2001-01-31 07:20:56 +00:00
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#include "unicode/ustring.h"
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#include "cmemory.h"
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2001-01-29 22:09:24 +00:00
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#include "ucoltok.h"
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#include "uhash.h"
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2001-01-31 07:20:56 +00:00
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#include "ucmp32.h"
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2001-01-29 22:09:24 +00:00
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static UHashtable *uchars2tokens;
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2001-01-31 07:20:56 +00:00
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static UColTokListHeader ListList[256];
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static uint32_t listPosition = 0;
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static const UChar *rulesToParse = 0;
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/* will use a small structure, tokHash */
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U_CAPI int32_t
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uhash_hashTokens(const void *k) {
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int32_t hash = 0;
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if (k != NULL) {
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const UColToken *key = (const UColToken *)k;
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int32_t len = (key->source & 0xFF000000)>>24;
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int32_t inc = ((len - 32) / 32) + 1;
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const UChar *p = (key->source & 0x00FFFFFF) + rulesToParse;
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const UChar *limit = p + len;
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while (p<limit) {
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hash = (hash * 37) + *p;
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p += inc;
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}
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if((len = ((key->expansion & 0xFF000000)>>24)) != 0) {
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p = (key->expansion & 0x00FFFFFF) + rulesToParse;
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limit = p + len;
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while (p<limit) {
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hash = (hash * 37) + *p;
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p += inc;
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}
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}
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}
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return hash;
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}
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U_CAPI UBool
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uhash_compareTokens(const void *key1, const void *key2) {
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const UColToken *p1 = (const UColToken*) key1;
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const UColToken *p2 = (const UColToken*) key2;
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const UChar *s1 = (p1->source & 0x00FFFFFF) + rulesToParse;
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const UChar *s2 = (p2->source & 0x00FFFFFF) + rulesToParse;
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uint32_t s1L = ((p1->source & 0xFF000000) >> 24);
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uint32_t s2L = ((p2->source & 0xFF000000) >> 24);
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if (p1 == p2) {
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return TRUE;
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}
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if (p1 == NULL || p2 == NULL) {
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return FALSE;
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}
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if(p1->source == p2->source && p1->expansion == p2->expansion) {
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return TRUE;
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}
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if(s1L != s2L) {
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return FALSE;
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}
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while(s1 < s1+s1L-1 && *s1 == *s2) {
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++s1;
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++s2;
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}
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if(*s1 == *s2) {
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s1 = (p1->expansion & 0x00FFFFFF) + rulesToParse;
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s2 = (p2->expansion & 0x00FFFFFF) + rulesToParse;
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s1L = ((p1->expansion & 0xFF000000) >> 24);
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s2L = ((p2->expansion & 0xFF000000) >> 24);
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if(s1L != s2L) {
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return FALSE;
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}
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if(s1L != 0) {
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while(s1 < s1+s1L-1 && *s1 == *s2) {
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++s1;
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++s2;
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}
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return (UBool)(*s1 == *s2);
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} else {
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return TRUE;
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}
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} else {
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return FALSE;
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}
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}
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2001-01-29 22:09:24 +00:00
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void deleteElement(void *element) {
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/*
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UCAElements *el = (UCAElements *)element;
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int32_t i = 0;
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for(i = 0; i < el->noOfCEs; i++) {
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free(el->primary[i]);
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free(el->secondary[i]);
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free(el->tertiary[i]);
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}
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free(el);
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*/
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}
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2001-01-31 07:20:56 +00:00
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void ucol_tok_initTokenList(UColTokenParser *src, UErrorCode *status) {
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2001-01-29 22:09:24 +00:00
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if(U_FAILURE(*status)) {
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return;
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}
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2001-01-31 07:20:56 +00:00
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rulesToParse = src->source;
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uchars2tokens = uhash_open(uhash_hashTokens, uhash_compareTokens, status);
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2001-01-29 22:09:24 +00:00
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uhash_setValueDeleter(uchars2tokens, deleteElement);
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}
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UColToken *ucol_tok_open() {
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return NULL;
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}
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2001-01-31 07:20:56 +00:00
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#define UCOL_TOK_UNSET 0xFFFFFFFF
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#define UCOL_TOK_RESET 0xDEADBEEF
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2001-01-29 22:09:24 +00:00
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/*
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Processing Description
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1 Build a ListList. Each list has a header, which contains two lists (positive
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and negative), a reset token, a baseCE, nextCE, and previousCE. The lists and
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reset may be null.
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2 As you process, you keep a LAST pointer that points to the last token you
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handled.
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2001-01-31 07:20:56 +00:00
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*/
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2001-01-29 22:09:24 +00:00
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2001-01-31 07:20:56 +00:00
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uint32_t ucol_tok_assembleTokenList(UColTokenParser *src, UErrorCode *status) {
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UColToken *lastToken = NULL;
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2001-01-31 20:17:12 +00:00
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uint32_t newCharsLen = 0, newExtensionsLen = 0;
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uint32_t charsOffset = 0, extensionOffset = 0;
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2001-01-31 23:12:37 +00:00
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uint32_t expandNext = 0;
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2001-01-31 20:17:12 +00:00
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uint32_t newStrength = UCOL_TOK_UNSET;
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2001-01-31 07:20:56 +00:00
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ucol_tok_initTokenList(src, status);
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while(src->current < src->end) {
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{ /* parsing part */
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UBool inChars = TRUE;
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UBool inQuote = FALSE;
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2001-01-31 21:10:55 +00:00
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newStrength = UCOL_TOK_UNSET;
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newCharsLen = 0; newExtensionsLen = 0;
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charsOffset = 0; extensionOffset = 0;
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2001-01-31 07:20:56 +00:00
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while (src->current < src->end) {
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UChar ch = *(src->current);
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if (inQuote) {
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if (ch == 0x0027/*'\''*/) {
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inQuote = FALSE;
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} else {
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if ((newCharsLen == 0) || inChars) {
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2001-01-31 20:17:12 +00:00
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if(newCharsLen == 0) {
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charsOffset = src->current - src->source;
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}
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2001-01-31 07:20:56 +00:00
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newCharsLen++;
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} else {
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2001-01-31 20:17:12 +00:00
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if(newExtensionsLen == 0) {
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extensionOffset = src->current - src->source;
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}
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2001-01-31 07:20:56 +00:00
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newExtensionsLen++;
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}
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}
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} else {
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2001-01-31 20:17:12 +00:00
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/* Sets the strength for this entry */
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2001-01-31 07:20:56 +00:00
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switch (ch) {
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case 0x003D/*'='*/ :
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if (newStrength != -1) {
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goto EndOfLoop;
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}
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newStrength = UCOL_IDENTICAL;
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break;
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case 0x002C/*','*/:
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if (newStrength != UCOL_TOK_UNSET) {
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goto EndOfLoop;
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}
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newStrength = UCOL_TERTIARY;
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break;
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case 0x003B/*';'*/:
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if (newStrength != UCOL_TOK_UNSET) {
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goto EndOfLoop;
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}
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newStrength = UCOL_SECONDARY;
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break;
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case 0x003C/*'<'*/:
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if (newStrength != UCOL_TOK_UNSET) {
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goto EndOfLoop;
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}
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newStrength = UCOL_PRIMARY;
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break;
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case 0x0026/*'&'*/:
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if (newStrength != UCOL_TOK_UNSET) {
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goto EndOfLoop;
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}
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newStrength = UCOL_TOK_RESET; /* PatternEntry::RESET = 0 */
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break;
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2001-01-31 20:17:12 +00:00
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/* Ignore the white spaces */
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2001-01-31 07:20:56 +00:00
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case 0x0009/*'\t'*/:
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case 0x000C/*'\f'*/:
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case 0x000D/*'\r'*/:
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case 0x000A/*'\n'*/:
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case 0x0020/*' '*/:
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2001-01-31 20:17:12 +00:00
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break; /* skip whitespace TODO use Unicode */
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2001-01-31 07:20:56 +00:00
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case 0x002F/*'/'*/:
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2001-01-31 20:17:12 +00:00
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/* This entry has an extension. */
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2001-01-31 07:20:56 +00:00
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inChars = FALSE;
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break;
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case 0x0027/*'\''*/:
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inQuote = TRUE;
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ch = *(++(src->current)); /*pattern[++index]; */
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if (newCharsLen == 0) {
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2001-01-31 20:17:12 +00:00
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charsOffset = src->current - src->source;
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2001-01-31 07:20:56 +00:00
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newCharsLen++;
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} else if (inChars) {
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2001-01-31 21:10:55 +00:00
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if(newCharsLen == 0) {
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charsOffset = src->current - src->source;
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}
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2001-01-31 07:20:56 +00:00
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newCharsLen++;
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} else {
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newExtensionsLen++;
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}
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break;
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default:
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if (newStrength == UCOL_TOK_UNSET) {
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*status = U_INVALID_FORMAT_ERROR;
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return 0;
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}
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if (ucol_tok_isSpecialChar(ch) && (inQuote == FALSE)) {
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*status = U_INVALID_FORMAT_ERROR;
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return 0;
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}
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if (inChars) {
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2001-01-31 20:17:12 +00:00
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if(newCharsLen == 0) {
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charsOffset = src->current - src->source;
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}
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2001-01-31 07:20:56 +00:00
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newCharsLen++;
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} else {
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2001-01-31 20:17:12 +00:00
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if(newExtensionsLen == 0) {
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extensionOffset = src->current - src->source;
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}
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2001-01-31 07:20:56 +00:00
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newExtensionsLen++;
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}
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break;
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}
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}
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src->current++;
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}
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EndOfLoop:
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if (newStrength == -1) {
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return 0;
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}
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if (newCharsLen == 0) {
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*status = U_INVALID_FORMAT_ERROR;
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return 0;
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}
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}
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{
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UColToken *sourceToken = NULL;
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UColToken key;
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key.source = newCharsLen << 24 | charsOffset;
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key.expansion = newExtensionsLen << 24 | extensionOffset;
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/* 4 Lookup each [source, expansion] in the CharsToToken map, and find a sourceToken */
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sourceToken = (UColToken *)uhash_get(uchars2tokens, &key);
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2001-01-31 21:10:55 +00:00
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2001-01-31 07:20:56 +00:00
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if(newStrength != UCOL_TOK_RESET) {
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2001-01-31 20:17:12 +00:00
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if(lastToken == NULL) { /* this means that rules haven't started properly */
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*status = U_INVALID_FORMAT_ERROR;
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return 0;
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}
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2001-01-31 07:20:56 +00:00
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/* 6 Otherwise (when relation != reset) */
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if(sourceToken == NULL) {
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/* If sourceToken is null, create new one, */
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sourceToken = (UColToken *)uprv_malloc(sizeof(UColToken));
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sourceToken->source = newCharsLen << 24 | charsOffset;
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sourceToken->expansion = newExtensionsLen << 24 | extensionOffset;
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2001-01-31 21:10:55 +00:00
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sourceToken->debugSource = *(src->source + charsOffset);
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2001-01-31 23:12:37 +00:00
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if(newExtensionsLen > 0) {
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sourceToken->debugExpansion = *(src->source + extensionOffset);
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} else {
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sourceToken->debugExpansion = 0;
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}
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2001-01-31 21:10:55 +00:00
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2001-01-31 23:12:37 +00:00
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sourceToken->polarity = UCOL_TOK_POLARITY_POSITIVE; /* TODO: this should also handle reverse */
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2001-01-31 07:20:56 +00:00
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sourceToken->next = NULL;
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sourceToken->previous = NULL;
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uhash_put(uchars2tokens, sourceToken, sourceToken, status);
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} else {
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/* we could have fished out a reset here */
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if(sourceToken->strength != UCOL_TOK_RESET) {
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/* otherwise remove sourceToken from where it was. */
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if(sourceToken->next != NULL) {
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sourceToken->next->previous = sourceToken->previous;
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} else {
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sourceToken->listHeader->last[sourceToken->polarity] = sourceToken->previous;
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}
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if(sourceToken->previous != NULL) {
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sourceToken->previous->next = sourceToken->next;
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} else {
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sourceToken->listHeader->first[sourceToken->polarity] = sourceToken->next;
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}
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}
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}
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sourceToken->strength = newStrength;
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2001-01-31 23:12:37 +00:00
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sourceToken->listHeader = lastToken->listHeader;
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/*
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1. Find the strongest strength in each list, and set strongestP and strongestN
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accordingly in the headers.
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*/
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if(sourceToken->listHeader->strongest[sourceToken->polarity] > sourceToken->strength) {
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sourceToken->listHeader->strongest[sourceToken->polarity] = sourceToken->strength;
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}
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2001-01-31 07:20:56 +00:00
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if(lastToken->strength == UCOL_TOK_RESET) {
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/* If LAST is a reset
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insert sourceToken at the head of either the positive list or the negative
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list, depending on the polarity of relation.
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set the polarity of sourceToken to be the same as the list you put it in. */
|
2001-01-31 23:12:37 +00:00
|
|
|
if(sourceToken->listHeader->first[sourceToken->polarity] == 0) {
|
|
|
|
sourceToken->listHeader->first[sourceToken->polarity] = sourceToken;
|
|
|
|
sourceToken->listHeader->last[sourceToken->polarity] = sourceToken;
|
|
|
|
} else {
|
|
|
|
sourceToken->listHeader->first[sourceToken->polarity]->previous = sourceToken;
|
|
|
|
sourceToken->next = sourceToken->listHeader->first[sourceToken->polarity];
|
|
|
|
sourceToken->listHeader->first[sourceToken->polarity] = sourceToken;
|
|
|
|
}
|
|
|
|
|
2001-01-31 20:17:12 +00:00
|
|
|
/*
|
|
|
|
If "xy" doesn't occur earlier in the list or in the UCA, convert &xy * c *
|
|
|
|
d * ... into &x * c/y * d * ...
|
|
|
|
*/
|
2001-01-31 23:12:37 +00:00
|
|
|
if(expandNext != 0 && sourceToken->expansion == 0) {
|
|
|
|
sourceToken->expansion = expandNext;
|
|
|
|
sourceToken->debugExpansion = *(src->source + (expandNext & 0xFFFFFF));
|
|
|
|
expandNext = 0;
|
2001-01-31 20:17:12 +00:00
|
|
|
}
|
|
|
|
|
2001-01-31 07:20:56 +00:00
|
|
|
} 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(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->polarity] = 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->polarity] = sourceToken;
|
|
|
|
}
|
|
|
|
sourceToken->previous = lastToken->previous;
|
|
|
|
lastToken->previous = sourceToken;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
} else {
|
2001-01-31 21:10:55 +00:00
|
|
|
uint32_t CE = UCOL_NOT_FOUND, SecondCE = UCOL_NOT_FOUND;
|
|
|
|
collIterate s;
|
|
|
|
|
2001-01-31 23:12:37 +00:00
|
|
|
if(newCharsLen > 1) {
|
|
|
|
expandNext = ((newCharsLen-1)<<24) | (charsOffset + 1);
|
|
|
|
} else {
|
|
|
|
expandNext = 0;
|
|
|
|
}
|
|
|
|
|
2001-01-31 07:20:56 +00:00
|
|
|
/* 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) {
|
2001-02-05 05:36:12 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
3. The rule for "& abcdefg < xyz" is a bit tricky. What it turns into is:
|
|
|
|
|
|
|
|
a. Find the longest sequence in "abcdefg" that is in UCA *OR* in the
|
|
|
|
tailoring so far. Suppose that is "abcd".
|
|
|
|
b. Then treat this rule as equivalent to:
|
|
|
|
"& abcd < xyz / efg"
|
|
|
|
*/
|
2001-01-31 21:10:55 +00:00
|
|
|
if(newCharsLen > 1) {
|
|
|
|
key.source = 0x01000000 | charsOffset;
|
|
|
|
sourceToken = (UColToken *)uhash_get(uchars2tokens, &key);
|
|
|
|
if(sourceToken != NULL) {
|
|
|
|
lastToken = sourceToken;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
}
|
2001-01-31 07:20:56 +00:00
|
|
|
/* do the reset thing */
|
|
|
|
sourceToken = (UColToken *)uprv_malloc(sizeof(UColToken));
|
|
|
|
sourceToken->source = newCharsLen << 24 | charsOffset;
|
|
|
|
sourceToken->expansion = newExtensionsLen << 24 | extensionOffset;
|
2001-01-31 21:10:55 +00:00
|
|
|
|
|
|
|
sourceToken->debugSource = *(src->source + charsOffset);
|
|
|
|
sourceToken->debugExpansion = *(src->source + extensionOffset);
|
|
|
|
|
|
|
|
|
2001-01-31 23:12:37 +00:00
|
|
|
sourceToken->polarity = UCOL_TOK_POLARITY_POSITIVE; /* TODO: this should also handle reverse */
|
2001-01-31 07:20:56 +00:00
|
|
|
sourceToken->strength = UCOL_TOK_RESET;
|
|
|
|
sourceToken->next = NULL;
|
|
|
|
sourceToken->previous = NULL;
|
|
|
|
sourceToken->listHeader = &ListList[listPosition];
|
2001-01-31 20:17:12 +00:00
|
|
|
/*
|
|
|
|
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(newCharsLen > 1) {
|
2001-01-31 23:12:37 +00:00
|
|
|
sourceToken->source = 0x01000000 | charsOffset;
|
|
|
|
}
|
2001-01-31 20:17:12 +00:00
|
|
|
|
2001-01-31 07:20:56 +00:00
|
|
|
|
|
|
|
init_collIterate(src->source+charsOffset, newCharsLen, &s, FALSE);
|
|
|
|
|
|
|
|
CE = ucol_getNextCE(src->UCA, &s, status);
|
|
|
|
/*UCOL_GETNEXTCE(CE, src->UCA, s, &status);*/
|
|
|
|
|
|
|
|
SecondCE = ucol_getNextCE(src->UCA, &s, status);
|
|
|
|
/*UCOL_GETNEXTCE(SecondCE, src->UCA, s, &status);*/
|
|
|
|
|
|
|
|
ListList[listPosition].baseCE = CE;
|
2001-01-31 23:12:37 +00:00
|
|
|
ListList[listPosition].first[UCOL_TOK_POLARITY_NEGATIVE] = NULL;
|
|
|
|
ListList[listPosition].last[UCOL_TOK_POLARITY_NEGATIVE] = NULL;
|
|
|
|
ListList[listPosition].first[UCOL_TOK_POLARITY_POSITIVE] = NULL;
|
|
|
|
ListList[listPosition].last[UCOL_TOK_POLARITY_POSITIVE] = NULL;
|
|
|
|
ListList[listPosition].strongest[UCOL_TOK_POLARITY_NEGATIVE] = UCOL_TOK_UNSET;
|
|
|
|
ListList[listPosition].strongest[UCOL_TOK_POLARITY_POSITIVE] = UCOL_TOK_UNSET;
|
2001-01-31 07:20:56 +00:00
|
|
|
|
|
|
|
ListList[listPosition].reset = sourceToken;
|
|
|
|
|
|
|
|
listPosition++;
|
|
|
|
uhash_put(uchars2tokens, sourceToken, sourceToken, status);
|
|
|
|
} else { /* reset to something already in rules */
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/* 7 After all this, set LAST to point to sourceToken, and goto step 3. */
|
|
|
|
lastToken = sourceToken;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
src->lh = ListList;
|
2001-02-05 05:36:12 +00:00
|
|
|
src->resultLen = listPosition;
|
2001-01-31 07:20:56 +00:00
|
|
|
|
|
|
|
return listPosition;
|
2001-01-29 22:09:24 +00:00
|
|
|
}
|
|
|
|
|