/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.camel.maven.connector.util;
import java.util.List;
import java.util.Map;
/**
* Utility methods for String.
*/
public final class StringHelper {
private StringHelper() {
}
/**
* Converts the value to use dash style instead of upper cased
*/
public static String camelCaseToDash(String value) {
StringBuilder sb = new StringBuilder(value.length());
boolean dash = false;
for (char c : value.toCharArray()) {
// skip dash in start
if (sb.length() > 0 & Character.isUpperCase(c)) {
dash = true;
}
if (dash) {
sb.append('-');
sb.append(Character.toLowerCase(c));
} else {
// lower case first
if (sb.length() == 0) {
sb.append(Character.toLowerCase(c));
} else {
sb.append(c);
}
}
dash = false;
}
return sb.toString();
}
/**
* Returns the string value (uses empty string for <tt>null</tt> values)
*/
public static String nullSafe(String text) {
return text != null ? text : "";
}
/**
* Returns true if the given text is null or empty string or has <tt>null</tt> as the value
*/
public static boolean isNullOrEmpty(String text) {
return text == null || text.length() == 0 || "null".equals(text);
}
public static String safeNull(String text) {
if (isNullOrEmpty(text)) {
return "";
} else {
return text;
}
}
/**
* Returns the value or the defaultValue if it is null
*/
public static String getOrElse(String text, String defaultValue) {
return (text != null) ? text : defaultValue;
}
/**
* Returns the string after the given token
*
* @param text the text
* @param after the token
* @return the text after the token, or <tt>null</tt> if text does not contain the token
*/
public static String after(String text, String after) {
if (!text.contains(after)) {
return null;
}
return text.substring(text.indexOf(after) + after.length());
}
/**
* Returns the canonical class name by removing any generic type information.
*/
public static String canonicalClassName(String className) {
// remove generics
int pos = className.indexOf('<');
if (pos != -1) {
return className.substring(0, pos);
} else {
return className;
}
}
/**
* Returns the text wrapped double quotes
*/
public static String doubleQuote(String text) {
return quote(text, "\"");
}
/**
* Returns the text wrapped single quotes
*/
public static String singleQuote(String text) {
return quote(text, "'");
}
/**
* Wraps the text in the given quote text
*
* @param text the text to wrap in quotes
* @param quote the quote text added to the prefix and postfix of the text
*
* @return the text wrapped in the given quotes
*/
public static String quote(String text, String quote) {
return quote + text + quote;
}
/**
* Clips the text between the start and end markers
*/
public static String between(String text, String start, String end) {
int pos = text.indexOf(start);
if (pos > 0) {
text = text.substring(pos + 1);
}
int pos2 = text.lastIndexOf(end);
if (pos2 > 0) {
text = text.substring(0, pos2);
}
return text;
}
/**
* Capitalizes the name as a title
*
* @param name the name
* @return as a title
*/
public static String asTitle(String name) {
StringBuilder sb = new StringBuilder();
for (char c : name.toCharArray()) {
boolean upper = Character.isUpperCase(c);
boolean first = sb.length() == 0;
if (first) {
sb.append(Character.toUpperCase(c));
} else if (upper) {
sb.append(' ');
sb.append(c);
} else {
sb.append(Character.toLowerCase(c));
}
}
return sb.toString().trim();
}
/**
* Gets the value with the key in a safe way, eg returning an empty string if there was no value for the key.
*/
public static String getSafeValue(String key, List<Map<String, String>> rows) {
for (Map<String, String> row : rows) {
String value = row.get(key);
if (value != null) {
return value;
}
}
return "";
}
/**
* Gets the value with the key in a safe way, eg returning an empty string if there was no value for the key.
*/
public static String getSafeValue(String key, Map<String, String> rows) {
String value = rows.get(key);
if (value != null) {
return value;
}
return "";
}
public static String getShortJavaType(String javaType) {
if (javaType.startsWith("java.util.Map")) {
return "Map";
} else if (javaType.startsWith("java.util.Set")) {
return "Set";
} else if (javaType.startsWith("java.util.List")) {
return "List";
}
int pos = javaType.lastIndexOf(".");
if (pos != -1) {
return javaType.substring(pos + 1);
} else {
return javaType;
}
}
}