/*
*******************************************************************************
*
* Copyright (C) 2001-2008, International Business Machines
* Corporation and others. All Rights Reserved.
*
*******************************************************************************
* file name: ucol_cnt.cpp
* encoding: US-ASCII
* tab size: 8 (not used)
* indentation:4
*
* created 02/22/2001
* created by: Vladimir Weinstein
*
* This module maintains a contraction table structure in expanded form
* and provides means to flatten this structure
*
*/
#include "unicode/utypes.h"
#if !UCONFIG_NO_COLLATION
#include "unicode/uchar.h"
#include "ucol_cnt.h"
#include "cmemory.h"
static void uprv_growTable(ContractionTable *tbl, UErrorCode *status) {
if(tbl->position == tbl->size) {
uint32_t *newData = (uint32_t *)uprv_realloc(tbl->CEs, 2*tbl->size*sizeof(uint32_t));
if(newData == NULL) {
*status = U_MEMORY_ALLOCATION_ERROR;
return;
}
UChar *newCPs = (UChar *)uprv_realloc(tbl->codePoints, 2*tbl->size*sizeof(UChar));
if(newCPs == NULL) {
uprv_free(newData);
*status = U_MEMORY_ALLOCATION_ERROR;
return;
}
tbl->CEs = newData;
tbl->codePoints = newCPs;
tbl->size *= 2;
}
}
U_CAPI CntTable* U_EXPORT2
/*uprv_cnttab_open(CompactEIntArray *mapping, UErrorCode *status) {*/
uprv_cnttab_open(UNewTrie *mapping, UErrorCode *status) {
if(U_FAILURE(*status)) {
return 0;
}
CntTable *tbl = (CntTable *)uprv_malloc(sizeof(CntTable));
if(tbl == NULL) {
*status = U_MEMORY_ALLOCATION_ERROR;
return NULL;
}
tbl->mapping = mapping;
tbl->elements = (ContractionTable **)uprv_malloc(INIT_EXP_TABLE_SIZE*sizeof(ContractionTable *));
if(tbl->elements == NULL) {
*status = U_MEMORY_ALLOCATION_ERROR;
uprv_free(tbl);
return NULL;
}
tbl->capacity = INIT_EXP_TABLE_SIZE;
uprv_memset(tbl->elements, 0, INIT_EXP_TABLE_SIZE*sizeof(ContractionTable *));
tbl->size = 0;
tbl->position = 0;
tbl->CEs = NULL;
tbl->codePoints = NULL;
tbl->offsets = NULL;
tbl->currentTag = NOT_FOUND_TAG;
return tbl;
}
static ContractionTable *addATableElement(CntTable *table, uint32_t *key, UErrorCode *status) {
ContractionTable *el = (ContractionTable *)uprv_malloc(sizeof(ContractionTable));
if(el == NULL) {
goto outOfMemory;
}
el->CEs = (uint32_t *)uprv_malloc(INIT_EXP_TABLE_SIZE*sizeof(uint32_t));
if(el->CEs == NULL) {
goto outOfMemory;
}
el->codePoints = (UChar *)uprv_malloc(INIT_EXP_TABLE_SIZE*sizeof(UChar));
if(el->codePoints == NULL) {
uprv_free(el->CEs);
goto outOfMemory;
}
el->position = 0;
el->size = INIT_EXP_TABLE_SIZE;
uprv_memset(el->CEs, 0, INIT_EXP_TABLE_SIZE*sizeof(uint32_t));
uprv_memset(el->codePoints, 0, INIT_EXP_TABLE_SIZE*sizeof(UChar));
table->elements[table->size] = el;
//uhash_put(table->elements, (void *)table->size, el, status);
*key = table->size++;
if(table->size == table->capacity) {
ContractionTable **newElements = (ContractionTable **)uprv_malloc(table->capacity*2*sizeof(ContractionTable *));
// do realloc
/* table->elements = (ContractionTable **)realloc(table->elements, table->capacity*2*sizeof(ContractionTable *));*/
if(newElements == NULL) {
uprv_free(el->codePoints);
uprv_free(el->CEs);
goto outOfMemory;
}
ContractionTable **oldElements = table->elements;
uprv_memcpy(newElements, oldElements, table->capacity*sizeof(ContractionTable *));
uprv_memset(newElements+table->capacity, 0, table->capacity*sizeof(ContractionTable *));
table->capacity *= 2;
table->elements = newElements;
uprv_free(oldElements);
}
return el;
outOfMemory:
*status = U_MEMORY_ALLOCATION_ERROR;
if (el) uprv_free(el);
return NULL;
}
U_CAPI int32_t U_EXPORT2
uprv_cnttab_constructTable(CntTable *table, uint32_t mainOffset, UErrorCode *status) {
int32_t i = 0, j = 0;
if(U_FAILURE(*status) || table->size == 0) {
return 0;
}
table->position = 0;
if(table->offsets != NULL) {
uprv_free(table->offsets);
}
table->offsets = (int32_t *)uprv_malloc(table->size*sizeof(int32_t));
if(table->offsets == NULL) {
*status = U_MEMORY_ALLOCATION_ERROR;
return 0;
}
/* See how much memory we need */
for(i = 0; i<table->size; i++) {
table->offsets[i] = table->position+mainOffset;
table->position += table->elements[i]->position;
}
/* Allocate it */
if(table->CEs != NULL) {
uprv_free(table->CEs);
}
table->CEs = (uint32_t *)uprv_malloc(table->position*sizeof(uint32_t));
if(table->CEs == NULL) {
*status = U_MEMORY_ALLOCATION_ERROR;
uprv_free(table->offsets);
table->offsets = NULL;
return 0;
}
uprv_memset(table->CEs, '?', table->position*sizeof(uint32_t));
if(table->codePoints != NULL) {
uprv_free(table->codePoints);
}
table->codePoints = (UChar *)uprv_malloc(table->position*sizeof(UChar));
if(table->codePoints == NULL) {
*status = U_MEMORY_ALLOCATION_ERROR;
uprv_free(table->offsets);
table->offsets = NULL;
uprv_free(table->CEs);
table->CEs = NULL;
return 0;
}
uprv_memset(table->codePoints, '?', table->position*sizeof(UChar));
/* Now stuff the things in*/
UChar *cpPointer = table->codePoints;
uint32_t *CEPointer = table->CEs;
for(i = 0; i<table->size; i++) {
int32_t size = table->elements[i]->position;
uint8_t ccMax = 0, ccMin = 255, cc = 0;
for(j = 1; j<size; j++) {
cc = u_getCombiningClass(table->elements[i]->codePoints[j]);
if(cc>ccMax) {
ccMax = cc;
}
if(cc<ccMin) {
ccMin = cc;
}
*(cpPointer+j) = table->elements[i]->codePoints[j];
}
*cpPointer = ((ccMin==ccMax)?1:0 << 8) | ccMax;
uprv_memcpy(CEPointer, table->elements[i]->CEs, size*sizeof(uint32_t));
for(j = 0; j<size; j++) {
if(isCntTableElement(*(CEPointer+j))) {
*(CEPointer+j) = constructContractCE(getCETag(*(CEPointer+j)), table->offsets[getContractOffset(*(CEPointer+j))]);
}
}
cpPointer += size;
CEPointer += size;
}
// TODO: this one apparently updates the contraction CEs to point to a real address (relative to the
// start of the flat file). However, what is done below is just wrong and it affects building of
// tailorings that have constructions in a bad way. At least, one should enumerate the trie. Also,
// keeping a list of code points that are contractions might be smart, although I'm not sure if it's
// feasible.
uint32_t CE;
for(i = 0; i<=0x10FFFF; i++) {
/*CE = ucmpe32_get(table->mapping, i);*/
CE = utrie_get32(table->mapping, i, NULL);
if(isCntTableElement(CE)) {
CE = constructContractCE(getCETag(CE), table->offsets[getContractOffset(CE)]);
/*ucmpe32_set(table->mapping, i, CE);*/
utrie_set32(table->mapping, i, CE);
}
}
return table->position;
}
static ContractionTable *uprv_cnttab_cloneContraction(ContractionTable *t, UErrorCode *status) {
ContractionTable *r = (ContractionTable *)uprv_malloc(sizeof(ContractionTable));
if(r == NULL) {
goto outOfMemory;
}
r->position = t->position;
r->size = t->size;
r->codePoints = (UChar *)uprv_malloc(sizeof(UChar)*t->size);
if(r->codePoints == NULL) {
goto outOfMemory;
}
r->CEs = (uint32_t *)uprv_malloc(sizeof(uint32_t)*t->size);
if(r->CEs == NULL) {
uprv_free(r->codePoints);
goto outOfMemory;
}
uprv_memcpy(r->codePoints, t->codePoints, sizeof(UChar)*t->size);
uprv_memcpy(r->CEs, t->CEs, sizeof(uint32_t)*t->size);
return r;
outOfMemory:
*status = U_MEMORY_ALLOCATION_ERROR;
if (r) uprv_free(r);
return NULL;
}
U_CAPI CntTable* U_EXPORT2
uprv_cnttab_clone(CntTable *t, UErrorCode *status) {
if(U_FAILURE(*status)) {
return NULL;
}
int32_t i = 0;
CntTable *r = (CntTable *)uprv_malloc(sizeof(CntTable));
/* test for NULL */
if (r == NULL) {
goto outOfMemory;
}
r->position = t->position;
r->size = t->size;
r->capacity = t->capacity;
r->mapping = t->mapping;
r->elements = (ContractionTable **)uprv_malloc(t->capacity*sizeof(ContractionTable *));
/* test for NULL */
if (r->elements == NULL) {
goto outOfMemory;
}
//uprv_memcpy(r->elements, t->elements, t->capacity*sizeof(ContractionTable *));
for(i = 0; i<t->size; i++) {
r->elements[i] = uprv_cnttab_cloneContraction(t->elements[i], status);
}
if(t->CEs != NULL) {
r->CEs = (uint32_t *)uprv_malloc(t->position*sizeof(uint32_t));
/* test for NULL */
if (r->CEs == NULL) {
uprv_free(r->elements);
goto outOfMemory;
}
uprv_memcpy(r->CEs, t->CEs, t->position*sizeof(uint32_t));
} else {
r->CEs = NULL;
}
if(t->codePoints != NULL) {
r->codePoints = (UChar *)uprv_malloc(t->position*sizeof(UChar));
/* test for NULL */
if (r->codePoints == NULL) {
uprv_free(r->CEs);
uprv_free(r->elements);
goto outOfMemory;
}
uprv_memcpy(r->codePoints, t->codePoints, t->position*sizeof(UChar));
} else {
r->codePoints = NULL;
}
if(t->offsets != NULL) {
r->offsets = (int32_t *)uprv_malloc(t->size*sizeof(int32_t));
/* test for NULL */
if (r->offsets == NULL) {
uprv_free(r->codePoints);
uprv_free(r->CEs);
uprv_free(r->elements);
goto outOfMemory;
}
uprv_memcpy(r->offsets, t->offsets, t->size*sizeof(int32_t));
} else {
r->offsets = NULL;
}
return r;
outOfMemory:
*status = U_MEMORY_ALLOCATION_ERROR;
if (r) uprv_free(r);
return NULL;
}
U_CAPI void U_EXPORT2
uprv_cnttab_close(CntTable *table) {
int32_t i = 0;
for(i = 0; i<table->size; i++) {
uprv_free(table->elements[i]->CEs);
uprv_free(table->elements[i]->codePoints);
uprv_free(table->elements[i]);
}
uprv_free(table->elements);
uprv_free(table->CEs);
uprv_free(table->offsets);
uprv_free(table->codePoints);
uprv_free(table);
}
/* this is for adding non contractions */
U_CAPI uint32_t U_EXPORT2
uprv_cnttab_changeLastCE(CntTable *table, uint32_t element, uint32_t value, UErrorCode *status) {
element &= 0xFFFFFF;
ContractionTable *tbl = NULL;
if(U_FAILURE(*status)) {
return 0;
}
if((element == 0xFFFFFF) || (tbl = table->elements[element]) == NULL) {
return 0;
}
tbl->CEs[tbl->position-1] = value;
return(constructContractCE(table->currentTag, element));
}
/* 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 */
U_CAPI uint32_t U_EXPORT2
uprv_cnttab_insertContraction(CntTable *table, uint32_t element, UChar codePoint, uint32_t value, UErrorCode *status) {
ContractionTable *tbl = NULL;
if(U_FAILURE(*status)) {
return 0;
}
element &= 0xFFFFFF;
if((element == 0xFFFFFF) || (tbl = table->elements[element]) == NULL) {
tbl = addATableElement(table, &element, status);
if (U_FAILURE(*status)) {
return 0;
}
}
uprv_growTable(tbl, status);
uint32_t offset = 0;
while(tbl->codePoints[offset] < codePoint && offset<tbl->position) {
offset++;
}
uint32_t i = tbl->position;
for(i = tbl->position; i > offset; i--) {
tbl->CEs[i] = tbl->CEs[i-1];
tbl->codePoints[i] = tbl->codePoints[i-1];
}
tbl->CEs[offset] = value;
tbl->codePoints[offset] = codePoint;
tbl->position++;
return(constructContractCE(table->currentTag, element));
}
/* adds more contractions in table. If element is non existant, it creates on. Returns element handle */
U_CAPI uint32_t U_EXPORT2
uprv_cnttab_addContraction(CntTable *table, uint32_t element, UChar codePoint, uint32_t value, UErrorCode *status) {
element &= 0xFFFFFF;
ContractionTable *tbl = NULL;
if(U_FAILURE(*status)) {
return 0;
}
if((element == 0xFFFFFF) || (tbl = table->elements[element]) == NULL) {
tbl = addATableElement(table, &element, status);
if (U_FAILURE(*status)) {
return 0;
}
}
uprv_growTable(tbl, status);
tbl->CEs[tbl->position] = value;
tbl->codePoints[tbl->position] = codePoint;
tbl->position++;
return(constructContractCE(table->currentTag, element));
}
/* sets a part of contraction sequence in table. If element is non existant, it creates on. Returns element handle */
U_CAPI uint32_t U_EXPORT2
uprv_cnttab_setContraction(CntTable *table, uint32_t element, uint32_t offset, UChar codePoint, uint32_t value, UErrorCode *status) {
element &= 0xFFFFFF;
ContractionTable *tbl = NULL;
if(U_FAILURE(*status)) {
return 0;
}
if((element == 0xFFFFFF) || (tbl = table->elements[element]) == NULL) {
tbl = addATableElement(table, &element, status);
if (U_FAILURE(*status)) {
return 0;
}
}
if(offset >= tbl->size) {
*status = U_INDEX_OUTOFBOUNDS_ERROR;
return 0;
}
tbl->CEs[offset] = value;
tbl->codePoints[offset] = codePoint;
//return(offset);
return(constructContractCE(table->currentTag, element));
}
static ContractionTable *_cnttab_getContractionTable(CntTable *table, uint32_t element) {
element &= 0xFFFFFF;
ContractionTable *tbl = NULL;
if(element != 0xFFFFFF) {
tbl = table->elements[element]; /* This could also return NULL */
}
return tbl;
}
static int32_t _cnttab_findCP(ContractionTable *tbl, UChar codePoint) {
uint32_t position = 0;
if(tbl == NULL) {
return -1;
}
while(codePoint > tbl->codePoints[position]) {
position++;
if(position > tbl->position) {
return -1;
}
}
if (codePoint == tbl->codePoints[position]) {
return position;
} else {
return -1;
}
}
static uint32_t _cnttab_getCE(ContractionTable *tbl, int32_t position) {
if(tbl == NULL) {
return UCOL_NOT_FOUND;
}
if((uint32_t)position > tbl->position || position == -1) {
return UCOL_NOT_FOUND;
} else {
return tbl->CEs[position];
}
}
U_CAPI int32_t U_EXPORT2
uprv_cnttab_findCP(CntTable *table, uint32_t element, UChar codePoint, UErrorCode *status) {
if(U_FAILURE(*status)) {
return 0;
}
return _cnttab_findCP(_cnttab_getContractionTable(table, element), codePoint);
}
U_CAPI uint32_t U_EXPORT2
uprv_cnttab_getCE(CntTable *table, uint32_t element, uint32_t position, UErrorCode *status) {
if(U_FAILURE(*status)) {
return UCOL_NOT_FOUND;
}
return(_cnttab_getCE(_cnttab_getContractionTable(table, element), position));
}
U_CAPI uint32_t U_EXPORT2
uprv_cnttab_findCE(CntTable *table, uint32_t element, UChar codePoint, UErrorCode *status) {
if(U_FAILURE(*status)) {
return UCOL_NOT_FOUND;
}
ContractionTable *tbl = _cnttab_getContractionTable(table, element);
return _cnttab_getCE(tbl, _cnttab_findCP(tbl, codePoint));
}
U_CAPI UBool U_EXPORT2
uprv_cnttab_isTailored(CntTable *table, uint32_t element, UChar *ztString, UErrorCode *status) {
if(U_FAILURE(*status)) {
return FALSE;
}
while(*(ztString)!=0) {
element = uprv_cnttab_findCE(table, element, *(ztString), status);
if(element == UCOL_NOT_FOUND) {
return FALSE;
}
if(!isCntTableElement(element)) {
return TRUE;
}
ztString++;
}
return (UBool)(uprv_cnttab_getCE(table, element, 0, status) != UCOL_NOT_FOUND);
}
U_CAPI uint32_t U_EXPORT2
uprv_cnttab_changeContraction(CntTable *table, uint32_t element, UChar codePoint, uint32_t newCE, UErrorCode *status) {
element &= 0xFFFFFF;
ContractionTable *tbl = NULL;
if(U_FAILURE(*status)) {
return 0;
}
if((element == 0xFFFFFF) || (tbl = table->elements[element]) == NULL) {
return 0;
}
uint32_t position = 0;
while(codePoint > tbl->codePoints[position]) {
position++;
if(position > tbl->position) {
return UCOL_NOT_FOUND;
}
}
if (codePoint == tbl->codePoints[position]) {
tbl->CEs[position] = newCE;
return element;
} else {
return UCOL_NOT_FOUND;
}
}
#endif /* #if !UCONFIG_NO_COLLATION */