/* ********************************************************************** * Copyright (c) 2001-2002, International Business Machines * Corporation and others. All Rights Reserved. ********************************************************************** */ #include "upropset.h" #include "ustrfmt.h" #include "unicode/unistr.h" #include "unicode/uscript.h" #include "unicode/uniset.h" #include "unicode/parsepos.h" #include "unicode/uchar.h" #include "hash.h" #include "mutex.h" #include "ucln.h" #include "charstr.h" static Hashtable* NAME_MAP = NULL; static Hashtable* CATEGORY_MAP = NULL; /** * A cache mapping character category integers, as returned by * UCharacter.getType(), to sets. Entries are initially * null and are created on demand. */ static UnicodeSet* CATEGORY_CACHE = NULL; /** * A cache mapping script integers, as defined by * UScript, to sets. Entries are initially * null and are created on demand. */ static UnicodeSet* SCRIPT_CACHE = NULL; // Special value codes static const int32_t ANY = -1; // general category: all code points // >From UnicodeData: // 3400;;Lo;0;L;;;;;N;;;;; // 4DB5;;Lo;0;L;;;;;N;;;;; // 4E00;;Lo;0;L;;;;;N;;;;; // 9FA5;;Lo;0;L;;;;;N;;;;; // AC00;;Lo;0;L;;;;;N;;;;; // D7A3;;Lo;0;L;;;;;N;;;;; // D800;;Cs;0;L;;;;;N;;;;; // DB7F;;Cs;0;L;;;;;N;;;;; // DB80;;Cs;0;L;;;;;N;;;;; // DBFF;;Cs;0;L;;;;;N;;;;; // DC00;;Cs;0;L;;;;;N;;;;; // DFFF;;Cs;0;L;;;;;N;;;;; // E000;;Co;0;L;;;;;N;;;;; // F8FF;;Co;0;L;;;;;N;;;;; // 20000;;Lo;0;L;;;;;N;;;;; // 2A6D6;;Lo;0;L;;;;;N;;;;; // F0000;;Co;0;L;;;;;N;;;;; // FFFFD;;Co;0;L;;;;;N;;;;; // 100000;;Co;0;L;;;;;N;;;;; // 10FFFD;;Co;0;L;;;;;N;;;;; // // >Large Blocks of Unassigned: (from DerivedGeneralCategory) // 1044E..1CFFF ; Cn # [52146] // 1D800..1FFFF ; Cn # [10240] // 2A6D7..2F7FF ; Cn # [20777] // 2FA1E..E0000 ; Cn # [722403] // E0080..EFFFF ; Cn # [65408] /** * A set of all characters _except_ the second through last characters of * certain ranges. These ranges are ranges of characters whose * properties are all exactly alike, e.g. CJK Ideographs from * U+4E00 to U+9FA5. */ static UnicodeSet* INCLUSIONS = NULL; //---------------------------------------------------------------- // Unicode string and character constants //---------------------------------------------------------------- static const UChar POSIX_OPEN[] = { 91,58,0 }; // "[:" static const UChar POSIX_CLOSE[] = { 58,93,0 }; // ":]" static const UChar PERL_OPEN[] = { 92,112,0 }; // "\\p" static const UChar PERL_CLOSE[] = { 125,0 }; // "}" static const UChar HAT = 0x005E; /*^*/ static const UChar UPPER_P = 0x0050; /*P*/ static const UChar LEFT_BRACE = 0x007B; /*{*/ static const UChar EQUALS = 0x003D; /*=*/ // TODO: The Inclusion List should be generated from the UCD for each // version, and thus should be accessed from the properties data file // (Even better: move the logic into UCharacter for building these // properties, since that is where it belongs!) // See INCLUSIONS above static const UChar INCLUSIONS_PATTERN[] = {91,94,92,117,51,52,48,49,45,92,117,52,68,66,53,32, 92,117,52,69,48,49,45,92,117,57,70,65,53,32, 92,117,65,67,48,49,45,92,117,68,55,65,51,32, 92,117,68,56,48,49,45,92,117,68,66,55,70,32, 92,117,68,66,56,49,45,92,117,68,66,70,70,32, 92,117,68,67,48,49,45,92,117,68,70,70,70,32, 92,117,69,48,48,49,45,92,117,70,56,70,70,32, 92,85,48,48,48,49,48,52,52,70,45,92,85,48,48,48,49,67,70,70,70,32, 92,85,48,48,48,49,68,56,48,49,45,92,85,48,48,48,49,70,70,70,70,32, 92,85,48,48,48,50,48,48,48,49,45,92,85,48,48,48,50,65,54,68,54,32, 92,85,48,48,48,50,65,54,68,56,45,92,85,48,48,48,50,70,55,70,70,32, 92,85,48,48,48,50,70,65,49,70,45,92,85,48,48,48,69,48,48,48,48,32, 92,85,48,48,48,69,48,48,56,49,45,92,85,48,48,48,69,70,70,70,70,32, 92,85,48,48,48,70,48,48,48,49,45,92,85,48,48,48,70,70,70,70,68,32, 92,85,48,48,49,48,48,48,48,49,45,92,85,48,48,49,48,70,70,70,68,93,0}; // "[^\\u3401-\\u4DB5 \\u4E01-\\u9FA5 \\uAC01-\\uD7A3 \\uD801-\\uDB7F \\uDB81-\\uDBFF \\uDC01-\\uDFFF \\uE001-\\uF8FF \\U0001044F-\\U0001CFFF \\U0001D801-\\U0001FFFF \\U00020001-\\U0002A6D6 \\U0002A6D8-\\U0002F7FF \\U0002FA1F-\\U000E0000 \\U000E0081-\\U000EFFFF \\U000F0001-\\U000FFFFD \\U00100001-\\U0010FFFD]" /** * Cleanup function for UnicodePropertySet */ U_CFUNC UBool upropset_cleanup(void) { if (NAME_MAP != NULL) { delete NAME_MAP; NAME_MAP = NULL; delete CATEGORY_MAP; CATEGORY_MAP = NULL; delete[] CATEGORY_CACHE; CATEGORY_CACHE = NULL; delete[] SCRIPT_CACHE; SCRIPT_CACHE = NULL; delete INCLUSIONS; INCLUSIONS = NULL; } return TRUE; } U_NAMESPACE_BEGIN //---------------------------------------------------------------- // Public API //---------------------------------------------------------------- /** * Return true if the given position, in the given pattern, appears * to be the start of a property set pattern [:foo:], \p{foo}, or * \P{foo}. */ UBool UnicodePropertySet::resemblesPattern(const UnicodeString& pattern, int32_t pos) { // Patterns are at least 5 characters long if ((pos+5) > pattern.length()) { return FALSE; } // Look for an opening [:, [:^, \p, or \P return (0 == pattern.compare(pos, 2, POSIX_OPEN)) || (0 == pattern.caseCompare(pos, 2, PERL_OPEN, U_FOLD_CASE_DEFAULT)); } /** * Create a UnicodeSet by parsing the given pattern at the given * parse position. * * @param pattern the pattern string * @param ppos on entry, the position at which to begin parsing. * This shold be one of the locations marked '^': * * [:blah:] \p{blah} \P{blah} * ^ % ^ % ^ % * * On return, the position after the last character parsed, that is, * the locations marked '%'. If the parse fails, ppos is returned * unchanged. * @return a newly-constructed UnicodeSet object, or null upon * failure. */ UnicodeSet* UnicodePropertySet::createFromPattern(const UnicodeString& pattern, ParsePosition& ppos) { init(); UnicodeSet* set = NULL; int32_t pos = ppos.getIndex(); // On entry, ppos should point to one of the following locations: // Minimum length is 5 characters, e.g. \p{L} if ((pos+5) > pattern.length()) { return NULL; } UBool posix = FALSE; // true for [:pat:], false for \p{pat} \P{pat} UBool invert = FALSE; // Look for an opening [:, [:^, \p, or \P if (0 == pattern.compare(pos, 2, POSIX_OPEN)) { posix = TRUE; pos = skipWhitespace(pattern, pos+2); if (pos < pattern.length() && pattern.charAt(pos) == HAT) { ++pos; invert = TRUE; } } else if (0 == pattern.caseCompare(pos, 2, PERL_OPEN, U_FOLD_CASE_DEFAULT)) { invert = (pattern.charAt(pos+1) == UPPER_P); pos = skipWhitespace(pattern, pos+2); if (pos == pattern.length() || pattern.charAt(pos++) != LEFT_BRACE) { // Syntax error; "\p" or "\P" not followed by "{" return NULL; } } else { // Open delimiter not seen return NULL; } // Look for the matching close delimiter, either :] or } int32_t close = pattern.indexOf(posix ? POSIX_CLOSE : PERL_CLOSE, pos); if (close < 0) { // Syntax error; close delimiter missing return NULL; } // Look for an '=' sign. If this is present, we will parse a // medium \p{gc=Cf} or long \p{GeneralCategory=Format} // pattern. int32_t equals = pattern.indexOf(EQUALS, pos); if (equals >= 0 && equals < close) { // Equals seen; parse medium/long pattern UnicodeString typeName = munge(pattern, pos, equals); UnicodeString valueName = munge(pattern, equals+1, close); SetFactory factory; factory = voidPtrToSetFactory(NAME_MAP->get(typeName)); if (factory == NULL) { // Syntax error; type name not recognized return NULL; } set = (*factory)(valueName); } else { // No equals seen; parse short format \p{Cf} UnicodeString shortName = munge(pattern, pos, close); // First try general category set = createCategorySet(shortName); // If this fails, try script if (set == NULL) { set = createScriptSet(shortName); } } // Upon failure, return NULL with ppos unchanged if (set == NULL) { return NULL; } if (invert) { set->complement(); } // Move to the limit position after the close delimiter ppos.setIndex(close + (posix ? 2 : 1)); return set; } //---------------------------------------------------------------- // Property set factory static methods // NOTE: This will change/go away when we implement UCharacter // based property retrieval. //---------------------------------------------------------------- static UBool _numericValueFilter(UChar32 c, void* context) { int32_t value = * (int32_t*) context; // TODO: Change this to a more generic function, like // u_charNumericValue (when one exists). return u_charDigitValue(c) == value; } UnicodeSet* UnicodePropertySet::createNumericValueSet(const UnicodeString& valueName) { CharString cvalueName(valueName); UnicodeSet* set = new UnicodeSet(); char* end; double value = uprv_strtod(cvalueName, &end); int32_t ivalue = (int32_t) value; if (ivalue != value || ivalue < 0 || *end != 0) { // UCharacter doesn't support negative or non-integral // values, so just return an empty set return set; } initSetFromFilter(*set, _numericValueFilter, &ivalue); return set; } /** * Given a general category value name, create a corresponding * set and return it, or return null if the name is invalid. * @param valueName a pre-munged general category value name */ UnicodeSet* UnicodePropertySet::createCategorySet(const UnicodeString& valueName) { int32_t valueCode = CATEGORY_MAP->geti(valueName); if (valueCode == 0) { return NULL; } UnicodeSet* set = new UnicodeSet(); if (valueCode == ANY) { set->complement(); return set; } for (int32_t cat=0; cataddAll(getCategorySet(cat)); } } return set; } /** * Given a script value name, create a corresponding set and * return it, or return null if the name is invalid. * @param valueName a pre-munged script value name */ UnicodeSet* UnicodePropertySet::createScriptSet(const UnicodeString& valueName) { CharString cvalueName(valueName); UErrorCode ec = U_ZERO_ERROR; const int32_t capacity = 10; UScriptCode script[capacity]={USCRIPT_INVALID_CODE}; // Ignore the return value of uscript_getCode // since this is locale independent. uscript_getCode(cvalueName,script,capacity, &ec); if (script[0] == USCRIPT_INVALID_CODE || U_FAILURE(ec)) { // Syntax error; unknown short name return NULL; } return new UnicodeSet(getScriptSet(script[0])); } //---------------------------------------------------------------- // Utility methods //---------------------------------------------------------------- U_CDECL_BEGIN static UBool U_CALLCONV _enumCategoryRange(const void * /*context*/, UChar32 start, UChar32 limit, UCharCategory type) { CATEGORY_CACHE[type].add(start, limit-1); return TRUE; } U_CDECL_END /** * Returns a UnicodeSet for the given category. This set is * cached and returned again if this method is called again with * the same parameter. * * Callers MUST NOT MODIFY the returned set. */ const UnicodeSet& UnicodePropertySet::getCategorySet(int32_t cat) { if (CATEGORY_CACHE == 0) { CATEGORY_CACHE = new UnicodeSet[32]; // 32 is guaranteed by the Unicode standard if (CATEGORY_CACHE == 0) { return *((const UnicodeSet *)0); } u_enumCharTypes(_enumCategoryRange, 0); } return CATEGORY_CACHE[cat]; } static UBool _scriptFilter(UChar32 c, void* context) { UScriptCode value = * (UScriptCode*) context; UErrorCode ec = U_ZERO_ERROR; return uscript_getScript(c, &ec) == value; } /** * Returns a UnicodeSet for the given script. This set is * cached and returned again if this method is called again with * the same parameter. * * Callers MUST NOT MODIFY the returned set. */ const UnicodeSet& UnicodePropertySet::getScriptSet(UScriptCode script) { if (SCRIPT_CACHE[script].isEmpty()) { initSetFromFilter(SCRIPT_CACHE[script], _scriptFilter, &script); } return SCRIPT_CACHE[script]; } /** * Given a string, munge it to lose the whitespace. So "General * Category " becomes "GeneralCategory". We munge all type and value * strings, and store all type and value keys pre-munged. NOTE: * Unlike the Java version, we do not modify the case, since we use a * case-insensitive compare function. */ UnicodeString UnicodePropertySet::munge(const UnicodeString& str, int32_t start, int32_t limit) { UnicodeString buf; for (int32_t i=start; igetRangeCount(); for (int j=0; jgetRangeStart(j); UChar32 end = INCLUSIONS->getRangeEnd(j); // for all the code points in the range, process for (UChar32 ch = start; ch <= end; ++ch) { // only add to the unicodeset on inflection points -- // where the hasProperty value changes to false if ((*filter)((UChar32) ch, context)) { if (startHasProperty < 0) { startHasProperty = ch; } } else if (startHasProperty >= 0) { set.add((UChar32)startHasProperty, (UChar32)ch-1); startHasProperty = -1; } } } if (startHasProperty >= 0) { set.add((UChar32)startHasProperty, (UChar32)0x10FFFF); } } //---------------------------------------------------------------- // Type and value name maps //---------------------------------------------------------------- /** * Add a type mapping to the name map. */ void UnicodePropertySet::addType(const UnicodeString& shortName, const UnicodeString& longName, SetFactory factory) { UErrorCode ec = U_ZERO_ERROR; void* p = setFactoryToVoidPtr(factory); NAME_MAP->put(shortName, p, ec); NAME_MAP->put(longName, p, ec); } /** * Add a value mapping to the name map. */ void UnicodePropertySet::addValue(Hashtable* map, const UnicodeString& shortName, const UnicodeString& longName, int32_t value) { // assert(value != 0); UErrorCode ec = U_ZERO_ERROR; map->puti(shortName, value, ec); if (longName.length() != 0) { map->puti(longName, value, ec); } } void UnicodePropertySet::init() { if (NAME_MAP != NULL) { return; } NAME_MAP = new Hashtable(TRUE); CATEGORY_MAP = new Hashtable(TRUE); SCRIPT_CACHE = new UnicodeSet[(size_t)USCRIPT_CODE_LIMIT]; // NOTE: We munge all search keys to have no whitespace // and upper case. As such, all stored keys should have // this format. // Load the map with type data addType("GC", "GENERALCATEGORY", createCategorySet); //addType("CC", "COMBININGCLASS", COMBINING_CLASS); //addType("BC", "BIDICLASS", BIDI_CLASS); //addType("DT", "DECOMPOSITIONTYPE", DECOMPOSITION_TYPE); addType("NV", "NUMERICVALUE", createNumericValueSet); //addType("NT", "NUMERICTYPE", NUMERIC_TYPE); //addType("EA", "EASTASIANWIDTH", EAST_ASIAN_WIDTH); //addType("LB", "LINEBREAK", LINE_BREAK); //addType("JT", "JOININGTYPE", JOINING_TYPE); addType("SC", "SCRIPT", createScriptSet); // Load the map with value data // General Category addValue(CATEGORY_MAP, "ANY", "", ANY); // special case addValue(CATEGORY_MAP, "C", "OTHER", (1 << U_CONTROL_CHAR) | (1 << U_FORMAT_CHAR) | (1 << U_GENERAL_OTHER_TYPES) | (1 << U_PRIVATE_USE_CHAR) | (1 << U_SURROGATE)); addValue(CATEGORY_MAP, "CC", "CONTROL", 1 << U_CONTROL_CHAR); addValue(CATEGORY_MAP, "CF", "FORMAT", 1 << U_FORMAT_CHAR); addValue(CATEGORY_MAP, "CN", "UNASSIGNED", 1 << U_GENERAL_OTHER_TYPES); addValue(CATEGORY_MAP, "CO", "PRIVATEUSE", 1 << U_PRIVATE_USE_CHAR); addValue(CATEGORY_MAP, "CS", "SURROGATE", 1 << U_SURROGATE); addValue(CATEGORY_MAP, "L", "LETTER", (1 << U_LOWERCASE_LETTER) | (1 << U_MODIFIER_LETTER) | (1 << U_OTHER_LETTER) | (1 << U_TITLECASE_LETTER) | (1 << U_UPPERCASE_LETTER)); addValue(CATEGORY_MAP, "LL", "LOWERCASELETTER", 1 << U_LOWERCASE_LETTER); addValue(CATEGORY_MAP, "LM", "MODIFIERLETTER", 1 << U_MODIFIER_LETTER); addValue(CATEGORY_MAP, "LO", "OTHERLETTER", 1 << U_OTHER_LETTER); addValue(CATEGORY_MAP, "LT", "TITLECASELETTER", 1 << U_TITLECASE_LETTER); addValue(CATEGORY_MAP, "LU", "UPPERCASELETTER", 1 << U_UPPERCASE_LETTER); addValue(CATEGORY_MAP, "M", "MARK", (1 << U_NON_SPACING_MARK) | (1 << U_COMBINING_SPACING_MARK) | (1 << U_ENCLOSING_MARK)); addValue(CATEGORY_MAP, "MN", "NONSPACINGMARK", 1 << U_NON_SPACING_MARK); addValue(CATEGORY_MAP, "MC", "SPACINGMARK", 1 << U_COMBINING_SPACING_MARK); addValue(CATEGORY_MAP, "ME", "ENCLOSINGMARK", 1 << U_ENCLOSING_MARK); addValue(CATEGORY_MAP, "N", "NUMBER", (1 << U_DECIMAL_DIGIT_NUMBER) | (1 << U_LETTER_NUMBER) | (1 << U_OTHER_NUMBER)); addValue(CATEGORY_MAP, "ND", "DECIMALNUMBER", 1 << U_DECIMAL_DIGIT_NUMBER); addValue(CATEGORY_MAP, "NL", "LETTERNUMBER", 1 << U_LETTER_NUMBER); addValue(CATEGORY_MAP, "NO", "OTHERNUMBER", 1 << U_OTHER_NUMBER); addValue(CATEGORY_MAP, "P", "PUNCTUATION", (1 << U_CONNECTOR_PUNCTUATION) | (1 << U_DASH_PUNCTUATION) | (1 << U_END_PUNCTUATION) | (1 << U_FINAL_PUNCTUATION) | (1 << U_INITIAL_PUNCTUATION) | (1 << U_OTHER_PUNCTUATION) | (1 << U_START_PUNCTUATION)); addValue(CATEGORY_MAP, "PC", "CONNECTORPUNCTUATION", 1 << U_CONNECTOR_PUNCTUATION); addValue(CATEGORY_MAP, "PD", "DASHPUNCTUATION", 1 << U_DASH_PUNCTUATION); addValue(CATEGORY_MAP, "PE", "ENDPUNCTUATION", 1 << U_END_PUNCTUATION); addValue(CATEGORY_MAP, "PF", "FINALPUNCTUATION", 1 << U_FINAL_PUNCTUATION); addValue(CATEGORY_MAP, "PI", "INITIALPUNCTUATION", 1 << U_INITIAL_PUNCTUATION); addValue(CATEGORY_MAP, "PO", "OTHERPUNCTUATION", 1 << U_OTHER_PUNCTUATION); addValue(CATEGORY_MAP, "PS", "STARTPUNCTUATION", 1 << U_START_PUNCTUATION); addValue(CATEGORY_MAP, "S", "SYMBOL", (1 << U_CURRENCY_SYMBOL) | (1 << U_MODIFIER_SYMBOL) | (1 << U_MATH_SYMBOL) | (1 << U_OTHER_SYMBOL)); addValue(CATEGORY_MAP, "SC", "CURRENCYSYMBOL", 1 << U_CURRENCY_SYMBOL); addValue(CATEGORY_MAP, "SK", "MODIFIERSYMBOL", 1 << U_MODIFIER_SYMBOL); addValue(CATEGORY_MAP, "SM", "MATHSYMBOL", 1 << U_MATH_SYMBOL); addValue(CATEGORY_MAP, "SO", "OTHERSYMBOL", 1 << U_OTHER_SYMBOL); addValue(CATEGORY_MAP, "Z", "SEPARATOR", (1 << U_LINE_SEPARATOR) | (1 << U_PARAGRAPH_SEPARATOR) | (1 << U_SPACE_SEPARATOR)); addValue(CATEGORY_MAP, "ZL", "LINESEPARATOR", 1 << U_LINE_SEPARATOR); addValue(CATEGORY_MAP, "ZP", "PARAGRAPHSEPARATOR", 1 << U_PARAGRAPH_SEPARATOR); addValue(CATEGORY_MAP, "ZS", "SPACESEPARATOR", 1 << U_SPACE_SEPARATOR); } U_NAMESPACE_END //eof