| // © 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 |
