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73785268 NR |
1 | package be.nikiroo.gofetch.support; |
2 | ||
3 | import java.io.IOException; | |
4 | import java.io.InputStream; | |
5 | import java.net.URL; | |
6 | import java.net.URLConnection; | |
7 | import java.util.List; | |
8 | import java.util.zip.GZIPInputStream; | |
9 | ||
10 | import be.nikiroo.gofetch.data.Comment; | |
11 | import be.nikiroo.gofetch.data.Story; | |
12 | ||
13 | public abstract class BasicSupport { | |
14 | public enum Type { | |
eaaeae39 | 15 | SLASHDOT, PIPEDOT, LWN, |
73785268 NR |
16 | } |
17 | ||
18 | static private String preselector; | |
19 | ||
20 | private Type type; | |
21 | ||
22 | abstract public List<Story> list() throws IOException; | |
23 | ||
24 | abstract public List<Comment> getComments(Story story) throws IOException; | |
25 | ||
26 | abstract public String getDescription(); | |
2d95a873 | 27 | |
73785268 NR |
28 | public String getSelector() { |
29 | return getSelector(type); | |
30 | } | |
31 | ||
32 | public Type getType() { | |
33 | return type; | |
34 | } | |
35 | ||
36 | protected void setType(Type type) { | |
37 | this.type = type; | |
38 | } | |
39 | ||
40 | /** | |
41 | * @param preselector | |
42 | * the preselector to set | |
43 | */ | |
44 | static public void setPreselector(String preselector) { | |
45 | BasicSupport.preselector = preselector; | |
46 | } | |
47 | ||
48 | static public BasicSupport getSupport(Type type) { | |
49 | BasicSupport support = null; | |
50 | ||
51 | if (type != null) { | |
52 | switch (type) { | |
53 | case SLASHDOT: | |
54 | support = new Slashdot(); | |
55 | break; | |
2d95a873 NR |
56 | case PIPEDOT: |
57 | support = new Pipedot(); | |
58 | break; | |
eaaeae39 NR |
59 | case LWN: |
60 | support = new LWN(); | |
61 | break; | |
73785268 NR |
62 | } |
63 | ||
64 | if (support != null) { | |
65 | support.setType(type); | |
66 | } | |
67 | } | |
68 | ||
69 | return support; | |
70 | } | |
71 | ||
72 | static public String getSelector(Type type) { | |
73 | return preselector + "/" + type + "/"; | |
74 | } | |
75 | ||
76 | // TODO: check Downloader.java? | |
77 | static protected InputStream open(URL url) throws IOException { | |
78 | URLConnection conn = url.openConnection(); | |
79 | conn.connect(); | |
80 | InputStream in = conn.getInputStream(); | |
81 | if ("gzip".equals(conn.getContentEncoding())) { | |
82 | in = new GZIPInputStream(in); | |
83 | } | |
84 | ||
85 | return in; | |
86 | } | |
87 | } |