UDF: countHtmlLineBreaks() - return the number of BR tags in a string
ColdFusionWhenever I end up creating some fairly generic little UDF, I usually try to put up here in case some random person somewhere happens to find them useful. Inevitably, I always get *that guy* who gives me grief for doing so and tells me how I should have done it better or how I should have used Xyz() udf instead, but what the heck... here is another one.
I had a need this morning to be able to set the height of a div that contained an unordered list of strings based on the text it contained. I created an algorithm that was basically Ceiling(Len(string)/CharactersPerLine) for each item in the list and then determined the pixel height based on number of lines, but run into an issue where the text could contain
tags. I needed a method for counting BR tags, and it should be able to find BR tags with any number of spaces and with or without a closing slash. This is what I came up with.
In case the code above isn't, here it is again:
function countHtmlLineBreaks(String) {
var Count = 0;
while (ReFindNoCase("<\s*br\s*/?\s*>",arguments.String)) {
Count = Count + 1;
arguments.String = ReReplaceNoCase(String,"<\s*br\s*/?\s*>","","one");
}
return Count;
}
<\s*br\s*/?\s*>
Any space is detected and the parentheses are unnecessary. Because nothing is captured, the latter change might, just might, give you a very small performance gain.
Just wanted to make sure your streak held. :-)
That guy strikes again. The problem with being "that guy" is those times when you have a typo in your "better" solution. Or, in one of those Southwest "Want to get away" moments, when you're not as smart as you think you are and your solution doesn't actually work. Doh!
@todd:
I used to feel that way too, but now that I've become pretty proficient with them I think they're the greatest development tool *ever*. Seriously. I use them for damn near everything. I agree, however, that they're badly misnamed. :-)
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