| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.johnzon.core; |
| |
| import javax.json.JsonArray; |
| import javax.json.JsonObject; |
| import javax.json.stream.JsonParser; |
| import javax.json.stream.JsonParserFactory; |
| import java.io.InputStream; |
| import java.io.Reader; |
| import java.nio.charset.Charset; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.Map; |
| |
| import static java.util.Arrays.asList; |
| |
| public class JsonParserFactoryImpl extends AbstractJsonFactory implements JsonParserFactory { |
| public static final String MAX_STRING_LENGTH = "org.apache.johnzon.max-string-length"; |
| public static final int DEFAULT_MAX_STRING_LENGTH = Integer.getInteger(MAX_STRING_LENGTH, 256 * 1024); //256kB |
| |
| public static final String AUTO_ADJUST_STRING_BUFFER = "org.apache.johnzon.auto-adjust-buffer"; |
| public static final String BUFFER_LENGTH = "org.apache.johnzon.default-char-buffer"; |
| public static final int DEFAULT_BUFFER_LENGTH = Integer.getInteger(BUFFER_LENGTH, 64 * 1024); //64k |
| |
| public static final String SUPPORTS_COMMENTS = "org.apache.johnzon.supports-comments"; |
| public static final boolean DEFAULT_SUPPORTS_COMMENT = Boolean.getBoolean(SUPPORTS_COMMENTS); //default is false; |
| |
| static final Collection<String> SUPPORTED_CONFIG_KEYS = asList( |
| BUFFER_STRATEGY, MAX_STRING_LENGTH, BUFFER_LENGTH, SUPPORTS_COMMENTS, AUTO_ADJUST_STRING_BUFFER |
| ); |
| |
| private final int maxSize; |
| private final BufferStrategy.BufferProvider<char[]> bufferProvider; |
| private final BufferStrategy.BufferProvider<char[]> valueBufferProvider; |
| private final boolean supportsComments; |
| private final boolean autoAdjustBuffers; |
| |
| JsonParserFactoryImpl(final Map<String, ?> config) { |
| super(config, SUPPORTED_CONFIG_KEYS, null); |
| |
| final int bufferSize = getInt(BUFFER_LENGTH, DEFAULT_BUFFER_LENGTH); |
| if (bufferSize <= 0) { |
| throw new IllegalArgumentException("buffer length must be greater than zero"); |
| } |
| |
| this.maxSize = getInt(MAX_STRING_LENGTH, DEFAULT_MAX_STRING_LENGTH); |
| this.bufferProvider = getBufferProvider().newCharProvider(bufferSize); |
| this.valueBufferProvider = getBufferProvider().newCharProvider(maxSize); |
| this.supportsComments = getBool(SUPPORTS_COMMENTS, DEFAULT_SUPPORTS_COMMENT); |
| this.autoAdjustBuffers = getBool(AUTO_ADJUST_STRING_BUFFER, true); |
| } |
| |
| private JsonStreamParserImpl getDefaultJsonParserImpl(final InputStream in) { |
| if (supportsComments) { |
| return new CommentsJsonStreamParserImpl(in, maxSize, bufferProvider, valueBufferProvider, autoAdjustBuffers); |
| } |
| //UTF Auto detection RFC 4627 |
| return new JsonStreamParserImpl(in, maxSize, bufferProvider, valueBufferProvider, autoAdjustBuffers); |
| } |
| |
| private JsonStreamParserImpl getDefaultJsonParserImpl(final InputStream in, final Charset charset) { |
| if (supportsComments) { |
| return new CommentsJsonStreamParserImpl(in, charset, maxSize, bufferProvider, valueBufferProvider, autoAdjustBuffers); |
| } |
| //use provided charset |
| return new JsonStreamParserImpl(in, charset, maxSize, bufferProvider, valueBufferProvider, autoAdjustBuffers); |
| } |
| |
| private JsonStreamParserImpl getDefaultJsonParserImpl(final Reader in) { |
| if (supportsComments) { |
| return new CommentsJsonStreamParserImpl(in, maxSize, bufferProvider, valueBufferProvider, autoAdjustBuffers); |
| } |
| //no charset necessary |
| return new JsonStreamParserImpl(in, maxSize, bufferProvider, valueBufferProvider, autoAdjustBuffers); |
| } |
| |
| @Override |
| public JsonParser createParser(final Reader reader) { |
| return getDefaultJsonParserImpl(reader); |
| } |
| |
| @Override |
| public JsonParser createParser(final InputStream in) { |
| return getDefaultJsonParserImpl(in); |
| } |
| |
| @Override |
| public JsonParser createParser(final InputStream in, final Charset charset) { |
| return getDefaultJsonParserImpl(in, charset); |
| } |
| |
| @Override |
| public JsonParser createParser(final JsonObject obj) { |
| // no need of a comment version since JsonObject has no comment event |
| return new JsonInMemoryParser(obj); |
| } |
| |
| @Override |
| public JsonParser createParser(final JsonArray array) { |
| // no need of a comment version since JsonObject has no comment event |
| return new JsonInMemoryParser(array); |
| } |
| |
| @Override |
| public Map<String, ?> getConfigInUse() { |
| return Collections.unmodifiableMap(internalConfig); |
| } |
| |
| public JsonStreamParserImpl createInternalParser(final InputStream in) { |
| return getDefaultJsonParserImpl(in); |
| } |
| |
| public JsonStreamParserImpl createInternalParser(final InputStream in, final Charset charset) { |
| return getDefaultJsonParserImpl(in, charset); |
| } |
| |
| public JsonStreamParserImpl createInternalParser(final Reader reader) { |
| return getDefaultJsonParserImpl(reader); |
| } |
| } |