() > 0) {
      extension = extension.toLowerCase(Locale.US);
      if (extension.equals("css"))
        return UserFile.FileType.CSS;
      else if (extension.equals("html") || extension.equals("htm"))
        return UserFile.FileType.HTML;
      else if (extension.equals("jpg") || extension.equals("jpeg"))
        return UserFile.FileType.JPEG;
      else if (extension.equals("js"))
        return UserFile.FileType.JAVASCRIPT;
      else if (extension.equals("json"))
        return UserFile.FileType.JSON;
    }
    return UserFile.FileType.TEXT;
  }

  public FileType get_filetype() {
    return filetype_by_extension(the_file.getName());
  }

  public BufferedInputStream get_input_stream() throws SecurityException, FileNotFoundException, HTTPError {
    String filename = the_file.getName();

    if (filename.length() == 0)
      throw new HTTPError("filename not specified");

    return new BufferedInputStream(new FileInputStream(
        the_file));
  
      
  }

  public void init_output() throws IOException, FileNotFoundException, HTTPError {
    String filename = the_file.getName();
    
    if (filename.length() == 0)
      throw new HTTPError("filename not specified");
    
    if(this.outstream != null)
      this.outstream.close();
    this.outstream = new BufferedOutputStream(new FileOutputStream(the_file, true));
  }
  
  public void flush() throws IOException {
    if(outstream == null)
      return;
    outstream.flush();
  }
  
  public void close() throws IOException {
    if(outstream == null)
      return;
    
    outstream.close();
  }
  
  public void write(byte[] bytes, int offset, int len) 
      throws FileError, HTTPError, IOException {
  
    String filename = the_file.getName();
  
    if (filename.length() == 0)
      throw new HTTPError("filename not specified");
    
    long file_size = the_file.length();
    if(file_size + len >= MAX_OUTFILE_SIZE)
      throw new FileError("Max file size already reached");
    
    if(outstream == null)
      init_output();
    
    outstream.write(bytes, offset, len);
    
  }
}

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