/*
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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 org.opends.sdk.schema.SchemaConstants.EMR_CASE_IGNORE_OID;
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import static org.opends.sdk.schema.SchemaConstants.OMR_CASE_IGNORE_OID;
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import static org.opends.sdk.schema.SchemaConstants.SMR_CASE_IGNORE_OID;
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import static org.opends.sdk.schema.SchemaConstants.SYNTAX_TELETEX_TERM_ID_NAME;
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import java.util.HashSet;
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import org.opends.sdk.ByteSequence;
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import org.opends.sdk.LocalizableMessageBuilder;
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/**
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* This class implements the teletex terminal identifier attribute syntax, which
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* contains a printable string (the terminal identifier) followed by zero or
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* more parameters, which start with a dollar sign and are followed by a
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* parameter name, a colon, and a value. The parameter value should consist of
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* any string of bytes (the dollar sign and backslash must be escaped with a
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* preceding backslash), and the parameter name must be one of the following
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* strings:
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* <UL>
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* <LI>graphic</LI>
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* <LI>control</LI>
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* <LI>misc</LI>
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* <LI>page</LI>
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* <LI>private</LI>
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* </UL>
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*/
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final class TeletexTerminalIdentifierSyntaxImpl extends AbstractSyntaxImpl
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{
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/**
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* The set of allowed fax parameter values, formatted entirely in lowercase
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* characters.
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*/
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private static final HashSet<String> ALLOWED_TTX_PARAMETERS = new HashSet<String>(
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5);
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static
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{
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ALLOWED_TTX_PARAMETERS.add("graphic");
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ALLOWED_TTX_PARAMETERS.add("control");
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ALLOWED_TTX_PARAMETERS.add("misc");
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ALLOWED_TTX_PARAMETERS.add("page");
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ALLOWED_TTX_PARAMETERS.add("private");
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}
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@Override
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public String getEqualityMatchingRule()
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{
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return EMR_CASE_IGNORE_OID;
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}
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public String getName()
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{
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return SYNTAX_TELETEX_TERM_ID_NAME;
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}
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@Override
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public String getOrderingMatchingRule()
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{
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return OMR_CASE_IGNORE_OID;
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}
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@Override
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public String getSubstringMatchingRule()
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{
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return SMR_CASE_IGNORE_OID;
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}
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public boolean isHumanReadable()
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{
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return false;
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}
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/**
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* Indicates whether the provided value is acceptable for use in an attribute
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* with this syntax. If it is not, then the reason may be appended to the
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* provided buffer.
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*
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* @param schema
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* The schema in which this syntax is defined.
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* @param value
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* The value for which to make the determination.
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* @param invalidReason
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* The buffer to which the invalid reason should be appended.
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* @return <CODE>true</CODE> if the provided value is acceptable for use with
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* this syntax, or <CODE>false</CODE> if not.
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*/
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public boolean valueIsAcceptable(final Schema schema,
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final ByteSequence value, final LocalizableMessageBuilder invalidReason)
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{
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// Get a lowercase string representation of the value and find its
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// length.
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final String valueString = value.toString();
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final int valueLength = valueString.length();
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// The value must contain at least one character.
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if (valueLength == 0)
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{
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invalidReason.append(ERR_ATTR_SYNTAX_TELETEXID_EMPTY.get());
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return false;
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}
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// The first character must be a printable string character.
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char c = valueString.charAt(0);
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if (!PrintableStringSyntaxImpl.isPrintableCharacter(c))
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{
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invalidReason.append(ERR_ATTR_SYNTAX_TELETEXID_NOT_PRINTABLE.get(
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valueString, String.valueOf(c), 0));
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return false;
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}
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// Continue reading until we find a dollar sign or the end of the
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// string. Every intermediate character must be a printable string
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// character.
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int pos = 1;
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for (; pos < valueLength; pos++)
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{
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c = valueString.charAt(pos);
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if (c == '$')
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{
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pos++;
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break;
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}
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else
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{
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if (!PrintableStringSyntaxImpl.isPrintableCharacter(c))
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{
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invalidReason.append(ERR_ATTR_SYNTAX_TELETEXID_NOT_PRINTABLE.get(
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valueString, String.valueOf(c), pos));
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}
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}
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}
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if (pos >= valueLength)
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{
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// We're at the end of the value, so it must be valid unless the
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// last character was a dollar sign.
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if (c == '$')
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{
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invalidReason.append(ERR_ATTR_SYNTAX_TELETEXID_END_WITH_DOLLAR
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.get(valueString));
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return false;
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}
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else
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{
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return true;
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}
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}
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// Continue reading until we find the end of the string. Each
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// substring must be a valid teletex terminal identifier parameter
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// followed by a colon and the value. Dollar signs must be escaped
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int paramStartPos = pos;
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boolean escaped = false;
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while (pos < valueLength)
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{
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if (escaped)
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{
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pos++;
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continue;
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}
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c = valueString.charAt(pos++);
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if (c == '\\')
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{
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escaped = true;
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continue;
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}
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else if (c == '$')
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{
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final String paramStr = valueString.substring(paramStartPos, pos);
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final int colonPos = paramStr.indexOf(':');
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if (colonPos < 0)
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{
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invalidReason.append(ERR_ATTR_SYNTAX_TELETEXID_PARAM_NO_COLON
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.get(valueString));
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return false;
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}
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final String paramName = paramStr.substring(0, colonPos);
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if (!ALLOWED_TTX_PARAMETERS.contains(paramName))
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{
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invalidReason.append(ERR_ATTR_SYNTAX_TELETEXID_ILLEGAL_PARAMETER.get(
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valueString, paramName));
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return false;
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}
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paramStartPos = pos;
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}
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}
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// We must be at the end of the value. Read the last parameter and
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// make sure it is valid.
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final String paramStr = valueString.substring(paramStartPos);
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final int colonPos = paramStr.indexOf(':');
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if (colonPos < 0)
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{
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invalidReason.append(ERR_ATTR_SYNTAX_TELETEXID_PARAM_NO_COLON
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.get(valueString));
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return false;
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}
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final String paramName = paramStr.substring(0, colonPos);
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if (!ALLOWED_TTX_PARAMETERS.contains(paramName))
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{
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invalidReason.append(ERR_ATTR_SYNTAX_TELETEXID_ILLEGAL_PARAMETER.get(
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valueString, paramName));
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return false;
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}
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// If we've gotten here, then the value must be valid.
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return true;
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}
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}
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