Hello all,
building my websites guestbook, i figured out that somebody entered a
big string (exactly: an URL). This blew up my complete layout. HTML
doesn't give any solution on this, you simply can't break up this stupid
long string.
Looking at commons lang i found a lot of join/split-operations, but it
seems that never anybody needed something of a "separate after 20
characters with a blank"-function. Well, i am not sure if ever somebody
REALLY needs this besides me, but you'll never know. So i decided to let
take you a look at my method (attached).
OK, i know it's not the very best method in the world (at least it
midnight and i was at a whiskey tasting this evening), but if somebody
thinks it could be useful to be included in
org.apache.commons.lang.StringUtils i will improve it and would be glad
to contribute "interrupt()" to you. If somebody has a better idea than
this, your comments are welcome.
Let me know.
Having said this, good night.
- Chris
/**
* Interrupts the string text after the max number of characters
* with the given seperator. Before this operation is beeing done, a split
* operation with the seperator is beeing fullfilled. This means that seperator
* is beeing trimmed from the beginning and the end of the string.
*
* @param text - the String which has to be interrupted
* @param seperator - the seperator to interrupt with
* @param max - maximal occurencies of other characters before the string is
beeing interrupted
* @return the interrupted string, null if the text is null
*/
public static String interrupt(String text, String seperator, int max) {
if(text==null) {
return null;
}
if(seperator == null) {
seperator = " ";
}
String[] array = StringUtils.split(text, seperator);
StringBuffer result = new StringBuffer();
for(int i=0; i < array.length; i++) {
String value = array[i];
if(i > 0) {
result.append(seperator);
}
int length = value.length();
if(length > max ) {
int pieces = length / max;
float mod = length % max;
if(mod>0) {
pieces++;
}
int c = 0;
while( c < pieces ) {
if(c>0) {
result.append(seperator);
}
result.append(StringUtils.mid(value, c*max,
max));
c++;
}
} else {
result.append(value);
}
}
return result.toString();
}
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