/*
* Copyright 2015 by Edi Weissmann (edi.weissmann@gmail.com)
*
* This file is part of the Sejda source code
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program 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 Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.sejda.core.support.prefix.processor;
import org.apache.commons.lang3.StringUtils;
public final class PrefixUtils {
private PrefixUtils() {
// hide
}
/**
* Strips characters deemed usafe for a filename
*/
public static String toSafeFilename(String input) {
return StringUtils.defaultIfBlank(input, "").replaceAll("[`\0\f\t\n\r\\\\/:*?\\\"<>|]", "");
}
/**
* Strips all but characters that are known to be safe: alphanumerics for now.
*/
public static String toStrictFilename(String input) {
String safe = StringUtils.defaultIfBlank(input, "").replaceAll("[^A-Za-z0-9_ .-]", "");
if (safe.length() > 255) {
safe = safe.substring(0, 255);
}
return safe;
}
}