- /**
- * schließt einen String in Anführungsszeichen ein, falls er Leerzeichen o.ä. enthält
- *
- * @return gequoteter String
- */
- public static String quoteIfNecessary(String s) {
- for (int i = 0; i < s.length(); i++)
- if (!(Character.isLetterOrDigit(s.charAt(i)) || s.charAt(i) == '.'))
- return quote(s, '"');
- return s;
- }
-
- /**
- * schließt <code>s</code> in <code>'</code> ein und setzt Backslashes vor
- * "gefährliche" Zeichen innerhalb des Strings
- * Quotes special SQL-characters in <code>s</code>
- *
- * @return geqoteter String
- */
- public static String quote(String s)
- {
- //String s2 = quote(s, '\'');
- //Quickhack ÊÊ Ê Ê Ê Ê Ê Ê
- //Because of '?-Bug in Postgresql-JDBC-Driver
- StringBuffer temp = new StringBuffer();
- for(int i=0;i<s.length();i++){
- if(s.charAt(i)=='\''){
- temp.append("'");
- } else {
- temp.append(s.charAt(i));
- }
- }
- String s2 = temp.toString();
- //end Quickhack
-
- s2 = quote(s2, '\"');
- return s2;
- }
-
- /**
- * schließt <code>s</code> in <code>'</code> ein und setzt Backslashes vor
- * "gefährliche" Zeichen innerhalb des Strings
- *
- * @param s String, der gequoted werden soll
- * @param quoteChar zu quotendes Zeichen
- * @return gequoteter String
- */
- public static String quote(String s, char quoteChar)
- {
- StringBuffer buf = new StringBuffer(s.length());
- int pos = 0;
- while (pos < s.length()) {
- int i = s.indexOf(quoteChar, pos);
- if (i < 0) i = s.length();
- buf.append(s.substring(pos, i));
- pos = i;
- if (pos < s.length()) {
- buf.append('\\');
- buf.append(quoteChar);
- pos++;
- }
- }
- return buf.toString();
- }
-
- /**
- * replaces dangerous characters in <code>s</code>
- *
- */
-
- public static String unquote(String s)
- {
- char quoteChar='\'';
- StringBuffer buf = new StringBuffer(s.length());
- int pos = 0;
- String searchString = "\\"+quoteChar;
- while (pos < s.length()) {
- int i = s.indexOf(searchString, pos);
- if (i < 0) i = s.length();
- buf.append(s.substring(pos, i));
- pos = i+1;
- }
- return buf.toString();
- }
-
- /**
- * Wandelet String in byte[] um.
- * @param s
- * @return byte[] des String
- */
-
- public static byte[] stringToBytes(String s) {
- String crlf = System.getProperty("line.separator");
- if (!crlf.equals("\n"))
- s = replace(s, "\n", crlf);
- // byte[] buf = new byte[s.length()];
- byte[] buf = s.getBytes();
- return buf;
- }
-
- /**
- * Ersetzt in String <code>s</code> das <code>pattern</code> durch <code>substitute</code>
- * @param s
- * @param pattern
- * @param substitute
- * @return String mit den Ersetzungen
- */
- public static String replace(String s, String pattern, String substitute) {
- int i = 0, pLen = pattern.length(), sLen = substitute.length();
- StringBuffer buf = new StringBuffer(s.length());
- while (true) {
- int j = s.indexOf(pattern, i);
- if (j < 0) {
- buf.append(s.substring(i));
- break;
- } else {
- buf.append(s.substring(i, j));
- buf.append(substitute);
- i = j+pLen;
- }
- }
- return buf.toString();
- }
-
- /**
- * Ersetzt in String <code>s</code> das Regexp <code>pattern</code> durch <code>substitute</code>
- * @param s
- * @param pattern
- * @param substitute
- * @return String mit den Ersetzungen
- */
- public static String regexpReplace(String haystack, String pattern, String substitute) {
- try {
- RE regex = new RE(pattern);
- return regex.substituteAll(haystack,substitute);
- } catch(REException ex){
- return null;
- }
- }
-
-
-
-
- /**
- * Fügt einen Separator an den Pfad an
- * @param path
- * @return Pfad mit Separator am Ende
- */
- public static final String addSeparator (String path) {
- return path.length() == 0 || path.endsWith(File.separator) ? path : path
- + File.separatorChar;
- }
-
- /**
- * Fügt ein <code>/</code> ans ende des Strings and
- * @param path
- * @return Pfad mit <code>/</code> am Ende
- */
- public static final String addSlash (String path) {
- return path.length() == 0 || path.endsWith("/") ? path : path + '/';
- }
-
- /**
- * Löscht <code>/</code> am Ende des Strings, falls vorhanden
- * @param path
- * @return String ohne <code>/</code> am Ende
- */
- public static final String removeSlash (String path) {
- return path.length() > 1 && path.endsWith("/") ? path.substring(0, path.length()
- - 1) : path;
- }
-
- /**
- * Checks to see if the path is absolute by looking for a leading file
- * separater
- * @param path
- * @return
- */
- public static boolean isAbsolutePath (String path) {
- return path.startsWith(File.separator);
- }
-
- /**
- * Löscht Slash am Anfang des Strings
- * @param path
- * @return
- */
- public static String removeFirstSlash (String path) {
- return path.startsWith("/") ? path.substring(1) : path;
- }
-
- /**
- * formatiert eine Zahl (0-99) zweistellig (z.B. 5 -> 05)
- * @return zwistellige Zahl
- */
- public static String pad2 (int number) {
- return number < 10 ? "0" + number : String.valueOf(number);
- }
-
- /**
- * formatiert eine Zahl (0-999) dreistellig (z.B. 7 -> 007)
- *
- * @return 3-stellige Zahl
- */
- public static String pad3 (int number) {
- return number < 10 ? "00" + number : number < 100 ? "0" + number : String.valueOf(number);
- }
-
- /**
- * Konvertiert Unix-Linefeeds in Win-Linefeeds
- * @param s
- * @return Konvertierter String
- */
- public static String unixLineFeedsToWin(String s) {
- int i = -1;
- while (true) {
- i = s.indexOf('\n', i+1);
- if (i < 0) break;
- if ((i == 0 || s.charAt(i-1) != '\r') &&
- (i == s.length()-1 || s.charAt(i+1) != '\r')) {
- s = s.substring(0, i)+'\r'+s.substring(i);
- i++;
- }
- }
- return s;
- }
-
-
- /**
- * verwandelt einen String in eine gültige Url, konvertiert Sonderzeichen
- * und Spaces werden zu Underscores
- *
- * @return gültige Url
- */
- public static String convert2url(String s) {
- s = toLowerCase(s);
- StringBuffer buf = new StringBuffer();
- for(int i = 0; i < s.length(); i++ ) {
- switch( s.charAt( i ) ) {
- case 'ö':
- buf.append( "oe" ); break;
- case 'ä':
- buf.append( "ae" ); break;
- case 'ü':
- buf.append( "ue" ); break;
- case 'ã':
- buf.append( "a" ); break;
- case '´':
- case '.':
- buf.append( "_" ); break;
- case ' ':
- if( buf.charAt( buf.length() - 1 ) != '_' ) {
- buf.append( "_" );
- }
- break;
- default:
- buf.append( s.charAt( i ) );
- }
- }
- return buf.toString();
- }
-
-
- public static String decodeHTMLinTags(String s){
- StringBuffer buffer = new StringBuffer();
- boolean start = false;
- boolean stop = false;
- int startIndex = 0;
- int stopIndex = 0;
- int temp = 0;
-
- for(int i=0;i<s.length();i++){
- if(s.charAt(i)=='<'){
- start = true;
- startIndex = i;
- } else if(s.charAt(i)=='>'){
- stop = true;
- stopIndex = i;
-
- if(start && stop){
- buffer.append(s.substring(temp,startIndex));
- buffer.append(replaceQuot(s.substring(startIndex,stopIndex+1)));
- i= temp= stopIndex+1;
- start= stop= false;
- }
- }
- }
- if(stopIndex>0){
- buffer.append(s.substring(stopIndex+1));
- return buffer.toString();
- } else {
- return s;
- }
- }
-
- public static String replaceQuot(String s) {
- StringBuffer buffer = new StringBuffer();
- for(int j = 0; j < s.length();j++){
- if(s.charAt(j)=='&'){
- if(s.indexOf( """,j) == j) {
- buffer.append( "\"" );
- j += 5;
- }//if
- } else {
- buffer.append(s.charAt(j));
- }//else
- }//for
- return buffer.toString();
- }
-
- /** wandelt Quotes in Sonderzeichen um
- */
- /**
- public static String decodeHtml(String s) {
- StringBuffer buf = new StringBuffer();
- for(int i=0;i < s.length(); i++ ) {
- if( s.indexOf( "ö", i ) == i ) {
- buf.append( "ö" ); i += 5;
- continue;
- }
- if( s.indexOf( "ä", i ) == i ) {
- buf.append( "ä" ); i += 5;
- continue;
- }
- if( s.indexOf( "ü", i ) == i ) {
- buf.append( "ü" ); i += 5;
- continue;
- }
- if( s.indexOf( "Ö", i ) == i ) {
- buf.append( "Ö" ); i += 5;
- continue;
- }
- if( s.indexOf( "Ä", i ) == i ) {
- buf.append( "Ä" ); i += 5;
- continue;
- }
- if( s.indexOf( "Ü", i ) == i ) {
- buf.append( "Ü" ); i += 5;
- continue;
- }
- if( s.indexOf( "ß", i ) == i ) {
- buf.append( "ß" ); i += 6;
- continue;
- }
- if( s.indexOf( """, i ) == i ) {
- buf.append( "\"" ); i += 5;
- continue;
- }
- buf.append( s.charAt(i) );
- }
- return buf.toString();
- }
- */
-
- /**
- * schnellere Variante der String.toLowerCase()-Routine
- *
- * @return String in Kleinbuchsten
- */
- public static String toLowerCase(String s) {
- int l = s.length();
- char[] a = new char[l];
- for (int i = 0; i < l; i++)
- a[i] = Character.toLowerCase(s.charAt(i));
- return new String(a);
- }
-
- /**
- * Findet <code>element</code> im String-Array <code>array</code>
- * @param array
- * @param element
- * @return Fundstelle als int oder -1
- */
- public static int indexOf(String[] array, String element) {
- if (array != null)
- for (int i = 0; i < array.length; i++)
- if (array[i].equals(element))
- return i;
- return -1;
- }
-
- /**
- * Testet auf Vorkommen von <code>element</code> in <code>array</code>
- * @param array String-Array
- * @param element
- * @return true wenn <code>element</code> vorkommt, sonst false
- */
- public static boolean contains(String[] array, String element) {
- return indexOf(array, element) >= 0;
- }
-
- /**
- * Ermittelt CRC-Prüfsumme von String <code>s</code>
- * @param s
- * @return CRC-Prüfsumme
- */
- public static int getCRC(String s) {
- int h = 0;
- char val[] = s.toCharArray();
- int len = val.length;
-
- for (int i = 0 ; i < len; i++) {
- h &= 0x7fffffff;
- h = (((h >> 30) | (h << 1)) ^ (val[i]+i));
- }
-
- return (h << 8) | (len & 0xff);
- }
-
- /**
- * Liefert Default-Wert def zurück, wenn String <code>s</code>
- * kein Integer ist.
- *
- * @param s
- * @param def
- * @return geparster int aus s oder def
- */
- public static int parseInt(String s, int def) {
- if (s == null) return def;
- try {
- return Integer.parseInt(s);
- } catch (NumberFormatException e) {
- return def;
- }
- }
-
- /**
- * Liefert Defaultwert def zurück, wenn s nicht zu einem float geparsed werden kann.
- * @param s
- * @param def
- * @return geparster float oder def
- */
- public static float parseFloat(String s, float def) {
- if (s == null) return def;
- try {
- return new Float(s).floatValue();
- } catch (NumberFormatException e) {
- return def;
- }
- }
-
- /**
- * Findet Ende eines Satzes in String <code>text</code>
- * @param text
- * @param startIndex
- * @return index des Satzendes, oder -1
- */
- public static int findEndOfSentence(String text, int startIndex) {
- while (true) {
- int i = text.indexOf('.', startIndex);
- if (i < 0) return -1;
- if (i > 0 && !Character.isDigit(text.charAt(i-1)) &&
- (i+1 >= text.length()
- || text.charAt(i+1) == ' '
- || text.charAt(i+1) == '\n'
- || text.charAt(i+1) == '\t'))
- return i+1;
- startIndex = i+1;
- }
- }
-
- /**
- * Findet Wortende in String <code>text</code> ab <code>startIndex</code>
- * @param text
- * @param startIndex
- * @return Index des Wortendes, oder -1
- */
- public static int findEndOfWord(String text, int startIndex) {
- int i = text.indexOf(' ', startIndex),
- j = text.indexOf('\n', startIndex);
- if (i < 0) i = text.length();
- if (j < 0) j = text.length();
- return Math.min(i, j);
- }
-
-
- /**
- * convertNewline2P ist eine regex-routine zum umwandeln von 2 oder mehr newlines (\n)
- * in den html-tag <p>
- * nur sinnvoll, wenn text nicht im html-format eingegeben
- */
- public static String convertNewline2P(String haystack) {
- return re_brbr2p.substituteAll(haystack,"\n</p><p>");
- }
-
- /**
- * convertNewline2Break ist eine regex-routine zum umwandeln von 1 newline (\n)
- * in den html-tag <br>
- * nur sinnvoll, wenn text nicht im html-format eingegeben
- */
- public static String convertNewline2Break(String haystack) {
- return re_newline2br.substituteAll(haystack,"$0<br />");
- }
-
- /**
- * createMailLinks wandelt text im email-adressenformat
- * in einen klickbaren link um
- * nur sinnvoll, wenn text nicht im html-format eingegeben
- */
- public static String createMailLinks(String haystack) {
- return re_mail.substituteAll(haystack,"<a href=\"mailto:$0\">$0</a>");
- }
-
-
- /**
- * createMailLinks wandelt text im email-adressenformat
- * in einen klickbaren link um
- * nur sinnvoll, wenn text nicht im html-format eingegeben
- */
- public static String createMailLinks(String haystack, String imageRoot, String mailImage) {
- return re_mail.substituteAll(haystack,"<img src=\""+imageRoot+"/"+mailImage+"\" border=\"0\"/> <a href=\"mailto:$0\">$0</a>");
- }
-
-
- /**
- * createURLLinks wandelt text im url-format
- * in einen klickbaren link um
- * nur sinnvoll, wenn text nicht im html-format eingegeben
- */
- public static String createURLLinks(String haystack) {
- return re_url.substituteAll(haystack,"<a href=\"$0\">$0</a>");
- }
-
- /**
- * this routine takes text in url format and makes
- * a clickaeble "<href>" link removing any "illegal" html tags
- * @param haystack, the url
- * @param title, the href link text
- * @param imagRoot, the place to find icons
- * @param extImage, the url of the icon to show next to the link
- * @return a String containing the url
- */
- public static String createURLLinks(String haystack, String title, String imageRoot,String extImage) {
- if (title == null) {
- return re_url.substituteAll(haystack,"<img src=\""+imageRoot+"/"+extImage+"\" border=\"0\"/> <a href=\"$0\">$0</a>");
- } else {
- title = removeHTMLTags(title);
- return re_url.substituteAll(haystack,"<img src=\""+imageRoot+"/"+extImage+"\" border=\"0\"/> <a href=\"$0\">"+title+"</a>");
- }
- }
-
- /**
- * this routine takes text in url format and makes
- * a clickaeble "<href>" link removing any "illegal" html tags
- * @param haystack, the url
- * @param imageRoot, the place to find icons
- * @param extImage, the url of the icon to show next to the link
- * @param intImage, unused
- * @return a String containing the url
- */
- public static String createURLLinks(String haystack, String title, String imageRoot,String extImage,String intImage) {
- return createURLLinks(haystack, title, imageRoot, extImage);
- }
-
- /**
- * deleteForbiddenTags
- * this method deletes all <script>, <body> and <head>-tags
- */
- public static final String deleteForbiddenTags(String haystack) {
- try {
- RE regex = new RE("<[ \t\r\n](.*?)script(.*?)/script(.*?)>",RE.REG_ICASE);
- haystack = regex.substituteAll(haystack,"");
- regex = new RE("<head>(.*?)</head>");
- haystack = regex.substituteAll(haystack,"");
- regex = new RE("<[ \t\r\n/]*body(.*?)>");
- haystack = regex.substituteAll(haystack,"");
- return haystack;
- } catch(REException ex){
- return null;
- }
- }
-
- /**
- * this method deletes all html tags
- */
- public static final String removeHTMLTags(String haystack){
- return re_tags.substituteAll(haystack,"");
- }
-
-
- /**
- * this method deletes all but the approved tags html tags
- * it also deletes approved tags which contain malicious-looking attributes and doesn't work at all
- */
- public static String approveHTMLTags(String haystack){
- try {
- String approvedTags="a|img|h1|h2|h3|h4|h5|h6|br|b|i|strong|p";
- String badAttributes="onAbort|onBlur|onChange|onClick|onDblClick|onDragDrop|onError|onFocus|onKeyDown|onKeyPress|onKeyUp|onLoad|onMouseDown|onMouseMove|onMouseOut|onMouseOver|onMouseUp|onMove|onReset|onResize|onSelect|onSubmit|onUnload";
- String approvedProtocols="rtsp|http|ftp|https|freenet|mailto";
-
- // kill all the bad tags that have attributes
- String s = "<\\s*/?\\s*(?!(("+approvedTags+")\\s))\\w+\\s[^>]*>";
- RE regex = new RE(s,RE.REG_ICASE);
- haystack = regex.substituteAll(haystack,"");
-
- // kill all the bad tags that are attributeless
- regex = new RE("<\\s*/?\\s*(?!(("+approvedTags+")\\s*>))\\w+\\s*>",RE.REG_ICASE);
- haystack = regex.substituteAll(haystack,"");
-
- // kill all the tags which have a javascript attribute like onLoad
- regex = new RE("<[^>]*("+badAttributes+")[^>]*>",RE.REG_ICASE);
- haystack = regex.substituteAll(haystack,"");
-
- // kill all the tags which include a url to an unacceptable protocol
- regex = new RE("<\\s*a\\s+[^>]*href=(?!(\'|\")?("+approvedProtocols+"))[^>]*>",RE.REG_ICASE);
- haystack = regex.substituteAll(haystack,"");
-
- return haystack;
- } catch(REException ex){
- ex.printStackTrace();
- return null;
- }
- }
-
-
- /**
- * createHTML ruft alle regex-methoden zum unwandeln eines nicht
- * htmlcodierten string auf und returnt einen htmlcodierten String
- */
- public static String createHTML(String content){
- content=convertNewline2Break(content);
- content=convertNewline2P(content);
- content=createMailLinks(content);
- content=createURLLinks(content);
- return content;
- }
-
-
- /**
- * createHTML ruft alle regex-methoden zum unwandeln eines nicht
- * htmlcodierten string auf und returnt einen htmlcodierten String
- */
- public static String createHTML(String content,String producerDocRoot,String mailImage,String extImage,String intImage){
- content=convertNewline2Break(content);
- content=convertNewline2P(content);
- content=createMailLinks(content,producerDocRoot,mailImage);
- content=createURLLinks(content,null,producerDocRoot,extImage,intImage);
- return content;
- }