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Diffstat (limited to 'apache/org/apache/james/mime4j/field/ContentTypeField.java')
| -rw-r--r-- | apache/org/apache/james/mime4j/field/ContentTypeField.java | 259 |
1 files changed, 259 insertions, 0 deletions
diff --git a/apache/org/apache/james/mime4j/field/ContentTypeField.java b/apache/org/apache/james/mime4j/field/ContentTypeField.java new file mode 100644 index 000000000..ad9f7f9ac --- /dev/null +++ b/apache/org/apache/james/mime4j/field/ContentTypeField.java @@ -0,0 +1,259 @@ +/**************************************************************** + * 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.mime4j.field; + +import java.io.StringReader; +import java.util.ArrayList; +import java.util.Collections; +import java.util.HashMap; +import java.util.Map; + +//BEGIN android-changed: Stubbing out logging +import org.apache.james.mime4j.Log; +import org.apache.james.mime4j.LogFactory; +//END android-changed +import org.apache.james.mime4j.field.contenttype.parser.ContentTypeParser; +import org.apache.james.mime4j.field.contenttype.parser.ParseException; +import org.apache.james.mime4j.field.contenttype.parser.TokenMgrError; + +/** + * Represents a <code>Content-Type</code> field. + * + * <p>TODO: Remove dependency on Java 1.4 regexps</p> + * + * + * @version $Id: ContentTypeField.java,v 1.6 2005/01/27 14:16:31 ntherning Exp $ + */ +public class ContentTypeField extends Field { + + /** + * The prefix of all <code>multipart</code> MIME types. + */ + public static final String TYPE_MULTIPART_PREFIX = "multipart/"; + /** + * The <code>multipart/digest</code> MIME type. + */ + public static final String TYPE_MULTIPART_DIGEST = "multipart/digest"; + /** + * The <code>text/plain</code> MIME type. + */ + public static final String TYPE_TEXT_PLAIN = "text/plain"; + /** + * The <code>message/rfc822</code> MIME type. + */ + public static final String TYPE_MESSAGE_RFC822 = "message/rfc822"; + /** + * The name of the <code>boundary</code> parameter. + */ + public static final String PARAM_BOUNDARY = "boundary"; + /** + * The name of the <code>charset</code> parameter. + */ + public static final String PARAM_CHARSET = "charset"; + + private String mimeType = ""; + private Map<String, String> parameters = null; + private ParseException parseException; + + protected ContentTypeField(String name, String body, String raw, String mimeType, Map<String, String> parameters, ParseException parseException) { + super(name, body, raw); + this.mimeType = mimeType; + this.parameters = parameters; + this.parseException = parseException; + } + + /** + * Gets the exception that was raised during parsing of + * the field value, if any; otherwise, null. + */ + public ParseException getParseException() { + return parseException; + } + + /** + * Gets the MIME type defined in this Content-Type field. + * + * @return the MIME type or an empty string if not set. + */ + public String getMimeType() { + return mimeType; + } + + /** + * Gets the MIME type defined in the child's + * Content-Type field or derives a MIME type from the parent + * if child is <code>null</code> or hasn't got a MIME type value set. + * If child's MIME type is multipart but no boundary + * has been set the MIME type of child will be derived from + * the parent. + * + * @param child the child. + * @param parent the parent. + * @return the MIME type. + */ + public static String getMimeType(ContentTypeField child, + ContentTypeField parent) { + + if (child == null || child.getMimeType().length() == 0 + || child.isMultipart() && child.getBoundary() == null) { + + if (parent != null && parent.isMimeType(TYPE_MULTIPART_DIGEST)) { + return TYPE_MESSAGE_RFC822; + } else { + return TYPE_TEXT_PLAIN; + } + } + + return child.getMimeType(); + } + + /** + * Gets the value of a parameter. Parameter names are case-insensitive. + * + * @param name the name of the parameter to get. + * @return the parameter value or <code>null</code> if not set. + */ + public String getParameter(String name) { + return parameters != null + ? parameters.get(name.toLowerCase()) + : null; + } + + /** + * Gets all parameters. + * + * @return the parameters. + */ + public Map<String, String> getParameters() { + if (parameters != null) { + return Collections.unmodifiableMap(parameters); + } + return Collections.emptyMap(); + } + + /** + * Gets the value of the <code>boundary</code> parameter if set. + * + * @return the <code>boundary</code> parameter value or <code>null</code> + * if not set. + */ + public String getBoundary() { + return getParameter(PARAM_BOUNDARY); + } + + /** + * Gets the value of the <code>charset</code> parameter if set. + * + * @return the <code>charset</code> parameter value or <code>null</code> + * if not set. + */ + public String getCharset() { + return getParameter(PARAM_CHARSET); + } + + /** + * Gets the value of the <code>charset</code> parameter if set for the + * given field. Returns the default <code>us-ascii</code> if not set or if + * <code>f</code> is <code>null</code>. + * + * @return the <code>charset</code> parameter value. + */ + public static String getCharset(ContentTypeField f) { + if (f != null) { + if (f.getCharset() != null && f.getCharset().length() > 0) { + return f.getCharset(); + } + } + return "us-ascii"; + } + + /** + * Determines if the MIME type of this field matches the given one. + * + * @param mimeType the MIME type to match against. + * @return <code>true</code> if the MIME type of this field matches, + * <code>false</code> otherwise. + */ + public boolean isMimeType(String mimeType) { + return this.mimeType.equalsIgnoreCase(mimeType); + } + + /** + * Determines if the MIME type of this field is <code>multipart/*</code>. + * + * @return <code>true</code> if this field is has a <code>multipart/*</code> + * MIME type, <code>false</code> otherwise. + */ + public boolean isMultipart() { + return mimeType.startsWith(TYPE_MULTIPART_PREFIX); + } + + public static class Parser implements FieldParser { + private static Log log = LogFactory.getLog(Parser.class); + + public Field parse(final String name, final String body, final String raw) { + ParseException parseException = null; + String mimeType = ""; + Map<String, String> parameters = null; + + ContentTypeParser parser = new ContentTypeParser(new StringReader(body)); + try { + parser.parseAll(); + } + catch (ParseException e) { + if (log.isDebugEnabled()) { + log.debug("Parsing value '" + body + "': "+ e.getMessage()); + } + parseException = e; + } + catch (TokenMgrError e) { + if (log.isDebugEnabled()) { + log.debug("Parsing value '" + body + "': "+ e.getMessage()); + } + parseException = new ParseException(e.getMessage()); + } + + try { + final String type = parser.getType(); + final String subType = parser.getSubType(); + + if (type != null && subType != null) { + mimeType = (type + "/" + parser.getSubType()).toLowerCase(); + + ArrayList<String> paramNames = parser.getParamNames(); + ArrayList<String> paramValues = parser.getParamValues(); + + if (paramNames != null && paramValues != null) { + for (int i = 0; i < paramNames.size() && i < paramValues.size(); i++) { + if (parameters == null) + parameters = new HashMap<String, String>((int)(paramNames.size() * 1.3 + 1)); + String paramName = paramNames.get(i).toLowerCase(); + String paramValue = paramValues.get(i); + parameters.put(paramName, paramValue); + } + } + } + } + catch (NullPointerException npe) { + } + return new ContentTypeField(name, body, raw, mimeType, parameters, parseException); + } + } +} |