Arsnael commented on code in PR #2005: URL: https://github.com/apache/james-project/pull/2005#discussion_r1492216066
########## server/data/data-jmap/src/main/java/org/apache/james/jmap/mime4j/JamesBodyFactory.java: ########## @@ -0,0 +1,366 @@ +/**************************************************************** + * 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.james.jmap.mime4j; + +import java.io.IOException; +import java.io.InputStream; +import java.io.InputStreamReader; +import java.io.OutputStream; +import java.io.Reader; +import java.io.StringReader; +import java.io.UnsupportedEncodingException; +import java.nio.charset.Charset; +import java.nio.charset.IllegalCharsetNameException; +import java.nio.charset.UnsupportedCharsetException; + +import org.apache.james.mime4j.Charsets; +import org.apache.james.mime4j.dom.BinaryBody; +import org.apache.james.mime4j.dom.SingleBody; +import org.apache.james.mime4j.dom.TextBody; +import org.apache.james.mime4j.io.InputStreams; +import org.apache.james.mime4j.message.BasicBodyFactory; +import org.apache.james.mime4j.message.BodyFactory; +import org.apache.james.mime4j.util.ByteArrayOutputStreamRecycler; +import org.apache.james.mime4j.util.ContentUtil; + +import com.google.common.io.CountingOutputStream; + +/** + * Factory for creating message bodies. + */ +public class JamesBodyFactory implements BodyFactory { + + public static final BasicBodyFactory INSTANCE = new BasicBodyFactory(); + + private final Charset defaultCharset; + + public JamesBodyFactory() { + this(true); + } + + public JamesBodyFactory(final Charset defaultCharset) { + this.defaultCharset = defaultCharset; + } + + public JamesBodyFactory(final boolean lenient) { + this(lenient ? Charset.defaultCharset() : null); + } + + /** + * @return the defaultCharset + */ + public Charset getDefaultCharset() { + return defaultCharset; + } + + /** + * <p> + * Select the Charset for the given <code>mimeCharset</code> string. + * </p> + * <p> + * If you need support for non standard or invalid <code>mimeCharset</code> specifications you might want to + * create your own derived {@link BodyFactory} extending {@link BasicBodyFactory} and overriding this method as + * suggested by <a href="https://issues.apache.org/jira/browse/MIME4J-218";>MIME4J-218</a> + * </p> + * <p> + * The default behavior is lenient, invalid <code>mimeCharset</code> specifications will return the + * <code>defaultCharset</code>. + * </p> + * + * @param mimeCharset - the string specification for a Charset e.g. "UTF-8" + * @throws UnsupportedEncodingException if the mimeCharset is invalid + */ + protected Charset resolveCharset(final String mimeCharset) throws UnsupportedEncodingException { + if (mimeCharset != null) { + try { + return Charset.forName(mimeCharset); + } catch (UnsupportedCharsetException ex) { + if (defaultCharset == null) { + throw new UnsupportedEncodingException(mimeCharset); + } + } catch (IllegalCharsetNameException ex) { + if (defaultCharset == null) { + throw new UnsupportedEncodingException(mimeCharset); + } + } + } + return defaultCharset; + } + + public TextBody textBody(final String text, final String mimeCharset) throws UnsupportedEncodingException { + if (text == null) { + throw new IllegalArgumentException("Text may not be null"); + } + return new StringBody1(text, resolveCharset(mimeCharset)); + } + + public TextBody textBody(final byte[] content, final Charset charset) { + if (content == null) { + throw new IllegalArgumentException("Content may not be null"); + } + return new StringBody2(content, charset); + } + + public TextBody textBody(final InputStream content, final String mimeCharset) throws IOException { + if (content == null) { + throw new IllegalArgumentException("Input stream may not be null"); + } + return new StringBody3(ContentUtil.bufferEfficient(content), resolveCharset(mimeCharset)); + } + + public TextBody textBody(final String text, final Charset charset) { + if (text == null) { + throw new IllegalArgumentException("Text may not be null"); + } + return new StringBody1(text, charset); + } + + public TextBody textBody(final String text) { + return textBody(text, Charsets.DEFAULT_CHARSET); + } + + public BinaryBody binaryBody(final String content, final Charset charset) { + if (content == null) { + throw new IllegalArgumentException("Content may not be null"); + } + return new BinaryBody2(content, charset); + } + + public BinaryBody binaryBody(final InputStream is) throws IOException { + CountingOutputStream out = new CountingOutputStream(OutputStream.nullOutputStream()); + is.transferTo(out); + return new FakeBinaryBody(out.getCount()); + } + + public BinaryBody binaryBody(final byte[] buf) { + return new BinaryBody1(buf); + } + + static class StringBody1 extends TextBody { Review Comment: Copied from BasicBodyFactory form mime4j, makes kinda sense, forget this comment -- This is an automated message from the Apache Git Service. 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