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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
* Copyright (C) 2014-2016, International Business Machines
* Corporation and others. All Rights Reserved.
*******************************************************************************
* dictionarydata.h
*
* created on: 2012may31
* created by: Markus W. Scherer & Maxime Serrano
*/
#include "dictionarydata.h"
#include "unicode/ucharstrie.h"
#include "unicode/bytestrie.h"
#include "unicode/udata.h"
#include "cmemory.h"
#if !UCONFIG_NO_BREAK_ITERATION
U_NAMESPACE_BEGIN
const int32_t DictionaryData::TRIE_TYPE_BYTES = 0;
const int32_t DictionaryData::TRIE_TYPE_UCHARS = 1;
const int32_t DictionaryData::TRIE_TYPE_MASK = 7;
const int32_t DictionaryData::TRIE_HAS_VALUES = 8;
const int32_t DictionaryData::TRANSFORM_NONE = 0;
const int32_t DictionaryData::TRANSFORM_TYPE_OFFSET = 0x1000000;
const int32_t DictionaryData::TRANSFORM_TYPE_MASK = 0x7f000000;
const int32_t DictionaryData::TRANSFORM_OFFSET_MASK = 0x1fffff;
DictionaryMatcher::~DictionaryMatcher() {
}
UCharsDictionaryMatcher::~UCharsDictionaryMatcher() {
udata_close(file);
}
int32_t UCharsDictionaryMatcher::getType() const {
return DictionaryData::TRIE_TYPE_UCHARS;
}
int32_t UCharsDictionaryMatcher::matches(UText *text, int32_t maxLength, int32_t limit,
int32_t *lengths, int32_t *cpLengths, int32_t *values,
int32_t *prefix) const {
UCharsTrie uct(characters);
int32_t startingTextIndex = (int32_t)utext_getNativeIndex(text);
int32_t wordCount = 0;
int32_t codePointsMatched = 0;
for (UChar32 c = utext_next32(text); c >= 0; c=utext_next32(text)) {
UStringTrieResult result = (codePointsMatched == 0) ? uct.first(c) : uct.next(c);
int32_t lengthMatched = (int32_t)utext_getNativeIndex(text) - startingTextIndex;
codePointsMatched += 1;
if (USTRINGTRIE_HAS_VALUE(result)) {
if (wordCount < limit) {
if (values != nullptr) {
values[wordCount] = uct.getValue();
}
if (lengths != nullptr) {
lengths[wordCount] = lengthMatched;
}
if (cpLengths != nullptr) {
cpLengths[wordCount] = codePointsMatched;
}
++wordCount;
}
if (result == USTRINGTRIE_FINAL_VALUE) {
break;
}
}
else if (result == USTRINGTRIE_NO_MATCH) {
break;
}
if (lengthMatched >= maxLength) {
break;
}
}
if (prefix != nullptr) {
*prefix = codePointsMatched;
}
return wordCount;
}
BytesDictionaryMatcher::~BytesDictionaryMatcher() {
udata_close(file);
}
UChar32 BytesDictionaryMatcher::transform(UChar32 c) const {
if ((transformConstant & DictionaryData::TRANSFORM_TYPE_MASK) == DictionaryData::TRANSFORM_TYPE_OFFSET) {
if (c == 0x200D) {
return 0xFF;
} else if (c == 0x200C) {
return 0xFE;
}
int32_t delta = c - (transformConstant & DictionaryData::TRANSFORM_OFFSET_MASK);
if (delta < 0 || 0xFD < delta) {
return U_SENTINEL;
}
return (UChar32)delta;
}
return c;
}
int32_t BytesDictionaryMatcher::getType() const {
return DictionaryData::TRIE_TYPE_BYTES;
}
int32_t BytesDictionaryMatcher::matches(UText *text, int32_t maxLength, int32_t limit,
int32_t *lengths, int32_t *cpLengths, int32_t *values,
int32_t *prefix) const {
BytesTrie bt(characters);
int32_t startingTextIndex = (int32_t)utext_getNativeIndex(text);
int32_t wordCount = 0;
int32_t codePointsMatched = 0;
for (UChar32 c = utext_next32(text); c >= 0; c=utext_next32(text)) {
UStringTrieResult result = (codePointsMatched == 0) ? bt.first(transform(c)) : bt.next(transform(c));
int32_t lengthMatched = (int32_t)utext_getNativeIndex(text) - startingTextIndex;
codePointsMatched += 1;
if (USTRINGTRIE_HAS_VALUE(result)) {
if (wordCount < limit) {
if (values != nullptr) {
values[wordCount] = bt.getValue();
}
if (lengths != nullptr) {
lengths[wordCount] = lengthMatched;
}
if (cpLengths != nullptr) {
cpLengths[wordCount] = codePointsMatched;
}
++wordCount;
}
if (result == USTRINGTRIE_FINAL_VALUE) {
break;
}
}
else if (result == USTRINGTRIE_NO_MATCH) {
break;
}
if (lengthMatched >= maxLength) {
break;
}
}
if (prefix != nullptr) {
*prefix = codePointsMatched;
}
return wordCount;
}
U_NAMESPACE_END
U_NAMESPACE_USE
U_CAPI int32_t U_EXPORT2
udict_swap(const UDataSwapper *ds, const void *inData, int32_t length,
void *outData, UErrorCode *pErrorCode) {
const UDataInfo *pInfo;
int32_t headerSize;
const uint8_t *inBytes;
uint8_t *outBytes;
const int32_t *inIndexes;
int32_t indexes[DictionaryData::IX_COUNT];
int32_t i, offset, size;
headerSize = udata_swapDataHeader(ds, inData, length, outData, pErrorCode);
if (pErrorCode == nullptr || U_FAILURE(*pErrorCode)) return 0;
pInfo = (const UDataInfo *)((const char *)inData + 4);
if (!(pInfo->dataFormat[0] == 0x44 &&
pInfo->dataFormat[1] == 0x69 &&
pInfo->dataFormat[2] == 0x63 &&
pInfo->dataFormat[3] == 0x74 &&
pInfo->formatVersion[0] == 1)) {
udata_printError(ds, "udict_swap(): data format %02x.%02x.%02x.%02x (format version %02x) is not recognized as dictionary data\n",
pInfo->dataFormat[0], pInfo->dataFormat[1], pInfo->dataFormat[2], pInfo->dataFormat[3], pInfo->formatVersion[0]);
*pErrorCode = U_UNSUPPORTED_ERROR;
return 0;
}
inBytes = (const uint8_t *)inData + headerSize;
outBytes = (outData == nullptr) ? nullptr : (uint8_t *)outData + headerSize;
inIndexes = (const int32_t *)inBytes;
if (length >= 0) {
length -= headerSize;
if (length < (int32_t)(sizeof(indexes))) {
udata_printError(ds, "udict_swap(): too few bytes (%d after header) for dictionary data\n", length);
*pErrorCode = U_INDEX_OUTOFBOUNDS_ERROR;
return 0;
}
}
for (i = 0; i < DictionaryData::IX_COUNT; i++) {
indexes[i] = udata_readInt32(ds, inIndexes[i]);
}
size = indexes[DictionaryData::IX_TOTAL_SIZE];
if (length >= 0) {
if (length < size) {
udata_printError(ds, "udict_swap(): too few bytes (%d after header) for all of dictionary data\n", length);
*pErrorCode = U_INDEX_OUTOFBOUNDS_ERROR;
return 0;
}
if (inBytes != outBytes) {
uprv_memcpy(outBytes, inBytes, size);
}
offset = 0;
ds->swapArray32(ds, inBytes, sizeof(indexes), outBytes, pErrorCode);
offset = (int32_t)sizeof(indexes);
int32_t trieType = indexes[DictionaryData::IX_TRIE_TYPE] & DictionaryData::TRIE_TYPE_MASK;
int32_t nextOffset = indexes[DictionaryData::IX_RESERVED1_OFFSET];
if (trieType == DictionaryData::TRIE_TYPE_UCHARS) {
ds->swapArray16(ds, inBytes + offset, nextOffset - offset, outBytes + offset, pErrorCode);
} else if (trieType == DictionaryData::TRIE_TYPE_BYTES) {
// nothing to do
} else {
udata_printError(ds, "udict_swap(): unknown trie type!\n");
*pErrorCode = U_UNSUPPORTED_ERROR;
return 0;
}
// these next two sections are empty in the current format,
// but may be used later.
offset = nextOffset;
nextOffset = indexes[DictionaryData::IX_RESERVED2_OFFSET];
offset = nextOffset;
nextOffset = indexes[DictionaryData::IX_TOTAL_SIZE];
offset = nextOffset;
}
return headerSize + size;
}
#endif
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