projects / apple / icu.git / blame
| Commit | Line | Data |
|---|---|---|
| 4388f060 A |
1 | /* |
| 2 | ******************************************************************************* | |
| 3 | * Copyright (C) 2011, International Business Machines | |
| 4 | * Corporation and others. All Rights Reserved. | |
| 5 | ******************************************************************************* | |
| 6 | * file name: appendable.cpp | |
| 7 | * encoding: US-ASCII | |
| 8 | * tab size: 8 (not used) | |
| 9 | * indentation:4 | |
| 10 | * | |
| 11 | * created on: 2010dec07 | |
| 12 | * created by: Markus W. Scherer | |
| 13 | */ | |
| 14 | ||
| 15 | #include "unicode/utypes.h" | |
| 16 | #include "unicode/appendable.h" | |
| 17 | #include "unicode/utf16.h" | |
| 18 | ||
| 19 | U_NAMESPACE_BEGIN | |
| 20 | ||
| 21 | Appendable::~Appendable() {} | |
| 22 | ||
| 23 | UBool | |
| 24 | Appendable::appendCodePoint(UChar32 c) { | |
| 25 | if(c<=0xffff) { | |
| 26 | return appendCodeUnit((UChar)c); | |
| 27 | } else { | |
| 28 | return appendCodeUnit(U16_LEAD(c)) && appendCodeUnit(U16_TRAIL(c)); | |
| 29 | } | |
| 30 | } | |
| 31 | ||
| 32 | UBool | |
| 33 | Appendable::appendString(const UChar *s, int32_t length) { | |
| 34 | if(length<0) { | |
| 35 | UChar c; | |
| 36 | while((c=*s++)!=0) { | |
| 37 | if(!appendCodeUnit(c)) { | |
| 38 | return FALSE; | |
| 39 | } | |
| 40 | } | |
| 41 | } else if(length>0) { | |
| 42 | const UChar *limit=s+length; | |
| 43 | do { | |
| 44 | if(!appendCodeUnit(*s++)) { | |
| 45 | return FALSE; | |
| 46 | } | |
| 47 | } while(s<limit); | |
| 48 | } | |
| 49 | return TRUE; | |
| 50 | } | |
| 51 | ||
| 52 | UBool | |
| 53 | Appendable::reserveAppendCapacity(int32_t /*appendCapacity*/) { | |
| 54 | return TRUE; | |
| 55 | } | |
| 56 | ||
| 57 | UChar * | |
| 58 | Appendable::getAppendBuffer(int32_t minCapacity, | |
| 59 | int32_t /*desiredCapacityHint*/, | |
| 60 | UChar *scratch, int32_t scratchCapacity, | |
| 61 | int32_t *resultCapacity) { | |
| 62 | if(minCapacity<1 || scratchCapacity<minCapacity) { | |
| 63 | *resultCapacity=0; | |
| 64 | return NULL; | |
| 65 | } | |
| 66 | *resultCapacity=scratchCapacity; | |
| 67 | return scratch; | |
| 68 | } | |
| 69 | ||
| 70 | UOBJECT_DEFINE_NO_RTTI_IMPLEMENTATION(Appendable) | |
| 71 | ||
| 72 | // UnicodeStringAppendable is implemented in unistr.cpp. | |
| 73 | ||
| 74 | U_NAMESPACE_END |