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org.apache.cxf.common.util.StringUtils Maven / Gradle / Ivy
/**
* 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.cxf.common.util;
import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public final class StringUtils {
public static final Map PATTERN_MAP = new HashMap();
static {
String patterns[] = {"/", " ", ":", "," , ";", "="};
for (String p : patterns) {
PATTERN_MAP.put(p, Pattern.compile(p));
}
}
private StringUtils() {
}
public static String[] split(String s, String regex) {
Pattern p = PATTERN_MAP.get(regex);
if (p != null) {
return p.split(s);
}
return s.split(regex);
}
public static String[] split(String s, String regex, int limit) {
Pattern p = PATTERN_MAP.get(regex);
if (p != null) {
return p.split(s, limit);
}
return s.split(regex, limit);
}
public static String extract(String string, String startToken, String endToken) {
int start = string.indexOf(startToken) + startToken.length();
int end = string.lastIndexOf(endToken);
if (start == -1 || end == -1) {
return null;
}
return string.substring(start, end);
}
public static String wrapper(String string, String startToken, String endToken) {
StringBuilder sb = new StringBuilder();
sb.append(startToken);
sb.append(string);
sb.append(endToken);
return sb.toString();
}
public static boolean isFileExist(String file) {
return new File(file).exists() && new File(file).isFile();
}
public static boolean isFileAbsolute(String file) {
return isFileExist(file) && new File(file).isAbsolute();
}
public static URL getURL(String spec) throws MalformedURLException {
try {
return new URL(spec);
} catch (MalformedURLException e) {
return new File(spec).toURI().toURL();
}
}
public static boolean isEmpty(String str) {
if (str != null) {
int len = str.length();
for (int x = 0; x < len; ++x) {
if (str.charAt(x) > ' ') {
return false;
}
}
}
return true;
}
public static boolean isEmpty(List list) {
if (list == null || list.size() == 0) {
return true;
}
if (list.size() == 1 && isEmpty(list.get(0))) {
return true;
}
return false;
}
public static boolean isEqualUri(String uri1, String uri2) {
if (uri1.substring(uri1.length() - 1).equals("/") && !uri2.substring(uri2.length() - 1).equals("/")) {
return uri1.substring(0, uri1.length() - 1).equals(uri2);
} else if (uri2.substring(uri2.length() - 1).equals("/")
&& !uri1.substring(uri1.length() - 1).equals("/")) {
return uri2.substring(0, uri2.length() - 1).equals(uri1);
} else {
return uri1.equals(uri2);
}
}
public static String diff(String str1, String str2) {
int index = str1.lastIndexOf(str2);
if (index > -1) {
return str1.substring(str2.length());
}
return str1;
}
public static List getParts(String str, String separator) {
List ret = new ArrayList();
List parts = Arrays.asList(split(str, separator));
for (String part : parts) {
if (!isEmpty(part)) {
ret.add(part);
}
}
return ret;
}
public static String getFirstNotEmpty(String str, String separator) {
List parts = Arrays.asList(split(str, separator));
for (String part : parts) {
if (!isEmpty(part)) {
return part;
}
}
return str;
}
public static String getFirstNotEmpty(List list) {
if (isEmpty(list)) {
return null;
}
for (String item : list) {
if (!isEmpty(item)) {
return item;
}
}
return null;
}
public static List getFound(String contents, String regex) {
if (isEmpty(regex) || isEmpty(contents)) {
return null;
}
List results = new ArrayList();
Pattern pattern = Pattern.compile(regex, Pattern.UNICODE_CASE);
Matcher matcher = pattern.matcher(contents);
while (matcher.find()) {
if (matcher.groupCount() > 0) {
results.add(matcher.group(1));
} else {
results.add(matcher.group());
}
}
return results;
}
public static String getFirstFound(String contents, String regex) {
List founds = getFound(contents, regex);
if (isEmpty(founds)) {
return null;
}
return founds.get(0);
}
public static String formatVersionNumber(String target) {
List found = StringUtils.getFound(target, "\\d+\\.\\d+\\.?\\d*");
if (isEmpty(found)) {
return target;
}
return getFirstNotEmpty(found);
}
public static String addDefaultPortIfMissing(String urlString) {
return addDefaultPortIfMissing(urlString, "80");
}
public static String addDefaultPortIfMissing(String urlString, String defaultPort) {
URL url = null;
try {
url = new URL(urlString);
} catch (MalformedURLException e) {
return urlString;
}
if (url.getPort() != -1) {
return urlString;
}
String regex = "http://([^/]+)";
String found = StringUtils.getFirstFound(urlString, regex);
String replacer = "http://" + found + ":" + defaultPort;
if (!StringUtils.isEmpty(found)) {
urlString = urlString.replaceFirst(regex, replacer);
}
return urlString;
}
/**
* Return input string with first character in upper case.
* @param name input string.
* @return capitalized form.
*/
public static String capitalize(String name) {
if (name == null || name.length() == 0) {
return name;
}
char chars[] = name.toCharArray();
chars[0] = Character.toUpperCase(chars[0]);
return new String(chars);
}
public static String uncapitalize(String str) {
if (str == null || str.length() == 0) {
return str;
}
return new StringBuilder(str.length())
.append(Character.toLowerCase(str.charAt(0)))
.append(str.substring(1))
.toString();
}
}
