The Tor Browser / file comparison
comparison: intl/icu/source/i18n/uni2name.cpp
intl/icu/source/i18n/uni2name.cpp
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:f6e92ab24406 |
|---|---|
| 1 /* | |
| 2 ********************************************************************** | |
| 3 * Copyright (C) 2001-2011, International Business Machines | |
| 4 * Corporation and others. All Rights Reserved. | |
| 5 ********************************************************************** | |
| 6 * Date Name Description | |
| 7 * 06/06/01 aliu Creation. | |
| 8 ********************************************************************** | |
| 9 */ | |
| 10 | |
| 11 #include "unicode/utypes.h" | |
| 12 | |
| 13 #if !UCONFIG_NO_TRANSLITERATION | |
| 14 | |
| 15 #include "unicode/unifilt.h" | |
| 16 #include "unicode/uchar.h" | |
| 17 #include "unicode/utf16.h" | |
| 18 #include "uni2name.h" | |
| 19 #include "cstring.h" | |
| 20 #include "cmemory.h" | |
| 21 #include "uprops.h" | |
| 22 | |
| 23 U_NAMESPACE_BEGIN | |
| 24 | |
| 25 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(UnicodeNameTransliterator) | |
| 26 | |
| 27 static const UChar OPEN_DELIM[] = {92,78,123,0}; // "\N{" | |
| 28 static const UChar CLOSE_DELIM = 125; // "}" | |
| 29 #define OPEN_DELIM_LEN 3 | |
| 30 | |
| 31 /** | |
| 32 * Constructs a transliterator. | |
| 33 */ | |
| 34 UnicodeNameTransliterator::UnicodeNameTransliterator(UnicodeFilter* adoptedFilter) : | |
| 35 Transliterator(UNICODE_STRING("Any-Name", 8), adoptedFilter) { | |
| 36 } | |
| 37 | |
| 38 /** | |
| 39 * Destructor. | |
| 40 */ | |
| 41 UnicodeNameTransliterator::~UnicodeNameTransliterator() {} | |
| 42 | |
| 43 /** | |
| 44 * Copy constructor. | |
| 45 */ | |
| 46 UnicodeNameTransliterator::UnicodeNameTransliterator(const UnicodeNameTransliterator& o) : | |
| 47 Transliterator(o) {} | |
| 48 | |
| 49 /** | |
| 50 * Assignment operator. | |
| 51 */ | |
| 52 /*UnicodeNameTransliterator& UnicodeNameTransliterator::operator=( | |
| 53 const UnicodeNameTransliterator& o) { | |
| 54 Transliterator::operator=(o); | |
| 55 return *this; | |
| 56 }*/ | |
| 57 | |
| 58 /** | |
| 59 * Transliterator API. | |
| 60 */ | |
| 61 Transliterator* UnicodeNameTransliterator::clone(void) const { | |
| 62 return new UnicodeNameTransliterator(*this); | |
| 63 } | |
| 64 | |
| 65 /** | |
| 66 * Implements {@link Transliterator#handleTransliterate}. | |
| 67 * Ignore isIncremental since we don't need the context, and | |
| 68 * we work on codepoints. | |
| 69 */ | |
| 70 void UnicodeNameTransliterator::handleTransliterate(Replaceable& text, UTransPosition& offsets, | |
| 71 UBool /*isIncremental*/) const { | |
| 72 // The failure mode, here and below, is to behave like Any-Null, | |
| 73 // if either there is no name data (max len == 0) or there is no | |
| 74 // memory (malloc() => NULL). | |
| 75 | |
| 76 int32_t maxLen = uprv_getMaxCharNameLength(); | |
| 77 if (maxLen == 0) { | |
| 78 offsets.start = offsets.limit; | |
| 79 return; | |
| 80 } | |
| 81 | |
| 82 // Accomodate the longest possible name plus padding | |
| 83 char* buf = (char*) uprv_malloc(maxLen); | |
| 84 if (buf == NULL) { | |
| 85 offsets.start = offsets.limit; | |
| 86 return; | |
| 87 } | |
| 88 | |
| 89 int32_t cursor = offsets.start; | |
| 90 int32_t limit = offsets.limit; | |
| 91 | |
| 92 UnicodeString str(FALSE, OPEN_DELIM, OPEN_DELIM_LEN); | |
| 93 UErrorCode status; | |
| 94 int32_t len; | |
| 95 | |
| 96 while (cursor < limit) { | |
| 97 UChar32 c = text.char32At(cursor); | |
| 98 int32_t clen = U16_LENGTH(c); | |
| 99 status = U_ZERO_ERROR; | |
| 100 if ((len = u_charName(c, U_EXTENDED_CHAR_NAME, buf, maxLen, &status)) >0 && !U_FAILURE(status)) { | |
| 101 str.truncate(OPEN_DELIM_LEN); | |
| 102 str.append(UnicodeString(buf, len, US_INV)).append(CLOSE_DELIM); | |
| 103 text.handleReplaceBetween(cursor, cursor+clen, str); | |
| 104 len += OPEN_DELIM_LEN + 1; // adjust for delimiters | |
| 105 cursor += len; // advance cursor and adjust for new text | |
| 106 limit += len-clen; // change in length | |
| 107 } else { | |
| 108 cursor += clen; | |
| 109 } | |
| 110 } | |
| 111 | |
| 112 offsets.contextLimit += limit - offsets.limit; | |
| 113 offsets.limit = limit; | |
| 114 offsets.start = cursor; | |
| 115 | |
| 116 uprv_free(buf); | |
| 117 } | |
| 118 | |
| 119 U_NAMESPACE_END | |
| 120 | |
| 121 #endif /* #if !UCONFIG_NO_TRANSLITERATION */ |
