Move main YAZ manual to book.xml; use nxml YAZ-758

[yaz-moved-to-github.git] / src / icu_sortkey.c

diff --git a/src/icu_sortkey.c b/src/icu_sortkey.c
index 8fed394..ceffa59 100644 (file)
--- a/src/icu_sortkey.c
+++ b/src/icu_sortkey.c
@@ -1,5 +1,5 @@
 /* This file is part of the YAZ toolkit.
- * Copyright (C) 1995-2011 Index Data
+ * Copyright (C) Index Data
  * See the file LICENSE for details.
  */
 
@@ -27,17 +27,20 @@
 #include <unicode/uchar.h>    /* char names           */
 
 void icu_sortkey8_from_utf16(UCollator *coll,
-                             struct icu_buf_utf8 * dest8, 
-                             struct icu_buf_utf16 * src16,
+                             struct icu_buf_utf8 *dest8,
+                             struct icu_buf_utf16 *src16,
                              UErrorCode * status)
-{ 
+{
     int32_t sortkey_len = 0;
+    /* we'll fake a capacity of one less, because it turns out
+       that ucol_getSortKey writes ONE character too much */
+    int32_t cap = dest8->utf8_cap ? dest8->utf8_cap - 1 : 0;
 
     sortkey_len = ucol_getSortKey(coll, src16->utf16, src16->utf16_len,
-                                  dest8->utf8, dest8->utf8_cap);
+                                  dest8->utf8, cap);
 
     /* check for buffer overflow, resize and retry */
-    if (sortkey_len > dest8->utf8_cap)
+    if (sortkey_len > cap)
     {
         icu_buf_utf8_resize(dest8, sortkey_len * 2);
         sortkey_len = ucol_getSortKey(coll, src16->utf16, src16->utf16_len,
@@ -47,7 +50,7 @@ void icu_sortkey8_from_utf16(UCollator *coll,
     if (U_SUCCESS(*status)
         && sortkey_len > 0)
         dest8->utf8_len = sortkey_len;
-    else 
+    else
         icu_buf_utf8_clear(dest8);
 }