| /* |
| * Copyright (C) 2016 The Android Open Source 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.voicemail.impl.utils; |
| |
| import android.util.ArrayMap; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| import org.xmlpull.v1.XmlPullParser; |
| import org.xmlpull.v1.XmlPullParserException; |
| |
| public class XmlUtils { |
| |
| public static final ArrayMap<String, ?> readThisArrayMapXml( |
| XmlPullParser parser, String endTag, String[] name, ReadMapCallback callback) |
| throws XmlPullParserException, java.io.IOException { |
| ArrayMap<String, Object> map = new ArrayMap<>(); |
| |
| int eventType = parser.getEventType(); |
| do { |
| if (eventType == XmlPullParser.START_TAG) { |
| Object val = readThisValueXml(parser, name, callback, true); |
| map.put(name[0], val); |
| } else if (eventType == XmlPullParser.END_TAG) { |
| if (parser.getName().equals(endTag)) { |
| return map; |
| } |
| throw new XmlPullParserException("Expected " + endTag + " end tag at: " + parser.getName()); |
| } |
| eventType = parser.next(); |
| } while (eventType != XmlPullParser.END_DOCUMENT); |
| |
| throw new XmlPullParserException("Document ended before " + endTag + " end tag"); |
| } |
| |
| /** |
| * Read an ArrayList object from an XmlPullParser. The XML data could previously have been |
| * generated by writeListXml(). The XmlPullParser must be positioned <em>after</em> the tag that |
| * begins the list. |
| * |
| * @param parser The XmlPullParser from which to read the list data. |
| * @param endTag Name of the tag that will end the list, usually "list". |
| * @param name An array of one string, used to return the name attribute of the list's tag. |
| * @return HashMap The newly generated list. |
| */ |
| public static final ArrayList readThisListXml( |
| XmlPullParser parser, |
| String endTag, |
| String[] name, |
| ReadMapCallback callback, |
| boolean arrayMap) |
| throws XmlPullParserException, java.io.IOException { |
| ArrayList list = new ArrayList(); |
| |
| int eventType = parser.getEventType(); |
| do { |
| if (eventType == XmlPullParser.START_TAG) { |
| Object val = readThisValueXml(parser, name, callback, arrayMap); |
| list.add(val); |
| } else if (eventType == XmlPullParser.END_TAG) { |
| if (parser.getName().equals(endTag)) { |
| return list; |
| } |
| throw new XmlPullParserException("Expected " + endTag + " end tag at: " + parser.getName()); |
| } |
| eventType = parser.next(); |
| } while (eventType != XmlPullParser.END_DOCUMENT); |
| |
| throw new XmlPullParserException("Document ended before " + endTag + " end tag"); |
| } |
| |
| /** |
| * Read a String[] object from an XmlPullParser. The XML data could previously have been generated |
| * by writeStringArrayXml(). The XmlPullParser must be positioned <em>after</em> the tag that |
| * begins the list. |
| * |
| * @param parser The XmlPullParser from which to read the list data. |
| * @param endTag Name of the tag that will end the list, usually "string-array". |
| * @param name An array of one string, used to return the name attribute of the list's tag. |
| * @return Returns a newly generated String[]. |
| */ |
| public static String[] readThisStringArrayXml(XmlPullParser parser, String endTag, String[] name) |
| throws XmlPullParserException, java.io.IOException { |
| |
| parser.next(); |
| |
| List<String> array = new ArrayList<>(); |
| |
| int eventType = parser.getEventType(); |
| do { |
| if (eventType == XmlPullParser.START_TAG) { |
| if (parser.getName().equals("item")) { |
| try { |
| array.add(parser.getAttributeValue(null, "value")); |
| } catch (NullPointerException e) { |
| throw new XmlPullParserException("Need value attribute in item"); |
| } catch (NumberFormatException e) { |
| throw new XmlPullParserException("Not a number in value attribute in item"); |
| } |
| } else { |
| throw new XmlPullParserException("Expected item tag at: " + parser.getName()); |
| } |
| } else if (eventType == XmlPullParser.END_TAG) { |
| if (parser.getName().equals(endTag)) { |
| return array.toArray(new String[0]); |
| } else if (parser.getName().equals("item")) { |
| |
| } else { |
| throw new XmlPullParserException( |
| "Expected " + endTag + " end tag at: " + parser.getName()); |
| } |
| } |
| eventType = parser.next(); |
| } while (eventType != XmlPullParser.END_DOCUMENT); |
| |
| throw new XmlPullParserException("Document ended before " + endTag + " end tag"); |
| } |
| |
| private static Object readThisValueXml( |
| XmlPullParser parser, String[] name, ReadMapCallback callback, boolean arrayMap) |
| throws XmlPullParserException, java.io.IOException { |
| final String valueName = parser.getAttributeValue(null, "name"); |
| final String tagName = parser.getName(); |
| |
| Object res; |
| |
| if (tagName.equals("null")) { |
| res = null; |
| } else if (tagName.equals("string")) { |
| String value = ""; |
| int eventType; |
| while ((eventType = parser.next()) != XmlPullParser.END_DOCUMENT) { |
| if (eventType == XmlPullParser.END_TAG) { |
| if (parser.getName().equals("string")) { |
| name[0] = valueName; |
| return value; |
| } |
| throw new XmlPullParserException("Unexpected end tag in <string>: " + parser.getName()); |
| } else if (eventType == XmlPullParser.TEXT) { |
| value += parser.getText(); |
| } else if (eventType == XmlPullParser.START_TAG) { |
| throw new XmlPullParserException("Unexpected start tag in <string>: " + parser.getName()); |
| } |
| } |
| throw new XmlPullParserException("Unexpected end of document in <string>"); |
| } else if ((res = readThisPrimitiveValueXml(parser, tagName)) != null) { |
| // all work already done by readThisPrimitiveValueXml |
| } else if (tagName.equals("string-array")) { |
| res = readThisStringArrayXml(parser, "string-array", name); |
| name[0] = valueName; |
| return res; |
| } else if (tagName.equals("list")) { |
| parser.next(); |
| res = readThisListXml(parser, "list", name, callback, arrayMap); |
| name[0] = valueName; |
| return res; |
| } else if (callback != null) { |
| res = callback.readThisUnknownObjectXml(parser, tagName); |
| name[0] = valueName; |
| return res; |
| } else { |
| throw new XmlPullParserException("Unknown tag: " + tagName); |
| } |
| |
| // Skip through to end tag. |
| int eventType; |
| while ((eventType = parser.next()) != XmlPullParser.END_DOCUMENT) { |
| if (eventType == XmlPullParser.END_TAG) { |
| if (parser.getName().equals(tagName)) { |
| name[0] = valueName; |
| return res; |
| } |
| throw new XmlPullParserException( |
| "Unexpected end tag in <" + tagName + ">: " + parser.getName()); |
| } else if (eventType == XmlPullParser.TEXT) { |
| throw new XmlPullParserException( |
| "Unexpected text in <" + tagName + ">: " + parser.getName()); |
| } else if (eventType == XmlPullParser.START_TAG) { |
| throw new XmlPullParserException( |
| "Unexpected start tag in <" + tagName + ">: " + parser.getName()); |
| } |
| } |
| throw new XmlPullParserException("Unexpected end of document in <" + tagName + ">"); |
| } |
| |
| private static final Object readThisPrimitiveValueXml(XmlPullParser parser, String tagName) |
| throws XmlPullParserException, java.io.IOException { |
| try { |
| if (tagName.equals("int")) { |
| return Integer.parseInt(parser.getAttributeValue(null, "value")); |
| } else if (tagName.equals("long")) { |
| return Long.valueOf(parser.getAttributeValue(null, "value")); |
| } else if (tagName.equals("float")) { |
| return Float.valueOf(parser.getAttributeValue(null, "value")); |
| } else if (tagName.equals("double")) { |
| return Double.valueOf(parser.getAttributeValue(null, "value")); |
| } else if (tagName.equals("boolean")) { |
| return Boolean.valueOf(parser.getAttributeValue(null, "value")); |
| } else { |
| return null; |
| } |
| } catch (NullPointerException e) { |
| throw new XmlPullParserException("Need value attribute in <" + tagName + ">"); |
| } catch (NumberFormatException e) { |
| throw new XmlPullParserException("Not a number in value attribute in <" + tagName + ">"); |
| } |
| } |
| |
| public interface ReadMapCallback { |
| |
| /** |
| * Called from readThisMapXml when a START_TAG is not recognized. The input stream is positioned |
| * within the start tag so that attributes can be read using in.getAttribute. |
| * |
| * @param in the XML input stream |
| * @param tag the START_TAG that was not recognized. |
| * @return the Object parsed from the stream which will be put into the map. |
| * @throws XmlPullParserException if the START_TAG is not recognized. |
| * @throws IOException on XmlPullParser serialization errors. |
| */ |
| Object readThisUnknownObjectXml(XmlPullParser in, String tag) |
| throws XmlPullParserException, IOException; |
| } |
| } |