org.jose4j.lang.StringUtil Maven / Gradle / Ivy
/*
* Copyright 2012-2017 Brian Campbell
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jose4j.lang;
import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;
/**
*/
public class StringUtil
{
// not using StandardCharsets due to lack of support in Android until API 19
public static final String UTF_8 = "UTF-8";
public static final String US_ASCII = "US-ASCII";
public static String newStringUtf8(byte[] bytes)
{
return newString(bytes, UTF_8);
}
public static String newStringUsAscii(byte[] bytes)
{
return newString(bytes, US_ASCII);
}
public static String newString(byte[] bytes, String charsetName)
{
try
{
return (bytes == null) ? null : new String(bytes, charsetName);
}
catch (UnsupportedEncodingException e)
{
throw newISE(charsetName);
}
}
public static String newString(byte[] bytes, Charset charset)
{
return (bytes == null) ? null : new String(bytes, charset);
}
public static byte[] getBytesUtf8(String string)
{
return getBytesUnchecked(string, UTF_8);
}
public static byte[] getBytesAscii(String string)
{
return getBytesUnchecked(string, US_ASCII);
}
public static byte[] getBytes(String string, Charset charset)
{
return (string == null) ? null : string.getBytes(charset);
}
public static byte[] getBytesUnchecked(String string, String charsetName)
{
try
{
return (string == null) ? null : string.getBytes(charsetName);
}
catch (UnsupportedEncodingException e)
{
throw newISE(charsetName);
}
}
private static IllegalStateException newISE(String charsetName)
{
return new IllegalStateException("Unknown or unsupported character set name: " + charsetName);
}
}