447 lines
16 KiB
C++
447 lines
16 KiB
C++
/*
|
|
***************************************************************************
|
|
* Copyright (C) 1999-2010 International Business Machines Corporation *
|
|
* and others. All rights reserved. *
|
|
***************************************************************************
|
|
*/
|
|
|
|
#include "unicode/utypes.h"
|
|
|
|
#if !UCONFIG_NO_BREAK_ITERATION
|
|
|
|
#include "unicode/utypes.h"
|
|
#include "rbbidata.h"
|
|
#include "rbbirb.h"
|
|
#include "utrie.h"
|
|
#include "udatamem.h"
|
|
#include "cmemory.h"
|
|
#include "cstring.h"
|
|
#include "umutex.h"
|
|
|
|
#include "uassert.h"
|
|
|
|
|
|
//-----------------------------------------------------------------------------------
|
|
//
|
|
// Trie access folding function. Copied as-is from properties code in uchar.c
|
|
//
|
|
//-----------------------------------------------------------------------------------
|
|
U_CDECL_BEGIN
|
|
static int32_t U_CALLCONV
|
|
getFoldingOffset(uint32_t data) {
|
|
/* if bit 15 is set, then the folding offset is in bits 14..0 of the 16-bit trie result */
|
|
if(data&0x8000) {
|
|
return (int32_t)(data&0x7fff);
|
|
} else {
|
|
return 0;
|
|
}
|
|
}
|
|
U_CDECL_END
|
|
|
|
U_NAMESPACE_BEGIN
|
|
|
|
//-----------------------------------------------------------------------------
|
|
//
|
|
// Constructors.
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
RBBIDataWrapper::RBBIDataWrapper(const RBBIDataHeader *data, UErrorCode &status) {
|
|
init(data, status);
|
|
}
|
|
|
|
RBBIDataWrapper::RBBIDataWrapper(const RBBIDataHeader *data, enum EDontAdopt, UErrorCode &status) {
|
|
init(data, status);
|
|
fDontFreeData = TRUE;
|
|
}
|
|
|
|
RBBIDataWrapper::RBBIDataWrapper(UDataMemory* udm, UErrorCode &status) {
|
|
const RBBIDataHeader *d = (const RBBIDataHeader *)
|
|
// ((char *)&(udm->pHeader->info) + udm->pHeader->info.size);
|
|
// taking into consideration the padding added in by udata_write
|
|
((char *)(udm->pHeader) + udm->pHeader->dataHeader.headerSize);
|
|
init(d, status);
|
|
fUDataMem = udm;
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
//
|
|
// init(). Does most of the work of construction, shared between the
|
|
// constructors.
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
void RBBIDataWrapper::init(const RBBIDataHeader *data, UErrorCode &status) {
|
|
if (U_FAILURE(status)) {
|
|
return;
|
|
}
|
|
fHeader = data;
|
|
if (fHeader->fMagic != 0xb1a0 || fHeader->fFormatVersion[0] != 3)
|
|
{
|
|
status = U_INVALID_FORMAT_ERROR;
|
|
return;
|
|
}
|
|
// Note: in ICU version 3.2 and earlier, there was a formatVersion 1
|
|
// that is no longer supported. At that time fFormatVersion was
|
|
// an int32_t field, rather than an array of 4 bytes.
|
|
|
|
fDontFreeData = FALSE;
|
|
fUDataMem = NULL;
|
|
fReverseTable = NULL;
|
|
fSafeFwdTable = NULL;
|
|
fSafeRevTable = NULL;
|
|
if (data->fFTableLen != 0) {
|
|
fForwardTable = (RBBIStateTable *)((char *)data + fHeader->fFTable);
|
|
}
|
|
if (data->fRTableLen != 0) {
|
|
fReverseTable = (RBBIStateTable *)((char *)data + fHeader->fRTable);
|
|
}
|
|
if (data->fSFTableLen != 0) {
|
|
fSafeFwdTable = (RBBIStateTable *)((char *)data + fHeader->fSFTable);
|
|
}
|
|
if (data->fSRTableLen != 0) {
|
|
fSafeRevTable = (RBBIStateTable *)((char *)data + fHeader->fSRTable);
|
|
}
|
|
|
|
|
|
utrie_unserialize(&fTrie,
|
|
(uint8_t *)data + fHeader->fTrie,
|
|
fHeader->fTrieLen,
|
|
&status);
|
|
if (U_FAILURE(status)) {
|
|
return;
|
|
}
|
|
fTrie.getFoldingOffset=getFoldingOffset;
|
|
|
|
|
|
fRuleSource = (UChar *)((char *)data + fHeader->fRuleSource);
|
|
fRuleString.setTo(TRUE, fRuleSource, -1);
|
|
U_ASSERT(data->fRuleSourceLen > 0);
|
|
|
|
fRuleStatusTable = (int32_t *)((char *)data + fHeader->fStatusTable);
|
|
fStatusMaxIdx = data->fStatusTableLen / sizeof(int32_t);
|
|
|
|
fRefCount = 1;
|
|
|
|
#ifdef RBBI_DEBUG
|
|
char *debugEnv = getenv("U_RBBIDEBUG");
|
|
if (debugEnv && uprv_strstr(debugEnv, "data")) {this->printData();}
|
|
#endif
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
//
|
|
// Destructor. Don't call this - use removeReference() instead.
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
RBBIDataWrapper::~RBBIDataWrapper() {
|
|
U_ASSERT(fRefCount == 0);
|
|
if (fUDataMem) {
|
|
udata_close(fUDataMem);
|
|
} else if (!fDontFreeData) {
|
|
uprv_free((void *)fHeader);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
//
|
|
// Operator == Consider two RBBIDataWrappers to be equal if they
|
|
// refer to the same underlying data. Although
|
|
// the data wrappers are normally shared between
|
|
// iterator instances, it's possible to independently
|
|
// open the same data twice, and get two instances, which
|
|
// should still be ==.
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
UBool RBBIDataWrapper::operator ==(const RBBIDataWrapper &other) const {
|
|
if (fHeader == other.fHeader) {
|
|
return TRUE;
|
|
}
|
|
if (fHeader->fLength != other.fHeader->fLength) {
|
|
return FALSE;
|
|
}
|
|
if (uprv_memcmp(fHeader, other.fHeader, fHeader->fLength) == 0) {
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
int32_t RBBIDataWrapper::hashCode() {
|
|
return fHeader->fFTableLen;
|
|
}
|
|
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
//
|
|
// Reference Counting. A single RBBIDataWrapper object is shared among
|
|
// however many RulesBasedBreakIterator instances are
|
|
// referencing the same data.
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
void RBBIDataWrapper::removeReference() {
|
|
if (umtx_atomic_dec(&fRefCount) == 0) {
|
|
delete this;
|
|
}
|
|
}
|
|
|
|
|
|
RBBIDataWrapper *RBBIDataWrapper::addReference() {
|
|
umtx_atomic_inc(&fRefCount);
|
|
return this;
|
|
}
|
|
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
//
|
|
// getRuleSourceString
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
const UnicodeString &RBBIDataWrapper::getRuleSourceString() const {
|
|
return fRuleString;
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
//
|
|
// print - debugging function to dump the runtime data tables.
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
#ifdef RBBI_DEBUG
|
|
void RBBIDataWrapper::printTable(const char *heading, const RBBIStateTable *table) {
|
|
uint32_t c;
|
|
uint32_t s;
|
|
|
|
RBBIDebugPrintf(" %s\n", heading);
|
|
|
|
RBBIDebugPrintf("State | Acc LA TagIx");
|
|
for (c=0; c<fHeader->fCatCount; c++) {RBBIDebugPrintf("%3d ", c);}
|
|
RBBIDebugPrintf("\n------|---------------"); for (c=0;c<fHeader->fCatCount; c++) {
|
|
RBBIDebugPrintf("----");
|
|
}
|
|
RBBIDebugPrintf("\n");
|
|
|
|
if (table == NULL) {
|
|
RBBIDebugPrintf(" N U L L T A B L E\n\n");
|
|
return;
|
|
}
|
|
for (s=0; s<table->fNumStates; s++) {
|
|
RBBIStateTableRow *row = (RBBIStateTableRow *)
|
|
(table->fTableData + (table->fRowLen * s));
|
|
RBBIDebugPrintf("%4d | %3d %3d %3d ", s, row->fAccepting, row->fLookAhead, row->fTagIdx);
|
|
for (c=0; c<fHeader->fCatCount; c++) {
|
|
RBBIDebugPrintf("%3d ", row->fNextState[c]);
|
|
}
|
|
RBBIDebugPrintf("\n");
|
|
}
|
|
RBBIDebugPrintf("\n");
|
|
}
|
|
#endif
|
|
|
|
|
|
#ifdef RBBI_DEBUG
|
|
void RBBIDataWrapper::printData() {
|
|
RBBIDebugPrintf("RBBI Data at %p\n", (void *)fHeader);
|
|
RBBIDebugPrintf(" Version = {%d %d %d %d}\n", fHeader->fFormatVersion[0], fHeader->fFormatVersion[1],
|
|
fHeader->fFormatVersion[2], fHeader->fFormatVersion[3]);
|
|
RBBIDebugPrintf(" total length of data = %d\n", fHeader->fLength);
|
|
RBBIDebugPrintf(" number of character categories = %d\n\n", fHeader->fCatCount);
|
|
|
|
printTable("Forward State Transition Table", fForwardTable);
|
|
printTable("Reverse State Transition Table", fReverseTable);
|
|
printTable("Safe Forward State Transition Table", fSafeFwdTable);
|
|
printTable("Safe Reverse State Transition Table", fSafeRevTable);
|
|
|
|
RBBIDebugPrintf("\nOrignal Rules source:\n");
|
|
for (int32_t c=0; fRuleSource[c] != 0; c++) {
|
|
RBBIDebugPrintf("%c", fRuleSource[c]);
|
|
}
|
|
RBBIDebugPrintf("\n\n");
|
|
}
|
|
#endif
|
|
|
|
|
|
U_NAMESPACE_END
|
|
U_NAMESPACE_USE
|
|
|
|
//-----------------------------------------------------------------------------
|
|
//
|
|
// ubrk_swap - byte swap and char encoding swap of RBBI data
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
|
|
U_CAPI int32_t U_EXPORT2
|
|
ubrk_swap(const UDataSwapper *ds, const void *inData, int32_t length, void *outData,
|
|
UErrorCode *status) {
|
|
|
|
if (status == NULL || U_FAILURE(*status)) {
|
|
return 0;
|
|
}
|
|
if(ds==NULL || inData==NULL || length<-1 || (length>0 && outData==NULL)) {
|
|
*status=U_ILLEGAL_ARGUMENT_ERROR;
|
|
return 0;
|
|
}
|
|
|
|
//
|
|
// Check that the data header is for for break data.
|
|
// (Header contents are defined in genbrk.cpp)
|
|
//
|
|
const UDataInfo *pInfo = (const UDataInfo *)((const char *)inData+4);
|
|
if(!( pInfo->dataFormat[0]==0x42 && /* dataFormat="Brk " */
|
|
pInfo->dataFormat[1]==0x72 &&
|
|
pInfo->dataFormat[2]==0x6b &&
|
|
pInfo->dataFormat[3]==0x20 &&
|
|
pInfo->formatVersion[0]==3 )) {
|
|
udata_printError(ds, "ubrk_swap(): data format %02x.%02x.%02x.%02x (format version %02x) is not recognized\n",
|
|
pInfo->dataFormat[0], pInfo->dataFormat[1],
|
|
pInfo->dataFormat[2], pInfo->dataFormat[3],
|
|
pInfo->formatVersion[0]);
|
|
*status=U_UNSUPPORTED_ERROR;
|
|
return 0;
|
|
}
|
|
|
|
//
|
|
// Swap the data header. (This is the generic ICU Data Header, not the RBBI Specific
|
|
// RBBIDataHeader). This swap also conveniently gets us
|
|
// the size of the ICU d.h., which lets us locate the start
|
|
// of the RBBI specific data.
|
|
//
|
|
int32_t headerSize=udata_swapDataHeader(ds, inData, length, outData, status);
|
|
|
|
|
|
//
|
|
// Get the RRBI Data Header, and check that it appears to be OK.
|
|
//
|
|
// Note: ICU 3.2 and earlier, RBBIDataHeader::fDataFormat was actually
|
|
// an int32_t with a value of 1. Starting with ICU 3.4,
|
|
// RBBI's fDataFormat matches the dataFormat field from the
|
|
// UDataInfo header, four int8_t bytes. The value is {3,1,0,0}
|
|
//
|
|
const uint8_t *inBytes =(const uint8_t *)inData+headerSize;
|
|
RBBIDataHeader *rbbiDH = (RBBIDataHeader *)inBytes;
|
|
if (ds->readUInt32(rbbiDH->fMagic) != 0xb1a0 ||
|
|
rbbiDH->fFormatVersion[0] != 3 ||
|
|
ds->readUInt32(rbbiDH->fLength) < sizeof(RBBIDataHeader))
|
|
{
|
|
udata_printError(ds, "ubrk_swap(): RBBI Data header is invalid.\n");
|
|
*status=U_UNSUPPORTED_ERROR;
|
|
return 0;
|
|
}
|
|
|
|
//
|
|
// Prefight operation? Just return the size
|
|
//
|
|
int32_t breakDataLength = ds->readUInt32(rbbiDH->fLength);
|
|
int32_t totalSize = headerSize + breakDataLength;
|
|
if (length < 0) {
|
|
return totalSize;
|
|
}
|
|
|
|
//
|
|
// Check that length passed in is consistent with length from RBBI data header.
|
|
//
|
|
if (length < totalSize) {
|
|
udata_printError(ds, "ubrk_swap(): too few bytes (%d after ICU Data header) for break data.\n",
|
|
breakDataLength);
|
|
*status=U_INDEX_OUTOFBOUNDS_ERROR;
|
|
return 0;
|
|
}
|
|
|
|
|
|
//
|
|
// Swap the Data. Do the data itself first, then the RBBI Data Header, because
|
|
// we need to reference the header to locate the data, and an
|
|
// inplace swap of the header leaves it unusable.
|
|
//
|
|
uint8_t *outBytes = (uint8_t *)outData + headerSize;
|
|
RBBIDataHeader *outputDH = (RBBIDataHeader *)outBytes;
|
|
|
|
int32_t tableStartOffset;
|
|
int32_t tableLength;
|
|
|
|
//
|
|
// If not swapping in place, zero out the output buffer before starting.
|
|
// Individual tables and other data items within are aligned to 8 byte boundaries
|
|
// when originally created. Any unused space between items needs to be zero.
|
|
//
|
|
if (inBytes != outBytes) {
|
|
uprv_memset(outBytes, 0, breakDataLength);
|
|
}
|
|
|
|
//
|
|
// Each state table begins with several 32 bit fields. Calculate the size
|
|
// in bytes of these.
|
|
//
|
|
int32_t topSize = offsetof(RBBIStateTable, fTableData);
|
|
|
|
// Forward state table.
|
|
tableStartOffset = ds->readUInt32(rbbiDH->fFTable);
|
|
tableLength = ds->readUInt32(rbbiDH->fFTableLen);
|
|
|
|
if (tableLength > 0) {
|
|
ds->swapArray32(ds, inBytes+tableStartOffset, topSize,
|
|
outBytes+tableStartOffset, status);
|
|
ds->swapArray16(ds, inBytes+tableStartOffset+topSize, tableLength-topSize,
|
|
outBytes+tableStartOffset+topSize, status);
|
|
}
|
|
|
|
// Reverse state table. Same layout as forward table, above.
|
|
tableStartOffset = ds->readUInt32(rbbiDH->fRTable);
|
|
tableLength = ds->readUInt32(rbbiDH->fRTableLen);
|
|
|
|
if (tableLength > 0) {
|
|
ds->swapArray32(ds, inBytes+tableStartOffset, topSize,
|
|
outBytes+tableStartOffset, status);
|
|
ds->swapArray16(ds, inBytes+tableStartOffset+topSize, tableLength-topSize,
|
|
outBytes+tableStartOffset+topSize, status);
|
|
}
|
|
|
|
// Safe Forward state table. Same layout as forward table, above.
|
|
tableStartOffset = ds->readUInt32(rbbiDH->fSFTable);
|
|
tableLength = ds->readUInt32(rbbiDH->fSFTableLen);
|
|
|
|
if (tableLength > 0) {
|
|
ds->swapArray32(ds, inBytes+tableStartOffset, topSize,
|
|
outBytes+tableStartOffset, status);
|
|
ds->swapArray16(ds, inBytes+tableStartOffset+topSize, tableLength-topSize,
|
|
outBytes+tableStartOffset+topSize, status);
|
|
}
|
|
|
|
// Safe Reverse state table. Same layout as forward table, above.
|
|
tableStartOffset = ds->readUInt32(rbbiDH->fSRTable);
|
|
tableLength = ds->readUInt32(rbbiDH->fSRTableLen);
|
|
|
|
if (tableLength > 0) {
|
|
ds->swapArray32(ds, inBytes+tableStartOffset, topSize,
|
|
outBytes+tableStartOffset, status);
|
|
ds->swapArray16(ds, inBytes+tableStartOffset+topSize, tableLength-topSize,
|
|
outBytes+tableStartOffset+topSize, status);
|
|
}
|
|
|
|
// Trie table for character categories
|
|
utrie_swap(ds, inBytes+ds->readUInt32(rbbiDH->fTrie), ds->readUInt32(rbbiDH->fTrieLen),
|
|
outBytes+ds->readUInt32(rbbiDH->fTrie), status);
|
|
|
|
// Source Rules Text. It's UChar data
|
|
ds->swapArray16(ds, inBytes+ds->readUInt32(rbbiDH->fRuleSource), ds->readUInt32(rbbiDH->fRuleSourceLen),
|
|
outBytes+ds->readUInt32(rbbiDH->fRuleSource), status);
|
|
|
|
// Table of rule status values. It's all int_32 values
|
|
ds->swapArray32(ds, inBytes+ds->readUInt32(rbbiDH->fStatusTable), ds->readUInt32(rbbiDH->fStatusTableLen),
|
|
outBytes+ds->readUInt32(rbbiDH->fStatusTable), status);
|
|
|
|
// And, last, the header.
|
|
// It is all int32_t values except for fFormataVersion, which is an array of four bytes.
|
|
// Swap the whole thing as int32_t, then re-swap the one field.
|
|
//
|
|
ds->swapArray32(ds, inBytes, sizeof(RBBIDataHeader), outBytes, status);
|
|
ds->swapArray32(ds, outputDH->fFormatVersion, 4, outputDH->fFormatVersion, status);
|
|
|
|
return totalSize;
|
|
}
|
|
|
|
|
|
#endif /* #if !UCONFIG_NO_BREAK_ITERATION */
|