1 files changed, 238 insertions, 0 deletions
diff --git a/java/com/android/voicemail/impl/utils/XmlUtils.java b/java/com/android/voicemail/impl/utils/XmlUtils.java
new file mode 100644
index 000000000..f5703f30f
--- /dev/null
+++ b/java/com/android/voicemail/impl/utils/XmlUtils.java
@@ -0,0 +1,238 @@
+/*
+ * 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;
+  }
+}