/*
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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.messages.Messages.*;
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import static com.sun.opends.sdk.util.StringPrepProfile.*;
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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.Message;
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/**
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* This class implements the caseIgnoreIA5SubstringsMatch matching rule
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* defined in RFC 2252.
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*/
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final class CaseIgnoreIA5SubstringMatchingRuleImpl extends
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AbstractSubstringMatchingRuleImpl
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{
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public ByteString normalizeAttributeValue(Schema schema,
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ByteSequence value) throws DecodeException
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{
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return normalize(TRIM, value);
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}
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@Override
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ByteString normalizeSubString(Schema schema, ByteSequence value)
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throws DecodeException
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{
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return normalize(false, value);
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}
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private ByteString normalize(boolean trim, ByteSequence value)
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throws DecodeException
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{
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final StringBuilder buffer = new StringBuilder();
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prepareUnicode(buffer, value, 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 and watch out
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// for non-ASCII characters.
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for (int pos = bufferLength - 1; pos > 0; pos--)
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{
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final char c = buffer.charAt(pos);
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if (c == ' ')
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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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else if ((c & 0x7F) != c)
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{
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// This is not a valid character for an IA5 string. If strict
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// syntax enforcement is enabled, then we'll throw an exception.
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// Otherwise, we'll get rid of the character.
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final Message message =
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WARN_ATTR_SYNTAX_IA5_ILLEGAL_CHARACTER.get(
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value.toString(), String.valueOf(c));
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throw DecodeException.error(message);
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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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