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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.
- */
-
- /* $Id$ */
-
- package org.apache.fop.fonts;
-
- import java.text.CharacterIterator;
-
- /**
- * Encapsulates a sub-sequence (fragement) of a text iterator (or other text source),
- * where begin index and end index are indices into larger text iterator that denote
- * [begin,end) of sub-sequence range. Additionally associated with a designated script
- * (or "auto"), a designated language (or "none"), and a (single) bidi level (or -1
- * if not known).
- */
- public interface TextFragment {
-
- /**
- * Obtain reference to underlying iterator.
- */
- CharacterIterator getIterator();
-
- /**
- * Obtain beginning index (inclusive) of sub-sequence of fragment in overall text source.
- */
- int getBeginIndex();
-
- /**
- * Obtain ending index (exclusive) of sub-sequence of fragment in overall text source.
- */
- int getEndIndex();
-
- /**
- * Obtain associated script (if designated) or "auto" if not.
- */
- String getScript();
-
- /**
- * Obtain associated language (if designated) or "none" if not.
- */
- String getLanguage();
-
- /**
- * Obtain associated bidi level (if known) or -1 if not.
- */
- int getBidiLevel();
-
- /**
- * Obtain character at specified index within this fragment's sub-sequence,
- * where index 0 corresponds to beginning index in overal text source, and
- * subSequenceIndex must be less than ending index - beginning index.
- */
- char charAt(int subSequenceIndex);
-
- CharSequence subSequence(int startIndex, int endIndex);
- }
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