| /* |
| ******************************************************************************* |
| * |
| * Copyright (C) 2002-2003, International Business Machines |
| * Corporation and others. All Rights Reserved. |
| * |
| ******************************************************************************* |
| * file name: uprops.h |
| * encoding: US-ASCII |
| * tab size: 8 (not used) |
| * indentation:4 |
| * |
| * created on: 2002feb24 |
| * created by: Markus W. Scherer |
| * |
| * Implementations for mostly non-core Unicode character properties |
| * stored in uprops.icu. |
| */ |
| |
| #include "unicode/utypes.h" |
| #include "unicode/uchar.h" |
| #include "unicode/uscript.h" |
| #include "cstring.h" |
| #include "unormimp.h" |
| #include "uprops.h" |
| |
| #define LENGTHOF(array) (int32_t)(sizeof(array)/sizeof((array)[0])) |
| |
| /** |
| * Unicode property names and property value names are compared |
| * "loosely". Property[Value]Aliases.txt say: |
| * "With loose matching of property names, the case distinctions, whitespace, |
| * and '_' are ignored." |
| * |
| * This function does just that, for ASCII (char *) name strings. |
| * It is almost identical to ucnv_compareNames() but also ignores |
| * ASCII White_Space characters (U+0009..U+000d). |
| * |
| * @internal |
| */ |
| U_CAPI int32_t U_EXPORT2 |
| uprv_comparePropertyNames(const char *name1, const char *name2) { |
| int32_t rc; |
| unsigned char c1, c2; |
| |
| for(;;) { |
| /* Ignore delimiters '-', '_', and ASCII White_Space */ |
| while((c1=(unsigned char)*name1)=='-' || c1=='_' || |
| c1==' ' || c1=='\t' || c1=='\n' || c1=='\v' || c1=='\f' || c1=='\r' |
| ) { |
| ++name1; |
| } |
| while((c2=(unsigned char)*name2)=='-' || c2=='_' || |
| c2==' ' || c2=='\t' || c2=='\n' || c2=='\v' || c2=='\f' || c2=='\r' |
| ) { |
| ++name2; |
| } |
| |
| /* If we reach the ends of both strings then they match */ |
| if((c1|c2)==0) { |
| return 0; |
| } |
| |
| /* Case-insensitive comparison */ |
| if(c1!=c2) { |
| rc=(int32_t)(unsigned char)uprv_tolower(c1)-(int32_t)(unsigned char)uprv_tolower(c2); |
| if(rc!=0) { |
| return rc; |
| } |
| } |
| |
| ++name1; |
| ++name2; |
| } |
| } |
| |
| /* API functions ------------------------------------------------------------ */ |
| |
| U_CAPI void U_EXPORT2 |
| u_charAge(UChar32 c, UVersionInfo versionArray) { |
| if(versionArray!=NULL) { |
| uint32_t version=u_getUnicodeProperties(c, 0)>>UPROPS_AGE_SHIFT; |
| versionArray[0]=(uint8_t)(version>>4); |
| versionArray[1]=(uint8_t)(version&0xf); |
| versionArray[2]=versionArray[3]=0; |
| } |
| } |
| |
| U_CAPI UScriptCode U_EXPORT2 |
| uscript_getScript(UChar32 c, UErrorCode *pErrorCode) { |
| if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) { |
| return 0; |
| } |
| if((uint32_t)c>0x10ffff) { |
| *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR; |
| return 0; |
| } |
| |
| return (UScriptCode)(u_getUnicodeProperties(c, 0)&UPROPS_SCRIPT_MASK); |
| } |
| |
| U_CAPI UBlockCode U_EXPORT2 |
| ublock_getCode(UChar32 c) { |
| return (UBlockCode)((u_getUnicodeProperties(c, 0)&UPROPS_BLOCK_MASK)>>UPROPS_BLOCK_SHIFT); |
| } |
| |
| static const struct { |
| int32_t column; |
| uint32_t mask; |
| } binProps[]={ |
| /* |
| * column and mask values for binary properties from u_getUnicodeProperties(). |
| * Must be in order of corresponding UProperty, |
| * and there must be exacly one entry per binary UProperty. |
| */ |
| { 1, U_MASK(UPROPS_ALPHABETIC) }, |
| { 1, U_MASK(UPROPS_ASCII_HEX_DIGIT) }, |
| { 1, U_MASK(UPROPS_BIDI_CONTROL) }, |
| { -1, U_MASK(UPROPS_MIRROR_SHIFT) }, |
| { 1, U_MASK(UPROPS_DASH) }, |
| { 1, U_MASK(UPROPS_DEFAULT_IGNORABLE_CODE_POINT) }, |
| { 1, U_MASK(UPROPS_DEPRECATED) }, |
| { 1, U_MASK(UPROPS_DIACRITIC) }, |
| { 1, U_MASK(UPROPS_EXTENDER) }, |
| { 0, 0 }, /* UCHAR_FULL_COMPOSITION_EXCLUSION */ |
| { 1, U_MASK(UPROPS_GRAPHEME_BASE) }, |
| { 1, U_MASK(UPROPS_GRAPHEME_EXTEND) }, |
| { 1, U_MASK(UPROPS_GRAPHEME_LINK) }, |
| { 1, U_MASK(UPROPS_HEX_DIGIT) }, |
| { 1, U_MASK(UPROPS_HYPHEN) }, |
| { 1, U_MASK(UPROPS_ID_CONTINUE) }, |
| { 1, U_MASK(UPROPS_ID_START) }, |
| { 1, U_MASK(UPROPS_IDEOGRAPHIC) }, |
| { 1, U_MASK(UPROPS_IDS_BINARY_OPERATOR) }, |
| { 1, U_MASK(UPROPS_IDS_TRINARY_OPERATOR) }, |
| { 1, U_MASK(UPROPS_JOIN_CONTROL) }, |
| { 1, U_MASK(UPROPS_LOGICAL_ORDER_EXCEPTION) }, |
| { 1, U_MASK(UPROPS_LOWERCASE) }, |
| { 1, U_MASK(UPROPS_MATH) }, |
| { 1, U_MASK(UPROPS_NONCHARACTER_CODE_POINT) }, |
| { 1, U_MASK(UPROPS_QUOTATION_MARK) }, |
| { 1, U_MASK(UPROPS_RADICAL) }, |
| { 1, U_MASK(UPROPS_SOFT_DOTTED) }, |
| { 1, U_MASK(UPROPS_TERMINAL_PUNCTUATION) }, |
| { 1, U_MASK(UPROPS_UNIFIED_IDEOGRAPH) }, |
| { 1, U_MASK(UPROPS_UPPERCASE) }, |
| { 1, U_MASK(UPROPS_WHITE_SPACE) }, |
| { 1, U_MASK(UPROPS_XID_CONTINUE) }, |
| { 1, U_MASK(UPROPS_XID_START) }, |
| { -1, U_MASK(UPROPS_CASE_SENSITIVE_SHIFT) } |
| }; |
| |
| U_CAPI UBool U_EXPORT2 |
| u_hasBinaryProperty(UChar32 c, UProperty which) { |
| /* c is range-checked in the functions that are called from here */ |
| if(which<UCHAR_BINARY_START || UCHAR_BINARY_LIMIT<=which) { |
| /* not a known binary property */ |
| return FALSE; |
| } else if(which==UCHAR_FULL_COMPOSITION_EXCLUSION) { |
| #if !UCONFIG_NO_NORMALIZATION |
| return unorm_internalIsFullCompositionExclusion(c); |
| #else |
| return FALSE; |
| #endif |
| } else { |
| /* systematic, directly stored properties */ |
| return (u_getUnicodeProperties(c, binProps[which].column)&binProps[which].mask)!=0; |
| } |
| } |
| |
| U_CAPI UBool U_EXPORT2 |
| u_isUAlphabetic(UChar32 c) { |
| return u_hasBinaryProperty(c, UCHAR_ALPHABETIC); |
| } |
| |
| U_CAPI UBool U_EXPORT2 |
| u_isULowercase(UChar32 c) { |
| return u_hasBinaryProperty(c, UCHAR_LOWERCASE); |
| } |
| |
| U_CAPI UBool U_EXPORT2 |
| u_isUUppercase(UChar32 c) { |
| return u_hasBinaryProperty(c, UCHAR_UPPERCASE); |
| } |
| |
| U_CAPI UBool U_EXPORT2 |
| u_isUWhiteSpace(UChar32 c) { |
| return u_hasBinaryProperty(c, UCHAR_WHITE_SPACE); |
| } |
| |
| U_CAPI UBool U_EXPORT2 |
| uprv_isRuleWhiteSpace(UChar32 c) { |
| /* "white space" in the sense of ICU rule parsers: Cf+White_Space */ |
| return |
| u_charType(c)==U_FORMAT_CHAR || |
| u_hasBinaryProperty(c, UCHAR_WHITE_SPACE); |
| } |
| |
| static const UChar _PATTERN[] = { |
| /* "[[:Cf:][:WSpace:]]" */ |
| 91, 91, 58, 67, 102, 58, 93, 91, 58, 87, |
| 83, 112, 97, 99, 101, 58, 93, 93, 0 |
| }; |
| |
| U_CAPI USet* U_EXPORT2 |
| uprv_openRuleWhiteSpaceSet(UErrorCode* ec) { |
| return uset_openPattern(_PATTERN, |
| sizeof(_PATTERN)/sizeof(_PATTERN[0])-1, ec); |
| } |
| |
| U_CAPI int32_t U_EXPORT2 |
| u_getIntPropertyValue(UChar32 c, UProperty which) { |
| UErrorCode errorCode; |
| |
| if(which<UCHAR_BINARY_START) { |
| return 0; /* undefined */ |
| } else if(which<UCHAR_BINARY_LIMIT) { |
| return (int32_t)u_hasBinaryProperty(c, which); |
| } else if(which<UCHAR_INT_START) { |
| return 0; /* undefined */ |
| } else if(which<UCHAR_INT_LIMIT) { |
| switch(which) { |
| case UCHAR_BIDI_CLASS: |
| return (int32_t)u_charDirection(c); |
| case UCHAR_BLOCK: |
| return (int32_t)ublock_getCode(c); |
| case UCHAR_CANONICAL_COMBINING_CLASS: |
| #if !UCONFIG_NO_NORMALIZATION |
| return u_getCombiningClass(c); |
| #else |
| return 0; |
| #endif |
| case UCHAR_DECOMPOSITION_TYPE: |
| return (int32_t)(u_getUnicodeProperties(c, 2)&UPROPS_DT_MASK); |
| case UCHAR_EAST_ASIAN_WIDTH: |
| return (int32_t)(u_getUnicodeProperties(c, 0)&UPROPS_EA_MASK)>>UPROPS_EA_SHIFT; |
| case UCHAR_GENERAL_CATEGORY: |
| return (int32_t)u_charType(c); |
| case UCHAR_JOINING_GROUP: |
| return (int32_t)(u_getUnicodeProperties(c, 2)&UPROPS_JG_MASK)>>UPROPS_JG_SHIFT; |
| case UCHAR_JOINING_TYPE: |
| return (int32_t)(u_getUnicodeProperties(c, 2)&UPROPS_JT_MASK)>>UPROPS_JT_SHIFT; |
| case UCHAR_LINE_BREAK: |
| return (int32_t)(u_getUnicodeProperties(c, 0)&UPROPS_LB_MASK)>>UPROPS_LB_SHIFT; |
| case UCHAR_NUMERIC_TYPE: |
| return (int32_t)GET_NUMERIC_TYPE(u_getUnicodeProperties(c, -1)); |
| case UCHAR_SCRIPT: |
| errorCode=U_ZERO_ERROR; |
| return (int32_t)uscript_getScript(c, &errorCode); |
| case UCHAR_HANGUL_SYLLABLE_TYPE: |
| /* purely algorithmic; hardcode known characters, check for assigned new ones */ |
| if(c<JAMO_L_BASE) { |
| /* U_HST_NOT_APPLICABLE */ |
| } else if(c<=0x11ff) { |
| /* Jamo range */ |
| if(c<=0x115f) { |
| /* Jamo L range, HANGUL CHOSEONG ... */ |
| if(c==0x115f || c<=0x1159 || u_charType(c)==U_OTHER_LETTER) { |
| return U_HST_LEADING_JAMO; |
| } |
| } else if(c<=0x11a7) { |
| /* Jamo V range, HANGUL JUNGSEONG ... */ |
| if(c<=0x11a2 || u_charType(c)==U_OTHER_LETTER) { |
| return U_HST_VOWEL_JAMO; |
| } |
| } else { |
| /* Jamo T range */ |
| if(c<=0x11f9 || u_charType(c)==U_OTHER_LETTER) { |
| return U_HST_TRAILING_JAMO; |
| } |
| } |
| } else if((c-=HANGUL_BASE)<0) { |
| /* U_HST_NOT_APPLICABLE */ |
| } else if(c<HANGUL_COUNT) { |
| /* Hangul syllable */ |
| return c%JAMO_T_COUNT==0 ? U_HST_LV_SYLLABLE : U_HST_LVT_SYLLABLE; |
| } |
| return U_HST_NOT_APPLICABLE; |
| default: |
| return 0; /* undefined */ |
| } |
| } else if(which==UCHAR_GENERAL_CATEGORY_MASK) { |
| return U_MASK(u_charType(c)); |
| } else { |
| return 0; /* undefined */ |
| } |
| } |
| |
| U_CAPI int32_t U_EXPORT2 |
| u_getIntPropertyMinValue(UProperty which) { |
| return 0; /* all binary/enum/int properties have a minimum value of 0 */ |
| } |
| |
| U_CAPI int32_t U_EXPORT2 |
| u_getIntPropertyMaxValue(UProperty which) { |
| int32_t max; |
| |
| if(which<UCHAR_BINARY_START) { |
| return -1; /* undefined */ |
| } else if(which<UCHAR_BINARY_LIMIT) { |
| return 1; /* maximum TRUE for all binary properties */ |
| } else if(which<UCHAR_INT_START) { |
| return -1; /* undefined */ |
| } else if(which<UCHAR_INT_LIMIT) { |
| switch(which) { |
| case UCHAR_BIDI_CLASS: |
| return (int32_t)U_CHAR_DIRECTION_COUNT-1; |
| case UCHAR_BLOCK: |
| max=(uprv_getMaxValues(0)&UPROPS_BLOCK_MASK)>>UPROPS_BLOCK_SHIFT; |
| return max!=0 ? max : (int32_t)UBLOCK_COUNT-1; |
| case UCHAR_CANONICAL_COMBINING_CLASS: |
| return 0xff; /* TODO do we need to be more precise, getting the actual maximum? */ |
| case UCHAR_DECOMPOSITION_TYPE: |
| max=uprv_getMaxValues(2)&UPROPS_DT_MASK; |
| return max!=0 ? max : (int32_t)U_DT_COUNT-1; |
| case UCHAR_EAST_ASIAN_WIDTH: |
| max=(uprv_getMaxValues(0)&UPROPS_EA_MASK)>>UPROPS_EA_SHIFT; |
| return max!=0 ? max : (int32_t)U_EA_COUNT-1; |
| case UCHAR_GENERAL_CATEGORY: |
| return (int32_t)U_CHAR_CATEGORY_COUNT-1; |
| case UCHAR_JOINING_GROUP: |
| max=(uprv_getMaxValues(2)&UPROPS_JG_MASK)>>UPROPS_JG_SHIFT; |
| return max!=0 ? max : (int32_t)U_JG_COUNT-1; |
| case UCHAR_JOINING_TYPE: |
| max=(uprv_getMaxValues(2)&UPROPS_JT_MASK)>>UPROPS_JT_SHIFT; |
| return max!=0 ? max : (int32_t)U_JT_COUNT-1; |
| case UCHAR_LINE_BREAK: |
| max=(uprv_getMaxValues(0)&UPROPS_LB_MASK)>>UPROPS_LB_SHIFT; |
| return max!=0 ? max : (int32_t)U_LB_COUNT-1; |
| case UCHAR_NUMERIC_TYPE: |
| return (int32_t)U_NT_COUNT-1; |
| case UCHAR_SCRIPT: |
| max=uprv_getMaxValues(0)&UPROPS_SCRIPT_MASK; |
| return max!=0 ? max : (int32_t)USCRIPT_CODE_LIMIT-1; |
| case UCHAR_HANGUL_SYLLABLE_TYPE: |
| return (int32_t)U_HST_COUNT-1; |
| default: |
| return -1; /* undefined */ |
| } |
| } else { |
| return -1; /* undefined */ |
| } |
| } |
| |
| /*---------------------------------------------------------------- |
| * Inclusions list |
| *----------------------------------------------------------------*/ |
| |
| /* |
| * Return a set of characters for property enumeration. |
| * The set implicitly contains 0x110000 as well, which is one more than the highest |
| * Unicode code point. |
| * |
| * This set is used as an ordered list - its code points are ordered, and |
| * consecutive code points (in Unicode code point order) in the set define a range. |
| * For each two consecutive characters (start, limit) in the set, |
| * all of the UCD/normalization and related properties for |
| * all code points start..limit-1 are all the same, |
| * except for character names and ISO comments. |
| * |
| * All Unicode code points U+0000..U+10ffff are covered by these ranges. |
| * The ranges define a partition of the Unicode code space. |
| * ICU uses the inclusions set to enumerate properties for generating |
| * UnicodeSets containing all code points that have a certain property value. |
| * |
| * The Inclusion List is generated from the UCD. It is generated |
| * by enumerating the data tries, and code points for hardcoded properties |
| * are added as well. |
| * |
| * -------------------------------------------------------------------------- |
| * |
| * The following are ideas for getting properties-unique code point ranges, |
| * with possible optimizations beyond the current implementation. |
| * These optimizations would require more code and be more fragile. |
| * The current implementation generates one single list (set) for all properties. |
| * |
| * To enumerate properties efficiently, one needs to know ranges of |
| * repetitive values, so that the value of only each start code point |
| * can be applied to the whole range. |
| * This information is in principle available in the uprops.icu/unorm.icu data. |
| * |
| * There are two obstacles: |
| * |
| * 1. Some properties are computed from multiple data structures, |
| * making it necessary to get repetitive ranges by intersecting |
| * ranges from multiple tries. |
| * |
| * 2. It is not economical to write code for getting repetitive ranges |
| * that are precise for each of some 50 properties. |
| * |
| * Compromise ideas: |
| * |
| * - Get ranges per trie, not per individual property. |
| * Each range contains the same values for a whole group of properties. |
| * This would generate currently five range sets, two for uprops.icu tries |
| * and three for unorm.icu tries. |
| * |
| * - Combine sets of ranges for multiple tries to get sufficient sets |
| * for properties, e.g., the uprops.icu main and auxiliary tries |
| * for all non-normalization properties. |
| * |
| * Ideas for representing ranges and combining them: |
| * |
| * - A UnicodeSet could hold just the start code points of ranges. |
| * Multiple sets are easily combined by or-ing them together. |
| * |
| * - Alternatively, a UnicodeSet could hold each even-numbered range. |
| * All ranges could be enumerated by using each start code point |
| * (for the even-numbered ranges) as well as each limit (end+1) code point |
| * (for the odd-numbered ranges). |
| * It should be possible to combine two such sets by xor-ing them, |
| * but no more than two. |
| * |
| * The second way to represent ranges may(?!) yield smaller UnicodeSet arrays, |
| * but the first one is certainly simpler and applicable for combining more than |
| * two range sets. |
| * |
| * It is possible to combine all range sets for all uprops/unorm tries into one |
| * set that can be used for all properties. |
| * As an optimization, there could be less-combined range sets for certain |
| * groups of properties. |
| * The relationship of which less-combined range set to use for which property |
| * depends on the implementation of the properties and must be hardcoded |
| * - somewhat error-prone and higher maintenance but can be tested easily |
| * by building property sets "the simple way" in test code. |
| * |
| * --- |
| * |
| * Do not use a UnicodeSet pattern because that causes infinite recursion; |
| * UnicodeSet depends on the inclusions set. |
| */ |
| U_CAPI void U_EXPORT2 |
| uprv_getInclusions(USet* set, UErrorCode *pErrorCode) { |
| if(pErrorCode==NULL || U_FAILURE(*pErrorCode)) { |
| return; |
| } |
| |
| uset_clear(set); |
| |
| #if !UCONFIG_NO_NORMALIZATION |
| unorm_addPropertyStarts(set, pErrorCode); |
| #endif |
| uchar_addPropertyStarts(set, pErrorCode); |
| } |