refactor source tree organization, switch to meson

src/api-impl/android/util/Xml.java

@@ -0,0 +1,180 @@
+/*
+ * Copyright (C) 2007 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 android.util;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.Reader;
+import java.io.StringReader;
+import java.io.UnsupportedEncodingException;
+import org.apache.harmony.xml.ExpatReader;
+import org.kxml2.io.KXmlParser;
+import org.xml.sax.ContentHandler;
+import org.xml.sax.InputSource;
+import org.xml.sax.SAXException;
+import org.xml.sax.XMLReader;
+import org.xmlpull.v1.XmlPullParser;
+import org.xmlpull.v1.XmlPullParserException;
+import org.xmlpull.v1.XmlPullParserFactory;
+import org.xmlpull.v1.XmlSerializer;
+
+/**
+ * XML utility methods.
+ */
+public class Xml {
+    /** @hide */ public Xml() {}
+
+    /**
+     * {@link org.xmlpull.v1.XmlPullParser} "relaxed" feature name.
+     *
+     * @see <a href="http://xmlpull.org/v1/doc/features.html#relaxed">
+     *  specification</a>
+     */
+    public static String FEATURE_RELAXED = "http://xmlpull.org/v1/doc/features.html#relaxed";
+
+    /**
+     * Parses the given xml string and fires events on the given SAX handler.
+     */
+    public static void parse(String xml, ContentHandler contentHandler)
+            throws SAXException {
+        try {
+            XMLReader reader = new ExpatReader();
+            reader.setContentHandler(contentHandler);
+            reader.parse(new InputSource(new StringReader(xml)));
+        } catch (IOException e) {
+            throw new AssertionError(e);
+        }
+    }
+
+    /**
+     * Parses xml from the given reader and fires events on the given SAX
+     * handler.
+     */
+    public static void parse(Reader in, ContentHandler contentHandler)
+            throws IOException, SAXException {
+        XMLReader reader = new ExpatReader();
+        reader.setContentHandler(contentHandler);
+        reader.parse(new InputSource(in));
+    }
+
+    /**
+     * Parses xml from the given input stream and fires events on the given SAX
+     * handler.
+     */
+    public static void parse(InputStream in, Encoding encoding,
+            ContentHandler contentHandler) throws IOException, SAXException {
+        XMLReader reader = new ExpatReader();
+        reader.setContentHandler(contentHandler);
+        InputSource source = new InputSource(in);
+        source.setEncoding(encoding.expatName);
+        reader.parse(source);
+    }
+
+    /**
+     * Returns a new pull parser with namespace support.
+     */
+    public static XmlPullParser newPullParser() {
+        try {
+            KXmlParser parser = new KXmlParser();
+            parser.setFeature(XmlPullParser.FEATURE_PROCESS_DOCDECL, true);
+            parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, true);
+            return parser;
+        } catch (XmlPullParserException e) {
+            throw new AssertionError();
+        }
+    }
+
+    /**
+     * Creates a new xml serializer.
+     */
+    public static XmlSerializer newSerializer() {
+        try {
+            return XmlSerializerFactory.instance.newSerializer();
+        } catch (XmlPullParserException e) {
+            throw new AssertionError(e);
+        }
+    }
+
+    /** Factory for xml serializers. Initialized on demand. */
+    static class XmlSerializerFactory {
+        static final String TYPE
+                = "org.kxml2.io.KXmlParser,org.kxml2.io.KXmlSerializer";
+        static final XmlPullParserFactory instance;
+        static {
+            try {
+                instance = XmlPullParserFactory.newInstance(TYPE, null);
+            } catch (XmlPullParserException e) {
+                throw new AssertionError(e);
+            }
+        }
+    }
+
+    /**
+     * Supported character encodings.
+     */
+    public enum Encoding {
+
+        US_ASCII("US-ASCII"),
+        UTF_8("UTF-8"),
+        UTF_16("UTF-16"),
+        ISO_8859_1("ISO-8859-1");
+
+        final String expatName;
+
+        Encoding(String expatName) {
+            this.expatName = expatName;
+        }
+    }
+
+    /**
+     * Finds an encoding by name. Returns UTF-8 if you pass {@code null}.
+     */
+    public static Encoding findEncodingByName(String encodingName)
+            throws UnsupportedEncodingException {
+        if (encodingName == null) {
+            return Encoding.UTF_8;
+        }
+
+        for (Encoding encoding : Encoding.values()) {
+            if (encoding.expatName.equalsIgnoreCase(encodingName))
+                return encoding;
+        }
+        throw new UnsupportedEncodingException(encodingName);
+    }
+
+    /**
+     * Return an AttributeSet interface for use with the given XmlPullParser.
+     * If the given parser itself implements AttributeSet, that implementation
+     * is simply returned.  Otherwise a wrapper class is
+     * instantiated on top of the XmlPullParser, as a proxy for retrieving its
+     * attributes, and returned to you.
+     *
+     * @param parser The existing parser for which you would like an
+     *               AttributeSet.
+     *
+     * @return An AttributeSet you can use to retrieve the
+     *         attribute values at each of the tags as the parser moves
+     *         through its XML document.
+     *
+     * @see AttributeSet
+     */
+    public static AttributeSet asAttributeSet(XmlPullParser parser) {
+        return (parser instanceof AttributeSet)
+                ? (AttributeSet) parser
+                : new XmlPullAttributes(parser);
+    }
+}