DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Mercurial (31ec81b5d7bb)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955
/*
*******************************************************************************
*   Copyright (C) 2004-2012, International Business Machines
*   Corporation and others.  All Rights Reserved.
*******************************************************************************
*   file name:  ucol_sit.cpp
*   encoding:   US-ASCII
*   tab size:   8 (not used)
*   indentation:4
*
* Modification history
* Date        Name      Comments
* 03/12/2004  weiv      Creation
*/

#include "unicode/ustring.h"
#include "unicode/udata.h"

#include "utracimp.h"
#include "ucol_imp.h"
#include "ucol_tok.h"
#include "cmemory.h"
#include "cstring.h"
#include "uresimp.h"
#include "unicode/coll.h"

#ifdef UCOL_TRACE_SIT
# include <stdio.h>
#endif

#if !UCONFIG_NO_COLLATION

enum OptionsList {
    UCOL_SIT_LANGUAGE = 0,
    UCOL_SIT_SCRIPT   = 1,
    UCOL_SIT_REGION   = 2,
    UCOL_SIT_VARIANT  = 3,
    UCOL_SIT_KEYWORD  = 4,
    UCOL_SIT_PROVIDER = 5,
    UCOL_SIT_LOCELEMENT_MAX = UCOL_SIT_PROVIDER, /* the last element that's part of LocElements */

    UCOL_SIT_BCP47,
    UCOL_SIT_STRENGTH,
    UCOL_SIT_CASE_LEVEL,
    UCOL_SIT_CASE_FIRST,
    UCOL_SIT_NUMERIC_COLLATION,
    UCOL_SIT_ALTERNATE_HANDLING,
    UCOL_SIT_NORMALIZATION_MODE,
    UCOL_SIT_FRENCH_COLLATION,
    UCOL_SIT_HIRAGANA_QUATERNARY,
    UCOL_SIT_VARIABLE_TOP,
    UCOL_SIT_VARIABLE_TOP_VALUE,
    UCOL_SIT_ITEMS_COUNT
};

/* option starters chars. */
static const char alternateHArg     = 'A';
static const char variableTopValArg = 'B';
static const char caseFirstArg      = 'C';
static const char numericCollArg    = 'D';
static const char caseLevelArg      = 'E';
static const char frenchCollArg     = 'F';
static const char hiraganaQArg      = 'H';
static const char keywordArg        = 'K';
static const char languageArg       = 'L';
static const char normArg           = 'N';
static const char providerArg       = 'P';
static const char regionArg         = 'R';
static const char strengthArg       = 'S';
static const char variableTopArg    = 'T';
static const char variantArg        = 'V';
static const char RFC3066Arg        = 'X';
static const char scriptArg         = 'Z';

static const char collationKeyword[]  = "@collation=";
static const char providerKeyword[]  = "@sp=";


static const int32_t locElementCount = UCOL_SIT_LOCELEMENT_MAX+1;
static const int32_t locElementCapacity = 32;
static const int32_t loc3066Capacity = 256;
static const int32_t locProviderCapacity = 10;
static const int32_t internalBufferSize = 512;

/* structure containing specification of a collator. Initialized
 * from a short string. Also used to construct a short string from a
 * collator instance
 */
struct CollatorSpec {
    char locElements[locElementCount][locElementCapacity];
    char locale[loc3066Capacity];
    char provider[locProviderCapacity];
    UColAttributeValue options[UCOL_ATTRIBUTE_COUNT];
    uint32_t variableTopValue;
    UChar variableTopString[locElementCapacity];
    int32_t variableTopStringLen;
    UBool variableTopSet;
    struct {
        const char *start;
        int32_t len;
    } entries[UCOL_SIT_ITEMS_COUNT];
};


/* structure for converting between character attribute
 * representation and real collation attribute value.
 */
struct AttributeConversion {
    char letter;
    UColAttributeValue value;
};

static const AttributeConversion conversions[12] = {
    { '1', UCOL_PRIMARY },
    { '2', UCOL_SECONDARY },
    { '3', UCOL_TERTIARY },
    { '4', UCOL_QUATERNARY },
    { 'D', UCOL_DEFAULT },
    { 'I', UCOL_IDENTICAL },
    { 'L', UCOL_LOWER_FIRST },
    { 'N', UCOL_NON_IGNORABLE },
    { 'O', UCOL_ON },
    { 'S', UCOL_SHIFTED },
    { 'U', UCOL_UPPER_FIRST },
    { 'X', UCOL_OFF }
};


static char
ucol_sit_attributeValueToLetter(UColAttributeValue value, UErrorCode *status) {
    uint32_t i = 0;
    for(i = 0; i < sizeof(conversions)/sizeof(conversions[0]); i++) {
        if(conversions[i].value == value) {
            return conversions[i].letter;
        }
    }
    *status = U_ILLEGAL_ARGUMENT_ERROR;
#ifdef UCOL_TRACE_SIT
    fprintf(stderr, "%s:%d: unknown UColAttributeValue %d: %s\n", __FILE__, __LINE__, value, u_errorName(*status));
#endif    
    return 0;
}

static UColAttributeValue
ucol_sit_letterToAttributeValue(char letter, UErrorCode *status) {
    uint32_t i = 0;
    for(i = 0; i < sizeof(conversions)/sizeof(conversions[0]); i++) {
        if(conversions[i].letter == letter) {
            return conversions[i].value;
        }
    }
    *status = U_ILLEGAL_ARGUMENT_ERROR;
#ifdef UCOL_TRACE_SIT
    fprintf(stderr, "%s:%d: unknown letter %c: %s\n", __FILE__, __LINE__, letter, u_errorName(*status));
#endif    
    return UCOL_DEFAULT;
}

/* function prototype for functions used to parse a short string */
U_CDECL_BEGIN
typedef const char* U_CALLCONV
ActionFunction(CollatorSpec *spec, uint32_t value1, const char* string,
               UErrorCode *status);
U_CDECL_END

U_CDECL_BEGIN
static const char* U_CALLCONV
_processLocaleElement(CollatorSpec *spec, uint32_t value, const char* string,
                      UErrorCode *status)
{
    int32_t len = 0;
    do {
        if(value == UCOL_SIT_LANGUAGE || value == UCOL_SIT_KEYWORD || value == UCOL_SIT_PROVIDER) {
            spec->locElements[value][len++] = uprv_tolower(*string);
        } else {
            spec->locElements[value][len++] = *string;
        }
    } while(*(++string) != '_' && *string && len < locElementCapacity);
    if(len >= locElementCapacity) {
        *status = U_BUFFER_OVERFLOW_ERROR;
        return string;
    }
    // don't skip the underscore at the end
    return string;
}
U_CDECL_END

U_CDECL_BEGIN
static const char* U_CALLCONV
_processRFC3066Locale(CollatorSpec *spec, uint32_t, const char* string,
                      UErrorCode *status)
{
    char terminator = *string;
    string++;
    const char *end = uprv_strchr(string+1, terminator);
    if(end == NULL || end - string >= loc3066Capacity) {
        *status = U_BUFFER_OVERFLOW_ERROR;
        return string;
    } else {
        uprv_strncpy(spec->locale, string, end-string);
        return end+1;
    }
}

U_CDECL_END

U_CDECL_BEGIN
static const char* U_CALLCONV
_processCollatorOption(CollatorSpec *spec, uint32_t option, const char* string,
                       UErrorCode *status)
{
    spec->options[option] = ucol_sit_letterToAttributeValue(*string, status);
    if((*(++string) != '_' && *string) || U_FAILURE(*status)) {
#ifdef UCOL_TRACE_SIT
    fprintf(stderr, "%s:%d: unknown collator option at '%s': %s\n", __FILE__, __LINE__, string, u_errorName(*status));
#endif    
        *status = U_ILLEGAL_ARGUMENT_ERROR;
    }
    return string;
}
U_CDECL_END


static UChar
readHexCodeUnit(const char **string, UErrorCode *status)
{
    UChar result = 0;
    int32_t value = 0;
    char c;
    int32_t noDigits = 0;
    while((c = **string) != 0 && noDigits < 4) {
        if( c >= '0' && c <= '9') {
            value = c - '0';
        } else if ( c >= 'a' && c <= 'f') {
            value = c - 'a' + 10;
        } else if ( c >= 'A' && c <= 'F') {
            value = c - 'A' + 10;
        } else {
            *status = U_ILLEGAL_ARGUMENT_ERROR;
#ifdef UCOL_TRACE_SIT
            fprintf(stderr, "%s:%d: Bad hex char at '%s': %s\n", __FILE__, __LINE__, *string, u_errorName(*status));
#endif    
            return 0;
        }
        result = (result << 4) | (UChar)value;
        noDigits++;
        (*string)++;
    }
    // if the string was terminated before we read 4 digits, set an error
    if(noDigits < 4) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
#ifdef UCOL_TRACE_SIT
        fprintf(stderr, "%s:%d: Short (only %d digits, wanted 4) at '%s': %s\n", __FILE__, __LINE__, noDigits,*string, u_errorName(*status));
#endif    
    }
    return result;
}

U_CDECL_BEGIN
static const char* U_CALLCONV
_processVariableTop(CollatorSpec *spec, uint32_t value1, const char* string, UErrorCode *status)
{
    // get four digits
    int32_t i = 0;
    if(!value1) {
        while(U_SUCCESS(*status) && i < locElementCapacity && *string != 0 && *string != '_') {
            spec->variableTopString[i++] = readHexCodeUnit(&string, status);
        }
        spec->variableTopStringLen = i;
        if(i == locElementCapacity && *string != 0 && *string != '_') {
            *status = U_BUFFER_OVERFLOW_ERROR;
        }
    } else {
        spec->variableTopValue = readHexCodeUnit(&string, status);
    }
    if(U_SUCCESS(*status)) {
        spec->variableTopSet = TRUE;
    }
    return string;
}
U_CDECL_END


/* Table for parsing short strings */
struct ShortStringOptions {
    char optionStart;
    ActionFunction *action;
    uint32_t attr;
};

static const ShortStringOptions options[UCOL_SIT_ITEMS_COUNT] =
{
/* 10 ALTERNATE_HANDLING */   {alternateHArg,     _processCollatorOption, UCOL_ALTERNATE_HANDLING }, // alternate  N, S, D
/* 15 VARIABLE_TOP_VALUE */   {variableTopValArg, _processVariableTop,    1 },
/* 08 CASE_FIRST */           {caseFirstArg,      _processCollatorOption, UCOL_CASE_FIRST }, // case first L, U, X, D
/* 09 NUMERIC_COLLATION */    {numericCollArg,    _processCollatorOption, UCOL_NUMERIC_COLLATION }, // codan      O, X, D
/* 07 CASE_LEVEL */           {caseLevelArg,      _processCollatorOption, UCOL_CASE_LEVEL }, // case level O, X, D
/* 12 FRENCH_COLLATION */     {frenchCollArg,     _processCollatorOption, UCOL_FRENCH_COLLATION }, // french     O, X, D
/* 13 HIRAGANA_QUATERNARY] */ {hiraganaQArg,      _processCollatorOption, UCOL_HIRAGANA_QUATERNARY_MODE }, // hiragana   O, X, D
/* 04 KEYWORD */              {keywordArg,        _processLocaleElement,  UCOL_SIT_KEYWORD }, // keyword
/* 00 LANGUAGE */             {languageArg,       _processLocaleElement,  UCOL_SIT_LANGUAGE }, // language
/* 11 NORMALIZATION_MODE */   {normArg,           _processCollatorOption, UCOL_NORMALIZATION_MODE }, // norm       O, X, D
/* 02 REGION */               {regionArg,         _processLocaleElement,  UCOL_SIT_REGION }, // region
/* 06 STRENGTH */             {strengthArg,       _processCollatorOption, UCOL_STRENGTH }, // strength   1, 2, 3, 4, I, D
/* 14 VARIABLE_TOP */         {variableTopArg,    _processVariableTop,    0 },
/* 03 VARIANT */              {variantArg,        _processLocaleElement,  UCOL_SIT_VARIANT }, // variant
/* 05 RFC3066BIS */           {RFC3066Arg,        _processRFC3066Locale,  0 }, // rfc3066bis locale name
/* 01 SCRIPT */               {scriptArg,         _processLocaleElement,  UCOL_SIT_SCRIPT },  // script
/*    PROVIDER */             {providerArg,       _processLocaleElement, UCOL_SIT_PROVIDER }
};


static
const char* ucol_sit_readOption(const char *start, CollatorSpec *spec,
                            UErrorCode *status)
{
  int32_t i = 0;

  for(i = 0; i < UCOL_SIT_ITEMS_COUNT; i++) {
      if(*start == options[i].optionStart) {
          spec->entries[i].start = start;
          const char* end = options[i].action(spec, options[i].attr, start+1, status);
          spec->entries[i].len = (int32_t)(end - start);
          return end;
      }
  }
  *status = U_ILLEGAL_ARGUMENT_ERROR;
#ifdef UCOL_TRACE_SIT
  fprintf(stderr, "%s:%d: Unknown option at '%s': %s\n", __FILE__, __LINE__, start, u_errorName(*status));
#endif
  return start;
}

static
void ucol_sit_initCollatorSpecs(CollatorSpec *spec)
{
    // reset everything
    uprv_memset(spec, 0, sizeof(CollatorSpec));
    // set collation options to default
    int32_t i = 0;
    for(i = 0; i < UCOL_ATTRIBUTE_COUNT; i++) {
        spec->options[i] = UCOL_DEFAULT;
    }
}

static const char*
ucol_sit_readSpecs(CollatorSpec *s, const char *string,
                        UParseError *parseError, UErrorCode *status)
{
    const char *definition = string;
    while(U_SUCCESS(*status) && *string) {
        string = ucol_sit_readOption(string, s, status);
        // advance over '_'
        while(*string && *string == '_') {
            string++;
        }
    }
    if(U_FAILURE(*status)) {
        parseError->offset = (int32_t)(string - definition);
    }
    return string;
}

static
int32_t ucol_sit_dumpSpecs(CollatorSpec *s, char *destination, int32_t capacity, UErrorCode *status)
{
    int32_t i = 0, j = 0;
    int32_t len = 0;
    char optName;
    if(U_SUCCESS(*status)) {
        for(i = 0; i < UCOL_SIT_ITEMS_COUNT; i++) {
            if(s->entries[i].start) {
                if(len) {
                    if(len < capacity) {
                        uprv_strcat(destination, "_");
                    }
                    len++;
                }
                optName = *(s->entries[i].start);
                if(optName == languageArg || optName == regionArg || optName == variantArg || optName == keywordArg) {
                    for(j = 0; j < s->entries[i].len; j++) {
                        if(len + j < capacity) {
                            destination[len+j] = uprv_toupper(*(s->entries[i].start+j));
                        }
                    }
                    len += s->entries[i].len;
                } else {
                    len += s->entries[i].len;
                    if(len < capacity) {
                        uprv_strncat(destination,s->entries[i].start, s->entries[i].len);
                    }
                }
            }
        }
        return len;
    } else {
        return 0;
    }
}

static void
ucol_sit_calculateWholeLocale(CollatorSpec *s) {
    // put the locale together, unless we have a done
    // locale
    if(s->locale[0] == 0) {
        // first the language
        uprv_strcat(s->locale, s->locElements[UCOL_SIT_LANGUAGE]);
        // then the script, if present
        if(*(s->locElements[UCOL_SIT_SCRIPT])) {
            uprv_strcat(s->locale, "_");
            uprv_strcat(s->locale, s->locElements[UCOL_SIT_SCRIPT]);
        }
        // then the region, if present
        if(*(s->locElements[UCOL_SIT_REGION])) {
            uprv_strcat(s->locale, "_");
            uprv_strcat(s->locale, s->locElements[UCOL_SIT_REGION]);
        } else if(*(s->locElements[UCOL_SIT_VARIANT])) { // if there is a variant, we need an underscore
            uprv_strcat(s->locale, "_");
        }
        // add variant, if there
        if(*(s->locElements[UCOL_SIT_VARIANT])) {
            uprv_strcat(s->locale, "_");
            uprv_strcat(s->locale, s->locElements[UCOL_SIT_VARIANT]);
        }

        // if there is a collation keyword, add that too
        if(*(s->locElements[UCOL_SIT_KEYWORD])) {
            uprv_strcat(s->locale, collationKeyword);
            uprv_strcat(s->locale, s->locElements[UCOL_SIT_KEYWORD]);
        }

        // if there is a provider keyword, add that too
        if(*(s->locElements[UCOL_SIT_PROVIDER])) {
            uprv_strcat(s->locale, providerKeyword);
            uprv_strcat(s->locale, s->locElements[UCOL_SIT_PROVIDER]);
        }
    }
}


U_CAPI void U_EXPORT2
ucol_prepareShortStringOpen( const char *definition,
                          UBool,
                          UParseError *parseError,
                          UErrorCode *status)
{
    if(U_FAILURE(*status)) return;

    UParseError internalParseError;

    if(!parseError) {
        parseError = &internalParseError;
    }
    parseError->line = 0;
    parseError->offset = 0;
    parseError->preContext[0] = 0;
    parseError->postContext[0] = 0;


    // first we want to pick stuff out of short string.
    // we'll end up with an UCA version, locale and a bunch of
    // settings

    // analyse the string in order to get everything we need.
    CollatorSpec s;
    ucol_sit_initCollatorSpecs(&s);
    ucol_sit_readSpecs(&s, definition, parseError, status);
    ucol_sit_calculateWholeLocale(&s);

    char buffer[internalBufferSize];
    uprv_memset(buffer, 0, internalBufferSize);
    uloc_canonicalize(s.locale, buffer, internalBufferSize, status);

    UResourceBundle *b = ures_open(U_ICUDATA_COLL, buffer, status);
    /* we try to find stuff from keyword */
    UResourceBundle *collations = ures_getByKey(b, "collations", NULL, status);
    UResourceBundle *collElem = NULL;
    char keyBuffer[256];
    // if there is a keyword, we pick it up and try to get elements
    if(!uloc_getKeywordValue(buffer, "collation", keyBuffer, 256, status)) {
      // no keyword. we try to find the default setting, which will give us the keyword value
      UResourceBundle *defaultColl = ures_getByKeyWithFallback(collations, "default", NULL, status);
      if(U_SUCCESS(*status)) {
        int32_t defaultKeyLen = 0;
        const UChar *defaultKey = ures_getString(defaultColl, &defaultKeyLen, status);
        u_UCharsToChars(defaultKey, keyBuffer, defaultKeyLen);
        keyBuffer[defaultKeyLen] = 0;
      } else {
        *status = U_INTERNAL_PROGRAM_ERROR;
        return;
      }
      ures_close(defaultColl);
    }
    collElem = ures_getByKeyWithFallback(collations, keyBuffer, collElem, status);
    ures_close(collElem);
    ures_close(collations);
    ures_close(b);
}


U_CAPI UCollator* U_EXPORT2
ucol_openFromShortString( const char *definition,
                          UBool forceDefaults,
                          UParseError *parseError,
                          UErrorCode *status)
{
    UTRACE_ENTRY_OC(UTRACE_UCOL_OPEN_FROM_SHORT_STRING);
    UTRACE_DATA1(UTRACE_INFO, "short string = \"%s\"", definition);

    if(U_FAILURE(*status)) return 0;

    UParseError internalParseError;

    if(!parseError) {
        parseError = &internalParseError;
    }
    parseError->line = 0;
    parseError->offset = 0;
    parseError->preContext[0] = 0;
    parseError->postContext[0] = 0;


    // first we want to pick stuff out of short string.
    // we'll end up with an UCA version, locale and a bunch of
    // settings

    // analyse the string in order to get everything we need.
    const char *string = definition;
    CollatorSpec s;
    ucol_sit_initCollatorSpecs(&s);
    string = ucol_sit_readSpecs(&s, definition, parseError, status);
    ucol_sit_calculateWholeLocale(&s);

    char buffer[internalBufferSize];
    uprv_memset(buffer, 0, internalBufferSize);
    uloc_canonicalize(s.locale, buffer, internalBufferSize, status);

    UCollator *result = ucol_open(buffer, status);
    int32_t i = 0;

    for(i = 0; i < UCOL_ATTRIBUTE_COUNT; i++) {
        if(s.options[i] != UCOL_DEFAULT) {
            if(forceDefaults || ucol_getAttribute(result, (UColAttribute)i, status) != s.options[i]) {
                ucol_setAttribute(result, (UColAttribute)i, s.options[i], status);
            }

            if(U_FAILURE(*status)) {
                parseError->offset = (int32_t)(string - definition);
                ucol_close(result);
                return NULL;
            }

        }
    }
    if(s.variableTopSet) {
        if(s.variableTopString[0]) {
            ucol_setVariableTop(result, s.variableTopString, s.variableTopStringLen, status);
        } else { // we set by value, using 'B'
            ucol_restoreVariableTop(result, s.variableTopValue, status);
        }
    }


    if(U_FAILURE(*status)) { // here it can only be a bogus value
        ucol_close(result);
        result = NULL;
    }

    UTRACE_EXIT_PTR_STATUS(result, *status);
    return result;
}


static void appendShortStringElement(const char *src, int32_t len, char *result, int32_t *resultSize, int32_t capacity, char arg)
{
    if(len) {
        if(*resultSize) {
            if(*resultSize < capacity) {
                uprv_strcat(result, "_");
            }
            (*resultSize)++;
        }
        *resultSize += len + 1;
        if(*resultSize < capacity) {
            uprv_strncat(result, &arg, 1);
            uprv_strncat(result, src, len);
        }
    }
}

U_CAPI int32_t U_EXPORT2
ucol_getShortDefinitionString(const UCollator *coll,
                              const char *locale,
                              char *dst,
                              int32_t capacity,
                              UErrorCode *status)
{
    if(U_FAILURE(*status)) return 0;
    if(coll->delegate != NULL) {
      return ((icu::Collator*)coll->delegate)->internalGetShortDefinitionString(locale,dst,capacity,*status);
    }
    char buffer[internalBufferSize];
    uprv_memset(buffer, 0, internalBufferSize*sizeof(char));
    int32_t resultSize = 0;
    char tempbuff[internalBufferSize];
    char locBuff[internalBufferSize];
    uprv_memset(buffer, 0, internalBufferSize*sizeof(char));
    int32_t elementSize = 0;
    UBool isAvailable = 0;
    CollatorSpec s;
    ucol_sit_initCollatorSpecs(&s);

    if(!locale) {
        locale = ucol_getLocaleByType(coll, ULOC_VALID_LOCALE, status);
    }
    elementSize = ucol_getFunctionalEquivalent(locBuff, internalBufferSize, "collation", locale, &isAvailable, status);

    if(elementSize) {
        // we should probably canonicalize here...
        elementSize = uloc_getLanguage(locBuff, tempbuff, internalBufferSize, status);
        appendShortStringElement(tempbuff, elementSize, buffer, &resultSize, /*capacity*/internalBufferSize, languageArg);
        elementSize = uloc_getCountry(locBuff, tempbuff, internalBufferSize, status);
        appendShortStringElement(tempbuff, elementSize, buffer, &resultSize, /*capacity*/internalBufferSize, regionArg);
        elementSize = uloc_getScript(locBuff, tempbuff, internalBufferSize, status);
        appendShortStringElement(tempbuff, elementSize, buffer, &resultSize, /*capacity*/internalBufferSize, scriptArg);
        elementSize = uloc_getVariant(locBuff, tempbuff, internalBufferSize, status);
        appendShortStringElement(tempbuff, elementSize, buffer, &resultSize, /*capacity*/internalBufferSize, variantArg);
        elementSize = uloc_getKeywordValue(locBuff, "collation", tempbuff, internalBufferSize, status);
        appendShortStringElement(tempbuff, elementSize, buffer, &resultSize, /*capacity*/internalBufferSize, keywordArg);
    }

    int32_t i = 0;
    UColAttributeValue attribute = UCOL_DEFAULT;
    for(i = 0; i < UCOL_SIT_ITEMS_COUNT; i++) {
        if(options[i].action == _processCollatorOption) {
            attribute = ucol_getAttributeOrDefault(coll, (UColAttribute)options[i].attr, status);
            if(attribute != UCOL_DEFAULT) {
                char letter = ucol_sit_attributeValueToLetter(attribute, status);
                appendShortStringElement(&letter, 1,
                    buffer, &resultSize, /*capacity*/internalBufferSize, options[i].optionStart);
            }
        }
    }
    if(coll->variableTopValueisDefault == FALSE) {
        //s.variableTopValue = ucol_getVariableTop(coll, status);
        elementSize = T_CString_integerToString(tempbuff, coll->variableTopValue, 16);
        appendShortStringElement(tempbuff, elementSize, buffer, &resultSize, capacity, variableTopValArg);
    }

    UParseError parseError;
    return ucol_normalizeShortDefinitionString(buffer, dst, capacity, &parseError, status);
}

U_CAPI int32_t U_EXPORT2
ucol_normalizeShortDefinitionString(const char *definition,
                                    char *destination,
                                    int32_t capacity,
                                    UParseError *parseError,
                                    UErrorCode *status)
{

    if(U_FAILURE(*status)) {
        return 0;
    }

    if(destination) {
        uprv_memset(destination, 0, capacity*sizeof(char));
    }

    UParseError pe;
    if(!parseError) {
        parseError = &pe;
    }

    // validate
    CollatorSpec s;
    ucol_sit_initCollatorSpecs(&s);
    ucol_sit_readSpecs(&s, definition, parseError, status);
    return ucol_sit_dumpSpecs(&s, destination, capacity, status);
}

U_CAPI UColAttributeValue  U_EXPORT2
ucol_getAttributeOrDefault(const UCollator *coll, UColAttribute attr, UErrorCode *status)
{
    if(U_FAILURE(*status) || coll == NULL) {
      return UCOL_DEFAULT;
    }
    switch(attr) {
    case UCOL_NUMERIC_COLLATION:
        return coll->numericCollationisDefault?UCOL_DEFAULT:coll->numericCollation;
    case UCOL_HIRAGANA_QUATERNARY_MODE:
        return coll->hiraganaQisDefault?UCOL_DEFAULT:coll->hiraganaQ;
    case UCOL_FRENCH_COLLATION: /* attribute for direction of secondary weights*/
        return coll->frenchCollationisDefault?UCOL_DEFAULT:coll->frenchCollation;
    case UCOL_ALTERNATE_HANDLING: /* attribute for handling variable elements*/
        return coll->alternateHandlingisDefault?UCOL_DEFAULT:coll->alternateHandling;
    case UCOL_CASE_FIRST: /* who goes first, lower case or uppercase */
        return coll->caseFirstisDefault?UCOL_DEFAULT:coll->caseFirst;
    case UCOL_CASE_LEVEL: /* do we have an extra case level */
        return coll->caseLevelisDefault?UCOL_DEFAULT:coll->caseLevel;
    case UCOL_NORMALIZATION_MODE: /* attribute for normalization */
        return coll->normalizationModeisDefault?UCOL_DEFAULT:coll->normalizationMode;
    case UCOL_STRENGTH:         /* attribute for strength */
        return coll->strengthisDefault?UCOL_DEFAULT:coll->strength;
    case UCOL_ATTRIBUTE_COUNT:
    default:
        *status = U_ILLEGAL_ARGUMENT_ERROR;
#ifdef UCOL_TRACE_SIT
        fprintf(stderr, "%s:%d: Unknown attr value '%d': %s\n", __FILE__, __LINE__, (int)attr, u_errorName(*status));
#endif
        break;
    }
    return UCOL_DEFAULT;
}


struct contContext {
    const UCollator *coll;
    USet            *conts;
    USet            *expansions;
    USet            *removedContractions;
    UBool           addPrefixes;
    UErrorCode      *status;
};



static void
addSpecial(contContext *context, UChar *buffer, int32_t bufLen,
               uint32_t CE, int32_t leftIndex, int32_t rightIndex, UErrorCode *status)
{
  const UCollator *coll = context->coll;
  USet *contractions = context->conts;
  USet *expansions = context->expansions;
  UBool addPrefixes = context->addPrefixes;

    const UChar *UCharOffset = (UChar *)coll->image+getContractOffset(CE);
    uint32_t newCE = *(coll->contractionCEs + (UCharOffset - coll->contractionIndex));
    // we might have a contraction that ends from previous level
    if(newCE != UCOL_NOT_FOUND) {
      if(isSpecial(CE) && getCETag(CE) == CONTRACTION_TAG && isSpecial(newCE) && getCETag(newCE) == SPEC_PROC_TAG && addPrefixes) {
        addSpecial(context, buffer, bufLen, newCE, leftIndex, rightIndex, status);
      }
      if(contractions && rightIndex-leftIndex > 1) {
            uset_addString(contractions, buffer+leftIndex, rightIndex-leftIndex);
            if(expansions && isSpecial(CE) && getCETag(CE) == EXPANSION_TAG) {
              uset_addString(expansions, buffer+leftIndex, rightIndex-leftIndex);
            }
      }
    }

    UCharOffset++;
    // check whether we're doing contraction or prefix
    if(getCETag(CE) == SPEC_PROC_TAG && addPrefixes) {
      if(leftIndex == 0) {
          *status = U_INTERNAL_PROGRAM_ERROR;
          return;
      }
      --leftIndex;
      while(*UCharOffset != 0xFFFF) {
          newCE = *(coll->contractionCEs + (UCharOffset - coll->contractionIndex));
          buffer[leftIndex] = *UCharOffset;
          if(isSpecial(newCE) && (getCETag(newCE) == CONTRACTION_TAG || getCETag(newCE) == SPEC_PROC_TAG)) {
              addSpecial(context, buffer, bufLen, newCE, leftIndex, rightIndex, status);
          } else {
            if(contractions) {
                uset_addString(contractions, buffer+leftIndex, rightIndex-leftIndex);
            }
            if(expansions && isSpecial(newCE) && getCETag(newCE) == EXPANSION_TAG) {
              uset_addString(expansions, buffer+leftIndex, rightIndex-leftIndex);
            }
          }
          UCharOffset++;
      }
    } else if(getCETag(CE) == CONTRACTION_TAG) {
      if(rightIndex == bufLen-1) {
          *status = U_INTERNAL_PROGRAM_ERROR;
          return;
      }
      while(*UCharOffset != 0xFFFF) {
          newCE = *(coll->contractionCEs + (UCharOffset - coll->contractionIndex));
          buffer[rightIndex] = *UCharOffset;
          if(isSpecial(newCE) && (getCETag(newCE) == CONTRACTION_TAG || getCETag(newCE) == SPEC_PROC_TAG)) {
              addSpecial(context, buffer, bufLen, newCE, leftIndex, rightIndex+1, status);
          } else {
            if(contractions) {
              uset_addString(contractions, buffer+leftIndex, rightIndex+1-leftIndex);
            }
            if(expansions && isSpecial(newCE) && getCETag(newCE) == EXPANSION_TAG) {
              uset_addString(expansions, buffer+leftIndex, rightIndex+1-leftIndex);
            }
          }
          UCharOffset++;
      }
    }

}

U_CDECL_BEGIN
static UBool U_CALLCONV
_processSpecials(const void *context, UChar32 start, UChar32 limit, uint32_t CE)
{
    UErrorCode *status = ((contContext *)context)->status;
    USet *expansions = ((contContext *)context)->expansions;
    USet *removed = ((contContext *)context)->removedContractions;
    UBool addPrefixes = ((contContext *)context)->addPrefixes;
    UChar contraction[internalBufferSize];
    if(isSpecial(CE)) {
      if(((getCETag(CE) == SPEC_PROC_TAG && addPrefixes) || getCETag(CE) == CONTRACTION_TAG)) {
        while(start < limit && U_SUCCESS(*status)) {
            // if there are suppressed contractions, we don't
            // want to add them.
            if(removed && uset_contains(removed, start)) {
                start++;
                continue;
            }
            // we start our contraction from middle, since we don't know if it
            // will grow toward right or left
            contraction[internalBufferSize/2] = (UChar)start;
            addSpecial(((contContext *)context), contraction, internalBufferSize, CE, internalBufferSize/2, internalBufferSize/2+1, status);
            start++;
        }
      } else if(expansions && getCETag(CE) == EXPANSION_TAG) {
        while(start < limit && U_SUCCESS(*status)) {
          uset_add(expansions, start++);
        }
      }
    }
    if(U_FAILURE(*status)) {
        return FALSE;
    } else {
        return TRUE;
    }
}

U_CDECL_END



/**
 * Get a set containing the contractions defined by the collator. The set includes
 * both the UCA contractions and the contractions defined by the collator
 * @param coll collator
 * @param conts the set to hold the result
 * @param status to hold the error code
 * @return the size of the contraction set
 */
U_CAPI int32_t U_EXPORT2
ucol_getContractions( const UCollator *coll,
                  USet *contractions,
                  UErrorCode *status)
{
  ucol_getContractionsAndExpansions(coll, contractions, NULL, FALSE, status);
  return uset_getItemCount(contractions);
}

/**
 * Get a set containing the expansions defined by the collator. The set includes
 * both the UCA expansions and the expansions defined by the tailoring
 * @param coll collator
 * @param conts the set to hold the result
 * @param addPrefixes add the prefix contextual elements to contractions
 * @param status to hold the error code
 *
 * @draft ICU 3.4
 */
U_CAPI void U_EXPORT2
ucol_getContractionsAndExpansions( const UCollator *coll,
                  USet *contractions,
                  USet *expansions,
                  UBool addPrefixes,
                  UErrorCode *status)
{
    if(U_FAILURE(*status)) {
        return;
    }
    if(coll == NULL) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        return;
    }

    if(contractions) {
      uset_clear(contractions);
    }
    if(expansions) {
      uset_clear(expansions);
    }
    int32_t rulesLen = 0;
    const UChar* rules = ucol_getRules(coll, &rulesLen);
    UColTokenParser src;
    ucol_tok_initTokenList(&src, rules, rulesLen, coll->UCA,
                           ucol_tok_getRulesFromBundle, NULL, status);

    contContext c = { NULL, contractions, expansions, src.removeSet, addPrefixes, status };

    // Add the UCA contractions
    c.coll = coll->UCA;
    utrie_enum(&coll->UCA->mapping, NULL, _processSpecials, &c);

    // This is collator specific. Add contractions from a collator
    c.coll = coll;
    c.removedContractions =  NULL;
    utrie_enum(&coll->mapping, NULL, _processSpecials, &c);
    ucol_tok_closeTokenList(&src);
}

U_CAPI int32_t U_EXPORT2
ucol_getUnsafeSet( const UCollator *coll,
                  USet *unsafe,
                  UErrorCode *status)
{
    UChar buffer[internalBufferSize];
    int32_t len = 0;

    uset_clear(unsafe);

    // cccpattern = "[[:^tccc=0:][:^lccc=0:]]", unfortunately variant
    static const UChar cccpattern[25] = { 0x5b, 0x5b, 0x3a, 0x5e, 0x74, 0x63, 0x63, 0x63, 0x3d, 0x30, 0x3a, 0x5d,
                                    0x5b, 0x3a, 0x5e, 0x6c, 0x63, 0x63, 0x63, 0x3d, 0x30, 0x3a, 0x5d, 0x5d, 0x00 };

    // add chars that fail the fcd check
    uset_applyPattern(unsafe, cccpattern, 24, USET_IGNORE_SPACE, status);

    // add Thai/Lao prevowels
    uset_addRange(unsafe, 0xe40, 0xe44);
    uset_addRange(unsafe, 0xec0, 0xec4);
    // add lead/trail surrogates
    uset_addRange(unsafe, 0xd800, 0xdfff);

    USet *contractions = uset_open(0,0);

    int32_t i = 0, j = 0;
    int32_t contsSize = ucol_getContractions(coll, contractions, status);
    UChar32 c = 0;
    // Contraction set consists only of strings
    // to get unsafe code points, we need to
    // break the strings apart and add them to the unsafe set
    for(i = 0; i < contsSize; i++) {
        len = uset_getItem(contractions, i, NULL, NULL, buffer, internalBufferSize, status);
        if(len > 0) {
            j = 0;
            while(j < len) {
                U16_NEXT(buffer, j, len, c);
                if(j < len) {
                    uset_add(unsafe, c);
                }
            }
        }
    }

    uset_close(contractions);

    return uset_size(unsafe);
}
#endif