74 lines
1.9 KiB
C++
74 lines
1.9 KiB
C++
// © 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) 2011-2012, International Business Machines
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* Corporation and others. All Rights Reserved.
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*******************************************************************************
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* file name: appendable.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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* created on: 2010dec07
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* created by: Markus W. Scherer
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*/
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#include "unicode/utypes.h"
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#include "unicode/appendable.h"
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#include "unicode/utf16.h"
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U_NAMESPACE_BEGIN
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Appendable::~Appendable() {}
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UBool
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Appendable::appendCodePoint(UChar32 c) {
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if(c<=0xffff) {
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return appendCodeUnit((UChar)c);
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} else {
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return appendCodeUnit(U16_LEAD(c)) && appendCodeUnit(U16_TRAIL(c));
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}
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}
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UBool
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Appendable::appendString(const UChar *s, int32_t length) {
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if(length<0) {
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UChar c;
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while((c=*s++)!=0) {
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if(!appendCodeUnit(c)) {
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return FALSE;
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}
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}
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} else if(length>0) {
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const UChar *limit=s+length;
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do {
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if(!appendCodeUnit(*s++)) {
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return FALSE;
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}
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} while(s<limit);
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}
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return TRUE;
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}
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UBool
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Appendable::reserveAppendCapacity(int32_t /*appendCapacity*/) {
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return TRUE;
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}
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UChar *
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Appendable::getAppendBuffer(int32_t minCapacity,
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int32_t /*desiredCapacityHint*/,
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UChar *scratch, int32_t scratchCapacity,
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int32_t *resultCapacity) {
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if(minCapacity<1 || scratchCapacity<minCapacity) {
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*resultCapacity=0;
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return NULL;
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}
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*resultCapacity=scratchCapacity;
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return scratch;
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}
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// UnicodeStringAppendable is implemented in unistr.cpp.
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U_NAMESPACE_END
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