/*
* Copyright 2008-2016 the original author or authors.
*
* 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 com.nominanuda.zen.common;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.text.MessageFormat;
import java.text.Normalizer;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.function.Function;
import java.util.regex.Pattern;
import javax.annotation.concurrent.ThreadSafe;
import com.nominanuda.zen.stereotype.ScopedSingletonFactory;
@ThreadSafe
public class Str {
public static final Str STR = ScopedSingletonFactory.getInstance().buildJvmSingleton(Str.class);
public static final Charset UTF8 = Charset.forName("UTF-8");
public static final Charset ASCII = StandardCharsets.US_ASCII;
public boolean nullOrEmpty(String s) {
return s == null || 0 == s.length();
}
public boolean notNullOrEmpty(String s) {
return ! nullOrEmpty(s);
}
public boolean nullOrBlank(String s) {
return s == null || "".equals(s.trim());
}
public boolean notNullOrBlank(String s) {
return ! nullOrBlank(s);
}
public byte[] getBytesUtf8(String s) {
return s.getBytes(UTF8);
}
public <T> String join1(String separator, Object... strings) {
int len = strings.length;
StringBuilder sb = new StringBuilder();
for(int i = 0; i < len; i++) {
sb.append(strings[i].toString());
if(i < len - 1) {
sb.append(separator);
}
}
return sb.toString();
}
public <T> String join(String separator, Object[] strings) {
int len = strings.length;
StringBuilder sb = new StringBuilder();
for(int i = 0; i < len; i++) {
sb.append(strings[i].toString());
if(i < len - 1) {
sb.append(separator);
}
}
return sb.toString();
}
private class ToString<T> implements Function<T, String> {
@Override
public String apply(T t) {
return t.toString();
}
};
@SuppressWarnings("unchecked")
private final <T> ToString<T> toStringy() {
return (ToString<T>) toStringyObj;
}
private final ToString<Object> toStringyObj = new ToString<Object>();
public <T> String join(String separator, Iterable<T> collection) {
return join(separator, collection, toStringy());
}
public <T> String join(String separator, Iterable<T> collection, Function<T, String> f) {
return join(separator, collection.iterator(), f);
}
public String joinArgs(String separator, Object... strings) {
int len = strings.length;
StringBuilder sb = new StringBuilder();
for (int i = 0; i < len; i++) {
sb.append(strings[i].toString());
if (i < len - 1) {
sb.append(separator);
}
}
return sb.toString();
}
public <T> String join(String separator, Iterator<T> itr) {
return join(separator, itr, toStringy());
}
public <T> String join(String separator, Iterator<T> itr, Function<T, String> f) {
StringBuilder sb = new StringBuilder();
while(itr.hasNext()) {
sb.append(f.apply(itr.next()));
if(itr.hasNext()) {
sb.append(separator);
}
}
return sb.toString();
}
public List<String> splitAndTrim(String str, String regex) {
return splitAndTrim(str, Pattern.compile(regex));
}
public List<String> splitAndTrim(String str, Pattern regex) {
String[] arr = regex.split(str);
LinkedList<String> l = new LinkedList<String>();
for(String s : arr) {
l.add(s.trim());
}
return l;
}
public String ntimes(CharSequence cs, int times) {
StringBuilder sb = new StringBuilder();
for(int i = 0; i < times; i++) {
sb.append(cs);
}
return sb.toString();
}
public String fmt(String pattern, Object... arguments) throws NullPointerException {
for(int i = 0; i < arguments.length; i++) {
if(null == arguments[i]) {
throw new NullPointerException("arguments " + i + " is null");
} else {
arguments[i] = arguments[i].toString();
}
}
return MessageFormat.format(pattern, arguments);
}
public String diacriticsAndMoreReplace(String str) {
return nonDiacriticsReplace(diacriticsReplace(str));
}
private static final Pattern DIACRITICS_REX = Pattern
.compile("[\\p{InCombiningDiacriticalMarks}\\p{IsLm}\\p{IsSk}]+");
public String diacriticsReplace(String str) {
str = Normalizer.normalize(str, Normalizer.Form.NFD);
str = DIACRITICS_REX.matcher(str).replaceAll("");
return str;
}
private String nonDiacriticsReplace(String cs) {
StringBuilder sb = new StringBuilder();
int len = cs.length();
for (int i = 0; i < len; i++) {
sb.append(nonDiacriticsOf(cs.charAt(i)));
}
return sb.toString();
}
private Object nonDiacriticsOf(char ch) {
switch (ch) {
case 'ß':
return "ss";
case 'æ':
return "ae";
case 'ø':
return 'o';
// case '©':
// return 'c';
case '\u00D0':// German Ð ð
case '\u0110':
case '\u0189':
return 'D';
case '\u00F0':
case '\u0256':
case '\u0111':
return 'd';
case '\u00DE':// Þ þ
return "TH"; // thorn þ
case '\u00FE':
return "th"; // thorn þ
default:
return ch;
}
}
public String stripWs(CharSequence s) {
int len = s.length();
char[] res = new char[len];
int written = 0;
for(int i = 0; i < len; i++) {
char c = s.charAt(i);
if(! Character.isWhitespace(c)) {
res[written++] = c;
}
}
return new String(res, 0, written);
}
}