104 lines
3.4 KiB
Java
104 lines
3.4 KiB
Java
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.inputmethod.latin.utils;
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import android.util.JsonReader;
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import android.util.JsonWriter;
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import android.util.Log;
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import java.io.Closeable;
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import java.io.IOException;
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import java.io.StringReader;
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import java.io.StringWriter;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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public final class JsonUtils {
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private static final String TAG = JsonUtils.class.getSimpleName();
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private static final String INTEGER_CLASS_NAME = Integer.class.getSimpleName();
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private static final String STRING_CLASS_NAME = String.class.getSimpleName();
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private static final String EMPTY_STRING = "";
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public static List<Object> jsonStrToList(final String s) {
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final ArrayList<Object> list = new ArrayList<>();
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final JsonReader reader = new JsonReader(new StringReader(s));
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try {
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reader.beginArray();
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while (reader.hasNext()) {
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reader.beginObject();
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while (reader.hasNext()) {
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final String name = reader.nextName();
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if (name.equals(INTEGER_CLASS_NAME)) {
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list.add(reader.nextInt());
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} else if (name.equals(STRING_CLASS_NAME)) {
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list.add(reader.nextString());
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} else {
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Log.w(TAG, "Invalid name: " + name);
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reader.skipValue();
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}
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}
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reader.endObject();
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}
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reader.endArray();
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return list;
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} catch (final IOException e) {
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} finally {
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close(reader);
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}
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return Collections.<Object>emptyList();
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}
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public static String listToJsonStr(final List<Object> list) {
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if (list == null || list.isEmpty()) {
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return EMPTY_STRING;
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}
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final StringWriter sw = new StringWriter();
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final JsonWriter writer = new JsonWriter(sw);
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try {
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writer.beginArray();
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for (final Object o : list) {
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writer.beginObject();
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if (o instanceof Integer) {
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writer.name(INTEGER_CLASS_NAME).value((Integer)o);
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} else if (o instanceof String) {
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writer.name(STRING_CLASS_NAME).value((String)o);
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}
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writer.endObject();
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}
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writer.endArray();
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return sw.toString();
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} catch (final IOException e) {
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} finally {
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close(writer);
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}
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return EMPTY_STRING;
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}
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private static void close(final Closeable closeable) {
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try {
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if (closeable != null) {
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closeable.close();
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}
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} catch (final IOException e) {
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// Ignore
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}
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}
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}
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