| /* |
| * 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. |
| */ |
| |
| /* $Id$ */ |
| |
| package org.apache.fop.complexscripts.bidi; |
| |
| |
| /** |
| * <p>Constants used for bidirectional processing.</p> |
| * |
| * <p>This work was originally authored by Glenn Adams (gadams@apache.org).</p> |
| */ |
| public interface BidiConstants { |
| |
| // bidi character class |
| |
| /** first external (official) category */ |
| int FIRST = 1; |
| |
| // strong category |
| /** left-to-right class */ |
| int L = 1; |
| /** left-to-right embedding class */ |
| int LRE = 2; |
| /** left-to-right override class */ |
| int LRO = 3; |
| /** right-to-left class */ |
| int R = 4; |
| /** right-to-left arabic class */ |
| int AL = 5; |
| /** right-to-left embedding class */ |
| int RLE = 6; |
| /** right-to-left override class */ |
| int RLO = 7; |
| |
| // weak category |
| /** pop directional formatting class */ |
| int PDF = 8; |
| /** european number class */ |
| int EN = 9; |
| /** european number separator class */ |
| int ES = 10; |
| /** european number terminator class */ |
| int ET = 11; |
| /** arabic number class */ |
| int AN = 12; |
| /** common number separator class */ |
| int CS = 13; |
| /** non-spacing mark class */ |
| int NSM = 14; |
| /** boundary neutral class */ |
| int BN = 15; |
| |
| // neutral category |
| /** paragraph separator class */ |
| int B = 16; |
| /** segment separator class */ |
| int S = 17; |
| /** whitespace class */ |
| int WS = 18; |
| /** other neutrals class */ |
| int ON = 19; |
| |
| /** last external (official) category */ |
| int LAST = 19; |
| |
| // implementation specific categories |
| /** placeholder for low surrogate */ |
| int SURROGATE = 20; |
| |
| // other constants |
| /** last |
| /** maximum bidirectional levels */ |
| int MAX_LEVELS = 61; |
| /** override flag */ |
| int OVERRIDE = 128; |
| } |