mirror of https://github.com/octoleo/plantuml.git
78 lines
2.2 KiB
Java
78 lines
2.2 KiB
Java
/* ========================================================================
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* PlantUML : a free UML diagram generator
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* ========================================================================
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*
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* (C) Copyright 2009-2020, Arnaud Roques
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*
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* Project Info: http://plantuml.com
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*
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* If you like this project or if you find it useful, you can support us at:
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*
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* http://plantuml.com/patreon (only 1$ per month!)
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* http://plantuml.com/paypal
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*
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* This file is part of PlantUML.
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*
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* PlantUML is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* PlantUML distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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* License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*
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*
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* Original Author: Arnaud Roques
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*
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*
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*/
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package net.sourceforge.plantuml.preproc2;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.List;
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import net.sourceforge.plantuml.StringLocated;
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import net.sourceforge.plantuml.preproc.ReadLine;
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public abstract class ReadLineInsertable implements ReadLine {
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private final List<ReadLine> sources = new ArrayList<ReadLine>();
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final protected void insert(ReadLine inserted) throws IOException {
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sources.add(0, inserted);
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}
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abstract StringLocated readLineInternal() throws IOException;
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final public StringLocated readLine() throws IOException {
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while (sources.size() > 0) {
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final ReadLine tmp = sources.get(0);
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final StringLocated result = tmp.readLine();
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if (result != null) {
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return result;
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}
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tmp.close();
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sources.remove(0);
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}
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return readLineInternal();
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}
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abstract void closeInternal() throws IOException;
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final public void close() throws IOException {
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for (ReadLine s : sources) {
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s.close();
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}
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closeInternal();
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}
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}
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