content/site/apidocs-7.1.0/src-html/org/apache/juneau/internal/StringUtils.html

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html lang="en"> <head> <title>Source code</title> <link rel="stylesheet" type="text/css" href="../../../../../javadoc.css" title="Style"> </head> <body> <div class="sourceContainer"> <pre>001// ***************************************************************************************************************************<a name="line.1"></a> 002// * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file *<a name="line.2"></a> 003// * distributed with this work for additional information regarding copyright ownership. The ASF licenses this file *<a name="line.3"></a> 004// * to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance *<a name="line.4"></a> 005// * with the License. You may obtain a copy of the License at *<a name="line.5"></a> 006// * *<a name="line.6"></a> 007// * http://www.apache.org/licenses/LICENSE-2.0 *<a name="line.7"></a> 008// * *<a name="line.8"></a> 009// * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an *<a name="line.9"></a> 010// * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the *<a name="line.10"></a> 011// * specific language governing permissions and limitations under the License. *<a name="line.11"></a> 012// ***************************************************************************************************************************<a name="line.12"></a> 013package org.apache.juneau.internal;<a name="line.13"></a> 014<a name="line.14"></a> 015import static org.apache.juneau.internal.ThrowableUtils.*;<a name="line.15"></a> 016<a name="line.16"></a> 017import java.io.*;<a name="line.17"></a> 018import java.lang.reflect.*;<a name="line.18"></a> 019import java.math.*;<a name="line.19"></a> 020import java.net.*;<a name="line.20"></a> 021import java.nio.*;<a name="line.21"></a> 022import java.nio.charset.*;<a name="line.22"></a> 023import java.text.*;<a name="line.23"></a> 024import java.util.*;<a name="line.24"></a> 025import java.util.concurrent.atomic.*;<a name="line.25"></a> 026import java.util.regex.*;<a name="line.26"></a> 027<a name="line.27"></a> 028import javax.xml.bind.*;<a name="line.28"></a> 029<a name="line.29"></a> 030import org.apache.juneau.*;<a name="line.30"></a> 031import org.apache.juneau.json.*;<a name="line.31"></a> 032import org.apache.juneau.parser.*;<a name="line.32"></a> 033import org.apache.juneau.parser.ParseException;<a name="line.33"></a> 034<a name="line.34"></a> 035/**<a name="line.35"></a> 036 * Reusable string utility methods.<a name="line.36"></a> 037 */<a name="line.37"></a> 038public final class StringUtils {<a name="line.38"></a> 039<a name="line.39"></a> 040 private static final AsciiSet numberChars = AsciiSet.create("-xX.+-#pP0123456789abcdefABCDEF");<a name="line.40"></a> 041 private static final AsciiSet firstNumberChars =AsciiSet.create("+-.#0123456789");<a name="line.41"></a> 042 private static final AsciiSet octChars = AsciiSet.create("01234567");<a name="line.42"></a> 043 private static final AsciiSet decChars = AsciiSet.create("0123456789");<a name="line.43"></a> 044 private static final AsciiSet hexChars = AsciiSet.create("0123456789abcdefABCDEF");<a name="line.44"></a> 045<a name="line.45"></a> 046 // Maps 6-bit nibbles to BASE64 characters.<a name="line.46"></a> 047 private static final char[] base64m1 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".toCharArray();<a name="line.47"></a> 048<a name="line.48"></a> 049 // Characters that do not need to be URL-encoded<a name="line.49"></a> 050 private static final AsciiSet unencodedChars = AsciiSet.create().ranges("a-z","A-Z","0-9").chars("-_.!~*'()\\").build();<a name="line.50"></a> 051<a name="line.51"></a> 052 // Maps BASE64 characters to 6-bit nibbles.<a name="line.52"></a> 053 private static final byte[] base64m2 = new byte[128];<a name="line.53"></a> 054 static {<a name="line.54"></a> 055 for (int i = 0; i < 64; i++)<a name="line.55"></a> 056 base64m2[base64m1[i]] = (byte)i;<a name="line.56"></a> 057 }<a name="line.57"></a> 058<a name="line.58"></a> 059 /**<a name="line.59"></a> 060 * Parses a number from the specified reader stream.<a name="line.60"></a> 061 * <a name="line.61"></a> 062 * @param r The reader to parse the string from.<a name="line.62"></a> 063 * @param type<a name="line.63"></a> 064 * The number type to created.<a name="line.64"></a> 065 * Can be any of the following:<a name="line.65"></a> 066 * <ul><a name="line.66"></a> 067 * <li> Integer<a name="line.67"></a> 068 * <li> Double<a name="line.68"></a> 069 * <li> Float<a name="line.69"></a> 070 * <li> Long<a name="line.70"></a> 071 * <li> Short<a name="line.71"></a> 072 * <li> Byte<a name="line.72"></a> 073 * <li> BigInteger<a name="line.73"></a> 074 * <li> BigDecimal<a name="line.74"></a> 075 * </ul><a name="line.75"></a> 076 * If <jk>null</jk>, uses the best guess.<a name="line.76"></a> 077 * @throws IOException If a problem occurred trying to read from the reader.<a name="line.77"></a> 078 * @return The parsed number.<a name="line.78"></a> 079 * @throws Exception<a name="line.79"></a> 080 */<a name="line.80"></a> 081 public static Number parseNumber(ParserReader r, Class<? extends Number> type) throws Exception {<a name="line.81"></a> 082 return parseNumber(parseNumberString(r), type);<a name="line.82"></a> 083 }<a name="line.83"></a> 084<a name="line.84"></a> 085 /**<a name="line.85"></a> 086 * Reads a numeric string from the specified reader.<a name="line.86"></a> 087 * <a name="line.87"></a> 088 * @param r The reader to read form.<a name="line.88"></a> 089 * @return The parsed number string.<a name="line.89"></a> 090 * @throws Exception<a name="line.90"></a> 091 */<a name="line.91"></a> 092 public static String parseNumberString(ParserReader r) throws Exception {<a name="line.92"></a> 093 r.mark();<a name="line.93"></a> 094 int c = 0;<a name="line.94"></a> 095 while (true) {<a name="line.95"></a> 096 c = r.read();<a name="line.96"></a> 097 if (c == -1)<a name="line.97"></a> 098 break;<a name="line.98"></a> 099 if (! numberChars.contains((char)c)) {<a name="line.99"></a> 100 r.unread();<a name="line.100"></a> 101 break;<a name="line.101"></a> 102 }<a name="line.102"></a> 103 }<a name="line.103"></a> 104 return r.getMarked();<a name="line.104"></a> 105 }<a name="line.105"></a> 106<a name="line.106"></a> 107 /**<a name="line.107"></a> 108 * Parses a number from the specified string.<a name="line.108"></a> 109 * <a name="line.109"></a> 110 * @param s The string to parse the number from.<a name="line.110"></a> 111 * @param type<a name="line.111"></a> 112 * The number type to created.<a name="line.112"></a> 113 * Can be any of the following:<a name="line.113"></a> 114 * <ul><a name="line.114"></a> 115 * <li> Integer<a name="line.115"></a> 116 * <li> Double<a name="line.116"></a> 117 * <li> Float<a name="line.117"></a> 118 * <li> Long<a name="line.118"></a> 119 * <li> Short<a name="line.119"></a> 120 * <li> Byte<a name="line.120"></a> 121 * <li> BigInteger<a name="line.121"></a> 122 * <li> BigDecimal<a name="line.122"></a> 123 * </ul><a name="line.123"></a> 124 * If <jk>null</jk> or <code>Number</code>, uses the best guess.<a name="line.124"></a> 125 * @return The parsed number, or <jk>null</jk> if the string was null.<a name="line.125"></a> 126 * @throws ParseException<a name="line.126"></a> 127 */<a name="line.127"></a> 128 public static Number parseNumber(String s, Class<? extends Number> type) throws ParseException {<a name="line.128"></a> 129 if (s == null)<a name="line.129"></a> 130 return null;<a name="line.130"></a> 131 if (s.isEmpty())<a name="line.131"></a> 132 s = "0";<a name="line.132"></a> 133 if (type == null)<a name="line.133"></a> 134 type = Number.class;<a name="line.134"></a> 135<a name="line.135"></a> 136 try {<a name="line.136"></a> 137 // Determine the data type if it wasn't specified.<a name="line.137"></a> 138 boolean isAutoDetect = (type == Number.class);<a name="line.138"></a> 139 boolean isDecimal = false;<a name="line.139"></a> 140 if (isAutoDetect) {<a name="line.140"></a> 141 // If we're auto-detecting, then we use either an Integer, Long, or Double depending on how<a name="line.141"></a> 142 // long the string is.<a name="line.142"></a> 143 // An integer range is -2,147,483,648 to 2,147,483,647<a name="line.143"></a> 144 // An long range is -9,223,372,036,854,775,808 to +9,223,372,036,854,775,807<a name="line.144"></a> 145 isDecimal = isDecimal(s);<a name="line.145"></a> 146 if (isDecimal) {<a name="line.146"></a> 147 if (s.length() > 20)<a name="line.147"></a> 148 type = Double.class;<a name="line.148"></a> 149 else if (s.length() >= 10)<a name="line.149"></a> 150 type = Long.class;<a name="line.150"></a> 151 else<a name="line.151"></a> 152 type = Integer.class;<a name="line.152"></a> 153 }<a name="line.153"></a> 154 else if (isFloat(s))<a name="line.154"></a> 155 type = Double.class;<a name="line.155"></a> 156 else<a name="line.156"></a> 157 throw new NumberFormatException(s);<a name="line.157"></a> 158 }<a name="line.158"></a> 159<a name="line.159"></a> 160 if (type == Double.class || type == Double.TYPE) {<a name="line.160"></a> 161 Double d = Double.valueOf(s);<a name="line.161"></a> 162 Float f = Float.valueOf(s);<a name="line.162"></a> 163 if (isAutoDetect && (!isDecimal) && d.toString().equals(f.toString()))<a name="line.163"></a> 164 return f;<a name="line.164"></a> 165 return d;<a name="line.165"></a> 166 }<a name="line.166"></a> 167 if (type == Float.class || type == Float.TYPE)<a name="line.167"></a> 168 return Float.valueOf(s);<a name="line.168"></a> 169 if (type == BigDecimal.class)<a name="line.169"></a> 170 return new BigDecimal(s);<a name="line.170"></a> 171 if (type == Long.class || type == Long.TYPE || type == AtomicLong.class) {<a name="line.171"></a> 172 try {<a name="line.172"></a> 173 Long l = Long.decode(s);<a name="line.173"></a> 174 if (type == AtomicLong.class)<a name="line.174"></a> 175 return new AtomicLong(l);<a name="line.175"></a> 176 if (isAutoDetect && l >= Integer.MIN_VALUE && l <= Integer.MAX_VALUE) {<a name="line.176"></a> 177 // This occurs if the string is 10 characters long but is still a valid integer value.<a name="line.177"></a> 178 return l.intValue();<a name="line.178"></a> 179 }<a name="line.179"></a> 180 return l;<a name="line.180"></a> 181 } catch (NumberFormatException e) {<a name="line.181"></a> 182 if (isAutoDetect) {<a name="line.182"></a> 183 // This occurs if the string is 20 characters long but still falls outside the range of a valid long.<a name="line.183"></a> 184 return Double.valueOf(s);<a name="line.184"></a> 185 }<a name="line.185"></a> 186 throw e;<a name="line.186"></a> 187 }<a name="line.187"></a> 188 }<a name="line.188"></a> 189 if (type == Integer.class || type == Integer.TYPE)<a name="line.189"></a> 190 return Integer.decode(s);<a name="line.190"></a> 191 if (type == Short.class || type == Short.TYPE)<a name="line.191"></a> 192 return Short.decode(s);<a name="line.192"></a> 193 if (type == Byte.class || type == Byte.TYPE)<a name="line.193"></a> 194 return Byte.decode(s);<a name="line.194"></a> 195 if (type == BigInteger.class)<a name="line.195"></a> 196 return new BigInteger(s);<a name="line.196"></a> 197 if (type == AtomicInteger.class)<a name="line.197"></a> 198 return new AtomicInteger(Integer.decode(s));<a name="line.198"></a> 199 throw new ParseException("Unsupported Number type: {0}", type.getName());<a name="line.199"></a> 200 } catch (NumberFormatException e) {<a name="line.200"></a> 201 throw new ParseException("Invalid number: ''{0}'', class=''{1}''", s, type.getSimpleName()).initCause(e);<a name="line.201"></a> 202 }<a name="line.202"></a> 203 }<a name="line.203"></a> 204<a name="line.204"></a> 205 private static final Pattern fpRegex = Pattern.compile(<a name="line.205"></a> 206 "[+-]?(NaN|Infinity|((((\\p{Digit}+)(\\.)?((\\p{Digit}+)?)([eE][+-]?(\\p{Digit}+))?)|(\\.((\\p{Digit}+))([eE][+-]?(\\p{Digit}+))?)|(((0[xX](\\p{XDigit}+)(\\.)?)|(0[xX](\\p{XDigit}+)?(\\.)(\\p{XDigit}+)))[pP][+-]?(\\p{Digit}+)))[fFdD]?))[\\x00-\\x20]*"<a name="line.206"></a> 207 );<a name="line.207"></a> 208<a name="line.208"></a> 209 /**<a name="line.209"></a> 210 * Returns <jk>true</jk> if this string can be parsed by {@link #parseNumber(String, Class)}.<a name="line.210"></a> 211 * <a name="line.211"></a> 212 * @param s The string to check.<a name="line.212"></a> 213 * @return <jk>true</jk> if this string can be parsed without causing an exception.<a name="line.213"></a> 214 */<a name="line.214"></a> 215 public static boolean isNumeric(String s) {<a name="line.215"></a> 216 if (s == null || s.isEmpty())<a name="line.216"></a> 217 return false;<a name="line.217"></a> 218 if (! isFirstNumberChar(s.charAt(0)))<a name="line.218"></a> 219 return false;<a name="line.219"></a> 220 return isDecimal(s) || isFloat(s);<a name="line.220"></a> 221 }<a name="line.221"></a> 222<a name="line.222"></a> 223 /**<a name="line.223"></a> 224 * Returns <jk>true</jk> if the specified character is a valid first character for a number.<a name="line.224"></a> 225 * <a name="line.225"></a> 226 * @param c The character to test.<a name="line.226"></a> 227 * @return <jk>true</jk> if the specified character is a valid first character for a number.<a name="line.227"></a> 228 */<a name="line.228"></a> 229 public static boolean isFirstNumberChar(char c) {<a name="line.229"></a> 230 return firstNumberChars.contains(c);<a name="line.230"></a> 231 }<a name="line.231"></a> 232<a name="line.232"></a> 233 /**<a name="line.233"></a> 234 * Returns <jk>true</jk> if the specified string is a floating point number.<a name="line.234"></a> 235 * <a name="line.235"></a> 236 * @param s The string to check.<a name="line.236"></a> 237 * @return <jk>true</jk> if the specified string is a floating point number.<a name="line.237"></a> 238 */<a name="line.238"></a> 239 public static boolean isFloat(String s) {<a name="line.239"></a> 240 if (s == null || s.isEmpty())<a name="line.240"></a> 241 return false;<a name="line.241"></a> 242 if (! firstNumberChars.contains(s.charAt(0)))<a name="line.242"></a> 243 return (s.equals("NaN") || s.equals("Infinity"));<a name="line.243"></a> 244 int i = 0;<a name="line.244"></a> 245 int length = s.length();<a name="line.245"></a> 246 char c = s.charAt(0);<a name="line.246"></a> 247 if (c == '+' || c == '-')<a name="line.247"></a> 248 i++;<a name="line.248"></a> 249 if (i == length)<a name="line.249"></a> 250 return false;<a name="line.250"></a> 251 c = s.charAt(i++);<a name="line.251"></a> 252 if (c == '.' || decChars.contains(c)) {<a name="line.252"></a> 253 return fpRegex.matcher(s).matches();<a name="line.253"></a> 254 }<a name="line.254"></a> 255 return false;<a name="line.255"></a> 256 }<a name="line.256"></a> 257<a name="line.257"></a> 258 /**<a name="line.258"></a> 259 * Returns <jk>true</jk> if the specified string is numeric.<a name="line.259"></a> 260 * <a name="line.260"></a> 261 * @param s The string to check.<a name="line.261"></a> 262 * @return <jk>true</jk> if the specified string is numeric.<a name="line.262"></a> 263 */<a name="line.263"></a> 264 public static boolean isDecimal(String s) {<a name="line.264"></a> 265 if (s == null || s.isEmpty())<a name="line.265"></a> 266 return false;<a name="line.266"></a> 267 if (! firstNumberChars.contains(s.charAt(0)))<a name="line.267"></a> 268 return false;<a name="line.268"></a> 269 int i = 0;<a name="line.269"></a> 270 int length = s.length();<a name="line.270"></a> 271 char c = s.charAt(0);<a name="line.271"></a> 272 boolean isPrefixed = false;<a name="line.272"></a> 273 if (c == '+' || c == '-') {<a name="line.273"></a> 274 isPrefixed = true;<a name="line.274"></a> 275 i++;<a name="line.275"></a> 276 }<a name="line.276"></a> 277 if (i == length)<a name="line.277"></a> 278 return false;<a name="line.278"></a> 279 c = s.charAt(i++);<a name="line.279"></a> 280 if (c == '0' && length > (isPrefixed ? 2 : 1)) {<a name="line.280"></a> 281 c = s.charAt(i++);<a name="line.281"></a> 282 if (c == 'x' || c == 'X') {<a name="line.282"></a> 283 for (int j = i; j < length; j++) {<a name="line.283"></a> 284 if (! hexChars.contains(s.charAt(j)))<a name="line.284"></a> 285 return false;<a name="line.285"></a> 286 }<a name="line.286"></a> 287 } else if (octChars.contains(c)) {<a name="line.287"></a> 288 for (int j = i; j < length; j++)<a name="line.288"></a> 289 if (! octChars.contains(s.charAt(j)))<a name="line.289"></a> 290 return false;<a name="line.290"></a> 291 } else {<a name="line.291"></a> 292 return false;<a name="line.292"></a> 293 }<a name="line.293"></a> 294 } else if (c == '#') {<a name="line.294"></a> 295 for (int j = i; j < length; j++) {<a name="line.295"></a> 296 if (! hexChars.contains(s.charAt(j)))<a name="line.296"></a> 297 return false;<a name="line.297"></a> 298 }<a name="line.298"></a> 299 } else if (decChars.contains(c)) {<a name="line.299"></a> 300 for (int j = i; j < length; j++)<a name="line.300"></a> 301 if (! decChars.contains(s.charAt(j)))<a name="line.301"></a> 302 return false;<a name="line.302"></a> 303 } else {<a name="line.303"></a> 304 return false;<a name="line.304"></a> 305 }<a name="line.305"></a> 306 return true;<a name="line.306"></a> 307 }<a name="line.307"></a> 308<a name="line.308"></a> 309 /**<a name="line.309"></a> 310 * Convenience method for getting a stack trace as a string.<a name="line.310"></a> 311 * <a name="line.311"></a> 312 * @param t The throwable to get the stack trace from.<a name="line.312"></a> 313 * @return The same content that would normally be rendered via <code>t.printStackTrace()</code><a name="line.313"></a> 314 */<a name="line.314"></a> 315 public static String getStackTrace(Throwable t) {<a name="line.315"></a> 316 StringWriter sw = new StringWriter();<a name="line.316"></a> 317 try (PrintWriter pw = new PrintWriter(sw)) {<a name="line.317"></a> 318 t.printStackTrace(pw);<a name="line.318"></a> 319 }<a name="line.319"></a> 320 return sw.toString();<a name="line.320"></a> 321 }<a name="line.321"></a> 322<a name="line.322"></a> 323 /**<a name="line.323"></a> 324 * Join the specified tokens into a delimited string.<a name="line.324"></a> 325 * <a name="line.325"></a> 326 * @param tokens The tokens to join.<a name="line.326"></a> 327 * @param separator The delimiter.<a name="line.327"></a> 328 * @return The delimited string. If <code>tokens</code> is <jk>null</jk>, returns <jk>null</jk>.<a name="line.328"></a> 329 */<a name="line.329"></a> 330 public static String join(Object[] tokens, String separator) {<a name="line.330"></a> 331 if (tokens == null)<a name="line.331"></a> 332 return null;<a name="line.332"></a> 333 StringBuilder sb = new StringBuilder();<a name="line.333"></a> 334 for (int i = 0; i < tokens.length; i++) {<a name="line.334"></a> 335 if (i > 0)<a name="line.335"></a> 336 sb.append(separator);<a name="line.336"></a> 337 sb.append(tokens[i]);<a name="line.337"></a> 338 }<a name="line.338"></a> 339 return sb.toString();<a name="line.339"></a> 340 }<a name="line.340"></a> 341<a name="line.341"></a> 342 /**<a name="line.342"></a> 343 * Join the specified tokens into a delimited string.<a name="line.343"></a> 344 * <a name="line.344"></a> 345 * @param tokens The tokens to join.<a name="line.345"></a> 346 * @param d The delimiter.<a name="line.346"></a> 347 * @return The delimited string. If <code>tokens</code> is <jk>null</jk>, returns <jk>null</jk>.<a name="line.347"></a> 348 */<a name="line.348"></a> 349 public static String join(int[] tokens, String d) {<a name="line.349"></a> 350 if (tokens == null)<a name="line.350"></a> 351 return null;<a name="line.351"></a> 352 StringBuilder sb = new StringBuilder();<a name="line.352"></a> 353 for (int i = 0; i < tokens.length; i++) {<a name="line.353"></a> 354 if (i > 0)<a name="line.354"></a> 355 sb.append(d);<a name="line.355"></a> 356 sb.append(tokens[i]);<a name="line.356"></a> 357 }<a name="line.357"></a> 358 return sb.toString();<a name="line.358"></a> 359 }<a name="line.359"></a> 360<a name="line.360"></a> 361 /**<a name="line.361"></a> 362 * Join the specified tokens into a delimited string.<a name="line.362"></a> 363 * <a name="line.363"></a> 364 * @param tokens The tokens to join.<a name="line.364"></a> 365 * @param d The delimiter.<a name="line.365"></a> 366 * @return The delimited string. If <code>tokens</code> is <jk>null</jk>, returns <jk>null</jk>.<a name="line.366"></a> 367 */<a name="line.367"></a> 368 public static String join(Collection<?> tokens, String d) {<a name="line.368"></a> 369 if (tokens == null)<a name="line.369"></a> 370 return null;<a name="line.370"></a> 371 return join(tokens, d, new StringBuilder()).toString();<a name="line.371"></a> 372 }<a name="line.372"></a> 373<a name="line.373"></a> 374 /**<a name="line.374"></a> 375 * Joins the specified tokens into a delimited string and writes the output to the specified string builder.<a name="line.375"></a> 376 * <a name="line.376"></a> 377 * @param tokens The tokens to join.<a name="line.377"></a> 378 * @param d The delimiter.<a name="line.378"></a> 379 * @param sb The string builder to append the response to.<a name="line.379"></a> 380 * @return The same string builder passed in as <code>sb</code>.<a name="line.380"></a> 381 */<a name="line.381"></a> 382 public static StringBuilder join(Collection<?> tokens, String d, StringBuilder sb) {<a name="line.382"></a> 383 if (tokens == null)<a name="line.383"></a> 384 return sb;<a name="line.384"></a> 385 for (Iterator<?> iter = tokens.iterator(); iter.hasNext();) {<a name="line.385"></a> 386 sb.append(iter.next());<a name="line.386"></a> 387 if (iter.hasNext())<a name="line.387"></a> 388 sb.append(d);<a name="line.388"></a> 389 }<a name="line.389"></a> 390 return sb;<a name="line.390"></a> 391 }<a name="line.391"></a> 392<a name="line.392"></a> 393 /**<a name="line.393"></a> 394 * Joins the specified tokens into a delimited string.<a name="line.394"></a> 395 * <a name="line.395"></a> 396 * @param tokens The tokens to join.<a name="line.396"></a> 397 * @param d The delimiter.<a name="line.397"></a> 398 * @return The delimited string. If <code>tokens</code> is <jk>null</jk>, returns <jk>null</jk>.<a name="line.398"></a> 399 */<a name="line.399"></a> 400 public static String join(Object[] tokens, char d) {<a name="line.400"></a> 401 if (tokens == null)<a name="line.401"></a> 402 return null;<a name="line.402"></a> 403 return join(tokens, d, new StringBuilder()).toString();<a name="line.403"></a> 404 }<a name="line.404"></a> 405<a name="line.405"></a> 406 /**<a name="line.406"></a> 407 * Join the specified tokens into a delimited string and writes the output to the specified string builder.<a name="line.407"></a> 408 * <a name="line.408"></a> 409 * @param tokens The tokens to join.<a name="line.409"></a> 410 * @param d The delimiter.<a name="line.410"></a> 411 * @param sb The string builder to append the response to.<a name="line.411"></a> 412 * @return The same string builder passed in as <code>sb</code>.<a name="line.412"></a> 413 */<a name="line.413"></a> 414 public static StringBuilder join(Object[] tokens, char d, StringBuilder sb) {<a name="line.414"></a> 415 if (tokens == null)<a name="line.415"></a> 416 return sb;<a name="line.416"></a> 417 for (int i = 0; i < tokens.length; i++) {<a name="line.417"></a> 418 if (i > 0)<a name="line.418"></a> 419 sb.append(d);<a name="line.419"></a> 420 sb.append(tokens[i]);<a name="line.420"></a> 421 }<a name="line.421"></a> 422 return sb;<a name="line.422"></a> 423 }<a name="line.423"></a> 424<a name="line.424"></a> 425 /**<a name="line.425"></a> 426 * Join the specified tokens into a delimited string.<a name="line.426"></a> 427 * <a name="line.427"></a> 428 * @param tokens The tokens to join.<a name="line.428"></a> 429 * @param d The delimiter.<a name="line.429"></a> 430 * @return The delimited string. If <code>tokens</code> is <jk>null</jk>, returns <jk>null</jk>.<a name="line.430"></a> 431 */<a name="line.431"></a> 432 public static String join(int[] tokens, char d) {<a name="line.432"></a> 433 if (tokens == null)<a name="line.433"></a> 434 return null;<a name="line.434"></a> 435 StringBuilder sb = new StringBuilder();<a name="line.435"></a> 436 for (int i = 0; i < tokens.length; i++) {<a name="line.436"></a> 437 if (i > 0)<a name="line.437"></a> 438 sb.append(d);<a name="line.438"></a> 439 sb.append(tokens[i]);<a name="line.439"></a> 440 }<a name="line.440"></a> 441 return sb.toString();<a name="line.441"></a> 442 }<a name="line.442"></a> 443<a name="line.443"></a> 444 /**<a name="line.444"></a> 445 * Join the specified tokens into a delimited string.<a name="line.445"></a> 446 * <a name="line.446"></a> 447 * @param tokens The tokens to join.<a name="line.447"></a> 448 * @param d The delimiter.<a name="line.448"></a> 449 * @return The delimited string. If <code>tokens</code> is <jk>null</jk>, returns <jk>null</jk>.<a name="line.449"></a> 450 */<a name="line.450"></a> 451 public static String join(Collection<?> tokens, char d) {<a name="line.451"></a> 452 if (tokens == null)<a name="line.452"></a> 453 return null;<a name="line.453"></a> 454 StringBuilder sb = new StringBuilder();<a name="line.454"></a> 455 for (Iterator<?> iter = tokens.iterator(); iter.hasNext();) {<a name="line.455"></a> 456 sb.append(iter.next());<a name="line.456"></a> 457 if (iter.hasNext())<a name="line.457"></a> 458 sb.append(d);<a name="line.458"></a> 459 }<a name="line.459"></a> 460 return sb.toString();<a name="line.460"></a> 461 }<a name="line.461"></a> 462<a name="line.462"></a> 463 /**<a name="line.463"></a> 464 * Shortcut for calling <code>split(s, <js>','</js>)</code><a name="line.464"></a> 465 * <a name="line.465"></a> 466 * @param s The string to split. Can be <jk>null</jk>.<a name="line.466"></a> 467 * @return The tokens, or <jk>null</jk> if the string was null.<a name="line.467"></a> 468 */<a name="line.468"></a> 469 public static String[] split(String s) {<a name="line.469"></a> 470 return split(s, ',');<a name="line.470"></a> 471 }<a name="line.471"></a> 472<a name="line.472"></a> 473 /**<a name="line.473"></a> 474 * Splits a character-delimited string into a string array.<a name="line.474"></a> 475 * <a name="line.475"></a> 476 * <a name="line.476"></a> 477 * Does not split on escaped-delimiters (e.g. "\,");<a name="line.477"></a> 478 * Resulting tokens are trimmed of whitespace.<a name="line.478"></a> 479 * <a name="line.479"></a> 480 * <a name="line.480"></a> 481 * NOTE: This behavior is different than the Jakarta equivalent.<a name="line.481"></a> 482 * split("a,b,c",',') -> {"a","b","c"}<a name="line.482"></a> 483 * split("a, b ,c ",',') -> {"a","b","c"}<a name="line.483"></a> 484 * split("a,,c",',') -> {"a","","c"}<a name="line.484"></a> 485 * split(",,",',') -> {"","",""}<a name="line.485"></a> 486 * split("",',') -> {}<a name="line.486"></a> 487 * split(null,',') -> null<a name="line.487"></a> 488 * split("a,b\,c,d", ',', false) -> {"a","b\,c","d"}<a name="line.488"></a> 489 * split("a,b\\,c,d", ',', false) -> {"a","b\","c","d"}<a name="line.489"></a> 490 * split("a,b\,c,d", ',', true) -> {"a","b,c","d"}<a name="line.490"></a> 491 * <a name="line.491"></a> 492 * @param s The string to split. Can be <jk>null</jk>.<a name="line.492"></a> 493 * @param c The character to split on.<a name="line.493"></a> 494 * @return The tokens, or <jk>null</jk> if the string was null.<a name="line.494"></a> 495 */<a name="line.495"></a> 496 public static String[] split(String s, char c) {<a name="line.496"></a> 497 return split(s, c, Integer.MAX_VALUE);<a name="line.497"></a> 498 }<a name="line.498"></a> 499 <a name="line.499"></a> 500 /**<a name="line.500"></a> 501 * Same as {@link #split(String, char)} but limits the number of tokens returned.<a name="line.501"></a> 502 * <a name="line.502"></a> 503 * @param s The string to split. Can be <jk>null</jk>.<a name="line.503"></a> 504 * @param c The character to split on.<a name="line.504"></a> 505 * @param limit The maximum number of tokens to return.<a name="line.505"></a> 506 * @return The tokens, or <jk>null</jk> if the string was null.<a name="line.506"></a> 507 */<a name="line.507"></a> 508 public static String[] split(String s, char c, int limit) {<a name="line.508"></a> 509<a name="line.509"></a> 510 char[] unEscapeChars = new char[]{'\\', c};<a name="line.510"></a> 511<a name="line.511"></a> 512 if (s == null)<a name="line.512"></a> 513 return null;<a name="line.513"></a> 514 if (isEmpty(s))<a name="line.514"></a> 515 return new String[0];<a name="line.515"></a> 516 if (s.indexOf(c) == -1)<a name="line.516"></a> 517 return new String[]{s};<a name="line.517"></a> 518<a name="line.518"></a> 519 List<String> l = new LinkedList<>();<a name="line.519"></a> 520 char[] sArray = s.toCharArray();<a name="line.520"></a> 521 int x1 = 0, escapeCount = 0;<a name="line.521"></a> 522 limit--;<a name="line.522"></a> 523 for (int i = 0; i < sArray.length && limit > 0; i++) {<a name="line.523"></a> 524 if (sArray[i] == '\\') escapeCount++;<a name="line.524"></a> 525 else if (sArray[i]==c && escapeCount % 2 == 0) {<a name="line.525"></a> 526 String s2 = new String(sArray, x1, i-x1);<a name="line.526"></a> 527 String s3 = unEscapeChars(s2, unEscapeChars);<a name="line.527"></a> 528 l.add(s3.trim());<a name="line.528"></a> 529 limit--;<a name="line.529"></a> 530 x1 = i+1;<a name="line.530"></a> 531 }<a name="line.531"></a> 532 if (sArray[i] != '\\') escapeCount = 0;<a name="line.532"></a> 533 }<a name="line.533"></a> 534 String s2 = new String(sArray, x1, sArray.length-x1);<a name="line.534"></a> 535 String s3 = unEscapeChars(s2, unEscapeChars);<a name="line.535"></a> 536 l.add(s3.trim());<a name="line.536"></a> 537<a name="line.537"></a> 538 return l.toArray(new String[l.size()]);<a name="line.538"></a> 539 }<a name="line.539"></a> 540<a name="line.540"></a> 541 /**<a name="line.541"></a> 542 * Same as {@link #split(String, char)} except splits all strings in the input and returns a single result.<a name="line.542"></a> 543 * <a name="line.543"></a> 544 * @param s The string to split. Can be <jk>null</jk>.<a name="line.544"></a> 545 * @param c The character to split on.<a name="line.545"></a> 546 * @return The tokens.<a name="line.546"></a> 547 */<a name="line.547"></a> 548 public static String[] split(String[] s, char c) {<a name="line.548"></a> 549 if (s == null)<a name="line.549"></a> 550 return null;<a name="line.550"></a> 551 List<String> l = new LinkedList<>();<a name="line.551"></a> 552 for (String ss : s) {<a name="line.552"></a> 553 if (ss == null || ss.indexOf(c) == -1)<a name="line.553"></a> 554 l.add(ss);<a name="line.554"></a> 555 else<a name="line.555"></a> 556 l.addAll(Arrays.asList(split(ss, c)));<a name="line.556"></a> 557 }<a name="line.557"></a> 558 return l.toArray(new String[l.size()]);<a name="line.558"></a> 559 }<a name="line.559"></a> 560<a name="line.560"></a> 561 /**<a name="line.561"></a> 562 * Splits a list of key-value pairs into an ordered map.<a name="line.562"></a> 563 * <a name="line.563"></a> 564 * <a name="line.564"></a> 565 * Example:<a name="line.565"></a> 566 * <a name="line.566"></a> 567 * String in = <js>"foo=1;bar=2"</js>;<a name="line.567"></a> 568 * Map m = StringUtils.<jsm>splitMap</jsm>(in, <js>';'</js>, <js>'='</js>, <jk>true</jk>);<a name="line.568"></a> 569 * <a name="line.569"></a> 570 * <a name="line.570"></a> 571 * @param s The string to split.<a name="line.571"></a> 572 * @param delim The delimiter between the key-value pairs.<a name="line.572"></a> 573 * @param eq The delimiter between the key and value.<a name="line.573"></a> 574 * @param trim Trim strings after parsing.<a name="line.574"></a> 575 * @return The parsed map. Never <jk>null</jk>.<a name="line.575"></a> 576 */<a name="line.576"></a> 577 public static Map<String,String> splitMap(String s, char delim, char eq, boolean trim) {<a name="line.577"></a> 578<a name="line.578"></a> 579 char[] unEscapeChars = new char[]{'\\', delim, eq};<a name="line.579"></a> 580<a name="line.580"></a> 581 if (s == null)<a name="line.581"></a> 582 return null;<a name="line.582"></a> 583 if (isEmpty(s))<a name="line.583"></a> 584 return Collections.EMPTY_MAP;<a name="line.584"></a> 585<a name="line.585"></a> 586 Map<String,String> m = new LinkedHashMap<>();<a name="line.586"></a> 587<a name="line.587"></a> 588 int<a name="line.588"></a> 589 S1 = 1, // Found start of key, looking for equals.<a name="line.589"></a> 590 S2 = 2; // Found equals, looking for delimiter (or end).<a name="line.590"></a> 591<a name="line.591"></a> 592 int state = S1;<a name="line.592"></a> 593<a name="line.593"></a> 594 char[] sArray = s.toCharArray();<a name="line.594"></a> 595 int x1 = 0, escapeCount = 0;<a name="line.595"></a> 596 String key = null;<a name="line.596"></a> 597 for (int i = 0; i < sArray.length + 1; i++) {<a name="line.597"></a> 598 char c = i == sArray.length ? delim : sArray[i];<a name="line.598"></a> 599 if (c == '\\')<a name="line.599"></a> 600 escapeCount++;<a name="line.600"></a> 601 if (escapeCount % 2 == 0) {<a name="line.601"></a> 602 if (state == S1) {<a name="line.602"></a> 603 if (c == eq) {<a name="line.603"></a> 604 key = s.substring(x1, i);<a name="line.604"></a> 605 if (trim)<a name="line.605"></a> 606 key = trim(key);<a name="line.606"></a> 607 key = unEscapeChars(key, unEscapeChars);<a name="line.607"></a> 608 state = S2;<a name="line.608"></a> 609 x1 = i+1;<a name="line.609"></a> 610 } else if (c == delim) {<a name="line.610"></a> 611 key = s.substring(x1, i);<a name="line.611"></a> 612 if (trim)<a name="line.612"></a> 613 key = trim(key);<a name="line.613"></a> 614 key = unEscapeChars(key, unEscapeChars);<a name="line.614"></a> 615 m.put(key, "");<a name="line.615"></a> 616 state = S1;<a name="line.616"></a> 617 x1 = i+1;<a name="line.617"></a> 618 }<a name="line.618"></a> 619 } else if (state == S2) {<a name="line.619"></a> 620 if (c == delim) {<a name="line.620"></a> 621 String val = s.substring(x1, i);<a name="line.621"></a> 622 if (trim)<a name="line.622"></a> 623 val = trim(val);<a name="line.623"></a> 624 val = unEscapeChars(val, unEscapeChars);<a name="line.624"></a> 625 m.put(key, val);<a name="line.625"></a> 626 key = null;<a name="line.626"></a> 627 x1 = i+1;<a name="line.627"></a> 628 state = S1;<a name="line.628"></a> 629 }<a name="line.629"></a> 630 }<a name="line.630"></a> 631 }<a name="line.631"></a> 632 if (c != '\\') escapeCount = 0;<a name="line.632"></a> 633 }<a name="line.633"></a> 634<a name="line.634"></a> 635 return m;<a name="line.635"></a> 636 }<a name="line.636"></a> 637 <a name="line.637"></a> 638 /**<a name="line.638"></a> 639 * Returns <jk>true</jk> if the specified string contains any of the specified characters.<a name="line.639"></a> 640 * <a name="line.640"></a> 641 * @param s The string to test.<a name="line.641"></a> 642 * @param chars The characters to look for.<a name="line.642"></a> 643 * @return <a name="line.643"></a> 644 * <jk>true</jk> if the specified string contains any of the specified characters.<a name="line.644"></a> 645 * <jk>false</jk> if the string is <jk>null</jk>.<a name="line.645"></a> 646 */<a name="line.646"></a> 647 public static boolean containsAny(String s, char...chars) {<a name="line.647"></a> 648 if (s == null)<a name="line.648"></a> 649 return false;<a name="line.649"></a> 650 for (int i = 0; i < s.length(); i++) {<a name="line.650"></a> 651 char c = s.charAt(i);<a name="line.651"></a> 652 for (char c2 : chars) <a name="line.652"></a> 653 if (c == c2)<a name="line.653"></a> 654 return true;<a name="line.654"></a> 655 }<a name="line.655"></a> 656 return false;<a name="line.656"></a> 657 }<a name="line.657"></a> 658 <a name="line.658"></a> 659 /**<a name="line.659"></a> 660 * Splits a space-delimited string with optionally quoted arguments.<a name="line.660"></a> 661 * <a name="line.661"></a> 662 * <a name="line.662"></a> 663 * Examples:<a name="line.663"></a> 664 * <ul><a name="line.664"></a> 665 * <li><js>"foo"</js> =&gt; <code>["foo"]</code><a name="line.665"></a> 666 * <li><js>" foo "</js> =&gt; <code>["foo"]</code><a name="line.666"></a> 667 * <li><js>"foo bar baz"</js> =&gt; <code>["foo","bar","baz"]</code><a name="line.667"></a> 668 * <li><js>"foo 'bar baz'"</js> =&gt; <code>["foo","bar baz"]</code><a name="line.668"></a> 669 * <li><js>"foo \"bar baz\""</js> =&gt; <code>["foo","bar baz"]</code><a name="line.669"></a> 670 * <li><js>"foo 'bar\'baz'"</js> =&gt; <code>["foo","bar'baz"]</code><a name="line.670"></a> 671 * </ul><a name="line.671"></a> 672 * <a name="line.672"></a> 673 * @param s The input string.<a name="line.673"></a> 674 * @return <a name="line.674"></a> 675 * The results, or <jk>null</jk> if the input was <jk>null</jk>.<a name="line.675"></a> 676 * An empty string results in an empty array.<a name="line.676"></a> 677 */<a name="line.677"></a> 678 public static String[] splitQuoted(String s) {<a name="line.678"></a> 679 char[] unEscapeChars = new char[]{'\\', '\'', '"'};<a name="line.679"></a> 680<a name="line.680"></a> 681 if (s == null)<a name="line.681"></a> 682 return null;<a name="line.682"></a> 683 <a name="line.683"></a> 684 s = s.trim();<a name="line.684"></a> 685 <a name="line.685"></a> 686 if (isEmpty(s))<a name="line.686"></a> 687 return new String[0];<a name="line.687"></a> 688 <a name="line.688"></a> 689 if (! containsAny(s, ' ', '\t', '\'', '"'))<a name="line.689"></a> 690 return new String[]{s};<a name="line.690"></a> 691<a name="line.691"></a> 692 int <a name="line.692"></a> 693 S1 = 1, // Looking for start of token.<a name="line.693"></a> 694 S2 = 2, // Found ', looking for end '<a name="line.694"></a> 695 S3 = 3, // Found ", looking for end "<a name="line.695"></a> 696 S4 = 4; // Found non-whitespace, looking for end whitespace.<a name="line.696"></a> 697 <a name="line.697"></a> 698 int state = S1;<a name="line.698"></a> 699 <a name="line.699"></a> 700 boolean isInEscape = false, needsUnescape = false;<a name="line.700"></a> 701 int mark = 0;<a name="line.701"></a> 702 <a name="line.702"></a> 703 List<String> l = new ArrayList<>();<a name="line.703"></a> 704 for (int i = 0; i < s.length(); i++) {<a name="line.704"></a> 705 char c = s.charAt(i);<a name="line.705"></a> 706 <a name="line.706"></a> 707 if (state == S1) {<a name="line.707"></a> 708 if (c == '\'') {<a name="line.708"></a> 709 state = S2;<a name="line.709"></a> 710 mark = i+1;<a name="line.710"></a> 711 } else if (c == '"') {<a name="line.711"></a> 712 state = S3;<a name="line.712"></a> 713 mark = i+1;<a name="line.713"></a> 714 } else if (c != ' ' && c != '\t') {<a name="line.714"></a> 715 state = S4;<a name="line.715"></a> 716 mark = i;<a name="line.716"></a> 717 }<a name="line.717"></a> 718 } else if (state == S2 || state == S3) {<a name="line.718"></a> 719 if (c == '\\') {<a name="line.719"></a> 720 isInEscape = ! isInEscape;<a name="line.720"></a> 721 needsUnescape = true;<a name="line.721"></a> 722 } else if (! isInEscape) {<a name="line.722"></a> 723 if (c == (state == S2 ? '\'' : '"')) {<a name="line.723"></a> 724 String s2 = s.substring(mark, i);<a name="line.724"></a> 725 if (needsUnescape)<a name="line.725"></a> 726 s2 = unEscapeChars(s2, unEscapeChars, '\\');<a name="line.726"></a> 727 l.add(s2);<a name="line.727"></a> 728 state = S1;<a name="line.728"></a> 729 isInEscape = needsUnescape = false;<a name="line.729"></a> 730 }<a name="line.730"></a> 731 } else {<a name="line.731"></a> 732 isInEscape = false;<a name="line.732"></a> 733 }<a name="line.733"></a> 734 } else if (state == S4) {<a name="line.734"></a> 735 if (c == ' ' || c == '\t') {<a name="line.735"></a> 736 l.add(s.substring(mark, i));<a name="line.736"></a> 737 state = S1;<a name="line.737"></a> 738 }<a name="line.738"></a> 739 }<a name="line.739"></a> 740 }<a name="line.740"></a> 741 if (state == S4)<a name="line.741"></a> 742 l.add(s.substring(mark));<a name="line.742"></a> 743 else if (state == S2 || state == S3)<a name="line.743"></a> 744 throw new RuntimeException("Unmatched string quotes: " + s);<a name="line.744"></a> 745 return l.toArray(new String[l.size()]);<a name="line.745"></a> 746 }<a name="line.746"></a> 747<a name="line.747"></a> 748 /**<a name="line.748"></a> 749 * Returns <jk>true</jk> if specified string is <jk>null</jk> or empty.<a name="line.749"></a> 750 * <a name="line.750"></a> 751 * @param s The string to check.<a name="line.751"></a> 752 * @return <jk>true</jk> if specified string is <jk>null</jk> or empty.<a name="line.752"></a> 753 */<a name="line.753"></a> 754 public static boolean isEmpty(String s) {<a name="line.754"></a> 755 return s == null || s.isEmpty();<a name="line.755"></a> 756 }<a name="line.756"></a> 757<a name="line.757"></a> 758 /**<a name="line.758"></a> 759 * Returns <jk>true</jk> if specified string is <jk>null</jk> or it's {@link #toString()} method returns an empty<a name="line.759"></a> 760 * string.<a name="line.760"></a> 761 * <a name="line.761"></a> 762 * @param s The string to check.<a name="line.762"></a> 763 * @return<a name="line.763"></a> 764 * <jk>true</jk> if specified string is <jk>null</jk> or it's {@link #toString()} method returns an empty string.<a name="line.764"></a> 765 */<a name="line.765"></a> 766 public static boolean isEmpty(Object s) {<a name="line.766"></a> 767 return s == null || s.toString().isEmpty();<a name="line.767"></a> 768 }<a name="line.768"></a> 769<a name="line.769"></a> 770 /**<a name="line.770"></a> 771 * Returns <jk>null</jk> if the specified string is <jk>null</jk> or empty.<a name="line.771"></a> 772 * <a name="line.772"></a> 773 * @param s The string to check.<a name="line.773"></a> 774 * @return <jk>null</jk> if the specified string is <jk>null</jk> or empty, or the same string if not.<a name="line.774"></a> 775 */<a name="line.775"></a> 776 public static String nullIfEmpty(String s) {<a name="line.776"></a> 777 if (s == null || s.isEmpty())<a name="line.777"></a> 778 return null;<a name="line.778"></a> 779 return s;<a name="line.779"></a> 780 }<a name="line.780"></a> 781<a name="line.781"></a> 782 /**<a name="line.782"></a> 783 * Returns an empty string if the specified string is <jk>null</jk>.<a name="line.783"></a> 784 * <a name="line.784"></a> 785 * @param s The string to check.<a name="line.785"></a> 786 * @return An empty string if the specified string is <jk>null</jk>, or the same string otherwise.<a name="line.786"></a> 787 */<a name="line.787"></a> 788 public static String emptyIfNull(String s) {<a name="line.788"></a> 789 if (s == null)<a name="line.789"></a> 790 return "";<a name="line.790"></a> 791 return s;<a name="line.791"></a> 792 }<a name="line.792"></a> 793<a name="line.793"></a> 794 /**<a name="line.794"></a> 795 * Removes escape characters (\) from the specified characters.<a name="line.795"></a> 796 * <a name="line.796"></a> 797 * @param s The string to remove escape characters from.<a name="line.797"></a> 798 * @param toEscape The characters escaped.<a name="line.798"></a> 799 * @return A new string if characters were removed, or the same string if not or if the input was <jk>null</jk>.<a name="line.799"></a> 800 */<a name="line.800"></a> 801 public static String unEscapeChars(String s, char[] toEscape) {<a name="line.801"></a> 802 return unEscapeChars(s, toEscape, '\\');<a name="line.802"></a> 803 }<a name="line.803"></a> 804<a name="line.804"></a> 805 /**<a name="line.805"></a> 806 * Removes escape characters (specified by escapeChar) from the specified characters.<a name="line.806"></a> 807 * <a name="line.807"></a> 808 * @param s The string to remove escape characters from.<a name="line.808"></a> 809 * @param toEscape The characters escaped.<a name="line.809"></a> 810 * @param escapeChar The escape character.<a name="line.810"></a> 811 * @return A new string if characters were removed, or the same string if not or if the input was <jk>null</jk>.<a name="line.811"></a> 812 */<a name="line.812"></a> 813 public static String unEscapeChars(String s, char[] toEscape, char escapeChar) {<a name="line.813"></a> 814 if (s == null) return null;<a name="line.814"></a> 815 if (s.length() == 0 || toEscape == null || toEscape.length == 0 || escapeChar == 0) return s;<a name="line.815"></a> 816 StringBuffer sb = new StringBuffer(s.length());<a name="line.816"></a> 817 char[] sArray = s.toCharArray();<a name="line.817"></a> 818 for (int i = 0; i < sArray.length; i++) {<a name="line.818"></a> 819 char c = sArray[i];<a name="line.819"></a> 820<a name="line.820"></a> 821 if (c == escapeChar) {<a name="line.821"></a> 822 if (i+1 != sArray.length) {<a name="line.822"></a> 823 char c2 = sArray[i+1];<a name="line.823"></a> 824 boolean isOneOf = false;<a name="line.824"></a> 825 for (int j = 0; j < toEscape.length && ! isOneOf; j++)<a name="line.825"></a> 826 isOneOf = (c2 == toEscape[j]);<a name="line.826"></a> 827 if (isOneOf) {<a name="line.827"></a> 828 i++;<a name="line.828"></a> 829 } else if (c2 == escapeChar) {<a name="line.829"></a> 830 sb.append(escapeChar);<a name="line.830"></a> 831 i++;<a name="line.831"></a> 832 }<a name="line.832"></a> 833 }<a name="line.833"></a> 834 }<a name="line.834"></a> 835 sb.append(sArray[i]);<a name="line.835"></a> 836 }<a name="line.836"></a> 837 return sb.toString();<a name="line.837"></a> 838 }<a name="line.838"></a> 839<a name="line.839"></a> 840 /**<a name="line.840"></a> 841 * Debug method for rendering non-ASCII character sequences.<a name="line.841"></a> 842 * <a name="line.842"></a> 843 * @param s The string to decode.<a name="line.843"></a> 844 * @return A string with non-ASCII characters converted to <js>"[hex]"</js> sequences.<a name="line.844"></a> 845 */<a name="line.845"></a> 846 public static String decodeHex(String s) {<a name="line.846"></a> 847 if (s == null)<a name="line.847"></a> 848 return null;<a name="line.848"></a> 849 StringBuilder sb = new StringBuilder();<a name="line.849"></a> 850 for (char c : s.toCharArray()) {<a name="line.850"></a> 851 if (c < ' ' || c > '~')<a name="line.851"></a> 852 sb.append("["+Integer.toHexString(c)+"]");<a name="line.852"></a> 853 else<a name="line.853"></a> 854 sb.append(c);<a name="line.854"></a> 855 }<a name="line.855"></a> 856 return sb.toString();<a name="line.856"></a> 857 }<a name="line.857"></a> 858<a name="line.858"></a> 859 /**<a name="line.859"></a> 860 * An efficient method for checking if a string starts with a character.<a name="line.860"></a> 861 * <a name="line.861"></a> 862 * @param s The string to check. Can be <jk>null</jk>.<a name="line.862"></a> 863 * @param c The character to check for.<a name="line.863"></a> 864 * @return <jk>true</jk> if the specified string is not <jk>null</jk> and starts with the specified character.<a name="line.864"></a> 865 */<a name="line.865"></a> 866 public static boolean startsWith(String s, char c) {<a name="line.866"></a> 867 if (s != null) {<a name="line.867"></a> 868 int i = s.length();<a name="line.868"></a> 869 if (i > 0)<a name="line.869"></a> 870 return s.charAt(0) == c;<a name="line.870"></a> 871 }<a name="line.871"></a> 872 return false;<a name="line.872"></a> 873 }<a name="line.873"></a> 874<a name="line.874"></a> 875 /**<a name="line.875"></a> 876 * An efficient method for checking if a string ends with a character.<a name="line.876"></a> 877 * <a name="line.877"></a> 878 * @param s The string to check. Can be <jk>null</jk>.<a name="line.878"></a> 879 * @param c The character to check for.<a name="line.879"></a> 880 * @return <jk>true</jk> if the specified string is not <jk>null</jk> and ends with the specified character.<a name="line.880"></a> 881 */<a name="line.881"></a> 882 public static boolean endsWith(String s, char c) {<a name="line.882"></a> 883 if (s != null) {<a name="line.883"></a> 884 int i = s.length();<a name="line.884"></a> 885 if (i > 0)<a name="line.885"></a> 886 return s.charAt(i-1) == c;<a name="line.886"></a> 887 }<a name="line.887"></a> 888 return false;<a name="line.888"></a> 889 }<a name="line.889"></a> 890<a name="line.890"></a> 891 /**<a name="line.891"></a> 892 * Same as {@link #endsWith(String, char)} except check for multiple characters.<a name="line.892"></a> 893 * <a name="line.893"></a> 894 * @param s The string to check. Can be <jk>null</jk>.<a name="line.894"></a> 895 * @param c The characters to check for.<a name="line.895"></a> 896 * @return <jk>true</jk> if the specified string is not <jk>null</jk> and ends with the specified character.<a name="line.896"></a> 897 */<a name="line.897"></a> 898 public static boolean endsWith(String s, char...c) {<a name="line.898"></a> 899 if (s != null) {<a name="line.899"></a> 900 int i = s.length();<a name="line.900"></a> 901 if (i > 0) {<a name="line.901"></a> 902 char c2 = s.charAt(i-1);<a name="line.902"></a> 903 for (char cc : c)<a name="line.903"></a> 904 if (c2 == cc)<a name="line.904"></a> 905 return true;<a name="line.905"></a> 906 }<a name="line.906"></a> 907 }<a name="line.907"></a> 908 return false;<a name="line.908"></a> 909 }<a name="line.909"></a> 910<a name="line.910"></a> 911 /**<a name="line.911"></a> 912 * Converts the specified number into a 4 hexadecimal characters.<a name="line.912"></a> 913 * <a name="line.913"></a> 914 * @param num The number to convert to hex.<a name="line.914"></a> 915 * @return A <code><jk>char</jk>[4]</code> containing the specified characters.<a name="line.915"></a> 916 */<a name="line.916"></a> 917 public static final char[] toHex(int num) {<a name="line.917"></a> 918 char[] n = new char[4];<a name="line.918"></a> 919 int a = num%16;<a name="line.919"></a> 920 n[3] = (char)(a > 9 ? 'A'+a-10 : '0'+a);<a name="line.920"></a> 921 int base = 16;<a name="line.921"></a> 922 for (int i = 1; i < 4; i++) {<a name="line.922"></a> 923 a = (num/base)%16;<a name="line.923"></a> 924 base <<= 4;<a name="line.924"></a> 925 n[3-i] = (char)(a > 9 ? 'A'+a-10 : '0'+a);<a name="line.925"></a> 926 }<a name="line.926"></a> 927 return n;<a name="line.927"></a> 928 }<a name="line.928"></a> 929<a name="line.929"></a> 930 /**<a name="line.930"></a> 931 * Tests two strings for equality, but gracefully handles nulls.<a name="line.931"></a> 932 * <a name="line.932"></a> 933 * @param s1 String 1.<a name="line.933"></a> 934 * @param s2 String 2.<a name="line.934"></a> 935 * @return <jk>true</jk> if the strings are equal.<a name="line.935"></a> 936 */<a name="line.936"></a> 937 public static boolean isEquals(String s1, String s2) {<a name="line.937"></a> 938 if (s1 == null)<a name="line.938"></a> 939 return s2 == null;<a name="line.939"></a> 940 if (s2 == null)<a name="line.940"></a> 941 return false;<a name="line.941"></a> 942 return s1.equals(s2);<a name="line.942"></a> 943 }<a name="line.943"></a> 944<a name="line.944"></a> 945 /**<a name="line.945"></a> 946 * Shortcut for calling <code>base64Encode(in.getBytes(<js>"UTF-8"</js>))</code><a name="line.946"></a> 947 * <a name="line.947"></a> 948 * @param in The input string to convert.<a name="line.948"></a> 949 * @return The string converted to BASE-64 encoding.<a name="line.949"></a> 950 */<a name="line.950"></a> 951 public static String base64EncodeToString(String in) {<a name="line.951"></a> 952 if (in == null)<a name="line.952"></a> 953 return null;<a name="line.953"></a> 954 return base64Encode(in.getBytes(IOUtils.UTF8));<a name="line.954"></a> 955 }<a name="line.955"></a> 956<a name="line.956"></a> 957 /**<a name="line.957"></a> 958 * BASE64-encodes the specified byte array.<a name="line.958"></a> 959 * <a name="line.959"></a> 960 * @param in The input byte array to convert.<a name="line.960"></a> 961 * @return The byte array converted to a BASE-64 encoded string.<a name="line.961"></a> 962 */<a name="line.962"></a> 963 public static String base64Encode(byte[] in) {<a name="line.963"></a> 964 int outLength = (in.length * 4 + 2) / 3; // Output length without padding<a name="line.964"></a> 965 char[] out = new char[((in.length + 2) / 3) * 4]; // Length includes padding.<a name="line.965"></a> 966 int iIn = 0;<a name="line.966"></a> 967 int iOut = 0;<a name="line.967"></a> 968 while (iIn < in.length) {<a name="line.968"></a> 969 int i0 = in[iIn++] & 0xff;<a name="line.969"></a> 970 int i1 = iIn < in.length ? in[iIn++] & 0xff : 0;<a name="line.970"></a> 971 int i2 = iIn < in.length ? in[iIn++] & 0xff : 0;<a name="line.971"></a> 972 int o0 = i0 >>> 2;<a name="line.972"></a> 973 int o1 = ((i0 & 3) << 4) | (i1 >>> 4);<a name="line.973"></a> 974 int o2 = ((i1 & 0xf) << 2) | (i2 >>> 6);<a name="line.974"></a> 975 int o3 = i2 & 0x3F;<a name="line.975"></a> 976 out[iOut++] = base64m1[o0];<a name="line.976"></a> 977 out[iOut++] = base64m1[o1];<a name="line.977"></a> 978 out[iOut] = iOut < outLength ? base64m1[o2] : '=';<a name="line.978"></a> 979 iOut++;<a name="line.979"></a> 980 out[iOut] = iOut < outLength ? base64m1[o3] : '=';<a name="line.980"></a> 981 iOut++;<a name="line.981"></a> 982 }<a name="line.982"></a> 983 return new String(out);<a name="line.983"></a> 984 }<a name="line.984"></a> 985<a name="line.985"></a> 986 /**<a name="line.986"></a> 987 * Shortcut for calling <code>base64Decode(String)</code> and converting the result to a UTF-8 encoded string.<a name="line.987"></a> 988 * <a name="line.988"></a> 989 * @param in The BASE-64 encoded string to decode.<a name="line.989"></a> 990 * @return The decoded string.<a name="line.990"></a> 991 */<a name="line.991"></a> 992 public static String base64DecodeToString(String in) {<a name="line.992"></a> 993 byte[] b = base64Decode(in);<a name="line.993"></a> 994 if (b == null)<a name="line.994"></a> 995 return null;<a name="line.995"></a> 996 return new String(b, IOUtils.UTF8);<a name="line.996"></a> 997 }<a name="line.997"></a> 998<a name="line.998"></a> 999 /**<a name="line.999"></a> 1000 * BASE64-decodes the specified string.<a name="line.1000"></a> 1001 * <a name="line.1001"></a> 1002 * @param in The BASE-64 encoded string.<a name="line.1002"></a> 1003 * @return The decoded byte array.<a name="line.1003"></a> 1004 */<a name="line.1004"></a> 1005 public static byte[] base64Decode(String in) {<a name="line.1005"></a> 1006 if (in == null)<a name="line.1006"></a> 1007 return null;<a name="line.1007"></a> 1008<a name="line.1008"></a> 1009 byte bIn[] = in.getBytes(IOUtils.UTF8);<a name="line.1009"></a> 1010<a name="line.1010"></a> 1011 if (bIn.length % 4 != 0)<a name="line.1011"></a> 1012 illegalArg("Invalid BASE64 string length. Must be multiple of 4.");<a name="line.1012"></a> 1013<a name="line.1013"></a> 1014 // Strip out any trailing '=' filler characters.<a name="line.1014"></a> 1015 int inLength = bIn.length;<a name="line.1015"></a> 1016 while (inLength > 0 && bIn[inLength - 1] == '=')<a name="line.1016"></a> 1017 inLength--;<a name="line.1017"></a> 1018<a name="line.1018"></a> 1019 int outLength = (inLength * 3) / 4;<a name="line.1019"></a> 1020 byte[] out = new byte[outLength];<a name="line.1020"></a> 1021 int iIn = 0;<a name="line.1021"></a> 1022 int iOut = 0;<a name="line.1022"></a> 1023 while (iIn < inLength) {<a name="line.1023"></a> 1024 int i0 = bIn[iIn++];<a name="line.1024"></a> 1025 int i1 = bIn[iIn++];<a name="line.1025"></a> 1026 int i2 = iIn < inLength ? bIn[iIn++] : 'A';<a name="line.1026"></a> 1027 int i3 = iIn < inLength ? bIn[iIn++] : 'A';<a name="line.1027"></a> 1028 int b0 = base64m2[i0];<a name="line.1028"></a> 1029 int b1 = base64m2[i1];<a name="line.1029"></a> 1030 int b2 = base64m2[i2];<a name="line.1030"></a> 1031 int b3 = base64m2[i3];<a name="line.1031"></a> 1032 int o0 = (b0 << 2) | (b1 >>> 4);<a name="line.1032"></a> 1033 int o1 = ((b1 & 0xf) << 4) | (b2 >>> 2);<a name="line.1033"></a> 1034 int o2 = ((b2 & 3) << 6) | b3;<a name="line.1034"></a> 1035 out[iOut++] = (byte)o0;<a name="line.1035"></a> 1036 if (iOut < outLength)<a name="line.1036"></a> 1037 out[iOut++] = (byte)o1;<a name="line.1037"></a> 1038 if (iOut < outLength)<a name="line.1038"></a> 1039 out[iOut++] = (byte)o2;<a name="line.1039"></a> 1040 }<a name="line.1040"></a> 1041 return out;<a name="line.1041"></a> 1042 }<a name="line.1042"></a> 1043<a name="line.1043"></a> 1044 /**<a name="line.1044"></a> 1045 * Generated a random UUID with the specified number of characters.<a name="line.1045"></a> 1046 * <a name="line.1046"></a> 1047 * <a name="line.1047"></a> 1048 * Characters are composed of lower-case ASCII letters and numbers only.<a name="line.1048"></a> 1049 * <a name="line.1049"></a> 1050 * <a name="line.1050"></a> 1051 * This method conforms to the restrictions for hostnames as specified in <a class="doclink" href="https://tools.ietf.org/html/rfc952">RFC 952</a><a name="line.1051"></a> 1052 * Since each character has 36 possible values, the square approximation formula for the number of generated IDs<a name="line.1052"></a> 1053 * that would produce a 50% chance of collision is:<a name="line.1053"></a> 1054 * <code>sqrt(36^N)</code>.<a name="line.1054"></a> 1055 * Dividing this number by 10 gives you an approximation of the number of generated IDs needed to produce a<a name="line.1055"></a> 1056 * &lt;1% chance of collision.<a name="line.1056"></a> 1057 * <a name="line.1057"></a> 1058 * <a name="line.1058"></a> 1059 * For example, given 5 characters, the number of generated IDs need to produce a &lt;1% chance of collision would<a name="line.1059"></a> 1060 * be:<a name="line.1060"></a> 1061 * <code>sqrt(36^5)/10=777</code><a name="line.1061"></a> 1062 * <a name="line.1062"></a> 1063 * @param numchars The number of characters in the generated UUID.<a name="line.1063"></a> 1064 * @return A new random UUID.<a name="line.1064"></a> 1065 */<a name="line.1065"></a> 1066 public static String generateUUID(int numchars) {<a name="line.1066"></a> 1067 Random r = new Random();<a name="line.1067"></a> 1068 StringBuilder sb = new StringBuilder(numchars);<a name="line.1068"></a> 1069 for (int i = 0; i < numchars; i++) {<a name="line.1069"></a> 1070 int c = r.nextInt(36) + 97;<a name="line.1070"></a> 1071 if (c > 'z')<a name="line.1071"></a> 1072 c -= ('z'-'0'+1);<a name="line.1072"></a> 1073 sb.append((char)c);<a name="line.1073"></a> 1074 }<a name="line.1074"></a> 1075 return sb.toString();<a name="line.1075"></a> 1076 }<a name="line.1076"></a> 1077<a name="line.1077"></a> 1078 /**<a name="line.1078"></a> 1079 * Same as {@link String#trim()} but prevents <code>NullPointerExceptions</code>.<a name="line.1079"></a> 1080 * <a name="line.1080"></a> 1081 * @param s The string to trim.<a name="line.1081"></a> 1082 * @return The trimmed string, or <jk>null</jk> if the string was <jk>null</jk>.<a name="line.1082"></a> 1083 */<a name="line.1083"></a> 1084 public static String trim(String s) {<a name="line.1084"></a> 1085 if (s == null)<a name="line.1085"></a> 1086 return null;<a name="line.1086"></a> 1087 return s.trim();<a name="line.1087"></a> 1088 }<a name="line.1088"></a> 1089<a name="line.1089"></a> 1090 /**<a name="line.1090"></a> 1091 * Parses an ISO8601 string into a date.<a name="line.1091"></a> 1092 * <a name="line.1092"></a> 1093 * @param date The date string.<a name="line.1093"></a> 1094 * @return The parsed date.<a name="line.1094"></a> 1095 * @throws IllegalArgumentException<a name="line.1095"></a> 1096 */<a name="line.1096"></a> 1097 public static Date parseISO8601Date(String date) throws IllegalArgumentException {<a name="line.1097"></a> 1098 if (isEmpty(date))<a name="line.1098"></a> 1099 return null;<a name="line.1099"></a> 1100 date = date.trim().replace(' ', 'T'); // Convert to 'standard' ISO8601<a name="line.1100"></a> 1101 if (date.indexOf(',') != -1) // Trim milliseconds<a name="line.1101"></a> 1102 date = date.substring(0, date.indexOf(','));<a name="line.1102"></a> 1103 if (date.matches("\\d{4}"))<a name="line.1103"></a> 1104 date += "-01-01T00:00:00";<a name="line.1104"></a> 1105 else if (date.matches("\\d{4}\\-\\d{2}"))<a name="line.1105"></a> 1106 date += "-01T00:00:00";<a name="line.1106"></a> 1107 else if (date.matches("\\d{4}\\-\\d{2}\\-\\d{2}"))<a name="line.1107"></a> 1108 date += "T00:00:00";<a name="line.1108"></a> 1109 else if (date.matches("\\d{4}\\-\\d{2}\\-\\d{2}T\\d{2}"))<a name="line.1109"></a> 1110 date += ":00:00";<a name="line.1110"></a> 1111 else if (date.matches("\\d{4}\\-\\d{2}\\-\\d{2}T\\d{2}\\:\\d{2}"))<a name="line.1111"></a> 1112 date += ":00";<a name="line.1112"></a> 1113 return DatatypeConverter.parseDateTime(date).getTime();<a name="line.1113"></a> 1114 }<a name="line.1114"></a> 1115<a name="line.1115"></a> 1116 /**<a name="line.1116"></a> 1117 * Simple utility for replacing variables of the form <js>"{key}"</js> with values in the specified map.<a name="line.1117"></a> 1118 * <a name="line.1118"></a> 1119 * <a name="line.1119"></a> 1120 * Nested variables are supported in both the input string and map values.<a name="line.1120"></a> 1121 * <a name="line.1121"></a> 1122 * <a name="line.1122"></a> 1123 * If the map does not contain the specified value, the variable is not replaced.<a name="line.1123"></a> 1124 * <a name="line.1124"></a> 1125 * <a name="line.1125"></a> 1126 * <jk>null</jk> values in the map are treated as blank strings.<a name="line.1126"></a> 1127 * <a name="line.1127"></a> 1128 * @param s The string containing variables to replace.<a name="line.1128"></a> 1129 * @param m The map containing the variable values.<a name="line.1129"></a> 1130 * @return The new string with variables replaced, or the original string if it didn't have variables in it.<a name="line.1130"></a> 1131 */<a name="line.1131"></a> 1132 public static String replaceVars(String s, Map<String,Object> m) {<a name="line.1132"></a> 1133<a name="line.1133"></a> 1134 if (s == null)<a name="line.1134"></a> 1135 return null;<a name="line.1135"></a> 1136<a name="line.1136"></a> 1137 if (s.indexOf('{') == -1)<a name="line.1137"></a> 1138 return s;<a name="line.1138"></a> 1139<a name="line.1139"></a> 1140 int S1 = 1; // Not in variable, looking for {<a name="line.1140"></a> 1141 int S2 = 2; // Found {, Looking for }<a name="line.1141"></a> 1142<a name="line.1142"></a> 1143 int state = S1;<a name="line.1143"></a> 1144 boolean hasInternalVar = false;<a name="line.1144"></a> 1145 int x = 0;<a name="line.1145"></a> 1146 int depth = 0;<a name="line.1146"></a> 1147 int length = s.length();<a name="line.1147"></a> 1148 StringBuilder out = new StringBuilder();<a name="line.1148"></a> 1149 for (int i = 0; i < length; i++) {<a name="line.1149"></a> 1150 char c = s.charAt(i);<a name="line.1150"></a> 1151 if (state == S1) {<a name="line.1151"></a> 1152 if (c == '{') {<a name="line.1152"></a> 1153 state = S2;<a name="line.1153"></a> 1154 x = i;<a name="line.1154"></a> 1155 } else {<a name="line.1155"></a> 1156 out.append(c);<a name="line.1156"></a> 1157 }<a name="line.1157"></a> 1158 } else /* state == S2 */ {<a name="line.1158"></a> 1159 if (c == '{') {<a name="line.1159"></a> 1160 depth++;<a name="line.1160"></a> 1161 hasInternalVar = true;<a name="line.1161"></a> 1162 } else if (c == '}') {<a name="line.1162"></a> 1163 if (depth > 0) {<a name="line.1163"></a> 1164 depth--;<a name="line.1164"></a> 1165 } else {<a name="line.1165"></a> 1166 String key = s.substring(x+1, i);<a name="line.1166"></a> 1167 key = (hasInternalVar ? replaceVars(key, m) : key);<a name="line.1167"></a> 1168 hasInternalVar = false;<a name="line.1168"></a> 1169 if (! m.containsKey(key))<a name="line.1169"></a> 1170 out.append('{').append(key).append('}');<a name="line.1170"></a> 1171 else {<a name="line.1171"></a> 1172 Object val = m.get(key);<a name="line.1172"></a> 1173 if (val == null)<a name="line.1173"></a> 1174 val = "";<a name="line.1174"></a> 1175 String v = val.toString();<a name="line.1175"></a> 1176 // If the replacement also contains variables, replace them now.<a name="line.1176"></a> 1177 if (v.indexOf('{') != -1)<a name="line.1177"></a> 1178 v = replaceVars(v, m);<a name="line.1178"></a> 1179 out.append(v);<a name="line.1179"></a> 1180 }<a name="line.1180"></a> 1181 state = 1;<a name="line.1181"></a> 1182 }<a name="line.1182"></a> 1183 }<a name="line.1183"></a> 1184 }<a name="line.1184"></a> 1185 }<a name="line.1185"></a> 1186 return out.toString();<a name="line.1186"></a> 1187 }<a name="line.1187"></a> 1188<a name="line.1188"></a> 1189 /**<a name="line.1189"></a> 1190 * Returns <jk>true</jk> if the specified path string is prefixed with the specified prefix.<a name="line.1190"></a> 1191 * <a name="line.1191"></a> 1192 * <h5 class='section'>Example:</h5><a name="line.1192"></a> 1193 * <a name="line.1193"></a> 1194 * pathStartsWith(<js>"foo"</js>, <js>"foo"</js>); <jc>// true</jc><a name="line.1194"></a> 1195 * pathStartsWith(<js>"foo/bar"</js>, <js>"foo"</js>); <jc>// true</jc><a name="line.1195"></a> 1196 * pathStartsWith(<js>"foo2"</js>, <js>"foo"</js>); <jc>// false</jc><a name="line.1196"></a> 1197 * pathStartsWith(<js>"foo2"</js>, <js>""</js>); <jc>// false</jc><a name="line.1197"></a> 1198 * <a name="line.1198"></a> 1199 * <a name="line.1199"></a> 1200 * @param path The path to check.<a name="line.1200"></a> 1201 * @param pathPrefix The prefix.<a name="line.1201"></a> 1202 * @return <jk>true</jk> if the specified path string is prefixed with the specified prefix.<a name="line.1202"></a> 1203 */<a name="line.1203"></a> 1204 public static boolean pathStartsWith(String path, String pathPrefix) {<a name="line.1204"></a> 1205 if (path == null || pathPrefix == null)<a name="line.1205"></a> 1206 return false;<a name="line.1206"></a> 1207 if (path.startsWith(pathPrefix))<a name="line.1207"></a> 1208 return path.length() == pathPrefix.length() || path.charAt(pathPrefix.length()) == '/';<a name="line.1208"></a> 1209 return false;<a name="line.1209"></a> 1210 }<a name="line.1210"></a> 1211<a name="line.1211"></a> 1212 /**<a name="line.1212"></a> 1213 * Same as {@link #pathStartsWith(String, String)} but returns <jk>true</jk> if at least one prefix matches.<a name="line.1213"></a> 1214 * <a name="line.1214"></a> 1215 * @param path The path to check.<a name="line.1215"></a> 1216 * @param pathPrefixes The prefixes.<a name="line.1216"></a> 1217 * @return <jk>true</jk> if the specified path string is prefixed with any of the specified prefixes.<a name="line.1217"></a> 1218 */<a name="line.1218"></a> 1219 public static boolean pathStartsWith(String path, String[] pathPrefixes) {<a name="line.1219"></a> 1220 for (String p : pathPrefixes)<a name="line.1220"></a> 1221 if (pathStartsWith(path, p))<a name="line.1221"></a> 1222 return true;<a name="line.1222"></a> 1223 return false;<a name="line.1223"></a> 1224 }<a name="line.1224"></a> 1225<a name="line.1225"></a> 1226 /**<a name="line.1226"></a> 1227 * Replaces <js>"\\uXXXX"</js> character sequences with their unicode characters.<a name="line.1227"></a> 1228 * <a name="line.1228"></a> 1229 * @param s The string to replace unicode sequences in.<a name="line.1229"></a> 1230 * @return A string with unicode sequences replaced.<a name="line.1230"></a> 1231 */<a name="line.1231"></a> 1232 public static String replaceUnicodeSequences(String s) {<a name="line.1232"></a> 1233 if (s.indexOf('\\') == -1)<a name="line.1233"></a> 1234 return s;<a name="line.1234"></a> 1235 Pattern p = Pattern.compile("\\\\u(\\p{XDigit}{4})");<a name="line.1235"></a> 1236 Matcher m = p.matcher(s);<a name="line.1236"></a> 1237 StringBuffer sb = new StringBuffer(s.length());<a name="line.1237"></a> 1238 while (m.find()) {<a name="line.1238"></a> 1239 String ch = String.valueOf((char) Integer.parseInt(m.group(1), 16));<a name="line.1239"></a> 1240 m.appendReplacement(sb, Matcher.quoteReplacement(ch));<a name="line.1240"></a> 1241 }<a name="line.1241"></a> 1242 m.appendTail(sb);<a name="line.1242"></a> 1243 return sb.toString();<a name="line.1243"></a> 1244 }<a name="line.1244"></a> 1245<a name="line.1245"></a> 1246 /**<a name="line.1246"></a> 1247 * Creates an escaped-unicode sequence (e.g. <js>"\\u1234"</js>) for the specified character.<a name="line.1247"></a> 1248 * <a name="line.1248"></a> 1249 * @param c The character to create a sequence for.<a name="line.1249"></a> 1250 * @return An escaped-unicode sequence.<a name="line.1250"></a> 1251 */<a name="line.1251"></a> 1252 public static String unicodeSequence(char c) {<a name="line.1252"></a> 1253 StringBuilder sb = new StringBuilder(6);<a name="line.1253"></a> 1254 sb.append('\\').append('u');<a name="line.1254"></a> 1255 for (char cc : toHex(c))<a name="line.1255"></a> 1256 sb.append(cc);<a name="line.1256"></a> 1257 return sb.toString();<a name="line.1257"></a> 1258 }<a name="line.1258"></a> 1259 <a name="line.1259"></a> 1260 /**<a name="line.1260"></a> 1261 * Returns the specified field in a delimited string without splitting the string.<a name="line.1261"></a> 1262 * <a name="line.1262"></a> 1263 * <a name="line.1263"></a> 1264 * Equivalent to the following:<a name="line.1264"></a> 1265 * <a name="line.1265"></a> 1266 * String in = <js>"0,1,2"</js>;<a name="line.1266"></a> 1267 * String[] parts = in.split(<js>","</js>);<a name="line.1267"></a> 1268 * String p1 = (parts.<jk>length</jk> > 1 ? parts[1] : <js>""</js>);<a name="line.1268"></a> 1269 * <a name="line.1269"></a> 1270 * <a name="line.1270"></a> 1271 * @param fieldNum The field number. Zero-indexed.<a name="line.1271"></a> 1272 * @param s The input string.<a name="line.1272"></a> 1273 * @param delim The delimiter character.<a name="line.1273"></a> 1274 * @return The field entry in the string, or a blank string if it doesn't exist or the string is null.<a name="line.1274"></a> 1275 */<a name="line.1275"></a> 1276 public static String getField(int fieldNum, String s, char delim) {<a name="line.1276"></a> 1277 return getField(fieldNum, s, delim, "");<a name="line.1277"></a> 1278 }<a name="line.1278"></a> 1279<a name="line.1279"></a> 1280 /**<a name="line.1280"></a> 1281 * Same as {@link #getField(int, String, char)} except allows you to specify the default value.<a name="line.1281"></a> 1282 * <a name="line.1282"></a> 1283 * @param fieldNum The field number. Zero-indexed.<a name="line.1283"></a> 1284 * @param s The input string.<a name="line.1284"></a> 1285 * @param delim The delimiter character.<a name="line.1285"></a> 1286 * @param def The default value if the field does not exist.<a name="line.1286"></a> 1287 * @return The field entry in the string, or the default value if it doesn't exist or the string is null.<a name="line.1287"></a> 1288 */<a name="line.1288"></a> 1289 public static String getField(int fieldNum, String s, char delim, String def) {<a name="line.1289"></a> 1290 if (s == null || fieldNum < 0)<a name="line.1290"></a> 1291 return def;<a name="line.1291"></a> 1292 int start = 0;<a name="line.1292"></a> 1293 for (int i = 0; i < s.length(); i++) {<a name="line.1293"></a> 1294 char c = s.charAt(i);<a name="line.1294"></a> 1295 if (c == delim) {<a name="line.1295"></a> 1296 fieldNum--;<a name="line.1296"></a> 1297 if (fieldNum == 0)<a name="line.1297"></a> 1298 start = i+1;<a name="line.1298"></a> 1299 }<a name="line.1299"></a> 1300 if (fieldNum < 0)<a name="line.1300"></a> 1301 return s.substring(start, i);<a name="line.1301"></a> 1302 }<a name="line.1302"></a> 1303 if (start == 0)<a name="line.1303"></a> 1304 return def;<a name="line.1304"></a> 1305 return s.substring(start);<a name="line.1305"></a> 1306 }<a name="line.1306"></a> 1307<a name="line.1307"></a> 1308 /**<a name="line.1308"></a> 1309 * Calls {@link #toString()} on the specified object if it's not null.<a name="line.1309"></a> 1310 * <a name="line.1310"></a> 1311 * @param o The object to convert to a string.<a name="line.1311"></a> 1312 * @return The object converted to a string, or <jk>null</jk> if the object was null.<a name="line.1312"></a> 1313 */<a name="line.1313"></a> 1314 public static String asString(Object o) {<a name="line.1314"></a> 1315 return (o == null ? null : o.toString());<a name="line.1315"></a> 1316 }<a name="line.1316"></a> 1317 <a name="line.1317"></a> 1318 /**<a name="line.1318"></a> 1319 * Converts an array of objects to an array of strings.<a name="line.1319"></a> 1320 * <a name="line.1320"></a> 1321 * @param o The array of objects to convert to strings.<a name="line.1321"></a> 1322 * @return A new array of objects converted to strings.<a name="line.1322"></a> 1323 */<a name="line.1323"></a> 1324 public static String[] asStrings(Object...o) {<a name="line.1324"></a> 1325 if (o == null)<a name="line.1325"></a> 1326 return null;<a name="line.1326"></a> 1327 if (o instanceof String[])<a name="line.1327"></a> 1328 return (String[])o;<a name="line.1328"></a> 1329 String[] s = new String[o.length];<a name="line.1329"></a> 1330 for (int i = 0; i < o.length; i++)<a name="line.1330"></a> 1331 s[i] = asString(o[i]);<a name="line.1331"></a> 1332 return s;<a name="line.1332"></a> 1333 }<a name="line.1333"></a> 1334<a name="line.1334"></a> 1335 /**<a name="line.1335"></a> 1336 * Converts a hexadecimal byte stream (e.g. "34A5BC") into a UTF-8 encoded string.<a name="line.1336"></a> 1337 * <a name="line.1337"></a> 1338 * @param hex The hexadecimal string.<a name="line.1338"></a> 1339 * @return The UTF-8 string.<a name="line.1339"></a> 1340 */<a name="line.1340"></a> 1341 public static String fromHexToUTF8(String hex) {<a name="line.1341"></a> 1342 ByteBuffer buff = ByteBuffer.allocate(hex.length()/2);<a name="line.1342"></a> 1343 for (int i = 0; i < hex.length(); i+=2)<a name="line.1343"></a> 1344 buff.put((byte)Integer.parseInt(hex.substring(i, i+2), 16));<a name="line.1344"></a> 1345 buff.rewind();<a name="line.1345"></a> 1346 Charset cs = Charset.forName("UTF-8");<a name="line.1346"></a> 1347 return cs.decode(buff).toString();<a name="line.1347"></a> 1348 }<a name="line.1348"></a> 1349<a name="line.1349"></a> 1350 /**<a name="line.1350"></a> 1351 * Converts a space-deliminted hexadecimal byte stream (e.g. "34 A5 BC") into a UTF-8 encoded string.<a name="line.1351"></a> 1352 * <a name="line.1352"></a> 1353 * @param hex The hexadecimal string.<a name="line.1353"></a> 1354 * @return The UTF-8 string.<a name="line.1354"></a> 1355 */<a name="line.1355"></a> 1356 public static String fromSpacedHexToUTF8(String hex) {<a name="line.1356"></a> 1357 ByteBuffer buff = ByteBuffer.allocate((hex.length()+1)/3);<a name="line.1357"></a> 1358 for (int i = 0; i < hex.length(); i+=3)<a name="line.1358"></a> 1359 buff.put((byte)Integer.parseInt(hex.substring(i, i+2), 16));<a name="line.1359"></a> 1360 buff.rewind();<a name="line.1360"></a> 1361 Charset cs = Charset.forName("UTF-8");<a name="line.1361"></a> 1362 return cs.decode(buff).toString();<a name="line.1362"></a> 1363 }<a name="line.1363"></a> 1364<a name="line.1364"></a> 1365 private static final char[] HEX = "0123456789ABCDEF".toCharArray();<a name="line.1365"></a> 1366<a name="line.1366"></a> 1367 /**<a name="line.1367"></a> 1368 * Converts a byte array into a simple hexadecimal character string.<a name="line.1368"></a> 1369 * <a name="line.1369"></a> 1370 * @param bytes The bytes to convert to hexadecimal.<a name="line.1370"></a> 1371 * @return A new string consisting of hexadecimal characters.<a name="line.1371"></a> 1372 */<a name="line.1372"></a> 1373 public static String toHex(byte[] bytes) {<a name="line.1373"></a> 1374 StringBuilder sb = new StringBuilder(bytes.length * 2);<a name="line.1374"></a> 1375 for (int j = 0; j < bytes.length; j++) {<a name="line.1375"></a> 1376 int v = bytes[j] & 0xFF;<a name="line.1376"></a> 1377 sb.append(HEX[v >>> 4]).append(HEX[v & 0x0F]);<a name="line.1377"></a> 1378 }<a name="line.1378"></a> 1379 return sb.toString();<a name="line.1379"></a> 1380 }<a name="line.1380"></a> 1381<a name="line.1381"></a> 1382 /**<a name="line.1382"></a> 1383 * Same as {@link #toHex(byte[])} but puts spaces between the byte strings.<a name="line.1383"></a> 1384 * <a name="line.1384"></a> 1385 * @param bytes The bytes to convert to hexadecimal.<a name="line.1385"></a> 1386 * @return A new string consisting of hexadecimal characters.<a name="line.1386"></a> 1387 */<a name="line.1387"></a> 1388 public static String toSpacedHex(byte[] bytes) {<a name="line.1388"></a> 1389 StringBuilder sb = new StringBuilder(bytes.length * 3);<a name="line.1389"></a> 1390 for (int j = 0; j < bytes.length; j++) {<a name="line.1390"></a> 1391 if (j > 0)<a name="line.1391"></a> 1392 sb.append(' ');<a name="line.1392"></a> 1393 int v = bytes[j] & 0xFF;<a name="line.1393"></a> 1394 sb.append(HEX[v >>> 4]).append(HEX[v & 0x0F]);<a name="line.1394"></a> 1395 }<a name="line.1395"></a> 1396 return sb.toString();<a name="line.1396"></a> 1397 }<a name="line.1397"></a> 1398<a name="line.1398"></a> 1399 /**<a name="line.1399"></a> 1400 * Converts a hexadecimal character string to a byte array.<a name="line.1400"></a> 1401 * <a name="line.1401"></a> 1402 * @param hex The string to convert to a byte array.<a name="line.1402"></a> 1403 * @return A new byte array.<a name="line.1403"></a> 1404 */<a name="line.1404"></a> 1405 public static byte[] fromHex(String hex) {<a name="line.1405"></a> 1406 ByteBuffer buff = ByteBuffer.allocate(hex.length()/2);<a name="line.1406"></a> 1407 for (int i = 0; i < hex.length(); i+=2)<a name="line.1407"></a> 1408 buff.put((byte)Integer.parseInt(hex.substring(i, i+2), 16));<a name="line.1408"></a> 1409 buff.rewind();<a name="line.1409"></a> 1410 return buff.array();<a name="line.1410"></a> 1411 }<a name="line.1411"></a> 1412<a name="line.1412"></a> 1413 /**<a name="line.1413"></a> 1414 * Same as {@link #fromHex(String)} except expects spaces between the byte strings.<a name="line.1414"></a> 1415 * <a name="line.1415"></a> 1416 * @param hex The string to convert to a byte array.<a name="line.1416"></a> 1417 * @return A new byte array.<a name="line.1417"></a> 1418 */<a name="line.1418"></a> 1419 public static byte[] fromSpacedHex(String hex) {<a name="line.1419"></a> 1420 ByteBuffer buff = ByteBuffer.allocate((hex.length()+1)/3);<a name="line.1420"></a> 1421 for (int i = 0; i < hex.length(); i+=3)<a name="line.1421"></a> 1422 buff.put((byte)Integer.parseInt(hex.substring(i, i+2), 16));<a name="line.1422"></a> 1423 buff.rewind();<a name="line.1423"></a> 1424 return buff.array();<a name="line.1424"></a> 1425 }<a name="line.1425"></a> 1426<a name="line.1426"></a> 1427 /**<a name="line.1427"></a> 1428 * Creates a repeated pattern.<a name="line.1428"></a> 1429 * <a name="line.1429"></a> 1430 * @param count The number of times to repeat the pattern.<a name="line.1430"></a> 1431 * @param pattern The pattern to repeat.<a name="line.1431"></a> 1432 * @return A new string consisting of the repeated pattern.<a name="line.1432"></a> 1433 */<a name="line.1433"></a> 1434 public static String repeat(int count, String pattern) {<a name="line.1434"></a> 1435 StringBuilder sb = new StringBuilder(pattern.length() * count);<a name="line.1435"></a> 1436 for (int i = 0; i < count; i++)<a name="line.1436"></a> 1437 sb.append(pattern);<a name="line.1437"></a> 1438 return sb.toString();<a name="line.1438"></a> 1439 }<a name="line.1439"></a> 1440<a name="line.1440"></a> 1441 /**<a name="line.1441"></a> 1442 * Trims whitespace characters from the beginning of the specified string.<a name="line.1442"></a> 1443 * <a name="line.1443"></a> 1444 * @param s The string to trim.<a name="line.1444"></a> 1445 * @return The trimmed string, or <jk>null</jk> if the string was <jk>null</jk>.<a name="line.1445"></a> 1446 */<a name="line.1446"></a> 1447 public static String trimStart(String s) {<a name="line.1447"></a> 1448 if (s != null)<a name="line.1448"></a> 1449 while (s.length() > 0 && Character.isWhitespace(s.charAt(0)))<a name="line.1449"></a> 1450 s = s.substring(1);<a name="line.1450"></a> 1451 return s;<a name="line.1451"></a> 1452 }<a name="line.1452"></a> 1453<a name="line.1453"></a> 1454 /**<a name="line.1454"></a> 1455 * Trims whitespace characters from the end of the specified string.<a name="line.1455"></a> 1456 * <a name="line.1456"></a> 1457 * @param s The string to trim.<a name="line.1457"></a> 1458 * @return The trimmed string, or <jk>null</jk> if the string was <jk>null</jk>.<a name="line.1458"></a> 1459 */<a name="line.1459"></a> 1460 public static String trimEnd(String s) {<a name="line.1460"></a> 1461 if (s != null)<a name="line.1461"></a> 1462 while (s.length() > 0 && Character.isWhitespace(s.charAt(s.length()-1)))<a name="line.1462"></a> 1463 s = s.substring(0, s.length()-1);<a name="line.1463"></a> 1464 return s;<a name="line.1464"></a> 1465 }<a name="line.1465"></a> 1466<a name="line.1466"></a> 1467 /**<a name="line.1467"></a> 1468 * Returns <jk>true</jk> if the specified string is one of the specified values.<a name="line.1468"></a> 1469 * <a name="line.1469"></a> 1470 * @param s<a name="line.1470"></a> 1471 * The string to test.<a name="line.1471"></a> 1472 * Can be <jk>null</jk>.<a name="line.1472"></a> 1473 * @param values<a name="line.1473"></a> 1474 * The values to test.<a name="line.1474"></a> 1475 * Can contain <jk>null</jk>.<a name="line.1475"></a> 1476 * @return <jk>true</jk> if the specified string is one of the specified values.<a name="line.1476"></a> 1477 */<a name="line.1477"></a> 1478 public static boolean isOneOf(String s, String...values) {<a name="line.1478"></a> 1479 for (int i = 0; i < values.length; i++)<a name="line.1479"></a> 1480 if (StringUtils.isEquals(s, values[i]))<a name="line.1480"></a> 1481 return true;<a name="line.1481"></a> 1482 return false;<a name="line.1482"></a> 1483 }<a name="line.1483"></a> 1484<a name="line.1484"></a> 1485 /**<a name="line.1485"></a> 1486 * Trims <js>'/'</js> characters from both the start and end of the specified string.<a name="line.1486"></a> 1487 * <a name="line.1487"></a> 1488 * @param s The string to trim.<a name="line.1488"></a> 1489 * @return A new trimmed string, or the same string if no trimming was necessary.<a name="line.1489"></a> 1490 */<a name="line.1490"></a> 1491 public static String trimSlashes(String s) {<a name="line.1491"></a> 1492 if (s == null)<a name="line.1492"></a> 1493 return null;<a name="line.1493"></a> 1494 while (endsWith(s, '/'))<a name="line.1494"></a> 1495 s = s.substring(0, s.length()-1);<a name="line.1495"></a> 1496 while (s.length() > 0 && s.charAt(0) == '/')<a name="line.1496"></a> 1497 s = s.substring(1);<a name="line.1497"></a> 1498 return s;<a name="line.1498"></a> 1499 }<a name="line.1499"></a> 1500<a name="line.1500"></a> 1501 /**<a name="line.1501"></a> 1502 * Trims <js>'/'</js> characters from the end of the specified string.<a name="line.1502"></a> 1503 * <a name="line.1503"></a> 1504 * @param s The string to trim.<a name="line.1504"></a> 1505 * @return A new trimmed string, or the same string if no trimming was necessary.<a name="line.1505"></a> 1506 */<a name="line.1506"></a> 1507 public static String trimTrailingSlashes(String s) {<a name="line.1507"></a> 1508 if (s == null)<a name="line.1508"></a> 1509 return null;<a name="line.1509"></a> 1510 while (endsWith(s, '/'))<a name="line.1510"></a> 1511 s = s.substring(0, s.length()-1);<a name="line.1511"></a> 1512 return s;<a name="line.1512"></a> 1513 }<a name="line.1513"></a> 1514<a name="line.1514"></a> 1515 /**<a name="line.1515"></a> 1516 * Trims <js>'/'</js> characters from the end of the specified string.<a name="line.1516"></a> 1517 * <a name="line.1517"></a> 1518 * @param s The string to trim.<a name="line.1518"></a> 1519 * @return The same string buffer.<a name="line.1519"></a> 1520 */<a name="line.1520"></a> 1521 public static StringBuffer trimTrailingSlashes(StringBuffer s) {<a name="line.1521"></a> 1522 if (s == null)<a name="line.1522"></a> 1523 return null;<a name="line.1523"></a> 1524 while (s.length() > 0 && s.charAt(s.length()-1) == '/')<a name="line.1524"></a> 1525 s.setLength(s.length()-1);<a name="line.1525"></a> 1526 return s;<a name="line.1526"></a> 1527 }<a name="line.1527"></a> 1528<a name="line.1528"></a> 1529 /**<a name="line.1529"></a> 1530 * Shortcut for calling <code>URLEncoder.<jsm>encode</jsm>(o.toString(), <js>"UTF-8"</js>)</code>.<a name="line.1530"></a> 1531 * <a name="line.1531"></a> 1532 * @param o The object to encode.<a name="line.1532"></a> 1533 * @return The URL encoded string, or <jk>null</jk> if the object was null.<a name="line.1533"></a> 1534 */<a name="line.1534"></a> 1535 public static String urlEncode(Object o) {<a name="line.1535"></a> 1536 try {<a name="line.1536"></a> 1537 if (o != null)<a name="line.1537"></a> 1538 return URLEncoder.encode(o.toString(), "UTF-8");<a name="line.1538"></a> 1539 } catch (UnsupportedEncodingException e) {}<a name="line.1539"></a> 1540 return null;<a name="line.1540"></a> 1541 }<a name="line.1541"></a> 1542<a name="line.1542"></a> 1543 private static final AsciiSet URL_ENCODE_PATHINFO_VALIDCHARS = <a name="line.1543"></a> 1544 AsciiSet.create().ranges("a-z","A-Z","0-9").chars("-_.*/()").build();<a name="line.1544"></a> 1545 <a name="line.1545"></a> 1546 /**<a name="line.1546"></a> 1547 * Similar to {@link #urlEncode(Object)} but doesn't encode <js>"/"</js> characters.<a name="line.1547"></a> 1548 * <a name="line.1548"></a> 1549 * @param o The object to encode.<a name="line.1549"></a> 1550 * @return The URL encoded string, or <jk>null</jk> if the object was null.<a name="line.1550"></a> 1551 */<a name="line.1551"></a> 1552 public static String urlEncodePath(Object o) {<a name="line.1552"></a> 1553 if (o == null)<a name="line.1553"></a> 1554 return null;<a name="line.1554"></a> 1555 String s = asString(o);<a name="line.1555"></a> 1556<a name="line.1556"></a> 1557 boolean needsEncode = false;<a name="line.1557"></a> 1558 for (int i = 0; i < s.length() && ! needsEncode; i++) <a name="line.1558"></a> 1559 needsEncode = URL_ENCODE_PATHINFO_VALIDCHARS.contains(s.charAt(i));<a name="line.1559"></a> 1560 if (! needsEncode)<a name="line.1560"></a> 1561 return s;<a name="line.1561"></a> 1562 <a name="line.1562"></a> 1563 StringBuilder sb = new StringBuilder();<a name="line.1563"></a> 1564 CharArrayWriter caw = new CharArrayWriter();<a name="line.1564"></a> 1565 int caseDiff = ('a' - 'A');<a name="line.1565"></a> 1566 <a name="line.1566"></a> 1567 for (int i = 0; i < s.length();) {<a name="line.1567"></a> 1568 char c = s.charAt(i);<a name="line.1568"></a> 1569 if (URL_ENCODE_PATHINFO_VALIDCHARS.contains(c)) {<a name="line.1569"></a> 1570 sb.append(c);<a name="line.1570"></a> 1571 i++;<a name="line.1571"></a> 1572 } else {<a name="line.1572"></a> 1573 if (c == ' ') {<a name="line.1573"></a> 1574 sb.append('+');<a name="line.1574"></a> 1575 i++;<a name="line.1575"></a> 1576 } else {<a name="line.1576"></a> 1577 do {<a name="line.1577"></a> 1578 caw.write(c);<a name="line.1578"></a> 1579 if (c >= 0xD800 && c <= 0xDBFF) {<a name="line.1579"></a> 1580 if ( (i+1) < s.length()) {<a name="line.1580"></a> 1581 int d = s.charAt(i+1);<a name="line.1581"></a> 1582 if (d >= 0xDC00 && d <= 0xDFFF) {<a name="line.1582"></a> 1583 caw.write(d);<a name="line.1583"></a> 1584 i++;<a name="line.1584"></a> 1585 }<a name="line.1585"></a> 1586 }<a name="line.1586"></a> 1587 }<a name="line.1587"></a> 1588 i++;<a name="line.1588"></a> 1589 } while (i < s.length() && !URL_ENCODE_PATHINFO_VALIDCHARS.contains((c = s.charAt(i))));<a name="line.1589"></a> 1590 <a name="line.1590"></a> 1591 caw.flush();<a name="line.1591"></a> 1592 String s2 = new String(caw.toCharArray());<a name="line.1592"></a> 1593 byte[] ba = s2.getBytes(IOUtils.UTF8);<a name="line.1593"></a> 1594 for (int j = 0; j < ba.length; j++) {<a name="line.1594"></a> 1595 sb.append('%');<a name="line.1595"></a> 1596 char ch = Character.forDigit((ba[j] >> 4) & 0xF, 16);<a name="line.1596"></a> 1597 if (Character.isLetter(ch)) {<a name="line.1597"></a> 1598 ch -= caseDiff;<a name="line.1598"></a> 1599 }<a name="line.1599"></a> 1600 sb.append(ch);<a name="line.1600"></a> 1601 ch = Character.forDigit(ba[j] & 0xF, 16);<a name="line.1601"></a> 1602 if (Character.isLetter(ch)) {<a name="line.1602"></a> 1603 ch -= caseDiff;<a name="line.1603"></a> 1604 }<a name="line.1604"></a> 1605 sb.append(ch);<a name="line.1605"></a> 1606 }<a name="line.1606"></a> 1607 caw.reset();<a name="line.1607"></a> 1608 }<a name="line.1608"></a> 1609 }<a name="line.1609"></a> 1610 }<a name="line.1610"></a> 1611 return sb.toString();<a name="line.1611"></a> 1612 }<a name="line.1612"></a> 1613 <a name="line.1613"></a> 1614 /**<a name="line.1614"></a> 1615 * Decodes a <code>application/x-www-form-urlencoded</code> string using <code>UTF-8</code> encoding scheme.<a name="line.1615"></a> 1616 * <a name="line.1616"></a> 1617 * @param s The string to decode.<a name="line.1617"></a> 1618 * @return The decoded string, or <jk>null</jk> if input is <jk>null</jk>.<a name="line.1618"></a> 1619 */<a name="line.1619"></a> 1620 public static String urlDecode(String s) {<a name="line.1620"></a> 1621 if (s == null)<a name="line.1621"></a> 1622 return s;<a name="line.1622"></a> 1623 boolean needsDecode = false;<a name="line.1623"></a> 1624 for (int i = 0; i < s.length() && ! needsDecode; i++) {<a name="line.1624"></a> 1625 char c = s.charAt(i);<a name="line.1625"></a> 1626 if (c == '+' || c == '%')<a name="line.1626"></a> 1627 needsDecode = true;<a name="line.1627"></a> 1628 }<a name="line.1628"></a> 1629 if (needsDecode) {<a name="line.1629"></a> 1630 try {<a name="line.1630"></a> 1631 return URLDecoder.decode(s, "UTF-8");<a name="line.1631"></a> 1632 } catch (UnsupportedEncodingException e) {/* Won't happen */}<a name="line.1632"></a> 1633 }<a name="line.1633"></a> 1634 return s;<a name="line.1634"></a> 1635 }<a name="line.1635"></a> 1636<a name="line.1636"></a> 1637 /**<a name="line.1637"></a> 1638 * Encodes a <code>application/x-www-form-urlencoded</code> string using <code>UTF-8</code> encoding scheme.<a name="line.1638"></a> 1639 * <a name="line.1639"></a> 1640 * @param s The string to encode.<a name="line.1640"></a> 1641 * @return The encoded string, or <jk>null</jk> if input is <jk>null</jk>.<a name="line.1641"></a> 1642 */<a name="line.1642"></a> 1643 public static String urlEncode(String s) {<a name="line.1643"></a> 1644 if (s == null)<a name="line.1644"></a> 1645 return null;<a name="line.1645"></a> 1646 boolean needsEncode = false;<a name="line.1646"></a> 1647 for (int i = 0; i < s.length() && ! needsEncode; i++)<a name="line.1647"></a> 1648 needsEncode |= (! unencodedChars.contains(s.charAt(i)));<a name="line.1648"></a> 1649 if (needsEncode) {<a name="line.1649"></a> 1650 try {<a name="line.1650"></a> 1651 return URLEncoder.encode(s, "UTF-8");<a name="line.1651"></a> 1652 } catch (UnsupportedEncodingException e) {/* Won't happen */}<a name="line.1652"></a> 1653 }<a name="line.1653"></a> 1654 return s;<a name="line.1654"></a> 1655 }<a name="line.1655"></a> 1656 <a name="line.1656"></a> 1657 /**<a name="line.1657"></a> 1658 * Splits a string into equally-sized parts.<a name="line.1658"></a> 1659 * <a name="line.1659"></a> 1660 * @param s The string to split.<a name="line.1660"></a> 1661 * @param size The token sizes.<a name="line.1661"></a> 1662 * @return The tokens, or <jk>null</jk> if the input was <jk>null</jk>.<a name="line.1662"></a> 1663 */<a name="line.1663"></a> 1664 public static List<String> splitEqually(String s, int size) {<a name="line.1664"></a> 1665 if (s == null)<a name="line.1665"></a> 1666 return null;<a name="line.1666"></a> 1667 if (size <= 0) <a name="line.1667"></a> 1668 return Collections.singletonList(s);<a name="line.1668"></a> 1669 <a name="line.1669"></a> 1670 List<String> l = new ArrayList<>((s.length() + size - 1) / size);<a name="line.1670"></a> 1671<a name="line.1671"></a> 1672 for (int i = 0; i < s.length(); i += size) <a name="line.1672"></a> 1673 l.add(s.substring(i, Math.min(s.length(), i + size)));<a name="line.1673"></a> 1674<a name="line.1674"></a> 1675 return l;<a name="line.1675"></a> 1676 }<a name="line.1676"></a> 1677<a name="line.1677"></a> 1678 /**<a name="line.1678"></a> 1679 * Returns the first non-whitespace character in the string.<a name="line.1679"></a> 1680 * <a name="line.1680"></a> 1681 * @param s The string to check.<a name="line.1681"></a> 1682 * @return<a name="line.1682"></a> 1683 * The first non-whitespace character, or <code>0</code> if the string is <jk>null</jk>, empty, or composed<a name="line.1683"></a> 1684 * of only whitespace.<a name="line.1684"></a> 1685 */<a name="line.1685"></a> 1686 public static char firstNonWhitespaceChar(String s) {<a name="line.1686"></a> 1687 if (s != null)<a name="line.1687"></a> 1688 for (int i = 0; i < s.length(); i++)<a name="line.1688"></a> 1689 if (! Character.isWhitespace(s.charAt(i)))<a name="line.1689"></a> 1690 return s.charAt(i);<a name="line.1690"></a> 1691 return 0;<a name="line.1691"></a> 1692 }<a name="line.1692"></a> 1693<a name="line.1693"></a> 1694 /**<a name="line.1694"></a> 1695 * Returns the last non-whitespace character in the string.<a name="line.1695"></a> 1696 * <a name="line.1696"></a> 1697 * @param s The string to check.<a name="line.1697"></a> 1698 * @return<a name="line.1698"></a> 1699 * The last non-whitespace character, or <code>0</code> if the string is <jk>null</jk>, empty, or composed<a name="line.1699"></a> 1700 * of only whitespace.<a name="line.1700"></a> 1701 */<a name="line.1701"></a> 1702 public static char lastNonWhitespaceChar(String s) {<a name="line.1702"></a> 1703 if (s != null)<a name="line.1703"></a> 1704 for (int i = s.length()-1; i >= 0; i--)<a name="line.1704"></a> 1705 if (! Character.isWhitespace(s.charAt(i)))<a name="line.1705"></a> 1706 return s.charAt(i);<a name="line.1706"></a> 1707 return 0;<a name="line.1707"></a> 1708 }<a name="line.1708"></a> 1709<a name="line.1709"></a> 1710 /**<a name="line.1710"></a> 1711 * Returns the character at the specified index in the string without throwing exceptions.<a name="line.1711"></a> 1712 * <a name="line.1712"></a> 1713 * @param s The string.<a name="line.1713"></a> 1714 * @param i The index position.<a name="line.1714"></a> 1715 * @return<a name="line.1715"></a> 1716 * The character at the specified index, or <code>0</code> if the index is out-of-range or the string<a name="line.1716"></a> 1717 * is <jk>null</jk>.<a name="line.1717"></a> 1718 */<a name="line.1718"></a> 1719 public static char charAt(String s, int i) {<a name="line.1719"></a> 1720 if (s == null)<a name="line.1720"></a> 1721 return 0;<a name="line.1721"></a> 1722 if (i < 0 || i >= s.length())<a name="line.1722"></a> 1723 return 0;<a name="line.1723"></a> 1724 return s.charAt(i);<a name="line.1724"></a> 1725 }<a name="line.1725"></a> 1726<a name="line.1726"></a> 1727 /**<a name="line.1727"></a> 1728 * Efficiently determines whether a URL is of the pattern "xxx://xxx"<a name="line.1728"></a> 1729 * <a name="line.1729"></a> 1730 * @param s The string to test.<a name="line.1730"></a> 1731 * @return <jk>true</jk> if it's an absolute path.<a name="line.1731"></a> 1732 */<a name="line.1732"></a> 1733 public static boolean isAbsoluteUri(String s) {<a name="line.1733"></a> 1734<a name="line.1734"></a> 1735 if (isEmpty(s))<a name="line.1735"></a> 1736 return false;<a name="line.1736"></a> 1737<a name="line.1737"></a> 1738 // Use a state machine for maximum performance.<a name="line.1738"></a> 1739<a name="line.1739"></a> 1740 int S1 = 1; // Looking for http<a name="line.1740"></a> 1741 int S2 = 2; // Found http, looking for :<a name="line.1741"></a> 1742 int S3 = 3; // Found :, looking for /<a name="line.1742"></a> 1743 int S4 = 4; // Found /, looking for /<a name="line.1743"></a> 1744 int S5 = 5; // Found /, looking for x<a name="line.1744"></a> 1745<a name="line.1745"></a> 1746 int state = S1;<a name="line.1746"></a> 1747 for (int i = 0; i < s.length(); i++) {<a name="line.1747"></a> 1748 char c = s.charAt(i);<a name="line.1748"></a> 1749 if (state == S1) {<a name="line.1749"></a> 1750 if (c >= 'a' && c <= 'z')<a name="line.1750"></a> 1751 state = S2;<a name="line.1751"></a> 1752 else<a name="line.1752"></a> 1753 return false;<a name="line.1753"></a> 1754 } else if (state == S2) {<a name="line.1754"></a> 1755 if (c == ':')<a name="line.1755"></a> 1756 state = S3;<a name="line.1756"></a> 1757 else if (c < 'a' || c > 'z')<a name="line.1757"></a> 1758 return false;<a name="line.1758"></a> 1759 } else if (state == S3) {<a name="line.1759"></a> 1760 if (c == '/')<a name="line.1760"></a> 1761 state = S4;<a name="line.1761"></a> 1762 else<a name="line.1762"></a> 1763 return false;<a name="line.1763"></a> 1764 } else if (state == S4) {<a name="line.1764"></a> 1765 if (c == '/')<a name="line.1765"></a> 1766 state = S5;<a name="line.1766"></a> 1767 else<a name="line.1767"></a> 1768 return false;<a name="line.1768"></a> 1769 } else if (state == S5) {<a name="line.1769"></a> 1770 return true;<a name="line.1770"></a> 1771 }<a name="line.1771"></a> 1772 }<a name="line.1772"></a> 1773 return false;<a name="line.1773"></a> 1774 }<a name="line.1774"></a> 1775<a name="line.1775"></a> 1776 /**<a name="line.1776"></a> 1777 * Efficiently determines whether a URL is of the pattern "xxx:/xxx".<a name="line.1777"></a> 1778 * <a name="line.1778"></a> 1779 * <a name="line.1779"></a> 1780 * The pattern matched is: <code>[a-z]{2,}\:\/.*</code><a name="line.1780"></a> 1781 * <a name="line.1781"></a> 1782 * <a name="line.1782"></a> 1783 * Note that this excludes filesystem paths such as <js>"C:/temp"</js>.<a name="line.1783"></a> 1784 * <a name="line.1784"></a> 1785 * @param s The string to test.<a name="line.1785"></a> 1786 * @return <jk>true</jk> if it's an absolute path.<a name="line.1786"></a> 1787 */<a name="line.1787"></a> 1788 public static boolean isUri(String s) {<a name="line.1788"></a> 1789<a name="line.1789"></a> 1790 if (isEmpty(s))<a name="line.1790"></a> 1791 return false;<a name="line.1791"></a> 1792<a name="line.1792"></a> 1793 // Use a state machine for maximum performance.<a name="line.1793"></a> 1794<a name="line.1794"></a> 1795 int S1 = 1; // Looking for protocol char 1<a name="line.1795"></a> 1796 int S2 = 2; // Found protocol char 1, looking for protocol char 2<a name="line.1796"></a> 1797 int S3 = 3; // Found protocol char 2, looking for :<a name="line.1797"></a> 1798 int S4 = 4; // Found :, looking for /<a name="line.1798"></a> 1799<a name="line.1799"></a> 1800<a name="line.1800"></a> 1801 int state = S1;<a name="line.1801"></a> 1802 for (int i = 0; i < s.length(); i++) {<a name="line.1802"></a> 1803 char c = s.charAt(i);<a name="line.1803"></a> 1804 if (state == S1) {<a name="line.1804"></a> 1805 if (c >= 'a' && c <= 'z')<a name="line.1805"></a> 1806 state = S2;<a name="line.1806"></a> 1807 else<a name="line.1807"></a> 1808 return false;<a name="line.1808"></a> 1809 } else if (state == S2) {<a name="line.1809"></a> 1810 if (c >= 'a' && c <= 'z')<a name="line.1810"></a> 1811 state = S3;<a name="line.1811"></a> 1812 else<a name="line.1812"></a> 1813 return false;<a name="line.1813"></a> 1814 } else if (state == S3) {<a name="line.1814"></a> 1815 if (c == ':')<a name="line.1815"></a> 1816 state = S4;<a name="line.1816"></a> 1817 else if (c < 'a' || c > 'z')<a name="line.1817"></a> 1818 return false;<a name="line.1818"></a> 1819 } else if (state == S4) {<a name="line.1819"></a> 1820 if (c == '/')<a name="line.1820"></a> 1821 return true;<a name="line.1821"></a> 1822 return false;<a name="line.1822"></a> 1823 }<a name="line.1823"></a> 1824 }<a name="line.1824"></a> 1825 return false;<a name="line.1825"></a> 1826 }<a name="line.1826"></a> 1827<a name="line.1827"></a> 1828 /**<a name="line.1828"></a> 1829 * Given an absolute URI, returns just the authority portion (e.g. <js>"http://hostname:port"</js>)<a name="line.1829"></a> 1830 * <a name="line.1830"></a> 1831 * @param s The URI string.<a name="line.1831"></a> 1832 * @return Just the authority portion of the URI.<a name="line.1832"></a> 1833 */<a name="line.1833"></a> 1834 public static String getAuthorityUri(String s) {<a name="line.1834"></a> 1835<a name="line.1835"></a> 1836 // Use a state machine for maximum performance.<a name="line.1836"></a> 1837<a name="line.1837"></a> 1838 int S1 = 1; // Looking for http<a name="line.1838"></a> 1839 int S2 = 2; // Found http, looking for :<a name="line.1839"></a> 1840 int S3 = 3; // Found :, looking for /<a name="line.1840"></a> 1841 int S4 = 4; // Found /, looking for /<a name="line.1841"></a> 1842 int S5 = 5; // Found /, looking for x<a name="line.1842"></a> 1843 int S6 = 6; // Found x, looking for /<a name="line.1843"></a> 1844<a name="line.1844"></a> 1845 int state = S1;<a name="line.1845"></a> 1846 for (int i = 0; i < s.length(); i++) {<a name="line.1846"></a> 1847 char c = s.charAt(i);<a name="line.1847"></a> 1848 if (state == S1) {<a name="line.1848"></a> 1849 if (c >= 'a' && c <= 'z')<a name="line.1849"></a> 1850 state = S2;<a name="line.1850"></a> 1851 else<a name="line.1851"></a> 1852 return s;<a name="line.1852"></a> 1853 } else if (state == S2) {<a name="line.1853"></a> 1854 if (c == ':')<a name="line.1854"></a> 1855 state = S3;<a name="line.1855"></a> 1856 else if (c < 'a' || c > 'z')<a name="line.1856"></a> 1857 return s;<a name="line.1857"></a> 1858 } else if (state == S3) {<a name="line.1858"></a> 1859 if (c == '/')<a name="line.1859"></a> 1860 state = S4;<a name="line.1860"></a> 1861 else<a name="line.1861"></a> 1862 return s;<a name="line.1862"></a> 1863 } else if (state == S4) {<a name="line.1863"></a> 1864 if (c == '/')<a name="line.1864"></a> 1865 state = S5;<a name="line.1865"></a> 1866 else<a name="line.1866"></a> 1867 return s;<a name="line.1867"></a> 1868 } else if (state == S5) {<a name="line.1868"></a> 1869 if (c != '/')<a name="line.1869"></a> 1870 state = S6;<a name="line.1870"></a> 1871 else<a name="line.1871"></a> 1872 return s;<a name="line.1872"></a> 1873 } else if (state == S6) {<a name="line.1873"></a> 1874 if (c == '/')<a name="line.1874"></a> 1875 return s.substring(0, i);<a name="line.1875"></a> 1876 }<a name="line.1876"></a> 1877 }<a name="line.1877"></a> 1878 return s;<a name="line.1878"></a> 1879 }<a name="line.1879"></a> 1880<a name="line.1880"></a> 1881 /**<a name="line.1881"></a> 1882 * Converts the specified object to a URI.<a name="line.1882"></a> 1883 * <a name="line.1883"></a> 1884 * @param o The object to convert to a URI.<a name="line.1884"></a> 1885 * @return A new URI, or the same object if the object was already a URI, or<a name="line.1885"></a> 1886 */<a name="line.1886"></a> 1887 public static URI toURI(Object o) {<a name="line.1887"></a> 1888 if (o == null || o instanceof URI)<a name="line.1888"></a> 1889 return (URI)o;<a name="line.1889"></a> 1890 try {<a name="line.1890"></a> 1891 return new URI(o.toString());<a name="line.1891"></a> 1892 } catch (URISyntaxException e) {<a name="line.1892"></a> 1893 throw new RuntimeException(e);<a name="line.1893"></a> 1894 }<a name="line.1894"></a> 1895 }<a name="line.1895"></a> 1896<a name="line.1896"></a> 1897 /**<a name="line.1897"></a> 1898 * Returns the first non-null, non-empty string in the list.<a name="line.1898"></a> 1899 * <a name="line.1899"></a> 1900 * @param s The strings to test.<a name="line.1900"></a> 1901 * @return The first non-empty string in the list, or <jk>null</jk> if they were all <jk>null</jk> or empty.<a name="line.1901"></a> 1902 */<a name="line.1902"></a> 1903 public static String firstNonEmpty(String...s) {<a name="line.1903"></a> 1904 for (String ss : s)<a name="line.1904"></a> 1905 if (! isEmpty(ss))<a name="line.1905"></a> 1906 return ss;<a name="line.1906"></a> 1907 return null;<a name="line.1907"></a> 1908 }<a name="line.1908"></a> 1909<a name="line.1909"></a> 1910 /**<a name="line.1910"></a> 1911 * Same as {@link String#indexOf(int)} except allows you to check for multiple characters.<a name="line.1911"></a> 1912 * <a name="line.1912"></a> 1913 * @param s The string to check.<a name="line.1913"></a> 1914 * @param c The characters to check for.<a name="line.1914"></a> 1915 * @return The index into the string that is one of the specified characters.<a name="line.1915"></a> 1916 */<a name="line.1916"></a> 1917 public static int indexOf(String s, char...c) {<a name="line.1917"></a> 1918 if (s == null)<a name="line.1918"></a> 1919 return -1;<a name="line.1919"></a> 1920 for (int i = 0; i < s.length(); i++) {<a name="line.1920"></a> 1921 char c2 = s.charAt(i);<a name="line.1921"></a> 1922 for (char cc : c)<a name="line.1922"></a> 1923 if (c2 == cc)<a name="line.1923"></a> 1924 return i;<a name="line.1924"></a> 1925 }<a name="line.1925"></a> 1926 return -1;<a name="line.1926"></a> 1927 }<a name="line.1927"></a> 1928<a name="line.1928"></a> 1929 /**<a name="line.1929"></a> 1930 * Similar to {@link MessageFormat#format(String, Object...)} except allows you to specify POJO arguments.<a name="line.1930"></a> 1931 * <a name="line.1931"></a> 1932 * @param pattern The string pattern.<a name="line.1932"></a> 1933 * @param args The arguments.<a name="line.1933"></a> 1934 * @return The formatted string.<a name="line.1934"></a> 1935 */<a name="line.1935"></a> 1936 public static String format(String pattern, Object...args) {<a name="line.1936"></a> 1937 if (args == null || args.length == 0)<a name="line.1937"></a> 1938 return pattern;<a name="line.1938"></a> 1939 for (int i = 0; i < args.length; i++)<a name="line.1939"></a> 1940 args[i] = convertToReadable(args[i]);<a name="line.1940"></a> 1941 return MessageFormat.format(pattern, args);<a name="line.1941"></a> 1942 }<a name="line.1942"></a> 1943<a name="line.1943"></a> 1944 private static Object convertToReadable(Object o) {<a name="line.1944"></a> 1945 if (o == null)<a name="line.1945"></a> 1946 return null;<a name="line.1946"></a> 1947 if (o instanceof ClassMeta)<a name="line.1947"></a> 1948 return ((ClassMeta<?>)o).getReadableName();<a name="line.1948"></a> 1949 if (BeanContext.DEFAULT == null)<a name="line.1949"></a> 1950 return o.toString();<a name="line.1950"></a> 1951 ClassMeta<?> cm = BeanContext.DEFAULT.getClassMetaForObject(o);<a name="line.1951"></a> 1952 if (cm.isMapOrBean() || cm.isCollectionOrArray())<a name="line.1952"></a> 1953 return JsonSerializer.DEFAULT_LAX.toString(o);<a name="line.1953"></a> 1954 if (cm.isClass())<a name="line.1954"></a> 1955 return ((Class<?>)o).getName();<a name="line.1955"></a> 1956 if (cm.isMethod())<a name="line.1956"></a> 1957 return ClassUtils.toString((Method)o);<a name="line.1957"></a> 1958 return o.toString();<a name="line.1958"></a> 1959 }<a name="line.1959"></a> 1960 <a name="line.1960"></a> 1961 /**<a name="line.1961"></a> 1962 * Converts a string containing a possible multiplier suffix to an integer.<a name="line.1962"></a> 1963 * <a name="line.1963"></a> 1964 * <a name="line.1964"></a> 1965 * The string can contain any of the following multiplier suffixes:<a name="line.1965"></a> 1966 * <ul><a name="line.1966"></a> 1967 * <li><js>"K"</js> - x 1024<a name="line.1967"></a> 1968 * <li><js>"M"</js> - x 1024*1024<a name="line.1968"></a> 1969 * <li><js>"G"</js> - x 1024*1024*1024<a name="line.1969"></a> 1970 * </ul><a name="line.1970"></a> 1971 * <a name="line.1971"></a> 1972 * @param s The string to parse.<a name="line.1972"></a> 1973 * @return The parsed value.<a name="line.1973"></a> 1974 */<a name="line.1974"></a> 1975 public static int parseIntWithSuffix(String s) {<a name="line.1975"></a> 1976 assertFieldNotNull(s, "s");<a name="line.1976"></a> 1977 int m = 1;<a name="line.1977"></a> 1978 if (s.endsWith("G")) {<a name="line.1978"></a> 1979 m = 1024*1024*1024;<a name="line.1979"></a> 1980 s = s.substring(0, s.length()-1).trim();<a name="line.1980"></a> 1981 } else if (s.endsWith("M")) {<a name="line.1981"></a> 1982 m = 1024*1024;<a name="line.1982"></a> 1983 s = s.substring(0, s.length()-1).trim();<a name="line.1983"></a> 1984 } else if (s.endsWith("K")) {<a name="line.1984"></a> 1985 m = 1024;<a name="line.1985"></a> 1986 s = s.substring(0, s.length()-1).trim();<a name="line.1986"></a> 1987 }<a name="line.1987"></a> 1988 return Integer.decode(s) * m;<a name="line.1988"></a> 1989 }<a name="line.1989"></a> 1990 <a name="line.1990"></a> 1991 /**<a name="line.1991"></a> 1992 * Converts a string containing a possible multiplier suffix to a long.<a name="line.1992"></a> 1993 * <a name="line.1993"></a> 1994 * <a name="line.1994"></a> 1995 * The string can contain any of the following multiplier suffixes:<a name="line.1995"></a> 1996 * <ul><a name="line.1996"></a> 1997 * <li><js>"K"</js> - x 1024<a name="line.1997"></a> 1998 * <li><js>"M"</js> - x 1024*1024<a name="line.1998"></a> 1999 * <li><js>"G"</js> - x 1024*1024*1024<a name="line.1999"></a> 2000 * </ul><a name="line.2000"></a> 2001 * <a name="line.2001"></a> 2002 * @param s The string to parse.<a name="line.2002"></a> 2003 * @return The parsed value.<a name="line.2003"></a> 2004 */<a name="line.2004"></a> 2005 public static long parseLongWithSuffix(String s) {<a name="line.2005"></a> 2006 assertFieldNotNull(s, "s");<a name="line.2006"></a> 2007 int m = 1;<a name="line.2007"></a> 2008 if (s.endsWith("G")) {<a name="line.2008"></a> 2009 m = 1024*1024*1024;<a name="line.2009"></a> 2010 s = s.substring(0, s.length()-1).trim();<a name="line.2010"></a> 2011 } else if (s.endsWith("M")) {<a name="line.2011"></a> 2012 m = 1024*1024;<a name="line.2012"></a> 2013 s = s.substring(0, s.length()-1).trim();<a name="line.2013"></a> 2014 } else if (s.endsWith("K")) {<a name="line.2014"></a> 2015 m = 1024;<a name="line.2015"></a> 2016 s = s.substring(0, s.length()-1).trim();<a name="line.2016"></a> 2017 }<a name="line.2017"></a> 2018 return Long.decode(s) * m;<a name="line.2018"></a> 2019 }<a name="line.2019"></a> 2020 <a name="line.2020"></a> 2021 /**<a name="line.2021"></a> 2022 * Same as {@link String#contains(CharSequence)} except returns <jk>null</jk> if the value is null.<a name="line.2022"></a> 2023 * <a name="line.2023"></a> 2024 * @param value The string to check.<a name="line.2024"></a> 2025 * @param substring The value to check for.<a name="line.2025"></a> 2026 * @return <jk>true</jk> if the value contains the specified substring.<a name="line.2026"></a> 2027 */<a name="line.2027"></a> 2028 public static boolean contains(String value, CharSequence substring) {<a name="line.2028"></a> 2029 return value == null ? false : value.contains(substring);<a name="line.2029"></a> 2030 }<a name="line.2030"></a> 2031 <a name="line.2031"></a> 2032 /**<a name="line.2032"></a> 2033 * Returns <jk>true</jk> if the specified string appears to be an JSON array.<a name="line.2033"></a> 2034 * <a name="line.2034"></a> 2035 * @param o The object to test.<a name="line.2035"></a> 2036 * @return <jk>true</jk> if the specified string appears to be a JSON array.<a name="line.2036"></a> 2037 */<a name="line.2037"></a> 2038 public static boolean isObjectList(Object o) {<a name="line.2038"></a> 2039 if (o instanceof CharSequence) {<a name="line.2039"></a> 2040 String s = o.toString();<a name="line.2040"></a> 2041 return (s.startsWith("[") && s.endsWith("]") && BeanContext.DEFAULT != null);<a name="line.2041"></a> 2042 }<a name="line.2042"></a> 2043 return false;<a name="line.2043"></a> 2044 }<a name="line.2044"></a> 2045<a name="line.2045"></a> 2046 /**<a name="line.2046"></a> 2047 * Returns <jk>true</jk> if the specified string appears to be a JSON object.<a name="line.2047"></a> 2048 * <a name="line.2048"></a> 2049 * @param o The object to test.<a name="line.2049"></a> 2050 * @return <jk>true</jk> if the specified string appears to be a JSON object.<a name="line.2050"></a> 2051 */<a name="line.2051"></a> 2052 public static boolean isObjectMap(Object o) {<a name="line.2052"></a> 2053 if (o instanceof CharSequence) {<a name="line.2053"></a> 2054 String s = o.toString();<a name="line.2054"></a> 2055 return (s.startsWith("{") && s.endsWith("}") && BeanContext.DEFAULT != null);<a name="line.2055"></a> 2056 }<a name="line.2056"></a> 2057 return false;<a name="line.2057"></a> 2058 }<a name="line.2058"></a> 2059}<a name="line.2059"></a> </pre> </div> </body> </html>

content/site/apidocs-7.1.0/src-html/org/apache/juneau/internal/StringUtils.html (2,071 lines of code) (raw):