/**
* Convenience method to take all of the non-null matching groups in a regex Matcher and return
* them as a concatenated string.
*
* @param matcher The Matcher object from which grouped text will be extracted
* @return A String comprising all of the non-null matched groups concatenated together
*/
public static final String concatGroups(MatcherCompat matcher) {
StringBuilder b = new StringBuilder();
final int numGroups = matcher.groupCount();
for (int i = 1; i <= numGroups; i++) {
String s = matcher.group(i);
if (s != null) {
b.append(s);
}
}
return b.toString();
}
/**
* Convenience method to return only the digits and plus signs in the matching string.
*
* @param matcher The Matcher object from which digits and plus will be extracted
* @return A String comprising all of the digits and plus in the isMatch
*/
public static final String digitsAndPlusOnly(MatcherCompat matcher) {
StringBuilder buffer = new StringBuilder();
String matchingRegion = matcher.group();
for (int i = 0, size = matchingRegion.length(); i < size; i++) {
char character = matchingRegion.charAt(i);
if (character == '+' || Character.isDigit(character)) {
buffer.append(character);
}
}
return buffer.toString();
}