1package com.android.internal.telephony.gsm;
2
3import java.io.File;
4import java.io.FileNotFoundException;
5import java.io.FileReader;
6import java.io.IOException;
7import java.util.HashMap;
8
9import org.xmlpull.v1.XmlPullParser;
10import org.xmlpull.v1.XmlPullParserException;
11
12import android.os.Environment;
13import android.util.Log;
14import android.util.Xml;
15
16import com.android.internal.util.XmlUtils;
17
18public class SpnOverride {
19    private HashMap<String, String> CarrierSpnMap;
20
21
22    static final String LOG_TAG = "GSM";
23    static final String PARTNER_SPN_OVERRIDE_PATH ="etc/spn-conf.xml";
24
25    SpnOverride () {
26        CarrierSpnMap = new HashMap<String, String>();
27        loadSpnOverrides();
28    }
29
30    boolean containsCarrier(String carrier) {
31        return CarrierSpnMap.containsKey(carrier);
32    }
33
34    String getSpn(String carrier) {
35        return CarrierSpnMap.get(carrier);
36    }
37
38    private void loadSpnOverrides() {
39        FileReader spnReader;
40
41        final File spnFile = new File(Environment.getRootDirectory(),
42                PARTNER_SPN_OVERRIDE_PATH);
43
44        try {
45            spnReader = new FileReader(spnFile);
46        } catch (FileNotFoundException e) {
47            Log.w(LOG_TAG, "Can't open " +
48                    Environment.getRootDirectory() + "/" + PARTNER_SPN_OVERRIDE_PATH);
49            return;
50        }
51
52        try {
53            XmlPullParser parser = Xml.newPullParser();
54            parser.setInput(spnReader);
55
56            XmlUtils.beginDocument(parser, "spnOverrides");
57
58            while (true) {
59                XmlUtils.nextElement(parser);
60
61                String name = parser.getName();
62                if (!"spnOverride".equals(name)) {
63                    break;
64                }
65
66                String numeric = parser.getAttributeValue(null, "numeric");
67                String data    = parser.getAttributeValue(null, "spn");
68
69                CarrierSpnMap.put(numeric, data);
70            }
71        } catch (XmlPullParserException e) {
72            Log.w(LOG_TAG, "Exception in spn-conf parser " + e);
73        } catch (IOException e) {
74            Log.w(LOG_TAG, "Exception in spn-conf parser " + e);
75        }
76    }
77
78}
79