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1 | /********************************************************************** | |
2 | * © 2016 and later: Unicode, Inc. and others. | |
3 | * License & terms of use: http://www.unicode.org/copyright.html#License | |
4 | ********************************************************************** | |
5 | ********************************************************************** | |
6 | * COPYRIGHT: | |
7 | * Copyright (c) 1999-2003, International Business Machines Corporation and | |
8 | * others. All Rights Reserved. | |
9 | **********************************************************************/ | |
10 | ||
11 | #include "unaccent.h" | |
12 | ||
13 | const char UnaccentTransliterator::fgClassID = 0; | |
14 | ||
15 | /** | |
16 | * Constructor | |
17 | */ | |
18 | UnaccentTransliterator::UnaccentTransliterator() : | |
19 | normalizer("", UNORM_NFD), | |
20 | Transliterator("Unaccent", 0) { | |
21 | } | |
22 | ||
23 | /** | |
24 | * Destructor | |
25 | */ | |
26 | UnaccentTransliterator::~UnaccentTransliterator() { | |
27 | } | |
28 | ||
29 | /** | |
30 | * Remove accents from a character using Normalizer. | |
31 | */ | |
32 | UChar UnaccentTransliterator::unaccent(UChar c) const { | |
33 | UnicodeString str(c); | |
34 | UErrorCode status = U_ZERO_ERROR; | |
35 | UnaccentTransliterator* t = (UnaccentTransliterator*)this; | |
36 | ||
37 | t->normalizer.setText(str, status); | |
38 | if (U_FAILURE(status)) { | |
39 | return c; | |
40 | } | |
41 | return (UChar) t->normalizer.next(); | |
42 | } | |
43 | ||
44 | /** | |
45 | * Implement Transliterator API | |
46 | */ | |
47 | void UnaccentTransliterator::handleTransliterate(Replaceable& text, | |
48 | UTransPosition& index, | |
49 | UBool incremental) const { | |
50 | UnicodeString str("a"); | |
51 | while (index.start < index.limit) { | |
52 | UChar c = text.charAt(index.start); | |
53 | UChar d = unaccent(c); | |
54 | if (c != d) { | |
55 | str.setCharAt(0, d); | |
56 | text.handleReplaceBetween(index.start, index.start+1, str); | |
57 | } | |
58 | index.start++; | |
59 | } | |
60 | } |