+ for (char opening : stacks.keySet())
+ {
+ Stack<Integer> stack = stacks.get(opening);
+ if (!stack.empty())
+ {
+ /*
+ * we have an unmatched opening bracket; report error as at
+ * i (length of input string)
+ */
+ throw new WUSSParseException(MessageManager.formatMessage(
+ "exception.mismatched_opening_char", new String[]
+ { String.valueOf(opening), String.valueOf(stack.pop()) }),
+ i);
+ }
+ }
+ return pairs;
+ }
+
+
+
+
+
+ /**
+ * Function to get the end position corresponding to a given start position
+ *
+ * @param indice
+ * - start position of a base pair
+ * @return - end position of a base pair
+ */
+ /*
+ * makes no sense at the moment :( public int findEnd(int indice){ //TODO:
+ * Probably extend this to find the start to a given end? //could be done by
+ * putting everything twice to the hash ArrayList<Integer> pair = new
+ * ArrayList<Integer>(); return pairHash.get(indice); }
+ */
+
+ /**
+ * Answers true if the character is a recognised symbol for RNA secondary
+ * structure. Currently accepts a-z, A-Z, ()[]{}<>.
+ *
+ * @param c
+ * @return
+ */
+ public static boolean isRnaSecondaryStructureSymbol(char c)
+ {
+ return isOpeningParenthesis(c) || isClosingParenthesis(c);
+ }
+
+ /**
+ * Answers true if the string is a recognised symbol for RNA secondary
+ * structure. Currently accepts a-z, A-Z, ()[]{}<>.
+ *
+ * @param s
+ * @return
+ */
+ public static boolean isRnaSecondaryStructureSymbol(String s)
+ {
+ return isOpeningParenthesis(s) || isClosingParenthesis(s);
+ }
+
+ /**
+ * Translates a string to RNA secondary structure representation. Returns the
+ * string with any non-SS characters changed to spaces. Accepted characters
+ * are a-z, A-Z, and (){}[]<> brackets.
+ *
+ * @param ssString
+ * @return
+ */
+ public static String getRNASecStrucState(String ssString)
+ {
+ if (ssString == null)
+ {
+ return null;
+ }
+ StringBuilder result = new StringBuilder(ssString.length());
+ for (int i = 0; i < ssString.length(); i++)
+ {
+ char c = ssString.charAt(i);
+ result.append(isRnaSecondaryStructureSymbol(c) ? c : " ");
+ }
+ return result.toString();
+ }