package org.jboss.resteasy.plugins.providers;
import org.jboss.resteasy.specimpl.MultivaluedMapImpl;
import org.jboss.resteasy.util.Encode;
import org.jboss.resteasy.util.FindAnnotation;
import org.jboss.resteasy.util.HttpHeaderNames;
import javax.ws.rs.Consumes;
import javax.ws.rs.Encoded;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Provider;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.lang.annotation.Annotation;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.net.URLEncoder;
import java.util.List;
import java.util.Map;
/**
* @author <a href="mailto:bill@burkecentral.com">Bill Burke</a>
* @version $Revision: 1 $
*/
@Provider
@Produces("application/x-www-form-urlencoded")
@Consumes("application/x-www-form-urlencoded")
public class FormUrlEncodedProvider implements MessageBodyReader<MultivaluedMap<String, String>>, MessageBodyWriter<MultivaluedMap<String, String>>
{
public boolean isReadable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType)
{
if (!MultivaluedMap.class.isAssignableFrom(type)) return false;
if (genericType == null) return true;
if (!(genericType instanceof ParameterizedType)) return false;
ParameterizedType params = (ParameterizedType) genericType;
if (params.getActualTypeArguments().length != 2) return false;
return params.getActualTypeArguments()[0].equals(String.class) && params.getActualTypeArguments()[1].equals(String.class);
}
public MultivaluedMap<String, String> readFrom(Class<MultivaluedMap<String, String>> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, String> httpHeaders, InputStream entityStream) throws IOException
{
boolean encoded = FindAnnotation.findAnnotation(annotations, Encoded.class) != null;
if (encoded) return parseForm(entityStream);
else return Encode.decode(parseForm(entityStream));
}
public static MultivaluedMap<String, String> parseForm(InputStream entityStream)
throws IOException
{
char[] buffer = new char[100];
StringBuffer buf = new StringBuffer();
BufferedReader reader = new BufferedReader(new InputStreamReader(entityStream));
int wasRead = 0;
do
{
wasRead = reader.read(buffer, 0, 100);
if (wasRead > 0) buf.append(buffer, 0, wasRead);
} while (wasRead > -1);
String form = buf.toString();
MultivaluedMap<String, String> formData = new MultivaluedMapImpl<String, String>();
String[] params = form.split("&");
for (String param : params)
{
if (param.indexOf('=') >= 0)
{
String[] nv = param.split("=");
String val = nv.length > 1 ? nv[1] : "";
formData.add(nv[0], val);
}
else
{
formData.add(param, "");
}
}
return formData;
}
public boolean isWriteable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType)
{
if (!MultivaluedMap.class.isAssignableFrom(type)) return false;
if (genericType == null) return true;
if (!(genericType instanceof ParameterizedType)) return false;
ParameterizedType params = (ParameterizedType) genericType;
if (params.getActualTypeArguments().length != 2) return false;
return params.getActualTypeArguments()[0].equals(String.class) && params.getActualTypeArguments()[1].equals(String.class);
}
public long getSize(MultivaluedMap<String, String> stringStringMultivaluedMap, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType)
{
return -1;
}
public void writeTo(MultivaluedMap<String, String> formData, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException
{
boolean encoded = FindAnnotation.findAnnotation(annotations, Encoded.class) != null;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
OutputStreamWriter writer = new OutputStreamWriter(baos, "UTF-8");
boolean first = true;
for (Map.Entry<String, List<String>> entry : formData.entrySet())
{
String encodedName = entry.getKey();
if (!encoded) encodedName = URLEncoder.encode(entry.getKey(), "UTF-8");
for (String value : entry.getValue())
{
if (first) first = false;
else writer.write("&");
if (!encoded)
{
value = URLEncoder.encode(value, "UTF-8");
}
writer.write(encodedName);
writer.write("=");
writer.write(value);
}
writer.flush();
}
byte[] bytes = baos.toByteArray();
httpHeaders.putSingle(HttpHeaderNames.CONTENT_LENGTH, Integer.toString(bytes.length));
entityStream.write(bytes);
}
}