337 lines
13 KiB
C++
337 lines
13 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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#include "ucaelems.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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el->codepoint = el->cPoints[0];
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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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return t;
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}
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void uprv_uca_closeTempTable(tempUCATable *t) {
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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);
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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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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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}
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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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/* and 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 i = 0;
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UBool gotContractionOffset = FALSE;
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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, -1, 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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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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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);
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} else {
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contractionsSize = mD->contractionSize;
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}
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ucmp32_compact(mapping, 1);
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UMemoryStream *ms = uprv_mstrm_openNew(8192);
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int32_t mappingSize = ucmp32_flattenMem(mapping, ms);
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const uint8_t *flattened = uprv_mstrm_getBuffer(ms, &mappingSize);
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uint32_t tableOffset = 0;
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uint8_t *dataStart;
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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)));
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if(mD == NULL) {
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dataStart = (uint8_t *)malloc(toAllocate);
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} else {
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dataStart = (uint8_t *)realloc(mD, toAllocate);
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}
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UCATableHeader *myData = (UCATableHeader *)dataStart;
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myData->contractionSize = contractionsSize;
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tableOffset += paddedsize(sizeof(UCATableHeader));
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/* copy expansions */
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/*myData->expansion = (uint32_t *)dataStart+tableOffset;*/
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myData->expansion = tableOffset;
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memcpy(dataStart+tableOffset, expansions->CEs, expansions->position*sizeof(uint32_t));
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tableOffset += paddedsize(expansions->position*sizeof(uint32_t));
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/* contractions block */
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/* copy contraction index */
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/*myData->contractionIndex = (UChar *)(dataStart+tableOffset);*/
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myData->contractionIndex = tableOffset;
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memcpy(dataStart+tableOffset, contractions->codePoints, contractionsSize*sizeof(UChar));
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tableOffset += paddedsize(contractionsSize*sizeof(UChar));
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/* copy contraction collation elements */
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/*myData->contractionCEs = (uint32_t *)(dataStart+tableOffset);*/
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myData->contractionCEs = tableOffset;
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memcpy(dataStart+tableOffset, contractions->CEs, contractionsSize*sizeof(uint32_t));
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tableOffset += paddedsize(contractionsSize*sizeof(uint32_t));
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/* copy mapping table */
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/*myData->mappingPosition = dataStart+tableOffset;*/
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myData->mappingPosition = tableOffset;
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memcpy(dataStart+tableOffset, flattened, mappingSize);
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tableOffset += paddedsize(mappingSize);
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/* construct the fast tracker for latin one*/
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myData->latinOneMapping = tableOffset;
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uint32_t *store = (uint32_t*)(dataStart+tableOffset);
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int32_t i = 0;
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for(i = 0; i<=0xFF; i++) {
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*(store++) = ucmp32_get(mapping,i);
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tableOffset+=sizeof(uint32_t);
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}
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if(tableOffset != toAllocate) {
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fprintf(stderr, "calculation screwup!!! Expected to write %i but wrote %i instead!!!\n", toAllocate, tableOffset);
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*status = U_INTERNAL_PROGRAM_ERROR;
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free(dataStart);
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return 0;
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}
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myData->size = tableOffset;
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myData->variableTopValue = t->image->variableTopValue;
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myData->strength = t->image->strength;
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myData->frenchCollation = t->image->frenchCollation;
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myData->alternateHandling = t->image->alternateHandling; /* attribute for handling variable elements*/
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myData->caseFirst = t->image->caseFirst; /* who goes first, lower case or uppercase */
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myData->caseLevel = t->image->caseLevel; /* do we have an extra case level */
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myData->normalizationMode = t->image->normalizationMode; /* attribute for normalization */
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/* This should happen upon ressurection */
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const uint8_t *mapPosition = (uint8_t*)myData+myData->mappingPosition;
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myData->mapping = ucmp32_openFromData(&mapPosition, status);
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return myData;
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}
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UCATableHeader *uprv_uca_assembleTable(tempUCATable *t, UErrorCode *status) {
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return uprv_uca_reassembleTable(t, 0, status);
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}
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