/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE
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* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
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* add the following below this CDDL HEADER, with the fields enclosed
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* by brackets "[]" replaced with your own identifying information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Copyright 2009 Sun Microsystems, Inc.
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*/
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package org.opends.sdk.schema;
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import static com.sun.opends.sdk.util.StringPrepProfile.CASE_FOLD;
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import static com.sun.opends.sdk.util.StringPrepProfile.prepareUnicode;
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import org.opends.sdk.ByteSequence;
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import org.opends.sdk.ByteString;
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import org.opends.sdk.DecodeException;
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import com.sun.opends.sdk.util.StringPrepProfile;
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/**
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* This class implements the caseIgnoreListSubstringsMatch matching rule defined
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* in X.520 and referenced in RFC 2252.
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*/
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final class CaseIgnoreListSubstringMatchingRuleImpl extends
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AbstractSubstringMatchingRuleImpl
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{
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public ByteString normalizeAttributeValue(final Schema schema,
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final ByteSequence value)
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{
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final StringBuilder buffer = new StringBuilder();
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prepareUnicode(buffer, value, StringPrepProfile.TRIM, CASE_FOLD);
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final int bufferLength = buffer.length();
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if (bufferLength == 0)
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{
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if (value.length() > 0)
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{
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// This should only happen if the value is composed entirely of
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// spaces. In that case, the normalized value is a single space.
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return SchemaConstants.SINGLE_SPACE_VALUE;
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}
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else
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{
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// The value is empty, so it is already normalized.
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return ByteString.empty();
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}
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}
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// Replace any consecutive spaces with a single space. Any spaces
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// around a dollar sign will also be removed.
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for (int pos = bufferLength - 1; pos > 0; pos--)
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{
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if (buffer.charAt(pos) == ' ')
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{
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final char c = buffer.charAt(pos - 1);
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if (c == ' ')
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{
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buffer.delete(pos, pos + 1);
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}
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else if (c == '$')
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{
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if (pos <= 1 || buffer.charAt(pos - 2) != '\\')
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{
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buffer.delete(pos, pos + 1);
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}
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}
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else if (buffer.charAt(pos + 1) == '$')
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{
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buffer.delete(pos, pos + 1);
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}
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}
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}
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return ByteString.valueOf(buffer.toString());
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}
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@Override
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ByteString normalizeSubString(final Schema schema, final ByteSequence value)
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throws DecodeException
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{
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// In this case, the process for normalizing a substring is the same
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// as normalizing a full value with the exception that it may
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// include an opening or trailing space.
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final StringBuilder buffer = new StringBuilder();
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prepareUnicode(buffer, value, false, CASE_FOLD);
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final int bufferLength = buffer.length();
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if (bufferLength == 0)
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{
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if (value.length() > 0)
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{
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// This should only happen if the value is composed entirely of
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// spaces. In that case, the normalized value is a single space.
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return SchemaConstants.SINGLE_SPACE_VALUE;
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}
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else
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{
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// The value is empty, so it is already normalized.
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return value.toByteString();
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}
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}
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// Replace any consecutive spaces with a single space.
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for (int pos = bufferLength - 1; pos > 0; pos--)
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{
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if (buffer.charAt(pos) == ' ')
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{
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if (buffer.charAt(pos - 1) == ' ')
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{
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buffer.delete(pos, pos + 1);
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}
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}
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}
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return ByteString.valueOf(buffer.toString());
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}
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}
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