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Marco ZeuliMarco Zeuli 

How to wrap long URL when rendering page as PDF

Hi guys,
i want to share with you a solution I come up with, to wrap long url when rendering a VF page.
Basically the problem was this:
A customer pasted a very long URL (more than 400 chars) in a Rich Text Area. When rendering the page as PDF, to print it, the URL overflow the page margin, so it wasn't visible at all.

This is the code i come up with
private String addWhiteSpaceInUrlTooLong(String text) {
        // Step 1 - Search anchor links
        Pattern ptn = Pattern.compile('<a[^>]*(>.*?)</a>'); // WATCH OUT! This regex doesn't match nested anchor
        Matcher mch = ptn.matcher(text);
        Integer charPerLine = 50; // A whitespace is inserted each charPerLine chars
        while (mch.find()) {
            String toReplace = mch.group(1);
            String substitute = '';
            Integer len = toReplace.length();

            if (len < charPerLine) //No need to replace
                continue;

            Integer elems; // White space to insert

            if (len / charPerLine == 0)
                elems = len / charPerLine;
            else
                elems = len / charPerLine + 1;

            // Insert white spaces
            for (Integer i = 1; i <= elems; i++) {
                if ((charPerLine * i) < len)
                    substitute += toReplace.substring(charPerLine * (i - 1), charPerLine * i) + ' ';
                else
                    substitute += toReplace.substring(charPerLine * (i - 1), len) + ' ';
            }

            text = text.replace(toReplace, substitute);            
        }

        // Step 2 - Search pasted links
        ptn = Pattern.compile('\\b\\s(https?://\\S.*?)(\\s|$)');
        mch = ptn.matcher(text);
        charPerLine = 60;

        while(mch.find()) {
            String toReplace = mch.group();
            String substitute = '';
            Integer len = toReplace.length();

            if (len < charPerLine)
                continue;

            Integer elems;

            if (len / charPerLine == 0)
                elems = len / charPerLine;
            else
                elems = len / charPerLine + 1;

            // Insert white spaces
            for (Integer i = 1; i <= elems; i++) {
                if ((charPerLine * i) < len)
                    substitute += toReplace.substring(charPerLine * (i - 1), charPerLine * i) + ' ';
                else
                    substitute += toReplace.substring(charPerLine * (i - 1), len) + ' ';
            }

            text = text.replace(toReplace, substitute);
        }

        return text;
    }

You could use like this:
MyCustomObject.richText = addWhiteSpaceInUrlTooLOng(MyCustomObject.richText);
Hope it will be useful ;)
 
Sagar PareekSagar Pareek
Thanks for sharing mate!
janardhan mjanardhan m
It is very helpful.Thank you
Sisir Kumar 4Sisir Kumar 4
Found this code very useful... :)

But had a same problem for a long text field. And i wrote almost similar code to over come this. thought it would be useful for others so sharing it.
 
public static string insertBreak(String hyperLink) { // hyperLink is the URL
        final Integer linkLength = hyperLink.length();
        final Integer maxLength = 100;
        Integer varCount = (linkLength/maxLength);
        
        if (math.mod(linkLength, maxLength) > 0)
            varCount++;
        
        String fullLink = '';
        integer startValue = 0;
        integer endValue = maxLength;
        for (Integer i = varCount; i >= 0; i--) { 
            fullLink += hyperLink.substring(startValue, endValue) + ' ';
            startValue = endValue;
            endValue = (endValue + maxLength) > linkLength ? linkLength : (endValue + maxLength);
        }
        return fullLink;
    }