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/*
HTTP stub server written in Java with embedded Jetty
Copyright (C) 2012 Alexander Zagniotov, Isa Goksu and Eric Mrak
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see .
*/
package by.stub.utils;
import by.stub.annotations.CoberturaIgnore;
import by.stub.repackaged.org.apache.commons.codec.binary.Base64;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;
import java.nio.charset.CharsetEncoder;
import java.util.Locale;
import java.util.Map;
import java.util.Scanner;
/**
* @author Alexander Zagniotov
* @since 10/27/12, 12:09 AM
*/
public final class StringUtils {
public static final String NOT_PROVIDED = "Not provided";
private StringUtils() {
}
public static final int PAD_LIMIT = 8192;
public static final String TEMPLATE_TOKEN_LEFT = "<%";
public static final String TEMPLATE_TOKEN_RIGHT = "%>";
public static final String UTF_8 = "UTF-8";
public static final String FAILED = "Failed to load response content using relative path specified in 'file' during YAML parse time. Check terminal for warnings, and that response content exists in relative path specified in 'file'";
private static final CharsetEncoder US_ASCII_ENCODER = Charset.forName("US-ASCII").newEncoder();
public static boolean isUSAscii(final String toTest) {
return US_ASCII_ENCODER.canEncode(toTest);
}
public static boolean isSet(final String toTest) {
return (ObjectUtils.isNotNull(toTest) && toTest.trim().length() > 0);
}
public static String toUpper(final String toUpper) {
if (!isSet(toUpper)) {
return "";
}
return toUpper.toUpperCase(Locale.US);
}
public static String toLower(final String toLower) {
if (!isSet(toLower)) {
return "";
}
return toLower.toLowerCase(Locale.US);
}
public static Charset charsetUTF8() {
return Charset.forName(StringUtils.UTF_8);
}
public static String newStringUtf8(final byte[] bytes) {
return new String(bytes, StringUtils.charsetUTF8());
}
public static byte[] getBytesUtf8(final String string) {
return string.getBytes(StringUtils.charsetUTF8());
}
public static String inputStreamToString(final InputStream inputStream) {
if (ObjectUtils.isNull(inputStream)) {
return "Could not convert empty or null input stream to string";
}
// Regex \A matches the beginning of input. This effectively tells Scanner to tokenize
// the entire stream, from beginning to (illogical) next beginning.
return new Scanner(inputStream, StringUtils.UTF_8).useDelimiter("\\A").next().trim();
}
public static String buildToken(final String propertyName, final int capturingGroupIdx) {
return String.format("%s.%s", propertyName, capturingGroupIdx);
}
public static String replaceTokens(final byte[] stringBytes, Map tokensAndValues) {
String template = StringUtils.newStringUtf8(stringBytes);
for (Map.Entry entry : tokensAndValues.entrySet()) {
final String regexifiedKey = String.format("%s\\s{0,}%s\\s{0,}%s", StringUtils.TEMPLATE_TOKEN_LEFT, entry.getKey(), StringUtils.TEMPLATE_TOKEN_RIGHT);
template = template.replaceAll(regexifiedKey, entry.getValue());
}
return template;
}
public static String escapeHtmlEntities(final String toBeEscaped) {
return toBeEscaped.replaceAll("<", "<").replaceAll(">", ">");
}
public static String trimSpacesBetweenCSVElements(final String toBeFiltered) {
return toBeFiltered.replaceAll("\",\\s+\"", "\",\"").replaceAll(",\\s+", ",");
}
public static String removeSquareBrackets(final String toBeFiltered) {
return toBeFiltered.replaceAll("%5B|%5D|\\[|]", "");
}
public static boolean isWithinSquareBrackets(final String toCheck) {
if (toCheck.startsWith("%5B") && toCheck.endsWith("%5D")) {
return true;
}
return toCheck.startsWith("[") && toCheck.endsWith("]");
}
public static String decodeUrlEncodedQuotes(final String toBeFiltered) {
return toBeFiltered.replaceAll("%22", "\"").replaceAll("%27", "'");
}
public static String encodeSingleQuotes(final String toBeEncoded) {
return toBeEncoded.replaceAll("'", "%27");
}
public static String extractFilenameExtension(final String filename) {
final int dotLocation = filename.lastIndexOf('.');
return filename.substring(dotLocation);
}
@CoberturaIgnore
public static String constructUserAgentName() {
final Package pkg = StringUtils.class.getPackage();
final String implementationVersion = StringUtils.isSet(pkg.getImplementationVersion()) ?
pkg.getImplementationVersion() : "x.x.xx";
return String.format("stubby4j/%s (HTTP stub client request)", implementationVersion);
}
public static String encodeBase64(final String toEncode) {
return Base64.encodeBase64String(StringUtils.getBytesUtf8(toEncode));
}
public static int calculateStringLength(String post) {
if (StringUtils.isSet(post)) {
return post.getBytes(StringUtils.charsetUTF8()).length;
}
return 0;
}
public static String objectToString(final Object fieldObject) {
if (ObjectUtils.isNull(fieldObject)) {
return NOT_PROVIDED;
}
if (fieldObject instanceof byte[]) {
final byte[] objectBytes = (byte[]) fieldObject;
final String toTest = StringUtils.newStringUtf8(objectBytes);
if (!StringUtils.isUSAscii(toTest)) {
return "Loaded file is binary - it's content is not displayable";
} else if (toTest.equals(StringUtils.FAILED)) {
return StringUtils.FAILED;
}
try {
return new String(objectBytes, StringUtils.UTF_8);
} catch (UnsupportedEncodingException e) {
return new String(objectBytes);
}
} else {
final String valueAsStr = (ObjectUtils.isNotNull(fieldObject) ? fieldObject.toString().trim() : "");
return (!valueAsStr.equalsIgnoreCase("null") ? valueAsStr : "");
}
}
/*
http://commons.apache.org/proper/commons-lang/apidocs/src-html/org/apache/commons/lang3/StringUtils.html
*/
public static String join(final String[] array, final char separator) {
if (array == null) {
return null;
}
final int startIndex = 0;
final int endIndex = array.length;
final int noOfItems = endIndex - startIndex;
if (noOfItems <= 0) {
return "";
}
final StringBuilder buf = new StringBuilder(noOfItems * 16);
for (int i = startIndex; i < endIndex; i++) {
if (i > startIndex) {
buf.append(separator);
}
if (array[i] != null) {
buf.append(array[i]);
}
}
return buf.toString();
}
/*
http://commons.apache.org/proper/commons-lang/apidocs/src-html/org/apache/commons/lang3/StringUtils.html
*/
public static String repeat(final String str, final int repeat) {
// Performance tuned for 2.0 (JDK1.4)
if (str == null) {
return null;
}
if (repeat <= 0) {
return "";
}
final int inputLength = str.length();
if (repeat == 1 || inputLength == 0) {
return str;
}
if (inputLength == 1 && repeat <= PAD_LIMIT) {
return repeat(str.charAt(0), repeat);
}
final int outputLength = inputLength * repeat;
switch (inputLength) {
case 1:
return repeat(str.charAt(0), repeat);
case 2:
final char ch0 = str.charAt(0);
final char ch1 = str.charAt(1);
final char[] output2 = new char[outputLength];
for (int i = repeat * 2 - 2; i >= 0; i--, i--) {
output2[i] = ch0;
output2[i + 1] = ch1;
}
return new String(output2);
default:
final StringBuilder buf = new StringBuilder(outputLength);
for (int i = 0; i < repeat; i++) {
buf.append(str);
}
return buf.toString();
}
}
private static String repeat(final char ch, final int repeat) {
final char[] buf = new char[repeat];
for (int i = repeat - 1; i >= 0; i--) {
buf[i] = ch;
}
return new String(buf);
}
}
