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PlantUML is a component that allows to quickly write diagrams from text.
There is a newer version: 1.2024.8
// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
/* +=======================================================================
 * |
 * |      PlantUML : a free UML diagram generator
 * |
 * +=======================================================================
 *
 * (C) Copyright 2009-2024, Arnaud Roques
 *
 * Project Info:  https://plantuml.com
 *
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 * PlantUML is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * PlantUML distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library.  If not, see .
 *
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 * messages are usually generated on welcome or error images and never on
 * functional diagrams.
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 * Images (whatever their format : PNG, SVG, EPS...) generated by running PlantUML
 * are owned by the author of their corresponding sources code (that is, their
 * textual description in PlantUML language). Those images are not covered by
 * this LGPL license.
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 * The generated images can then be used without any reference to the LGPL license.
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 * although this will be appreciated by the PlantUML team.
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 * (see https://plantuml.com/graphviz-dot )
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 * Icons provided by OpenIconic :  https://useiconic.com/open
 * Archimate sprites provided by Archi :  http://www.archimatetool.com
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 * Brotli (c) by the Brotli Authors https://github.com/google/brotli
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 *
 */
package net.sourceforge.plantuml.file;

import java.io.IOException;

import net.sourceforge.plantuml.security.SFile;

public class AParentFolderZip implements AParentFolder {

	private final SFile zipFile;
	private final String parent;

	@Override
	public String toString() {
		return "AParentFolderZip::" + zipFile + " " + parent;
	}

	public AParentFolderZip(SFile zipFile, String entry) {
		this.zipFile = zipFile;
		final int idx = entry.lastIndexOf('/');
		if (idx == -1) {
			parent = "";
		} else {
			parent = entry.substring(0, idx + 1);
		}
	}

	public AFile getAFile(String nameOrPath) throws IOException {
		return new AFileZipEntry(zipFile, merge(parent + nameOrPath));
	}

	String merge(String full) {
		// full = full.replaceFirst("\\.", "Z");
		while (true) {
			int len = full.length();
			full = full.replaceFirst("[^/]+/\\.\\./", "");
			if (full.length() == len) {
				return full;
			}
		}
	}

}