580 lines
22 KiB
C++
580 lines
22 KiB
C++
/*
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*******************************************************************************
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*
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* Copyright (C) 2001, 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: ucaelems.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 02/22/2001
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* created by: Vladimir Weinstein
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*
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* This program reads the Franctional UCA table and generates
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* internal format for UCA table as well as inverse UCA table.
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* It then writes binary files containing the data: ucadata.dat
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* & invuca.dat
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*
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* date name comments
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* 03/02/2001 synwee added setMaxExpansion
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*/
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#include "ucaelems.h"
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#include "unicode/uchar.h"
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void uprv_uca_reverseElement(ExpansionTable *expansions, UCAElements *el) {
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int32_t i = 0;
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UChar temp;
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uint32_t tempCE = 0, expansion = 0;
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UErrorCode status = U_ZERO_ERROR;
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for(i = 0; i<el->cSize/2; i++) {
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temp = el->cPoints[i];
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el->cPoints[i] = el->cPoints[el->cSize-i-1];
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el->cPoints[el->cSize-i-1] = temp;
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}
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if(el->noOfCEs>1) { /* this is an expansion that needs to be reversed and added - also, we need to change the mapValue */
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for(i = 0; i<el->noOfCEs/2; i++) {
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tempCE = el->CEs[i];
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el->CEs[i] = el->CEs[el->noOfCEs-i-1];
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el->CEs[el->noOfCEs-i-1] = tempCE;
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}
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expansion = UCOL_SPECIAL_FLAG | (EXPANSION_TAG<<UCOL_TAG_SHIFT)
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| ((uprv_uca_addExpansion(expansions, el->CEs[0], &status)+(paddedsize(sizeof(UCATableHeader))>>2))<<4)
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& 0xFFFFF0;
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for(i = 1; i<el->noOfCEs; i++) {
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uprv_uca_addExpansion(expansions, el->CEs[i], &status);
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}
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if(el->noOfCEs <= 0xF) {
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expansion |= el->noOfCEs;
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} else {
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uprv_uca_addExpansion(expansions, 0, &status);
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}
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el->mapCE = expansion;
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}
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}
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int32_t uprv_uca_addExpansion(ExpansionTable *expansions, uint32_t value, UErrorCode *status) {
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if(U_FAILURE(*status)) {
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return 0;
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}
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if(expansions->CEs == NULL) {
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expansions->CEs = (uint32_t *)malloc(INIT_EXP_TABLE_SIZE*sizeof(uint32_t));
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expansions->size = INIT_EXP_TABLE_SIZE;
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expansions->position = 0;
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}
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if(expansions->position == expansions->size) {
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uint32_t *newData = (uint32_t *)realloc(expansions->CEs, 2*expansions->size*sizeof(uint32_t));
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if(newData == NULL) {
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fprintf(stderr, "out of memory for expansions\n");
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*status = U_MEMORY_ALLOCATION_ERROR;
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return -1;
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}
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expansions->CEs = newData;
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expansions->size *= 2;
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}
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expansions->CEs[expansions->position] = value;
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return(expansions->position++);
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}
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tempUCATable * uprv_uca_initTempTable(UCATableHeader *image, UErrorCode *status) {
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tempUCATable *t = (tempUCATable *)uprv_malloc(sizeof(tempUCATable));
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t->image = image;
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t->expansions = (ExpansionTable *)uprv_malloc(sizeof(ExpansionTable));
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uprv_memset(t->expansions, 0, sizeof(ExpansionTable));
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t->mapping = ucmp32_open(UCOL_NOT_FOUND);
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t->contractions = uprv_cnttab_open(t->mapping, status);
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t->maxExpansions = (MaxExpansionTable *)uprv_malloc(
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sizeof(MaxExpansionTable));
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t->maxExpansions->size = 0;
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t->unsafeCP = (uint8_t *)uprv_malloc(UCOL_UNSAFECP_TABLE_SIZE);
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uprv_memset(t->unsafeCP, 0, UCOL_UNSAFECP_TABLE_SIZE);
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return t;
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}
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void uprv_uca_closeTempTable(tempUCATable *t) {
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uprv_free(t->expansions->CEs);
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uprv_free(t->expansions);
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uprv_cnttab_close(t->contractions);
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ucmp32_close(t->mapping);
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uprv_free(t->maxExpansions->endExpansionCE);
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uprv_free(t->maxExpansions->expansionCESize);
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uprv_free(t->maxExpansions);
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uprv_free(t->unsafeCP);
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uprv_free(t);
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}
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/**
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* Looks for the maximum length of all expansion sequences ending with the same
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* collation element. The size required for maxexpansion and maxsize is
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* returned if the arrays are too small.
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* @param endexpansion the last expansion collation element to be added
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* @param expansionsize size of the expansion
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* @param maxexpansion data structure to store the maximum expansion data.
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* @param status error status
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* @returns size of the maxexpansion and maxsize used.
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*/
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int uprv_uca_setMaxExpansion(uint32_t endexpansion,
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uint8_t expansionsize,
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MaxExpansionTable *maxexpansion,
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UErrorCode *status)
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{
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if (maxexpansion->size == 0) {
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maxexpansion->endExpansionCE =
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(uint32_t *)uprv_malloc(INIT_EXP_TABLE_SIZE * sizeof(int32_t));
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*(maxexpansion->endExpansionCE) = 0;
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maxexpansion->expansionCESize =
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(uint8_t *)uprv_malloc(INIT_EXP_TABLE_SIZE * sizeof(uint8_t));
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*(maxexpansion->expansionCESize) = 0;
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maxexpansion->size = INIT_EXP_TABLE_SIZE;
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maxexpansion->position = 0;
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}
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if (maxexpansion->position == maxexpansion->size) {
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uint32_t *neweece = (uint32_t *)uprv_realloc(maxexpansion->endExpansionCE,
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2 * maxexpansion->size * sizeof(int32_t));
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uint8_t *neweces = (uint8_t *)uprv_realloc(maxexpansion->expansionCESize,
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2 * maxexpansion->size * sizeof(uint8_t));
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if (neweece == NULL || neweces == NULL) {
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fprintf(stderr, "out of memory for maxExpansions\n");
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*status = U_MEMORY_ALLOCATION_ERROR;
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return -1;
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}
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maxexpansion->endExpansionCE = neweece;
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maxexpansion->expansionCESize = neweces;
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maxexpansion->size *= 2;
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}
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uint32_t *pendexpansionce = maxexpansion->endExpansionCE;
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uint8_t *pexpansionsize = maxexpansion->expansionCESize;
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int pos = maxexpansion->position;
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uint32_t *start = pendexpansionce;
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uint32_t *limit = pendexpansionce + pos;
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/* using binary search to determine if last expansion element is
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already in the array */
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uint32_t *mid;
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int result = -1;
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while (start < limit - 1) {
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mid = start + ((limit - start) >> 1);
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if (endexpansion <= *mid) {
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limit = mid;
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}
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else {
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start = mid;
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}
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}
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if (*start == endexpansion) {
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result = start - pendexpansionce;
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}
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else
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if (*limit == endexpansion) {
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result = limit - pendexpansionce;
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}
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if (result > -1) {
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/* found the ce in expansion, we'll just modify the size if it is
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smaller */
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uint8_t *currentsize = pexpansionsize + result;
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if (*currentsize < expansionsize) {
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*currentsize = expansionsize;
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}
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}
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else {
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/* we'll need to squeeze the value into the array.
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initial implementation. */
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/* shifting the subarray down by 1 */
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int shiftsize = (pendexpansionce + pos) - start;
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uint32_t *shiftpos = start + 1;
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uint8_t *sizeshiftpos = pexpansionsize + (shiftpos - pendexpansionce);
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/* okay need to rearrange the array into sorted order */
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if (shiftsize == 0 || *(pendexpansionce + pos) < endexpansion) {
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*(pendexpansionce + pos + 1) = endexpansion;
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*(pexpansionsize + pos + 1) = expansionsize;
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}
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else {
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uprv_memmove(shiftpos + 1, shiftpos, shiftsize * sizeof(int32_t));
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uprv_memmove(sizeshiftpos + 1, sizeshiftpos,
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shiftsize * sizeof(uint8_t));
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*shiftpos = endexpansion;
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*sizeshiftpos = expansionsize;
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}
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maxexpansion->position ++;
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/* test */
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int temp;
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UBool found = FALSE;
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for (temp = 0; temp < maxexpansion->position; temp ++) {
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if (pendexpansionce[temp] >= pendexpansionce[temp + 1]) {
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fprintf(stderr, "expansions %d\n", temp);
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}
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if (pendexpansionce[temp] == endexpansion) {
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found =TRUE;
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if (pexpansionsize[temp] < expansionsize) {
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fprintf(stderr, "expansions size %d\n", temp);
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}
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}
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}
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if (pendexpansionce[temp] == endexpansion) {
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found =TRUE;
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if (pexpansionsize[temp] < expansionsize) {
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fprintf(stderr, "expansions size %d\n", temp);
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}
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}
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if (!found)
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fprintf(stderr, "expansion not found %d\n", temp);
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}
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return maxexpansion->position;
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}
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static void unsafeCPSet(uint8_t *table, UChar c) {
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uint32_t hash;
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uint8_t *htByte;
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hash = c;
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if (hash >= UCOL_UNSAFECP_TABLE_SIZE*8) {
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if (hash >= 0xd800 && hash <= 0xf8ff) {
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/* Part of a surrogate, or in private use area. */
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/* These don't go in the table */
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return;
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}
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hash = (hash & UCOL_UNSAFECP_TABLE_MASK) + 256;
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}
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htByte = &table[hash>>3];
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*htByte |= (1 << (hash & 7));
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}
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/* to the UnsafeCP hash table, add all chars with combining class != 0 */
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void uprv_uca_unsafeCPAddCCNZ(tempUCATable *t) {
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UChar c;
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for (c=0; c<0xffff; c++) {
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if (u_getCombiningClass(c) != 0)
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unsafeCPSet(t->unsafeCP, c);
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}
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}
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/* This adds a read element, while testing for existence */
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uint32_t uprv_uca_addAnElement(tempUCATable *t, UCAElements *element, UErrorCode *status) {
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CompactIntArray *mapping = t->mapping;
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ExpansionTable *expansions = t->expansions;
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CntTable *contractions = t->contractions;
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int32_t i = 1;
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uint32_t expansion = 0;
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uint32_t CE;
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if(U_FAILURE(*status)) {
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return 0xFFFF;
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}
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if(element->noOfCEs == 1) {
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if(element->isThai == FALSE) {
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element->mapCE = element->CEs[0];
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} else { /* add thai - totally bad here */
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expansion = UCOL_SPECIAL_FLAG | (THAI_TAG<<UCOL_TAG_SHIFT)
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| ((uprv_uca_addExpansion(expansions, element->CEs[0], status)+(paddedsize(sizeof(UCATableHeader))>>2))<<4)
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| 0x1;
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element->mapCE = expansion;
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}
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} else {
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static int count = 0;
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expansion = UCOL_SPECIAL_FLAG | (EXPANSION_TAG<<UCOL_TAG_SHIFT)
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| ((uprv_uca_addExpansion(expansions, element->CEs[0], status)+(paddedsize(sizeof(UCATableHeader))>>2))<<4)
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& 0xFFFFF0;
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for(i = 1; i<element->noOfCEs; i++) {
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uprv_uca_addExpansion(expansions, element->CEs[i], status);
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}
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if(element->noOfCEs <= 0xF) {
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expansion |= element->noOfCEs;
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} else {
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uprv_uca_addExpansion(expansions, 0, status);
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}
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element->mapCE = expansion;
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uprv_uca_setMaxExpansion(element->CEs[element->noOfCEs - 1],
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(uint8_t)element->noOfCEs,
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t->maxExpansions,
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status);
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}
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CE = ucmp32_get(mapping, element->cPoints[0]);
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if(element->cSize > 1) { /* we're adding a contraction */
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int32_t i;
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for (i=1; i<element->cSize; i++) { /* First add contraction chars to unsafe CP hash table */
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unsafeCPSet(t->unsafeCP, element->cPoints[i]);
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}
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/* then we need to deal with it */
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/* we could aready have something in table - or we might not */
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/* The fact is that we want to add or modify an existing contraction */
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/* and add it backwards then */
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uint32_t result = uprv_uca_processContraction(contractions, element, CE, TRUE, status);
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if(CE == UCOL_NOT_FOUND || !isContraction(CE)) {
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ucmp32_set(mapping, element->cPoints[0], result);
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}
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/* add the reverse order */
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uprv_uca_reverseElement(expansions, element);
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CE = ucmp32_get(mapping, element->cPoints[0]);
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result = uprv_uca_processContraction(contractions, element, CE, FALSE, status);
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if(CE == UCOL_NOT_FOUND || !isContraction(CE)) {
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ucmp32_set(mapping, element->cPoints[0], result);
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}
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} else { /* easy case, */
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if( CE != UCOL_NOT_FOUND) {
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if(isContraction(CE)) { /* adding a non contraction element (thai, expansion, single) to already existing contraction */
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uprv_cnttab_setContraction(contractions, CE, 0, 0, element->mapCE, TRUE, status);
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/* This loop has to change the CE at the end of contraction REDO!*/
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uprv_cnttab_changeLastCE(contractions, CE, element->mapCE, TRUE, status);
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} else {
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fprintf(stderr, "Warning - trying to overwrite already existing data for codepoint %04X\n", element->cPoints[0]);
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//*status = U_ILLEGAL_ARGUMENT_ERROR;
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}
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} else {
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ucmp32_set(mapping, element->cPoints[0], element->mapCE);
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}
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}
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return CE;
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}
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uint32_t uprv_uca_processContraction(CntTable *contractions, UCAElements *element, uint32_t existingCE, UBool forward, UErrorCode *status) {
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int32_t firstContractionOffset = 0;
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int32_t contractionOffset = 0;
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uint32_t contractionElement = UCOL_NOT_FOUND;
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if(U_FAILURE(*status)) {
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return UCOL_NOT_FOUND;
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}
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/* end of recursion */
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if(element->cSize == 1) {
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return element->mapCE;
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}
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/* this recursion currently feeds on the only element we have... We will have to copy it in order to accomodate */
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/* for both backward and forward cycles */
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/* we encountered either an empty space or a non-contraction element */
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/* this means we are constructing a new contraction sequence */
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if(existingCE == UCOL_NOT_FOUND || !isContraction(existingCE)) {
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/* if it wasn't contraction, we wouldn't end up here*/
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firstContractionOffset = uprv_cnttab_addContraction(contractions, UPRV_CNTTAB_NEWELEMENT, 0, existingCE, forward, status);
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if(forward == FALSE) {
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uprv_cnttab_addContraction(contractions, firstContractionOffset, 0, existingCE, TRUE, status);
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uprv_cnttab_addContraction(contractions, firstContractionOffset, 0xFFFF, existingCE, TRUE, status);
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}
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UChar toAdd = element->cPoints[1];
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element->cPoints++;
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element->cSize--;
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uint32_t newCE = uprv_uca_processContraction(contractions, element, UCOL_NOT_FOUND, forward, status);
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element->cPoints--;
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element->cSize++;
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contractionOffset = uprv_cnttab_addContraction(contractions, firstContractionOffset, toAdd, newCE, forward, status);
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contractionOffset = uprv_cnttab_addContraction(contractions, firstContractionOffset, 0xFFFF, existingCE, forward, status);
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contractionElement = constructContractCE(firstContractionOffset);
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return contractionElement;
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} else { /* we are adding to existing contraction */
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/* there were already some elements in the table, so we need to add a new contraction */
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/* Two things can happen here: either the codepoint is already in the table, or it is not */
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uint32_t position = uprv_cnttab_findCP(contractions, existingCE, *(element->cPoints+1), forward, status);
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element->cPoints++;
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element->cSize--;
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if(position != 0) { /* if it is we just continue down the chain */
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uint32_t eCE = uprv_cnttab_getCE(contractions, existingCE, position, forward, status);
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uint32_t newCE = uprv_uca_processContraction(contractions, element, eCE, forward, status);
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uprv_cnttab_setContraction(contractions, existingCE, position, *(element->cPoints), newCE, forward, status);
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} else { /* if it isn't, we will have to create a new sequence */
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uint32_t newCE = uprv_uca_processContraction(contractions, element, UCOL_NOT_FOUND, forward, status);
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uprv_cnttab_insertContraction(contractions, existingCE, *(element->cPoints), newCE, forward, status);
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}
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element->cPoints--;
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element->cSize++;
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return existingCE;
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}
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}
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void uprv_uca_getMaxExpansionHangul(CompactIntArray *mapping,
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MaxExpansionTable *maxexpansion,
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UErrorCode *status)
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{
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const uint32_t VBASE = 0x1161;
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const uint32_t TBASE = 0x11A7;
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const uint32_t VCOUNT = 21;
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const uint32_t TCOUNT = 28;
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uint32_t v = VBASE + VCOUNT - 1;
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uint32_t t = TBASE + TCOUNT - 1;
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uint32_t ce;
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while (v >= VBASE)
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{
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ce = ucmp32_get(mapping, v);
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uprv_uca_setMaxExpansion(ce, 2, maxexpansion, status);
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v --;
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}
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while (t >= TBASE)
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{
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ce = ucmp32_get(mapping, t);
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uprv_uca_setMaxExpansion(ce, 3, maxexpansion, status);
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t --;
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}
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}
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UCATableHeader *uprv_uca_reassembleTable(tempUCATable *t, UCATableHeader *mD, UErrorCode *status) {
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CompactIntArray *mapping = t->mapping;
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ExpansionTable *expansions = t->expansions;
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CntTable *contractions = t->contractions;
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MaxExpansionTable *maxexpansion = t->maxExpansions;
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if(U_FAILURE(*status)) {
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return NULL;
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}
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uint32_t beforeContractions = (paddedsize(sizeof(UCATableHeader))+paddedsize(expansions->position*sizeof(uint32_t)))/sizeof(UChar);
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int32_t contractionsSize = 0;
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if(mD == NULL) {
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contractionsSize = uprv_cnttab_constructTable(contractions, beforeContractions, status);
|
|
} else {
|
|
contractionsSize = mD->contractionSize;
|
|
uprv_cnttab_moveTable(contractions, mD->contractionIndex/sizeof(UChar), beforeContractions, status);
|
|
}
|
|
|
|
ucmp32_compact(mapping, 1);
|
|
UMemoryStream *ms = uprv_mstrm_openNew(8192);
|
|
int32_t mappingSize = ucmp32_flattenMem(mapping, ms);
|
|
const uint8_t *flattened = uprv_mstrm_getBuffer(ms, &mappingSize);
|
|
|
|
/* sets hangul expansions */
|
|
uprv_uca_getMaxExpansionHangul(mapping, maxexpansion, status);
|
|
|
|
uint32_t tableOffset = 0;
|
|
uint8_t *dataStart;
|
|
|
|
uint32_t toAllocate = paddedsize(sizeof(UCATableHeader))+
|
|
paddedsize(expansions->position*sizeof(uint32_t))+
|
|
paddedsize(mappingSize)+
|
|
paddedsize(contractionsSize*(sizeof(UChar)+sizeof(uint32_t)))+
|
|
paddedsize(0x100*sizeof(uint32_t))
|
|
/* maxexpansion array */
|
|
+ paddedsize(maxexpansion->position * sizeof(uint32_t)) +
|
|
/* maxexpansion size array */
|
|
paddedsize(maxexpansion->position * sizeof(uint8_t)) +
|
|
paddedsize(UCOL_UNSAFECP_TABLE_SIZE);
|
|
|
|
if(mD == NULL) {
|
|
dataStart = (uint8_t *)malloc(toAllocate);
|
|
} else {
|
|
dataStart = (uint8_t *)realloc(mD, toAllocate);
|
|
}
|
|
|
|
UCATableHeader *myData = (UCATableHeader *)dataStart;
|
|
myData->contractionSize = contractionsSize;
|
|
myData->version[0] = t->image->version[0];
|
|
myData->version[1] = t->image->version[1];
|
|
|
|
tableOffset += paddedsize(sizeof(UCATableHeader));
|
|
|
|
/* copy expansions */
|
|
/*myData->expansion = (uint32_t *)dataStart+tableOffset;*/
|
|
myData->expansion = tableOffset;
|
|
memcpy(dataStart+tableOffset, expansions->CEs, expansions->position*sizeof(uint32_t));
|
|
tableOffset += paddedsize(expansions->position*sizeof(uint32_t));
|
|
|
|
/* contractions block */
|
|
/* copy contraction index */
|
|
/*myData->contractionIndex = (UChar *)(dataStart+tableOffset);*/
|
|
myData->contractionIndex = tableOffset;
|
|
memcpy(dataStart+tableOffset, contractions->codePoints, contractionsSize*sizeof(UChar));
|
|
tableOffset += paddedsize(contractionsSize*sizeof(UChar));
|
|
|
|
/* copy contraction collation elements */
|
|
/*myData->contractionCEs = (uint32_t *)(dataStart+tableOffset);*/
|
|
myData->contractionCEs = tableOffset;
|
|
memcpy(dataStart+tableOffset, contractions->CEs, contractionsSize*sizeof(uint32_t));
|
|
tableOffset += paddedsize(contractionsSize*sizeof(uint32_t));
|
|
|
|
/* copy mapping table */
|
|
/*myData->mappingPosition = dataStart+tableOffset;*/
|
|
myData->mappingPosition = tableOffset;
|
|
memcpy(dataStart+tableOffset, flattened, mappingSize);
|
|
tableOffset += paddedsize(mappingSize);
|
|
|
|
/* construct the fast tracker for latin one*/
|
|
myData->latinOneMapping = tableOffset;
|
|
uint32_t *store = (uint32_t*)(dataStart+tableOffset);
|
|
int32_t i = 0;
|
|
for(i = 0; i<=0xFF; i++) {
|
|
*(store++) = ucmp32_get(mapping,i);
|
|
tableOffset+=sizeof(uint32_t);
|
|
}
|
|
|
|
/* copy max expansion table */
|
|
myData->endExpansionCE = tableOffset;
|
|
myData->endExpansionCECount = maxexpansion->position;
|
|
/* not copying the first element which is a dummy */
|
|
uprv_memcpy(dataStart + tableOffset, maxexpansion->endExpansionCE + 1,
|
|
maxexpansion->position * sizeof(uint32_t));
|
|
tableOffset += paddedsize(maxexpansion->position * sizeof(uint32_t));
|
|
myData->expansionCESize = tableOffset;
|
|
uprv_memcpy(dataStart + tableOffset, maxexpansion->expansionCESize + 1,
|
|
maxexpansion->position * sizeof(uint8_t));
|
|
tableOffset += paddedsize(maxexpansion->position * sizeof(uint8_t));
|
|
|
|
/* Unsafe chars table. Finish it off, then copy it. */
|
|
uprv_uca_unsafeCPAddCCNZ(t);
|
|
myData->unsafeCP = tableOffset;
|
|
uprv_memcpy(dataStart + tableOffset, t->unsafeCP, UCOL_UNSAFECP_TABLE_SIZE);
|
|
tableOffset += paddedsize(UCOL_UNSAFECP_TABLE_SIZE);
|
|
|
|
|
|
if(tableOffset != toAllocate) {
|
|
fprintf(stderr, "calculation screwup!!! Expected to write %i but wrote %i instead!!!\n", toAllocate, tableOffset);
|
|
*status = U_INTERNAL_PROGRAM_ERROR;
|
|
free(dataStart);
|
|
return 0;
|
|
}
|
|
|
|
myData->size = tableOffset;
|
|
|
|
myData->variableTopValue = t->image->variableTopValue;
|
|
myData->strength = t->image->strength;
|
|
myData->frenchCollation = t->image->frenchCollation;
|
|
myData->alternateHandling = t->image->alternateHandling; /* attribute for handling variable elements*/
|
|
myData->caseFirst = t->image->caseFirst; /* who goes first, lower case or uppercase */
|
|
myData->caseLevel = t->image->caseLevel; /* do we have an extra case level */
|
|
myData->normalizationMode = t->image->normalizationMode; /* attribute for normalization */
|
|
|
|
|
|
/* This should happen upon ressurection */
|
|
/*const uint8_t *mapPosition = (uint8_t*)myData+myData->mappingPosition;*/
|
|
uprv_mstrm_close(ms);
|
|
return myData;
|
|
}
|
|
|
|
UCATableHeader *uprv_uca_assembleTable(tempUCATable *t, UErrorCode *status) {
|
|
return uprv_uca_reassembleTable(t, 0, status);
|
|
}
|
|
|
|
|