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Awake FILE is a secure Open Source framework that allows to program very easily file uploads/downloads and RPC through http. File transfers include
powerful features like file chunking and automatic recovery mechanism.
Security has been taken into account from the design: server side allows
to specify strong security rules in order to protect the files and to secure the RPC calls.
/*
* This file is part of Awake FILE.
* Awake FILE: Easy file upload & download over HTTP with Java.
* Copyright (C) 2014, KawanSoft SAS
* (http://www.kawansoft.com). All rights reserved.
*
* Awake FILE 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 2.1 of the License, or (at your option) any later version.
*
* Awake FILE 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
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA
*
* Any modifications to this file must keep this entire header
* intact.
*/
package org.awakefw.file.util;
import org.awakefw.file.api.util.Base64;
/**
* Misc utilites Strings
*
* @author Nicolas de Pomereu
*
*/
public class StringUtil {
/** The debug flag */
public boolean DEBUG = false;
/** Universal and clean line separator */
public static String CR_LF = System.getProperty("line.separator");
/**
* Convert a String to a Base64 String
*
* @param s
* the String to convert
* @return The converted String converted in Base64
*/
public static String toBase64(String s) {
if (s == null) {
throw new IllegalArgumentException("input string can not be null!");
}
return Base64.byteArrayToBase64(s.getBytes());
}
/**
* return a "" empty string if null or a trimed stgring if not null
*
* @param action
* the input string
* @return the empty stgring or trimed string
*/
public static String getTrimValue(String string) {
if (string == null) {
return "";
} else {
return string.trim();
}
}
/**
* Convert a String to a Base64 String
*
* @param s
* the String to convert
* @return The converted String converted in Base64
*/
public static String fromBase64(String s) {
if (s == null) {
throw new IllegalArgumentException("input string can not be null!");
}
return new String(Base64.base64ToByteArray(s));
}
/**
* Cut the String to 64 chars max
*
* @param in
* the string to cut
* @param maxLength
* the string max length
* @return the cut string at maxLength chars
*/
public static String cut(String in, int maxLength) {
if (in == null) {
return null;
}
if (in.length() <= maxLength) {
return in;
}
// Ok, cut it to maxLength chars!
return in.substring(0, maxLength);
}
/*
* Cut the String to 64 chars max
*
* @param in the string to cut
*
* @return the cut string at 64chars
*/
public static String cut64(String in) {
if (in == null) {
return null;
}
if (in.length() <= 64) {
return in;
}
// Ok, cut it to 64 chars!
return in.substring(0, 64);
}
/**
* Return true if the filename is a Window possible Filename
*
* @param filename
* the filename to test
* @return true if the filename is a Window Filename
*/
public static boolean isPossibleWindowFilename(String filename) {
if (filename == null) {
throw new IllegalArgumentException(
"input filename can not be null!");
}
if (filename.indexOf("\\") != -1 || filename.indexOf("/") != -1
|| filename.indexOf(":") != -1 || filename.indexOf("*") != -1
|| filename.indexOf("?") != -1 || filename.indexOf("\"") != -1
|| filename.indexOf("\"") != -1 || filename.indexOf("<") != -1
|| filename.indexOf(">") != -1 || filename.indexOf("|") != -1) {
return false;
} else {
return true;
}
}
/**
* debug tool
*/
@SuppressWarnings("unused")
private static void debug(String s) {
if (new StringUtil().DEBUG) {
AwakeClientLogger.log(s);
}
}
}
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