Eric Kok
10 years ago
15 changed files with 21 additions and 196 deletions
@ -1,150 +0,0 @@
@@ -1,150 +0,0 @@
|
||||
/* |
||||
* This file is part of Transdroid Torrent Search |
||||
* <http://code.google.com/p/transdroid-search/>
|
||||
* |
||||
* Transdroid Torrent Search is free software: you can redistribute |
||||
* it and/or modify it under the terms of the GNU Lesser General |
||||
* Public License as published by the Free Software Foundation, |
||||
* either version 3 of the License, or (at your option) any later |
||||
* version. |
||||
* |
||||
* Transdroid Torrent Search is distributed in the hope that it will |
||||
* be useful, but WITHOUT ANY WARRANTY; without even the implied |
||||
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
||||
* See the GNU Lesser General Public License for more details. |
||||
* |
||||
* You should have received a copy of the GNU Lesser General Public |
||||
* License along with Transdroid. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
package org.transdroid.Rssparser; |
||||
|
||||
import java.io.BufferedReader; |
||||
import java.io.IOException; |
||||
import java.io.InputStream; |
||||
import java.io.InputStreamReader; |
||||
import java.io.UnsupportedEncodingException; |
||||
import java.util.zip.GZIPInputStream; |
||||
|
||||
import org.apache.http.Header; |
||||
import org.apache.http.HeaderElement; |
||||
import org.apache.http.HttpEntity; |
||||
import org.apache.http.HttpException; |
||||
import org.apache.http.HttpRequest; |
||||
import org.apache.http.HttpRequestInterceptor; |
||||
import org.apache.http.HttpResponse; |
||||
import org.apache.http.HttpResponseInterceptor; |
||||
import org.apache.http.entity.HttpEntityWrapper; |
||||
import org.apache.http.protocol.HttpContext; |
||||
|
||||
/** |
||||
* Provides a set of general helper methods that can be used in web-based communication. |
||||
* |
||||
* @author erickok |
||||
* |
||||
*/ |
||||
public class HttpHelper { |
||||
|
||||
/** |
||||
* HTTP request interceptor to allow for GZip-encoded data transfer |
||||
*/ |
||||
public static HttpRequestInterceptor gzipRequestInterceptor = new HttpRequestInterceptor() { |
||||
public void process(final HttpRequest request, final HttpContext context) throws HttpException, IOException { |
||||
if (!request.containsHeader("Accept-Encoding")) { |
||||
request.addHeader("Accept-Encoding", "gzip"); |
||||
} |
||||
} |
||||
}; |
||||
|
||||
/** |
||||
* HTTP response interceptor that decodes GZipped data |
||||
*/ |
||||
public static HttpResponseInterceptor gzipResponseInterceptor = new HttpResponseInterceptor() { |
||||
public void process(final HttpResponse response, final HttpContext context) throws HttpException, IOException { |
||||
HttpEntity entity = response.getEntity(); |
||||
Header ceheader = entity.getContentEncoding(); |
||||
if (ceheader != null) { |
||||
HeaderElement[] codecs = ceheader.getElements(); |
||||
for (int i = 0; i < codecs.length; i++) { |
||||
|
||||
if (codecs[i].getName().equalsIgnoreCase("gzip")) { |
||||
response.setEntity(new HttpHelper.GzipDecompressingEntity(response.getEntity())); |
||||
return; |
||||
} |
||||
} |
||||
} |
||||
} |
||||
|
||||
}; |
||||
|
||||
/** |
||||
* HTTP entity wrapper to decompress GZipped HTTP responses |
||||
*/ |
||||
private static class GzipDecompressingEntity extends HttpEntityWrapper { |
||||
|
||||
public GzipDecompressingEntity(final HttpEntity entity) { |
||||
super(entity); |
||||
} |
||||
|
||||
@Override |
||||
public InputStream getContent() throws IOException, IllegalStateException { |
||||
|
||||
// the wrapped entity's getContent() decides about repeatability
|
||||
InputStream wrappedin = wrappedEntity.getContent(); |
||||
|
||||
return new GZIPInputStream(wrappedin); |
||||
} |
||||
|
||||
@Override |
||||
public long getContentLength() { |
||||
// length of ungzipped content is not known
|
||||
return -1; |
||||
} |
||||
|
||||
} |
||||
|
||||
/* |
||||
* To convert the InputStream to String we use the BufferedReader.readLine() |
||||
* method. We iterate until the BufferedReader return null which means |
||||
* there's no more data to read. Each line will appended to a StringBuilder |
||||
* and returned as String. |
||||
* |
||||
* Taken from http://senior.ceng.metu.edu.tr/2009/praeda/2009/01/11/a-simple-restful-client-at-android/
|
||||
*/ |
||||
public static String convertStreamToString(InputStream is, String encoding) throws UnsupportedEncodingException { |
||||
InputStreamReader isr; |
||||
if (encoding != null) { |
||||
isr = new InputStreamReader(is, encoding); |
||||
} else { |
||||
isr = new InputStreamReader(is); |
||||
} |
||||
BufferedReader reader = new BufferedReader(isr); |
||||
StringBuilder sb = new StringBuilder(); |
||||
|
||||
String line = null; |
||||
try { |
||||
while ((line = reader.readLine()) != null) { |
||||
sb.append(line + "\n"); |
||||
} |
||||
} catch (IOException e) { |
||||
e.printStackTrace(); |
||||
} finally { |
||||
try { |
||||
is.close(); |
||||
} catch (IOException e) { |
||||
e.printStackTrace(); |
||||
} |
||||
} |
||||
return sb.toString(); |
||||
} |
||||
|
||||
public static String convertStreamToString(InputStream is) { |
||||
try { |
||||
return convertStreamToString(is, null); |
||||
} catch (UnsupportedEncodingException e) { |
||||
// Since this is going to use the default encoding, it is never going to crash on an UnsupportedEncodingException
|
||||
e.printStackTrace(); |
||||
return null; |
||||
} |
||||
} |
||||
|
||||
} |
||||
Loading…
Reference in new issue