/*
* Copyright 2006-2016 The MZmine 3 Development Team
*
* This file is part of MZmine 3.
*
* MZmine 3 is free software; you can redistribute it and/or modify it under the terms of the GNU
* General Public License as published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* MZmine 3 is 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with MZmine 3; if not,
* write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
* USA
*/
package io.github.mzmine.util;
import java.io.File;
import java.util.List;
import javax.annotation.Nonnull;
import com.google.common.io.Files;
/**
* File name utilities
*/
public class FileNameUtil {
public static @Nonnull String findCommonPrefix(@Nonnull List<File> fileNames) {
if (fileNames.size() < 2)
return "";
String firstName = fileNames.get(0).getName();
for (int prefixLen = 0; prefixLen < firstName.length(); prefixLen++) {
char c = firstName.charAt(prefixLen);
for (int i = 1; i < fileNames.size(); i++) {
String ithName = fileNames.get(i).getName();
if (prefixLen >= ithName.length() || ithName.charAt(prefixLen) != c) {
// Mismatch found
return ithName.substring(0, prefixLen);
}
}
}
return firstName;
}
public static @Nonnull String findCommonSuffix(@Nonnull List<File> fileNames) {
if (fileNames.isEmpty())
return "";
if (fileNames.size() == 1) {
// Return file extension
String ext = Files.getFileExtension(fileNames.get(0).getAbsolutePath());
return "." + ext;
}
String firstName = fileNames.get(0).getName();
for (int suffixLen = 0; suffixLen < firstName.length(); suffixLen++) {
char c = firstName.charAt(firstName.length() - 1 - suffixLen);
for (int i = 1; i < fileNames.size(); i++) {
String ithName = fileNames.get(i).getName();
if (suffixLen >= ithName.length()
|| ithName.charAt(ithName.length() - 1 - suffixLen) != c) {
// Mismatch found
return ithName.substring(ithName.length() - suffixLen);
}
}
}
return firstName;
}
}