projects / apple / icu.git / blame
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1 | // © 2016 and later: Unicode, Inc. and others. |
| 2 | // License & terms of use: http://www.unicode.org/copyright.html | |
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3 | /* |
| 4 | ********************************************************************** | |
| 4388f060 | 5 | * Copyright (c) 2001-2011, International Business Machines |
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6 | * Corporation and others. All Rights Reserved. |
| 7 | ********************************************************************** | |
| 8 | * Date Name Description | |
| 9 | * 04/02/2001 aliu Creation. | |
| 10 | ********************************************************************** | |
| 11 | */ | |
| 12 | ||
| 13 | #include "unicode/utypes.h" | |
| 14 | ||
| 15 | #if !UCONFIG_NO_TRANSLITERATION | |
| 16 | ||
| 17 | #include "remtrans.h" | |
| 73c04bcf | 18 | #include "unicode/unifilt.h" |
| b75a7d8f | 19 | |
| 73c04bcf | 20 | static const UChar CURR_ID[] = {65, 110, 121, 45, 0x52, 0x65, 0x6D, 0x6F, 0x76, 0x65, 0x00}; /* "Any-Remove" */ |
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21 | |
| 22 | U_NAMESPACE_BEGIN | |
| 23 | ||
| 374ca955 | 24 | UOBJECT_DEFINE_RTTI_IMPLEMENTATION(RemoveTransliterator) |
| b75a7d8f | 25 | |
| 73c04bcf A |
26 | /** |
| 27 | * Factory method | |
| 28 | */ | |
| 29 | static Transliterator* RemoveTransliterator_create(const UnicodeString& /*ID*/, | |
| 30 | Transliterator::Token /*context*/) { | |
| 31 | /* We don't need the ID or context. We just remove data */ | |
| 32 | return new RemoveTransliterator(); | |
| 33 | } | |
| 34 | ||
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35 | /** |
| 36 | * System registration hook. | |
| 37 | */ | |
| 38 | void RemoveTransliterator::registerIDs() { | |
| 39 | ||
| 4388f060 A |
40 | Transliterator::_registerFactory(UnicodeString(TRUE, ::CURR_ID, -1), |
| 41 | RemoveTransliterator_create, integerToken(0)); | |
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42 | |
| 43 | Transliterator::_registerSpecialInverse(UNICODE_STRING_SIMPLE("Remove"), | |
| 44 | UNICODE_STRING_SIMPLE("Null"), FALSE); | |
| 45 | } | |
| 46 | ||
| 4388f060 | 47 | RemoveTransliterator::RemoveTransliterator() : Transliterator(UnicodeString(TRUE, ::CURR_ID, -1), 0) {} |
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48 | |
| 49 | RemoveTransliterator::~RemoveTransliterator() {} | |
| 50 | ||
| 51 | Transliterator* RemoveTransliterator::clone(void) const { | |
| 73c04bcf | 52 | Transliterator* result = new RemoveTransliterator(); |
| 46f4442e | 53 | if (result != NULL && getFilter() != 0) { |
| 73c04bcf A |
54 | result->adoptFilter((UnicodeFilter*)(getFilter()->clone())); |
| 55 | } | |
| 56 | return result; | |
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57 | } |
| 58 | ||
| 59 | void RemoveTransliterator::handleTransliterate(Replaceable& text, UTransPosition& index, | |
| 60 | UBool /*isIncremental*/) const { | |
| 61 | // Our caller (filteredTransliterate) has already narrowed us | |
| 62 | // to an unfiltered run. Delete it. | |
| 63 | UnicodeString empty; | |
| 64 | text.handleReplaceBetween(index.start, index.limit, empty); | |
| 65 | int32_t len = index.limit - index.start; | |
| 66 | index.contextLimit -= len; | |
| 67 | index.limit -= len; | |
| 68 | } | |
| 69 | U_NAMESPACE_END | |
| 70 | ||
| 71 | #endif /* #if !UCONFIG_NO_TRANSLITERATION */ |