Split ICU wrapper library into several sources

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

diff --git a/src/icu_sortkey.c b/src/icu_sortkey.c
new file mode 100644 (file)
index 0000000..a00c473
--- /dev/null
+++ b/src/icu_sortkey.c
@@ -0,0 +1,65 @@
+/* This file is part of the YAZ toolkit.
+ * Copyright (C) 1995-2009 Index Data
+ * See the file LICENSE for details.
+ */
+
+/**
+ * \file
+ * \brief sortkey utility based on ICU Collator
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#if YAZ_HAVE_ICU
+#include <yaz/xmalloc.h>
+
+#include <yaz/icu_I18N.h>
+
+#include <yaz/log.h>
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include <unicode/ustring.h>  /* some more string fcns*/
+#include <unicode/uchar.h>    /* char names           */
+
+void icu_sortkey8_from_utf16(UCollator *coll,
+                             struct icu_buf_utf8 * dest8, 
+                             struct icu_buf_utf16 * src16,
+                             UErrorCode * status)
+{ 
+    int32_t sortkey_len = 0;
+
+    sortkey_len = ucol_getSortKey(coll, src16->utf16, src16->utf16_len,
+                                  dest8->utf8, dest8->utf8_cap);
+
+    /* check for buffer overflow, resize and retry */
+    if (sortkey_len > dest8->utf8_cap)
+    {
+        icu_buf_utf8_resize(dest8, sortkey_len * 2);
+        sortkey_len = ucol_getSortKey(coll, src16->utf16, src16->utf16_len,
+                                      dest8->utf8, dest8->utf8_cap);
+    }
+
+    if (U_SUCCESS(*status)
+        && sortkey_len > 0)
+        dest8->utf8_len = sortkey_len;
+    else 
+        icu_buf_utf8_clear(dest8);
+}
+
+
+#endif /* YAZ_HAVE_ICU */
+
+/*
+ * Local variables:
+ * c-basic-offset: 4
+ * c-file-style: "Stroustrup"
+ * indent-tabs-mode: nil
+ * End:
+ * vim: shiftwidth=4 tabstop=8 expandtab
+ */
+