/* ******************************************************************************* * * Copyright (C) 2001, International Business Machines * Corporation and others. All Rights Reserved. * ******************************************************************************* * file name: ucol_tok.cpp * encoding: US-ASCII * tab size: 8 (not used) * indentation:4 * * created 02/22/2001 * created by: Vladimir Weinstein * * This module reads a tailoring rule string and produces a list of * tokens that will be turned into collation elements * */ #include "unicode/ustring.h" #include "unicode/uchar.h" #include "cmemory.h" #include "ucol_tok.h" const UChar *rulesToParse; void ucol_tok_initTokenList(UColTokenParser *src, const UChar *rules, const uint32_t rulesLength, UCollator *UCA, UErrorCode *status) { uint32_t nSize = 0; uint32_t estimatedSize = (2*rulesLength+UCOL_TOK_EXTRA_RULE_SPACE_SIZE); if(U_FAILURE(*status)) { return; } src->source = (UChar *)uprv_malloc(estimatedSize*sizeof(UChar)); nSize = unorm_normalize(rules, rulesLength, UNORM_NFD, 0, src->source, estimatedSize, status); if(nSize > estimatedSize || *status == U_BUFFER_OVERFLOW_ERROR) { *status = U_ZERO_ERROR; src->source = (UChar *)realloc(src->source, (nSize+UCOL_TOK_EXTRA_RULE_SPACE_SIZE)*sizeof(UChar)); nSize = unorm_normalize(rules, rulesLength, UNORM_NFD, 0, src->source, nSize+UCOL_TOK_EXTRA_RULE_SPACE_SIZE, status); } src->current = src->source; src->end = src->source+nSize; src->sourceCurrent = src->source; src->extraCurrent = src->end; src->extraEnd = src->source+estimatedSize; //src->end+UCOL_TOK_EXTRA_RULE_SPACE_SIZE; src->UCA = UCA; src->invUCA = ucol_initInverseUCA(status); src->resultLen = 0; src->lh = 0; src->varTop = NULL; src->tailored = uhash_open(uhash_hashTokens, uhash_compareTokens, status); if(U_FAILURE(*status)) { return; } uhash_setValueDeleter(src->tailored, deleteToken); src->opts = (UColOptionSet *)uprv_malloc(sizeof(UColOptionSet)); uprv_memcpy(src->opts, UCA->options, sizeof(UColOptionSet)); rulesToParse = src->source; src->lh = (UColTokListHeader *)uprv_malloc(512*sizeof(UColTokListHeader)); src->resultLen = 0; } inline void syntaxError( const UChar* rules, int32_t pos, int32_t rulesLen, UParseError* parseError){ parseError->offset = pos; parseError->line = 0 ; /* we are not using line numbers */ // for pre-context int32_t start = (pos <=U_PARSE_CONTEXT_LEN)? 0 : (pos - (U_PARSE_CONTEXT_LEN-1)); int32_t stop = pos; u_memcpy(parseError->preContext,rules+start,stop-start); //null terminate the buffer parseError->preContext[stop-start] = 0; //for post-context start = pos+1; stop = ((pos+U_PARSE_CONTEXT_LEN)<= rulesLen )? (pos+(U_PARSE_CONTEXT_LEN-1)) : u_strlen(rules); u_memcpy(parseError->postContext,rules+start,stop-start); //null terminate the buffer parseError->postContext[stop-start]= 0; } void ucol_uprv_tok_setOptionInImage(UColOptionSet *opts, UColAttribute attrib, UColAttributeValue value) { switch(attrib) { case UCOL_HIRAGANA_QUATERNARY_MODE: opts->hiraganaQ = value; break; case UCOL_FRENCH_COLLATION: opts->frenchCollation = value; break; case UCOL_ALTERNATE_HANDLING: opts->alternateHandling = value; break; case UCOL_CASE_FIRST: opts->caseFirst = value; break; case UCOL_CASE_LEVEL: opts->caseLevel = value; break; case UCOL_NORMALIZATION_MODE: opts->normalizationMode = value; break; case UCOL_STRENGTH: opts->strength = value; break; case UCOL_ATTRIBUTE_COUNT: default: break; } } #define UTOK_OPTION_COUNT 15 static UBool didInit = FALSE; /* we can be strict, or we can be lenient */ /* I'd surely be lenient with the option arguments */ /* maybe even with options */ U_STRING_DECL(suboption_00, "non-ignorable", 13); U_STRING_DECL(suboption_01, "shifted", 7); U_STRING_DECL(suboption_02, "lower", 5); U_STRING_DECL(suboption_03, "upper", 5); U_STRING_DECL(suboption_04, "off", 3); U_STRING_DECL(suboption_05, "on", 2); U_STRING_DECL(suboption_06, "1", 1); U_STRING_DECL(suboption_07, "2", 1); U_STRING_DECL(suboption_08, "3", 1); U_STRING_DECL(suboption_09, "4", 1); U_STRING_DECL(suboption_10, "I", 1); U_STRING_DECL(option_00, "undefined", 9); U_STRING_DECL(option_01, "rearrange", 9); U_STRING_DECL(option_02, "alternate", 9); U_STRING_DECL(option_03, "backwards", 9); U_STRING_DECL(option_04, "variable top", 12); U_STRING_DECL(option_05, "top", 3); U_STRING_DECL(option_06, "normalization", 13); U_STRING_DECL(option_07, "caseLevel", 9); U_STRING_DECL(option_08, "caseFirst", 9); U_STRING_DECL(option_09, "scriptOrder", 11); U_STRING_DECL(option_10, "charsetname", 11); U_STRING_DECL(option_11, "charset", 7); U_STRING_DECL(option_12, "before", 6); U_STRING_DECL(option_13, "hiraganaQ", 9); U_STRING_DECL(option_14, "strength", 8); static const ucolTokSuboption alternateSub[2] = { {suboption_00, 13, UCOL_NON_IGNORABLE}, {suboption_01, 7, UCOL_SHIFTED} }; static const ucolTokSuboption caseFirstSub[3] = { {suboption_02, 5, UCOL_LOWER_FIRST}, {suboption_03, 5, UCOL_UPPER_FIRST}, {suboption_04, 3, UCOL_OFF}, }; static const ucolTokSuboption onOffSub[2] = { {suboption_04, 3, UCOL_OFF}, {suboption_05, 2, UCOL_ON} }; static const ucolTokSuboption frenchSub[1] = { {suboption_07, 1, UCOL_ON} }; static const ucolTokSuboption beforeSub[3] = { {suboption_06, 1, UCOL_PRIMARY}, {suboption_07, 1, UCOL_SECONDARY}, {suboption_08, 1, UCOL_TERTIARY} }; static const ucolTokSuboption strengthSub[5] = { {suboption_06, 1, UCOL_PRIMARY}, {suboption_07, 1, UCOL_SECONDARY}, {suboption_08, 1, UCOL_TERTIARY}, {suboption_09, 1, UCOL_QUATERNARY}, {suboption_10, 1, UCOL_IDENTICAL}, }; static const ucolTokOption rulesOptions[UTOK_OPTION_COUNT] = { {option_02, 9, alternateSub, 2, UCOL_ALTERNATE_HANDLING}, /*"alternate" */ {option_03, 9, frenchSub, 1, UCOL_FRENCH_COLLATION}, /*"backwards" */ {option_07, 9, onOffSub, 2, UCOL_CASE_LEVEL}, /*"caseLevel" */ {option_08, 9, caseFirstSub, 3, UCOL_CASE_FIRST}, /*"caseFirst" */ {option_06, 13, onOffSub, 2, UCOL_NORMALIZATION_MODE}, /*"normalization" */ {option_13, 9, onOffSub, 2, UCOL_HIRAGANA_QUATERNARY_MODE}, /*"hiraganaQ" */ {option_14, 8, strengthSub, 5, UCOL_STRENGTH}, /*"strength" */ {option_04, 12, NULL, 0, UCOL_ATTRIBUTE_COUNT}, /*"variable top" */ {option_01, 9, NULL, 0, UCOL_ATTRIBUTE_COUNT}, /*"rearrange" */ {option_05, 3, NULL, 0, UCOL_ATTRIBUTE_COUNT}, /*"top" */ {option_12, 6, beforeSub, 3, UCOL_ATTRIBUTE_COUNT}, /*"before" */ {option_00, 9, NULL, 0, UCOL_ATTRIBUTE_COUNT}, /*"undefined" */ {option_09, 11, NULL, 0, UCOL_ATTRIBUTE_COUNT}, /*"scriptOrder" */ {option_10, 11, NULL, 0, UCOL_ATTRIBUTE_COUNT}, /*"charsetname" */ {option_11, 7, NULL, 0, UCOL_ATTRIBUTE_COUNT} /*"charset" */ }; int32_t u_strncmpNoCase(const UChar *s1, const UChar *s2, int32_t n) { if(n > 0) { int32_t rc; for(;;) { rc = (int32_t)u_tolower(*s1) - (int32_t)u_tolower(*s2); if(rc != 0 || *s1 == 0 || --n == 0) { return rc; } ++s1; ++s2; } } return 0; } uint8_t ucol_uprv_tok_readAndSetOption(UColOptionSet *opts, const UChar* start, const UChar *end, UErrorCode *status) { uint32_t i = 0; int32_t j=0; UBool foundOption = FALSE; const UChar *optionArg = NULL; if(!didInit) { U_STRING_INIT(suboption_00, "non-ignorable", 13); U_STRING_INIT(suboption_01, "shifted", 7); U_STRING_INIT(suboption_02, "lower", 5); U_STRING_INIT(suboption_03, "upper", 5); U_STRING_INIT(suboption_04, "off", 3); U_STRING_INIT(suboption_05, "on", 2); U_STRING_INIT(suboption_06, "1", 1); U_STRING_INIT(suboption_07, "2", 1); U_STRING_INIT(suboption_08, "3", 1); U_STRING_INIT(suboption_09, "4", 1); U_STRING_INIT(suboption_10, "I", 1); U_STRING_INIT(option_00, "undefined", 9); U_STRING_INIT(option_01, "rearrange", 9); U_STRING_INIT(option_02, "alternate", 9); U_STRING_INIT(option_03, "backwards", 9); U_STRING_INIT(option_04, "variable top", 12); U_STRING_INIT(option_05, "top", 3); U_STRING_INIT(option_06, "normalization", 13); U_STRING_INIT(option_07, "caseLevel", 9); U_STRING_INIT(option_08, "caseFirst", 9); U_STRING_INIT(option_09, "scriptOrder", 11); U_STRING_INIT(option_10, "charsetname", 11); U_STRING_INIT(option_11, "charset", 7); U_STRING_INIT(option_12, "before", 6); U_STRING_INIT(option_13, "hiraganaQ", 9); U_STRING_INIT(option_14, "strength", 8); } start++; /*skip opening '['*/ while(i < UTOK_OPTION_COUNT) { if(u_strncmpNoCase(start, rulesOptions[i].optionName, rulesOptions[i].optionLen) == 0) { foundOption = TRUE; if(end - start > rulesOptions[i].optionLen) { optionArg = start+rulesOptions[i].optionLen+1; /* start of the options, skip space */ while(u_isWhitespace(*optionArg)) { /* eat whitespace */ optionArg++; } } break; } i++; } if(!foundOption) { *status = U_ILLEGAL_ARGUMENT_ERROR; return FALSE; } if(i<7) { if(optionArg) { for(j = 0; jcurrent < src->end) { UChar ch = *(src->current); if (inQuote) { if (ch == 0x0027/*'\''*/) { inQuote = FALSE; } else { if ((newCharsLen == 0) || inChars) { if(newCharsLen == 0) { charsOffset = src->extraCurrent - src->source; } newCharsLen++; } else { if(newExtensionLen == 0) { extensionOffset = src->extraCurrent - src->source; } newExtensionLen++; } } } else { /* Sets the strength for this entry */ switch (ch) { case 0x003D/*'='*/ : if (newStrength != UCOL_TOK_UNSET) { goto EndOfLoop; } /* if we start with strength, we'll reset to top */ if(startOfRules == TRUE) { top = TRUE; newStrength = UCOL_TOK_RESET; goto EndOfLoop; } newStrength = UCOL_IDENTICAL; break; case 0x002C/*','*/: if (newStrength != UCOL_TOK_UNSET) { goto EndOfLoop; } /* if we start with strength, we'll reset to top */ if(startOfRules == TRUE) { top = TRUE; newStrength = UCOL_TOK_RESET; goto EndOfLoop; } newStrength = UCOL_TERTIARY; break; case 0x003B/*';'*/: if (newStrength != UCOL_TOK_UNSET) { goto EndOfLoop; } /* if we start with strength, we'll reset to top */ if(startOfRules == TRUE) { top = TRUE; newStrength = UCOL_TOK_RESET; goto EndOfLoop; } newStrength = UCOL_SECONDARY; break; case 0x003C/*'<'*/: if (newStrength != UCOL_TOK_UNSET) { goto EndOfLoop; } /* if we start with strength, we'll reset to top */ if(startOfRules == TRUE) { top = TRUE; newStrength = UCOL_TOK_RESET; goto EndOfLoop; } /* before this, do a scan to verify whether this is */ /* another strength */ if(*(src->current+1) == 0x003C) { src->current++; if(*(src->current+1) == 0x003C) { src->current++; /* three in a row! */ newStrength = UCOL_TERTIARY; } else { /* two in a row */ newStrength = UCOL_SECONDARY; } } else { /* just one */ newStrength = UCOL_PRIMARY; } break; case 0x0026/*'&'*/: if (newStrength != UCOL_TOK_UNSET) { /**/ goto EndOfLoop; } newStrength = UCOL_TOK_RESET; /* PatternEntry::RESET = 0 */ break; case 0x005b/*'['*/: /* options - read an option, analyze it */ if((optionEnd = u_strchr(src->current, 0x005d /*']'*/)) != NULL) { uint8_t result = ucol_uprv_tok_readAndSetOption(src->opts, src->current, optionEnd, status); src->current = optionEnd; if(U_SUCCESS(*status)) { if(result & UCOL_TOK_TOP) { if(newStrength == UCOL_TOK_RESET) { top = TRUE; src->current++; goto EndOfLoop; } else { *status = U_INVALID_FORMAT_ERROR; } } else if(result & UCOL_TOK_VARIABLE_TOP) { if(newStrength != UCOL_TOK_RESET && newStrength != UCOL_TOK_UNSET) { variableTop = TRUE; charsOffset = src->extraCurrent - src->source; newCharsLen = 1; *src->extraCurrent++ = 0xFFFF; src->current++; goto EndOfLoop; } else { *status = U_INVALID_FORMAT_ERROR; syntaxError(src->source,(src->current-src->source),(src->end-src->source),parseError); } } else if (result & UCOL_TOK_BEFORE){ if(newStrength == UCOL_TOK_RESET) { before = result & UCOL_TOK_BEFORE; } else { *status = U_INVALID_FORMAT_ERROR; syntaxError(src->source,(src->current-src->source),(src->end-src->source),parseError); } } } else { syntaxError(src->source,(src->current-src->source),(src->end-src->source),parseError); return NULL; } } break; /* Ignore the white spaces */ case 0x0009/*'\t'*/: case 0x000C/*'\f'*/: case 0x000D/*'\r'*/: case 0x000A/*'\n'*/: case 0x0020/*' '*/: break; /* skip whitespace TODO use Unicode */ case 0x002F/*'/'*/: wasInQuote = FALSE; /* if we were copying source characters, we want to stop now */ inChars = FALSE; /* we're now processing expansion */ break; /* found a quote, we're gonna start copying */ case 0x0027/*'\''*/: if (newStrength == UCOL_TOK_UNSET) { /* quote is illegal until we have a strength */ *status = U_INVALID_FORMAT_ERROR; syntaxError(src->source,(src->current-src->source),(src->end-src->source),parseError); return NULL; } inQuote = TRUE; if(inChars) { /* we're doing characters */ if(wasInQuote == FALSE) { charsOffset = src->extraCurrent - src->source; } if (newCharsLen != 0) { uprv_memcpy(src->extraCurrent, src->current - newCharsLen, newCharsLen*sizeof(UChar)); src->extraCurrent += newCharsLen; } newCharsLen++; } else { /* we're doing an expansion */ if(wasInQuote == FALSE) { extensionOffset = src->extraCurrent - src->source; } if (newExtensionLen != 0) { uprv_memcpy(src->extraCurrent, src->current - newExtensionLen, newExtensionLen*sizeof(UChar)); src->extraCurrent += newExtensionLen; } newExtensionLen++; } wasInQuote = TRUE; ch = *(++(src->current)); if(ch == 0x0027) { /* copy the double quote */ *src->extraCurrent++ = ch; inQuote = FALSE; } break; /* '@' is french only if the strength is not currently set */ /* if it is, it's just a regular character in collation rules */ case 0x0040/*'@'*/: if (newStrength == UCOL_TOK_UNSET) { src->opts->frenchCollation = UCOL_ON; break; } case 0x007C /*|*/: /* this means we have actually been reading prefix part */ // we want to store read characters to the prefix part and continue reading // the characters (proper way would be to restart reading the chars, but in // that case we would have to complicate the token hasher, which I do not // intend to play with. Instead, we will do prefixes when prefixes are due // (before adding the elements). *prefixOffset = charsOffset; *prefixLen = newCharsLen; if(inChars) { /* we're doing characters */ if(wasInQuote == FALSE) { charsOffset = src->extraCurrent - src->source; } if (newCharsLen != 0) { uprv_memcpy(src->extraCurrent, src->current - newCharsLen, newCharsLen*sizeof(UChar)); src->extraCurrent += newCharsLen; } newCharsLen++; } wasInQuote = TRUE; ch = *(++(src->current)); break; //charsOffset = 0; //newCharsLen = 0; //break; // We want to store the whole prefix/character sequence. If we break // the '|' is going to get lost. default: if (newStrength == UCOL_TOK_UNSET) { *status = U_INVALID_FORMAT_ERROR; syntaxError(src->source,(src->current-src->source),(src->end-src->source),parseError); return NULL; } if (ucol_tok_isSpecialChar(ch) && (inQuote == FALSE)) { *status = U_INVALID_FORMAT_ERROR; syntaxError(src->source,(src->current-src->source),(src->end-src->source),parseError); return NULL; } if(ch == 0x0000 && src->current+1 == src->end) { break; } if (inChars) { if(newCharsLen == 0) { charsOffset = src->current - src->source; } newCharsLen++; } else { if(newExtensionLen == 0) { extensionOffset = src->current - src->source; } newExtensionLen++; } break; } } if(wasInQuote) { if(ch != 0x27) { *src->extraCurrent++ = ch; } if(src->extraCurrent > src->extraEnd) { /* reallocate */ UChar *newSrc = (UChar *)uprv_realloc(src->source, (src->extraEnd-src->source)*2*sizeof(UChar)); if(newSrc != NULL) { src->current = newSrc + (src->current - src->source); src->extraCurrent = newSrc + (src->extraCurrent - src->source); src->end = newSrc + (src->end - src->source); src->extraEnd = newSrc + (src->extraEnd-src->source)*2; src->sourceCurrent = newSrc + (src->sourceCurrent-src->source); src->source = newSrc; } else { *status = U_MEMORY_ALLOCATION_ERROR; return NULL; } } } src->current++; } EndOfLoop: wasInQuote = FALSE; if (newStrength == UCOL_TOK_UNSET) { return NULL; } if (newCharsLen == 0 && top == FALSE) { syntaxError(src->source,(src->current-src->source),(src->end-src->source),parseError); *status = U_INVALID_FORMAT_ERROR; return NULL; } *strength = newStrength; *chOffset = charsOffset; *chLen = newCharsLen; *exOffset = extensionOffset; *exLen = newExtensionLen; *specs = (UCOL_TOK_VARIABLE_TOP * (variableTop?1:0)) | (UCOL_TOK_TOP * (top?1:0)) | before; return src->current; } inline UColToken *getVirginBefore(UColTokenParser *src, UColToken *sourceToken, uint32_t strength, uint32_t *charsOffset, uint32_t *newCharsLen, UErrorCode *status) { if(U_FAILURE(*status)) { return NULL; } /* this is a virgin before - we need to fish the anchor from the UCA */ collIterate s; uint32_t baseCE = UCOL_NOT_FOUND, baseContCE = UCOL_NOT_FOUND; uint32_t CE, SecondCE; uint32_t invPos; if(sourceToken != NULL) { init_collIterate(src->UCA, src->source+((sourceToken->source)&0xFFFFFF), 1, &s); } else { init_collIterate(src->UCA, src->source+*charsOffset, 1, &s); } baseCE = ucol_getNextCE(src->UCA, &s, status) & 0xFFFFFF3F; baseContCE = ucol_getNextCE(src->UCA, &s, status); if(baseContCE == UCOL_NO_MORE_CES) { baseContCE = 0; } invPos = ucol_inv_getPrevCE(baseCE, baseContCE, &CE, &SecondCE, strength); uint32_t *CETable = (uint32_t *)((uint8_t *)src->invUCA+src->invUCA->table); uint32_t ch = CETable[3*invPos+2]; if((ch & UCOL_INV_SIZEMASK) != 0) { uint16_t *conts = (uint16_t *)((uint8_t *)src->invUCA+src->invUCA->conts); uint32_t offset = (ch & UCOL_INV_OFFSETMASK); ch = conts[offset]; } *src->extraCurrent++ = (UChar)ch; *charsOffset = src->extraCurrent - src->source - 1; *newCharsLen = 1; // We got an UCA before. However, this might have been tailored. // example: // &\u30ca = \u306a // &[before 3]\u306a<<<\u306a|\u309d uint32_t key = (*newCharsLen << 24) | *charsOffset; sourceToken = (UColToken *)uhash_iget(src->tailored, (int32_t)key); return sourceToken; // if we found a tailored thing, we have to get one further down the line //if(sourceToken != NULL && sourceToken->strength != UCOL_TOK_RESET) { //src->extraCurrent--; //getVirginBefore(src, sourceToken, strength, charsOffset, newCharsLen, status); //} } /* Processing Description 1 Build a ListList. Each list has a header, which contains two lists (positive and negative), a reset token, a baseCE, nextCE, and previousCE. The lists and reset may be null. 2 As you process, you keep a LAST pointer that points to the last token you handled. */ uint32_t ucol_tok_assembleTokenList(UColTokenParser *src, UParseError *parseError,UErrorCode *status) { UColToken *lastToken = NULL; const UChar *parseEnd = NULL; uint32_t expandNext = 0; UBool variableTop = FALSE; UBool top = FALSE; uint8_t specs = 0; UColTokListHeader *ListList = NULL; uint32_t newCharsLen = 0, charsOffset = 0; uint32_t newExtensionsLen = 0, extensionOffset = 0; uint32_t prefixLen = 0, prefixOffset = 0; uint32_t newStrength = UCOL_TOK_UNSET; UHashtable *uchars2tokens = src->tailored; ListList = src->lh; while(src->current < src->end) { prefixOffset = 0; prefixLen = 0; parseEnd = ucol_tok_parseNextToken(src, &newStrength, &charsOffset, &newCharsLen, &extensionOffset, &newExtensionsLen, &prefixOffset, &prefixLen, &specs, (UBool)(lastToken == NULL), parseError, status); variableTop = ((specs & UCOL_TOK_VARIABLE_TOP) != 0); top = ((specs & UCOL_TOK_TOP) != 0); if(U_SUCCESS(*status) && parseEnd != NULL) { UColToken *sourceToken = NULL; uint32_t key = 0; uint32_t lastStrength = UCOL_TOK_UNSET; if(lastToken != NULL ) { lastStrength = lastToken->strength; } key = newCharsLen << 24 | charsOffset; /* 4 Lookup each source in the CharsToToken map, and find a sourceToken */ sourceToken = (UColToken *)uhash_iget(uchars2tokens, (int32_t)key); if(newStrength != UCOL_TOK_RESET) { if(lastToken == NULL) { /* this means that rules haven't started properly */ *status = U_INVALID_FORMAT_ERROR; syntaxError(src->source,0,(src->end-src->source),parseError); return 0; } /* 6 Otherwise (when relation != reset) */ if(sourceToken == NULL) { /* If sourceToken is null, create new one, */ sourceToken = (UColToken *)uprv_malloc(sizeof(UColToken)); sourceToken->source = newCharsLen << 24 | charsOffset; sourceToken->debugSource = *(src->source + charsOffset); sourceToken->prefix = prefixLen << 24 | prefixOffset; sourceToken->debugPrefix = *(src->source + prefixOffset); sourceToken->polarity = UCOL_TOK_POLARITY_POSITIVE; /* TODO: this should also handle reverse */ sourceToken->next = NULL; sourceToken->previous = NULL; sourceToken->noOfCEs = 0; sourceToken->noOfExpCEs = 0; uhash_iput(uchars2tokens, (int32_t)sourceToken->source, sourceToken, status); } else { /* we could have fished out a reset here */ if(sourceToken->strength != UCOL_TOK_RESET && lastToken != sourceToken) { /* otherwise remove sourceToken from where it was. */ if(sourceToken->next != NULL) { if(sourceToken->next->strength > sourceToken->strength) { sourceToken->next->strength = sourceToken->strength; } sourceToken->next->previous = sourceToken->previous; } else { sourceToken->listHeader->last = sourceToken->previous; } if(sourceToken->previous != NULL) { sourceToken->previous->next = sourceToken->next; } else { sourceToken->listHeader->first = sourceToken->next; } sourceToken->next = NULL; sourceToken->previous = NULL; } } sourceToken->strength = newStrength; sourceToken->listHeader = lastToken->listHeader; /* 1. Find the strongest strength in each list, and set strongestP and strongestN accordingly in the headers. */ if(lastStrength == UCOL_TOK_RESET || sourceToken->listHeader->first == 0) { /* If LAST is a reset insert sourceToken in the list. */ if(sourceToken->listHeader->first == 0) { sourceToken->listHeader->first = sourceToken; sourceToken->listHeader->last = sourceToken; } else { /* we need to find a place for us */ /* and we'll get in front of the same strength */ if(sourceToken->listHeader->first->strength <= sourceToken->strength) { sourceToken->next = sourceToken->listHeader->first; sourceToken->next->previous = sourceToken; sourceToken->listHeader->first = sourceToken; sourceToken->previous = NULL; } else { lastToken = sourceToken->listHeader->first; while(lastToken->next != NULL && lastToken->next->strength > sourceToken->strength) { lastToken = lastToken->next; } if(lastToken->next != NULL) { lastToken->next->previous = sourceToken; } else { sourceToken->listHeader->last = sourceToken; } sourceToken->previous = lastToken; sourceToken->next = lastToken->next; lastToken->next = sourceToken; } } } else { /* Otherwise (when LAST is not a reset) if polarity (LAST) == polarity(relation), insert sourceToken after LAST, otherwise insert before. when inserting after or before, search to the next position with the same strength in that direction. (This is called postpone insertion). */ if(sourceToken != lastToken) { if(lastToken->polarity == sourceToken->polarity) { while(lastToken->next != NULL && lastToken->next->strength > sourceToken->strength) { lastToken = lastToken->next; } sourceToken->previous = lastToken; if(lastToken->next != NULL) { lastToken->next->previous = sourceToken; } else { sourceToken->listHeader->last = sourceToken; } sourceToken->next = lastToken->next; lastToken->next = sourceToken; } else { while(lastToken->previous != NULL && lastToken->previous->strength > sourceToken->strength) { lastToken = lastToken->previous; } sourceToken->next = lastToken; if(lastToken->previous != NULL) { lastToken->previous->next = sourceToken; } else { sourceToken->listHeader->first = sourceToken; } sourceToken->previous = lastToken->previous; lastToken->previous = sourceToken; } } else { /* repeated one thing twice in rules, stay with the stronger strength */ if(lastStrength < sourceToken->strength) { sourceToken->strength = lastStrength; } } } /* if the token was a variable top, we're gonna put it in */ if(variableTop == TRUE && src->varTop == NULL) { variableTop = FALSE; src->varTop = sourceToken; } // Treat the expansions. // There are two types of expansions: explicit (x / y) and reset based propagating expansions // (&abc * d * e <=> &ab * d / c * e / c) // if both of them are in effect for a token, they are combined. sourceToken->expansion = newExtensionsLen << 24 | extensionOffset; if(expandNext != 0) { if(sourceToken->strength == UCOL_PRIMARY) { /* primary strength kills off the implicit expansion */ expandNext = 0; } else if(sourceToken->expansion == 0) { /* if there is no expansion, implicit is just added to the token */ sourceToken->expansion = expandNext; } else { /* there is both explicit and implicit expansion. We need to make a combination */ memcpy(src->extraCurrent, src->source + (expandNext & 0xFFFFFF), (expandNext >> 24)*sizeof(UChar)); memcpy(src->extraCurrent+(expandNext >> 24), src->source + extensionOffset, newExtensionsLen*sizeof(UChar)); sourceToken->expansion = ((expandNext >> 24) + newExtensionsLen)<<24 | (src->extraCurrent - src->source); src->extraCurrent += (expandNext >> 24) + newExtensionsLen; } } // This is just for debugging purposes if(sourceToken->expansion != 0) { sourceToken->debugExpansion = *(src->source + extensionOffset); } else { sourceToken->debugExpansion = 0; } } else { if(sourceToken == NULL) { /* this is a reset, but it might still be somewhere in the tailoring, in shorter form */ uint32_t searchCharsLen = newCharsLen; while(searchCharsLen > 1 && sourceToken == NULL) { searchCharsLen--; key = searchCharsLen << 24 | charsOffset; sourceToken = (UColToken *)uhash_iget(uchars2tokens, (int32_t)key); } if(sourceToken != NULL) { expandNext = (newCharsLen - searchCharsLen) << 24 | (charsOffset + searchCharsLen); } } uint32_t CE = UCOL_NOT_FOUND, SecondCE = UCOL_NOT_FOUND; collIterate s; if((specs & UCOL_TOK_BEFORE) != 0) { /* we're doing before */ uint8_t strength = (specs & UCOL_TOK_BEFORE) - 1; if(sourceToken != NULL && sourceToken->strength != UCOL_TOK_RESET) { /* this is a before that is already ordered in the UCA - so we need to get the previous with good strength */ while(sourceToken->strength > strength && sourceToken->previous != NULL) { sourceToken = sourceToken->previous; } /* here, either we hit the strength or NULL */ if(sourceToken->strength == strength) { if(sourceToken->previous != NULL) { sourceToken = sourceToken->previous; } else { /* start of list */ sourceToken = sourceToken->listHeader->reset; } } else { /* we hit NULL */ /* we should be doing the else part */ sourceToken = sourceToken->listHeader->reset; sourceToken = getVirginBefore(src, sourceToken, strength, &charsOffset, &newCharsLen, status); //sourceToken = NULL; } } else { sourceToken = getVirginBefore(src, sourceToken, strength, &charsOffset, &newCharsLen, status); //sourceToken = NULL; } } if(lastToken != NULL && lastStrength == UCOL_TOK_RESET) { /* if the previous token was also a reset, */ /*this means that we have two consecutive resets */ /* and we want to remove the previous one if empty*/ if(ListList[src->resultLen-1].first == NULL) { src->resultLen--; } } /* 5 If the relation is a reset: If sourceToken is null Create new list, create new sourceToken, make the baseCE from source, put the sourceToken in ListHeader of the new list */ if(sourceToken == NULL) { /* do the reset thing */ sourceToken = (UColToken *)uprv_malloc(sizeof(UColToken)); sourceToken->source = newCharsLen << 24 | charsOffset; sourceToken->expansion = newExtensionsLen << 24 | extensionOffset; sourceToken->debugSource = *(src->source + charsOffset); sourceToken->debugExpansion = *(src->source + extensionOffset); if(prefixOffset != 0) { // this is a syntax error *status = U_INVALID_FORMAT_ERROR; syntaxError(src->source,charsOffset-1,charsOffset+newCharsLen,parseError); return 0; } else { sourceToken->prefix = 0; } sourceToken->polarity = UCOL_TOK_POLARITY_POSITIVE; /* TODO: this should also handle reverse */ sourceToken->strength = UCOL_TOK_RESET; sourceToken->next = NULL; sourceToken->previous = NULL; sourceToken->noOfCEs = 0; sourceToken->noOfExpCEs = 0; sourceToken->listHeader = &ListList[src->resultLen]; /* 3 Consider each item: relation, source, and expansion: e.g. ...< x / y ... First convert all expansions into normal form. Examples: If "xy" doesn't occur earlier in the list or in the UCA, convert &xy * c * d * ... into &x * c/y * d * ... Note: reset values can never have expansions, although they can cause the very next item to have one. They may be contractions, if they are found earlier in the list. */ if(top == FALSE) { uint32_t resetCharsOffset; init_collIterate(src->UCA, src->source+charsOffset, newCharsLen, &s); CE = ucol_getNextCE(src->UCA, &s, status); resetCharsOffset = s.pos - src->source; SecondCE = ucol_getNextCE(src->UCA, &s, status); ListList[src->resultLen].baseCE = CE & 0xFFFFFF3F; if(isContinuation(SecondCE)) { ListList[src->resultLen].baseContCE = SecondCE; } else { ListList[src->resultLen].baseContCE = 0; } if(newCharsLen > 1) { sourceToken->source = ((resetCharsOffset - charsOffset ) << 24) | charsOffset; expandNext = ((newCharsLen + charsOffset - resetCharsOffset)<<24) | (resetCharsOffset); } else { expandNext = 0; } } else { /* top == TRUE */ top = FALSE; ListList[src->resultLen].baseCE = UCOL_RESET_TOP_VALUE; ListList[src->resultLen].baseContCE = 0; } ListList[src->resultLen].first = NULL; ListList[src->resultLen].last = NULL; ListList[src->resultLen].first = NULL; ListList[src->resultLen].last = NULL; ListList[src->resultLen].reset = sourceToken; src->resultLen++; uhash_iput(uchars2tokens, (int32_t)sourceToken->source, sourceToken, status); } else { /* reset to something already in rules */ top = FALSE; } } /* 7 After all this, set LAST to point to sourceToken, and goto step 3. */ lastToken = sourceToken; } else { return 0; } } if(src->resultLen > 0 && ListList[src->resultLen-1].first == NULL) { src->resultLen--; } return src->resultLen; } void ucol_tok_closeTokenList(UColTokenParser *src) { if(src->tailored != NULL) { uhash_close(src->tailored); } if(src->lh != NULL) { uprv_free(src->lh); } if(src->source != NULL) { uprv_free(src->source); } if(src->opts != NULL) { uprv_free(src->opts); } } int32_t uhash_hashTokens(const UHashTok k) { int32_t hash = 0; uint32_t key = (uint32_t)k.integer; if (key != 0) { int32_t len = (key & 0xFF000000)>>24; int32_t inc = ((len - 32) / 32) + 1; const UChar *p = (key & 0x00FFFFFF) + rulesToParse; const UChar *limit = p + len; while (p> 24); uint32_t s2L = ((p2 & 0xFF000000) >> 24); const UChar *end = s1+s1L-1; if (p1 == p2) { return TRUE; } if (p1 == 0 || p2 == 0) { return FALSE; } if(s1L != s2L) { return FALSE; } if(p1 == p2) { return TRUE; } while((s1 < end) && *s1 == *s2) { ++s1; ++s2; } if(*s1 == *s2) { return TRUE; } else { return FALSE; } } void deleteToken(void *token) { UColToken *tok = (UColToken *)token; uprv_free(tok); }