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* 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.imap.decode.parser;
import java.nio.charset.Charset;
import java.nio.charset.IllegalCharsetNameException;
import java.nio.charset.UnsupportedCharsetException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.apache.james.imap.api.ImapCommand;
import org.apache.james.imap.api.ImapConstants;
import org.apache.james.imap.api.ImapMessage;
import org.apache.james.imap.api.display.CharsetUtil;
import org.apache.james.imap.api.display.HumanReadableText;
import org.apache.james.imap.api.message.IdRange;
import org.apache.james.imap.api.message.request.DayMonthYear;
import org.apache.james.imap.api.message.request.SearchKey;
import org.apache.james.imap.api.message.request.SearchOperation;
import org.apache.james.imap.api.message.request.SearchResultOption;
import org.apache.james.imap.api.message.response.StatusResponse;
import org.apache.james.imap.api.message.response.StatusResponseFactory;
import org.apache.james.imap.api.message.response.StatusResponse.ResponseCode;
import org.apache.james.imap.api.process.ImapSession;
import org.apache.james.imap.decode.ImapRequestLineReader;
import org.apache.james.imap.decode.DecodingException;
import org.apache.james.imap.message.request.SearchRequest;
/**
* Parse SEARCH commands
*/
public class SearchCommandParser extends AbstractUidCommandParser {
public SearchCommandParser() {
super(ImapCommand.selectedStateCommand(ImapConstants.SEARCH_COMMAND_NAME));
}
/**
* Parses the request argument into a valid search term.
*
* @param request
* <code>ImapRequestLineReader</code>, not null
* @param charset
* <code>Charset</code> or null if there is no charset
* @param isFirstToken
* true when this is the first token read, false otherwise
*/
protected SearchKey searchKey(ImapSession session, ImapRequestLineReader request, Charset charset, boolean isFirstToken) throws DecodingException, IllegalCharsetNameException, UnsupportedCharsetException {
final char next = request.nextChar();
if (next >= '0' && next <= '9' || next == '*' || next == '$') {
return sequenceSet(session, request);
} else if (next == '(') {
return paren(session, request, charset);
} else {
final int cap = consumeAndCap(request);
switch (cap) {
case 'A':
return a(request);
case 'B':
return b(request, charset);
case 'C':
return c(session, request, isFirstToken, charset);
case 'D':
return d(request);
case 'E':
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
case 'F':
return f(request, charset);
case 'G':
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
case 'H':
return header(request, charset);
case 'I':
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
case 'J':
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
case 'K':
return keyword(request);
case 'L':
return larger(request);
case 'M':
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
case 'N':
return n(session, request, charset);
case 'O':
return o(session, request, charset);
case 'P':
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
case 'Q':
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
case 'R':
nextIsE(request);
nextIsC(request);
return recent(request);
case 'S':
return s(request, charset);
case 'T':
return t(request, charset);
case 'U':
return u(request);
case 'Y':
return younger(request);
default:
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
}
}
}
private SearchKey paren(ImapSession session, ImapRequestLineReader request, Charset charset) throws DecodingException {
request.consume();
List<SearchKey> keys = new ArrayList<SearchKey>();
addUntilParen(session, request, keys, charset);
return SearchKey.buildAnd(keys);
}
private void addUntilParen(ImapSession session, ImapRequestLineReader request, List<SearchKey> keys, Charset charset) throws DecodingException {
final char next = request.nextWordChar();
if (next == ')') {
request.consume();
} else {
final SearchKey key = searchKey(session, request, null, false);
keys.add(key);
addUntilParen(session, request, keys, charset);
}
}
private int consumeAndCap(ImapRequestLineReader request) throws DecodingException {
final char next = request.consume();
return cap(next);
}
private int cap(char next) {
final int cap = next > 'Z' ? next ^ 32 : next;
return cap;
}
private SearchKey cc(ImapRequestLineReader request, final Charset charset) throws DecodingException {
final SearchKey result;
nextIsSpace(request);
final String value = request.astring(charset);
result = SearchKey.buildCc(value);
return result;
}
private SearchKey c(ImapSession session, ImapRequestLineReader request, final boolean isFirstToken, final Charset charset) throws DecodingException, IllegalCharsetNameException, UnsupportedCharsetException {
final int next = consumeAndCap(request);
switch (next) {
case 'C':
return cc(request, charset);
case 'H':
return charset(session, request, isFirstToken);
default:
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
}
}
private SearchKey charset(ImapSession session, ImapRequestLineReader request, final boolean isFirstToken) throws DecodingException, IllegalCharsetNameException, UnsupportedCharsetException {
final SearchKey result;
nextIsA(request);
nextIsR(request);
nextIsS(request);
nextIsE(request);
nextIsT(request);
nextIsSpace(request);
if (!isFirstToken) {
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
}
final String value = request.astring();
final Charset charset = Charset.forName(value);
request.nextWordChar();
result = searchKey(session, request, charset, false);
return result;
}
private SearchKey u(ImapRequestLineReader request) throws DecodingException {
final int next = consumeAndCap(request);
switch (next) {
case 'I':
return uid(request);
case 'N':
return un(request);
default:
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
}
}
private SearchKey un(ImapRequestLineReader request) throws DecodingException {
final int next = consumeAndCap(request);
switch (next) {
case 'A':
return unanswered(request);
case 'D':
return und(request);
case 'F':
return unflagged(request);
case 'K':
return unkeyword(request);
case 'S':
return unseen(request);
default:
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
}
}
private SearchKey und(ImapRequestLineReader request) throws DecodingException {
final int next = consumeAndCap(request);
switch (next) {
case 'E':
return undeleted(request);
case 'R':
return undraft(request);
default:
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
}
}
private SearchKey t(ImapRequestLineReader request, final Charset charset) throws DecodingException {
final int next = consumeAndCap(request);
switch (next) {
case 'E':
return text(request, charset);
case 'O':
return to(request, charset);
default:
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
}
}
private SearchKey s(ImapRequestLineReader request, final Charset charset) throws DecodingException {
final int next = consumeAndCap(request);
switch (next) {
case 'E':
return se(request);
case 'I':
return since(request);
case 'M':
return smaller(request);
case 'U':
return subject(request, charset);
default:
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
}
}
private SearchKey se(ImapRequestLineReader request) throws DecodingException {
final int next = consumeAndCap(request);
switch (next) {
case 'E':
return seen(request);
case 'N':
return sen(request);
default:
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
}
}
private SearchKey sen(ImapRequestLineReader request) throws DecodingException {
final int next = consumeAndCap(request);
switch (next) {
case 'T':
return sent(request);
default:
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
}
}
private SearchKey sent(ImapRequestLineReader request) throws DecodingException {
final int next = consumeAndCap(request);
switch (next) {
case 'B':
return sentBefore(request);
case 'O':
return sentOn(request);
case 'S':
return sentSince(request);
default:
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
}
}
private SearchKey o(ImapSession session, ImapRequestLineReader request, Charset charset) throws DecodingException {
final int next = consumeAndCap(request);
switch (next) {
case 'L':
return old(request);
case 'N':
return on(request);
case 'R':
return or(session, request, charset);
default:
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
}
}
private SearchKey old(ImapRequestLineReader request) throws DecodingException {
nextIsD(request);
try {
// Check if its OLDER keyword
nextIsE(request);
return older(request);
} catch (DecodingException e) {
return SearchKey.buildOld();
}
}
private SearchKey n(ImapSession session, ImapRequestLineReader request, Charset charset) throws DecodingException {
final int next = consumeAndCap(request);
switch (next) {
case 'E':
return _new(request);
case 'O':
return not(session, request, charset);
default:
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
}
}
private SearchKey f(ImapRequestLineReader request, final Charset charset) throws DecodingException {
final int next = consumeAndCap(request);
switch (next) {
case 'L':
return flagged(request);
case 'R':
return from(request, charset);
default:
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
}
}
private SearchKey d(ImapRequestLineReader request) throws DecodingException {
final int next = consumeAndCap(request);
switch (next) {
case 'E':
return deleted(request);
case 'R':
return draft(request);
default:
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
}
}
private SearchKey keyword(ImapRequestLineReader request) throws DecodingException {
final SearchKey result;
nextIsE(request);
nextIsY(request);
nextIsW(request);
nextIsO(request);
nextIsR(request);
nextIsD(request);
nextIsSpace(request);
final String value = request.atom();
result = SearchKey.buildKeyword(value);
return result;
}
private SearchKey unkeyword(ImapRequestLineReader request) throws DecodingException {
final SearchKey result;
nextIsE(request);
nextIsY(request);
nextIsW(request);
nextIsO(request);
nextIsR(request);
nextIsD(request);
nextIsSpace(request);
final String value = request.atom();
result = SearchKey.buildUnkeyword(value);
return result;
}
private SearchKey header(ImapRequestLineReader request, final Charset charset) throws DecodingException {
final SearchKey result;
nextIsE(request);
nextIsA(request);
nextIsD(request);
nextIsE(request);
nextIsR(request);
nextIsSpace(request);
final String field = request.astring(charset);
nextIsSpace(request);
final String value = request.astring(charset);
result = SearchKey.buildHeader(field, value);
return result;
}
private SearchKey larger(ImapRequestLineReader request) throws DecodingException {
final SearchKey result;
nextIsA(request);
nextIsR(request);
nextIsG(request);
nextIsE(request);
nextIsR(request);
nextIsSpace(request);
final long value = request.number();
result = SearchKey.buildLarger(value);
return result;
}
private SearchKey smaller(ImapRequestLineReader request) throws DecodingException {
final SearchKey result;
nextIsA(request);
nextIsL(request);
nextIsL(request);
nextIsE(request);
nextIsR(request);
nextIsSpace(request);
final long value = request.number();
result = SearchKey.buildSmaller(value);
return result;
}
private SearchKey from(ImapRequestLineReader request, final Charset charset) throws DecodingException {
final SearchKey result;
nextIsO(request);
nextIsM(request);
nextIsSpace(request);
final String value = request.astring(charset);
result = SearchKey.buildFrom(value);
return result;
}
private SearchKey flagged(ImapRequestLineReader request) throws DecodingException {
final SearchKey result;
nextIsA(request);
nextIsG(request);
nextIsG(request);
nextIsE(request);
nextIsD(request);
result = SearchKey.buildFlagged();
return result;
}
private SearchKey unseen(ImapRequestLineReader request) throws DecodingException {
final SearchKey result;
nextIsE(request);
nextIsE(request);
nextIsN(request);
result = SearchKey.buildUnseen();
return result;
}
private SearchKey undraft(ImapRequestLineReader request) throws DecodingException {
final SearchKey result;
nextIsA(request);
nextIsF(request);
nextIsT(request);
result = SearchKey.buildUndraft();
return result;
}
private SearchKey undeleted(ImapRequestLineReader request) throws DecodingException {
final SearchKey result;
nextIsL(request);
nextIsE(request);
nextIsT(request);
nextIsE(request);
nextIsD(request);
result = SearchKey.buildUndeleted();
return result;
}
private SearchKey unflagged(ImapRequestLineReader request) throws DecodingException {
final SearchKey result;
nextIsL(request);
nextIsA(request);
nextIsG(request);
nextIsG(request);
nextIsE(request);
nextIsD(request);
result = SearchKey.buildUnflagged();
return result;
}
private SearchKey unanswered(ImapRequestLineReader request) throws DecodingException {
final SearchKey result;
nextIsN(request);
nextIsS(request);
nextIsW(request);
nextIsE(request);
nextIsR(request);
nextIsE(request);
nextIsD(request);
result = SearchKey.buildUnanswered();
return result;
}
private SearchKey younger(ImapRequestLineReader request) throws DecodingException {
final SearchKey result;
nextIsO(request);
nextIsU(request);
nextIsN(request);
nextIsG(request);
nextIsE(request);
nextIsR(request);
nextIsSpace(request);
result = SearchKey.buildYounger(request.nzNumber());
return result;
}
private SearchKey older(ImapRequestLineReader request) throws DecodingException {
final SearchKey result;
nextIsR(request);
nextIsSpace(request);
result = SearchKey.buildOlder(request.nzNumber());
return result;
}
private SearchKey or(ImapSession session, ImapRequestLineReader request, Charset charset) throws DecodingException {
final SearchKey result;
nextIsSpace(request);
final SearchKey firstKey = searchKey(session, request, charset, false);
nextIsSpace(request);
final SearchKey secondKey = searchKey(session, request, charset, false);
result = SearchKey.buildOr(firstKey, secondKey);
return result;
}
private SearchKey not(ImapSession session, ImapRequestLineReader request, Charset charset) throws DecodingException {
final SearchKey result;
nextIsT(request);
nextIsSpace(request);
final SearchKey nextKey = searchKey(session, request, charset, false);
result = SearchKey.buildNot(nextKey);
return result;
}
private SearchKey _new(ImapRequestLineReader request) throws DecodingException {
final SearchKey result;
nextIsW(request);
result = SearchKey.buildNew();
return result;
}
private SearchKey recent(ImapRequestLineReader request) throws DecodingException {
final SearchKey result;
//nextIsE(request);
//nextIsC(request);
nextIsE(request);
nextIsN(request);
nextIsT(request);
result = SearchKey.buildRecent();
return result;
}
private SearchKey seen(ImapRequestLineReader request) throws DecodingException {
final SearchKey result;
nextIsN(request);
result = SearchKey.buildSeen();
return result;
}
private SearchKey draft(ImapRequestLineReader request) throws DecodingException {
final SearchKey result;
nextIsA(request);
nextIsF(request);
nextIsT(request);
result = SearchKey.buildDraft();
return result;
}
private SearchKey deleted(ImapRequestLineReader request) throws DecodingException {
final SearchKey result;
nextIsL(request);
nextIsE(request);
nextIsT(request);
nextIsE(request);
nextIsD(request);
result = SearchKey.buildDeleted();
return result;
}
private SearchKey b(ImapRequestLineReader request, Charset charset) throws DecodingException {
final int next = consumeAndCap(request);
switch (next) {
case 'C':
return bcc(request, charset);
case 'E':
return before(request);
case 'O':
return body(request, charset);
default:
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
}
}
private SearchKey body(ImapRequestLineReader request, final Charset charset) throws DecodingException {
final SearchKey result;
nextIsD(request);
nextIsY(request);
nextIsSpace(request);
final String value = request.astring(charset);
result = SearchKey.buildBody(value);
return result;
}
private SearchKey on(ImapRequestLineReader request) throws DecodingException {
final SearchKey result;
nextIsSpace(request);
final DayMonthYear value = request.date();
result = SearchKey.buildOn(value);
return result;
}
private SearchKey sentBefore(ImapRequestLineReader request) throws DecodingException {
final SearchKey result;
nextIsE(request);
nextIsF(request);
nextIsO(request);
nextIsR(request);
nextIsE(request);
nextIsSpace(request);
final DayMonthYear value = request.date();
result = SearchKey.buildSentBefore(value);
return result;
}
private SearchKey sentSince(ImapRequestLineReader request) throws DecodingException {
final SearchKey result;
nextIsI(request);
nextIsN(request);
nextIsC(request);
nextIsE(request);
nextIsSpace(request);
final DayMonthYear value = request.date();
result = SearchKey.buildSentSince(value);
return result;
}
private SearchKey since(ImapRequestLineReader request) throws DecodingException {
final SearchKey result;
nextIsN(request);
nextIsC(request);
nextIsE(request);
nextIsSpace(request);
final DayMonthYear value = request.date();
result = SearchKey.buildSince(value);
return result;
}
private SearchKey sentOn(ImapRequestLineReader request) throws DecodingException {
final SearchKey result;
nextIsN(request);
nextIsSpace(request);
final DayMonthYear value = request.date();
result = SearchKey.buildSentOn(value);
return result;
}
private SearchKey before(ImapRequestLineReader request) throws DecodingException {
final SearchKey result;
nextIsF(request);
nextIsO(request);
nextIsR(request);
nextIsE(request);
nextIsSpace(request);
final DayMonthYear value = request.date();
result = SearchKey.buildBefore(value);
return result;
}
private SearchKey bcc(ImapRequestLineReader request, Charset charset) throws DecodingException {
final SearchKey result;
nextIsC(request);
nextIsSpace(request);
final String value = request.astring(charset);
result = SearchKey.buildBcc(value);
return result;
}
private SearchKey text(ImapRequestLineReader request, final Charset charset) throws DecodingException {
final SearchKey result;
nextIsX(request);
nextIsT(request);
nextIsSpace(request);
final String value = request.astring(charset);
result = SearchKey.buildText(value);
return result;
}
private SearchKey uid(ImapRequestLineReader request) throws DecodingException {
final SearchKey result;
nextIsD(request);
nextIsSpace(request);
final IdRange[] range = request.parseIdRange();
result = SearchKey.buildUidSet(range);
return result;
}
private SearchKey sequenceSet(ImapSession session, ImapRequestLineReader request) throws DecodingException {
final IdRange[] range = request.parseIdRange(session);
final SearchKey result = SearchKey.buildSequenceSet(range);
return result;
}
private SearchKey to(ImapRequestLineReader request, final Charset charset) throws DecodingException {
final SearchKey result;
nextIsSpace(request);
final String value = request.astring(charset);
result = SearchKey.buildTo(value);
return result;
}
private SearchKey subject(ImapRequestLineReader request, final Charset charset) throws DecodingException {
final SearchKey result;
nextIsB(request);
nextIsJ(request);
nextIsE(request);
nextIsC(request);
nextIsT(request);
nextIsSpace(request);
final String value = request.astring(charset);
result = SearchKey.buildSubject(value);
return result;
}
private SearchKey a(ImapRequestLineReader request) throws DecodingException {
final int next = consumeAndCap(request);
switch (next) {
case 'L':
return all(request);
case 'N':
return answered(request);
default:
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
}
}
private SearchKey answered(ImapRequestLineReader request) throws DecodingException {
final SearchKey result;
nextIsS(request);
nextIsW(request);
nextIsE(request);
nextIsR(request);
nextIsE(request);
nextIsD(request);
result = SearchKey.buildAnswered();
return result;
}
private SearchKey all(ImapRequestLineReader request) throws DecodingException {
final SearchKey result;
nextIsL(request);
result = SearchKey.buildAll();
return result;
}
private void nextIsSpace(ImapRequestLineReader request) throws DecodingException {
final char next = request.consume();
if (next != ' ') {
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
}
}
private void nextIsG(ImapRequestLineReader request) throws DecodingException {
nextIs(request, 'G', 'g');
}
private void nextIsM(ImapRequestLineReader request) throws DecodingException {
nextIs(request, 'M', 'm');
}
private void nextIsI(ImapRequestLineReader request) throws DecodingException {
nextIs(request, 'I', 'i');
}
private void nextIsN(ImapRequestLineReader request) throws DecodingException {
nextIs(request, 'N', 'n');
}
private void nextIsA(ImapRequestLineReader request) throws DecodingException {
nextIs(request, 'A', 'a');
}
private void nextIsT(ImapRequestLineReader request) throws DecodingException {
nextIs(request, 'T', 't');
}
private void nextIsY(ImapRequestLineReader request) throws DecodingException {
nextIs(request, 'Y', 'y');
}
private void nextIsX(ImapRequestLineReader request) throws DecodingException {
nextIs(request, 'X', 'x');
}
private void nextIsU(ImapRequestLineReader request) throws DecodingException {
nextIs(request, 'U', 'u');
}
private void nextIsO(ImapRequestLineReader request) throws DecodingException {
nextIs(request, 'O', 'o');
}
private void nextIsF(ImapRequestLineReader request) throws DecodingException {
nextIs(request, 'F', 'f');
}
private void nextIsJ(ImapRequestLineReader request) throws DecodingException {
nextIs(request, 'J', 'j');
}
private void nextIsC(ImapRequestLineReader request) throws DecodingException {
nextIs(request, 'C', 'c');
}
private void nextIsD(ImapRequestLineReader request) throws DecodingException {
nextIs(request, 'D', 'd');
}
private void nextIsB(ImapRequestLineReader request) throws DecodingException {
nextIs(request, 'B', 'b');
}
private void nextIsR(ImapRequestLineReader request) throws DecodingException {
nextIs(request, 'R', 'r');
}
private void nextIsE(ImapRequestLineReader request) throws DecodingException {
nextIs(request, 'E', 'e');
}
private void nextIsW(ImapRequestLineReader request) throws DecodingException {
nextIs(request, 'W', 'w');
}
private void nextIsS(ImapRequestLineReader request) throws DecodingException {
nextIs(request, 'S', 's');
}
private void nextIsL(ImapRequestLineReader request) throws DecodingException {
nextIs(request, 'L', 'l');
}
private void nextIsV(ImapRequestLineReader request) throws DecodingException {
nextIs(request, 'V', 'v');
}
private void nextIs(ImapRequestLineReader request, final char upper, final char lower) throws DecodingException {
final char next = request.consume();
if (next != upper && next != lower) {
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
}
}
public SearchKey decode(ImapSession session, ImapRequestLineReader request) throws DecodingException, IllegalCharsetNameException, UnsupportedCharsetException {
request.nextWordChar();
final SearchKey firstKey = searchKey(session, request, null, true);
final SearchKey result;
if (request.nextChar() == ' ') {
List<SearchKey> keys = new ArrayList<SearchKey>();
keys.add(firstKey);
while (request.nextChar() == ' ') {
request.nextWordChar();
final SearchKey key = searchKey(session, request, null, false);
keys.add(key);
}
result = SearchKey.buildAnd(keys);
} else {
result = firstKey;
}
request.eol();
return result;
}
private ImapMessage unsupportedCharset(final String tag, final ImapCommand command) {
final StatusResponseFactory factory = getStatusResponseFactory();
final ResponseCode badCharset = StatusResponse.ResponseCode.badCharset(CharsetUtil.getAvailableCharsetNames());
final StatusResponse result = factory.taggedNo(tag, command, HumanReadableText.BAD_CHARSET, badCharset);
return result;
}
/**
* Parse the {@link SearchResultOption}'s which are used for ESEARCH
*/
private List<SearchResultOption> parseOptions(ImapRequestLineReader reader) throws DecodingException {
List<SearchResultOption> options = new ArrayList<SearchResultOption>();
reader.consumeChar('(');
reader.nextWordChar();
int cap = consumeAndCap(reader);
while (cap != ')') {
switch (cap) {
case 'A':
nextIsL(reader);
nextIsL(reader);
options.add(SearchResultOption.ALL);
break;
case 'C':
nextIsO(reader);
nextIsU(reader);
nextIsN(reader);
nextIsT(reader);
options.add(SearchResultOption.COUNT);
break;
case 'M':
final int c = consumeAndCap(reader);
switch (c) {
case 'A':
nextIsX(reader);
options.add(SearchResultOption.MAX);
break;
case 'I':
nextIsN(reader);
options.add(SearchResultOption.MIN);
break;
default:
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
}
break;
// Check for SAVE options which is part of the SEARCHRES extension
case 'S':
nextIsA(reader);
nextIsV(reader);
nextIsE(reader);
options.add(SearchResultOption.SAVE);
break;
default:
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
}
reader.nextWordChar();
cap = consumeAndCap(reader);
}
// if the options are empty then we parsed RETURN () which is a shortcut for ALL.
// See http://www.faqs.org/rfcs/rfc4731.html 3.1
if (options.isEmpty()) {
options.add(SearchResultOption.ALL);
}
return options;
}
/*
* (non-Javadoc)
*
* @see
* org.apache.james.imap.decode.parser.AbstractUidCommandParser#decode(org
* .apache.james.imap.api.ImapCommand,
* org.apache.james.imap.decode.ImapRequestLineReader, java.lang.String,
* boolean, org.apache.james.imap.api.process.ImapSession)
*/
protected ImapMessage decode(ImapCommand command, ImapRequestLineReader request, String tag, boolean useUids, ImapSession session) throws DecodingException {
try {
SearchKey recent = null;
List<SearchResultOption> options = null;
int c = cap(request.nextWordChar());
if (c == 'R') {
// if we found a R its either RECENT or RETURN so consume it
request.consume();
nextIsE(request);
c = consumeAndCap(request);
switch (c) {
case 'C':
recent = recent(request);
break;
case 'T':
nextIsU(request);
nextIsR(request);
nextIsN(request);
request.nextWordChar();
options = parseOptions(request);
break;
default:
throw new DecodingException(HumanReadableText.ILLEGAL_ARGUMENTS, "Unknown search key");
}
}
final SearchKey finalKey;
if (recent != null) {
if (request.nextChar() != ' ') {
request.eol();
finalKey = recent;
} else {
// Parse the search term from the request
final SearchKey key = decode(session, request);
finalKey = SearchKey.buildAnd(Arrays.asList(recent, key));
}
} else {
// Parse the search term from the request
finalKey = decode(session, request);
}
if (options == null) {
options = new ArrayList<SearchResultOption>();
}
final ImapMessage result = new SearchRequest(command, new SearchOperation(finalKey, options), useUids, tag);
return result;
} catch (IllegalCharsetNameException e) {
session.getLog().debug("Unable to decode request", e);
return unsupportedCharset(tag, command);
} catch (UnsupportedCharsetException e) {
session.getLog().debug("Unable to decode request", e);
return unsupportedCharset(tag, command);
}
}
}