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622 lines
19 KiB
622 lines
19 KiB
// © 2016 and later: Unicode, Inc. and others.
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// License & terms of use: http://www.unicode.org/copyright.html
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/*
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*******************************************************************************
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* Copyright (C) 1996-2015, International Business Machines
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* Corporation and others. All Rights Reserved.
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*******************************************************************************
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* file name: ucol.cpp
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* encoding: UTF-8
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* tab size: 8 (not used)
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* indentation:4
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*
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* Modification history
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* Date Name Comments
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* 1996-1999 various members of ICU team maintained C API for collation framework
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* 02/16/2001 synwee Added internal method getPrevSpecialCE
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* 03/01/2001 synwee Added maxexpansion functionality.
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* 03/16/2001 weiv Collation framework is rewritten in C and made UCA compliant
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* 2012-2014 markus Rewritten in C++ again.
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*/
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#include "unicode/utypes.h"
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#if !UCONFIG_NO_COLLATION
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#include "unicode/coll.h"
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#include "unicode/tblcoll.h"
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#include "unicode/bytestream.h"
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#include "unicode/coleitr.h"
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#include "unicode/ucoleitr.h"
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#include "unicode/ustring.h"
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#include "cmemory.h"
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#include "collation.h"
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#include "cstring.h"
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#include "putilimp.h"
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#include "uassert.h"
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#include "utracimp.h"
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U_NAMESPACE_USE
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U_CAPI UCollator* U_EXPORT2
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ucol_openBinary(const uint8_t *bin, int32_t length,
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const UCollator *base,
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UErrorCode *status)
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{
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if(U_FAILURE(*status)) { return NULL; }
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RuleBasedCollator *coll = new RuleBasedCollator(
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bin, length,
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RuleBasedCollator::rbcFromUCollator(base),
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*status);
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if(coll == NULL) {
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*status = U_MEMORY_ALLOCATION_ERROR;
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return NULL;
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}
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if(U_FAILURE(*status)) {
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delete coll;
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return NULL;
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}
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return coll->toUCollator();
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}
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U_CAPI int32_t U_EXPORT2
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ucol_cloneBinary(const UCollator *coll,
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uint8_t *buffer, int32_t capacity,
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UErrorCode *status)
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{
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if(U_FAILURE(*status)) {
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return 0;
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}
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const RuleBasedCollator *rbc = RuleBasedCollator::rbcFromUCollator(coll);
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if(rbc == NULL && coll != NULL) {
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*status = U_UNSUPPORTED_ERROR;
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return 0;
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}
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return rbc->cloneBinary(buffer, capacity, *status);
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}
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U_CAPI UCollator* U_EXPORT2
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ucol_safeClone(const UCollator *coll, void * /*stackBuffer*/, int32_t * pBufferSize, UErrorCode *status)
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{
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if (status == NULL || U_FAILURE(*status)){
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return NULL;
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}
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if (coll == NULL) {
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*status = U_ILLEGAL_ARGUMENT_ERROR;
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return NULL;
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}
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if (pBufferSize != NULL) {
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int32_t inputSize = *pBufferSize;
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*pBufferSize = 1;
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if (inputSize == 0) {
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return NULL; // preflighting for deprecated functionality
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}
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}
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Collator *newColl = Collator::fromUCollator(coll)->clone();
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if (newColl == NULL) {
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*status = U_MEMORY_ALLOCATION_ERROR;
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return nullptr;
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} else {
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*status = U_SAFECLONE_ALLOCATED_WARNING;
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}
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return newColl->toUCollator();
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}
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U_CAPI void U_EXPORT2
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ucol_close(UCollator *coll)
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{
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UTRACE_ENTRY_OC(UTRACE_UCOL_CLOSE);
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UTRACE_DATA1(UTRACE_INFO, "coll = %p", coll);
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if(coll != NULL) {
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delete Collator::fromUCollator(coll);
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}
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UTRACE_EXIT();
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}
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U_CAPI int32_t U_EXPORT2
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ucol_mergeSortkeys(const uint8_t *src1, int32_t src1Length,
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const uint8_t *src2, int32_t src2Length,
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uint8_t *dest, int32_t destCapacity) {
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/* check arguments */
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if( src1==NULL || src1Length<-1 || src1Length==0 || (src1Length>0 && src1[src1Length-1]!=0) ||
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src2==NULL || src2Length<-1 || src2Length==0 || (src2Length>0 && src2[src2Length-1]!=0) ||
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destCapacity<0 || (destCapacity>0 && dest==NULL)
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) {
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/* error, attempt to write a zero byte and return 0 */
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if(dest!=NULL && destCapacity>0) {
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*dest=0;
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}
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return 0;
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}
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/* check lengths and capacity */
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if(src1Length<0) {
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src1Length=(int32_t)uprv_strlen((const char *)src1)+1;
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}
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if(src2Length<0) {
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src2Length=(int32_t)uprv_strlen((const char *)src2)+1;
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}
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int32_t destLength=src1Length+src2Length;
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if(destLength>destCapacity) {
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/* the merged sort key does not fit into the destination */
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return destLength;
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}
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/* merge the sort keys with the same number of levels */
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uint8_t *p=dest;
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for(;;) {
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/* copy level from src1 not including 00 or 01 */
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uint8_t b;
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while((b=*src1)>=2) {
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++src1;
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*p++=b;
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}
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/* add a 02 merge separator */
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*p++=2;
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/* copy level from src2 not including 00 or 01 */
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while((b=*src2)>=2) {
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++src2;
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*p++=b;
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}
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/* if both sort keys have another level, then add a 01 level separator and continue */
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if(*src1==1 && *src2==1) {
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++src1;
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++src2;
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*p++=1;
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} else {
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break;
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}
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}
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/*
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* here, at least one sort key is finished now, but the other one
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* might have some contents left from containing more levels;
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* that contents is just appended to the result
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*/
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if(*src1!=0) {
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/* src1 is not finished, therefore *src2==0, and src1 is appended */
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src2=src1;
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}
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/* append src2, "the other, unfinished sort key" */
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while((*p++=*src2++)!=0) {}
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/* the actual length might be less than destLength if either sort key contained illegally embedded zero bytes */
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return (int32_t)(p-dest);
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}
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U_CAPI int32_t U_EXPORT2
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ucol_getSortKey(const UCollator *coll,
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const UChar *source,
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int32_t sourceLength,
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uint8_t *result,
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int32_t resultLength)
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{
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UTRACE_ENTRY(UTRACE_UCOL_GET_SORTKEY);
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if (UTRACE_LEVEL(UTRACE_VERBOSE)) {
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UTRACE_DATA3(UTRACE_VERBOSE, "coll=%p, source string = %vh ", coll, source,
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((sourceLength==-1 && source!=NULL) ? u_strlen(source) : sourceLength));
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}
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int32_t keySize = Collator::fromUCollator(coll)->
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getSortKey(source, sourceLength, result, resultLength);
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UTRACE_DATA2(UTRACE_VERBOSE, "Sort Key = %vb", result, keySize);
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UTRACE_EXIT_VALUE(keySize);
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return keySize;
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}
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U_CAPI int32_t U_EXPORT2
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ucol_nextSortKeyPart(const UCollator *coll,
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UCharIterator *iter,
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uint32_t state[2],
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uint8_t *dest, int32_t count,
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UErrorCode *status)
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{
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/* error checking */
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if(status==NULL || U_FAILURE(*status)) {
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return 0;
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}
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UTRACE_ENTRY(UTRACE_UCOL_NEXTSORTKEYPART);
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UTRACE_DATA6(UTRACE_VERBOSE, "coll=%p, iter=%p, state=%d %d, dest=%p, count=%d",
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coll, iter, state[0], state[1], dest, count);
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int32_t i = Collator::fromUCollator(coll)->
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internalNextSortKeyPart(iter, state, dest, count, *status);
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// Return number of meaningful sortkey bytes.
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UTRACE_DATA4(UTRACE_VERBOSE, "dest = %vb, state=%d %d",
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dest,i, state[0], state[1]);
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UTRACE_EXIT_VALUE_STATUS(i, *status);
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return i;
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}
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/**
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* Produce a bound for a given sortkey and a number of levels.
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*/
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U_CAPI int32_t U_EXPORT2
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ucol_getBound(const uint8_t *source,
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int32_t sourceLength,
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UColBoundMode boundType,
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uint32_t noOfLevels,
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uint8_t *result,
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int32_t resultLength,
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UErrorCode *status)
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{
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// consistency checks
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if(status == NULL || U_FAILURE(*status)) {
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return 0;
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}
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if(source == NULL) {
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*status = U_ILLEGAL_ARGUMENT_ERROR;
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return 0;
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}
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int32_t sourceIndex = 0;
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// Scan the string until we skip enough of the key OR reach the end of the key
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do {
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sourceIndex++;
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if(source[sourceIndex] == Collation::LEVEL_SEPARATOR_BYTE) {
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noOfLevels--;
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}
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} while (noOfLevels > 0
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&& (source[sourceIndex] != 0 || sourceIndex < sourceLength));
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if((source[sourceIndex] == 0 || sourceIndex == sourceLength)
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&& noOfLevels > 0) {
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*status = U_SORT_KEY_TOO_SHORT_WARNING;
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}
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// READ ME: this code assumes that the values for boundType
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// enum will not changes. They are set so that the enum value
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// corresponds to the number of extra bytes each bound type
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// needs.
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if(result != NULL && resultLength >= sourceIndex+boundType) {
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uprv_memcpy(result, source, sourceIndex);
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switch(boundType) {
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// Lower bound just gets terminated. No extra bytes
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case UCOL_BOUND_LOWER: // = 0
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break;
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// Upper bound needs one extra byte
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case UCOL_BOUND_UPPER: // = 1
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result[sourceIndex++] = 2;
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break;
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// Upper long bound needs two extra bytes
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case UCOL_BOUND_UPPER_LONG: // = 2
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result[sourceIndex++] = 0xFF;
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result[sourceIndex++] = 0xFF;
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break;
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default:
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*status = U_ILLEGAL_ARGUMENT_ERROR;
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return 0;
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}
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result[sourceIndex++] = 0;
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return sourceIndex;
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} else {
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return sourceIndex+boundType+1;
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}
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}
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U_CAPI void U_EXPORT2
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ucol_setMaxVariable(UCollator *coll, UColReorderCode group, UErrorCode *pErrorCode) {
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if(U_FAILURE(*pErrorCode)) { return; }
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Collator::fromUCollator(coll)->setMaxVariable(group, *pErrorCode);
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}
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U_CAPI UColReorderCode U_EXPORT2
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ucol_getMaxVariable(const UCollator *coll) {
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return Collator::fromUCollator(coll)->getMaxVariable();
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}
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U_CAPI uint32_t U_EXPORT2
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ucol_setVariableTop(UCollator *coll, const UChar *varTop, int32_t len, UErrorCode *status) {
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if(U_FAILURE(*status) || coll == NULL) {
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return 0;
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}
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return Collator::fromUCollator(coll)->setVariableTop(varTop, len, *status);
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}
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U_CAPI uint32_t U_EXPORT2 ucol_getVariableTop(const UCollator *coll, UErrorCode *status) {
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if(U_FAILURE(*status) || coll == NULL) {
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return 0;
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}
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return Collator::fromUCollator(coll)->getVariableTop(*status);
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}
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U_CAPI void U_EXPORT2
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ucol_restoreVariableTop(UCollator *coll, const uint32_t varTop, UErrorCode *status) {
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if(U_FAILURE(*status) || coll == NULL) {
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return;
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}
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Collator::fromUCollator(coll)->setVariableTop(varTop, *status);
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}
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U_CAPI void U_EXPORT2
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ucol_setAttribute(UCollator *coll, UColAttribute attr, UColAttributeValue value, UErrorCode *status) {
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if(U_FAILURE(*status) || coll == NULL) {
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return;
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}
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Collator::fromUCollator(coll)->setAttribute(attr, value, *status);
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}
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U_CAPI UColAttributeValue U_EXPORT2
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ucol_getAttribute(const UCollator *coll, UColAttribute attr, UErrorCode *status) {
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if(U_FAILURE(*status) || coll == NULL) {
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return UCOL_DEFAULT;
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}
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return Collator::fromUCollator(coll)->getAttribute(attr, *status);
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}
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U_CAPI void U_EXPORT2
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ucol_setStrength( UCollator *coll,
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UCollationStrength strength)
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{
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UErrorCode status = U_ZERO_ERROR;
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ucol_setAttribute(coll, UCOL_STRENGTH, strength, &status);
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}
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U_CAPI UCollationStrength U_EXPORT2
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ucol_getStrength(const UCollator *coll)
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{
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UErrorCode status = U_ZERO_ERROR;
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return ucol_getAttribute(coll, UCOL_STRENGTH, &status);
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}
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U_CAPI int32_t U_EXPORT2
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ucol_getReorderCodes(const UCollator *coll,
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int32_t *dest,
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int32_t destCapacity,
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UErrorCode *status) {
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if (U_FAILURE(*status)) {
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return 0;
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}
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return Collator::fromUCollator(coll)->getReorderCodes(dest, destCapacity, *status);
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}
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U_CAPI void U_EXPORT2
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ucol_setReorderCodes(UCollator* coll,
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const int32_t* reorderCodes,
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int32_t reorderCodesLength,
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UErrorCode *status) {
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if (U_FAILURE(*status)) {
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return;
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}
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Collator::fromUCollator(coll)->setReorderCodes(reorderCodes, reorderCodesLength, *status);
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}
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U_CAPI int32_t U_EXPORT2
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ucol_getEquivalentReorderCodes(int32_t reorderCode,
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int32_t* dest,
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int32_t destCapacity,
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UErrorCode *pErrorCode) {
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return Collator::getEquivalentReorderCodes(reorderCode, dest, destCapacity, *pErrorCode);
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}
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U_CAPI void U_EXPORT2
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ucol_getVersion(const UCollator* coll,
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UVersionInfo versionInfo)
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{
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Collator::fromUCollator(coll)->getVersion(versionInfo);
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}
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U_CAPI UCollationResult U_EXPORT2
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ucol_strcollIter( const UCollator *coll,
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UCharIterator *sIter,
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UCharIterator *tIter,
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UErrorCode *status)
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{
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if(!status || U_FAILURE(*status)) {
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return UCOL_EQUAL;
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}
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UTRACE_ENTRY(UTRACE_UCOL_STRCOLLITER);
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UTRACE_DATA3(UTRACE_VERBOSE, "coll=%p, sIter=%p, tIter=%p", coll, sIter, tIter);
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if(sIter == NULL || tIter == NULL || coll == NULL) {
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*status = U_ILLEGAL_ARGUMENT_ERROR;
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UTRACE_EXIT_VALUE_STATUS(UCOL_EQUAL, *status);
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return UCOL_EQUAL;
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}
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UCollationResult result = Collator::fromUCollator(coll)->compare(*sIter, *tIter, *status);
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UTRACE_EXIT_VALUE_STATUS(result, *status);
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return result;
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}
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/* */
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/* ucol_strcoll Main public API string comparison function */
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/* */
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U_CAPI UCollationResult U_EXPORT2
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ucol_strcoll( const UCollator *coll,
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const UChar *source,
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int32_t sourceLength,
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const UChar *target,
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int32_t targetLength)
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{
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UTRACE_ENTRY(UTRACE_UCOL_STRCOLL);
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if (UTRACE_LEVEL(UTRACE_VERBOSE)) {
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UTRACE_DATA3(UTRACE_VERBOSE, "coll=%p, source=%p, target=%p", coll, source, target);
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UTRACE_DATA2(UTRACE_VERBOSE, "source string = %vh ", source, sourceLength);
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UTRACE_DATA2(UTRACE_VERBOSE, "target string = %vh ", target, targetLength);
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}
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UErrorCode status = U_ZERO_ERROR;
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UCollationResult returnVal = Collator::fromUCollator(coll)->
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compare(source, sourceLength, target, targetLength, status);
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UTRACE_EXIT_VALUE_STATUS(returnVal, status);
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return returnVal;
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}
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U_CAPI UCollationResult U_EXPORT2
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ucol_strcollUTF8(
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const UCollator *coll,
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const char *source,
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int32_t sourceLength,
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const char *target,
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int32_t targetLength,
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UErrorCode *status)
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{
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UTRACE_ENTRY(UTRACE_UCOL_STRCOLLUTF8);
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if (UTRACE_LEVEL(UTRACE_VERBOSE)) {
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UTRACE_DATA3(UTRACE_VERBOSE, "coll=%p, source=%p, target=%p", coll, source, target);
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UTRACE_DATA2(UTRACE_VERBOSE, "source string = %vb ", source, sourceLength);
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UTRACE_DATA2(UTRACE_VERBOSE, "target string = %vb ", target, targetLength);
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}
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if (U_FAILURE(*status)) {
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/* do nothing */
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UTRACE_EXIT_VALUE_STATUS(UCOL_EQUAL, *status);
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return UCOL_EQUAL;
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}
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UCollationResult returnVal = Collator::fromUCollator(coll)->internalCompareUTF8(
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source, sourceLength, target, targetLength, *status);
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UTRACE_EXIT_VALUE_STATUS(returnVal, *status);
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return returnVal;
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}
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/* convenience function for comparing strings */
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U_CAPI UBool U_EXPORT2
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ucol_greater( const UCollator *coll,
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const UChar *source,
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int32_t sourceLength,
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const UChar *target,
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int32_t targetLength)
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{
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return (ucol_strcoll(coll, source, sourceLength, target, targetLength)
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== UCOL_GREATER);
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}
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/* convenience function for comparing strings */
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U_CAPI UBool U_EXPORT2
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ucol_greaterOrEqual( const UCollator *coll,
|
|
const UChar *source,
|
|
int32_t sourceLength,
|
|
const UChar *target,
|
|
int32_t targetLength)
|
|
{
|
|
return (ucol_strcoll(coll, source, sourceLength, target, targetLength)
|
|
!= UCOL_LESS);
|
|
}
|
|
|
|
/* convenience function for comparing strings */
|
|
U_CAPI UBool U_EXPORT2
|
|
ucol_equal( const UCollator *coll,
|
|
const UChar *source,
|
|
int32_t sourceLength,
|
|
const UChar *target,
|
|
int32_t targetLength)
|
|
{
|
|
return (ucol_strcoll(coll, source, sourceLength, target, targetLength)
|
|
== UCOL_EQUAL);
|
|
}
|
|
|
|
U_CAPI void U_EXPORT2
|
|
ucol_getUCAVersion(const UCollator* coll, UVersionInfo info) {
|
|
const Collator *c = Collator::fromUCollator(coll);
|
|
if(c != NULL) {
|
|
UVersionInfo v;
|
|
c->getVersion(v);
|
|
// Note: This is tied to how the current implementation encodes the UCA version
|
|
// in the overall getVersion().
|
|
// Alternatively, we could load the root collator and get at lower-level data from there.
|
|
// Either way, it will reflect the input collator's UCA version only
|
|
// if it is a known implementation.
|
|
// It would be cleaner to make this a virtual Collator method.
|
|
info[0] = v[1] >> 3;
|
|
info[1] = v[1] & 7;
|
|
info[2] = v[2] >> 6;
|
|
info[3] = 0;
|
|
}
|
|
}
|
|
|
|
U_CAPI const UChar * U_EXPORT2
|
|
ucol_getRules(const UCollator *coll, int32_t *length) {
|
|
const RuleBasedCollator *rbc = RuleBasedCollator::rbcFromUCollator(coll);
|
|
// OK to crash if coll==NULL: We do not want to check "this" pointers.
|
|
if(rbc != NULL || coll == NULL) {
|
|
const UnicodeString &rules = rbc->getRules();
|
|
U_ASSERT(rules.getBuffer()[rules.length()] == 0);
|
|
*length = rules.length();
|
|
return rules.getBuffer();
|
|
}
|
|
static const UChar _NUL = 0;
|
|
*length = 0;
|
|
return &_NUL;
|
|
}
|
|
|
|
U_CAPI int32_t U_EXPORT2
|
|
ucol_getRulesEx(const UCollator *coll, UColRuleOption delta, UChar *buffer, int32_t bufferLen) {
|
|
UnicodeString rules;
|
|
const RuleBasedCollator *rbc = RuleBasedCollator::rbcFromUCollator(coll);
|
|
if(rbc != NULL || coll == NULL) {
|
|
rbc->getRules(delta, rules);
|
|
}
|
|
if(buffer != NULL && bufferLen > 0) {
|
|
UErrorCode errorCode = U_ZERO_ERROR;
|
|
return rules.extract(buffer, bufferLen, errorCode);
|
|
} else {
|
|
return rules.length();
|
|
}
|
|
}
|
|
|
|
U_CAPI const char * U_EXPORT2
|
|
ucol_getLocale(const UCollator *coll, ULocDataLocaleType type, UErrorCode *status) {
|
|
return ucol_getLocaleByType(coll, type, status);
|
|
}
|
|
|
|
U_CAPI const char * U_EXPORT2
|
|
ucol_getLocaleByType(const UCollator *coll, ULocDataLocaleType type, UErrorCode *status) {
|
|
if(U_FAILURE(*status)) {
|
|
return NULL;
|
|
}
|
|
UTRACE_ENTRY(UTRACE_UCOL_GETLOCALE);
|
|
UTRACE_DATA1(UTRACE_INFO, "coll=%p", coll);
|
|
|
|
const char *result;
|
|
const RuleBasedCollator *rbc = RuleBasedCollator::rbcFromUCollator(coll);
|
|
if(rbc == NULL && coll != NULL) {
|
|
*status = U_UNSUPPORTED_ERROR;
|
|
result = NULL;
|
|
} else {
|
|
result = rbc->internalGetLocaleID(type, *status);
|
|
}
|
|
|
|
UTRACE_DATA1(UTRACE_INFO, "result = %s", result);
|
|
UTRACE_EXIT_STATUS(*status);
|
|
return result;
|
|
}
|
|
|
|
U_CAPI USet * U_EXPORT2
|
|
ucol_getTailoredSet(const UCollator *coll, UErrorCode *status) {
|
|
if(U_FAILURE(*status)) {
|
|
return NULL;
|
|
}
|
|
UnicodeSet *set = Collator::fromUCollator(coll)->getTailoredSet(*status);
|
|
if(U_FAILURE(*status)) {
|
|
delete set;
|
|
return NULL;
|
|
}
|
|
return set->toUSet();
|
|
}
|
|
|
|
U_CAPI UBool U_EXPORT2
|
|
ucol_equals(const UCollator *source, const UCollator *target) {
|
|
return source == target ||
|
|
(*Collator::fromUCollator(source)) == (*Collator::fromUCollator(target));
|
|
}
|
|
|
|
#endif /* #if !UCONFIG_NO_COLLATION */
|