460 lines
13 KiB
C++
460 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: ucol_tok.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 module maintains a contraction table structure in expanded form
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* and provides means to flatten this structure
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*
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*/
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#include "ucol_cnt.h"
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#include "cmemory.h"
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#include "unicode/uchar.h"
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void uprv_growTable(ContractionTable *tbl, UErrorCode *status) {
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if(tbl->position == tbl->size) {
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uint32_t *newData = (uint32_t *)realloc(tbl->CEs, 2*tbl->size*sizeof(uint32_t));
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UChar *newCPs = (UChar *)realloc(tbl->codePoints, 2*tbl->size*sizeof(UChar));
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if(newData == NULL || newCPs == NULL) {
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#ifdef UCOL_DEBUG
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fprintf(stderr, "out of memory for contractions\n");
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#endif
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*status = U_MEMORY_ALLOCATION_ERROR;
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return;
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}
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tbl->CEs = newData;
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tbl->codePoints = newCPs;
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tbl->size *= 2;
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}
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}
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CntTable *uprv_cnttab_open(CompactEIntArray *mapping, UErrorCode *status) {
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if(U_FAILURE(*status)) {
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return 0;
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}
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CntTable *tbl = (CntTable *)uprv_malloc(sizeof(CntTable));
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tbl->mapping = mapping;
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tbl->elements = (ContractionTable **)uprv_malloc(INIT_EXP_TABLE_SIZE*sizeof(ContractionTable *));
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tbl->capacity = INIT_EXP_TABLE_SIZE;
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uprv_memset(tbl->elements, 0, INIT_EXP_TABLE_SIZE*sizeof(ContractionTable *));
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tbl->size = 0;
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tbl->position = 0;
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tbl->CEs = NULL;
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tbl->codePoints = NULL;
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tbl->offsets = NULL;
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return tbl;
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}
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ContractionTable *addATableElement(CntTable *table, uint32_t *key, UErrorCode *status) {
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ContractionTable *el = (ContractionTable *)uprv_malloc(sizeof(ContractionTable));
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el->CEs = (uint32_t *)uprv_malloc(INIT_EXP_TABLE_SIZE*sizeof(uint32_t));
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el->codePoints = (UChar *)uprv_malloc(INIT_EXP_TABLE_SIZE*sizeof(UChar));
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el->position = 0;
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el->size = INIT_EXP_TABLE_SIZE;
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uprv_memset(el->CEs, 'F', INIT_EXP_TABLE_SIZE*sizeof(uint32_t));
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uprv_memset(el->codePoints, 'F', INIT_EXP_TABLE_SIZE*sizeof(UChar));
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table->elements[table->size] = el;
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//uhash_put(table->elements, (void *)table->size, el, status);
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*key = table->size++;
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if(table->size == table->capacity) {
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// do realloc
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table->elements = (ContractionTable **)realloc(table->elements, table->capacity*2*sizeof(ContractionTable *));
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uprv_memset(table->elements+table->capacity, 0, table->capacity*sizeof(ContractionTable *));
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if(table->elements == NULL) {
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#ifdef UCOL_DEBUG
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fprintf(stderr, "out of memory for contraction parts\n");
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#endif
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*status = U_MEMORY_ALLOCATION_ERROR;
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} else {
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table->capacity *= 2;
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}
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}
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return el;
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}
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int32_t uprv_cnttab_constructTable(CntTable *table, uint32_t mainOffset, UErrorCode *status) {
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int32_t i = 0, j = 0;
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if(U_FAILURE(*status) || table->size == 0) {
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return 0;
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}
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table->position = 0;
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if(table->offsets != NULL) {
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free(table->offsets);
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}
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table->offsets = (int32_t *)uprv_malloc(table->size*sizeof(int32_t));
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/* See how much memory we need */
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for(i = 0; i<table->size; i++) {
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table->offsets[i] = table->position+mainOffset;
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table->position += table->elements[i]->position;
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}
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/* Allocate it */
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if(table->CEs != NULL) {
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free(table->CEs);
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}
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table->CEs = (uint32_t *)uprv_malloc(table->position*sizeof(uint32_t));
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uprv_memset(table->CEs, '?', table->position*sizeof(uint32_t));
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if(table->codePoints != NULL) {
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free(table->codePoints);
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}
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table->codePoints = (UChar *)uprv_malloc(table->position*sizeof(UChar));
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uprv_memset(table->codePoints, '?', table->position*sizeof(UChar));
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/* Now stuff the things in*/
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UChar *cpPointer = table->codePoints;
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uint32_t *CEPointer = table->CEs;
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for(i = 0; i<table->size; i++) {
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int32_t size = table->elements[i]->position;
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uint8_t ccMax = 0, ccMin = 255, cc = 0;
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for(j = 1; j<size; j++) {
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cc = u_getCombiningClass(table->elements[i]->codePoints[j]);
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if(cc>ccMax) {
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ccMax = cc;
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}
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if(cc<ccMin) {
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ccMin = cc;
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}
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*(cpPointer+j) = table->elements[i]->codePoints[j];
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}
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*cpPointer = ((ccMin==ccMax)?1:0 << 8) | ccMax;
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uprv_memcpy(CEPointer, table->elements[i]->CEs, size*sizeof(uint32_t));
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for(j = 0; j<size; j++) {
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if(isContraction(*(CEPointer+j))) {
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*(CEPointer+j) = constructContractCE(table->offsets[getContractOffset(*(CEPointer+j))]);
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}
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}
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cpPointer += size;
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CEPointer += size;
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}
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uint32_t CE;
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for(i = 0; i<=0x10FFFF; i++) {
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CE = ucmpe32_get(table->mapping, i);
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if(isContraction(CE)) {
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CE = constructContractCE(table->offsets[getContractOffset(CE)]);
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ucmpe32_set(table->mapping, i, CE);
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}
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}
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return table->position;
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}
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ContractionTable *uprv_cnttab_cloneContraction(ContractionTable *t) {
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ContractionTable *r = (ContractionTable *)uprv_malloc(sizeof(ContractionTable));
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r->position = t->position;
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r->size = t->size;
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r->codePoints = (UChar *)uprv_malloc(sizeof(UChar)*t->size);
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r->CEs = (uint32_t *)uprv_malloc(sizeof(uint32_t)*t->size);
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uprv_memcpy(r->codePoints, t->codePoints, sizeof(UChar)*t->size);
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uprv_memcpy(r->CEs, t->CEs, sizeof(uint32_t)*t->size);
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return r;
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}
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CntTable *uprv_cnttab_clone(CntTable *t) {
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int32_t i = 0;
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CntTable *r = (CntTable *)uprv_malloc(sizeof(CntTable));
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r->position = t->position;
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r->size = t->size;
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r->capacity = t->capacity;
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r->mapping = t->mapping;
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r->elements = (ContractionTable **)uprv_malloc(t->capacity*sizeof(ContractionTable *));
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//uprv_memcpy(r->elements, t->elements, t->capacity*sizeof(ContractionTable *));
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for(i = 0; i<t->size; i++) {
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r->elements[i] = uprv_cnttab_cloneContraction(t->elements[i]);
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}
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if(t->CEs != NULL) {
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r->CEs = (uint32_t *)uprv_malloc(t->position*sizeof(uint32_t));
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uprv_memcpy(r->CEs, t->CEs, t->position*sizeof(uint32_t));
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} else {
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r->CEs = NULL;
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}
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if(t->codePoints != NULL) {
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r->codePoints = (UChar *)uprv_malloc(t->position*sizeof(UChar));
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uprv_memcpy(r->codePoints, t->codePoints, t->position*sizeof(UChar));
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} else {
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r->codePoints = NULL;
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}
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if(t->offsets != NULL) {
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r->offsets = (int32_t *)uprv_malloc(t->size*sizeof(int32_t));
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uprv_memcpy(r->offsets, t->offsets, t->size*sizeof(int32_t));
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} else {
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r->offsets = NULL;
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}
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return r;
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}
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void uprv_cnttab_close(CntTable *table) {
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int32_t i = 0;
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for(i = 0; i<table->size; i++) {
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free(table->elements[i]->CEs);
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free(table->elements[i]->codePoints);
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free(table->elements[i]);
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}
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free(table->elements);
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free(table->CEs);
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free(table->offsets);
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free(table->codePoints);
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free(table);
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}
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/* this is for adding non contractions */
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uint32_t uprv_cnttab_changeLastCE(CntTable *table, uint32_t element, uint32_t value, UErrorCode *status) {
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element &= 0xFFFFFF;
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ContractionTable *tbl = NULL;
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if(U_FAILURE(*status)) {
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return 0;
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}
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if((element == 0xFFFFFF) || (tbl = table->elements[element]) == NULL) {
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tbl = addATableElement(table, &element, status);
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}
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tbl->CEs[tbl->position-1] = value;
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return(constructContractCE(element));
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}
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/* inserts a part of contraction sequence in table. Sequences behind the offset are moved back. If element is non existent, it creates on. Returns element handle */
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uint32_t uprv_cnttab_insertContraction(CntTable *table, uint32_t element, UChar codePoint, uint32_t value, UErrorCode *status) {
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element &= 0xFFFFFF;
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ContractionTable *tbl = NULL;
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if(U_FAILURE(*status)) {
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return 0;
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}
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if((element == 0xFFFFFF) || (tbl = table->elements[element]) == NULL) {
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tbl = addATableElement(table, &element, status);
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}
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uprv_growTable(tbl, status);
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uint32_t offset = 0;
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while(tbl->codePoints[offset] < codePoint && offset<tbl->position) {
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offset++;
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}
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uint32_t i = tbl->position;
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for(i = tbl->position; i > offset; i--) {
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tbl->CEs[i] = tbl->CEs[i-1];
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tbl->codePoints[i] = tbl->codePoints[i-1];
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}
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tbl->CEs[offset] = value;
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tbl->codePoints[offset] = codePoint;
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tbl->position++;
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return(constructContractCE(element));
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}
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/* adds more contractions in table. If element is non existant, it creates on. Returns element handle */
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uint32_t uprv_cnttab_addContraction(CntTable *table, uint32_t element, UChar codePoint, uint32_t value, UErrorCode *status) {
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element &= 0xFFFFFF;
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ContractionTable *tbl = NULL;
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if(U_FAILURE(*status)) {
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return 0;
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}
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if((element == 0xFFFFFF) || (tbl = table->elements[element]) == NULL) {
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tbl = addATableElement(table, &element, status);
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}
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uprv_growTable(tbl, status);
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tbl->CEs[tbl->position] = value;
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tbl->codePoints[tbl->position] = codePoint;
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tbl->position++;
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return(constructContractCE(element));
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}
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/* sets a part of contraction sequence in table. If element is non existant, it creates on. Returns element handle */
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uint32_t uprv_cnttab_setContraction(CntTable *table, uint32_t element, uint32_t offset, UChar codePoint, uint32_t value, UErrorCode *status) {
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element &= 0xFFFFFF;
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ContractionTable *tbl = NULL;
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if(U_FAILURE(*status)) {
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return 0;
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}
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if((element == 0xFFFFFF) || (tbl = table->elements[element]) == NULL) {
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tbl = addATableElement(table, &element, status);
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}
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if(offset >= tbl->size) {
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*status = U_INDEX_OUTOFBOUNDS_ERROR;
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return 0;
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}
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tbl->CEs[offset] = value;
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tbl->codePoints[offset] = codePoint;
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//return(offset);
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return(constructContractCE(element));
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}
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ContractionTable *_cnttab_getContractionTable(CntTable *table, uint32_t element) {
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element &= 0xFFFFFF;
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ContractionTable *tbl = NULL;
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if((element == 0xFFFFFF) || (tbl = table->elements[element]) == NULL) {
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return NULL;
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} else {
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return tbl;
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}
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}
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int32_t _cnttab_findCP(ContractionTable *tbl, UChar codePoint) {
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uint32_t position = 0;
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if(tbl == NULL) {
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return -1;
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}
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while(codePoint > tbl->codePoints[position]) {
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position++;
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if(position > tbl->position) {
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return -1;
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}
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}
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if (codePoint == tbl->codePoints[position]) {
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return position;
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} else {
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return -1;
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}
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}
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uint32_t _cnttab_getCE(ContractionTable *tbl, int32_t position) {
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if(tbl == NULL) {
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return UCOL_NOT_FOUND;
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}
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if((uint32_t)position > tbl->position || position == -1) {
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return UCOL_NOT_FOUND;
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} else {
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return tbl->CEs[position];
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}
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}
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int32_t uprv_cnttab_findCP(CntTable *table, uint32_t element, UChar codePoint, UErrorCode *status) {
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if(U_FAILURE(*status)) {
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return 0;
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}
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return _cnttab_findCP(_cnttab_getContractionTable(table, element), codePoint);
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}
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uint32_t uprv_cnttab_getCE(CntTable *table, uint32_t element, uint32_t position, UErrorCode *status) {
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if(U_FAILURE(*status)) {
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return UCOL_NOT_FOUND;
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}
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return(_cnttab_getCE(_cnttab_getContractionTable(table, element), position));
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}
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uint32_t uprv_cnttab_findCE(CntTable *table, uint32_t element, UChar codePoint, UErrorCode *status) {
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if(U_FAILURE(*status)) {
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return UCOL_NOT_FOUND;
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}
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ContractionTable *tbl = _cnttab_getContractionTable(table, element);
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return _cnttab_getCE(tbl, _cnttab_findCP(tbl, codePoint));
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}
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UBool uprv_cnttab_isTailored(CntTable *table, uint32_t element, UChar *ztString, UErrorCode *status) {
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if(U_FAILURE(*status)) {
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return FALSE;
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}
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while(*(ztString)!=0) {
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element = uprv_cnttab_findCE(table, element, *(ztString), status);
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if(element == UCOL_NOT_FOUND) {
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return FALSE;
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}
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if(!isContraction(element)) {
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return TRUE;
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}
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ztString++;
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}
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if(uprv_cnttab_getCE(table, element, 0, status) != UCOL_NOT_FOUND) {
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return TRUE;
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} else {
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return FALSE;
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}
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}
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uint32_t uprv_cnttab_changeContraction(CntTable *table, uint32_t element, UChar codePoint, uint32_t newCE, UErrorCode *status) {
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element &= 0xFFFFFF;
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ContractionTable *tbl = NULL;
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if(U_FAILURE(*status)) {
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return 0;
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}
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if((element == 0xFFFFFF) || (tbl = table->elements[element]) == NULL) {
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return 0;
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}
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uint32_t position = 0;
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while(codePoint > tbl->codePoints[position]) {
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position++;
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if(position > tbl->position) {
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return UCOL_NOT_FOUND;
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}
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}
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if (codePoint == tbl->codePoints[position]) {
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tbl->CEs[position] = newCE;
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return element;
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} else {
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return UCOL_NOT_FOUND;
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}
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}
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