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Diffstat (limited to 'java/com/android/voicemailomtp/src/org/apache/james/mime4j/field/Field.java')
| -rw-r--r-- | java/com/android/voicemailomtp/src/org/apache/james/mime4j/field/Field.java | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/java/com/android/voicemailomtp/src/org/apache/james/mime4j/field/Field.java b/java/com/android/voicemailomtp/src/org/apache/james/mime4j/field/Field.java new file mode 100644 index 000000000..4dea5c5cf --- /dev/null +++ b/java/com/android/voicemailomtp/src/org/apache/james/mime4j/field/Field.java @@ -0,0 +1,192 @@ +/**************************************************************** + * 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.util.regex.Matcher; +import java.util.regex.Pattern; + +/** + * The base class of all field classes. + * + * + * @version $Id: Field.java,v 1.6 2004/10/25 07:26:46 ntherning Exp $ + */ +public abstract class Field { + public static final String SENDER = "Sender"; + public static final String FROM = "From"; + public static final String TO = "To"; + public static final String CC = "Cc"; + public static final String BCC = "Bcc"; + public static final String REPLY_TO = "Reply-To"; + public static final String RESENT_SENDER = "Resent-Sender"; + public static final String RESENT_FROM = "Resent-From"; + public static final String RESENT_TO = "Resent-To"; + public static final String RESENT_CC = "Resent-Cc"; + public static final String RESENT_BCC = "Resent-Bcc"; + + public static final String DATE = "Date"; + public static final String RESENT_DATE = "Resent-Date"; + + public static final String SUBJECT = "Subject"; + public static final String CONTENT_TYPE = "Content-Type"; + public static final String CONTENT_TRANSFER_ENCODING = + "Content-Transfer-Encoding"; + + private static final String FIELD_NAME_PATTERN = + "^([\\x21-\\x39\\x3b-\\x7e]+)[ \t]*:"; + private static final Pattern fieldNamePattern = + Pattern.compile(FIELD_NAME_PATTERN); + + private static final DefaultFieldParser parser = new DefaultFieldParser(); + + private final String name; + private final String body; + private final String raw; + + protected Field(final String name, final String body, final String raw) { + this.name = name; + this.body = body; + this.raw = raw; + } + + /** + * Parses the given string and returns an instance of the + * <code>Field</code> class. The type of the class returned depends on + * the field name: + * <table> + * <tr> + * <td><em>Field name</em></td><td><em>Class returned</em></td> + * <td>Content-Type</td><td>org.apache.james.mime4j.field.ContentTypeField</td> + * <td>other</td><td>org.apache.james.mime4j.field.UnstructuredField</td> + * </tr> + * </table> + * + * @param s the string to parse. + * @return a <code>Field</code> instance. + * @throws IllegalArgumentException on parse errors. + */ + public static Field parse(final String raw) { + + /* + * Unfold the field. + */ + final String unfolded = raw.replaceAll("\r|\n", ""); + + /* + * Split into name and value. + */ + final Matcher fieldMatcher = fieldNamePattern.matcher(unfolded); + if (!fieldMatcher.find()) { + throw new IllegalArgumentException("Invalid field in string"); + } + final String name = fieldMatcher.group(1); + + String body = unfolded.substring(fieldMatcher.end()); + if (body.length() > 0 && body.charAt(0) == ' ') { + body = body.substring(1); + } + + return parser.parse(name, body, raw); + } + + /** + * Gets the default parser used to parse fields. + * @return the default field parser + */ + public static DefaultFieldParser getParser() { + return parser; + } + + /** + * Gets the name of the field (<code>Subject</code>, + * <code>From</code>, etc). + * + * @return the field name. + */ + public String getName() { + return name; + } + + /** + * Gets the original raw field string. + * + * @return the original raw field string. + */ + public String getRaw() { + return raw; + } + + /** + * Gets the unfolded, unparsed and possibly encoded (see RFC 2047) field + * body string. + * + * @return the unfolded unparsed field body string. + */ + public String getBody() { + return body; + } + + /** + * Determines if this is a <code>Content-Type</code> field. + * + * @return <code>true</code> if this is a <code>Content-Type</code> field, + * <code>false</code> otherwise. + */ + public boolean isContentType() { + return CONTENT_TYPE.equalsIgnoreCase(name); + } + + /** + * Determines if this is a <code>Subject</code> field. + * + * @return <code>true</code> if this is a <code>Subject</code> field, + * <code>false</code> otherwise. + */ + public boolean isSubject() { + return SUBJECT.equalsIgnoreCase(name); + } + + /** + * Determines if this is a <code>From</code> field. + * + * @return <code>true</code> if this is a <code>From</code> field, + * <code>false</code> otherwise. + */ + public boolean isFrom() { + return FROM.equalsIgnoreCase(name); + } + + /** + * Determines if this is a <code>To</code> field. + * + * @return <code>true</code> if this is a <code>To</code> field, + * <code>false</code> otherwise. + */ + public boolean isTo() { + return TO.equalsIgnoreCase(name); + } + + /** + * @see #getRaw() + */ + public String toString() { + return raw; + } +} |