core: Move FastXmlSerializer to module utils (3101a113) · Commits · e / os / android_frameworks_base

Android.bp

+1 −0

Original line number	Diff line number	Diff line
		@@ -396,6 +396,7 @@ java_defaults {
		"soundtrigger_middleware-aidl-java",
		"modules-utils-binary-xml",
		"modules-utils-build",
		"modules-utils-fastxmlserializer",
		"modules-utils-preconditions",
		"modules-utils-statemachine",
		"modules-utils-synchronous-result-receiver",

apex/jobscheduler/service/Android.bp

+4 −0

Original line number	Diff line number	Diff line
		@@ -26,6 +26,10 @@ java_library {
		"unsupportedappusage",
		],

		static_libs: [
		"modules-utils-fastxmlserializer",
		],

		// Rename classes shared with the framework
		jarjar_rules: "jarjar-rules.txt",

core/java/Android.bp

+0 −3

Original line number	Diff line number	Diff line
		@@ -226,7 +226,6 @@ filegroup {
		"com/android/internal/util/ConcurrentUtils.java",
		"com/android/internal/util/DumpUtils.java",
		"com/android/internal/util/FastPrintWriter.java",
		"com/android/internal/util/FastXmlSerializer.java",
		"com/android/internal/util/FunctionalUtils.java",
		"com/android/internal/util/ParseUtils.java",
		"com/android/internal/util/RingBufferIndices.java",
		@@ -455,7 +454,6 @@ filegroup {
		"com/android/internal/util/AsyncChannel.java",
		"com/android/internal/util/AsyncService.java",
		"com/android/internal/util/BitwiseInputStream.java",
		"com/android/internal/util/FastXmlSerializer.java",
		"com/android/internal/util/HexDump.java",
		"com/android/internal/util/IndentingPrintWriter.java",
		"com/android/internal/util/UserIcons.java",
		@@ -505,7 +503,6 @@ filegroup {
		"android/net/InterfaceConfiguration.java",
		"android/util/BackupUtils.java",
		"android/util/Rational.java",
		"com/android/internal/util/FastXmlSerializer.java",
		"com/android/internal/util/HexDump.java",
		"com/android/internal/util/MessageUtils.java",
		"com/android/internal/util/WakeupMessage.java",

core/java/com/android/internal/util/FastXmlSerializer.java

deleted100644 → 0

+0 −424

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2006 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.internal.util;

		import android.compat.annotation.UnsupportedAppUsage;

		import org.xmlpull.v1.XmlSerializer;

		import java.io.IOException;
		import java.io.OutputStream;
		import java.io.OutputStreamWriter;
		import java.io.UnsupportedEncodingException;
		import java.io.Writer;
		import java.nio.ByteBuffer;
		import java.nio.CharBuffer;
		import java.nio.charset.Charset;
		import java.nio.charset.CharsetEncoder;
		import java.nio.charset.CoderResult;
		import java.nio.charset.CodingErrorAction;
		import java.nio.charset.IllegalCharsetNameException;
		import java.nio.charset.UnsupportedCharsetException;

		/**
		* This is a quick and dirty implementation of XmlSerializer that isn't horribly
		* painfully slow like the normal one. It only does what is needed for the
		* specific XML files being written with it.
		*/
		public class FastXmlSerializer implements XmlSerializer {
		private static final String ESCAPE_TABLE[] = new String[] {
		"", "", "", "", "", "", "", "", // 0-7
		"", " ", " ", "", "", " ", "", "", // 8-15
		"", "", "", "", "", "", "", "", // 16-23
		"", "", "", "", "", "", "", "", // 24-31
		null, null, """, null, null, null, "&", null, // 32-39
		null, null, null, null, null, null, null, null, // 40-47
		null, null, null, null, null, null, null, null, // 48-55
		null, null, null, null, "<", null, ">", null, // 56-63
		};

		private static final int DEFAULT_BUFFER_LEN = 32*1024;

		private static String sSpace = " ";

		private final int mBufferLen;
		private final char[] mText;
		private int mPos;

		private Writer mWriter;

		private OutputStream mOutputStream;
		private CharsetEncoder mCharset;
		private ByteBuffer mBytes;

		private boolean mIndent = false;
		private boolean mInTag;

		private int mNesting = 0;
		private boolean mLineStart = true;

		@UnsupportedAppUsage
		public FastXmlSerializer() {
		this(DEFAULT_BUFFER_LEN);
		}

		/**
		* Allocate a FastXmlSerializer with the given internal output buffer size. If the
		* size is zero or negative, then the default buffer size will be used.
		*
		* @param bufferSize Size in bytes of the in-memory output buffer that the writer will use.
		*/
		public FastXmlSerializer(int bufferSize) {
		mBufferLen = (bufferSize > 0) ? bufferSize : DEFAULT_BUFFER_LEN;
		mText = new char[mBufferLen];
		mBytes = ByteBuffer.allocate(mBufferLen);
		}

		private void append(char c) throws IOException {
		int pos = mPos;
		if (pos >= (mBufferLen-1)) {
		flush();
		pos = mPos;
		}
		mText[pos] = c;
		mPos = pos+1;
		}

		private void append(String str, int i, final int length) throws IOException {
		if (length > mBufferLen) {
		final int end = i + length;
		while (i < end) {
		int next = i + mBufferLen;
		append(str, i, next<end ? mBufferLen : (end-i));
		i = next;
		}
		return;
		}
		int pos = mPos;
		if ((pos+length) > mBufferLen) {
		flush();
		pos = mPos;
		}
		str.getChars(i, i+length, mText, pos);
		mPos = pos + length;
		}

		private void append(char[] buf, int i, final int length) throws IOException {
		if (length > mBufferLen) {
		final int end = i + length;
		while (i < end) {
		int next = i + mBufferLen;
		append(buf, i, next<end ? mBufferLen : (end-i));
		i = next;
		}
		return;
		}
		int pos = mPos;
		if ((pos+length) > mBufferLen) {
		flush();
		pos = mPos;
		}
		System.arraycopy(buf, i, mText, pos, length);
		mPos = pos + length;
		}

		private void append(String str) throws IOException {
		append(str, 0, str.length());
		}

		private void appendIndent(int indent) throws IOException {
		indent *= 4;
		if (indent > sSpace.length()) {
		indent = sSpace.length();
		}
		append(sSpace, 0, indent);
		}

		private void escapeAndAppendString(final String string) throws IOException {
		final int N = string.length();
		final char NE = (char)ESCAPE_TABLE.length;
		final String[] escapes = ESCAPE_TABLE;
		int lastPos = 0;
		int pos;
		for (pos=0; pos<N; pos++) {
		char c = string.charAt(pos);
		if (c >= NE) continue;
		String escape = escapes[c];
		if (escape == null) continue;
		if (lastPos < pos) append(string, lastPos, pos-lastPos);
		lastPos = pos + 1;
		append(escape);
		}
		if (lastPos < pos) append(string, lastPos, pos-lastPos);
		}

		private void escapeAndAppendString(char[] buf, int start, int len) throws IOException {
		final char NE = (char)ESCAPE_TABLE.length;
		final String[] escapes = ESCAPE_TABLE;
		int end = start+len;
		int lastPos = start;
		int pos;
		for (pos=start; pos<end; pos++) {
		char c = buf[pos];
		if (c >= NE) continue;
		String escape = escapes[c];
		if (escape == null) continue;
		if (lastPos < pos) append(buf, lastPos, pos-lastPos);
		lastPos = pos + 1;
		append(escape);
		}
		if (lastPos < pos) append(buf, lastPos, pos-lastPos);
		}

		public XmlSerializer attribute(String namespace, String name, String value) throws IOException,
		IllegalArgumentException, IllegalStateException {
		append(' ');
		if (namespace != null) {
		append(namespace);
		append(':');
		}
		append(name);
		append("=\"");

		escapeAndAppendString(value);
		append('"');
		mLineStart = false;
		return this;
		}

		public void cdsect(String text) throws IOException, IllegalArgumentException,
		IllegalStateException {
		throw new UnsupportedOperationException();
		}

		public void comment(String text) throws IOException, IllegalArgumentException,
		IllegalStateException {
		throw new UnsupportedOperationException();
		}

		public void docdecl(String text) throws IOException, IllegalArgumentException,
		IllegalStateException {
		throw new UnsupportedOperationException();
		}

		public void endDocument() throws IOException, IllegalArgumentException, IllegalStateException {
		flush();
		}

		public XmlSerializer endTag(String namespace, String name) throws IOException,
		IllegalArgumentException, IllegalStateException {
		mNesting--;
		if (mInTag) {
		append(" />\n");
		} else {
		if (mIndent && mLineStart) {
		appendIndent(mNesting);
		}
		append("</");
		if (namespace != null) {
		append(namespace);
		append(':');
		}
		append(name);
		append(">\n");
		}
		mLineStart = true;
		mInTag = false;
		return this;
		}

		public void entityRef(String text) throws IOException, IllegalArgumentException,
		IllegalStateException {
		throw new UnsupportedOperationException();
		}

		private void flushBytes() throws IOException {
		int position;
		if ((position = mBytes.position()) > 0) {
		mBytes.flip();
		mOutputStream.write(mBytes.array(), 0, position);
		mBytes.clear();
		}
		}

		public void flush() throws IOException {
		//Log.i("PackageManager", "flush mPos=" + mPos);
		if (mPos > 0) {
		if (mOutputStream != null) {
		CharBuffer charBuffer = CharBuffer.wrap(mText, 0, mPos);
		CoderResult result = mCharset.encode(charBuffer, mBytes, true);
		while (true) {
		if (result.isError()) {
		throw new IOException(result.toString());
		} else if (result.isOverflow()) {
		flushBytes();
		result = mCharset.encode(charBuffer, mBytes, true);
		continue;
		}
		break;
		}
		flushBytes();
		mOutputStream.flush();
		} else {
		mWriter.write(mText, 0, mPos);
		mWriter.flush();
		}
		mPos = 0;
		}
		}

		public int getDepth() {
		throw new UnsupportedOperationException();
		}

		public boolean getFeature(String name) {
		throw new UnsupportedOperationException();
		}

		public String getName() {
		throw new UnsupportedOperationException();
		}

		public String getNamespace() {
		throw new UnsupportedOperationException();
		}

		public String getPrefix(String namespace, boolean generatePrefix)
		throws IllegalArgumentException {
		throw new UnsupportedOperationException();
		}

		public Object getProperty(String name) {
		throw new UnsupportedOperationException();
		}

		public void ignorableWhitespace(String text) throws IOException, IllegalArgumentException,
		IllegalStateException {
		throw new UnsupportedOperationException();
		}

		public void processingInstruction(String text) throws IOException, IllegalArgumentException,
		IllegalStateException {
		throw new UnsupportedOperationException();
		}

		public void setFeature(String name, boolean state) throws IllegalArgumentException,
		IllegalStateException {
		if (name.equals("http://xmlpull.org/v1/doc/features.html#indent-output")) {
		mIndent = true;
		return;
		}
		throw new UnsupportedOperationException();
		}

		public void setOutput(OutputStream os, String encoding) throws IOException,
		IllegalArgumentException, IllegalStateException {
		if (os == null)
		throw new IllegalArgumentException();
		if (true) {
		try {
		mCharset = Charset.forName(encoding).newEncoder()
		.onMalformedInput(CodingErrorAction.REPLACE)
		.onUnmappableCharacter(CodingErrorAction.REPLACE);
		} catch (IllegalCharsetNameException e) {
		throw (UnsupportedEncodingException) (new UnsupportedEncodingException(
		encoding).initCause(e));
		} catch (UnsupportedCharsetException e) {
		throw (UnsupportedEncodingException) (new UnsupportedEncodingException(
		encoding).initCause(e));
		}
		mOutputStream = os;
		} else {
		setOutput(
		encoding == null
		? new OutputStreamWriter(os)
		: new OutputStreamWriter(os, encoding));
		}
		}

		public void setOutput(Writer writer) throws IOException, IllegalArgumentException,
		IllegalStateException {
		mWriter = writer;
		}

		public void setPrefix(String prefix, String namespace) throws IOException,
		IllegalArgumentException, IllegalStateException {
		throw new UnsupportedOperationException();
		}

		public void setProperty(String name, Object value) throws IllegalArgumentException,
		IllegalStateException {
		throw new UnsupportedOperationException();
		}

		public void startDocument(String encoding, Boolean standalone) throws IOException,
		IllegalArgumentException, IllegalStateException {
		append("<?xml version='1.0' encoding='utf-8'");
		if (standalone != null) {
		append(" standalone='" + (standalone ? "yes" : "no") + "'");
		}
		append(" ?>\n");
		mLineStart = true;
		}

		public XmlSerializer startTag(String namespace, String name) throws IOException,
		IllegalArgumentException, IllegalStateException {
		if (mInTag) {
		append(">\n");
		}
		if (mIndent) {
		appendIndent(mNesting);
		}
		mNesting++;
		append('<');
		if (namespace != null) {
		append(namespace);
		append(':');
		}
		append(name);
		mInTag = true;
		mLineStart = false;
		return this;
		}

		public XmlSerializer text(char[] buf, int start, int len) throws IOException,
		IllegalArgumentException, IllegalStateException {
		if (mInTag) {
		append(">");
		mInTag = false;
		}
		escapeAndAppendString(buf, start, len);
		if (mIndent) {
		mLineStart = buf[start+len-1] == '\n';
		}
		return this;
		}

		public XmlSerializer text(String text) throws IOException, IllegalArgumentException,
		IllegalStateException {
		if (mInTag) {
		append(">");
		mInTag = false;
		}
		escapeAndAppendString(text);
		if (mIndent) {
		mLineStart = text.length() > 0 && (text.charAt(text.length()-1) == '\n');
		}
		return this;
		}

		}