org.sonarsource.sonarlint.core.util.StringUtils Maven / Gradle / Ivy
/*
* SonarLint Core - Implementation
* Copyright (C) 2016-2021 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program 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 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonarsource.sonarlint.core.util;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import javax.annotation.Nullable;
public class StringUtils {
private StringUtils() {
}
public static String urlEncode(String toEncode) {
try {
return URLEncoder.encode(toEncode, StandardCharsets.UTF_8.name());
} catch (UnsupportedEncodingException e) {
throw new IllegalStateException("Should never happen", e);
}
}
public static String describe(Object o) {
try {
if (o.getClass().getMethod("toString").getDeclaringClass() != Object.class) {
String str = o.toString();
if (str != null) {
return str;
}
}
} catch (Exception e) {
// fallback
}
return o.getClass().getName();
}
public static boolean isEmpty(@Nullable String str) {
return str == null || str.isEmpty();
}
public static boolean isNotEmpty(String str) {
return !StringUtils.isEmpty(str);
}
public static boolean isBlank(@Nullable String str) {
int strLen;
if (str == null || (strLen = str.length()) == 0) {
return true;
}
for (int i = 0; i < strLen; i++) {
if (!Character.isWhitespace(str.charAt(i))) {
return false;
}
}
return true;
}
public static String md5(String s) {
try {
return md5(new ByteArrayInputStream(s.getBytes(StandardCharsets.UTF_8)));
} catch (IOException e) {
// Should never occur
throw new IllegalStateException(e);
}
}
public static String md5(InputStream data) throws IOException {
MessageDigest md;
try {
md = MessageDigest.getInstance("MD5");
} catch (NoSuchAlgorithmException e) {
// Should never occur
throw new IllegalStateException(e);
}
int bufLen = 8192;
final byte[] buffer = new byte[bufLen];
int read = data.read(buffer, 0, bufLen);
while (read > -1) {
md.update(buffer, 0, read);
read = data.read(buffer, 0, bufLen);
}
byte[] array = md.digest();
StringBuilder sb = new StringBuilder();
for (int i = 0; i < array.length; ++i) {
sb.append(Integer.toHexString((array[i] & 0xFF) | 0x100).substring(1, 3));
}
return sb.toString();
}
public static boolean equalsIgnoringTrailingSlash(String aString, String anotherString) {
return withTrailingSlash(aString).equals(withTrailingSlash(anotherString));
}
private static String withTrailingSlash(String str) {
if (!str.endsWith("/")) {
return str + '/';
}
return str;
}
}