ICU 56 update step 1

source/common/ustr_imp.h

 /*  
 **********************************************************************
-*   Copyright (C) 1999-2011, International Business Machines
+*   Copyright (C) 1999-2015, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 **********************************************************************
 *   file name:  ustr_imp.h
 *   encoding:   US-ASCII
 *   tab size:   8 (not used)
 *   indentation:4
 *
 *   created on: 2001jan30
 *   created by: Markus W. Scherer
 */
@@ skipping 42 matching lines @@
  * Compare strings case-insensitively,
  * in code point order or code unit order.
  */
 U_CFUNC int32_t
 u_strcmpFold(const UChar *s1, int32_t length1,
              const UChar *s2, int32_t length2,
              uint32_t options,
              UErrorCode *pErrorCode);
 
 /**
+ * Interanl API, used for detecting length of
+ * shared prefix case-insensitively.
+ * @param s1            input string 1
+ * @param length1       length of string 1, or -1 (NULL terminated)
+ * @param s2            input string 2
+ * @param length2       length of string 2, or -1 (NULL terminated)
+ * @param options       compare options
+ * @param matchLen1     (output) length of partial prefix match in s1
+ * @param matchLen2     (output) length of partial prefix match in s2
+ * @param pErrorCode    receives error status
+ */
+U_CAPI void
+u_caseInsensitivePrefixMatch(const UChar *s1, int32_t length1,
+                             const UChar *s2, int32_t length2,
+                             uint32_t options,
+                             int32_t *matchLen1, int32_t *matchLen2,
+                             UErrorCode *pErrorCode);
+
+/**
  * Are the Unicode properties loaded?
  * This must be used before internal functions are called that do
  * not perform this check.
  * Generate a debug assertion failure if data is not loaded.
  */
 U_CFUNC UBool
 uprv_haveProperties(UErrorCode *pErrorCode);
 
 /**
   * Load the Unicode property data.
@@ skipping 162 matching lines @@
 u_terminateUChar32s(UChar32 *dest, int32_t destCapacity, int32_t length, UErrorCode *pErrorCode);
 
 /**
  * NUL-terminate a wchar_t * string if possible.
  * Same as u_terminateUChars() but for a different string type.
  */
 U_CAPI int32_t U_EXPORT2
 u_terminateWChars(wchar_t *dest, int32_t destCapacity, int32_t length, UErrorCode *pErrorCode);
 
 #endif