+/*
+*******************************************************************************
+* Copyright (C) 2012, 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
+
+#ifndef CYGWINMSVC /* On Cygwin/MSVC, the error redefinition of symbols occurs.*/
+const int32_t DictionaryData::TRIE_TYPE_BYTES;
+const int32_t DictionaryData::TRIE_TYPE_UCHARS;
+#endif
+
+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 *lengths, int32_t &count, int32_t limit, int32_t *values) const {
+ UCharsTrie uct(characters);
+ UChar32 c = utext_next32(text);
+ if (c < 0) {
+ return 0;
+ }
+ UStringTrieResult result = uct.first(c);
+ int32_t numChars = 1;
+ count = 0;
+ for (;;) {
+ if (USTRINGTRIE_HAS_VALUE(result)) {
+ if (count < limit) {
+ if (values != NULL) {
+ values[count] = uct.getValue();
+ }
+ lengths[count++] = numChars;
+ }
+ if (result == USTRINGTRIE_FINAL_VALUE) {
+ break;
+ }
+ }
+ else if (result == USTRINGTRIE_NO_MATCH) {
+ break;
+ }
+
+ // TODO: why do we have a text limit if the UText knows its length?
+ if (numChars >= maxLength) {
+ break;
+ }
+
+ c = utext_next32(text);
+ if (c < 0) {
+ break;
+ }
+ ++numChars;
+ result = uct.next(c);
+ }
+ return numChars;
+}
+
+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 *lengths, int32_t &count, int32_t limit, int32_t *values) const {
+ BytesTrie bt(characters);
+ UChar32 c = utext_next32(text);
+ if (c < 0) {
+ return 0;
+ }
+ UStringTrieResult result = bt.first(transform(c));
+ int32_t numChars = 1;
+ count = 0;
+ for (;;) {
+ if (USTRINGTRIE_HAS_VALUE(result)) {
+ if (count < limit) {
+ if (values != NULL) {
+ values[count] = bt.getValue();
+ }
+ lengths[count++] = numChars;
+ }
+ if (result == USTRINGTRIE_FINAL_VALUE) {
+ break;
+ }
+ }
+ else if (result == USTRINGTRIE_NO_MATCH) {
+ break;
+ }
+
+ // TODO: why do we have a text limit if the UText knows its length?
+ if (numChars >= maxLength) {
+ break;
+ }
+
+ c = utext_next32(text);
+ if (c < 0) {
+ break;
+ }
+ ++numChars;
+ result = bt.next(transform(c));
+ }
+ return numChars;
+}
+
+
+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 == NULL || 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 = (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
projects / apple / icu.git / blobdiff