in appactive-java-api/src/main/java/io/appactive/java/api/utils/lang/StringUtils.java [141:153]
public static boolean containsIgnoreCase(final CharSequence str, final CharSequence searchStr) {
if (str == null || searchStr == null) {
return false;
}
final int len = searchStr.length();
final int max = str.length() - len;
for (int i = 0; i <= max; i++) {
if (CharSequenceUtils.regionMatches(str, true, i, searchStr, 0, len)) {
return true;
}
}
return false;
}