1 | /* |
2 | * Tomdroid |
3 | * Tomboy on Android |
4 | * http://www.launchpad.net/tomdroid |
5 | * |
6 | * Copyright 2009, Benoit Garret <benoit.garret_launchpad@gadz.org> |
7 | * |
8 | * This file is part of Tomdroid. |
9 | * |
10 | * Tomdroid is free software: you can redistribute it and/or modify |
11 | * it under the terms of the GNU General Public License as published by |
12 | * the Free Software Foundation, either version 3 of the License, or |
13 | * (at your option) any later version. |
14 | * |
15 | * Tomdroid is distributed in the hope that it will be useful, |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
18 | * GNU General Public License for more details. |
19 | * |
20 | * You should have received a copy of the GNU General Public License |
21 | * along with Tomdroid. If not, see <http://www.gnu.org/licenses/>. |
22 | */ |
23 | package org.tomdroid.sync.web; |
24 | |
25 | import java.io.BufferedReader; |
26 | import java.io.IOException; |
27 | import java.io.InputStream; |
28 | import java.io.InputStreamReader; |
29 | import java.net.UnknownHostException; |
30 | |
31 | import org.apache.http.HttpEntity; |
32 | import org.apache.http.HttpResponse; |
33 | import org.apache.http.client.ClientProtocolException; |
34 | import org.apache.http.client.methods.HttpUriRequest; |
35 | import org.apache.http.impl.client.DefaultHttpClient; |
36 | import org.tomdroid.ui.Tomdroid; |
37 | |
38 | import android.util.Log; |
39 | |
40 | public abstract class WebConnection { |
41 | |
42 | private static final String TAG = "WebConnection"; |
43 | |
44 | public abstract String get(String uri) throws UnknownHostException; |
45 | public abstract String put(String uri, String data) throws UnknownHostException; |
46 | |
47 | private static String convertStreamToString(InputStream is) { |
48 | /* |
49 | * To convert the InputStream to String we use the BufferedReader.readLine() |
50 | * method. We iterate until the BufferedReader return null which means |
51 | * there's no more data to read. Each line will appended to a StringBuilder |
52 | * and returned as String. |
53 | */ |
54 | BufferedReader reader = new BufferedReader(new InputStreamReader(is)); |
55 | StringBuilder sb = new StringBuilder(); |
56 | |
57 | String line = null; |
58 | try { |
59 | while ((line = reader.readLine()) != null) { |
60 | sb.append(line + "\n"); |
61 | } |
62 | } catch (IOException e) { |
63 | e.printStackTrace(); |
64 | } finally { |
65 | try { |
66 | is.close(); |
67 | } catch (IOException e) { |
68 | e.printStackTrace(); |
69 | } |
70 | } |
71 | |
72 | return sb.toString(); |
73 | } |
74 | |
75 | protected String parseResponse(HttpResponse response) { |
76 | |
77 | if (response == null) |
78 | return ""; |
79 | |
80 | String result = null; |
81 | |
82 | // Examine the response status |
83 | if (Tomdroid.LOGGING_ENABLED) Log.i(TAG, "Response status : "+response.getStatusLine().toString()); |
84 | |
85 | // Get hold of the response entity |
86 | HttpEntity entity = response.getEntity(); |
87 | // If the response does not enclose an entity, there is no need |
88 | // to worry about connection release |
89 | |
90 | if (entity != null) { |
91 | |
92 | try { |
93 | InputStream instream; |
94 | |
95 | instream = entity.getContent(); |
96 | |
97 | result = convertStreamToString(instream); |
98 | |
99 | if (Tomdroid.LOGGING_ENABLED) Log.i(TAG, "Received : "+result); |
100 | |
101 | // Closing the input stream will trigger connection release |
102 | instream.close(); |
103 | |
104 | } catch (IllegalStateException e) { |
105 | // TODO Auto-generated catch block |
106 | e.printStackTrace(); |
107 | } catch (IOException e) { |
108 | // TODO Auto-generated catch block |
109 | e.printStackTrace(); |
110 | } |
111 | } |
112 | |
113 | return result; |
114 | } |
115 | |
116 | protected HttpResponse execute(HttpUriRequest request) throws UnknownHostException { |
117 | |
118 | DefaultHttpClient httpclient = new DefaultHttpClient(); |
119 | |
120 | try { |
121 | // Execute the request |
122 | HttpResponse response = httpclient.execute(request); |
123 | return response; |
124 | |
125 | }catch (UnknownHostException e){ |
126 | throw e; |
127 | } catch (ClientProtocolException e) { |
128 | e.printStackTrace(); |
129 | } catch (IOException e) { |
130 | e.printStackTrace(); |
131 | } catch (IllegalArgumentException e) { |
132 | e.printStackTrace(); |
133 | } catch (IllegalStateException e) { |
134 | e.printStackTrace(); |
135 | } |
136 | |
137 | return null; |
138 | } |
139 | } |