530 lines
15 KiB
C++
530 lines
15 KiB
C++
// © 2016 and later: Unicode, Inc. and others.
|
|
// License & terms of use: http://www.unicode.org/copyright.html
|
|
/*
|
|
*******************************************************************************
|
|
*
|
|
* Copyright (C) 2002-2011, International Business Machines
|
|
* Corporation and others. All Rights Reserved.
|
|
*
|
|
*******************************************************************************
|
|
* file name: propsvec.c
|
|
* encoding: UTF-8
|
|
* tab size: 8 (not used)
|
|
* indentation:4
|
|
*
|
|
* created on: 2002feb22
|
|
* created by: Markus W. Scherer
|
|
*
|
|
* Store bits (Unicode character properties) in bit set vectors.
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include "unicode/utypes.h"
|
|
#include "cmemory.h"
|
|
#include "utrie.h"
|
|
#include "utrie2.h"
|
|
#include "uarrsort.h"
|
|
#include "propsvec.h"
|
|
#include "uassert.h"
|
|
|
|
struct UPropsVectors {
|
|
uint32_t *v;
|
|
int32_t columns; /* number of columns, plus two for start & limit values */
|
|
int32_t maxRows;
|
|
int32_t rows;
|
|
int32_t prevRow; /* search optimization: remember last row seen */
|
|
UBool isCompacted;
|
|
};
|
|
|
|
#define UPVEC_INITIAL_ROWS (1<<12)
|
|
#define UPVEC_MEDIUM_ROWS ((int32_t)1<<16)
|
|
#define UPVEC_MAX_ROWS (UPVEC_MAX_CP+1)
|
|
|
|
U_CAPI UPropsVectors * U_EXPORT2
|
|
upvec_open(int32_t columns, UErrorCode *pErrorCode) {
|
|
UPropsVectors *pv;
|
|
uint32_t *v, *row;
|
|
uint32_t cp;
|
|
|
|
if(U_FAILURE(*pErrorCode)) {
|
|
return NULL;
|
|
}
|
|
if(columns<1) {
|
|
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
|
|
return NULL;
|
|
}
|
|
columns+=2; /* count range start and limit columns */
|
|
|
|
pv=(UPropsVectors *)uprv_malloc(sizeof(UPropsVectors));
|
|
v=(uint32_t *)uprv_malloc(UPVEC_INITIAL_ROWS*columns*4);
|
|
if(pv==NULL || v==NULL) {
|
|
uprv_free(pv);
|
|
uprv_free(v);
|
|
*pErrorCode=U_MEMORY_ALLOCATION_ERROR;
|
|
return NULL;
|
|
}
|
|
uprv_memset(pv, 0, sizeof(UPropsVectors));
|
|
pv->v=v;
|
|
pv->columns=columns;
|
|
pv->maxRows=UPVEC_INITIAL_ROWS;
|
|
pv->rows=2+(UPVEC_MAX_CP-UPVEC_FIRST_SPECIAL_CP);
|
|
|
|
/* set the all-Unicode row and the special-value rows */
|
|
row=pv->v;
|
|
uprv_memset(row, 0, pv->rows*columns*4);
|
|
row[0]=0;
|
|
row[1]=0x110000;
|
|
row+=columns;
|
|
for(cp=UPVEC_FIRST_SPECIAL_CP; cp<=UPVEC_MAX_CP; ++cp) {
|
|
row[0]=cp;
|
|
row[1]=cp+1;
|
|
row+=columns;
|
|
}
|
|
return pv;
|
|
}
|
|
|
|
U_CAPI void U_EXPORT2
|
|
upvec_close(UPropsVectors *pv) {
|
|
if(pv!=NULL) {
|
|
uprv_free(pv->v);
|
|
uprv_free(pv);
|
|
}
|
|
}
|
|
|
|
static uint32_t *
|
|
_findRow(UPropsVectors *pv, UChar32 rangeStart) {
|
|
uint32_t *row;
|
|
int32_t columns, i, start, limit, prevRow;
|
|
|
|
columns=pv->columns;
|
|
limit=pv->rows;
|
|
prevRow=pv->prevRow;
|
|
|
|
/* check the vicinity of the last-seen row (start searching with an unrolled loop) */
|
|
row=pv->v+prevRow*columns;
|
|
if(rangeStart>=(UChar32)row[0]) {
|
|
if(rangeStart<(UChar32)row[1]) {
|
|
/* same row as last seen */
|
|
return row;
|
|
} else if(rangeStart<(UChar32)(row+=columns)[1]) {
|
|
/* next row after the last one */
|
|
pv->prevRow=prevRow+1;
|
|
return row;
|
|
} else if(rangeStart<(UChar32)(row+=columns)[1]) {
|
|
/* second row after the last one */
|
|
pv->prevRow=prevRow+2;
|
|
return row;
|
|
} else if((rangeStart-(UChar32)row[1])<10) {
|
|
/* we are close, continue looping */
|
|
prevRow+=2;
|
|
do {
|
|
++prevRow;
|
|
row+=columns;
|
|
} while(rangeStart>=(UChar32)row[1]);
|
|
pv->prevRow=prevRow;
|
|
return row;
|
|
}
|
|
} else if(rangeStart<(UChar32)pv->v[1]) {
|
|
/* the very first row */
|
|
pv->prevRow=0;
|
|
return pv->v;
|
|
}
|
|
|
|
/* do a binary search for the start of the range */
|
|
start=0;
|
|
while(start<limit-1) {
|
|
i=(start+limit)/2;
|
|
row=pv->v+i*columns;
|
|
if(rangeStart<(UChar32)row[0]) {
|
|
limit=i;
|
|
} else if(rangeStart<(UChar32)row[1]) {
|
|
pv->prevRow=i;
|
|
return row;
|
|
} else {
|
|
start=i;
|
|
}
|
|
}
|
|
|
|
/* must be found because all ranges together always cover all of Unicode */
|
|
pv->prevRow=start;
|
|
return pv->v+start*columns;
|
|
}
|
|
|
|
U_CAPI void U_EXPORT2
|
|
upvec_setValue(UPropsVectors *pv,
|
|
UChar32 start, UChar32 end,
|
|
int32_t column,
|
|
uint32_t value, uint32_t mask,
|
|
UErrorCode *pErrorCode) {
|
|
uint32_t *firstRow, *lastRow;
|
|
int32_t columns;
|
|
UChar32 limit;
|
|
UBool splitFirstRow, splitLastRow;
|
|
|
|
/* argument checking */
|
|
if(U_FAILURE(*pErrorCode)) {
|
|
return;
|
|
}
|
|
if( pv==NULL ||
|
|
start<0 || start>end || end>UPVEC_MAX_CP ||
|
|
column<0 || column>=(pv->columns-2)
|
|
) {
|
|
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
|
|
return;
|
|
}
|
|
if(pv->isCompacted) {
|
|
*pErrorCode=U_NO_WRITE_PERMISSION;
|
|
return;
|
|
}
|
|
limit=end+1;
|
|
|
|
/* initialize */
|
|
columns=pv->columns;
|
|
column+=2; /* skip range start and limit columns */
|
|
value&=mask;
|
|
|
|
/* find the rows whose ranges overlap with the input range */
|
|
|
|
/* find the first and last rows, always successful */
|
|
firstRow=_findRow(pv, start);
|
|
lastRow=_findRow(pv, end);
|
|
|
|
/*
|
|
* Rows need to be split if they partially overlap with the
|
|
* input range (only possible for the first and last rows)
|
|
* and if their value differs from the input value.
|
|
*/
|
|
splitFirstRow= (UBool)(start!=(UChar32)firstRow[0] && value!=(firstRow[column]&mask));
|
|
splitLastRow= (UBool)(limit!=(UChar32)lastRow[1] && value!=(lastRow[column]&mask));
|
|
|
|
/* split first/last rows if necessary */
|
|
if(splitFirstRow || splitLastRow) {
|
|
int32_t count, rows;
|
|
|
|
rows=pv->rows;
|
|
if((rows+splitFirstRow+splitLastRow)>pv->maxRows) {
|
|
uint32_t *newVectors;
|
|
int32_t newMaxRows;
|
|
|
|
if(pv->maxRows<UPVEC_MEDIUM_ROWS) {
|
|
newMaxRows=UPVEC_MEDIUM_ROWS;
|
|
} else if(pv->maxRows<UPVEC_MAX_ROWS) {
|
|
newMaxRows=UPVEC_MAX_ROWS;
|
|
} else {
|
|
/* Implementation bug, or UPVEC_MAX_ROWS too low. */
|
|
*pErrorCode=U_INTERNAL_PROGRAM_ERROR;
|
|
return;
|
|
}
|
|
newVectors=(uint32_t *)uprv_malloc(newMaxRows*columns*4);
|
|
if(newVectors==NULL) {
|
|
*pErrorCode=U_MEMORY_ALLOCATION_ERROR;
|
|
return;
|
|
}
|
|
uprv_memcpy(newVectors, pv->v, (size_t)rows*columns*4);
|
|
firstRow=newVectors+(firstRow-pv->v);
|
|
lastRow=newVectors+(lastRow-pv->v);
|
|
uprv_free(pv->v);
|
|
pv->v=newVectors;
|
|
pv->maxRows=newMaxRows;
|
|
}
|
|
|
|
/* count the number of row cells to move after the last row, and move them */
|
|
count = (int32_t)((pv->v+rows*columns)-(lastRow+columns));
|
|
if(count>0) {
|
|
uprv_memmove(
|
|
lastRow+(1+splitFirstRow+splitLastRow)*columns,
|
|
lastRow+columns,
|
|
count*4);
|
|
}
|
|
pv->rows=rows+splitFirstRow+splitLastRow;
|
|
|
|
/* split the first row, and move the firstRow pointer to the second part */
|
|
if(splitFirstRow) {
|
|
/* copy all affected rows up one and move the lastRow pointer */
|
|
count = (int32_t)((lastRow-firstRow)+columns);
|
|
uprv_memmove(firstRow+columns, firstRow, (size_t)count*4);
|
|
lastRow+=columns;
|
|
|
|
/* split the range and move the firstRow pointer */
|
|
firstRow[1]=firstRow[columns]=(uint32_t)start;
|
|
firstRow+=columns;
|
|
}
|
|
|
|
/* split the last row */
|
|
if(splitLastRow) {
|
|
/* copy the last row data */
|
|
uprv_memcpy(lastRow+columns, lastRow, (size_t)columns*4);
|
|
|
|
/* split the range and move the firstRow pointer */
|
|
lastRow[1]=lastRow[columns]=(uint32_t)limit;
|
|
}
|
|
}
|
|
|
|
/* set the "row last seen" to the last row for the range */
|
|
pv->prevRow=(int32_t)((lastRow-(pv->v))/columns);
|
|
|
|
/* set the input value in all remaining rows */
|
|
firstRow+=column;
|
|
lastRow+=column;
|
|
mask=~mask;
|
|
for(;;) {
|
|
*firstRow=(*firstRow&mask)|value;
|
|
if(firstRow==lastRow) {
|
|
break;
|
|
}
|
|
firstRow+=columns;
|
|
}
|
|
}
|
|
|
|
U_CAPI uint32_t U_EXPORT2
|
|
upvec_getValue(const UPropsVectors *pv, UChar32 c, int32_t column) {
|
|
uint32_t *row;
|
|
UPropsVectors *ncpv;
|
|
|
|
if(pv->isCompacted || c<0 || c>UPVEC_MAX_CP || column<0 || column>=(pv->columns-2)) {
|
|
return 0;
|
|
}
|
|
ncpv=(UPropsVectors *)pv;
|
|
row=_findRow(ncpv, c);
|
|
return row[2+column];
|
|
}
|
|
|
|
U_CAPI uint32_t * U_EXPORT2
|
|
upvec_getRow(const UPropsVectors *pv, int32_t rowIndex,
|
|
UChar32 *pRangeStart, UChar32 *pRangeEnd) {
|
|
uint32_t *row;
|
|
int32_t columns;
|
|
|
|
if(pv->isCompacted || rowIndex<0 || rowIndex>=pv->rows) {
|
|
return NULL;
|
|
}
|
|
|
|
columns=pv->columns;
|
|
row=pv->v+rowIndex*columns;
|
|
if(pRangeStart!=NULL) {
|
|
*pRangeStart=(UChar32)row[0];
|
|
}
|
|
if(pRangeEnd!=NULL) {
|
|
*pRangeEnd=(UChar32)row[1]-1;
|
|
}
|
|
return row+2;
|
|
}
|
|
|
|
static int32_t U_CALLCONV
|
|
upvec_compareRows(const void *context, const void *l, const void *r) {
|
|
const uint32_t *left=(const uint32_t *)l, *right=(const uint32_t *)r;
|
|
const UPropsVectors *pv=(const UPropsVectors *)context;
|
|
int32_t i, count, columns;
|
|
|
|
count=columns=pv->columns; /* includes start/limit columns */
|
|
|
|
/* start comparing after start/limit but wrap around to them */
|
|
i=2;
|
|
do {
|
|
if(left[i]!=right[i]) {
|
|
return left[i]<right[i] ? -1 : 1;
|
|
}
|
|
if(++i==columns) {
|
|
i=0;
|
|
}
|
|
} while(--count>0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
U_CAPI void U_EXPORT2
|
|
upvec_compact(UPropsVectors *pv, UPVecCompactHandler *handler, void *context, UErrorCode *pErrorCode) {
|
|
uint32_t *row;
|
|
int32_t i, columns, valueColumns, rows, count;
|
|
UChar32 start, limit;
|
|
|
|
/* argument checking */
|
|
if(U_FAILURE(*pErrorCode)) {
|
|
return;
|
|
}
|
|
if(handler==NULL) {
|
|
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
|
|
return;
|
|
}
|
|
if(pv->isCompacted) {
|
|
return;
|
|
}
|
|
|
|
/* Set the flag now: Sorting and compacting destroys the builder data structure. */
|
|
pv->isCompacted=true;
|
|
|
|
rows=pv->rows;
|
|
columns=pv->columns;
|
|
U_ASSERT(columns>=3); /* upvec_open asserts this */
|
|
valueColumns=columns-2; /* not counting start & limit */
|
|
|
|
/* sort the properties vectors to find unique vector values */
|
|
uprv_sortArray(pv->v, rows, columns*4,
|
|
upvec_compareRows, pv, false, pErrorCode);
|
|
if(U_FAILURE(*pErrorCode)) {
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Find and set the special values.
|
|
* This has to do almost the same work as the compaction below,
|
|
* to find the indexes where the special-value rows will move.
|
|
*/
|
|
row=pv->v;
|
|
count=-valueColumns;
|
|
for(i=0; i<rows; ++i) {
|
|
start=(UChar32)row[0];
|
|
|
|
/* count a new values vector if it is different from the current one */
|
|
if(count<0 || 0!=uprv_memcmp(row+2, row-valueColumns, valueColumns*4)) {
|
|
count+=valueColumns;
|
|
}
|
|
|
|
if(start>=UPVEC_FIRST_SPECIAL_CP) {
|
|
handler(context, start, start, count, row+2, valueColumns, pErrorCode);
|
|
if(U_FAILURE(*pErrorCode)) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
row+=columns;
|
|
}
|
|
|
|
/* count is at the beginning of the last vector, add valueColumns to include that last vector */
|
|
count+=valueColumns;
|
|
|
|
/* Call the handler once more to signal the start of delivering real values. */
|
|
handler(context, UPVEC_START_REAL_VALUES_CP, UPVEC_START_REAL_VALUES_CP,
|
|
count, row-valueColumns, valueColumns, pErrorCode);
|
|
if(U_FAILURE(*pErrorCode)) {
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Move vector contents up to a contiguous array with only unique
|
|
* vector values, and call the handler function for each vector.
|
|
*
|
|
* This destroys the Properties Vector structure and replaces it
|
|
* with an array of just vector values.
|
|
*/
|
|
row=pv->v;
|
|
count=-valueColumns;
|
|
for(i=0; i<rows; ++i) {
|
|
/* fetch these first before memmove() may overwrite them */
|
|
start=(UChar32)row[0];
|
|
limit=(UChar32)row[1];
|
|
|
|
/* add a new values vector if it is different from the current one */
|
|
if(count<0 || 0!=uprv_memcmp(row+2, pv->v+count, valueColumns*4)) {
|
|
count+=valueColumns;
|
|
uprv_memmove(pv->v+count, row+2, (size_t)valueColumns*4);
|
|
}
|
|
|
|
if(start<UPVEC_FIRST_SPECIAL_CP) {
|
|
handler(context, start, limit-1, count, pv->v+count, valueColumns, pErrorCode);
|
|
if(U_FAILURE(*pErrorCode)) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
row+=columns;
|
|
}
|
|
|
|
/* count is at the beginning of the last vector, add one to include that last vector */
|
|
pv->rows=count/valueColumns+1;
|
|
}
|
|
|
|
U_CAPI const uint32_t * U_EXPORT2
|
|
upvec_getArray(const UPropsVectors *pv, int32_t *pRows, int32_t *pColumns) {
|
|
if(!pv->isCompacted) {
|
|
return NULL;
|
|
}
|
|
if(pRows!=NULL) {
|
|
*pRows=pv->rows;
|
|
}
|
|
if(pColumns!=NULL) {
|
|
*pColumns=pv->columns-2;
|
|
}
|
|
return pv->v;
|
|
}
|
|
|
|
U_CAPI uint32_t * U_EXPORT2
|
|
upvec_cloneArray(const UPropsVectors *pv,
|
|
int32_t *pRows, int32_t *pColumns, UErrorCode *pErrorCode) {
|
|
uint32_t *clonedArray;
|
|
int32_t byteLength;
|
|
|
|
if(U_FAILURE(*pErrorCode)) {
|
|
return NULL;
|
|
}
|
|
if(!pv->isCompacted) {
|
|
*pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
|
|
return NULL;
|
|
}
|
|
byteLength=pv->rows*(pv->columns-2)*4;
|
|
clonedArray=(uint32_t *)uprv_malloc(byteLength);
|
|
if(clonedArray==NULL) {
|
|
*pErrorCode=U_MEMORY_ALLOCATION_ERROR;
|
|
return NULL;
|
|
}
|
|
uprv_memcpy(clonedArray, pv->v, byteLength);
|
|
if(pRows!=NULL) {
|
|
*pRows=pv->rows;
|
|
}
|
|
if(pColumns!=NULL) {
|
|
*pColumns=pv->columns-2;
|
|
}
|
|
return clonedArray;
|
|
}
|
|
|
|
U_CAPI UTrie2 * U_EXPORT2
|
|
upvec_compactToUTrie2WithRowIndexes(UPropsVectors *pv, UErrorCode *pErrorCode) {
|
|
UPVecToUTrie2Context toUTrie2={ NULL, 0, 0, 0 };
|
|
upvec_compact(pv, upvec_compactToUTrie2Handler, &toUTrie2, pErrorCode);
|
|
utrie2_freeze(toUTrie2.trie, UTRIE2_16_VALUE_BITS, pErrorCode);
|
|
if(U_FAILURE(*pErrorCode)) {
|
|
utrie2_close(toUTrie2.trie);
|
|
toUTrie2.trie=NULL;
|
|
}
|
|
return toUTrie2.trie;
|
|
}
|
|
|
|
/*
|
|
* TODO(markus): Add upvec_16BitsToUTrie2() function that enumerates all rows, extracts
|
|
* some 16-bit field and builds and returns a UTrie2.
|
|
*/
|
|
|
|
U_CAPI void U_CALLCONV
|
|
upvec_compactToUTrie2Handler(void *context,
|
|
UChar32 start, UChar32 end,
|
|
int32_t rowIndex, uint32_t *row, int32_t columns,
|
|
UErrorCode *pErrorCode) {
|
|
(void)row;
|
|
(void)columns;
|
|
UPVecToUTrie2Context *toUTrie2=(UPVecToUTrie2Context *)context;
|
|
if(start<UPVEC_FIRST_SPECIAL_CP) {
|
|
utrie2_setRange32(toUTrie2->trie, start, end, (uint32_t)rowIndex, true, pErrorCode);
|
|
} else {
|
|
switch(start) {
|
|
case UPVEC_INITIAL_VALUE_CP:
|
|
toUTrie2->initialValue=rowIndex;
|
|
break;
|
|
case UPVEC_ERROR_VALUE_CP:
|
|
toUTrie2->errorValue=rowIndex;
|
|
break;
|
|
case UPVEC_START_REAL_VALUES_CP:
|
|
toUTrie2->maxValue=rowIndex;
|
|
if(rowIndex>0xffff) {
|
|
/* too many rows for a 16-bit trie */
|
|
*pErrorCode=U_INDEX_OUTOFBOUNDS_ERROR;
|
|
} else {
|
|
toUTrie2->trie=utrie2_open(toUTrie2->initialValue,
|
|
toUTrie2->errorValue, pErrorCode);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|