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/* This file is part of the YAZ toolkit.
* Copyright (C) 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;
/* 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, cap);
/* check for buffer overflow, resize and retry */
if (sortkey_len > 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
*/
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