1999-08-16 21:50:52 +00:00
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/*
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1999-11-22 20:25:35 +00:00
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*******************************************************************************
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2006-04-21 18:56:24 +00:00
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* Copyright (C) 1996-2006, International Business Machines Corporation and *
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1999-11-22 20:25:35 +00:00
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* others. All Rights Reserved. *
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*******************************************************************************
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1999-08-16 21:50:52 +00:00
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*/
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2001-01-18 00:23:29 +00:00
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/*
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2001-01-30 18:52:58 +00:00
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* File coleitr.cpp
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*
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*
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*
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* Created by: Helena Shih
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*
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* Modification History:
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*
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2001-02-20 00:26:50 +00:00
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* Date Name Description
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2001-01-30 18:52:58 +00:00
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*
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2001-02-20 00:26:50 +00:00
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* 6/23/97 helena Adding comments to make code more readable.
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* 08/03/98 erm Synched with 1.2 version of CollationElementIterator.java
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* 12/10/99 aliu Ported Thai collation support from Java.
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* 01/25/01 swquek Modified to a C++ wrapper calling C APIs (ucoliter.h)
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* 02/19/01 swquek Removed CollationElementsIterator() since it is
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* private constructor and no calls are made to it
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2001-01-18 00:23:29 +00:00
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*/
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2002-09-20 01:54:48 +00:00
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#include "unicode/utypes.h"
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#if !UCONFIG_NO_COLLATION
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1999-12-28 23:57:50 +00:00
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#include "unicode/coleitr.h"
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2002-07-12 21:42:24 +00:00
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#include "unicode/ustring.h"
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2001-03-08 17:40:42 +00:00
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#include "ucol_imp.h"
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2001-02-20 00:26:50 +00:00
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#include "cmemory.h"
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1999-08-16 21:50:52 +00:00
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1999-12-10 18:53:45 +00:00
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2001-02-20 00:26:50 +00:00
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/* Constants --------------------------------------------------------------- */
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1999-08-16 21:50:52 +00:00
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2001-10-08 23:26:58 +00:00
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U_NAMESPACE_BEGIN
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2003-08-31 20:53:46 +00:00
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UOBJECT_DEFINE_RTTI_IMPLEMENTATION(CollationElementIterator)
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2002-06-29 00:04:16 +00:00
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2001-02-20 00:26:50 +00:00
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/* CollationElementIterator public constructor/destructor ------------------ */
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1999-08-16 21:50:52 +00:00
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2001-01-18 00:23:29 +00:00
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CollationElementIterator::CollationElementIterator(
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2001-02-20 00:26:50 +00:00
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const CollationElementIterator& other)
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2002-07-02 23:58:34 +00:00
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: UObject(other), isDataOwned_(TRUE)
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2001-01-18 00:23:29 +00:00
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{
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2006-04-21 18:56:24 +00:00
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UErrorCode status = U_ZERO_ERROR;
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m_data_ = ucol_openElements(other.m_data_->iteratordata_.coll, NULL, 0,
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&status);
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2002-07-02 15:10:30 +00:00
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2006-04-21 18:56:24 +00:00
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*this = other;
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2001-01-18 00:23:29 +00:00
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}
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1999-08-16 21:50:52 +00:00
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2001-01-18 00:23:29 +00:00
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CollationElementIterator::~CollationElementIterator()
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1999-08-16 21:50:52 +00:00
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{
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2006-04-21 18:56:24 +00:00
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if (isDataOwned_) {
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ucol_closeElements(m_data_);
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}
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1999-08-16 21:50:52 +00:00
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}
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2001-02-20 00:26:50 +00:00
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/* CollationElementIterator public methods --------------------------------- */
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1999-08-16 21:50:52 +00:00
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2002-03-12 01:32:42 +00:00
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int32_t CollationElementIterator::getOffset() const
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1999-08-16 21:50:52 +00:00
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{
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2006-04-21 18:56:24 +00:00
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return ucol_getOffset(m_data_);
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1999-08-16 21:50:52 +00:00
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}
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2001-01-18 00:23:29 +00:00
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/**
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* Get the ordering priority of the next character in the string.
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2001-02-21 01:58:55 +00:00
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* @return the next character's ordering. Returns NULLORDER if an error has
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2001-02-22 23:16:06 +00:00
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* occured or if the end of string has been reached
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2001-01-18 00:23:29 +00:00
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*/
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int32_t CollationElementIterator::next(UErrorCode& status)
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1999-08-16 21:50:52 +00:00
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{
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2006-04-21 18:56:24 +00:00
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return ucol_next(m_data_, &status);
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1999-08-16 21:50:52 +00:00
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}
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2001-01-18 00:23:29 +00:00
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UBool CollationElementIterator::operator!=(
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2001-02-20 00:26:50 +00:00
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const CollationElementIterator& other) const
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1999-08-16 21:50:52 +00:00
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{
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2006-04-21 18:56:24 +00:00
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return !(*this == other);
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1999-08-16 21:50:52 +00:00
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}
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2001-02-20 00:26:50 +00:00
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UBool CollationElementIterator::operator==(
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const CollationElementIterator& that) const
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1999-08-16 21:50:52 +00:00
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{
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2001-06-27 19:27:56 +00:00
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if (this == &that) {
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return TRUE;
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}
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2001-02-20 00:26:50 +00:00
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2001-06-27 19:27:56 +00:00
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if (m_data_ == that.m_data_) {
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return TRUE;
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}
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2001-04-12 00:08:26 +00:00
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2001-06-27 19:27:56 +00:00
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// option comparison
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2003-07-09 23:16:04 +00:00
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if (m_data_->iteratordata_.coll != that.m_data_->iteratordata_.coll)
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2002-08-09 02:06:16 +00:00
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{
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return FALSE;
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2001-06-27 19:27:56 +00:00
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}
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2002-08-09 02:06:16 +00:00
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// the constructor and setText always sets a length
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// and we only compare the string not the contents of the normalization
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// buffer
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int thislength = m_data_->iteratordata_.endp -
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m_data_->iteratordata_.string;
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int thatlength = that.m_data_->iteratordata_.endp -
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2001-06-27 19:27:56 +00:00
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that.m_data_->iteratordata_.string;
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2002-08-09 02:06:16 +00:00
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if (thislength != thatlength) {
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return FALSE;
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2001-06-27 19:27:56 +00:00
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}
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2002-08-09 02:06:16 +00:00
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if (uprv_memcmp(m_data_->iteratordata_.string,
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that.m_data_->iteratordata_.string,
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thislength * U_SIZEOF_UCHAR) != 0) {
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return FALSE;
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}
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if (getOffset() != that.getOffset()) {
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2001-06-27 19:27:56 +00:00
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return FALSE;
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}
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2002-08-09 02:06:16 +00:00
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// checking normalization buffer
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if ((m_data_->iteratordata_.flags & UCOL_ITER_HASLEN) == 0) {
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if ((m_data_->iteratordata_.flags & UCOL_ITER_HASLEN) != 0) {
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return FALSE;
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}
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// both are in the normalization buffer
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if (m_data_->iteratordata_.pos
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- m_data_->iteratordata_.writableBuffer
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!= that.m_data_->iteratordata_.pos
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- that.m_data_->iteratordata_.writableBuffer) {
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// not in the same position in the normalization buffer
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return FALSE;
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}
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}
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else if ((m_data_->iteratordata_.flags & UCOL_ITER_HASLEN) == 0) {
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return FALSE;
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}
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// checking ce position
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return (m_data_->iteratordata_.CEpos - m_data_->iteratordata_.CEs)
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== (that.m_data_->iteratordata_.CEpos
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- that.m_data_->iteratordata_.CEs);
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1999-08-16 21:50:52 +00:00
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}
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2001-01-18 00:23:29 +00:00
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/**
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* Get the ordering priority of the previous collation element in the string.
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* @param status the error code status.
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2001-02-21 01:58:55 +00:00
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* @return the previous element's ordering. Returns NULLORDER if an error has
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2001-02-22 23:16:06 +00:00
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* occured or if the start of string has been reached.
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2001-01-18 00:23:29 +00:00
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*/
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int32_t CollationElementIterator::previous(UErrorCode& status)
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1999-08-16 21:50:52 +00:00
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{
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2006-04-21 18:56:24 +00:00
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return ucol_previous(m_data_, &status);
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1999-08-16 21:50:52 +00:00
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}
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/**
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2001-01-18 00:23:29 +00:00
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* Resets the cursor to the beginning of the string.
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*/
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void CollationElementIterator::reset()
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1999-08-16 21:50:52 +00:00
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{
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2006-04-21 18:56:24 +00:00
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ucol_reset(m_data_);
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1999-08-16 21:50:52 +00:00
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}
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2002-03-12 01:32:42 +00:00
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void CollationElementIterator::setOffset(int32_t newOffset,
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2001-01-18 00:23:29 +00:00
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UErrorCode& status)
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1999-08-16 21:50:52 +00:00
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{
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2006-04-21 18:56:24 +00:00
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ucol_setOffset(m_data_, newOffset, &status);
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1999-08-16 21:50:52 +00:00
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}
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2001-01-18 00:23:29 +00:00
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/**
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* Sets the source to the new source string.
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*/
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void CollationElementIterator::setText(const UnicodeString& source,
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UErrorCode& status)
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1999-08-16 21:50:52 +00:00
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{
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2006-04-21 18:56:24 +00:00
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if (U_FAILURE(status)) {
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2002-06-29 09:31:05 +00:00
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return;
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}
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2006-04-21 18:56:24 +00:00
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int32_t length = source.length();
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UChar *string = NULL;
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if (m_data_->isWritable && m_data_->iteratordata_.string != NULL) {
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uprv_free(m_data_->iteratordata_.string);
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}
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m_data_->isWritable = TRUE;
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if (length > 0) {
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string = (UChar *)uprv_malloc(U_SIZEOF_UCHAR * length);
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/* test for NULL */
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if (string == NULL) {
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status = U_MEMORY_ALLOCATION_ERROR;
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return;
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}
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u_memcpy(string, source.getBuffer(), length);
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}
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else {
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string = (UChar *)uprv_malloc(U_SIZEOF_UCHAR);
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/* test for NULL */
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if (string == NULL) {
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status = U_MEMORY_ALLOCATION_ERROR;
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return;
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}
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*string = 0;
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2002-06-29 09:31:05 +00:00
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}
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2006-04-21 18:56:24 +00:00
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uprv_init_collIterate(m_data_->iteratordata_.coll, string, length,
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&m_data_->iteratordata_);
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2001-06-26 17:41:10 +00:00
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2006-04-21 18:56:24 +00:00
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m_data_->reset_ = TRUE;
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1999-08-16 21:50:52 +00:00
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}
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2001-01-18 00:23:29 +00:00
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// Sets the source to the new character iterator.
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void CollationElementIterator::setText(CharacterIterator& source,
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UErrorCode& status)
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1999-08-16 21:50:52 +00:00
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{
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2006-04-21 18:56:24 +00:00
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if (U_FAILURE(status))
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2002-06-29 09:31:05 +00:00
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return;
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2006-04-21 18:56:24 +00:00
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int32_t length = source.getLength();
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UChar *buffer = NULL;
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if (length == 0) {
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buffer = (UChar *)uprv_malloc(U_SIZEOF_UCHAR);
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/* test for NULL */
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if (buffer == NULL) {
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status = U_MEMORY_ALLOCATION_ERROR;
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return;
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}
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*buffer = 0;
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2002-06-29 09:31:05 +00:00
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}
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2006-04-21 18:56:24 +00:00
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else {
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buffer = (UChar *)uprv_malloc(U_SIZEOF_UCHAR * length);
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/* test for NULL */
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if (buffer == NULL) {
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status = U_MEMORY_ALLOCATION_ERROR;
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return;
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}
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/*
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Using this constructor will prevent buffer from being removed when
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string gets removed
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*/
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UnicodeString string;
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source.getText(string);
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u_memcpy(buffer, string.getBuffer(), length);
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}
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if (m_data_->isWritable && m_data_->iteratordata_.string != NULL) {
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uprv_free(m_data_->iteratordata_.string);
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}
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m_data_->isWritable = TRUE;
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uprv_init_collIterate(m_data_->iteratordata_.coll, buffer, length,
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&m_data_->iteratordata_);
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m_data_->reset_ = TRUE;
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2001-01-18 00:23:29 +00:00
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}
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1999-08-16 21:50:52 +00:00
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2001-01-18 00:23:29 +00:00
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int32_t CollationElementIterator::strengthOrder(int32_t order) const
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{
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2006-04-21 18:56:24 +00:00
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UCollationStrength s = ucol_getStrength(m_data_->iteratordata_.coll);
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// Mask off the unwanted differences.
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if (s == UCOL_PRIMARY) {
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order &= RuleBasedCollator::PRIMARYDIFFERENCEONLY;
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}
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else if (s == UCOL_SECONDARY) {
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order &= RuleBasedCollator::SECONDARYDIFFERENCEONLY;
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}
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return order;
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2001-01-18 00:23:29 +00:00
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}
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1999-08-16 21:50:52 +00:00
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2001-02-20 00:26:50 +00:00
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/* CollationElementIterator private constructors/destructors --------------- */
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1999-08-16 21:50:52 +00:00
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2001-01-18 00:23:29 +00:00
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/**
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* This is the "real" constructor for this class; it constructs an iterator
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* over the source text using the specified collator
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*/
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CollationElementIterator::CollationElementIterator(
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2001-02-21 01:58:55 +00:00
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const UnicodeString& sourceText,
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const RuleBasedCollator* order,
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UErrorCode& status)
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: isDataOwned_(TRUE)
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1999-08-16 21:50:52 +00:00
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{
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2006-04-21 18:56:24 +00:00
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if (U_FAILURE(status)) {
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2002-06-29 09:31:05 +00:00
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return;
|
2006-04-21 18:56:24 +00:00
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}
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int32_t length = sourceText.length();
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UChar *string = NULL;
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if (length > 0) {
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string = (UChar *)uprv_malloc(U_SIZEOF_UCHAR * length);
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/* test for NULL */
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if (string == NULL) {
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status = U_MEMORY_ALLOCATION_ERROR;
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return;
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}
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/*
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Using this constructor will prevent buffer from being removed when
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string gets removed
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*/
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u_memcpy(string, sourceText.getBuffer(), length);
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}
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else {
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string = (UChar *)uprv_malloc(U_SIZEOF_UCHAR);
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|
|
/* test for NULL */
|
|
|
|
if (string == NULL) {
|
|
|
|
status = U_MEMORY_ALLOCATION_ERROR;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
*string = 0;
|
|
|
|
}
|
|
|
|
m_data_ = ucol_openElements(order->ucollator, string, length, &status);
|
|
|
|
|
|
|
|
/* Test for buffer overflows */
|
|
|
|
if (U_FAILURE(status)) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
m_data_->isWritable = TRUE;
|
1999-08-16 21:50:52 +00:00
|
|
|
}
|
|
|
|
|
2001-01-18 00:23:29 +00:00
|
|
|
/**
|
|
|
|
* This is the "real" constructor for this class; it constructs an iterator over
|
|
|
|
* the source text using the specified collator
|
|
|
|
*/
|
|
|
|
CollationElementIterator::CollationElementIterator(
|
2001-02-20 00:26:50 +00:00
|
|
|
const CharacterIterator& sourceText,
|
|
|
|
const RuleBasedCollator* order,
|
|
|
|
UErrorCode& status)
|
|
|
|
: isDataOwned_(TRUE)
|
1999-08-16 21:50:52 +00:00
|
|
|
{
|
2006-04-21 18:56:24 +00:00
|
|
|
if (U_FAILURE(status))
|
2002-06-29 09:31:05 +00:00
|
|
|
return;
|
2006-04-21 18:56:24 +00:00
|
|
|
|
|
|
|
// **** should I just drop this test? ****
|
|
|
|
/*
|
|
|
|
if ( sourceText.endIndex() != 0 )
|
|
|
|
{
|
|
|
|
// A CollationElementIterator is really a two-layered beast.
|
|
|
|
// Internally it uses a Normalizer to munge the source text into a form
|
|
|
|
// where all "composed" Unicode characters (such as \u00FC) are split into a
|
|
|
|
// normal character and a combining accent character.
|
|
|
|
// Afterward, CollationElementIterator does its own processing to handle
|
|
|
|
// expanding and contracting collation sequences, ignorables, and so on.
|
|
|
|
|
|
|
|
Normalizer::EMode decomp = order->getStrength() == Collator::IDENTICAL
|
|
|
|
? Normalizer::NO_OP : order->getDecomposition();
|
|
|
|
|
|
|
|
text = new Normalizer(sourceText, decomp);
|
|
|
|
if (text == NULL)
|
|
|
|
status = U_MEMORY_ALLOCATION_ERROR;
|
|
|
|
}
|
|
|
|
*/
|
|
|
|
int32_t length = sourceText.getLength();
|
|
|
|
UChar *buffer;
|
|
|
|
if (length > 0) {
|
|
|
|
buffer = (UChar *)uprv_malloc(U_SIZEOF_UCHAR * length);
|
|
|
|
/* test for NULL */
|
|
|
|
if (buffer == NULL) {
|
|
|
|
status = U_MEMORY_ALLOCATION_ERROR;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
Using this constructor will prevent buffer from being removed when
|
|
|
|
string gets removed
|
|
|
|
*/
|
|
|
|
UnicodeString string(buffer, length, length);
|
|
|
|
((CharacterIterator &)sourceText).getText(string);
|
|
|
|
const UChar *temp = string.getBuffer();
|
|
|
|
u_memcpy(buffer, temp, length);
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
buffer = (UChar *)uprv_malloc(U_SIZEOF_UCHAR);
|
|
|
|
/* test for NULL */
|
|
|
|
if (buffer == NULL) {
|
|
|
|
status = U_MEMORY_ALLOCATION_ERROR;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
*buffer = 0;
|
|
|
|
}
|
|
|
|
m_data_ = ucol_openElements(order->ucollator, buffer, length, &status);
|
|
|
|
|
|
|
|
/* Test for buffer overflows */
|
|
|
|
if (U_FAILURE(status)) {
|
2002-06-29 09:31:05 +00:00
|
|
|
return;
|
2006-04-21 18:56:24 +00:00
|
|
|
}
|
|
|
|
m_data_->isWritable = TRUE;
|
1999-08-16 21:50:52 +00:00
|
|
|
}
|
|
|
|
|
2001-04-12 00:08:26 +00:00
|
|
|
/* CollationElementIterator protected methods ----------------------------- */
|
2001-01-18 00:23:29 +00:00
|
|
|
|
|
|
|
const CollationElementIterator& CollationElementIterator::operator=(
|
2001-02-20 00:26:50 +00:00
|
|
|
const CollationElementIterator& other)
|
1999-08-16 21:50:52 +00:00
|
|
|
{
|
2006-04-21 18:56:24 +00:00
|
|
|
if (this != &other)
|
|
|
|
{
|
|
|
|
UCollationElements *ucolelem = this->m_data_;
|
|
|
|
UCollationElements *otherucolelem = other.m_data_;
|
|
|
|
collIterate *coliter = &(ucolelem->iteratordata_);
|
|
|
|
collIterate *othercoliter = &(otherucolelem->iteratordata_);
|
|
|
|
int length = 0;
|
|
|
|
|
|
|
|
// checking only UCOL_ITER_HASLEN is not enough here as we may be in
|
|
|
|
// the normalization buffer
|
|
|
|
length = othercoliter->endp - othercoliter->string;
|
|
|
|
|
|
|
|
ucolelem->reset_ = otherucolelem->reset_;
|
|
|
|
ucolelem->isWritable = TRUE;
|
|
|
|
|
|
|
|
/* create a duplicate of string */
|
|
|
|
if (length > 0) {
|
|
|
|
coliter->string = (UChar *)uprv_malloc(length * U_SIZEOF_UCHAR);
|
|
|
|
if(coliter->string != NULL) {
|
|
|
|
uprv_memcpy(coliter->string, othercoliter->string,
|
|
|
|
length * U_SIZEOF_UCHAR);
|
|
|
|
} else { // Error: couldn't allocate memory. No copying should be done
|
|
|
|
length = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
coliter->string = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* start and end of string */
|
|
|
|
coliter->endp = coliter->string + length;
|
|
|
|
|
|
|
|
/* handle writable buffer here */
|
|
|
|
|
|
|
|
if (othercoliter->flags & UCOL_ITER_INNORMBUF) {
|
|
|
|
uint32_t wlength = u_strlen(othercoliter->writableBuffer) + 1;
|
|
|
|
if (wlength < coliter->writableBufSize) {
|
|
|
|
uprv_memcpy(coliter->stackWritableBuffer,
|
|
|
|
othercoliter->stackWritableBuffer,
|
|
|
|
wlength * U_SIZEOF_UCHAR);
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
if (coliter->writableBuffer != coliter->stackWritableBuffer) {
|
|
|
|
uprv_free(coliter->writableBuffer);
|
|
|
|
}
|
|
|
|
coliter->writableBuffer = (UChar *)uprv_malloc(
|
|
|
|
wlength * U_SIZEOF_UCHAR);
|
|
|
|
if(coliter->writableBuffer != NULL) {
|
|
|
|
uprv_memcpy(coliter->writableBuffer,
|
|
|
|
othercoliter->writableBuffer,
|
|
|
|
wlength * U_SIZEOF_UCHAR);
|
|
|
|
coliter->writableBufSize = wlength;
|
|
|
|
} else { // Error: couldn't allocate memory for writableBuffer
|
|
|
|
coliter->writableBufSize = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* current position */
|
|
|
|
if (othercoliter->pos >= othercoliter->string &&
|
|
|
|
othercoliter->pos <= othercoliter->endp)
|
|
|
|
{
|
|
|
|
coliter->pos = coliter->string +
|
|
|
|
(othercoliter->pos - othercoliter->string);
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
coliter->pos = coliter->writableBuffer +
|
|
|
|
(othercoliter->pos - othercoliter->writableBuffer);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* CE buffer */
|
|
|
|
int32_t CEsize = (int32_t)(othercoliter->CEpos - othercoliter->CEs);
|
|
|
|
if (CEsize > 0) {
|
|
|
|
uprv_memcpy(coliter->CEs, othercoliter->CEs, CEsize);
|
|
|
|
}
|
|
|
|
coliter->toReturn = coliter->CEs +
|
|
|
|
(othercoliter->toReturn - othercoliter->CEs);
|
|
|
|
coliter->CEpos = coliter->CEs + CEsize;
|
|
|
|
|
|
|
|
if (othercoliter->fcdPosition != NULL) {
|
|
|
|
coliter->fcdPosition = coliter->string +
|
|
|
|
(othercoliter->fcdPosition
|
|
|
|
- othercoliter->string);
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
coliter->fcdPosition = NULL;
|
|
|
|
}
|
|
|
|
coliter->flags = othercoliter->flags/*| UCOL_ITER_HASLEN*/;
|
|
|
|
coliter->origFlags = othercoliter->origFlags;
|
|
|
|
coliter->coll = othercoliter->coll;
|
|
|
|
this->isDataOwned_ = TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
return *this;
|
1999-08-16 21:50:52 +00:00
|
|
|
}
|
|
|
|
|
2001-10-08 23:26:58 +00:00
|
|
|
U_NAMESPACE_END
|
1999-08-16 21:50:52 +00:00
|
|
|
|
2002-09-20 01:54:48 +00:00
|
|
|
#endif /* #if !UCONFIG_NO_COLLATION */
|
|
|
|
|
2001-10-08 23:26:58 +00:00
|
|
|
/* eof */
|