/*
- * Jalview - A Sequence Alignment Editor and Viewer (Version 2.9)
- * Copyright (C) 2015 The Jalview Authors
+ * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
+ * Copyright (C) $$Year-Rel$$ The Jalview Authors
*
* This file is part of Jalview.
*
}
return "" + separator;
}
+
+ /**
+ * Converts a list to a string with a delimiter before each term except the
+ * first. Returns an empty string given a null or zero-length argument. This
+ * can be replaced with StringJoiner in Java 8.
+ *
+ * @param terms
+ * @param delim
+ * @return
+ */
+ public static String listToDelimitedString(List<String> terms,
+ String delim)
+ {
+ StringBuilder sb = new StringBuilder(32);
+ if (terms != null && !terms.isEmpty())
+ {
+ boolean appended = false;
+ for (String term : terms)
+ {
+ if (appended)
+ {
+ sb.append(delim);
+ }
+ appended = true;
+ sb.append(term);
+ }
+ }
+ return sb.toString();
+ }
+
+ /**
+ * Convenience method to parse a string to an integer, returning 0 if the
+ * input is null or not a valid integer
+ *
+ * @param s
+ * @return
+ */
+ public static int parseInt(String s)
+ {
+ int result = 0;
+ if (s != null && s.length() > 0)
+ {
+ try
+ {
+ result = Integer.parseInt(s);
+ } catch (NumberFormatException ex)
+ {
+ }
+ }
+ return result;
+ }
+
+ /**
+ * Compares two versions formatted as e.g. "3.4.5" and returns -1, 0 or 1 as
+ * the first version precedes, is equal to, or follows the second
+ *
+ * @param v1
+ * @param v2
+ * @return
+ */
+ public static int compareVersions(String v1, String v2)
+ {
+ return compareVersions(v1, v2, null);
+ }
+
+ /**
+ * Compares two versions formatted as e.g. "3.4.5b1" and returns -1, 0 or 1 as
+ * the first version precedes, is equal to, or follows the second
+ *
+ * @param v1
+ * @param v2
+ * @param pointSeparator
+ * a string used to delimit point increments in sub-tokens of the
+ * version
+ * @return
+ */
+ public static int compareVersions(String v1, String v2,
+ String pointSeparator)
+ {
+ if (v1 == null || v2 == null)
+ {
+ return 0;
+ }
+ String[] toks1 = v1.split("\\.");
+ String[] toks2 = v2.split("\\.");
+ int i = 0;
+ for (; i < toks1.length; i++)
+ {
+ if (i >= toks2.length)
+ {
+ /*
+ * extra tokens in v1
+ */
+ return 1;
+ }
+ String tok1 = toks1[i];
+ String tok2 = toks2[i];
+ if (pointSeparator != null)
+ {
+ /*
+ * convert e.g. 5b2 into decimal 5.2 for comparison purposes
+ */
+ tok1 = tok1.replace(pointSeparator, ".");
+ tok2 = tok2.replace(pointSeparator, ".");
+ }
+ try
+ {
+ float f1 = Float.valueOf(tok1);
+ float f2 = Float.valueOf(tok2);
+ int comp = Float.compare(f1, f2);
+ if (comp != 0)
+ {
+ return comp;
+ }
+ } catch (NumberFormatException e)
+ {
+ System.err.println("Invalid version format found: "
+ + e.getMessage());
+ return 0;
+ }
+ }
+
+ if (i < toks2.length)
+ {
+ /*
+ * extra tokens in v2
+ */
+ return -1;
+ }
+
+ /*
+ * same length, all tokens match
+ */
+ return 0;
+ }
+
+ /**
+ * Converts the string to all lower-case except the first character which is
+ * upper-cased
+ *
+ * @param s
+ * @return
+ */
+ public static String toSentenceCase(String s)
+ {
+ if (s == null)
+ {
+ return s;
+ }
+ if (s.length() <= 1)
+ {
+ return s.toUpperCase();
+ }
+ return s.substring(0, 1).toUpperCase() + s.substring(1).toLowerCase();
+ }
}