2 * put your module comment here
14 * Statische Hilfsmethoden zur Stringbehandlung
19 public final class StringUtil {
21 private static RE re_newline2br, re_brbr2p, re_mail, re_url, re_tags;
23 private StringUtil() { } // this avoids contruction
28 re_newline2br = new RE("(\r?\n){1}");
29 re_brbr2p = new RE("(<br>\r?\n<br>){1,}");
30 re_mail = new RE("([a-zA-Z0-9_.-]+)@([a-zA-Z0-9_-]+).([a-zA-Z0-9_.-]+)");
31 re_url = new RE("((https://)|(http://)|(ftp://)){1}([a-zA-Z0-9_-]+).([a-zA-Z0-9_.:-]+)/?([^ \t\r\n<>\\)\\]]+[^ \t\r\n.,<>\\)\\]])");
32 re_tags = new RE("<[^>]*>",RE.REG_ICASE);
34 catch (REException e){
35 System.err.println("FATAL: StringUtil: could not precompile REGEX: "+e.toString());
41 * Wandelt Datum in einen 8-ziffrigen String um (yyyymmdd)
43 * @return 8-ziffriger String (yyyymmdd)
46 public static final String date2webdbDate (GregorianCalendar theDate) {
47 StringBuffer webdbDate = new StringBuffer();
48 webdbDate.append(String.valueOf(theDate.get(Calendar.YEAR)));
49 webdbDate.append(pad2(theDate.get(Calendar.MONTH) + 1));
50 webdbDate.append(pad2(theDate.get(Calendar.DATE)));
51 return webdbDate.toString();
55 * Wandelt Calendar in einen 12-ziffrigen String um (yyyymmddhhmm)
57 * @return 12-ziffriger String (yyyymmdd)
60 public static final String date2webdbDateTime (GregorianCalendar theDate) {
61 StringBuffer webdbDate = new StringBuffer();
62 webdbDate.append(String.valueOf(theDate.get(Calendar.YEAR)));
63 webdbDate.append(pad2(theDate.get(Calendar.MONTH) + 1));
64 webdbDate.append(pad2(theDate.get(Calendar.DATE)));
65 webdbDate.append(pad2(theDate.get(Calendar.HOUR)));
66 webdbDate.append(pad2(theDate.get(Calendar.MINUTE)));
67 return webdbDate.toString();
71 * wandelt Calendar in dd.mm.yyyy / hh.mm um
73 * @return String mit (dd.mm.yyyy / hh.mm um)
75 public static String date2readableDateTime (GregorianCalendar theDate) {
78 readable += pad2(theDate.get(Calendar.DATE));
79 readable += "." + pad2(theDate.get(Calendar.MONTH) + 1);
80 readable += "." + String.valueOf(theDate.get(Calendar.YEAR));
81 hour = theDate.get(Calendar.HOUR);
82 if (theDate.get(Calendar.AM_PM) == Calendar.PM)
84 readable += " / " + pad2(hour);
85 readable += ":" + pad2(theDate.get(Calendar.MINUTE));
90 * wandelt eine Datum in einen 8-buchstabigen String, der durch <code>/</code>
94 * @return String mit <code>/yyyy/mm/dd</code>
96 public static final String webdbDate2path (String webdbDate) {
97 StringBuffer path = new StringBuffer();
98 path.append("/").append(webdbDate.substring(0, 4));
99 path.append("/").append(webdbDate.substring(4, 6));
102 //path.append("/").append(webdbDate.substring(6, 8));
103 return path.toString();
107 * wandelt Calendar in dd.mm.yyyy um
110 * @return String mit <code>dd.mm.yyyy</code>
112 public static final String webdbDate2readableDate (String webdbDate) {
114 date += webdbDate.substring(6, 8);
115 date += "." + webdbDate.substring(4, 6);
116 date += "." + webdbDate.substring(0, 4);
122 * converts string from format: yyyy-mm-dd__hh:mm:ss.d
123 * to dd.mm.yyyy hh:mm
125 public static String dateToReadableDate(String date) {
126 StringBuffer returnDate = new StringBuffer();
129 returnDate.append(date.substring(8,10)).append('.');
130 returnDate.append(date.substring(5,7)).append('.');
131 returnDate.append(date.substring(0,4)).append(' ');
132 returnDate.append(date.substring(11,16));
134 return returnDate.toString();
138 * converts string from format: yyyy-mm-dd__hh:mm:ss.d
141 public static String dateToYear (String date) {
142 StringBuffer returnDate = new StringBuffer();
145 returnDate.append(date.substring(0,4));
147 return returnDate.toString();
151 * converts string from format: yyyy-mm-dd__hh:mm:ss.d
154 public static String dateToMonth (String date) {
155 StringBuffer returnDate = new StringBuffer();
157 if (!date.substring(5,6).equalsIgnoreCase("0")) returnDate.append(date.substring(5,7));
158 else returnDate.append(date.substring(6,7));
160 return returnDate.toString();
164 * converts string from format: yyyy-mm-dd__hh:mm:ss.d
167 public static String dateToDayOfMonth (String date) {
168 StringBuffer returnDate = new StringBuffer();
170 if (!date.substring(8,9).equalsIgnoreCase("0")) returnDate.append(date.substring(8,10));
171 else returnDate.append(date.substring(9,10));
173 return returnDate.toString();
177 * converts string from format: yyyy-mm-dd__hh:mm:ss.d
180 public static String dateToTime (String date) {
181 StringBuffer returnDate = new StringBuffer();
183 returnDate.append(date.substring(11,16));
185 return returnDate.toString();
189 * Splits the provided CSV text into a list. stolen wholesale from
190 * from Jakarta Turbine StrinUtils.java -mh
192 * @param text The CSV list of values to split apart.
193 * @param separator The separator character.
194 * @return The list of values.
196 public static String[] split(String text, String separator)
198 StringTokenizer st = new StringTokenizer(text, separator);
199 String[] values = new String[st.countTokens()];
201 while (st.hasMoreTokens())
203 values[pos++] = st.nextToken();
209 * Joins the elements of the provided array into a single string
210 * containing a list of CSV elements. Stolen wholesale from Jakarta
211 * Turbine StringUtils.java. -mh
213 * @param list The list of values to join together.
214 * @param separator The separator character.
215 * @return The CSV text.
217 public static String join(String[] list, String separator)
219 StringBuffer csv = new StringBuffer();
220 for (int i = 0; i < list.length; i++)
224 csv.append(separator);
228 return csv.toString();
233 * schließt einen String in Anführungsszeichen ein, falls er Leerzeichen o.ä. enthält
235 * @return gequoteter String
237 public static String quoteIfNecessary(String s) {
238 for (int i = 0; i < s.length(); i++)
239 if (!(Character.isLetterOrDigit(s.charAt(i)) || s.charAt(i) == '.'))
240 return quote(s, '"');
245 * schließt <code>s</code> in <code>'</code> ein und setzt Backslashes vor
246 * "gefährliche" Zeichen innerhalb des Strings
247 * Quotes special SQL-characters in <code>s</code>
249 * @return geqoteter String
251 public static String quote(String s)
253 //String s2 = quote(s, '\'');
256 //Because of '?-Bug in Postgresql-JDBC-Driver
257 StringBuffer temp = new StringBuffer();
258 for(int i=0;i<s.length();i++){
259 if(s.charAt(i)=='\''){
260 temp.append("´");
262 temp.append(s.charAt(i));
265 String s2 = temp.toString();
268 s2 = quote(s2, '\"');
273 * schließt <code>s</code> in <code>'</code> ein und setzt Backslashes vor
274 * "gefährliche" Zeichen innerhalb des Strings
276 * @param s String, der gequoted werden soll
277 * @param quoteChar zu quotendes Zeichen
278 * @return gequoteter String
280 public static String quote(String s, char quoteChar)
282 StringBuffer buf = new StringBuffer(s.length());
284 while (pos < s.length()) {
285 int i = s.indexOf(quoteChar, pos);
286 if (i < 0) i = s.length();
287 buf.append(s.substring(pos, i));
289 if (pos < s.length()) {
291 buf.append(quoteChar);
295 return buf.toString();
299 * replaces dangerous characters in <code>s</code>
303 public static String unquote(String s)
306 StringBuffer buf = new StringBuffer(s.length());
308 String searchString = "\\"+quoteChar;
309 while (pos < s.length()) {
310 int i = s.indexOf(searchString, pos);
311 if (i < 0) i = s.length();
312 buf.append(s.substring(pos, i));
315 return buf.toString();
319 * Wandelet String in byte[] um.
321 * @return byte[] des String
324 public static byte[] stringToBytes(String s) {
325 String crlf = System.getProperty("line.separator");
326 if (!crlf.equals("\n"))
327 s = replace(s, "\n", crlf);
328 // byte[] buf = new byte[s.length()];
329 byte[] buf = s.getBytes();
334 * Ersetzt in String <code>s</code> das <code>pattern</code> durch <code>substitute</code>
338 * @return String mit den Ersetzungen
340 public static String replace(String s, String pattern, String substitute) {
341 int i = 0, pLen = pattern.length(), sLen = substitute.length();
342 StringBuffer buf = new StringBuffer(s.length());
344 int j = s.indexOf(pattern, i);
346 buf.append(s.substring(i));
349 buf.append(s.substring(i, j));
350 buf.append(substitute);
354 return buf.toString();
358 * Ersetzt in String <code>s</code> das Regexp <code>pattern</code> durch <code>substitute</code>
362 * @return String mit den Ersetzungen
364 public static String regexpReplace(String haystack, String pattern, String substitute) {
366 RE regex = new RE(pattern);
367 return regex.substituteAll(haystack,substitute);
368 } catch(REException ex){
377 * Fügt einen Separator an den Pfad an
379 * @return Pfad mit Separator am Ende
381 public static final String addSeparator (String path) {
382 return path.length() == 0 || path.endsWith(File.separator) ? path : path
383 + File.separatorChar;
387 * Fügt ein <code>/</code> ans ende des Strings and
389 * @return Pfad mit <code>/</code> am Ende
391 public static final String addSlash (String path) {
392 return path.length() == 0 || path.endsWith("/") ? path : path + '/';
396 * Löscht <code>/</code> am Ende des Strings, falls vorhanden
398 * @return String ohne <code>/</code> am Ende
400 public static final String removeSlash (String path) {
401 return path.length() > 1 && path.endsWith("/") ? path.substring(0, path.length()
406 * Checks to see if the path is absolute by looking for a leading file
411 public static boolean isAbsolutePath (String path) {
412 return path.startsWith(File.separator);
416 * Löscht Slash am Anfang des Strings
420 public static String removeFirstSlash (String path) {
421 return path.startsWith("/") ? path.substring(1) : path;
425 * formatiert eine Zahl (0-99) zweistellig (z.B. 5 -> 05)
426 * @return zwistellige Zahl
428 public static String pad2 (int number) {
429 return number < 10 ? "0" + number : String.valueOf(number);
433 * formatiert eine Zahl (0-999) dreistellig (z.B. 7 -> 007)
435 * @return 3-stellige Zahl
437 public static String pad3 (int number) {
438 return number < 10 ? "00" + number : number < 100 ? "0" + number : String.valueOf(number);
442 * Konvertiert Unix-Linefeeds in Win-Linefeeds
444 * @return Konvertierter String
446 public static String unixLineFeedsToWin(String s) {
449 i = s.indexOf('\n', i+1);
451 if ((i == 0 || s.charAt(i-1) != '\r') &&
452 (i == s.length()-1 || s.charAt(i+1) != '\r')) {
453 s = s.substring(0, i)+'\r'+s.substring(i);
462 * verwandelt einen String in eine gültige Url, konvertiert Sonderzeichen
463 * und Spaces werden zu Underscores
465 * @return gültige Url
467 public static String convert2url(String s) {
469 StringBuffer buf = new StringBuffer();
470 for(int i = 0; i < s.length(); i++ ) {
471 switch( s.charAt( i ) ) {
473 buf.append( "oe" ); break;
475 buf.append( "ae" ); break;
477 buf.append( "ue" ); break;
479 buf.append( "a" ); break;
482 buf.append( "_" ); break;
484 if( buf.charAt( buf.length() - 1 ) != '_' ) {
489 buf.append( s.charAt( i ) );
492 return buf.toString();
496 * wandelt Sonderzeichen in Quotes um
498 * @return Kovertierter String
500 public static String encodeHtml(String s) {
501 StringBuffer buf = new StringBuffer();
502 for(int i=0;i < s.length(); i++ ) {
504 /** @todo looks inefficient, to ask for index of every char, in
505 * case of failure it runs to the end.*/
506 if (s.charAt(i)=='&') {
507 // convert html to xml-parsable representation
508 if( s.indexOf( "ö", i ) == i ) {
509 buf.append( "ö" ); i += 5;
512 if( s.indexOf( "ä", i ) == i ) {
513 buf.append( "ä" ); i += 5;
516 if( s.indexOf( "ü", i ) == i ) {
517 buf.append( "ü" ); i += 5;
520 if( s.indexOf( "Ö", i ) == i ) {
521 buf.append( "Ö" ); i += 5;
524 if( s.indexOf( "Ä", i ) == i ) {
525 buf.append( "Ä" ); i += 5;
528 if( s.indexOf( "Ü", i ) == i ) {
529 buf.append( "Ü" ); i += 5;
532 if( s.indexOf( "ß", i ) == i ) {
533 buf.append( "ß" ); i += 6;
537 /** @todo should only escape outside of tags */
539 if( s.indexOf( """, i ) == i ) {
540 buf.append( "ß" ); i += 5;
543 if( s.indexOf( "–", i ) == i ) {
544 buf.append( "–" ); i += 6;
547 if( s.indexOf( "—", i ) == i ) {
548 buf.append( "—" ); i += 6;
551 if( s.indexOf( "“", i ) == i ) {
552 buf.append( "“" ); i += 6;
555 if( s.indexOf( "”", i ) == i ) {
556 buf.append( "”" ); i += 6;
559 if( s.indexOf( "„", i ) == i ) {
560 buf.append( "„" ); i += 6;
564 //looks pretty stupid
565 if( s.indexOf( "<", i ) == i ) {
566 buf.append( "<" ); i += 3;
569 if( s.indexOf( ">", i ) == i ) {
570 buf.append( ">" ); i += 3;
573 if( s.indexOf( "´", i ) == i ) {
574 buf.append( "´" ); i += 6;
577 if( s.indexOf( " ", i ) == i ) {
578 buf.append( " " ); i += 5;
582 //if( s.indexOf( "&", i ) == i ) {
583 // buf.append( "&" ); i += 0;
587 // convert umlauts an other special charakters
588 switch( s.charAt(i) ) {
589 case 'ö': buf.append( "ö" ); break;
590 case 'ä': buf.append( "ä" ); break;
591 case 'ü': buf.append( "ü" ); break;
592 case 'Ö': buf.append( "Ö" ); break;
593 case 'Ä': buf.append( "Ä" ); break;
594 case 'Ü': buf.append( "Ü" ); break;
595 case 'ß': buf.append( "ß" ); break;
596 case 'é': buf.append( "é" ); break;
597 case 'è': buf.append( "è" ); break;
598 case 'á': buf.append( "á" ); break;
599 case 'à': buf.append( "à" ); break;
600 case 'â': buf.append( "â" ); break;
601 case 'ã': buf.append( "ã" ); break;
602 case '¬': buf.append( "¬" ); break;
603 case '¹': buf.append( "¹" ); break;
604 case '²': buf.append( "²" ); break;
605 case '³': buf.append( "³" ); break;
606 case '¼': buf.append( "¼" ); break;
607 case '½': buf.append( "½" ); break;
608 case '¾': buf.append( "¾" ); break;
609 case '¶': buf.append( "¶" ); break;
610 case 'æ': buf.append( "æ" ); break;
611 case 'ð': buf.append( "ð" ); break;
612 case '|': buf.append( "¦" ); break;
613 case '·': buf.append( "·" ); break;
614 case '°': buf.append( "°" ); break;
615 case '§': buf.append( "§" ); break;
616 case 'ø': buf.append( "ø" ); break;
617 case 'ç': buf.append( "ç" ); break;
618 case '¤': buf.append( "¤" ); break;
619 case 'ª': buf.append( "ª" ); break;
620 case 'Ç': buf.append( "Ç" ); break;
621 case 'Ã': buf.append( "Ã" ); break;
622 case 'Â': buf.append( "Â" ); break;
623 case 'Æ': buf.append( "Æ" ); break;
624 case '©': buf.append( "©" ); break;
625 case '®': buf.append( "®" ); break;
626 case '¥': buf.append( "¥" ); break;
627 case 'Þ': buf.append( "þ" ); break;
628 case '¯': buf.append( "¯" ); break;
629 case 'Ð': buf.append( "Ð" ); break;
630 case 'º': buf.append( "º" ); break;
631 case '¡': buf.append( "¡" ); break;
632 case '£': buf.append( "£" ); break;
633 case '±': buf.append( "±" ); break;
634 case '¿': buf.append( "¿" ); break;
635 case 'Ø': buf.append( "Ø" ); break;
636 case 'Á': buf.append( "À" ); break;
637 case 'À': buf.append( "Á" ); break;
638 case 'É': buf.append( "È" ); break;
639 case 'È': buf.append( "É" ); break;
640 case 'ù': buf.append( "ú" ); break;
641 case 'ñ': buf.append( "ñ" ); break;
642 case 'Ñ': buf.append( "Ñ" ); break;
643 case 'µ': buf.append( "µ" ); break;
644 case 'Í': buf.append( "Ì" ); break;
645 case 'Ì': buf.append( "Í" ); break;
646 case 'í': buf.append( "ì" ); break;
647 case 'ì': buf.append( "í" ); break;
648 case 'î': buf.append( "î" ); break;
649 case 'Î': buf.append( "Î" ); break;
650 case 'ó': buf.append( "ó" ); break;
651 case 'Ó': buf.append( "Ò" ); break;
652 case 'ò': buf.append( "Î" ); break;
653 case 'Ò': buf.append( "Ó" ); break;
654 case 'ô': buf.append( "ô" ); break;
655 case 'Ô': buf.append( "Ô" ); break;
656 case 'õ': buf.append( "õ" ); break;
657 case 'Õ': buf.append( "Õ" ); break;
658 case 'ý': buf.append( "ý" ); break;
659 case 'Ý': buf.append( "Ý" ); break;
660 case 'û': buf.append( "û" ); break;
661 case 'Û': buf.append( "Û" ); break;
662 case 'ú': buf.append( "ù" ); break;
663 case 'Ú': buf.append( "Ù" ); break;
664 case 'Ù': buf.append( "Ú" ); break;
665 case 'Ê': buf.append( "Ê" ); break;
666 case 'ê': buf.append( "ê" ); break;
667 case 'å': buf.append( "å" ); break;
668 case 'Å': buf.append( "Å" ); break;
669 case 'ë': buf.append( "ë" ); break;
670 case 'Ë': buf.append( "Ë" ); break;
671 case 'ÿ': buf.append( "ÿ" ); break;
672 case 'ï': buf.append( "ï" ); break;
673 case 'Ï': buf.append( "Ï" ); break;
674 case '«': buf.append( "«" ); break;
675 case '»': buf.append( "»" ); break;
676 case '\'': buf.append( "´" ); break;
677 case '\"': buf.append( """ ); break;
678 //case '\u8211': buf.append( "–" ); break;
679 //case '\u8212': buf.append( "—" ); break;
680 //case '\u8220': buf.append( "“" ); break;
681 //case '\u8221': buf.append( "”" ); break;
682 //case '\u8222': buf.append( "„" ); break;
683 //case '\"': buf.append( """ ); break;
684 default: buf.append( s.charAt(i) );
688 return buf.toString();
692 public static String decodeHTMLinTags(String s){
693 StringBuffer buffer = new StringBuffer();
694 boolean start = false;
695 boolean stop = false;
700 for(int i=0;i<s.length();i++){
701 if(s.charAt(i)=='<'){
704 } else if(s.charAt(i)=='>'){
709 buffer.append(s.substring(temp,startIndex));
710 buffer.append(replaceQuot(s.substring(startIndex,stopIndex+1)));
711 i= temp= stopIndex+1;
717 buffer.append(s.substring(stopIndex+1));
718 return buffer.toString();
724 public static String replaceQuot(String s) {
725 StringBuffer buffer = new StringBuffer();
726 for(int j = 0; j < s.length();j++){
727 if(s.charAt(j)=='&'){
728 if(s.indexOf( """,j) == j) {
729 buffer.append( "\"" );
733 buffer.append(s.charAt(j));
736 return buffer.toString();
739 /** wandelt Quotes in Sonderzeichen um
742 public static String decodeHtml(String s) {
743 StringBuffer buf = new StringBuffer();
744 for(int i=0;i < s.length(); i++ ) {
745 if( s.indexOf( "ö", i ) == i ) {
746 buf.append( "ö" ); i += 5;
749 if( s.indexOf( "ä", i ) == i ) {
750 buf.append( "ä" ); i += 5;
753 if( s.indexOf( "ü", i ) == i ) {
754 buf.append( "ü" ); i += 5;
757 if( s.indexOf( "Ö", i ) == i ) {
758 buf.append( "Ö" ); i += 5;
761 if( s.indexOf( "Ä", i ) == i ) {
762 buf.append( "Ä" ); i += 5;
765 if( s.indexOf( "Ü", i ) == i ) {
766 buf.append( "Ü" ); i += 5;
769 if( s.indexOf( "ß", i ) == i ) {
770 buf.append( "ß" ); i += 6;
773 if( s.indexOf( """, i ) == i ) {
774 buf.append( "\"" ); i += 5;
777 buf.append( s.charAt(i) );
779 return buf.toString();
784 * schnellere Variante der String.toLowerCase()-Routine
786 * @return String in Kleinbuchsten
788 public static String toLowerCase(String s) {
790 char[] a = new char[l];
791 for (int i = 0; i < l; i++)
792 a[i] = Character.toLowerCase(s.charAt(i));
793 return new String(a);
797 * Findet <code>element</code> im String-Array <code>array</code>
800 * @return Fundstelle als int oder -1
802 public static int indexOf(String[] array, String element) {
804 for (int i = 0; i < array.length; i++)
805 if (array[i].equals(element))
811 * Testet auf Vorkommen von <code>element</code> in <code>array</code>
812 * @param array String-Array
814 * @return true wenn <code>element</code> vorkommt, sonst false
816 public static boolean contains(String[] array, String element) {
817 return indexOf(array, element) >= 0;
821 * Ermittelt CRC-Prüfsumme von String <code>s</code>
823 * @return CRC-Prüfsumme
825 public static int getCRC(String s) {
827 char val[] = s.toCharArray();
828 int len = val.length;
830 for (int i = 0 ; i < len; i++) {
832 h = (((h >> 30) | (h << 1)) ^ (val[i]+i));
835 return (h << 8) | (len & 0xff);
839 * Liefert Default-Wert def zurück, wenn String <code>s</code>
844 * @return geparster int aus s oder def
846 public static int parseInt(String s, int def) {
847 if (s == null) return def;
849 return Integer.parseInt(s);
850 } catch (NumberFormatException e) {
856 * Liefert Defaultwert def zurück, wenn s nicht zu einem float geparsed werden kann.
859 * @return geparster float oder def
861 public static float parseFloat(String s, float def) {
862 if (s == null) return def;
864 return new Float(s).floatValue();
865 } catch (NumberFormatException e) {
871 * Findet Ende eines Satzes in String <code>text</code>
874 * @return index des Satzendes, oder -1
876 public static int findEndOfSentence(String text, int startIndex) {
878 int i = text.indexOf('.', startIndex);
879 if (i < 0) return -1;
880 if (i > 0 && !Character.isDigit(text.charAt(i-1)) &&
881 (i+1 >= text.length()
882 || text.charAt(i+1) == ' '
883 || text.charAt(i+1) == '\n'
884 || text.charAt(i+1) == '\t'))
891 * Findet Wortende in String <code>text</code> ab <code>startIndex</code>
894 * @return Index des Wortendes, oder -1
896 public static int findEndOfWord(String text, int startIndex) {
897 int i = text.indexOf(' ', startIndex),
898 j = text.indexOf('\n', startIndex);
899 if (i < 0) i = text.length();
900 if (j < 0) j = text.length();
901 return Math.min(i, j);
906 * convertNewline2P ist eine regex-routine zum umwandeln von 2 oder mehr newlines (\n)
907 * in den html-tag <p>
908 * nur sinnvoll, wenn text nicht im html-format eingegeben
910 public static String convertNewline2P(String haystack) {
911 return re_brbr2p.substituteAll(haystack,"\n</p><p>");
915 * convertNewline2Break ist eine regex-routine zum umwandeln von 1 newline (\n)
916 * in den html-tag <br>
917 * nur sinnvoll, wenn text nicht im html-format eingegeben
919 public static String convertNewline2Break(String haystack) {
920 return re_newline2br.substituteAll(haystack,"$0<br />");
924 * createMailLinks wandelt text im email-adressenformat
925 * in einen klickbaren link um
926 * nur sinnvoll, wenn text nicht im html-format eingegeben
928 public static String createMailLinks(String haystack) {
929 return re_mail.substituteAll(haystack,"<a href=\"mailto:$0\">$0</a>");
934 * createMailLinks wandelt text im email-adressenformat
935 * in einen klickbaren link um
936 * nur sinnvoll, wenn text nicht im html-format eingegeben
938 public static String createMailLinks(String haystack, String imageRoot, String mailImage) {
939 return re_mail.substituteAll(haystack,"<img src=\""+imageRoot+"/"+mailImage+"\" border=\"0\"/> <a href=\"mailto:$0\">$0</a>");
944 * createURLLinks wandelt text im url-format
945 * in einen klickbaren link um
946 * nur sinnvoll, wenn text nicht im html-format eingegeben
948 public static String createURLLinks(String haystack) {
949 return re_url.substituteAll(haystack,"<a href=\"$0\">$0</a>");
953 * this routine takes text in url format and makes
954 * a clickaeble "<href>" link removing any "illegal" html tags
955 * @param haystack, the url
956 * @param title, the href link text
957 * @param imagRoot, the place to find icons
958 * @param extImage, the url of the icon to show next to the link
959 * @return a String containing the url
961 public static String createURLLinks(String haystack, String title, String imageRoot,String extImage) {
963 return re_url.substituteAll(haystack,"<img src=\""+imageRoot+"/"+extImage+"\" border=\"0\"/> <a href=\"$0\">$0</a>");
965 title = removeHTMLTags(title);
966 return re_url.substituteAll(haystack,"<img src=\""+imageRoot+"/"+extImage+"\" border=\"0\"/> <a href=\"$0\">"+title+"</a>");
971 * this routine takes text in url format and makes
972 * a clickaeble "<href>" link removing any "illegal" html tags
973 * @param haystack, the url
974 * @param imageRoot, the place to find icons
975 * @param extImage, the url of the icon to show next to the link
976 * @param intImage, unused
977 * @return a String containing the url
979 public static String createURLLinks(String haystack, String title, String imageRoot,String extImage,String intImage) {
980 return createURLLinks(haystack, title, imageRoot, extImage);
984 * deleteForbiddenTags
985 * this method deletes all <script>, <body> and <head>-tags
987 public static final String deleteForbiddenTags(String haystack) {
989 RE regex = new RE("<[ \t\r\n](.*?)script(.*?)/script(.*?)>",RE.REG_ICASE);
990 haystack = regex.substituteAll(haystack,"");
991 regex = new RE("<head>(.*?)</head>");
992 haystack = regex.substituteAll(haystack,"");
993 regex = new RE("<[ \t\r\n/]*body(.*?)>");
994 haystack = regex.substituteAll(haystack,"");
996 } catch(REException ex){
1002 * this method deletes all html tags
1004 public static final String removeHTMLTags(String haystack){
1005 return re_tags.substituteAll(haystack,"");
1010 * this method deletes all but the approved tags html tags
1011 * it also deletes approved tags which contain malicious-looking attributes and doesn't work at all
1013 public static String approveHTMLTags(String haystack){
1015 String approvedTags="a|img|h1|h2|h3|h4|h5|h6|br|b|i|strong|p";
1016 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";
1017 String approvedProtocols="rtsp|http|ftp|https|freenet|mailto";
1019 // kill all the bad tags that have attributes
1020 String s = "<\\s*/?\\s*(?!(("+approvedTags+")\\s))\\w+\\s[^>]*>";
1021 RE regex = new RE(s,RE.REG_ICASE);
1022 haystack = regex.substituteAll(haystack,"");
1024 // kill all the bad tags that are attributeless
1025 regex = new RE("<\\s*/?\\s*(?!(("+approvedTags+")\\s*>))\\w+\\s*>",RE.REG_ICASE);
1026 haystack = regex.substituteAll(haystack,"");
1028 // kill all the tags which have a javascript attribute like onLoad
1029 regex = new RE("<[^>]*("+badAttributes+")[^>]*>",RE.REG_ICASE);
1030 haystack = regex.substituteAll(haystack,"");
1032 // kill all the tags which include a url to an unacceptable protocol
1033 regex = new RE("<\\s*a\\s+[^>]*href=(?!(\'|\")?("+approvedProtocols+"))[^>]*>",RE.REG_ICASE);
1034 haystack = regex.substituteAll(haystack,"");
1037 } catch(REException ex){
1038 ex.printStackTrace();
1045 * createHTML ruft alle regex-methoden zum unwandeln eines nicht
1046 * htmlcodierten string auf und returnt einen htmlcodierten String
1048 public static String createHTML(String content){
1049 content=convertNewline2Break(content);
1050 content=convertNewline2P(content);
1051 content=createMailLinks(content);
1052 content=createURLLinks(content);
1058 * createHTML ruft alle regex-methoden zum unwandeln eines nicht
1059 * htmlcodierten string auf und returnt einen htmlcodierten String
1061 public static String createHTML(String content,String producerDocRoot,String mailImage,String extImage,String intImage){
1062 content=convertNewline2Break(content);
1063 content=convertNewline2P(content);
1064 content=createMailLinks(content,producerDocRoot,mailImage);
1065 content=createURLLinks(content,null,producerDocRoot,extImage,intImage);