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/*
* Copyright (C) 2013-2014 The CyanogenMod Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.internal.telephony;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.Collections;
import java.util.Map;
import java.util.HashMap;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import android.os.Environment;
import android.telephony.Rlog;
import android.util.Xml;
import com.android.internal.util.XmlUtils;
public class Operators{
// Initialize list of Operator codes
// this will be taken care of when garbage collection starts.
private HashMap<String, String> initList() {
HashMap<String, String> init = new HashMap<String, String>();
//taken from spnOveride.java
FileReader spnReader;
final File spnFile = new File(Environment.getRootDirectory(),
"etc/selective-spn-conf.xml");
try {
spnReader = new FileReader(spnFile);
} catch (FileNotFoundException e) {
Rlog.w("Operatorcheck", "Can not open " +
Environment.getRootDirectory() + "/etc/selective-spn-conf.xml");
return init;
}
try {
XmlPullParser parser = Xml.newPullParser();
parser.setInput(spnReader);
XmlUtils.beginDocument(parser, "spnOverrides");
while (true) {
XmlUtils.nextElement(parser);
String name = parser.getName();
if (!"spnOverride".equals(name)) {
break;
}
String numeric = parser.getAttributeValue(null, "numeric");
String data = parser.getAttributeValue(null, "spn");
init.put(numeric, data);
}
} catch (XmlPullParserException e) {
Rlog.w("Operatorcheck", "Exception in spn-conf parser " + e);
} catch (IOException e) {
Rlog.w("Operatorcheck", "Exception in spn-conf parser " + e);
}
return init;
}
//this will stay persistant in memory when called
private static String stored = null;
private static String storedOperators = null;
public static String operatorReplace(String response){
// sanity checking if the value is actually not equal to the range apn
// numerics
// if it is null, check your ril class.
if(response == null ||
(5 != response.length() && response.length() != 6)){
return response;
}
// this will check if the stored value is equal to other.
// this uses a technique called last known of good value.
// along with sanity checking
if(storedOperators != null && stored != null && stored.equals(response)){
return storedOperators;
}
stored = response;
try {
// this will find out if it a number then it will catch it based
// on invalid chars.
Integer.parseInt(response);
} catch(NumberFormatException E){
// not a number, pass it along to stored operator until the next
// round.
storedOperators = response;
return storedOperators;
}
// this code will be taking care of when garbage collection start
Operators init = new Operators();
Map<String, String> operators = init.initList();
storedOperators = operators.containsKey(response) ? operators.get(response) : response;
return storedOperators;
}
// this will not stay persistant in memory, this will be taken care of
// iin garbage collection routiene.
private Map<String, String> unOptOperators = null;
// unoptimized version of operatorreplace for responseOperatorInfos
// this will provide a little more flexiblilty in a loop like sisuation
// same numbers of checks like before
// this is for the search network functionality
public String unOptimizedOperatorReplace(String response){
// sanity checking if the value is actually not equal to the range apn
// numerics
// if it is null, check your ril class.
if(response == null ||
(5 != response.length() && response.length() != 6)){
return response;
}
try {
// this will find out if it a number then it will catch it based
// on invalid chars.
Integer.parseInt(response);
} catch(NumberFormatException E){
// an illegal char is found i.e a word
return response;
}
if (unOptOperators == null){
unOptOperators = initList();
}
return unOptOperators.containsKey(response) ? unOptOperators.get(response) : response;
}
}
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