Sets regular font face for regex matches and light one for rest

TextUtils.java

    private Spannable setLightHeaderText(String text, String regexPattern) {
        final Pattern regPattern =  Pattern.compile(regexPattern);
        final Matcher matches = regPattern.matcher(text);
        final Spannable spannable = new SpannableString(text);

        // right now we use first only occurrence if exist
        if (!matches.find()) {
            final CustomTypeFaceSpan lightSpanStart = new CustomTypeFaceSpan("roboto-light");
            spannable.setSpan(lightSpanStart, 0, text.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
            return spannable;
        }

        spannable.setSpan(new CustomTypeFaceSpan("roboto-light"), 0, text.length(), Spanned.SPAN_COMPOSING);

        do {
            int start = matches.start();
            int end = matches.end();
            final CustomTypeFaceSpan regularSpan= new CustomTypeFaceSpan("roboto-regular");
            spannable.setSpan(regularSpan, start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
        } while (matches.find());

        return spannable;
    }