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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
* Copyright (C) 2011-2012, International Business Machines
* Corporation and others. All Rights Reserved.
*******************************************************************************
* file name: appendable.cpp
* encoding: UTF-8
* tab size: 8 (not used)
* indentation:4
*
* created on: 2010dec07
* created by: Markus W. Scherer
*/
#include "unicode/utypes.h"
#include "unicode/appendable.h"
#include "unicode/utf16.h"
U_NAMESPACE_BEGIN
Appendable::~Appendable() {}
UBool
Appendable::appendCodePoint(UChar32 c) {
if(c<=0xffff) {
return appendCodeUnit((UChar)c);
} else {
return appendCodeUnit(U16_LEAD(c)) && appendCodeUnit(U16_TRAIL(c));
}
}
UBool
Appendable::appendString(const UChar *s, int32_t length) {
if(length<0) {
UChar c;
while((c=*s++)!=0) {
if(!appendCodeUnit(c)) {
return FALSE;
}
}
} else if(length>0) {
const UChar *limit=s+length;
do {
if(!appendCodeUnit(*s++)) {
return FALSE;
}
} while(s<limit);
}
return TRUE;
}
UBool
Appendable::reserveAppendCapacity(int32_t /*appendCapacity*/) {
return TRUE;
}
UChar *
Appendable::getAppendBuffer(int32_t minCapacity,
int32_t /*desiredCapacityHint*/,
UChar *scratch, int32_t scratchCapacity,
int32_t *resultCapacity) {
if(minCapacity<1 || scratchCapacity<minCapacity) {
*resultCapacity=0;
return NULL;
}
*resultCapacity=scratchCapacity;
return scratch;
}
// UnicodeStringAppendable is implemented in unistr.cpp.
U_NAMESPACE_END
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