package com.idega.util;
import java.io.IOException;
import java.io.LineNumberReader;
import java.io.StringReader;
import java.text.CharacterIterator;
import java.text.StringCharacterIterator;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class StringUtil {
public static List<String> getValuesFromString(String value, String separator) {
if (value == null || separator == null)
return null;
String[] values = value.split(separator);
if (values == null)
return null;
List<String> extractedValues = new ArrayList<String>();
Collections.addAll(extractedValues, values);
return extractedValues;
}
/**
* Handy method for null and empty check
* @param string to check if is null or empty string
* @return return str == null || str.length() == 0;
*/
public static boolean isEmpty(String str) {
return str == null || str.length() == 0;
}
/**
* Escape characters for text appearing in HTML markup.
*
* <P>The following characters are replaced with corresponding HTML character entities :
* <table border='1' cellpadding='3' cellspacing='0'>
* <tr><th> Character </th><th>Replacement</th></tr>
* <tr><td> < </td><td> "<" </td></tr>
* <tr><td> > </td><td> > </td></tr>
* <tr><td> & </td><td> & </td></tr>
* <tr><td> " </td><td> "</td></tr>
* <tr><td> \t </td><td> </td></tr>
* <tr><td> ! </td><td> !</td></tr>
* <tr><td> # </td><td> #</td></tr>
* <tr><td> $ </td><td> $</td></tr>
* <tr><td> % </td><td> %</td></tr>
* <tr><td> ' </td><td> '</td></tr>
* <tr><td> ( </td><td> (</td></tr>
* <tr><td> ) </td><td> )</td></tr>
* <tr><td> * </td><td> *</td></tr>
* <tr><td> + </td><td> + </td></tr>
* <tr><td> , </td><td> , </td></tr>
* <tr><td> - </td><td> - </td></tr>
* <tr><td> . </td><td> . </td></tr>
* <tr><td> / </td><td> / </td></tr>
* <tr><td> : </td><td> :</td></tr>
* <tr><td> ; </td><td> ;</td></tr>
* <tr><td> = </td><td> =</td></tr>
* <tr><td> ? </td><td> ?</td></tr>
* <tr><td> @ </td><td> @</td></tr>
* <tr><td> [ </td><td> [</td></tr>
* <tr><td> \ </td><td> \</td></tr>
* <tr><td> ] </td><td> ]</td></tr>
* <tr><td> ^ </td><td> ^</td></tr>
* <tr><td> _ </td><td> _</td></tr>
* <tr><td> ` </td><td> `</td></tr>
* <tr><td> { </td><td> {</td></tr>
* <tr><td> | </td><td> |</td></tr>
* <tr><td> } </td><td> }</td></tr>
* <tr><td> ~ </td><td> ~</td></tr>
* </table>
*/
public static String escapeHTMLSpecialChars(String aText){
StringBuilder result = new StringBuilder();
StringCharacterIterator iterator = new StringCharacterIterator(aText);
char character = iterator.current();
while (character != CharacterIterator.DONE ){
if (character == '<') {
result.append("<");
}
else if (character == '>') {
result.append(">");
}
else if (character == '&') {
result.append("&");
}
else if (character == '\"') {
result.append(""");
}
else if (character == '\t') {
addCharEntity(9, result);
}
else if (character == '!') {
addCharEntity(33, result);
}
else if (character == '#') {
addCharEntity(35, result);
}
else if (character == '$') {
addCharEntity(36, result);
}
else if (character == '%') {
addCharEntity(37, result);
}
else if (character == '\'') {
addCharEntity(39, result);
}
else if (character == '(') {
addCharEntity(40, result);
}
else if (character == ')') {
addCharEntity(41, result);
}
else if (character == '*') {
addCharEntity(42, result);
}
else if (character == '+') {
addCharEntity(43, result);
}
else if (character == ',') {
addCharEntity(44, result);
}
else if (character == '-') {
addCharEntity(45, result);
}
else if (character == '.') {
addCharEntity(46, result);
}
else if (character == '/') {
addCharEntity(47, result);
}
else if (character == ':') {
addCharEntity(58, result);
}
else if (character == ';') {
addCharEntity(59, result);
}
else if (character == '=') {
addCharEntity(61, result);
}
else if (character == '?') {
addCharEntity(63, result);
}
else if (character == '@') {
addCharEntity(64, result);
}
else if (character == '[') {
addCharEntity(91, result);
}
else if (character == '\\') {
addCharEntity(92, result);
}
else if (character == ']') {
addCharEntity(93, result);
}
else if (character == '^') {
addCharEntity(94, result);
}
else if (character == '_') {
addCharEntity(95, result);
}
else if (character == '`') {
addCharEntity(96, result);
}
else if (character == '{') {
addCharEntity(123, result);
}
else if (character == '|') {
addCharEntity(124, result);
}
else if (character == '}') {
addCharEntity(125, result);
}
else if (character == '~') {
addCharEntity(126, result);
}
else {
//the char is not a special one
//add it to the result as is
result.append(character);
}
character = iterator.next();
}
return result.toString();
}
private static void addCharEntity(Integer aIdx, StringBuilder aBuilder){
String padding = "";
if( aIdx <= 9 ){
padding = "00";
}
else if( aIdx <= 99 ){
padding = "0";
}
else {
//no prefix
}
String number = padding + aIdx.toString();
aBuilder.append("&#" + number + ";");
}
/**
* Escape characters not allowed in file names;
*
* @param pdfName
* @return escaped file name;
*/
public static String escapeFileNameSpecialCharacters(String fileName) {
StringBuilder result = new StringBuilder();
StringCharacterIterator iterator = new StringCharacterIterator(fileName);
char character = iterator.current();
while (character != CharacterIterator.DONE) {
switch (character) {
case '/':
case '\\':
case ':':
case '|':
case '?':
case '%':
case '*':
case '>':
case '<': {
result.append("_").append((int) (character)).append("_");
break;
}
default:
// the char is not a special one
// add it to the result as is
result.append(character);
}
character = iterator.next();
}
return result.toString();
}
public static List<String> getLinesFromString(String content) {
List<String> strings = new ArrayList<String>();
LineNumberReader lineReader = new LineNumberReader(new StringReader(content));
try {
lineReader.mark(1);
while (lineReader.read() != -1) {
lineReader.reset();
strings.add(lineReader.readLine());
lineReader.mark(1);
}
} catch(IOException e) {
e.printStackTrace();
} finally {
IOUtil.closeReader(lineReader);
}
return strings;
}
}