/*
Android Asynchronous Http Client
Copyright (c) 2011 James Smith <james@loopj.com>
http://loopj.com
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/*
This code is taken from Rafael Sanches' blog.
http://blog.rafaelsanches.com/2011/01/29/upload-using-multipart-post-using-httpclient-in-android/
*/
package com.loopj.android.http;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Random;
import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.message.BasicHeader;
class SimpleMultipartEntity implements HttpEntity {
private final static char[] MULTIPART_CHARS = "-_1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ".toCharArray();
private String boundary = null;
ByteArrayOutputStream out = new ByteArrayOutputStream();
boolean isSetLast = false;
boolean isSetFirst = false;
public SimpleMultipartEntity() {
final StringBuffer buf = new StringBuffer();
final Random rand = new Random();
for (int i = 0; i < 30; i++) {
buf.append(MULTIPART_CHARS[rand.nextInt(MULTIPART_CHARS.length)]);
}
this.boundary = buf.toString();
}
public void writeFirstBoundaryIfNeeds(){
if(!isSetFirst){
try {
out.write(("--" + boundary + "\r\n").getBytes());
} catch (final IOException e) {
e.printStackTrace();
}
}
isSetFirst = true;
}
public void writeLastBoundaryIfNeeds() {
if(isSetLast){
return;
}
try {
out.write(("\r\n--" + boundary + "--\r\n").getBytes());
} catch (final IOException e) {
e.printStackTrace();
}
isSetLast = true;
}
public void addPart(final String key, final String value) {
writeFirstBoundaryIfNeeds();
try {
out.write(("Content-Disposition: form-data; name=\"" +key+"\"\r\n\r\n").getBytes());
out.write(value.getBytes());
out.write(("\r\n--" + boundary + "\r\n").getBytes());
} catch (final IOException e) {
e.printStackTrace();
}
}
public void addPart(final String key, final String fileName, final InputStream fin, final boolean isLast){
addPart(key, fileName, fin, "application/octet-stream", isLast);
}
public void addPart(final String key, final String fileName, final InputStream fin, String type, final boolean isLast){
writeFirstBoundaryIfNeeds();
try {
type = "Content-Type: "+type+"\r\n";
out.write(("Content-Disposition: form-data; name=\""+ key+"\"; filename=\"" + fileName + "\"\r\n").getBytes());
out.write(type.getBytes());
out.write("Content-Transfer-Encoding: binary\r\n\r\n".getBytes());
final byte[] tmp = new byte[4096];
int l = 0;
while ((l = fin.read(tmp)) != -1) {
out.write(tmp, 0, l);
}
if(!isLast)
out.write(("\r\n--" + boundary + "\r\n").getBytes());
out.flush();
} catch (final IOException e) {
e.printStackTrace();
} finally {
try {
fin.close();
} catch (final IOException e) {
e.printStackTrace();
}
}
}
public void addPart(final String key, final File value, final boolean isLast) {
try {
addPart(key, value.getName(), new FileInputStream(value), isLast);
} catch (final FileNotFoundException e) {
e.printStackTrace();
}
}
@Override
public long getContentLength() {
writeLastBoundaryIfNeeds();
return out.toByteArray().length;
}
@Override
public Header getContentType() {
return new BasicHeader("Content-Type", "multipart/form-data; boundary=" + boundary);
}
@Override
public boolean isChunked() {
return false;
}
@Override
public boolean isRepeatable() {
return false;
}
@Override
public boolean isStreaming() {
return false;
}
@Override
public void writeTo(final OutputStream outstream) throws IOException {
outstream.write(out.toByteArray());
}
@Override
public Header getContentEncoding() {
return null;
}
@Override
public void consumeContent() throws IOException,
UnsupportedOperationException {
if (isStreaming()) {
throw new UnsupportedOperationException(
"Streaming entity does not implement #consumeContent()");
}
}
@Override
public InputStream getContent() throws IOException,
UnsupportedOperationException {
return new ByteArrayInputStream(out.toByteArray());
}
}