Check in the pristine copy of ICU 4.6...

icu46/source/i18n/bms.cpp

+/*
+ * Copyright (C) 2008-2009, International Business Machines Corporation and Others.
+ * All rights reserved.
+ */
+
+#include "unicode/utypes.h"
+#include "cmemory.h"
+#include "unicode/bms.h"
+#include "unicode/unistr.h"
+#include "unicode/colldata.h"
+#include "unicode/bmsearch.h"
+
+
+#if !UCONFIG_NO_COLLATION && !UCONFIG_NO_BREAK_ITERATION
+
+
+//#define USE_SAFE_CASTS
+#ifdef USE_SAFE_CASTS
+#define STATIC_CAST(type,value) static_cast<type>(value)
+#define CONST_CAST(type,value) const_cast<type>(value)
+#else
+#define STATIC_CAST(type,value) (type) (value)
+#define CONST_CAST(type,value) (type) (value)
+#endif
+
+U_NAMESPACE_USE
+
+U_CAPI UCD * U_EXPORT2
+ucd_open(UCollator *coll, UErrorCode *status)
+{
+    return STATIC_CAST(UCD *, CollData::open(coll, *status));
+}
+
+U_CAPI void U_EXPORT2
+ucd_close(UCD *ucd)
+{
+    CollData *data = STATIC_CAST(CollData *, ucd);
+
+    CollData::close(data);
+}
+
+U_CAPI UCollator * U_EXPORT2
+ucd_getCollator(UCD *ucd)
+{
+    CollData *data = STATIC_CAST(CollData *, ucd);
+
+    return data->getCollator();
+}
+
+U_CAPI void U_EXPORT2
+ucd_freeCache()
+{
+    CollData::freeCollDataCache();
+}
+
+U_CAPI void U_EXPORT2
+ucd_flushCache()
+{
+    CollData::flushCollDataCache();
+}
+
+struct BMS
+{
+    BoyerMooreSearch *bms;
+    const UnicodeString *targetString;
+};
+
+U_CAPI BMS * U_EXPORT2
+bms_open(UCD *ucd,
+         const UChar *pattern, int32_t patternLength,
+         const UChar *target,  int32_t targetLength,
+         UErrorCode  *status)
+{
+    BMS *bms = STATIC_CAST(BMS *, uprv_malloc(sizeof(BMS)));
+
+    if (bms == NULL) {
+        *status = U_MEMORY_ALLOCATION_ERROR;
+        return NULL;
+    }
+
+    CollData *data = (CollData *) ucd;
+    UnicodeString patternString(pattern, patternLength);
+
+    if (target != NULL) {
+        bms->targetString = new UnicodeString(target, targetLength);
+        
+        if (bms->targetString == NULL) {
+            bms->bms = NULL;
+            *status = U_MEMORY_ALLOCATION_ERROR;
+            return bms;
+        }
+    } else {
+        bms->targetString = NULL;
+    }
+
+    bms->bms = new BoyerMooreSearch(data, patternString, bms->targetString, *status);
+
+    if (bms->bms == NULL) {
+        *status = U_MEMORY_ALLOCATION_ERROR;
+    }
+
+    return bms;
+}
+
+U_CAPI void U_EXPORT2
+bms_close(BMS *bms)
+{
+    delete bms->bms;
+
+    delete bms->targetString;
+
+    uprv_free(bms);
+}
+
+U_CAPI UBool U_EXPORT2
+bms_empty(BMS *bms)
+{
+    return bms->bms->empty();
+}
+
+U_CAPI UCD * U_EXPORT2
+bms_getData(BMS *bms)
+{
+    return STATIC_CAST(UCD *, bms->bms->getData());
+}
+
+U_CAPI UBool U_EXPORT2
+bms_search(BMS *bms, int32_t offset, int32_t *start, int32_t *end)
+{
+    return bms->bms->search(offset, *start, *end);
+}
+
+U_CAPI void U_EXPORT2
+bms_setTargetString(BMS *bms, const UChar *target, int32_t targetLength, UErrorCode *status)
+{
+    if (U_FAILURE(*status)) {
+        return;
+    }
+
+    if (bms->targetString != NULL) {
+        delete bms->targetString;
+    }
+
+    if (target != NULL) {
+        bms->targetString = new UnicodeString(target, targetLength);
+    } else {
+        bms->targetString = NULL;
+    }
+
+    bms->bms->setTargetString(bms->targetString, *status);
+}
+
+#endif