470 lines
18 KiB
C++
470 lines
18 KiB
C++
/*
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*******************************************************************************
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*
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* Copyright (C) 2003-2011, International Business Machines
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* Corporation and others. All Rights Reserved.
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*
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*******************************************************************************
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* file name: ucol_swp.cpp
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* encoding: US-ASCII
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* tab size: 8 (not used)
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* indentation:4
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*
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* created on: 2003sep10
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* created by: Markus W. Scherer
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*
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* Swap collation binaries.
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*/
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#include "unicode/udata.h" /* UDataInfo */
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#include "utrie.h"
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#include "udataswp.h"
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#include "cmemory.h"
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#include "ucol_data.h"
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#include "ucol_swp.h"
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/* swapping ----------------------------------------------------------------- */
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/*
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* This performs data swapping for a folded trie (see utrie.c for details).
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*/
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U_CAPI int32_t U_EXPORT2
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utrie_swap(const UDataSwapper *ds,
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const void *inData, int32_t length, void *outData,
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UErrorCode *pErrorCode) {
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const UTrieHeader *inTrie;
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UTrieHeader trie;
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int32_t size;
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UBool dataIs32;
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if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
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return 0;
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}
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if(ds==NULL || inData==NULL || (length>=0 && outData==NULL)) {
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*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
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return 0;
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}
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/* setup and swapping */
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if(length>=0 && (uint32_t)length<sizeof(UTrieHeader)) {
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*pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
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return 0;
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}
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inTrie=(const UTrieHeader *)inData;
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trie.signature=ds->readUInt32(inTrie->signature);
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trie.options=ds->readUInt32(inTrie->options);
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trie.indexLength=udata_readInt32(ds, inTrie->indexLength);
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trie.dataLength=udata_readInt32(ds, inTrie->dataLength);
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if( trie.signature!=0x54726965 ||
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(trie.options&UTRIE_OPTIONS_SHIFT_MASK)!=UTRIE_SHIFT ||
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((trie.options>>UTRIE_OPTIONS_INDEX_SHIFT)&UTRIE_OPTIONS_SHIFT_MASK)!=UTRIE_INDEX_SHIFT ||
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trie.indexLength<UTRIE_BMP_INDEX_LENGTH ||
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(trie.indexLength&(UTRIE_SURROGATE_BLOCK_COUNT-1))!=0 ||
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trie.dataLength<UTRIE_DATA_BLOCK_LENGTH ||
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(trie.dataLength&(UTRIE_DATA_GRANULARITY-1))!=0 ||
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((trie.options&UTRIE_OPTIONS_LATIN1_IS_LINEAR)!=0 && trie.dataLength<(UTRIE_DATA_BLOCK_LENGTH+0x100))
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) {
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*pErrorCode=U_INVALID_FORMAT_ERROR; /* not a UTrie */
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return 0;
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}
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dataIs32=(UBool)((trie.options&UTRIE_OPTIONS_DATA_IS_32_BIT)!=0);
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size=sizeof(UTrieHeader)+trie.indexLength*2+trie.dataLength*(dataIs32?4:2);
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if(length>=0) {
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UTrieHeader *outTrie;
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if(length<size) {
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*pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
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return 0;
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}
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outTrie=(UTrieHeader *)outData;
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/* swap the header */
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ds->swapArray32(ds, inTrie, sizeof(UTrieHeader), outTrie, pErrorCode);
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/* swap the index and the data */
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if(dataIs32) {
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ds->swapArray16(ds, inTrie+1, trie.indexLength*2, outTrie+1, pErrorCode);
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ds->swapArray32(ds, (const uint16_t *)(inTrie+1)+trie.indexLength, trie.dataLength*4,
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(uint16_t *)(outTrie+1)+trie.indexLength, pErrorCode);
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} else {
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ds->swapArray16(ds, inTrie+1, (trie.indexLength+trie.dataLength)*2, outTrie+1, pErrorCode);
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}
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}
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return size;
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}
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#if !UCONFIG_NO_COLLATION
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/* Modified copy of the beginning of ucol_swapBinary(). */
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U_CAPI UBool U_EXPORT2
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ucol_looksLikeCollationBinary(const UDataSwapper *ds,
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const void *inData, int32_t length) {
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const uint8_t *inBytes;
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const UCATableHeader *inHeader;
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UCATableHeader header;
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if(ds==NULL || inData==NULL || length<-1) {
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return FALSE;
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}
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inBytes=(const uint8_t *)inData;
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inHeader=(const UCATableHeader *)inData;
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/*
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* The collation binary must contain at least the UCATableHeader,
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* starting with its size field.
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* sizeof(UCATableHeader)==42*4 in ICU 2.8
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* check the length against the header size before reading the size field
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*/
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uprv_memset(&header, 0, sizeof(header));
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if(length<0) {
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header.size=udata_readInt32(ds, inHeader->size);
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} else if((length<(42*4) || length<(header.size=udata_readInt32(ds, inHeader->size)))) {
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return FALSE;
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}
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header.magic=ds->readUInt32(inHeader->magic);
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if(!(
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header.magic==UCOL_HEADER_MAGIC &&
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inHeader->formatVersion[0]==3 /*&&
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inHeader->formatVersion[1]>=0*/
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)) {
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return FALSE;
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}
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if(inHeader->isBigEndian!=ds->inIsBigEndian || inHeader->charSetFamily!=ds->inCharset) {
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return FALSE;
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}
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return TRUE;
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}
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/* swap a header-less collation binary, inside a resource bundle or ucadata.icu */
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U_CAPI int32_t U_EXPORT2
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ucol_swapBinary(const UDataSwapper *ds,
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const void *inData, int32_t length, void *outData,
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UErrorCode *pErrorCode) {
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const uint8_t *inBytes;
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uint8_t *outBytes;
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const UCATableHeader *inHeader;
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UCATableHeader *outHeader;
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UCATableHeader header;
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uint32_t count;
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/* argument checking in case we were not called from ucol_swap() */
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if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
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return 0;
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}
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if(ds==NULL || inData==NULL || length<-1 || (length>0 && outData==NULL)) {
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*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
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return 0;
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}
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inBytes=(const uint8_t *)inData;
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outBytes=(uint8_t *)outData;
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inHeader=(const UCATableHeader *)inData;
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outHeader=(UCATableHeader *)outData;
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/*
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* The collation binary must contain at least the UCATableHeader,
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* starting with its size field.
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* sizeof(UCATableHeader)==42*4 in ICU 2.8
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* check the length against the header size before reading the size field
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*/
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uprv_memset(&header, 0, sizeof(header));
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if(length<0) {
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header.size=udata_readInt32(ds, inHeader->size);
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} else if((length<(42*4) || length<(header.size=udata_readInt32(ds, inHeader->size)))) {
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udata_printError(ds, "ucol_swapBinary(): too few bytes (%d after header) for collation data\n",
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length);
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*pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
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return 0;
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}
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header.magic=ds->readUInt32(inHeader->magic);
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if(!(
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header.magic==UCOL_HEADER_MAGIC &&
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inHeader->formatVersion[0]==3 /*&&
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inHeader->formatVersion[1]>=0*/
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)) {
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udata_printError(ds, "ucol_swapBinary(): magic 0x%08x or format version %02x.%02x is not a collation binary\n",
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header.magic,
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inHeader->formatVersion[0], inHeader->formatVersion[1]);
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*pErrorCode=U_UNSUPPORTED_ERROR;
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return 0;
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}
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if(inHeader->isBigEndian!=ds->inIsBigEndian || inHeader->charSetFamily!=ds->inCharset) {
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udata_printError(ds, "ucol_swapBinary(): endianness %d or charset %d does not match the swapper\n",
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inHeader->isBigEndian, inHeader->charSetFamily);
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*pErrorCode=U_INVALID_FORMAT_ERROR;
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return 0;
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}
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if(length>=0) {
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/* copy everything, takes care of data that needs no swapping */
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if(inBytes!=outBytes) {
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uprv_memcpy(outBytes, inBytes, header.size);
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}
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/* swap the necessary pieces in the order of their occurrence in the data */
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/* read more of the UCATableHeader (the size field was read above) */
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header.options= ds->readUInt32(inHeader->options);
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header.UCAConsts= ds->readUInt32(inHeader->UCAConsts);
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header.contractionUCACombos= ds->readUInt32(inHeader->contractionUCACombos);
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header.mappingPosition= ds->readUInt32(inHeader->mappingPosition);
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header.expansion= ds->readUInt32(inHeader->expansion);
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header.contractionIndex= ds->readUInt32(inHeader->contractionIndex);
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header.contractionCEs= ds->readUInt32(inHeader->contractionCEs);
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header.contractionSize= ds->readUInt32(inHeader->contractionSize);
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header.endExpansionCE= ds->readUInt32(inHeader->endExpansionCE);
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header.expansionCESize= ds->readUInt32(inHeader->expansionCESize);
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header.endExpansionCECount= udata_readInt32(ds, inHeader->endExpansionCECount);
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header.contractionUCACombosSize=udata_readInt32(ds, inHeader->contractionUCACombosSize);
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header.scriptToLeadByte= ds->readUInt32(inHeader->scriptToLeadByte);
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header.leadByteToScript= ds->readUInt32(inHeader->leadByteToScript);
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/* swap the 32-bit integers in the header */
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ds->swapArray32(ds, inHeader, (int32_t)((const char *)&inHeader->jamoSpecial-(const char *)inHeader),
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outHeader, pErrorCode);
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ds->swapArray32(ds, &(inHeader->scriptToLeadByte), sizeof(header.scriptToLeadByte) + sizeof(header.leadByteToScript),
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&(outHeader->scriptToLeadByte), pErrorCode);
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/* set the output platform properties */
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outHeader->isBigEndian=ds->outIsBigEndian;
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outHeader->charSetFamily=ds->outCharset;
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/* swap the options */
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if(header.options!=0) {
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ds->swapArray32(ds, inBytes+header.options, header.expansion-header.options,
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outBytes+header.options, pErrorCode);
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}
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/* swap the expansions */
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if(header.mappingPosition!=0 && header.expansion!=0) {
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if(header.contractionIndex!=0) {
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/* expansions bounded by contractions */
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count=header.contractionIndex-header.expansion;
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} else {
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/* no contractions: expansions bounded by the main trie */
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count=header.mappingPosition-header.expansion;
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}
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ds->swapArray32(ds, inBytes+header.expansion, (int32_t)count,
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outBytes+header.expansion, pErrorCode);
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}
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/* swap the contractions */
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if(header.contractionSize!=0) {
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/* contractionIndex: UChar[] */
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ds->swapArray16(ds, inBytes+header.contractionIndex, header.contractionSize*2,
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outBytes+header.contractionIndex, pErrorCode);
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/* contractionCEs: CEs[] */
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ds->swapArray32(ds, inBytes+header.contractionCEs, header.contractionSize*4,
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outBytes+header.contractionCEs, pErrorCode);
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}
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/* swap the main trie */
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if(header.mappingPosition!=0) {
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count=header.endExpansionCE-header.mappingPosition;
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utrie_swap(ds, inBytes+header.mappingPosition, (int32_t)count,
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outBytes+header.mappingPosition, pErrorCode);
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}
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/* swap the max expansion table */
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if(header.endExpansionCECount!=0) {
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ds->swapArray32(ds, inBytes+header.endExpansionCE, header.endExpansionCECount*4,
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outBytes+header.endExpansionCE, pErrorCode);
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}
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/* expansionCESize, unsafeCP, contrEndCP: uint8_t[], no need to swap */
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/* swap UCA constants */
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if(header.UCAConsts!=0) {
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/*
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* if UCAConsts!=0 then contractionUCACombos because we are swapping
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* the UCA data file, and we know that the UCA contains contractions
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*/
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count=header.contractionUCACombos-header.UCAConsts;
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ds->swapArray32(ds, inBytes+header.UCAConsts, header.contractionUCACombos-header.UCAConsts,
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outBytes+header.UCAConsts, pErrorCode);
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}
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/* swap UCA contractions */
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if(header.contractionUCACombosSize!=0) {
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count=header.contractionUCACombosSize*inHeader->contractionUCACombosWidth*U_SIZEOF_UCHAR;
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ds->swapArray16(ds, inBytes+header.contractionUCACombos, (int32_t)count,
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outBytes+header.contractionUCACombos, pErrorCode);
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}
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/* swap the script to lead bytes */
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if(header.scriptToLeadByte!=0) {
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int indexCount = ds->readUInt16(*((uint16_t*)(inBytes+header.scriptToLeadByte))); // each entry = 2 * uint16
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int dataCount = ds->readUInt16(*((uint16_t*)(inBytes+header.scriptToLeadByte + 2))); // each entry = uint16
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ds->swapArray16(ds, inBytes+header.scriptToLeadByte,
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4 + (4 * indexCount) + (2 * dataCount),
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outBytes+header.scriptToLeadByte, pErrorCode);
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}
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/* swap the lead byte to scripts */
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if(header.leadByteToScript!=0) {
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int indexCount = ds->readUInt16(*((uint16_t*)(inBytes+header.leadByteToScript))); // each entry = uint16
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int dataCount = ds->readUInt16(*((uint16_t*)(inBytes+header.leadByteToScript + 2))); // each entry = uint16
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ds->swapArray16(ds, inBytes+header.leadByteToScript,
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4 + (2 * indexCount) + (2 * dataCount),
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outBytes+header.leadByteToScript, pErrorCode);
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}
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}
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return header.size;
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}
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/* swap ICU collation data like ucadata.icu */
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U_CAPI int32_t U_EXPORT2
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ucol_swap(const UDataSwapper *ds,
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const void *inData, int32_t length, void *outData,
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UErrorCode *pErrorCode) {
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const UDataInfo *pInfo;
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int32_t headerSize, collationSize;
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/* udata_swapDataHeader checks the arguments */
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headerSize=udata_swapDataHeader(ds, inData, length, outData, pErrorCode);
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if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
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return 0;
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}
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/* check data format and format version */
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pInfo=(const UDataInfo *)((const char *)inData+4);
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if(!(
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pInfo->dataFormat[0]==0x55 && /* dataFormat="UCol" */
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pInfo->dataFormat[1]==0x43 &&
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pInfo->dataFormat[2]==0x6f &&
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pInfo->dataFormat[3]==0x6c &&
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pInfo->formatVersion[0]==3 /*&&
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pInfo->formatVersion[1]>=0*/
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)) {
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udata_printError(ds, "ucol_swap(): data format %02x.%02x.%02x.%02x (format version %02x.%02x) is not a collation file\n",
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pInfo->dataFormat[0], pInfo->dataFormat[1],
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pInfo->dataFormat[2], pInfo->dataFormat[3],
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pInfo->formatVersion[0], pInfo->formatVersion[1]);
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*pErrorCode=U_UNSUPPORTED_ERROR;
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return 0;
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}
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collationSize=ucol_swapBinary(ds,
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(const char *)inData+headerSize,
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length>=0 ? length-headerSize : -1,
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(char *)outData+headerSize,
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pErrorCode);
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if(U_SUCCESS(*pErrorCode)) {
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return headerSize+collationSize;
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} else {
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return 0;
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}
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}
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/* swap inverse UCA collation data (invuca.icu) */
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U_CAPI int32_t U_EXPORT2
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ucol_swapInverseUCA(const UDataSwapper *ds,
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const void *inData, int32_t length, void *outData,
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UErrorCode *pErrorCode) {
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const UDataInfo *pInfo;
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int32_t headerSize;
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const uint8_t *inBytes;
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uint8_t *outBytes;
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const InverseUCATableHeader *inHeader;
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InverseUCATableHeader *outHeader;
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InverseUCATableHeader header={ 0,0,0,0,0,{0,0,0,0},{0,0,0,0,0,0,0,0} };
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/* udata_swapDataHeader checks the arguments */
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headerSize=udata_swapDataHeader(ds, inData, length, outData, pErrorCode);
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if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) {
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return 0;
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}
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/* check data format and format version */
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pInfo=(const UDataInfo *)((const char *)inData+4);
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if(!(
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pInfo->dataFormat[0]==0x49 && /* dataFormat="InvC" */
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pInfo->dataFormat[1]==0x6e &&
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pInfo->dataFormat[2]==0x76 &&
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pInfo->dataFormat[3]==0x43 &&
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pInfo->formatVersion[0]==2 &&
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pInfo->formatVersion[1]>=1
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)) {
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udata_printError(ds, "ucol_swapInverseUCA(): data format %02x.%02x.%02x.%02x (format version %02x.%02x) is not an inverse UCA collation file\n",
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pInfo->dataFormat[0], pInfo->dataFormat[1],
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pInfo->dataFormat[2], pInfo->dataFormat[3],
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pInfo->formatVersion[0], pInfo->formatVersion[1]);
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*pErrorCode=U_UNSUPPORTED_ERROR;
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return 0;
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}
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inBytes=(const uint8_t *)inData+headerSize;
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outBytes=(uint8_t *)outData+headerSize;
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inHeader=(const InverseUCATableHeader *)inBytes;
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outHeader=(InverseUCATableHeader *)outBytes;
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/*
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* The inverse UCA collation binary must contain at least the InverseUCATableHeader,
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* starting with its size field.
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* sizeof(UCATableHeader)==8*4 in ICU 2.8
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* check the length against the header size before reading the size field
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*/
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if(length<0) {
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header.byteSize=udata_readInt32(ds, inHeader->byteSize);
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} else if(
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((length-headerSize)<(8*4) ||
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(uint32_t)(length-headerSize)<(header.byteSize=udata_readInt32(ds, inHeader->byteSize)))
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) {
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udata_printError(ds, "ucol_swapInverseUCA(): too few bytes (%d after header) for inverse UCA collation data\n",
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length);
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*pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
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return 0;
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}
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if(length>=0) {
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/* copy everything, takes care of data that needs no swapping */
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if(inBytes!=outBytes) {
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uprv_memcpy(outBytes, inBytes, header.byteSize);
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}
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/* swap the necessary pieces in the order of their occurrence in the data */
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/* read more of the InverseUCATableHeader (the byteSize field was read above) */
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header.tableSize= ds->readUInt32(inHeader->tableSize);
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header.contsSize= ds->readUInt32(inHeader->contsSize);
|
|
header.table= ds->readUInt32(inHeader->table);
|
|
header.conts= ds->readUInt32(inHeader->conts);
|
|
|
|
/* swap the 32-bit integers in the header */
|
|
ds->swapArray32(ds, inHeader, 5*4, outHeader, pErrorCode);
|
|
|
|
/* swap the inverse table; tableSize counts uint32_t[3] rows */
|
|
ds->swapArray32(ds, inBytes+header.table, header.tableSize*3*4,
|
|
outBytes+header.table, pErrorCode);
|
|
|
|
/* swap the continuation table; contsSize counts UChars */
|
|
ds->swapArray16(ds, inBytes+header.conts, header.contsSize*U_SIZEOF_UCHAR,
|
|
outBytes+header.conts, pErrorCode);
|
|
}
|
|
|
|
return headerSize+header.byteSize;
|
|
}
|
|
|
|
#endif /* #if !UCONFIG_NO_COLLATION */
|