mirror of https://github.com/octoleo/plantuml.git
81 lines
2.2 KiB
Java
81 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.utils;
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public class CharInspectorImpl implements CharInspector {
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final private BlocLines data;
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final private boolean insertNewlines;
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private int line = 0;
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private int pos = 0;
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CharInspectorImpl(BlocLines input, boolean insertNewlines) {
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this.data = input;
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this.insertNewlines = insertNewlines;
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}
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@Override
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public char peek(int ahead) {
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if (line == -1)
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return 0;
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final String currentLine = getCurrentLine();
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if (pos + ahead >= currentLine.length())
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return '\0';
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return currentLine.charAt(pos + ahead);
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}
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private String getCurrentLine() {
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if (insertNewlines)
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return data.getAt(line).getTrimmed().getString() + "\n";
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return data.getAt(line).getTrimmed().getString();
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}
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@Override
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public void jump() {
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if (line == -1)
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throw new IllegalStateException();
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pos++;
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if (pos >= getCurrentLine().length()) {
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line++;
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pos = 0;
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}
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while (line < data.size() && getCurrentLine().length() == 0)
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line++;
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if (line >= data.size())
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line = -1;
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}
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}
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