ICU-6064 Make UnicodeSet::closeOver() public

X-SVN-Rev: 25560

icu4c/source/common/unicode/uniset.h

@@ -1293,7 +1293,7 @@ public:
      * Currently only the USET_CASE bit is supported.  Any undefined bits
      * are ignored.
      * @return a reference to this set.
-     * @internal
+     * @draft ICU 4.2
      */
     UnicodeSet& closeOver(int32_t attribute);
 

icu4c/source/common/unicode/uset.h

@@ -687,6 +687,35 @@ uset_complementAll(USet* set, const USet* complement);
 U_STABLE void U_EXPORT2
 uset_clear(USet* set);
 
+/**
+ * Close this set over the given attribute.  For the attribute
+ * USET_CASE, the result is to modify this set so that:
+ *
+ * 1. For each character or string 'a' in this set, all strings or
+ * characters 'b' such that foldCase(a) == foldCase(b) are added
+ * to this set.
+ *
+ * 2. For each string 'e' in the resulting set, if e !=
+ * foldCase(e), 'e' will be removed.
+ *
+ * Example: [aq\\u00DF{Bc}{bC}{Fi}] => [aAqQ\\u00DF\\uFB01{ss}{bc}{fi}]
+ *
+ * (Here foldCase(x) refers to the operation u_strFoldCase, and a
+ * == b denotes that the contents are the same, not pointer
+ * comparison.)
+ *
+ * A frozen set will not be modified.
+ *
+ * @param set the set
+ *
+ * @param attribute bitmask for attributes to close over.
+ * Currently only the USET_CASE bit is supported.  Any undefined bits
+ * are ignored.
+ * @draft ICU 4.2
+ */
+U_DRAFT void U_EXPORT2
+uset_closeOver(USet* set, int32_t attributes);
+
 /**
  * Remove all strings from this set.
  *

icu4c/source/common/uset.cpp

@@ -149,6 +149,11 @@ uset_clear(USet* set) {
     ((UnicodeSet*) set)->UnicodeSet::clear();
 }
 
+U_CAPI void U_EXPORT2
+uset_closeOver(USet* set, int32_t attributes) {
+    ((UnicodeSet*) set)->UnicodeSet::closeOver(attributes);
+}
+
 U_CAPI void U_EXPORT2
 uset_removeAllStrings(USet* set) {
     ((UnicodeSet*) set)->UnicodeSet::removeAllStrings();