intl/icu/source/i18n/ucol_cnt.cpp

changeset 0
6474c204b198
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/intl/icu/source/i18n/ucol_cnt.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,587 @@
     1.4 +/*
     1.5 + *******************************************************************************
     1.6 + *
     1.7 + *   Copyright (C) 2001-2008, International Business Machines
     1.8 + *   Corporation and others.  All Rights Reserved.
     1.9 + *
    1.10 + *******************************************************************************
    1.11 + *   file name:  ucol_cnt.cpp
    1.12 + *   encoding:   US-ASCII
    1.13 + *   tab size:   8 (not used)
    1.14 + *   indentation:4
    1.15 + *
    1.16 + *   created 02/22/2001
    1.17 + *   created by: Vladimir Weinstein
    1.18 + *
    1.19 + * This module maintains a contraction table structure in expanded form
    1.20 + * and provides means to flatten this structure
    1.21 + * 
    1.22 + */
    1.23 +
    1.24 +#include "unicode/utypes.h"
    1.25 +
    1.26 +#if !UCONFIG_NO_COLLATION
    1.27 +
    1.28 +#include "unicode/uchar.h"
    1.29 +#include "ucol_cnt.h"
    1.30 +#include "cmemory.h"
    1.31 +
    1.32 +static void uprv_growTable(ContractionTable *tbl, UErrorCode *status) {
    1.33 +    if(tbl->position == tbl->size) {
    1.34 +        uint32_t *newData = (uint32_t *)uprv_realloc(tbl->CEs, 2*tbl->size*sizeof(uint32_t));
    1.35 +        if(newData == NULL) {
    1.36 +            *status = U_MEMORY_ALLOCATION_ERROR;
    1.37 +            return;
    1.38 +        }
    1.39 +        UChar *newCPs = (UChar *)uprv_realloc(tbl->codePoints, 2*tbl->size*sizeof(UChar));
    1.40 +        if(newCPs == NULL) {
    1.41 +            uprv_free(newData);
    1.42 +            *status = U_MEMORY_ALLOCATION_ERROR;
    1.43 +            return;
    1.44 +        }
    1.45 +        tbl->CEs = newData;
    1.46 +        tbl->codePoints = newCPs;
    1.47 +        tbl->size *= 2;
    1.48 +    }
    1.49 +}
    1.50 +
    1.51 +U_CAPI CntTable*  U_EXPORT2
    1.52 +/*uprv_cnttab_open(CompactEIntArray *mapping, UErrorCode *status) {*/
    1.53 +uprv_cnttab_open(UNewTrie *mapping, UErrorCode *status) {
    1.54 +    if(U_FAILURE(*status)) {
    1.55 +        return 0;
    1.56 +    }
    1.57 +    CntTable *tbl = (CntTable *)uprv_malloc(sizeof(CntTable));
    1.58 +    if(tbl == NULL) {
    1.59 +        *status = U_MEMORY_ALLOCATION_ERROR;
    1.60 +        return NULL;
    1.61 +    }
    1.62 +    tbl->mapping = mapping;
    1.63 +    tbl->elements = (ContractionTable **)uprv_malloc(INIT_EXP_TABLE_SIZE*sizeof(ContractionTable *));
    1.64 +    if(tbl->elements == NULL) {
    1.65 +        *status = U_MEMORY_ALLOCATION_ERROR;
    1.66 +        uprv_free(tbl);
    1.67 +        return NULL;
    1.68 +    }
    1.69 +    tbl->capacity = INIT_EXP_TABLE_SIZE;
    1.70 +    uprv_memset(tbl->elements, 0, INIT_EXP_TABLE_SIZE*sizeof(ContractionTable *));
    1.71 +    tbl->size = 0;
    1.72 +    tbl->position = 0;
    1.73 +    tbl->CEs = NULL;
    1.74 +    tbl->codePoints = NULL;
    1.75 +    tbl->offsets = NULL;
    1.76 +    tbl->currentTag = NOT_FOUND_TAG;
    1.77 +    return tbl;
    1.78 +}
    1.79 +
    1.80 +static ContractionTable *addATableElement(CntTable *table, uint32_t *key, UErrorCode *status) {
    1.81 +    ContractionTable *el = (ContractionTable *)uprv_malloc(sizeof(ContractionTable));
    1.82 +    if(el == NULL) {
    1.83 +        goto outOfMemory;
    1.84 +    }
    1.85 +    el->CEs = (uint32_t *)uprv_malloc(INIT_EXP_TABLE_SIZE*sizeof(uint32_t));
    1.86 +    if(el->CEs == NULL) {
    1.87 +        goto outOfMemory;
    1.88 +    }
    1.89 +
    1.90 +    el->codePoints = (UChar *)uprv_malloc(INIT_EXP_TABLE_SIZE*sizeof(UChar));
    1.91 +    if(el->codePoints == NULL) {
    1.92 +        uprv_free(el->CEs);
    1.93 +        goto outOfMemory;
    1.94 +    }
    1.95 +
    1.96 +    el->position = 0;
    1.97 +    el->size = INIT_EXP_TABLE_SIZE;
    1.98 +    uprv_memset(el->CEs, 0, INIT_EXP_TABLE_SIZE*sizeof(uint32_t));
    1.99 +    uprv_memset(el->codePoints, 0, INIT_EXP_TABLE_SIZE*sizeof(UChar));
   1.100 +
   1.101 +    table->elements[table->size] = el;
   1.102 +
   1.103 +    //uhash_put(table->elements, (void *)table->size, el, status);
   1.104 +
   1.105 +    *key = table->size++;
   1.106 +
   1.107 +    if(table->size == table->capacity) {
   1.108 +        ContractionTable **newElements = (ContractionTable **)uprv_malloc(table->capacity*2*sizeof(ContractionTable *));
   1.109 +        // do realloc
   1.110 +        /*        table->elements = (ContractionTable **)realloc(table->elements, table->capacity*2*sizeof(ContractionTable *));*/
   1.111 +        if(newElements == NULL) {
   1.112 +            uprv_free(el->codePoints);
   1.113 +            uprv_free(el->CEs);
   1.114 +            goto outOfMemory;
   1.115 +        }
   1.116 +        ContractionTable **oldElements = table->elements;
   1.117 +        uprv_memcpy(newElements, oldElements, table->capacity*sizeof(ContractionTable *));
   1.118 +        uprv_memset(newElements+table->capacity, 0, table->capacity*sizeof(ContractionTable *));
   1.119 +        table->capacity *= 2;
   1.120 +        table->elements = newElements;
   1.121 +        uprv_free(oldElements);
   1.122 +    }
   1.123 +
   1.124 +    return el;
   1.125 +
   1.126 +outOfMemory:
   1.127 +    *status = U_MEMORY_ALLOCATION_ERROR;
   1.128 +    if (el) uprv_free(el);
   1.129 +    return NULL;
   1.130 +}
   1.131 +
   1.132 +U_CAPI int32_t  U_EXPORT2
   1.133 +uprv_cnttab_constructTable(CntTable *table, uint32_t mainOffset, UErrorCode *status) {
   1.134 +    int32_t i = 0, j = 0;
   1.135 +    if(U_FAILURE(*status) || table->size == 0) {
   1.136 +        return 0;
   1.137 +    }
   1.138 +
   1.139 +    table->position = 0;
   1.140 +
   1.141 +    if(table->offsets != NULL) {
   1.142 +        uprv_free(table->offsets);
   1.143 +    }
   1.144 +    table->offsets = (int32_t *)uprv_malloc(table->size*sizeof(int32_t));
   1.145 +    if(table->offsets == NULL) {
   1.146 +        *status = U_MEMORY_ALLOCATION_ERROR;
   1.147 +        return 0;
   1.148 +    }
   1.149 +
   1.150 +
   1.151 +    /* See how much memory we need */
   1.152 +    for(i = 0; i<table->size; i++) {
   1.153 +        table->offsets[i] = table->position+mainOffset;
   1.154 +        table->position += table->elements[i]->position;
   1.155 +    }
   1.156 +
   1.157 +    /* Allocate it */
   1.158 +    if(table->CEs != NULL) {
   1.159 +        uprv_free(table->CEs);
   1.160 +    }
   1.161 +    table->CEs = (uint32_t *)uprv_malloc(table->position*sizeof(uint32_t));
   1.162 +    if(table->CEs == NULL) {
   1.163 +        *status = U_MEMORY_ALLOCATION_ERROR;
   1.164 +        uprv_free(table->offsets);
   1.165 +        table->offsets = NULL;
   1.166 +        return 0;
   1.167 +    }
   1.168 +    uprv_memset(table->CEs, '?', table->position*sizeof(uint32_t));
   1.169 +
   1.170 +    if(table->codePoints != NULL) {
   1.171 +        uprv_free(table->codePoints);
   1.172 +    }
   1.173 +    table->codePoints = (UChar *)uprv_malloc(table->position*sizeof(UChar));
   1.174 +    if(table->codePoints == NULL) {
   1.175 +        *status = U_MEMORY_ALLOCATION_ERROR;
   1.176 +        uprv_free(table->offsets);
   1.177 +        table->offsets = NULL;
   1.178 +        uprv_free(table->CEs);
   1.179 +        table->CEs = NULL;
   1.180 +        return 0;
   1.181 +    }
   1.182 +    uprv_memset(table->codePoints, '?', table->position*sizeof(UChar));
   1.183 +
   1.184 +    /* Now stuff the things in*/
   1.185 +
   1.186 +    UChar *cpPointer = table->codePoints;
   1.187 +    uint32_t *CEPointer = table->CEs;
   1.188 +    for(i = 0; i<table->size; i++) {
   1.189 +        int32_t size = table->elements[i]->position;
   1.190 +        uint8_t ccMax = 0, ccMin = 255, cc = 0;
   1.191 +        for(j = 1; j<size; j++) {
   1.192 +            cc = u_getCombiningClass(table->elements[i]->codePoints[j]);
   1.193 +            if(cc>ccMax) {
   1.194 +                ccMax = cc;
   1.195 +            }
   1.196 +            if(cc<ccMin) {
   1.197 +                ccMin = cc;
   1.198 +            }
   1.199 +            *(cpPointer+j) = table->elements[i]->codePoints[j];
   1.200 +        }
   1.201 +        *cpPointer = ((ccMin==ccMax)?1:0 << 8) | ccMax;
   1.202 +
   1.203 +        uprv_memcpy(CEPointer, table->elements[i]->CEs, size*sizeof(uint32_t));
   1.204 +        for(j = 0; j<size; j++) {
   1.205 +            if(isCntTableElement(*(CEPointer+j))) {
   1.206 +                *(CEPointer+j) = constructContractCE(getCETag(*(CEPointer+j)), table->offsets[getContractOffset(*(CEPointer+j))]);
   1.207 +            }
   1.208 +        }
   1.209 +        cpPointer += size;
   1.210 +        CEPointer += size;
   1.211 +    }
   1.212 +
   1.213 +    // TODO: this one apparently updates the contraction CEs to point to a real address (relative to the 
   1.214 +    // start of the flat file). However, what is done below is just wrong and it affects building of 
   1.215 +    // tailorings that have constructions in a bad way. At least, one should enumerate the trie. Also,
   1.216 +    // keeping a list of code points that are contractions might be smart, although I'm not sure if it's
   1.217 +    // feasible.
   1.218 +    uint32_t CE;
   1.219 +    for(i = 0; i<=0x10FFFF; i++) {
   1.220 +        /*CE = ucmpe32_get(table->mapping, i);*/
   1.221 +        CE = utrie_get32(table->mapping, i, NULL);
   1.222 +        if(isCntTableElement(CE)) {
   1.223 +            CE = constructContractCE(getCETag(CE), table->offsets[getContractOffset(CE)]);
   1.224 +            /*ucmpe32_set(table->mapping, i, CE);*/
   1.225 +            utrie_set32(table->mapping, i, CE);
   1.226 +        }
   1.227 +    }
   1.228 +
   1.229 +
   1.230 +    return table->position;
   1.231 +}
   1.232 +
   1.233 +static ContractionTable *uprv_cnttab_cloneContraction(ContractionTable *t, UErrorCode *status) {
   1.234 +    ContractionTable *r = (ContractionTable *)uprv_malloc(sizeof(ContractionTable));
   1.235 +    if(r == NULL) {
   1.236 +        goto outOfMemory;
   1.237 +    }
   1.238 +
   1.239 +    r->position = t->position;
   1.240 +    r->size = t->size;
   1.241 +
   1.242 +    r->codePoints = (UChar *)uprv_malloc(sizeof(UChar)*t->size);
   1.243 +    if(r->codePoints == NULL) {
   1.244 +        goto outOfMemory;
   1.245 +    }
   1.246 +    r->CEs = (uint32_t *)uprv_malloc(sizeof(uint32_t)*t->size);
   1.247 +    if(r->CEs == NULL) {
   1.248 +        uprv_free(r->codePoints);
   1.249 +        goto outOfMemory;
   1.250 +    }
   1.251 +    uprv_memcpy(r->codePoints, t->codePoints, sizeof(UChar)*t->size);
   1.252 +    uprv_memcpy(r->CEs, t->CEs, sizeof(uint32_t)*t->size);
   1.253 +
   1.254 +    return r;
   1.255 +
   1.256 +outOfMemory:
   1.257 +    *status = U_MEMORY_ALLOCATION_ERROR;
   1.258 +    if (r) uprv_free(r);
   1.259 +    return NULL;
   1.260 +}
   1.261 +
   1.262 +U_CAPI CntTable* U_EXPORT2
   1.263 +uprv_cnttab_clone(CntTable *t, UErrorCode *status) {
   1.264 +    if(U_FAILURE(*status)) {
   1.265 +        return NULL;
   1.266 +    }
   1.267 +    int32_t i = 0;
   1.268 +    CntTable *r = (CntTable *)uprv_malloc(sizeof(CntTable));
   1.269 +    /* test for NULL */
   1.270 +    if (r == NULL) {
   1.271 +        goto outOfMemory;
   1.272 +    }
   1.273 +    r->position = t->position;
   1.274 +    r->size = t->size;
   1.275 +    r->capacity = t->capacity;
   1.276 +
   1.277 +    r->mapping = t->mapping;
   1.278 +
   1.279 +    r->elements = (ContractionTable **)uprv_malloc(t->capacity*sizeof(ContractionTable *));
   1.280 +    /* test for NULL */
   1.281 +    if (r->elements == NULL) {
   1.282 +        goto outOfMemory;
   1.283 +    }
   1.284 +    //uprv_memcpy(r->elements, t->elements, t->capacity*sizeof(ContractionTable *));
   1.285 +
   1.286 +    for(i = 0; i<t->size; i++) {
   1.287 +        r->elements[i] = uprv_cnttab_cloneContraction(t->elements[i], status);
   1.288 +    }
   1.289 +
   1.290 +    if(t->CEs != NULL) {
   1.291 +        r->CEs = (uint32_t *)uprv_malloc(t->position*sizeof(uint32_t));
   1.292 +        /* test for NULL */
   1.293 +        if (r->CEs == NULL) {
   1.294 +            uprv_free(r->elements);
   1.295 +            goto outOfMemory;
   1.296 +        }
   1.297 +        uprv_memcpy(r->CEs, t->CEs, t->position*sizeof(uint32_t));
   1.298 +    } else {
   1.299 +        r->CEs = NULL;
   1.300 +    }
   1.301 +
   1.302 +    if(t->codePoints != NULL) {
   1.303 +        r->codePoints = (UChar *)uprv_malloc(t->position*sizeof(UChar));
   1.304 +        /* test for NULL */
   1.305 +        if (r->codePoints == NULL) {
   1.306 +            uprv_free(r->CEs);
   1.307 +            uprv_free(r->elements);
   1.308 +            goto outOfMemory;
   1.309 +        }
   1.310 +        uprv_memcpy(r->codePoints, t->codePoints, t->position*sizeof(UChar));
   1.311 +    } else {
   1.312 +        r->codePoints = NULL;
   1.313 +    }
   1.314 +
   1.315 +    if(t->offsets != NULL) {
   1.316 +        r->offsets = (int32_t *)uprv_malloc(t->size*sizeof(int32_t));
   1.317 +        /* test for NULL */
   1.318 +        if (r->offsets == NULL) {
   1.319 +            uprv_free(r->codePoints);
   1.320 +            uprv_free(r->CEs);
   1.321 +            uprv_free(r->elements);
   1.322 +            goto outOfMemory;
   1.323 +        }
   1.324 +        uprv_memcpy(r->offsets, t->offsets, t->size*sizeof(int32_t));
   1.325 +    } else {
   1.326 +        r->offsets = NULL;
   1.327 +    }
   1.328 +
   1.329 +    return r;
   1.330 +
   1.331 +outOfMemory:
   1.332 +    *status = U_MEMORY_ALLOCATION_ERROR;
   1.333 +    if (r) uprv_free(r);
   1.334 +    return NULL;
   1.335 +}
   1.336 +
   1.337 +U_CAPI void  U_EXPORT2
   1.338 +uprv_cnttab_close(CntTable *table) {
   1.339 +    int32_t i = 0;
   1.340 +    for(i = 0; i<table->size; i++) {
   1.341 +        uprv_free(table->elements[i]->CEs);
   1.342 +        uprv_free(table->elements[i]->codePoints);
   1.343 +        uprv_free(table->elements[i]);
   1.344 +    }
   1.345 +    uprv_free(table->elements);
   1.346 +    uprv_free(table->CEs);
   1.347 +    uprv_free(table->offsets);
   1.348 +    uprv_free(table->codePoints);
   1.349 +    uprv_free(table);
   1.350 +}
   1.351 +
   1.352 +/* this is for adding non contractions */
   1.353 +U_CAPI uint32_t  U_EXPORT2
   1.354 +uprv_cnttab_changeLastCE(CntTable *table, uint32_t element, uint32_t value, UErrorCode *status) {
   1.355 +    element &= 0xFFFFFF;
   1.356 +
   1.357 +    ContractionTable *tbl = NULL;
   1.358 +    if(U_FAILURE(*status)) {
   1.359 +        return 0;
   1.360 +    }
   1.361 +
   1.362 +    if((element == 0xFFFFFF) || (tbl = table->elements[element]) == NULL) {
   1.363 +        return 0;
   1.364 +    }
   1.365 +
   1.366 +    tbl->CEs[tbl->position-1] = value;
   1.367 +
   1.368 +    return(constructContractCE(table->currentTag, element));
   1.369 +}
   1.370 +
   1.371 +
   1.372 +/* 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 */
   1.373 +U_CAPI uint32_t  U_EXPORT2
   1.374 +uprv_cnttab_insertContraction(CntTable *table, uint32_t element, UChar codePoint, uint32_t value, UErrorCode *status) {
   1.375 +
   1.376 +    ContractionTable *tbl = NULL;
   1.377 +
   1.378 +    if(U_FAILURE(*status)) {
   1.379 +        return 0;
   1.380 +    }
   1.381 +    element &= 0xFFFFFF;
   1.382 +
   1.383 +    if((element == 0xFFFFFF) || (tbl = table->elements[element]) == NULL) {
   1.384 +        tbl = addATableElement(table, &element, status);
   1.385 +        if (U_FAILURE(*status)) {
   1.386 +            return 0;
   1.387 +        }
   1.388 +    }
   1.389 +
   1.390 +    uprv_growTable(tbl, status);
   1.391 +
   1.392 +    uint32_t offset = 0;
   1.393 +
   1.394 +
   1.395 +    while(tbl->codePoints[offset] < codePoint && offset<tbl->position) {
   1.396 +        offset++;
   1.397 +    }
   1.398 +
   1.399 +    uint32_t i = tbl->position;
   1.400 +    for(i = tbl->position; i > offset; i--) {
   1.401 +        tbl->CEs[i] = tbl->CEs[i-1];
   1.402 +        tbl->codePoints[i] = tbl->codePoints[i-1];
   1.403 +    }
   1.404 +
   1.405 +    tbl->CEs[offset] = value;
   1.406 +    tbl->codePoints[offset] = codePoint;
   1.407 +
   1.408 +    tbl->position++;
   1.409 +
   1.410 +    return(constructContractCE(table->currentTag, element));
   1.411 +}
   1.412 +
   1.413 +
   1.414 +/* adds more contractions in table. If element is non existant, it creates on. Returns element handle */
   1.415 +U_CAPI uint32_t  U_EXPORT2
   1.416 +uprv_cnttab_addContraction(CntTable *table, uint32_t element, UChar codePoint, uint32_t value, UErrorCode *status) {
   1.417 +
   1.418 +    element &= 0xFFFFFF;
   1.419 +
   1.420 +    ContractionTable *tbl = NULL;
   1.421 +
   1.422 +    if(U_FAILURE(*status)) {
   1.423 +        return 0;
   1.424 +    }
   1.425 +
   1.426 +    if((element == 0xFFFFFF) || (tbl = table->elements[element]) == NULL) {
   1.427 +        tbl = addATableElement(table, &element, status);
   1.428 +        if (U_FAILURE(*status)) {
   1.429 +            return 0;
   1.430 +        }
   1.431 +    } 
   1.432 +
   1.433 +    uprv_growTable(tbl, status);
   1.434 +
   1.435 +    tbl->CEs[tbl->position] = value;
   1.436 +    tbl->codePoints[tbl->position] = codePoint;
   1.437 +
   1.438 +    tbl->position++;
   1.439 +
   1.440 +    return(constructContractCE(table->currentTag, element));
   1.441 +}
   1.442 +
   1.443 +/* sets a part of contraction sequence in table. If element is non existant, it creates on. Returns element handle */
   1.444 +U_CAPI uint32_t  U_EXPORT2
   1.445 +uprv_cnttab_setContraction(CntTable *table, uint32_t element, uint32_t offset, UChar codePoint, uint32_t value, UErrorCode *status) {
   1.446 +
   1.447 +    element &= 0xFFFFFF;
   1.448 +    ContractionTable *tbl = NULL;
   1.449 +
   1.450 +    if(U_FAILURE(*status)) {
   1.451 +        return 0;
   1.452 +    }
   1.453 +
   1.454 +    if((element == 0xFFFFFF) || (tbl = table->elements[element]) == NULL) {
   1.455 +        tbl = addATableElement(table, &element, status);
   1.456 +        if (U_FAILURE(*status)) {
   1.457 +            return 0;
   1.458 +        }
   1.459 +        
   1.460 +    }
   1.461 +
   1.462 +    if(offset >= tbl->size) {
   1.463 +        *status = U_INDEX_OUTOFBOUNDS_ERROR;
   1.464 +        return 0;
   1.465 +    }
   1.466 +    tbl->CEs[offset] = value;
   1.467 +    tbl->codePoints[offset] = codePoint;
   1.468 +
   1.469 +    //return(offset);
   1.470 +    return(constructContractCE(table->currentTag, element));
   1.471 +}
   1.472 +
   1.473 +static ContractionTable *_cnttab_getContractionTable(CntTable *table, uint32_t element) {
   1.474 +    element &= 0xFFFFFF;
   1.475 +    ContractionTable *tbl = NULL;
   1.476 +
   1.477 +    if(element != 0xFFFFFF) {
   1.478 +        tbl = table->elements[element]; /* This could also return NULL */
   1.479 +    }
   1.480 +    return tbl;
   1.481 +}
   1.482 +
   1.483 +static int32_t _cnttab_findCP(ContractionTable *tbl, UChar codePoint) {
   1.484 +    uint32_t position = 0;
   1.485 +    if(tbl == NULL) {
   1.486 +        return -1;
   1.487 +    }
   1.488 +
   1.489 +    while(codePoint > tbl->codePoints[position]) {
   1.490 +        position++;
   1.491 +        if(position > tbl->position) {
   1.492 +            return -1;
   1.493 +        }
   1.494 +    }
   1.495 +    if (codePoint == tbl->codePoints[position]) {
   1.496 +        return position;
   1.497 +    } else {
   1.498 +        return -1;
   1.499 +    }
   1.500 +}
   1.501 +
   1.502 +static uint32_t _cnttab_getCE(ContractionTable *tbl, int32_t position) {
   1.503 +    if(tbl == NULL) {
   1.504 +        return UCOL_NOT_FOUND;
   1.505 +    }
   1.506 +    if((uint32_t)position > tbl->position || position == -1) {
   1.507 +        return UCOL_NOT_FOUND;
   1.508 +    } else {
   1.509 +        return tbl->CEs[position];
   1.510 +    }
   1.511 +}
   1.512 +
   1.513 +U_CAPI int32_t  U_EXPORT2
   1.514 +uprv_cnttab_findCP(CntTable *table, uint32_t element, UChar codePoint, UErrorCode *status) {
   1.515 +
   1.516 +    if(U_FAILURE(*status)) {
   1.517 +        return 0;
   1.518 +    }
   1.519 +
   1.520 +    return _cnttab_findCP(_cnttab_getContractionTable(table, element), codePoint);
   1.521 +}
   1.522 +
   1.523 +U_CAPI uint32_t  U_EXPORT2
   1.524 +uprv_cnttab_getCE(CntTable *table, uint32_t element, uint32_t position, UErrorCode *status) {
   1.525 +    if(U_FAILURE(*status)) {
   1.526 +        return UCOL_NOT_FOUND;
   1.527 +    }
   1.528 +
   1.529 +    return(_cnttab_getCE(_cnttab_getContractionTable(table, element), position));
   1.530 +}
   1.531 +
   1.532 +U_CAPI uint32_t  U_EXPORT2
   1.533 +uprv_cnttab_findCE(CntTable *table, uint32_t element, UChar codePoint, UErrorCode *status) {
   1.534 +    if(U_FAILURE(*status)) {
   1.535 +        return UCOL_NOT_FOUND;
   1.536 +    }
   1.537 +    ContractionTable *tbl = _cnttab_getContractionTable(table, element);
   1.538 +    return _cnttab_getCE(tbl, _cnttab_findCP(tbl, codePoint));
   1.539 +}
   1.540 +
   1.541 +U_CAPI UBool  U_EXPORT2
   1.542 +uprv_cnttab_isTailored(CntTable *table, uint32_t element, UChar *ztString, UErrorCode *status) {
   1.543 +    if(U_FAILURE(*status)) {
   1.544 +        return FALSE;
   1.545 +    }
   1.546 +
   1.547 +    while(*(ztString)!=0) {
   1.548 +        element = uprv_cnttab_findCE(table, element, *(ztString), status);
   1.549 +        if(element == UCOL_NOT_FOUND) {
   1.550 +            return FALSE;
   1.551 +        }
   1.552 +        if(!isCntTableElement(element)) {
   1.553 +            return TRUE;
   1.554 +        }
   1.555 +        ztString++;
   1.556 +    }
   1.557 +    return (UBool)(uprv_cnttab_getCE(table, element, 0, status) != UCOL_NOT_FOUND);
   1.558 +}
   1.559 +
   1.560 +U_CAPI uint32_t  U_EXPORT2
   1.561 +uprv_cnttab_changeContraction(CntTable *table, uint32_t element, UChar codePoint, uint32_t newCE, UErrorCode *status) {
   1.562 +
   1.563 +    element &= 0xFFFFFF;
   1.564 +    ContractionTable *tbl = NULL;
   1.565 +
   1.566 +    if(U_FAILURE(*status)) {
   1.567 +        return 0;
   1.568 +    }
   1.569 +
   1.570 +    if((element == 0xFFFFFF) || (tbl = table->elements[element]) == NULL) {
   1.571 +        return 0;
   1.572 +    }
   1.573 +
   1.574 +    uint32_t position = 0;
   1.575 +
   1.576 +    while(codePoint > tbl->codePoints[position]) {
   1.577 +        position++;
   1.578 +        if(position > tbl->position) {
   1.579 +            return UCOL_NOT_FOUND;
   1.580 +        }
   1.581 +    }
   1.582 +    if (codePoint == tbl->codePoints[position]) {
   1.583 +        tbl->CEs[position] = newCE;
   1.584 +        return element;
   1.585 +    } else {
   1.586 +        return UCOL_NOT_FOUND;
   1.587 +    }
   1.588 +}
   1.589 +
   1.590 +#endif /* #if !UCONFIG_NO_COLLATION */

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