Android Open Source - Android-J0Loader Param

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License

The source code is released under:

MIT License

Java Source Code

/*
 * The MIT License Copyright (c) 2014 Krayushkin Konstantin (jangokvk@gmail.com)
 */*from  w  w w . j  ava2 s.com*/
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
 * associated documentation files (the "Software"), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or
 * substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
 * NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

package ru.jango.j0loader.param;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;

/**
 * Base class for managing HTTP request params. You can use this class and it's subclasses to
 * construct and manipulate HTTP-entities that you need. All aspects (including ContentType) could
 * be configured as you need.
 * <br><br>
 *
 * If you want a {@link Param}-like wrapper (like
 * {@link BitmapParam}) for some complicated structure (like
 * {@link android.graphics.Bitmap}), it's a good idea to subclass {@link Param}.
 */
public class Param {

    public static final String RN = "\r\n";
    public static final String HYPHENS = "--";
    public static final String BOUNDARY = "******";

    private byte[] rawData;
  private String name;
  private String contentType;
  private String contentDisposition;

  public byte[] getRawData() {
    return rawData;
  }

  public String getName() {
    return name;
  }

  public String getContentType() {
    return contentType;
  }

  public int getContentLength() {
    if (rawData == null) return 0;
    return rawData.length;
  }

  public String getContentDisposition() {
    return contentDisposition;
  }

  public Param setRawData(byte[] rawData) {
    this.rawData = rawData;
    return this;
  }

  public Param setName(String name) {
    this.name = name;
    return this;
  }

  public Param setContentType(String contentType) {
    this.contentType = contentType;
    return this;
  }

  public Param setContentDisposition(String contentDisposition) {
    this.contentDisposition = contentDisposition;
    return this;
  }

  /**
   * Writes this {@link Param} into the specified {@link java.io.OutputStream}
     * as an HTTP-entity (with all headers, Black-Jack and others...)
     *
     * @see #encodeEntity()
   */
  public void writeToStream(OutputStream out) throws IOException {
    out.write(encodeEntity());
  }

  /**
   * Transforms this {@link Param} into an HTTP-entity of full value - adds all
     * needed headers and boundaries before and after and transforms all this into a byte array.
   */
  public byte[] encodeEntity() {
    final ByteArrayOutputStream out = new ByteArrayOutputStream();
    byte[] entity = null;
    
    try {
      out.write(("Content-Disposition: " + getContentDisposition() + RN).getBytes("UTF-8"));
      out.write(("Content-Type: " + getContentType() + RN).getBytes("UTF-8"));
      out.write(("Content-Length: " + getContentLength() + RN).getBytes("UTF-8"));
      out.write(RN.getBytes("UTF-8"));
      out.write(rawData);
      out.write(RN.getBytes("UTF-8"));
      out.write((HYPHENS + BOUNDARY + RN).getBytes("UTF-8"));
      out.flush();
      
      entity = out.toByteArray();
    } catch (Exception ignored) {}
    finally { try { out.close(); } catch(Exception ignored) {} }
    
    return entity;
  }
  
}

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