/src/icu/source/common/appendable.cpp
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1 | | // © 2016 and later: Unicode, Inc. and others. |
2 | | // License & terms of use: http://www.unicode.org/copyright.html |
3 | | /* |
4 | | ******************************************************************************* |
5 | | * Copyright (C) 2011-2012, International Business Machines |
6 | | * Corporation and others. All Rights Reserved. |
7 | | ******************************************************************************* |
8 | | * file name: appendable.cpp |
9 | | * encoding: UTF-8 |
10 | | * tab size: 8 (not used) |
11 | | * indentation:4 |
12 | | * |
13 | | * created on: 2010dec07 |
14 | | * created by: Markus W. Scherer |
15 | | */ |
16 | | |
17 | | #include "unicode/utypes.h" |
18 | | #include "unicode/appendable.h" |
19 | | #include "unicode/utf16.h" |
20 | | |
21 | | U_NAMESPACE_BEGIN |
22 | | |
23 | 0 | Appendable::~Appendable() {} |
24 | | |
25 | | UBool |
26 | 0 | Appendable::appendCodePoint(UChar32 c) { |
27 | 0 | if(c<=0xffff) { |
28 | 0 | return appendCodeUnit((UChar)c); |
29 | 0 | } else { |
30 | 0 | return appendCodeUnit(U16_LEAD(c)) && appendCodeUnit(U16_TRAIL(c)); |
31 | 0 | } |
32 | 0 | } |
33 | | |
34 | | UBool |
35 | 0 | Appendable::appendString(const UChar *s, int32_t length) { |
36 | 0 | if(length<0) { |
37 | 0 | UChar c; |
38 | 0 | while((c=*s++)!=0) { |
39 | 0 | if(!appendCodeUnit(c)) { |
40 | 0 | return FALSE; |
41 | 0 | } |
42 | 0 | } |
43 | 0 | } else if(length>0) { |
44 | 0 | const UChar *limit=s+length; |
45 | 0 | do { |
46 | 0 | if(!appendCodeUnit(*s++)) { |
47 | 0 | return FALSE; |
48 | 0 | } |
49 | 0 | } while(s<limit); |
50 | 0 | } |
51 | 0 | return TRUE; |
52 | 0 | } |
53 | | |
54 | | UBool |
55 | 0 | Appendable::reserveAppendCapacity(int32_t /*appendCapacity*/) { |
56 | 0 | return TRUE; |
57 | 0 | } |
58 | | |
59 | | UChar * |
60 | | Appendable::getAppendBuffer(int32_t minCapacity, |
61 | | int32_t /*desiredCapacityHint*/, |
62 | | UChar *scratch, int32_t scratchCapacity, |
63 | 0 | int32_t *resultCapacity) { |
64 | 0 | if(minCapacity<1 || scratchCapacity<minCapacity) { |
65 | 0 | *resultCapacity=0; |
66 | 0 | return NULL; |
67 | 0 | } |
68 | 0 | *resultCapacity=scratchCapacity; |
69 | 0 | return scratch; |
70 | 0 | } |
71 | | |
72 | | // UnicodeStringAppendable is implemented in unistr.cpp. |
73 | | |
74 | | U_NAMESPACE_END |