godotengine
/
godot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
godot/thirdparty/icu4c/common/ucol_swp.cpp

616 lines
23 KiB
C++
Raw Blame History

// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
*
* Copyright (C) 2003-2015, International Business Machines
* Corporation and others. All Rights Reserved.
*
*******************************************************************************
* file name: ucol_swp.cpp
* encoding: UTF-8
* tab size: 8 (not used)
* indentation:4
*
* created on: 2003sep10
* created by: Markus W. Scherer
*
* Swap collation binaries.
*/
#include "unicode/udata.h" /* UDataInfo */
#include "utrie.h"
#include "utrie2.h"
#include "udataswp.h"
#include "cmemory.h"
#include "ucol_data.h"
#include "ucol_swp.h"
/* swapping ----------------------------------------------------------------- */
#if !UCONFIG_NO_COLLATION
U_CAPI UBool U_EXPORT2
ucol_looksLikeCollationBinary(const UDataSwapper *ds,
const void *inData, int32_t length) {
if(ds==nullptr || inData==nullptr || length<-1) {
return false;
}
// First check for format version 4+ which has a standard data header.
UErrorCode errorCode=U_ZERO_ERROR;
(void)udata_swapDataHeader(ds, inData, -1, nullptr, &errorCode);
if(U_SUCCESS(errorCode)) {
const UDataInfo &info=*(const UDataInfo *)((const char *)inData+4);
if(info.dataFormat[0]==0x55 && // dataFormat="UCol"
info.dataFormat[1]==0x43 &&
info.dataFormat[2]==0x6f &&
info.dataFormat[3]==0x6c) {
return true;
}
}
// Else check for format version 3.
const UCATableHeader *inHeader=(const UCATableHeader *)inData;
/*
* The collation binary must contain at least the UCATableHeader,
* starting with its size field.
* sizeof(UCATableHeader)==42*4 in ICU 2.8
* check the length against the header size before reading the size field
*/
UCATableHeader header;
uprv_memset(&header, 0, sizeof(header));
if(length<0) {
header.size=udata_readInt32(ds, inHeader->size);
} else if((length<(42*4) || length<(header.size=udata_readInt32(ds, inHeader->size)))) {
return false;
}
header.magic=ds->readUInt32(inHeader->magic);
if(!(
header.magic==UCOL_HEADER_MAGIC &&
inHeader->formatVersion[0]==3 /*&&
inHeader->formatVersion[1]>=0*/
)) {
return false;
}
if(inHeader->isBigEndian!=ds->inIsBigEndian || inHeader->charSetFamily!=ds->inCharset) {
return false;
}
return true;
}
namespace {
/* swap a header-less collation formatVersion=3 binary, inside a resource bundle or ucadata.icu */
int32_t
swapFormatVersion3(const UDataSwapper *ds,
const void *inData, int32_t length, void *outData,
UErrorCode *pErrorCode) {
const uint8_t *inBytes;
uint8_t *outBytes;
const UCATableHeader *inHeader;
UCATableHeader *outHeader;
UCATableHeader header;
uint32_t count;
/* argument checking in case we were not called from ucol_swap() */
if(U_FAILURE(*pErrorCode)) {
return 0;
}
if(ds==nullptr || inData==nullptr || length<-1 || (length>0 && outData==nullptr)) {
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
return 0;
}
inBytes=(const uint8_t *)inData;
outBytes=(uint8_t *)outData;
inHeader=(const UCATableHeader *)inData;
outHeader=(UCATableHeader *)outData;
/*
* The collation binary must contain at least the UCATableHeader,
* starting with its size field.
* sizeof(UCATableHeader)==42*4 in ICU 2.8
* check the length against the header size before reading the size field
*/
uprv_memset(&header, 0, sizeof(header));
if(length<0) {
header.size=udata_readInt32(ds, inHeader->size);
} else if((length<(42*4) || length<(header.size=udata_readInt32(ds, inHeader->size)))) {
udata_printError(ds, "ucol_swap(formatVersion=3): too few bytes (%d after header) for collation data\n",
length);
*pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
return 0;
}
header.magic=ds->readUInt32(inHeader->magic);
if(!(
header.magic==UCOL_HEADER_MAGIC &&
inHeader->formatVersion[0]==3 /*&&
inHeader->formatVersion[1]>=0*/
)) {
udata_printError(ds, "ucol_swap(formatVersion=3): magic 0x%08x or format version %02x.%02x is not a collation binary\n",
header.magic,
inHeader->formatVersion[0], inHeader->formatVersion[1]);
*pErrorCode=U_UNSUPPORTED_ERROR;
return 0;
}
if(inHeader->isBigEndian!=ds->inIsBigEndian || inHeader->charSetFamily!=ds->inCharset) {
udata_printError(ds, "ucol_swap(formatVersion=3): endianness %d or charset %d does not match the swapper\n",
inHeader->isBigEndian, inHeader->charSetFamily);
*pErrorCode=U_INVALID_FORMAT_ERROR;
return 0;
}
if(length>=0) {
/* copy everything, takes care of data that needs no swapping */
if(inBytes!=outBytes) {
uprv_memcpy(outBytes, inBytes, header.size);
}
/* swap the necessary pieces in the order of their occurrence in the data */
/* read more of the UCATableHeader (the size field was read above) */
header.options= ds->readUInt32(inHeader->options);
header.UCAConsts= ds->readUInt32(inHeader->UCAConsts);
header.contractionUCACombos= ds->readUInt32(inHeader->contractionUCACombos);
header.mappingPosition= ds->readUInt32(inHeader->mappingPosition);
header.expansion= ds->readUInt32(inHeader->expansion);
header.contractionIndex= ds->readUInt32(inHeader->contractionIndex);
header.contractionCEs= ds->readUInt32(inHeader->contractionCEs);
header.contractionSize= ds->readUInt32(inHeader->contractionSize);
header.endExpansionCE= ds->readUInt32(inHeader->endExpansionCE);
header.expansionCESize= ds->readUInt32(inHeader->expansionCESize);
header.endExpansionCECount= udata_readInt32(ds, inHeader->endExpansionCECount);
header.contractionUCACombosSize=udata_readInt32(ds, inHeader->contractionUCACombosSize);
header.scriptToLeadByte= ds->readUInt32(inHeader->scriptToLeadByte);
header.leadByteToScript= ds->readUInt32(inHeader->leadByteToScript);
/* swap the 32-bit integers in the header */
ds->swapArray32(ds, inHeader, (int32_t)((const char *)&inHeader->jamoSpecial-(const char *)inHeader),
outHeader, pErrorCode);
ds->swapArray32(ds, &(inHeader->scriptToLeadByte), sizeof(header.scriptToLeadByte) + sizeof(header.leadByteToScript),
&(outHeader->scriptToLeadByte), pErrorCode);
/* set the output platform properties */
outHeader->isBigEndian=ds->outIsBigEndian;
outHeader->charSetFamily=ds->outCharset;
/* swap the options */
if(header.options!=0) {
ds->swapArray32(ds, inBytes+header.options, header.expansion-header.options,
outBytes+header.options, pErrorCode);
}
/* swap the expansions */
if(header.mappingPosition!=0 && header.expansion!=0) {
if(header.contractionIndex!=0) {
/* expansions bounded by contractions */
count=header.contractionIndex-header.expansion;
} else {
/* no contractions: expansions bounded by the main trie */
count=header.mappingPosition-header.expansion;
}
ds->swapArray32(ds, inBytes+header.expansion, (int32_t)count,
outBytes+header.expansion, pErrorCode);
}
/* swap the contractions */
if(header.contractionSize!=0) {
/* contractionIndex: char16_t[] */
ds->swapArray16(ds, inBytes+header.contractionIndex, header.contractionSize*2,
outBytes+header.contractionIndex, pErrorCode);
/* contractionCEs: CEs[] */
ds->swapArray32(ds, inBytes+header.contractionCEs, header.contractionSize*4,
outBytes+header.contractionCEs, pErrorCode);
}
/* swap the main trie */
if(header.mappingPosition!=0) {
count=header.endExpansionCE-header.mappingPosition;
utrie_swap(ds, inBytes+header.mappingPosition, (int32_t)count,
outBytes+header.mappingPosition, pErrorCode);
}
/* swap the max expansion table */
if(header.endExpansionCECount!=0) {
ds->swapArray32(ds, inBytes+header.endExpansionCE, header.endExpansionCECount*4,
outBytes+header.endExpansionCE, pErrorCode);
}
/* expansionCESize, unsafeCP, contrEndCP: uint8_t[], no need to swap */
/* swap UCA constants */
if(header.UCAConsts!=0) {
/*
* if UCAConsts!=0 then contractionUCACombos because we are swapping
* the UCA data file, and we know that the UCA contains contractions
*/
ds->swapArray32(ds, inBytes+header.UCAConsts, header.contractionUCACombos-header.UCAConsts,
outBytes+header.UCAConsts, pErrorCode);
}
/* swap UCA contractions */
if(header.contractionUCACombosSize!=0) {
count=header.contractionUCACombosSize*inHeader->contractionUCACombosWidth*U_SIZEOF_UCHAR;
ds->swapArray16(ds, inBytes+header.contractionUCACombos, (int32_t)count,
outBytes+header.contractionUCACombos, pErrorCode);
}
/* swap the script to lead bytes */
if(header.scriptToLeadByte!=0) {
int indexCount = ds->readUInt16(*((uint16_t*)(inBytes+header.scriptToLeadByte))); // each entry = 2 * uint16
int dataCount = ds->readUInt16(*((uint16_t*)(inBytes+header.scriptToLeadByte + 2))); // each entry = uint16
ds->swapArray16(ds, inBytes+header.scriptToLeadByte,
4 + (4 * indexCount) + (2 * dataCount),
outBytes+header.scriptToLeadByte, pErrorCode);
}
/* swap the lead byte to scripts */
if(header.leadByteToScript!=0) {
int indexCount = ds->readUInt16(*((uint16_t*)(inBytes+header.leadByteToScript))); // each entry = uint16
int dataCount = ds->readUInt16(*((uint16_t*)(inBytes+header.leadByteToScript + 2))); // each entry = uint16
ds->swapArray16(ds, inBytes+header.leadByteToScript,
4 + (2 * indexCount) + (2 * dataCount),
outBytes+header.leadByteToScript, pErrorCode);
}
}
return header.size;
}
// swap formatVersion 4 or 5 ----------------------------------------------- ***
// The following are copied from CollationDataReader, trading an awkward copy of constants
// for an awkward relocation of the i18n collationdatareader.h file into the common library.
// Keep them in sync!
enum {
IX_INDEXES_LENGTH, // 0
IX_OPTIONS,
IX_RESERVED2,
IX_RESERVED3,
IX_JAMO_CE32S_START, // 4
IX_REORDER_CODES_OFFSET,
IX_REORDER_TABLE_OFFSET,
IX_TRIE_OFFSET,
IX_RESERVED8_OFFSET, // 8
IX_CES_OFFSET,
IX_RESERVED10_OFFSET,
IX_CE32S_OFFSET,
IX_ROOT_ELEMENTS_OFFSET, // 12
IX_CONTEXTS_OFFSET,
IX_UNSAFE_BWD_OFFSET,
IX_FAST_LATIN_TABLE_OFFSET,
IX_SCRIPTS_OFFSET, // 16
IX_COMPRESSIBLE_BYTES_OFFSET,
IX_RESERVED18_OFFSET,
IX_TOTAL_SIZE
};
int32_t
swapFormatVersion4(const UDataSwapper *ds,
const void *inData, int32_t length, void *outData,
UErrorCode &errorCode) {
if(U_FAILURE(errorCode)) { return 0; }
const uint8_t *inBytes=(const uint8_t *)inData;
uint8_t *outBytes=(uint8_t *)outData;
const int32_t *inIndexes=(const int32_t *)inBytes;
int32_t indexes[IX_TOTAL_SIZE+1];
// Need at least IX_INDEXES_LENGTH and IX_OPTIONS.
if(0<=length && length<8) {
udata_printError(ds, "ucol_swap(formatVersion=4): too few bytes "
"(%d after header) for collation data\n",
length);
errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
return 0;
}
int32_t indexesLength=indexes[0]=udata_readInt32(ds, inIndexes[0]);
if(0<=length && length<(indexesLength*4)) {
udata_printError(ds, "ucol_swap(formatVersion=4): too few bytes "
"(%d after header) for collation data\n",
length);
errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
return 0;
}
for(int32_t i=1; i<=IX_TOTAL_SIZE && i<indexesLength; ++i) {
indexes[i]=udata_readInt32(ds, inIndexes[i]);
}
for(int32_t i=indexesLength; i<=IX_TOTAL_SIZE; ++i) {
indexes[i]=-1;
}
inIndexes=nullptr; // Make sure we do not accidentally use these instead of indexes[].
// Get the total length of the data.
int32_t size;
if(indexesLength>IX_TOTAL_SIZE) {
size=indexes[IX_TOTAL_SIZE];
} else if(indexesLength>IX_REORDER_CODES_OFFSET) {
size=indexes[indexesLength-1];
} else {
size=indexesLength*4;
}
if(length<0) { return size; }
if(length<size) {
udata_printError(ds, "ucol_swap(formatVersion=4): too few bytes "
"(%d after header) for collation data\n",
length);
errorCode=U_INDEX_OUTOFBOUNDS_ERROR;
return 0;
}
// Copy the data for inaccessible bytes and arrays of bytes.
if(inBytes!=outBytes) {
uprv_memcpy(outBytes, inBytes, size);
}
// Swap the int32_t indexes[].
ds->swapArray32(ds, inBytes, indexesLength * 4, outBytes, &errorCode);
// The following is a modified version of CollationDataReader::read().
// Here we use indexes[] not inIndexes[] because
// the inIndexes[] may not be in this machine's endianness.
int32_t index; // one of the indexes[] slots
int32_t offset; // byte offset for the index part
// int32_t length; // number of bytes in the index part
index = IX_REORDER_CODES_OFFSET;
offset = indexes[index];
length = indexes[index + 1] - offset;
if(length > 0) {
ds->swapArray32(ds, inBytes + offset, length, outBytes + offset, &errorCode);
}
// Skip the IX_REORDER_TABLE_OFFSET byte array.
index = IX_TRIE_OFFSET;
offset = indexes[index];
length = indexes[index + 1] - offset;
if(length > 0) {
utrie2_swap(ds, inBytes + offset, length, outBytes + offset, &errorCode);
}
index = IX_RESERVED8_OFFSET;
offset = indexes[index];
length = indexes[index + 1] - offset;
if(length > 0) {
udata_printError(ds, "ucol_swap(formatVersion=4): unknown data at IX_RESERVED8_OFFSET\n", length);
errorCode = U_UNSUPPORTED_ERROR;
return 0;
}
index = IX_CES_OFFSET;
offset = indexes[index];
length = indexes[index + 1] - offset;
if(length > 0) {
ds->swapArray64(ds, inBytes + offset, length, outBytes + offset, &errorCode);
}
index = IX_RESERVED10_OFFSET;
offset = indexes[index];
length = indexes[index + 1] - offset;
if(length > 0) {
udata_printError(ds, "ucol_swap(formatVersion=4): unknown data at IX_RESERVED10_OFFSET\n", length);
errorCode = U_UNSUPPORTED_ERROR;
return 0;
}
index = IX_CE32S_OFFSET;
offset = indexes[index];
length = indexes[index + 1] - offset;
if(length > 0) {
ds->swapArray32(ds, inBytes + offset, length, outBytes + offset, &errorCode);
}
index = IX_ROOT_ELEMENTS_OFFSET;
offset = indexes[index];
length = indexes[index + 1] - offset;
if(length > 0) {
ds->swapArray32(ds, inBytes + offset, length, outBytes + offset, &errorCode);
}
index = IX_CONTEXTS_OFFSET;
offset = indexes[index];
length = indexes[index + 1] - offset;
if(length > 0) {
ds->swapArray16(ds, inBytes + offset, length, outBytes + offset, &errorCode);
}
index = IX_UNSAFE_BWD_OFFSET;
offset = indexes[index];
length = indexes[index + 1] - offset;
if(length > 0) {
ds->swapArray16(ds, inBytes + offset, length, outBytes + offset, &errorCode);
}
index = IX_FAST_LATIN_TABLE_OFFSET;
offset = indexes[index];
length = indexes[index + 1] - offset;
if(length > 0) {
ds->swapArray16(ds, inBytes + offset, length, outBytes + offset, &errorCode);
}
index = IX_SCRIPTS_OFFSET;
offset = indexes[index];
length = indexes[index + 1] - offset;
if(length > 0) {
ds->swapArray16(ds, inBytes + offset, length, outBytes + offset, &errorCode);
}
// Skip the IX_COMPRESSIBLE_BYTES_OFFSET byte array.
index = IX_RESERVED18_OFFSET;
offset = indexes[index];
length = indexes[index + 1] - offset;
if(length > 0) {
udata_printError(ds, "ucol_swap(formatVersion=4): unknown data at IX_RESERVED18_OFFSET\n", length);
errorCode = U_UNSUPPORTED_ERROR;
return 0;
}
return size;
}
} // namespace
/* swap ICU collation data like ucadata.icu */
U_CAPI int32_t U_EXPORT2
ucol_swap(const UDataSwapper *ds,
const void *inData, int32_t length, void *outData,
UErrorCode *pErrorCode) {
if(U_FAILURE(*pErrorCode)) { return 0; }
/* udata_swapDataHeader checks the arguments */
int32_t headerSize=udata_swapDataHeader(ds, inData, length, outData, pErrorCode);
if(U_FAILURE(*pErrorCode)) {
// Try to swap the old format version which did not have a standard data header.
*pErrorCode=U_ZERO_ERROR;
return swapFormatVersion3(ds, inData, length, outData, pErrorCode);
}
/* check data format and format version */
const UDataInfo &info=*(const UDataInfo *)((const char *)inData+4);
if(!(
info.dataFormat[0]==0x55 && // dataFormat="UCol"
info.dataFormat[1]==0x43 &&
info.dataFormat[2]==0x6f &&
info.dataFormat[3]==0x6c &&
(3<=info.formatVersion[0] && info.formatVersion[0]<=5)
)) {
udata_printError(ds, "ucol_swap(): data format %02x.%02x.%02x.%02x "
"(format version %02x.%02x) is not recognized as collation data\n",
info.dataFormat[0], info.dataFormat[1],
info.dataFormat[2], info.dataFormat[3],
info.formatVersion[0], info.formatVersion[1]);
*pErrorCode=U_UNSUPPORTED_ERROR;
return 0;
}
inData=(const char *)inData+headerSize;
if(length>=0) { length-=headerSize; }
outData=(outData == nullptr) ? nullptr : (char *)outData+headerSize;
int32_t collationSize;
if(info.formatVersion[0]>=4) {
collationSize=swapFormatVersion4(ds, inData, length, outData, *pErrorCode);
} else {
collationSize=swapFormatVersion3(ds, inData, length, outData, pErrorCode);
}
if(U_SUCCESS(*pErrorCode)) {
return headerSize+collationSize;
} else {
return 0;
}
}
/* swap inverse UCA collation data (invuca.icu) */
U_CAPI int32_t U_EXPORT2
ucol_swapInverseUCA(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 InverseUCATableHeader *inHeader;
InverseUCATableHeader *outHeader;
InverseUCATableHeader header={ 0,0,0,0,0,{0,0,0,0},{0,0,0,0,0,0,0,0} };
/* udata_swapDataHeader checks the arguments */
headerSize=udata_swapDataHeader(ds, inData, length, outData, pErrorCode);
if(pErrorCode==nullptr || U_FAILURE(*pErrorCode)) {
return 0;
}
/* check data format and format version */
pInfo=(const UDataInfo *)((const char *)inData+4);
if(!(
pInfo->dataFormat[0]==0x49 && /* dataFormat="InvC" */
pInfo->dataFormat[1]==0x6e &&
pInfo->dataFormat[2]==0x76 &&
pInfo->dataFormat[3]==0x43 &&
pInfo->formatVersion[0]==2 &&
pInfo->formatVersion[1]>=1
)) {
udata_printError(ds, "ucol_swapInverseUCA(): data format %02x.%02x.%02x.%02x (format version %02x.%02x) is not an inverse UCA collation file\n",
pInfo->dataFormat[0], pInfo->dataFormat[1],
pInfo->dataFormat[2], pInfo->dataFormat[3],
pInfo->formatVersion[0], pInfo->formatVersion[1]);
*pErrorCode=U_UNSUPPORTED_ERROR;
return 0;
}
inBytes=(const uint8_t *)inData+headerSize;
outBytes=(uint8_t *)outData+headerSize;
inHeader=(const InverseUCATableHeader *)inBytes;
outHeader=(InverseUCATableHeader *)outBytes;
/*
* The inverse UCA collation binary must contain at least the InverseUCATableHeader,
* starting with its size field.
* sizeof(UCATableHeader)==8*4 in ICU 2.8
* check the length against the header size before reading the size field
*/
if(length<0) {
header.byteSize=udata_readInt32(ds, inHeader->byteSize);
} else if(
((length-headerSize)<(8*4) ||
(uint32_t)(length-headerSize)<(header.byteSize=udata_readInt32(ds, inHeader->byteSize)))
) {
udata_printError(ds, "ucol_swapInverseUCA(): too few bytes (%d after header) for inverse UCA collation data\n",
length);
*pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
return 0;
}
if(length>=0) {
/* copy everything, takes care of data that needs no swapping */
if(inBytes!=outBytes) {
uprv_memcpy(outBytes, inBytes, header.byteSize);
}
/* swap the necessary pieces in the order of their occurrence in the data */
/* read more of the InverseUCATableHeader (the byteSize field was read above) */
header.tableSize= ds->readUInt32(inHeader->tableSize);
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 */
Reference in New Issue View Git Blame Copy Permalink