/*
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fm - File management class library
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Copyright (C) 2024 Ulrich Hilger
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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package de.uhilger.fm;
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import java.io.File;
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import java.io.IOException;
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import java.nio.file.DirectoryStream;
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import java.nio.file.Files;
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import java.nio.file.Path;
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/**
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* Umbenennen von Dateien
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*
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* @author Ulrich Hilger, 15. Januar 2024
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*/
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public class Renamer {
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public static final String STR_DOT = ".";
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/**
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* Eine Datei oder einen Ordner umbenennen
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*
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* @param neuerName der Name fuer das Objekt
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* @param file das Objekt, das umbenannt werden soll
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* @return der neue Name
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* @throws IOException wenn etwas schief geht
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*/
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public String rename(/*HttpExchange exchange, *//*String relPfad,*/ String neuerName, File file)
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throws IOException {
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File neueDatei;
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String fname = file.getName().toLowerCase();
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if(fname.endsWith(ImageFileFilter.JPEG) || fname.endsWith(ImageFileFilter.JPG) ||
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fname.endsWith(ImageFileFilter.PNG)) {
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neueDatei = renameImgFiles(file, neuerName);
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} else {
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neueDatei = new File(file.getParentFile(), neuerName);
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file.renameTo(neueDatei);
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}
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return neueDatei.getName();
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}
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/**
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* Alle Varianten einer Bilddatei umbenennen
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*
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* TODO einen sinnvolleren Rueckgabewert bauen
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*
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* @param file die Origianlbilddatei
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* @param newName der neue Name
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* @return Name der letzten Datei, die umbenannt wurde
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* @throws IOException wenn etwas schief geht
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*/
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public File renameImgFiles(/*File targetDir, */ File file, String newName) throws IOException {
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String alt;
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String neu;
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File neueDatei = file;
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File targetDir = file.getParentFile();
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int newdotpos = newName.lastIndexOf(STR_DOT);
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String newfname = newName.substring(0, newdotpos);
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String newext = newName.substring(newdotpos);
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//logger.fine("newfname: " + newfname + ", newext: " + newext);
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String fnameext = file.getName();
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int dotpos = fnameext.lastIndexOf(STR_DOT);
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String fname = fnameext.substring(0, dotpos);
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String ext = fnameext.substring(dotpos);
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//logger.fine("fname: " + fname + ", ext: " + ext);
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DirectoryStream<Path> stream = Files.newDirectoryStream(targetDir.toPath(), fname + "*" + ext);
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for (Path path : stream) {
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//logger.fine(path.getFileName().toString());
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alt = path.getFileName().toString();
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//logger.fine("alt: " + alt);
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if(alt.contains(ImageFileFilter.TN)) {
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neu = newfname + ImageFileFilter.TN + newext;
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} else if (alt.contains(ImageFileFilter.KL)) {
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neu = newfname + ImageFileFilter.KL + newext;
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} else if(alt.contains(ImageFileFilter.GR)) {
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neu = newfname + ImageFileFilter.GR + newext;
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} else if(alt.contains(ImageFileFilter.MT)) {
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neu = newfname + ImageFileFilter.MT + newext;
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} else if(alt.contains(ImageFileFilter.SM)) {
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neu = newfname + ImageFileFilter.SM + newext;
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} else {
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neu = newName;
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}
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neueDatei = new File(targetDir, neu);
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path.toFile().renameTo(neueDatei);
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}
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stream.close();
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return neueDatei;
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}
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}
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