The Tor Browser: intl/icu/source/i18n/ucol_sit.cpp@6474c204b198 (annotated)

intl/icu/source/i18n/ucol_sit.cpp@6474c204b198 (annotated)

intl/icu/source/i18n/ucol_sit.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /*
 *******************************************************************************
 *   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,
 x5b, 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

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intl/icu/source/i18n/ucol_sit.cpp@6474c204b198 (annotated)

intl/icu/source/i18n/ucol_sit.cpp